Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1 | /* vi: set sw=4 ts=4: */ |
| 2 | /* |
| 3 | * Licensed under GPLv2 or later, see file LICENSE in this source tree. |
| 4 | * Copyright (c) 2018 Gavin D. Howard and contributors. |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5 | */ |
| 6 | //config:config BC |
| 7 | //config: bool "bc (45 kb; 49 kb when combined with dc)" |
| 8 | //config: default y |
| 9 | //config: help |
| 10 | //config: bc is a command-line, arbitrary-precision calculator with a |
| 11 | //config: Turing-complete language. See the GNU bc manual |
| 12 | //config: (https://www.gnu.org/software/bc/manual/bc.html) and bc spec |
Denys Vlasenko | 89e785a | 2018-12-13 16:35:52 +0100 | [diff] [blame] | 13 | //config: (http://pubs.opengroup.org/onlinepubs/9699919799/utilities/bc.html). |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 14 | //config: |
Denys Vlasenko | 89e785a | 2018-12-13 16:35:52 +0100 | [diff] [blame] | 15 | //config: This bc has five differences to the GNU bc: |
| 16 | //config: 1) The period (.) is a shortcut for "last", as in the BSD bc. |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 17 | //config: 2) Arrays are copied before being passed as arguments to |
| 18 | //config: functions. This behavior is required by the bc spec. |
| 19 | //config: 3) Arrays can be passed to the builtin "length" function to get |
Denys Vlasenko | 89e785a | 2018-12-13 16:35:52 +0100 | [diff] [blame] | 20 | //config: the number of elements in the array. This prints "1": |
| 21 | //config: a[0] = 0; length(a[]) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 22 | //config: 4) The precedence of the boolean "not" operator (!) is equal to |
Denys Vlasenko | 89e785a | 2018-12-13 16:35:52 +0100 | [diff] [blame] | 23 | //config: that of the unary minus (-) negation operator. This still |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 24 | //config: allows POSIX-compliant scripts to work while somewhat |
| 25 | //config: preserving expected behavior (versus C) and making parsing |
| 26 | //config: easier. |
Denys Vlasenko | 89e785a | 2018-12-13 16:35:52 +0100 | [diff] [blame] | 27 | //config: 5) "read()" accepts expressions, not only numeric literals. |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 28 | //config: |
| 29 | //config: Options: |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 30 | //config: -i --interactive force interactive mode |
Denys Vlasenko | 89e785a | 2018-12-13 16:35:52 +0100 | [diff] [blame] | 31 | //config: -q --quiet don't print version and copyright |
| 32 | //config: -s --standard error if any non-POSIX extensions are used |
| 33 | //config: -w --warn warn if any non-POSIX extensions are used |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 34 | //config: -l --mathlib use predefined math routines: |
Denys Vlasenko | 89e785a | 2018-12-13 16:35:52 +0100 | [diff] [blame] | 35 | //config: s(expr) sine in radians |
| 36 | //config: c(expr) cosine in radians |
| 37 | //config: a(expr) arctangent, returning radians |
| 38 | //config: l(expr) natural log |
| 39 | //config: e(expr) raises e to the power of expr |
| 40 | //config: j(n, x) Bessel function of integer order n of x |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 41 | //config: |
| 42 | //config:config DC |
| 43 | //config: bool "dc (38 kb; 49 kb when combined with bc)" |
| 44 | //config: default y |
| 45 | //config: help |
| 46 | //config: dc is a reverse-polish notation command-line calculator which |
| 47 | //config: supports unlimited precision arithmetic. See the FreeBSD man page |
| 48 | //config: (https://www.unix.com/man-page/FreeBSD/1/dc/) and GNU dc manual |
Denys Vlasenko | 89e785a | 2018-12-13 16:35:52 +0100 | [diff] [blame] | 49 | //config: (https://www.gnu.org/software/bc/manual/dc-1.05/html_mono/dc.html). |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 50 | //config: |
| 51 | //config: This dc has a few differences from the two above: |
Denys Vlasenko | 89e785a | 2018-12-13 16:35:52 +0100 | [diff] [blame] | 52 | //config: 1) When printing a byte stream (command "P"), this dc follows what |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 53 | //config: the FreeBSD dc does. |
Denys Vlasenko | 89e785a | 2018-12-13 16:35:52 +0100 | [diff] [blame] | 54 | //config: 2) Implements the GNU extensions for divmod ("~") and |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 55 | //config: modular exponentiation ("|"). |
Denys Vlasenko | 89e785a | 2018-12-13 16:35:52 +0100 | [diff] [blame] | 56 | //config: 3) Implements all FreeBSD extensions, except for "J" and "M". |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 57 | //config: 4) Like the FreeBSD dc, this dc supports extended registers. |
| 58 | //config: However, they are implemented differently. When it encounters |
| 59 | //config: whitespace where a register should be, it skips the whitespace. |
| 60 | //config: If the character following is not a lowercase letter, an error |
| 61 | //config: is issued. Otherwise, the register name is parsed by the |
| 62 | //config: following regex: |
Denys Vlasenko | 89e785a | 2018-12-13 16:35:52 +0100 | [diff] [blame] | 63 | //config: [a-z][a-z0-9_]* |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 64 | //config: This generally means that register names will be surrounded by |
Denys Vlasenko | 89e785a | 2018-12-13 16:35:52 +0100 | [diff] [blame] | 65 | //config: whitespace. Examples: |
| 66 | //config: l idx s temp L index S temp2 < do_thing |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 67 | //config: Also note that, like the FreeBSD dc, extended registers are not |
| 68 | //config: allowed unless the "-x" option is given. |
| 69 | //config: |
Denys Vlasenko | 9ca9ef2 | 2018-12-06 11:31:14 +0100 | [diff] [blame] | 70 | //config:config FEATURE_DC_SMALL |
| 71 | //config: bool "Minimal dc implementation (4.2 kb), not using bc code base" |
| 72 | //config: depends on DC && !BC |
Denys Vlasenko | 6e7c65f | 2018-12-08 19:34:35 +0100 | [diff] [blame] | 73 | //config: default n |
Denys Vlasenko | 9ca9ef2 | 2018-12-06 11:31:14 +0100 | [diff] [blame] | 74 | //config: |
| 75 | //config:config FEATURE_DC_LIBM |
| 76 | //config: bool "Enable power and exp functions (requires libm)" |
| 77 | //config: default y |
| 78 | //config: depends on FEATURE_DC_SMALL |
| 79 | //config: help |
| 80 | //config: Enable power and exp functions. |
| 81 | //config: NOTE: This will require libm to be present for linking. |
| 82 | //config: |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 83 | //config:config FEATURE_BC_SIGNALS |
Denys Vlasenko | 89e785a | 2018-12-13 16:35:52 +0100 | [diff] [blame] | 84 | //config: bool "Interactive mode (+4kb)" |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 85 | //config: default y |
Denys Vlasenko | 9ca9ef2 | 2018-12-06 11:31:14 +0100 | [diff] [blame] | 86 | //config: depends on (BC || DC) && !FEATURE_DC_SMALL |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 87 | //config: help |
Denys Vlasenko | 89e785a | 2018-12-13 16:35:52 +0100 | [diff] [blame] | 88 | //config: Enable interactive mode: when started on a tty, |
| 89 | //config: ^C interrupts execution and returns to command line, |
| 90 | //config: errors also return to command line instead of exiting, |
| 91 | //config: line editing with history is available. |
| 92 | //config: |
| 93 | //config: With this option off, input can still be taken from tty, |
| 94 | //config: but all errors are fatal, ^C is fatal, |
| 95 | //config: tty is treated exactly the same as any other |
| 96 | //config: standard input (IOW: no line editing). |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 97 | //config: |
| 98 | //config:config FEATURE_BC_LONG_OPTIONS |
| 99 | //config: bool "Enable bc/dc long options" |
| 100 | //config: default y |
Denys Vlasenko | 9ca9ef2 | 2018-12-06 11:31:14 +0100 | [diff] [blame] | 101 | //config: depends on (BC || DC) && !FEATURE_DC_SMALL |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 102 | //config: help |
| 103 | //config: Enable long options for bc and dc. |
| 104 | |
| 105 | //applet:IF_BC(APPLET(bc, BB_DIR_USR_BIN, BB_SUID_DROP)) |
| 106 | //applet:IF_DC(APPLET(dc, BB_DIR_USR_BIN, BB_SUID_DROP)) |
| 107 | |
| 108 | //kbuild:lib-$(CONFIG_BC) += bc.o |
| 109 | //kbuild:lib-$(CONFIG_DC) += bc.o |
| 110 | |
Denys Vlasenko | 9721f6c | 2018-12-02 20:34:03 +0100 | [diff] [blame] | 111 | //See www.gnu.org/software/bc/manual/bc.html |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 112 | //usage:#define bc_trivial_usage |
Denys Vlasenko | 1a6a482 | 2018-12-06 09:20:32 +0100 | [diff] [blame] | 113 | //usage: "[-sqliw] FILE..." |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 114 | //usage: |
Denys Vlasenko | 9721f6c | 2018-12-02 20:34:03 +0100 | [diff] [blame] | 115 | //usage:#define bc_full_usage "\n" |
| 116 | //usage: "\nArbitrary precision calculator" |
| 117 | //usage: "\n" |
Denys Vlasenko | 6d0be10 | 2018-12-06 18:41:59 +0100 | [diff] [blame] | 118 | ///////: "\n -i Interactive" - has no effect for now |
| 119 | //usage: "\n -q Quiet" |
Denys Vlasenko | 9721f6c | 2018-12-02 20:34:03 +0100 | [diff] [blame] | 120 | //usage: "\n -l Load standard math library" |
| 121 | //usage: "\n -s Be POSIX compatible" |
Denys Vlasenko | 9721f6c | 2018-12-02 20:34:03 +0100 | [diff] [blame] | 122 | //usage: "\n -w Warn if extensions are used" |
| 123 | ///////: "\n -v Version" |
Denys Vlasenko | 6d0be10 | 2018-12-06 18:41:59 +0100 | [diff] [blame] | 124 | //usage: "\n" |
Denys Vlasenko | 1a6a482 | 2018-12-06 09:20:32 +0100 | [diff] [blame] | 125 | //usage: "\n$BC_LINE_LENGTH changes output width" |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 126 | //usage: |
| 127 | //usage:#define bc_example_usage |
| 128 | //usage: "3 + 4.129\n" |
| 129 | //usage: "1903 - 2893\n" |
| 130 | //usage: "-129 * 213.28935\n" |
| 131 | //usage: "12 / -1932\n" |
| 132 | //usage: "12 % 12\n" |
| 133 | //usage: "34 ^ 189\n" |
| 134 | //usage: "scale = 13\n" |
| 135 | //usage: "ibase = 2\n" |
| 136 | //usage: "obase = A\n" |
| 137 | //usage: |
| 138 | //usage:#define dc_trivial_usage |
Denys Vlasenko | 6e7c65f | 2018-12-08 19:34:35 +0100 | [diff] [blame] | 139 | //usage: IF_NOT_FEATURE_DC_SMALL("[-x] ")"[-eSCRIPT]... [-fFILE]... [FILE]..." |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 140 | //usage: |
Denys Vlasenko | 9ca9ef2 | 2018-12-06 11:31:14 +0100 | [diff] [blame] | 141 | //usage:#define dc_full_usage "\n" |
| 142 | //usage: "\nTiny RPN calculator. Operations:" |
Denys Vlasenko | 6e7c65f | 2018-12-08 19:34:35 +0100 | [diff] [blame] | 143 | //usage: "\n+, -, *, /, %, ~, ^," IF_NOT_FEATURE_DC_SMALL(" |,") |
Denys Vlasenko | 6d0be10 | 2018-12-06 18:41:59 +0100 | [diff] [blame] | 144 | //usage: "\np - print top of the stack (without popping)" |
| 145 | //usage: "\nf - print entire stack" |
| 146 | //usage: "\nk - pop the value and set the precision" |
| 147 | //usage: "\ni - pop the value and set input radix" |
| 148 | //usage: "\no - pop the value and set output radix" |
| 149 | //usage: "\nExamples: dc -e'2 2 + p' -> 4, dc -e'8 8 * 2 2 + / p' -> 16" |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 150 | //usage: |
| 151 | //usage:#define dc_example_usage |
Denys Vlasenko | 6d0be10 | 2018-12-06 18:41:59 +0100 | [diff] [blame] | 152 | //usage: "$ dc -e'2 2 + p'\n" |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 153 | //usage: "4\n" |
Denys Vlasenko | 6d0be10 | 2018-12-06 18:41:59 +0100 | [diff] [blame] | 154 | //usage: "$ dc -e'8 8 \\* 2 2 + / p'\n" |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 155 | //usage: "16\n" |
Denys Vlasenko | 6d0be10 | 2018-12-06 18:41:59 +0100 | [diff] [blame] | 156 | //usage: "$ dc -e'0 1 & p'\n" |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 157 | //usage: "0\n" |
Denys Vlasenko | 6d0be10 | 2018-12-06 18:41:59 +0100 | [diff] [blame] | 158 | //usage: "$ dc -e'0 1 | p'\n" |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 159 | //usage: "1\n" |
Denys Vlasenko | 6d0be10 | 2018-12-06 18:41:59 +0100 | [diff] [blame] | 160 | //usage: "$ echo '72 9 / 8 * p' | dc\n" |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 161 | //usage: "64\n" |
| 162 | |
| 163 | #include "libbb.h" |
Denys Vlasenko | 95f93bd | 2018-12-06 10:29:12 +0100 | [diff] [blame] | 164 | #include "common_bufsiz.h" |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 165 | |
Denys Vlasenko | 9ca9ef2 | 2018-12-06 11:31:14 +0100 | [diff] [blame] | 166 | #if ENABLE_FEATURE_DC_SMALL |
| 167 | # include "dc.c" |
| 168 | #else |
| 169 | |
Denys Vlasenko | 2ea53a4 | 2018-12-14 17:51:17 +0100 | [diff] [blame] | 170 | #define DEBUG_LEXER 0 |
Denys Vlasenko | 99b3762 | 2018-12-15 20:06:59 +0100 | [diff] [blame] | 171 | #define DEBUG_EXEC 0 |
Denys Vlasenko | 2ea53a4 | 2018-12-14 17:51:17 +0100 | [diff] [blame] | 172 | |
| 173 | #if DEBUG_LEXER |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 174 | static uint8_t lex_indent; |
Denys Vlasenko | 2ea53a4 | 2018-12-14 17:51:17 +0100 | [diff] [blame] | 175 | #define dbg_lex(...) \ |
| 176 | do { \ |
| 177 | fprintf(stderr, "%*s", lex_indent, ""); \ |
| 178 | bb_error_msg(__VA_ARGS__); \ |
| 179 | } while (0) |
| 180 | #define dbg_lex_enter(...) \ |
| 181 | do { \ |
| 182 | dbg_lex(__VA_ARGS__); \ |
| 183 | lex_indent++; \ |
| 184 | } while (0) |
| 185 | #define dbg_lex_done(...) \ |
| 186 | do { \ |
| 187 | lex_indent--; \ |
| 188 | dbg_lex(__VA_ARGS__); \ |
| 189 | } while (0) |
Denys Vlasenko | 0a23814 | 2018-12-14 16:48:34 +0100 | [diff] [blame] | 190 | #else |
Denys Vlasenko | 2ea53a4 | 2018-12-14 17:51:17 +0100 | [diff] [blame] | 191 | # define dbg_lex(...) ((void)0) |
| 192 | # define dbg_lex_enter(...) ((void)0) |
| 193 | # define dbg_lex_done(...) ((void)0) |
Denys Vlasenko | 0a23814 | 2018-12-14 16:48:34 +0100 | [diff] [blame] | 194 | #endif |
| 195 | |
Denys Vlasenko | 99b3762 | 2018-12-15 20:06:59 +0100 | [diff] [blame] | 196 | #if DEBUG_EXEC |
| 197 | # define dbg_exec(...) bb_error_msg(__VA_ARGS__) |
| 198 | #else |
| 199 | # define dbg_exec(...) ((void)0) |
| 200 | #endif |
| 201 | |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 202 | typedef enum BcStatus { |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 203 | BC_STATUS_SUCCESS = 0, |
| 204 | BC_STATUS_FAILURE = 1, |
Denys Vlasenko | b402ff8 | 2018-12-11 15:45:15 +0100 | [diff] [blame] | 205 | BC_STATUS_PARSE_EMPTY_EXP = 2, // bc_parse_expr_empty_ok() uses this |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 206 | } BcStatus; |
| 207 | |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 208 | #define BC_VEC_INVALID_IDX ((size_t) -1) |
| 209 | #define BC_VEC_START_CAP (1 << 5) |
| 210 | |
Denys Vlasenko | 5ba55f1 | 2018-12-10 15:37:14 +0100 | [diff] [blame] | 211 | typedef void (*BcVecFree)(void *) FAST_FUNC; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 212 | |
| 213 | typedef struct BcVec { |
| 214 | char *v; |
| 215 | size_t len; |
| 216 | size_t cap; |
| 217 | size_t size; |
| 218 | BcVecFree dtor; |
| 219 | } BcVec; |
| 220 | |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 221 | typedef signed char BcDig; |
| 222 | |
| 223 | typedef struct BcNum { |
| 224 | BcDig *restrict num; |
| 225 | size_t rdx; |
| 226 | size_t len; |
| 227 | size_t cap; |
| 228 | bool neg; |
| 229 | } BcNum; |
| 230 | |
Denys Vlasenko | 2fa11b6 | 2018-12-06 12:34:39 +0100 | [diff] [blame] | 231 | #define BC_NUM_MIN_BASE ((unsigned long) 2) |
| 232 | #define BC_NUM_MAX_IBASE ((unsigned long) 16) |
| 233 | // larger value might speed up BIGNUM calculations a bit: |
| 234 | #define BC_NUM_DEF_SIZE (16) |
| 235 | #define BC_NUM_PRINT_WIDTH (69) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 236 | |
Denys Vlasenko | 2fa11b6 | 2018-12-06 12:34:39 +0100 | [diff] [blame] | 237 | #define BC_NUM_KARATSUBA_LEN (32) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 238 | |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 239 | typedef enum BcInst { |
| 240 | |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 241 | #if ENABLE_BC |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 242 | BC_INST_INC_PRE, |
| 243 | BC_INST_DEC_PRE, |
| 244 | BC_INST_INC_POST, |
| 245 | BC_INST_DEC_POST, |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 246 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 247 | |
| 248 | BC_INST_NEG, |
| 249 | |
| 250 | BC_INST_POWER, |
| 251 | BC_INST_MULTIPLY, |
| 252 | BC_INST_DIVIDE, |
| 253 | BC_INST_MODULUS, |
| 254 | BC_INST_PLUS, |
| 255 | BC_INST_MINUS, |
| 256 | |
| 257 | BC_INST_REL_EQ, |
| 258 | BC_INST_REL_LE, |
| 259 | BC_INST_REL_GE, |
| 260 | BC_INST_REL_NE, |
| 261 | BC_INST_REL_LT, |
| 262 | BC_INST_REL_GT, |
| 263 | |
| 264 | BC_INST_BOOL_NOT, |
| 265 | BC_INST_BOOL_OR, |
| 266 | BC_INST_BOOL_AND, |
| 267 | |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 268 | #if ENABLE_BC |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 269 | BC_INST_ASSIGN_POWER, |
| 270 | BC_INST_ASSIGN_MULTIPLY, |
| 271 | BC_INST_ASSIGN_DIVIDE, |
| 272 | BC_INST_ASSIGN_MODULUS, |
| 273 | BC_INST_ASSIGN_PLUS, |
| 274 | BC_INST_ASSIGN_MINUS, |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 275 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 276 | BC_INST_ASSIGN, |
| 277 | |
| 278 | BC_INST_NUM, |
| 279 | BC_INST_VAR, |
| 280 | BC_INST_ARRAY_ELEM, |
| 281 | BC_INST_ARRAY, |
| 282 | |
| 283 | BC_INST_SCALE_FUNC, |
| 284 | BC_INST_IBASE, |
| 285 | BC_INST_SCALE, |
| 286 | BC_INST_LAST, |
| 287 | BC_INST_LENGTH, |
| 288 | BC_INST_READ, |
| 289 | BC_INST_OBASE, |
| 290 | BC_INST_SQRT, |
| 291 | |
| 292 | BC_INST_PRINT, |
| 293 | BC_INST_PRINT_POP, |
| 294 | BC_INST_STR, |
| 295 | BC_INST_PRINT_STR, |
| 296 | |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 297 | #if ENABLE_BC |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 298 | BC_INST_JUMP, |
| 299 | BC_INST_JUMP_ZERO, |
| 300 | |
| 301 | BC_INST_CALL, |
| 302 | |
| 303 | BC_INST_RET, |
| 304 | BC_INST_RET0, |
| 305 | |
| 306 | BC_INST_HALT, |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 307 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 308 | |
| 309 | BC_INST_POP, |
| 310 | BC_INST_POP_EXEC, |
| 311 | |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 312 | #if ENABLE_DC |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 313 | BC_INST_MODEXP, |
| 314 | BC_INST_DIVMOD, |
| 315 | |
| 316 | BC_INST_EXECUTE, |
| 317 | BC_INST_EXEC_COND, |
| 318 | |
| 319 | BC_INST_ASCIIFY, |
| 320 | BC_INST_PRINT_STREAM, |
| 321 | |
| 322 | BC_INST_PRINT_STACK, |
| 323 | BC_INST_CLEAR_STACK, |
| 324 | BC_INST_STACK_LEN, |
| 325 | BC_INST_DUPLICATE, |
| 326 | BC_INST_SWAP, |
| 327 | |
| 328 | BC_INST_LOAD, |
| 329 | BC_INST_PUSH_VAR, |
| 330 | BC_INST_PUSH_TO_VAR, |
| 331 | |
| 332 | BC_INST_QUIT, |
| 333 | BC_INST_NQUIT, |
| 334 | |
| 335 | BC_INST_INVALID = -1, |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 336 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 337 | |
| 338 | } BcInst; |
| 339 | |
| 340 | typedef struct BcId { |
| 341 | char *name; |
| 342 | size_t idx; |
| 343 | } BcId; |
| 344 | |
| 345 | typedef struct BcFunc { |
| 346 | BcVec code; |
| 347 | BcVec labels; |
| 348 | size_t nparams; |
| 349 | BcVec autos; |
| 350 | } BcFunc; |
| 351 | |
| 352 | typedef enum BcResultType { |
| 353 | |
| 354 | BC_RESULT_TEMP, |
| 355 | |
| 356 | BC_RESULT_VAR, |
| 357 | BC_RESULT_ARRAY_ELEM, |
| 358 | BC_RESULT_ARRAY, |
| 359 | |
| 360 | BC_RESULT_STR, |
| 361 | |
| 362 | BC_RESULT_IBASE, |
| 363 | BC_RESULT_SCALE, |
| 364 | BC_RESULT_LAST, |
| 365 | |
| 366 | // These are between to calculate ibase, obase, and last from instructions. |
| 367 | BC_RESULT_CONSTANT, |
| 368 | BC_RESULT_ONE, |
| 369 | |
| 370 | BC_RESULT_OBASE, |
| 371 | |
| 372 | } BcResultType; |
| 373 | |
| 374 | typedef union BcResultData { |
| 375 | BcNum n; |
| 376 | BcVec v; |
| 377 | BcId id; |
| 378 | } BcResultData; |
| 379 | |
| 380 | typedef struct BcResult { |
| 381 | BcResultType t; |
| 382 | BcResultData d; |
| 383 | } BcResult; |
| 384 | |
| 385 | typedef struct BcInstPtr { |
| 386 | size_t func; |
| 387 | size_t idx; |
| 388 | size_t len; |
| 389 | } BcInstPtr; |
| 390 | |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 391 | // BC_LEX_NEG is not used in lexing; it is only for parsing. |
| 392 | typedef enum BcLexType { |
| 393 | |
| 394 | BC_LEX_EOF, |
| 395 | BC_LEX_INVALID, |
| 396 | |
| 397 | BC_LEX_OP_INC, |
| 398 | BC_LEX_OP_DEC, |
| 399 | |
| 400 | BC_LEX_NEG, |
| 401 | |
| 402 | BC_LEX_OP_POWER, |
| 403 | BC_LEX_OP_MULTIPLY, |
| 404 | BC_LEX_OP_DIVIDE, |
| 405 | BC_LEX_OP_MODULUS, |
| 406 | BC_LEX_OP_PLUS, |
| 407 | BC_LEX_OP_MINUS, |
| 408 | |
| 409 | BC_LEX_OP_REL_EQ, |
| 410 | BC_LEX_OP_REL_LE, |
| 411 | BC_LEX_OP_REL_GE, |
| 412 | BC_LEX_OP_REL_NE, |
| 413 | BC_LEX_OP_REL_LT, |
| 414 | BC_LEX_OP_REL_GT, |
| 415 | |
| 416 | BC_LEX_OP_BOOL_NOT, |
| 417 | BC_LEX_OP_BOOL_OR, |
| 418 | BC_LEX_OP_BOOL_AND, |
| 419 | |
| 420 | BC_LEX_OP_ASSIGN_POWER, |
| 421 | BC_LEX_OP_ASSIGN_MULTIPLY, |
| 422 | BC_LEX_OP_ASSIGN_DIVIDE, |
| 423 | BC_LEX_OP_ASSIGN_MODULUS, |
| 424 | BC_LEX_OP_ASSIGN_PLUS, |
| 425 | BC_LEX_OP_ASSIGN_MINUS, |
| 426 | BC_LEX_OP_ASSIGN, |
| 427 | |
| 428 | BC_LEX_NLINE, |
| 429 | BC_LEX_WHITESPACE, |
| 430 | |
| 431 | BC_LEX_LPAREN, |
| 432 | BC_LEX_RPAREN, |
| 433 | |
| 434 | BC_LEX_LBRACKET, |
| 435 | BC_LEX_COMMA, |
| 436 | BC_LEX_RBRACKET, |
| 437 | |
Denys Vlasenko | 9dc5d08 | 2018-12-16 18:43:51 +0100 | [diff] [blame] | 438 | BC_LEX_LBRACE, // '{' is 0x7B, '}' is 0x7D, |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 439 | BC_LEX_SCOLON, |
Denys Vlasenko | 9dc5d08 | 2018-12-16 18:43:51 +0100 | [diff] [blame] | 440 | BC_LEX_RBRACE, // should be LBRACE+2: code uses (c - '{' + BC_LEX_LBRACE) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 441 | |
| 442 | BC_LEX_STR, |
| 443 | BC_LEX_NAME, |
| 444 | BC_LEX_NUMBER, |
| 445 | |
Denys Vlasenko | 51fb8aa | 2018-12-05 00:22:34 +0100 | [diff] [blame] | 446 | BC_LEX_KEY_1st_keyword, |
| 447 | BC_LEX_KEY_AUTO = BC_LEX_KEY_1st_keyword, |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 448 | BC_LEX_KEY_BREAK, |
| 449 | BC_LEX_KEY_CONTINUE, |
| 450 | BC_LEX_KEY_DEFINE, |
| 451 | BC_LEX_KEY_ELSE, |
| 452 | BC_LEX_KEY_FOR, |
| 453 | BC_LEX_KEY_HALT, |
Denys Vlasenko | 51fb8aa | 2018-12-05 00:22:34 +0100 | [diff] [blame] | 454 | // code uses "type - BC_LEX_KEY_IBASE + BC_INST_IBASE" construct, |
| 455 | BC_LEX_KEY_IBASE, // relative order should match for: BC_INST_IBASE |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 456 | BC_LEX_KEY_IF, |
Denys Vlasenko | 51fb8aa | 2018-12-05 00:22:34 +0100 | [diff] [blame] | 457 | BC_LEX_KEY_LAST, // relative order should match for: BC_INST_LAST |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 458 | BC_LEX_KEY_LENGTH, |
| 459 | BC_LEX_KEY_LIMITS, |
Denys Vlasenko | 51fb8aa | 2018-12-05 00:22:34 +0100 | [diff] [blame] | 460 | BC_LEX_KEY_OBASE, // relative order should match for: BC_INST_OBASE |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 461 | BC_LEX_KEY_PRINT, |
| 462 | BC_LEX_KEY_QUIT, |
| 463 | BC_LEX_KEY_READ, |
| 464 | BC_LEX_KEY_RETURN, |
| 465 | BC_LEX_KEY_SCALE, |
| 466 | BC_LEX_KEY_SQRT, |
| 467 | BC_LEX_KEY_WHILE, |
| 468 | |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 469 | #if ENABLE_DC |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 470 | BC_LEX_EQ_NO_REG, |
| 471 | BC_LEX_OP_MODEXP, |
| 472 | BC_LEX_OP_DIVMOD, |
| 473 | |
| 474 | BC_LEX_COLON, |
| 475 | BC_LEX_ELSE, |
| 476 | BC_LEX_EXECUTE, |
| 477 | BC_LEX_PRINT_STACK, |
| 478 | BC_LEX_CLEAR_STACK, |
| 479 | BC_LEX_STACK_LEVEL, |
| 480 | BC_LEX_DUPLICATE, |
| 481 | BC_LEX_SWAP, |
| 482 | BC_LEX_POP, |
| 483 | |
| 484 | BC_LEX_ASCIIFY, |
| 485 | BC_LEX_PRINT_STREAM, |
| 486 | |
| 487 | BC_LEX_STORE_IBASE, |
| 488 | BC_LEX_STORE_SCALE, |
| 489 | BC_LEX_LOAD, |
| 490 | BC_LEX_LOAD_POP, |
| 491 | BC_LEX_STORE_PUSH, |
| 492 | BC_LEX_STORE_OBASE, |
| 493 | BC_LEX_PRINT_POP, |
| 494 | BC_LEX_NQUIT, |
| 495 | BC_LEX_SCALE_FACTOR, |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 496 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 497 | } BcLexType; |
Denys Vlasenko | 51fb8aa | 2018-12-05 00:22:34 +0100 | [diff] [blame] | 498 | // must match order of BC_LEX_KEY_foo etc above |
| 499 | #if ENABLE_BC |
| 500 | struct BcLexKeyword { |
| 501 | char name8[8]; |
| 502 | }; |
Denys Vlasenko | d00d2f9 | 2018-12-06 12:59:40 +0100 | [diff] [blame] | 503 | #define BC_LEX_KW_ENTRY(a, b) \ |
| 504 | { .name8 = a /*, .posix = b */ } |
Denys Vlasenko | 51fb8aa | 2018-12-05 00:22:34 +0100 | [diff] [blame] | 505 | static const struct BcLexKeyword bc_lex_kws[20] = { |
Denys Vlasenko | d00d2f9 | 2018-12-06 12:59:40 +0100 | [diff] [blame] | 506 | BC_LEX_KW_ENTRY("auto" , 1), // 0 |
| 507 | BC_LEX_KW_ENTRY("break" , 1), // 1 |
| 508 | BC_LEX_KW_ENTRY("continue", 0), // 2 note: this one has no terminating NUL |
| 509 | BC_LEX_KW_ENTRY("define" , 1), // 3 |
Denys Vlasenko | d00d2f9 | 2018-12-06 12:59:40 +0100 | [diff] [blame] | 510 | BC_LEX_KW_ENTRY("else" , 0), // 4 |
| 511 | BC_LEX_KW_ENTRY("for" , 1), // 5 |
| 512 | BC_LEX_KW_ENTRY("halt" , 0), // 6 |
| 513 | BC_LEX_KW_ENTRY("ibase" , 1), // 7 |
Denys Vlasenko | d00d2f9 | 2018-12-06 12:59:40 +0100 | [diff] [blame] | 514 | BC_LEX_KW_ENTRY("if" , 1), // 8 |
| 515 | BC_LEX_KW_ENTRY("last" , 0), // 9 |
| 516 | BC_LEX_KW_ENTRY("length" , 1), // 10 |
| 517 | BC_LEX_KW_ENTRY("limits" , 0), // 11 |
Denys Vlasenko | d00d2f9 | 2018-12-06 12:59:40 +0100 | [diff] [blame] | 518 | BC_LEX_KW_ENTRY("obase" , 1), // 12 |
| 519 | BC_LEX_KW_ENTRY("print" , 0), // 13 |
| 520 | BC_LEX_KW_ENTRY("quit" , 1), // 14 |
| 521 | BC_LEX_KW_ENTRY("read" , 0), // 15 |
Denys Vlasenko | d00d2f9 | 2018-12-06 12:59:40 +0100 | [diff] [blame] | 522 | BC_LEX_KW_ENTRY("return" , 1), // 16 |
| 523 | BC_LEX_KW_ENTRY("scale" , 1), // 17 |
| 524 | BC_LEX_KW_ENTRY("sqrt" , 1), // 18 |
| 525 | BC_LEX_KW_ENTRY("while" , 1), // 19 |
Denys Vlasenko | 51fb8aa | 2018-12-05 00:22:34 +0100 | [diff] [blame] | 526 | }; |
Denys Vlasenko | d00d2f9 | 2018-12-06 12:59:40 +0100 | [diff] [blame] | 527 | #undef BC_LEX_KW_ENTRY |
Denys Vlasenko | 51fb8aa | 2018-12-05 00:22:34 +0100 | [diff] [blame] | 528 | enum { |
| 529 | POSIX_KWORD_MASK = 0 |
Denys Vlasenko | 8226912 | 2018-12-14 16:30:56 +0100 | [diff] [blame] | 530 | | (1 << 0) // 0 |
| 531 | | (1 << 1) // 1 |
| 532 | | (0 << 2) // 2 |
| 533 | | (1 << 3) // 3 |
| 534 | | (0 << 4) // 4 |
| 535 | | (1 << 5) // 5 |
| 536 | | (0 << 6) // 6 |
| 537 | | (1 << 7) // 7 |
| 538 | | (1 << 8) // 8 |
| 539 | | (0 << 9) // 9 |
| 540 | | (1 << 10) // 10 |
| 541 | | (0 << 11) // 11 |
| 542 | | (1 << 12) // 12 |
| 543 | | (0 << 13) // 13 |
| 544 | | (1 << 14) // 14 |
| 545 | | (0 << 15) // 15 |
| 546 | | (1 << 16) // 16 |
| 547 | | (1 << 17) // 17 |
| 548 | | (1 << 18) // 18 |
| 549 | | (1 << 19) // 19 |
Denys Vlasenko | 51fb8aa | 2018-12-05 00:22:34 +0100 | [diff] [blame] | 550 | }; |
Denys Vlasenko | d00d2f9 | 2018-12-06 12:59:40 +0100 | [diff] [blame] | 551 | #define bc_lex_kws_POSIX(i) ((1 << (i)) & POSIX_KWORD_MASK) |
Denys Vlasenko | 51fb8aa | 2018-12-05 00:22:34 +0100 | [diff] [blame] | 552 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 553 | |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 554 | #if ENABLE_FEATURE_BC_SIGNALS || ENABLE_FEATURE_CLEAN_UP |
| 555 | # define BC_STATUS BcStatus |
| 556 | #else |
| 557 | # define BC_STATUS void |
| 558 | #endif |
| 559 | |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 560 | typedef struct BcLex { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 561 | const char *buf; |
| 562 | size_t i; |
| 563 | size_t line; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 564 | size_t len; |
| 565 | bool newline; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 566 | struct { |
| 567 | BcLexType t; |
| 568 | BcLexType last; |
| 569 | BcVec v; |
| 570 | } t; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 571 | } BcLex; |
| 572 | |
Denys Vlasenko | 0154d78 | 2018-12-14 23:32:51 +0100 | [diff] [blame] | 573 | #define BC_PARSE_STREND ((char) UCHAR_MAX) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 574 | |
Denys Vlasenko | 0154d78 | 2018-12-14 23:32:51 +0100 | [diff] [blame] | 575 | #define BC_PARSE_REL (1 << 0) |
| 576 | #define BC_PARSE_PRINT (1 << 1) |
| 577 | #define BC_PARSE_NOCALL (1 << 2) |
| 578 | #define BC_PARSE_NOREAD (1 << 3) |
| 579 | #define BC_PARSE_ARRAY (1 << 4) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 580 | |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 581 | typedef struct BcParse { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 582 | BcLex l; |
| 583 | |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 584 | BcVec exits; |
| 585 | BcVec conds; |
| 586 | |
| 587 | BcVec ops; |
| 588 | |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 589 | BcFunc *func; |
| 590 | size_t fidx; |
| 591 | |
Denys Vlasenko | e9519e4 | 2018-12-16 17:06:07 +0100 | [diff] [blame] | 592 | size_t in_funcdef; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 593 | } BcParse; |
| 594 | |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 595 | typedef struct BcProgram { |
| 596 | |
| 597 | size_t len; |
| 598 | size_t scale; |
| 599 | |
| 600 | BcNum ib; |
| 601 | size_t ib_t; |
| 602 | BcNum ob; |
| 603 | size_t ob_t; |
| 604 | |
| 605 | BcNum hexb; |
| 606 | |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 607 | #if ENABLE_DC |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 608 | BcNum strmb; |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 609 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 610 | |
| 611 | BcVec results; |
| 612 | BcVec stack; |
| 613 | |
| 614 | BcVec fns; |
| 615 | BcVec fn_map; |
| 616 | |
| 617 | BcVec vars; |
| 618 | BcVec var_map; |
| 619 | |
| 620 | BcVec arrs; |
| 621 | BcVec arr_map; |
| 622 | |
| 623 | BcVec strs; |
| 624 | BcVec consts; |
| 625 | |
| 626 | const char *file; |
| 627 | |
| 628 | BcNum last; |
| 629 | BcNum zero; |
| 630 | BcNum one; |
| 631 | |
| 632 | size_t nchars; |
| 633 | |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 634 | } BcProgram; |
| 635 | |
| 636 | #define BC_PROG_STACK(s, n) ((s)->len >= ((size_t) n)) |
| 637 | |
| 638 | #define BC_PROG_MAIN (0) |
| 639 | #define BC_PROG_READ (1) |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 640 | #if ENABLE_DC |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 641 | #define BC_PROG_REQ_FUNCS (2) |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 642 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 643 | |
| 644 | #define BC_PROG_STR(n) (!(n)->num && !(n)->cap) |
| 645 | #define BC_PROG_NUM(r, n) \ |
| 646 | ((r)->t != BC_RESULT_ARRAY && (r)->t != BC_RESULT_STR && !BC_PROG_STR(n)) |
| 647 | |
Denys Vlasenko | 6d0be10 | 2018-12-06 18:41:59 +0100 | [diff] [blame] | 648 | #define BC_FLAG_W (1 << 0) |
| 649 | #define BC_FLAG_V (1 << 1) |
| 650 | #define BC_FLAG_S (1 << 2) |
| 651 | #define BC_FLAG_Q (1 << 3) |
| 652 | #define BC_FLAG_L (1 << 4) |
| 653 | #define BC_FLAG_I (1 << 5) |
| 654 | #define DC_FLAG_X (1 << 6) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 655 | |
| 656 | #define BC_MAX(a, b) ((a) > (b) ? (a) : (b)) |
| 657 | #define BC_MIN(a, b) ((a) < (b) ? (a) : (b)) |
| 658 | |
Denys Vlasenko | 64074a1 | 2018-12-07 15:50:14 +0100 | [diff] [blame] | 659 | #define BC_MAX_OBASE ((unsigned) 999) |
| 660 | #define BC_MAX_DIM ((unsigned) INT_MAX) |
| 661 | #define BC_MAX_SCALE ((unsigned) UINT_MAX) |
| 662 | #define BC_MAX_STRING ((unsigned) UINT_MAX - 1) |
| 663 | #define BC_MAX_NUM BC_MAX_STRING |
| 664 | // Unused apart from "limits" message. Just show a "biggish number" there. |
| 665 | //#define BC_MAX_NAME BC_MAX_STRING |
| 666 | //#define BC_MAX_EXP ((unsigned long) LONG_MAX) |
| 667 | //#define BC_MAX_VARS ((unsigned long) SIZE_MAX - 1) |
| 668 | #define BC_MAX_NAME_STR "999999999" |
| 669 | #define BC_MAX_EXP_STR "999999999" |
| 670 | #define BC_MAX_VARS_STR "999999999" |
| 671 | |
| 672 | #define BC_MAX_OBASE_STR "999" |
| 673 | |
| 674 | #if INT_MAX == 2147483647 |
| 675 | # define BC_MAX_DIM_STR "2147483647" |
| 676 | #elif INT_MAX == 9223372036854775807 |
| 677 | # define BC_MAX_DIM_STR "9223372036854775807" |
| 678 | #else |
| 679 | # error Strange INT_MAX |
| 680 | #endif |
| 681 | |
| 682 | #if UINT_MAX == 4294967295 |
| 683 | # define BC_MAX_SCALE_STR "4294967295" |
| 684 | # define BC_MAX_STRING_STR "4294967294" |
| 685 | #elif UINT_MAX == 18446744073709551615 |
| 686 | # define BC_MAX_SCALE_STR "18446744073709551615" |
| 687 | # define BC_MAX_STRING_STR "18446744073709551614" |
| 688 | #else |
| 689 | # error Strange UINT_MAX |
| 690 | #endif |
| 691 | #define BC_MAX_NUM_STR BC_MAX_STRING_STR |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 692 | |
Denys Vlasenko | 6d9146a | 2018-12-02 15:48:37 +0100 | [diff] [blame] | 693 | struct globals { |
Denys Vlasenko | 1a6a482 | 2018-12-06 09:20:32 +0100 | [diff] [blame] | 694 | IF_FEATURE_BC_SIGNALS(smallint ttyin;) |
Denys Vlasenko | c7a7ce0 | 2018-12-06 23:06:57 +0100 | [diff] [blame] | 695 | IF_FEATURE_CLEAN_UP(smallint exiting;) |
Denys Vlasenko | 69171dc | 2018-12-12 00:29:24 +0100 | [diff] [blame] | 696 | smallint in_read; |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 697 | smallint use_stdin; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 698 | |
| 699 | BcParse prs; |
| 700 | BcProgram prog; |
| 701 | |
Denys Vlasenko | 5318f81 | 2018-12-05 17:48:01 +0100 | [diff] [blame] | 702 | // For error messages. Can be set to current parsed line, |
| 703 | // or [TODO] to current executing line (can be before last parsed one) |
| 704 | unsigned err_line; |
| 705 | |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 706 | BcVec files; |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 707 | BcVec stdin_buffer; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 708 | |
| 709 | char *env_args; |
Denys Vlasenko | 95f93bd | 2018-12-06 10:29:12 +0100 | [diff] [blame] | 710 | |
| 711 | #if ENABLE_FEATURE_EDITING |
| 712 | line_input_t *line_input_state; |
| 713 | #endif |
Denys Vlasenko | 6d9146a | 2018-12-02 15:48:37 +0100 | [diff] [blame] | 714 | } FIX_ALIASING; |
| 715 | #define G (*ptr_to_globals) |
| 716 | #define INIT_G() do { \ |
| 717 | SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \ |
| 718 | } while (0) |
Denys Vlasenko | e873ff9 | 2018-12-06 00:29:22 +0100 | [diff] [blame] | 719 | #define FREE_G() do { \ |
| 720 | FREE_PTR_TO_GLOBALS(); \ |
| 721 | } while (0) |
Denys Vlasenko | d70d4a0 | 2018-12-04 20:58:40 +0100 | [diff] [blame] | 722 | #define G_posix (ENABLE_BC && (option_mask32 & BC_FLAG_S)) |
| 723 | #define G_warn (ENABLE_BC && (option_mask32 & BC_FLAG_W)) |
Denys Vlasenko | 6d0be10 | 2018-12-06 18:41:59 +0100 | [diff] [blame] | 724 | #define G_exreg (ENABLE_DC && (option_mask32 & DC_FLAG_X)) |
Denys Vlasenko | 1a6a482 | 2018-12-06 09:20:32 +0100 | [diff] [blame] | 725 | #if ENABLE_FEATURE_BC_SIGNALS |
Denys Vlasenko | b9c321d | 2018-12-07 12:41:42 +0100 | [diff] [blame] | 726 | # define G_interrupt bb_got_signal |
| 727 | # define G_ttyin G.ttyin |
Denys Vlasenko | 1a6a482 | 2018-12-06 09:20:32 +0100 | [diff] [blame] | 728 | #else |
Denys Vlasenko | b9c321d | 2018-12-07 12:41:42 +0100 | [diff] [blame] | 729 | # define G_interrupt 0 |
| 730 | # define G_ttyin 0 |
Denys Vlasenko | 1a6a482 | 2018-12-06 09:20:32 +0100 | [diff] [blame] | 731 | #endif |
Denys Vlasenko | c7a7ce0 | 2018-12-06 23:06:57 +0100 | [diff] [blame] | 732 | #if ENABLE_FEATURE_CLEAN_UP |
| 733 | # define G_exiting G.exiting |
| 734 | #else |
| 735 | # define G_exiting 0 |
| 736 | #endif |
Denys Vlasenko | 00d7779 | 2018-11-30 23:13:42 +0100 | [diff] [blame] | 737 | #define IS_BC (ENABLE_BC && (!ENABLE_DC || applet_name[0] == 'b')) |
Denys Vlasenko | 40534bb | 2018-12-13 16:59:24 +0100 | [diff] [blame] | 738 | #define IS_DC (ENABLE_DC && (!ENABLE_BC || applet_name[0] != 'b')) |
Denys Vlasenko | 00d7779 | 2018-11-30 23:13:42 +0100 | [diff] [blame] | 739 | |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 740 | #if ENABLE_BC |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 741 | |
Denys Vlasenko | bcb62a7 | 2018-12-05 20:17:48 +0100 | [diff] [blame] | 742 | // This is a bit array that corresponds to token types. An entry is |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 743 | // true if the token is valid in an expression, false otherwise. |
Denys Vlasenko | bcb62a7 | 2018-12-05 20:17:48 +0100 | [diff] [blame] | 744 | enum { |
| 745 | BC_PARSE_EXPRS_BITS = 0 |
| 746 | + ((uint64_t)((0 << 0)+(0 << 1)+(1 << 2)+(1 << 3)+(1 << 4)+(1 << 5)+(1 << 6)+(1 << 7)) << (0*8)) |
| 747 | + ((uint64_t)((1 << 0)+(1 << 1)+(1 << 2)+(1 << 3)+(1 << 4)+(1 << 5)+(1 << 6)+(1 << 7)) << (1*8)) |
| 748 | + ((uint64_t)((1 << 0)+(1 << 1)+(1 << 2)+(1 << 3)+(1 << 4)+(1 << 5)+(1 << 6)+(1 << 7)) << (2*8)) |
| 749 | + ((uint64_t)((1 << 0)+(1 << 1)+(1 << 2)+(0 << 3)+(0 << 4)+(1 << 5)+(1 << 6)+(0 << 7)) << (3*8)) |
| 750 | + ((uint64_t)((0 << 0)+(0 << 1)+(0 << 2)+(0 << 3)+(0 << 4)+(0 << 5)+(1 << 6)+(1 << 7)) << (4*8)) |
| 751 | + ((uint64_t)((0 << 0)+(0 << 1)+(0 << 2)+(0 << 3)+(0 << 4)+(0 << 5)+(0 << 6)+(1 << 7)) << (5*8)) |
| 752 | + ((uint64_t)((0 << 0)+(1 << 1)+(1 << 2)+(1 << 3)+(1 << 4)+(0 << 5)+(0 << 6)+(1 << 7)) << (6*8)) |
| 753 | + ((uint64_t)((0 << 0)+(1 << 1)+(1 << 2)+(0 << 3) ) << (7*8)) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 754 | }; |
Denys Vlasenko | bcb62a7 | 2018-12-05 20:17:48 +0100 | [diff] [blame] | 755 | static ALWAYS_INLINE long bc_parse_exprs(unsigned i) |
| 756 | { |
| 757 | #if ULONG_MAX > 0xffffffff |
| 758 | // 64-bit version (will not work correctly for 32-bit longs!) |
| 759 | return BC_PARSE_EXPRS_BITS & (1UL << i); |
| 760 | #else |
| 761 | // 32-bit version |
| 762 | unsigned long m = (uint32_t)BC_PARSE_EXPRS_BITS; |
| 763 | if (i >= 32) { |
| 764 | m = (uint32_t)(BC_PARSE_EXPRS_BITS >> 32); |
| 765 | i &= 31; |
| 766 | } |
| 767 | return m & (1UL << i); |
| 768 | #endif |
| 769 | } |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 770 | |
| 771 | // This is an array of data for operators that correspond to token types. |
Denys Vlasenko | 6543758 | 2018-12-05 19:37:19 +0100 | [diff] [blame] | 772 | static const uint8_t bc_parse_ops[] = { |
| 773 | #define OP(p,l) ((int)(l) * 0x10 + (p)) |
Denys Vlasenko | bcb62a7 | 2018-12-05 20:17:48 +0100 | [diff] [blame] | 774 | OP(0, false), OP( 0, false ), // inc dec |
| 775 | OP(1, false), // neg |
Denys Vlasenko | 6543758 | 2018-12-05 19:37:19 +0100 | [diff] [blame] | 776 | OP(2, false), |
Denys Vlasenko | bcb62a7 | 2018-12-05 20:17:48 +0100 | [diff] [blame] | 777 | OP(3, true ), OP( 3, true ), OP( 3, true ), // pow mul div |
| 778 | OP(4, true ), OP( 4, true ), // mod + - |
| 779 | OP(6, true ), OP( 6, true ), OP( 6, true ), OP( 6, true ), OP( 6, true ), OP( 6, true ), // == <= >= != < > |
| 780 | OP(1, false), // not |
| 781 | OP(7, true ), OP( 7, true ), // or and |
| 782 | OP(5, false), OP( 5, false ), OP( 5, false ), OP( 5, false ), OP( 5, false ), // ^= *= /= %= += |
| 783 | OP(5, false), OP( 5, false ), // -= = |
Denys Vlasenko | 6543758 | 2018-12-05 19:37:19 +0100 | [diff] [blame] | 784 | #undef OP |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 785 | }; |
Denys Vlasenko | 6543758 | 2018-12-05 19:37:19 +0100 | [diff] [blame] | 786 | #define bc_parse_op_PREC(i) (bc_parse_ops[i] & 0x0f) |
| 787 | #define bc_parse_op_LEFT(i) (bc_parse_ops[i] & 0x10) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 788 | |
Denys Vlasenko | 18c6b54 | 2018-12-07 12:57:32 +0100 | [diff] [blame] | 789 | // Byte array of up to 4 BC_LEX's, packed into 32-bit word |
| 790 | typedef uint32_t BcParseNext; |
| 791 | |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 792 | // These identify what tokens can come after expressions in certain cases. |
Denys Vlasenko | 18c6b54 | 2018-12-07 12:57:32 +0100 | [diff] [blame] | 793 | enum { |
| 794 | #define BC_PARSE_NEXT4(a,b,c,d) ( (a) | ((b)<<8) | ((c)<<16) | ((((d)|0x80)<<24)) ) |
| 795 | #define BC_PARSE_NEXT2(a,b) BC_PARSE_NEXT4(a,b,0xff,0xff) |
| 796 | #define BC_PARSE_NEXT1(a) BC_PARSE_NEXT4(a,0xff,0xff,0xff) |
| 797 | bc_parse_next_expr = BC_PARSE_NEXT4(BC_LEX_NLINE, BC_LEX_SCOLON, BC_LEX_RBRACE, BC_LEX_EOF), |
| 798 | bc_parse_next_param = BC_PARSE_NEXT2(BC_LEX_RPAREN, BC_LEX_COMMA), |
| 799 | bc_parse_next_print = BC_PARSE_NEXT4(BC_LEX_COMMA, BC_LEX_NLINE, BC_LEX_SCOLON, BC_LEX_EOF), |
| 800 | bc_parse_next_rel = BC_PARSE_NEXT1(BC_LEX_RPAREN), |
| 801 | bc_parse_next_elem = BC_PARSE_NEXT1(BC_LEX_RBRACKET), |
| 802 | bc_parse_next_for = BC_PARSE_NEXT1(BC_LEX_SCOLON), |
| 803 | bc_parse_next_read = BC_PARSE_NEXT2(BC_LEX_NLINE, BC_LEX_EOF), |
| 804 | #undef BC_PARSE_NEXT4 |
| 805 | #undef BC_PARSE_NEXT2 |
| 806 | #undef BC_PARSE_NEXT1 |
| 807 | }; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 808 | #endif // ENABLE_BC |
| 809 | |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 810 | #if ENABLE_DC |
Denys Vlasenko | 18c6b54 | 2018-12-07 12:57:32 +0100 | [diff] [blame] | 811 | static const //BcLexType - should be this type, but narrower type saves size: |
| 812 | uint8_t |
| 813 | dc_lex_regs[] = { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 814 | BC_LEX_OP_REL_EQ, BC_LEX_OP_REL_LE, BC_LEX_OP_REL_GE, BC_LEX_OP_REL_NE, |
| 815 | BC_LEX_OP_REL_LT, BC_LEX_OP_REL_GT, BC_LEX_SCOLON, BC_LEX_COLON, |
| 816 | BC_LEX_ELSE, BC_LEX_LOAD, BC_LEX_LOAD_POP, BC_LEX_OP_ASSIGN, |
| 817 | BC_LEX_STORE_PUSH, |
| 818 | }; |
| 819 | |
Denys Vlasenko | 18c6b54 | 2018-12-07 12:57:32 +0100 | [diff] [blame] | 820 | static const //BcLexType - should be this type |
| 821 | uint8_t |
| 822 | dc_lex_tokens[] = { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 823 | BC_LEX_OP_MODULUS, BC_LEX_INVALID, BC_LEX_INVALID, BC_LEX_LPAREN, |
| 824 | BC_LEX_INVALID, BC_LEX_OP_MULTIPLY, BC_LEX_OP_PLUS, BC_LEX_INVALID, |
| 825 | BC_LEX_OP_MINUS, BC_LEX_INVALID, BC_LEX_OP_DIVIDE, |
| 826 | BC_LEX_INVALID, BC_LEX_INVALID, BC_LEX_INVALID, BC_LEX_INVALID, |
| 827 | BC_LEX_INVALID, BC_LEX_INVALID, BC_LEX_INVALID, BC_LEX_INVALID, |
| 828 | BC_LEX_INVALID, BC_LEX_INVALID, |
| 829 | BC_LEX_COLON, BC_LEX_SCOLON, BC_LEX_OP_REL_GT, BC_LEX_OP_REL_EQ, |
| 830 | BC_LEX_OP_REL_LT, BC_LEX_KEY_READ, BC_LEX_INVALID, |
| 831 | BC_LEX_INVALID, BC_LEX_INVALID, BC_LEX_INVALID, BC_LEX_INVALID, |
| 832 | BC_LEX_INVALID, BC_LEX_INVALID, BC_LEX_EQ_NO_REG, BC_LEX_INVALID, |
| 833 | BC_LEX_KEY_IBASE, BC_LEX_INVALID, BC_LEX_KEY_SCALE, BC_LEX_LOAD_POP, |
| 834 | BC_LEX_INVALID, BC_LEX_OP_BOOL_NOT, BC_LEX_KEY_OBASE, BC_LEX_PRINT_STREAM, |
| 835 | BC_LEX_NQUIT, BC_LEX_POP, BC_LEX_STORE_PUSH, BC_LEX_INVALID, BC_LEX_INVALID, |
| 836 | BC_LEX_INVALID, BC_LEX_INVALID, BC_LEX_SCALE_FACTOR, BC_LEX_INVALID, |
| 837 | BC_LEX_KEY_LENGTH, BC_LEX_INVALID, BC_LEX_INVALID, BC_LEX_INVALID, |
| 838 | BC_LEX_OP_POWER, BC_LEX_NEG, BC_LEX_INVALID, |
| 839 | BC_LEX_ASCIIFY, BC_LEX_INVALID, BC_LEX_CLEAR_STACK, BC_LEX_DUPLICATE, |
| 840 | BC_LEX_ELSE, BC_LEX_PRINT_STACK, BC_LEX_INVALID, BC_LEX_INVALID, |
| 841 | BC_LEX_STORE_IBASE, BC_LEX_INVALID, BC_LEX_STORE_SCALE, BC_LEX_LOAD, |
| 842 | BC_LEX_INVALID, BC_LEX_PRINT_POP, BC_LEX_STORE_OBASE, BC_LEX_KEY_PRINT, |
| 843 | BC_LEX_KEY_QUIT, BC_LEX_SWAP, BC_LEX_OP_ASSIGN, BC_LEX_INVALID, |
| 844 | BC_LEX_INVALID, BC_LEX_KEY_SQRT, BC_LEX_INVALID, BC_LEX_EXECUTE, |
| 845 | BC_LEX_INVALID, BC_LEX_STACK_LEVEL, |
| 846 | BC_LEX_LBRACE, BC_LEX_OP_MODEXP, BC_LEX_INVALID, BC_LEX_OP_DIVMOD, |
| 847 | BC_LEX_INVALID |
| 848 | }; |
| 849 | |
Denys Vlasenko | 18c6b54 | 2018-12-07 12:57:32 +0100 | [diff] [blame] | 850 | static const //BcInst - should be this type. Using signed narrow type since BC_INST_INVALID is -1 |
| 851 | int8_t |
| 852 | dc_parse_insts[] = { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 853 | BC_INST_INVALID, BC_INST_INVALID, BC_INST_INVALID, BC_INST_REL_GE, |
| 854 | BC_INST_INVALID, BC_INST_POWER, BC_INST_MULTIPLY, BC_INST_DIVIDE, |
| 855 | BC_INST_MODULUS, BC_INST_PLUS, BC_INST_MINUS, |
| 856 | BC_INST_INVALID, BC_INST_INVALID, BC_INST_INVALID, BC_INST_INVALID, |
| 857 | BC_INST_INVALID, BC_INST_INVALID, |
| 858 | BC_INST_BOOL_NOT, BC_INST_INVALID, BC_INST_INVALID, |
| 859 | BC_INST_INVALID, BC_INST_INVALID, BC_INST_INVALID, BC_INST_INVALID, |
| 860 | BC_INST_INVALID, BC_INST_INVALID, BC_INST_INVALID, |
| 861 | BC_INST_INVALID, BC_INST_INVALID, BC_INST_REL_GT, BC_INST_INVALID, |
| 862 | BC_INST_INVALID, BC_INST_INVALID, BC_INST_INVALID, BC_INST_REL_GE, |
| 863 | BC_INST_INVALID, BC_INST_INVALID, |
| 864 | BC_INST_INVALID, BC_INST_INVALID, BC_INST_INVALID, |
| 865 | BC_INST_INVALID, BC_INST_INVALID, BC_INST_INVALID, BC_INST_INVALID, |
| 866 | BC_INST_INVALID, BC_INST_INVALID, BC_INST_INVALID, BC_INST_IBASE, |
| 867 | BC_INST_INVALID, BC_INST_INVALID, BC_INST_LENGTH, BC_INST_INVALID, |
| 868 | BC_INST_OBASE, BC_INST_PRINT, BC_INST_QUIT, BC_INST_INVALID, |
| 869 | BC_INST_INVALID, BC_INST_SCALE, BC_INST_SQRT, BC_INST_INVALID, |
| 870 | BC_INST_REL_EQ, BC_INST_MODEXP, BC_INST_DIVMOD, BC_INST_INVALID, |
| 871 | BC_INST_INVALID, BC_INST_EXECUTE, BC_INST_PRINT_STACK, BC_INST_CLEAR_STACK, |
| 872 | BC_INST_STACK_LEN, BC_INST_DUPLICATE, BC_INST_SWAP, BC_INST_POP, |
| 873 | BC_INST_ASCIIFY, BC_INST_PRINT_STREAM, BC_INST_INVALID, BC_INST_INVALID, |
| 874 | BC_INST_INVALID, BC_INST_INVALID, BC_INST_INVALID, BC_INST_INVALID, |
| 875 | BC_INST_PRINT, BC_INST_NQUIT, BC_INST_SCALE_FUNC, |
| 876 | }; |
| 877 | #endif // ENABLE_DC |
| 878 | |
Denys Vlasenko | c2d15df | 2018-12-11 17:56:09 +0100 | [diff] [blame] | 879 | // In configurations where errors abort instead of propagating error |
| 880 | // return code up the call chain, functions returning BC_STATUS |
| 881 | // actually don't return anything, they always succeed and return "void". |
| 882 | // A macro wrapper is provided, which makes this statement work: |
| 883 | // s = zbc_func(...) |
| 884 | // and makes it visible to the compiler that s is always zero, |
| 885 | // allowing compiler to optimize dead code after the statement. |
| 886 | // |
| 887 | // To make code more readable, each such function has a "z" |
| 888 | // ("always returning zero") prefix, i.e. zbc_foo or zdc_foo. |
| 889 | // |
| 890 | #if ENABLE_FEATURE_BC_SIGNALS || ENABLE_FEATURE_CLEAN_UP |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 891 | # define ERRORS_ARE_FATAL 0 |
Denys Vlasenko | c2d15df | 2018-12-11 17:56:09 +0100 | [diff] [blame] | 892 | # define ERRORFUNC /*nothing*/ |
| 893 | # define ERROR_RETURN(a) a |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 894 | //moved up: # define BC_STATUS BcStatus |
Denys Vlasenko | c2d15df | 2018-12-11 17:56:09 +0100 | [diff] [blame] | 895 | # define RETURN_STATUS(v) return (v) |
| 896 | #else |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 897 | # define ERRORS_ARE_FATAL 1 |
Denys Vlasenko | c2d15df | 2018-12-11 17:56:09 +0100 | [diff] [blame] | 898 | # define ERRORFUNC NORETURN |
| 899 | # define ERROR_RETURN(a) /*nothing*/ |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 900 | //moved up: # define BC_STATUS void |
Denys Vlasenko | c2d15df | 2018-12-11 17:56:09 +0100 | [diff] [blame] | 901 | # define RETURN_STATUS(v) do { ((void)(v)); return; } while (0) |
| 902 | #endif |
| 903 | |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 904 | #define BC_NUM_NEG(n, neg) ((((ssize_t)(n)) ^ -((ssize_t)(neg))) + (neg)) |
| 905 | #define BC_NUM_ONE(n) ((n)->len == 1 && (n)->rdx == 0 && (n)->num[0] == 1) |
| 906 | #define BC_NUM_INT(n) ((n)->len - (n)->rdx) |
| 907 | //#define BC_NUM_AREQ(a, b) (BC_MAX((a)->rdx, (b)->rdx) + BC_MAX(BC_NUM_INT(a), BC_NUM_INT(b)) + 1) |
| 908 | static /*ALWAYS_INLINE*/ size_t BC_NUM_AREQ(BcNum *a, BcNum *b) |
| 909 | { |
| 910 | return BC_MAX(a->rdx, b->rdx) + BC_MAX(BC_NUM_INT(a), BC_NUM_INT(b)) + 1; |
| 911 | } |
| 912 | //#define BC_NUM_MREQ(a, b, scale) (BC_NUM_INT(a) + BC_NUM_INT(b) + BC_MAX((scale), (a)->rdx + (b)->rdx) + 1) |
| 913 | static /*ALWAYS_INLINE*/ size_t BC_NUM_MREQ(BcNum *a, BcNum *b, size_t scale) |
| 914 | { |
| 915 | return BC_NUM_INT(a) + BC_NUM_INT(b) + BC_MAX(scale, a->rdx + b->rdx) + 1; |
| 916 | } |
| 917 | |
Denys Vlasenko | c2d15df | 2018-12-11 17:56:09 +0100 | [diff] [blame] | 918 | typedef void (*BcNumDigitOp)(size_t, size_t, bool) FAST_FUNC; |
| 919 | |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 920 | typedef BC_STATUS (*BcNumBinaryOp)(BcNum *, BcNum *, BcNum *, size_t) FAST_FUNC; |
Denys Vlasenko | c2d15df | 2018-12-11 17:56:09 +0100 | [diff] [blame] | 921 | |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 922 | static BC_STATUS zbc_num_binary(BcNum *a, BcNum *b, BcNum *c, size_t scale, |
| 923 | BcNumBinaryOp op, size_t req); |
| 924 | static FAST_FUNC BC_STATUS zbc_num_a(BcNum *a, BcNum *b, BcNum *restrict c, size_t scale); |
| 925 | static FAST_FUNC BC_STATUS zbc_num_s(BcNum *a, BcNum *b, BcNum *restrict c, size_t scale); |
| 926 | static FAST_FUNC BC_STATUS zbc_num_p(BcNum *a, BcNum *b, BcNum *restrict c, size_t scale); |
| 927 | static FAST_FUNC BC_STATUS zbc_num_m(BcNum *a, BcNum *b, BcNum *restrict c, size_t scale); |
| 928 | static FAST_FUNC BC_STATUS zbc_num_d(BcNum *a, BcNum *b, BcNum *restrict c, size_t scale); |
| 929 | static FAST_FUNC BC_STATUS zbc_num_rem(BcNum *a, BcNum *b, BcNum *restrict c, size_t scale); |
| 930 | |
| 931 | static FAST_FUNC BC_STATUS zbc_num_add(BcNum *a, BcNum *b, BcNum *c, size_t scale) |
| 932 | { |
| 933 | BcNumBinaryOp op = (!a->neg == !b->neg) ? zbc_num_a : zbc_num_s; |
| 934 | (void) scale; |
| 935 | RETURN_STATUS(zbc_num_binary(a, b, c, false, op, BC_NUM_AREQ(a, b))); |
| 936 | } |
| 937 | |
| 938 | static FAST_FUNC BC_STATUS zbc_num_sub(BcNum *a, BcNum *b, BcNum *c, size_t scale) |
| 939 | { |
| 940 | BcNumBinaryOp op = (!a->neg == !b->neg) ? zbc_num_s : zbc_num_a; |
| 941 | (void) scale; |
| 942 | RETURN_STATUS(zbc_num_binary(a, b, c, true, op, BC_NUM_AREQ(a, b))); |
| 943 | } |
| 944 | |
| 945 | static FAST_FUNC BC_STATUS zbc_num_mul(BcNum *a, BcNum *b, BcNum *c, size_t scale) |
| 946 | { |
| 947 | size_t req = BC_NUM_MREQ(a, b, scale); |
| 948 | RETURN_STATUS(zbc_num_binary(a, b, c, scale, zbc_num_m, req)); |
| 949 | } |
| 950 | |
| 951 | static FAST_FUNC BC_STATUS zbc_num_div(BcNum *a, BcNum *b, BcNum *c, size_t scale) |
| 952 | { |
| 953 | size_t req = BC_NUM_MREQ(a, b, scale); |
| 954 | RETURN_STATUS(zbc_num_binary(a, b, c, scale, zbc_num_d, req)); |
| 955 | } |
| 956 | |
| 957 | static FAST_FUNC BC_STATUS zbc_num_mod(BcNum *a, BcNum *b, BcNum *c, size_t scale) |
| 958 | { |
| 959 | size_t req = BC_NUM_MREQ(a, b, scale); |
| 960 | RETURN_STATUS(zbc_num_binary(a, b, c, scale, zbc_num_rem, req)); |
| 961 | } |
| 962 | |
| 963 | static FAST_FUNC BC_STATUS zbc_num_pow(BcNum *a, BcNum *b, BcNum *c, size_t scale) |
| 964 | { |
| 965 | RETURN_STATUS(zbc_num_binary(a, b, c, scale, zbc_num_p, a->len * b->len + 1)); |
| 966 | } |
Denys Vlasenko | c2d15df | 2018-12-11 17:56:09 +0100 | [diff] [blame] | 967 | |
Denys Vlasenko | 1aeacef | 2018-12-11 19:12:13 +0100 | [diff] [blame] | 968 | static const BcNumBinaryOp zbc_program_ops[] = { |
| 969 | zbc_num_pow, zbc_num_mul, zbc_num_div, zbc_num_mod, zbc_num_add, zbc_num_sub, |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 970 | }; |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 971 | #if ERRORS_ARE_FATAL |
| 972 | # define zbc_num_add(...) (zbc_num_add(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 973 | # define zbc_num_sub(...) (zbc_num_sub(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 974 | # define zbc_num_mul(...) (zbc_num_mul(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 975 | # define zbc_num_div(...) (zbc_num_div(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 976 | # define zbc_num_mod(...) (zbc_num_mod(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 977 | # define zbc_num_pow(...) (zbc_num_pow(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 978 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 979 | |
Denys Vlasenko | d4744ad | 2018-12-03 14:28:51 +0100 | [diff] [blame] | 980 | static void fflush_and_check(void) |
| 981 | { |
| 982 | fflush_all(); |
| 983 | if (ferror(stdout) || ferror(stderr)) |
| 984 | bb_perror_msg_and_die("output error"); |
| 985 | } |
| 986 | |
Denys Vlasenko | e873ff9 | 2018-12-06 00:29:22 +0100 | [diff] [blame] | 987 | #if ENABLE_FEATURE_CLEAN_UP |
Denys Vlasenko | c7a7ce0 | 2018-12-06 23:06:57 +0100 | [diff] [blame] | 988 | #define QUIT_OR_RETURN_TO_MAIN \ |
Denys Vlasenko | e873ff9 | 2018-12-06 00:29:22 +0100 | [diff] [blame] | 989 | do { \ |
Denys Vlasenko | 1a6a482 | 2018-12-06 09:20:32 +0100 | [diff] [blame] | 990 | IF_FEATURE_BC_SIGNALS(G_ttyin = 0;) /* do not loop in main loop anymore */ \ |
Denys Vlasenko | c7a7ce0 | 2018-12-06 23:06:57 +0100 | [diff] [blame] | 991 | G_exiting = 1; \ |
Denys Vlasenko | e873ff9 | 2018-12-06 00:29:22 +0100 | [diff] [blame] | 992 | return BC_STATUS_FAILURE; \ |
| 993 | } while (0) |
| 994 | #else |
Denys Vlasenko | c7a7ce0 | 2018-12-06 23:06:57 +0100 | [diff] [blame] | 995 | #define QUIT_OR_RETURN_TO_MAIN quit() |
Denys Vlasenko | e873ff9 | 2018-12-06 00:29:22 +0100 | [diff] [blame] | 996 | #endif |
| 997 | |
Denys Vlasenko | cfdc133 | 2018-12-03 14:02:35 +0100 | [diff] [blame] | 998 | static void quit(void) NORETURN; |
| 999 | static void quit(void) |
| 1000 | { |
Denys Vlasenko | d4744ad | 2018-12-03 14:28:51 +0100 | [diff] [blame] | 1001 | if (ferror(stdin)) |
| 1002 | bb_perror_msg_and_die("input error"); |
| 1003 | fflush_and_check(); |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 1004 | dbg_exec("quit(): exiting with exitcode SUCCESS"); |
Denys Vlasenko | d4744ad | 2018-12-03 14:28:51 +0100 | [diff] [blame] | 1005 | exit(0); |
Denys Vlasenko | cfdc133 | 2018-12-03 14:02:35 +0100 | [diff] [blame] | 1006 | } |
| 1007 | |
Denys Vlasenko | 5318f81 | 2018-12-05 17:48:01 +0100 | [diff] [blame] | 1008 | static void bc_verror_msg(const char *fmt, va_list p) |
| 1009 | { |
Denys Vlasenko | 8226912 | 2018-12-14 16:30:56 +0100 | [diff] [blame] | 1010 | const char *sv = sv; // for compiler |
Denys Vlasenko | 5318f81 | 2018-12-05 17:48:01 +0100 | [diff] [blame] | 1011 | if (G.prog.file) { |
| 1012 | sv = applet_name; |
| 1013 | applet_name = xasprintf("%s: %s:%u", applet_name, G.prog.file, G.err_line); |
| 1014 | } |
| 1015 | bb_verror_msg(fmt, p, NULL); |
| 1016 | if (G.prog.file) { |
| 1017 | free((char*)applet_name); |
| 1018 | applet_name = sv; |
| 1019 | } |
| 1020 | } |
| 1021 | |
Denys Vlasenko | 86e63cd | 2018-12-10 19:46:53 +0100 | [diff] [blame] | 1022 | static NOINLINE ERRORFUNC int bc_error_fmt(const char *fmt, ...) |
Denys Vlasenko | c1c2470 | 2018-12-03 16:06:02 +0100 | [diff] [blame] | 1023 | { |
| 1024 | va_list p; |
| 1025 | |
| 1026 | va_start(p, fmt); |
Denys Vlasenko | 5318f81 | 2018-12-05 17:48:01 +0100 | [diff] [blame] | 1027 | bc_verror_msg(fmt, p); |
Denys Vlasenko | c1c2470 | 2018-12-03 16:06:02 +0100 | [diff] [blame] | 1028 | va_end(p); |
Denys Vlasenko | 0409ad3 | 2018-12-05 16:39:22 +0100 | [diff] [blame] | 1029 | |
Denys Vlasenko | 1a6a482 | 2018-12-06 09:20:32 +0100 | [diff] [blame] | 1030 | if (!ENABLE_FEATURE_CLEAN_UP && !G_ttyin) |
Denys Vlasenko | c1c2470 | 2018-12-03 16:06:02 +0100 | [diff] [blame] | 1031 | exit(1); |
Denys Vlasenko | 86e63cd | 2018-12-10 19:46:53 +0100 | [diff] [blame] | 1032 | ERROR_RETURN(return BC_STATUS_FAILURE;) |
Denys Vlasenko | c1c2470 | 2018-12-03 16:06:02 +0100 | [diff] [blame] | 1033 | } |
| 1034 | |
Denys Vlasenko | 23c2e9f | 2018-12-06 11:43:17 +0100 | [diff] [blame] | 1035 | #if ENABLE_BC |
Denys Vlasenko | 24fb2cd | 2018-12-05 16:03:46 +0100 | [diff] [blame] | 1036 | static NOINLINE int bc_posix_error_fmt(const char *fmt, ...) |
Denys Vlasenko | 9b70f19 | 2018-12-04 20:51:40 +0100 | [diff] [blame] | 1037 | { |
| 1038 | va_list p; |
| 1039 | |
Denys Vlasenko | 24fb2cd | 2018-12-05 16:03:46 +0100 | [diff] [blame] | 1040 | // Are non-POSIX constructs totally ok? |
Denys Vlasenko | d70d4a0 | 2018-12-04 20:58:40 +0100 | [diff] [blame] | 1041 | if (!(option_mask32 & (BC_FLAG_S|BC_FLAG_W))) |
Denys Vlasenko | 24fb2cd | 2018-12-05 16:03:46 +0100 | [diff] [blame] | 1042 | return BC_STATUS_SUCCESS; // yes |
Denys Vlasenko | 9b70f19 | 2018-12-04 20:51:40 +0100 | [diff] [blame] | 1043 | |
| 1044 | va_start(p, fmt); |
Denys Vlasenko | 5318f81 | 2018-12-05 17:48:01 +0100 | [diff] [blame] | 1045 | bc_verror_msg(fmt, p); |
Denys Vlasenko | 9b70f19 | 2018-12-04 20:51:40 +0100 | [diff] [blame] | 1046 | va_end(p); |
| 1047 | |
| 1048 | // Do we treat non-POSIX constructs as errors? |
Denys Vlasenko | d70d4a0 | 2018-12-04 20:58:40 +0100 | [diff] [blame] | 1049 | if (!(option_mask32 & BC_FLAG_S)) |
Denys Vlasenko | 9b70f19 | 2018-12-04 20:51:40 +0100 | [diff] [blame] | 1050 | return BC_STATUS_SUCCESS; // no, it's a warning |
Denys Vlasenko | 1a6a482 | 2018-12-06 09:20:32 +0100 | [diff] [blame] | 1051 | if (!ENABLE_FEATURE_CLEAN_UP && !G_ttyin) |
Denys Vlasenko | 9b70f19 | 2018-12-04 20:51:40 +0100 | [diff] [blame] | 1052 | exit(1); |
| 1053 | return BC_STATUS_FAILURE; |
| 1054 | } |
Denys Vlasenko | 23c2e9f | 2018-12-06 11:43:17 +0100 | [diff] [blame] | 1055 | #endif |
Denys Vlasenko | 9b70f19 | 2018-12-04 20:51:40 +0100 | [diff] [blame] | 1056 | |
Denys Vlasenko | 24fb2cd | 2018-12-05 16:03:46 +0100 | [diff] [blame] | 1057 | // We use error functions with "return bc_error(FMT[, PARAMS])" idiom. |
| 1058 | // This idiom begs for tail-call optimization, but for it to work, |
Denys Vlasenko | 95f93bd | 2018-12-06 10:29:12 +0100 | [diff] [blame] | 1059 | // function must not have caller-cleaned parameters on stack. |
| 1060 | // Unfortunately, vararg function API does exactly that on most arches. |
| 1061 | // Thus, use these shims for the cases when we have no vararg PARAMS: |
Denys Vlasenko | 86e63cd | 2018-12-10 19:46:53 +0100 | [diff] [blame] | 1062 | static ERRORFUNC int bc_error(const char *msg) |
Denys Vlasenko | 24fb2cd | 2018-12-05 16:03:46 +0100 | [diff] [blame] | 1063 | { |
Denys Vlasenko | 86e63cd | 2018-12-10 19:46:53 +0100 | [diff] [blame] | 1064 | ERROR_RETURN(return) bc_error_fmt("%s", msg); |
| 1065 | } |
| 1066 | static ERRORFUNC int bc_error_bad_character(char c) |
| 1067 | { |
| 1068 | ERROR_RETURN(return) bc_error_fmt("bad character '%c'", c); |
| 1069 | } |
| 1070 | static ERRORFUNC int bc_error_bad_expression(void) |
| 1071 | { |
| 1072 | ERROR_RETURN(return) bc_error("bad expression"); |
| 1073 | } |
| 1074 | static ERRORFUNC int bc_error_bad_token(void) |
| 1075 | { |
| 1076 | ERROR_RETURN(return) bc_error("bad token"); |
| 1077 | } |
| 1078 | static ERRORFUNC int bc_error_stack_has_too_few_elements(void) |
| 1079 | { |
| 1080 | ERROR_RETURN(return) bc_error("stack has too few elements"); |
| 1081 | } |
| 1082 | static ERRORFUNC int bc_error_variable_is_wrong_type(void) |
| 1083 | { |
| 1084 | ERROR_RETURN(return) bc_error("variable is wrong type"); |
| 1085 | } |
| 1086 | static ERRORFUNC int bc_error_nested_read_call(void) |
| 1087 | { |
| 1088 | ERROR_RETURN(return) bc_error("read() call inside of a read() call"); |
Denys Vlasenko | 24fb2cd | 2018-12-05 16:03:46 +0100 | [diff] [blame] | 1089 | } |
Denys Vlasenko | 23c2e9f | 2018-12-06 11:43:17 +0100 | [diff] [blame] | 1090 | #if ENABLE_BC |
Denys Vlasenko | a6f84e1 | 2018-12-06 11:10:11 +0100 | [diff] [blame] | 1091 | static int bc_POSIX_requires(const char *msg) |
Denys Vlasenko | 24fb2cd | 2018-12-05 16:03:46 +0100 | [diff] [blame] | 1092 | { |
Denys Vlasenko | a6f84e1 | 2018-12-06 11:10:11 +0100 | [diff] [blame] | 1093 | return bc_posix_error_fmt("POSIX requires %s", msg); |
Denys Vlasenko | 24fb2cd | 2018-12-05 16:03:46 +0100 | [diff] [blame] | 1094 | } |
Denys Vlasenko | 0064679 | 2018-12-05 18:12:27 +0100 | [diff] [blame] | 1095 | static int bc_POSIX_does_not_allow(const char *msg) |
| 1096 | { |
| 1097 | return bc_posix_error_fmt("%s%s", "POSIX does not allow ", msg); |
| 1098 | } |
| 1099 | static int bc_POSIX_does_not_allow_bool_ops_this_is_bad(const char *msg) |
| 1100 | { |
| 1101 | return bc_posix_error_fmt("%s%s %s", "POSIX does not allow ", "boolean operators; the following is bad:", msg); |
| 1102 | } |
| 1103 | static int bc_POSIX_does_not_allow_empty_X_expression_in_for(const char *msg) |
| 1104 | { |
| 1105 | return bc_posix_error_fmt("%san empty %s expression in a for loop", "POSIX does not allow ", msg); |
| 1106 | } |
Denys Vlasenko | 23c2e9f | 2018-12-06 11:43:17 +0100 | [diff] [blame] | 1107 | #endif |
Denys Vlasenko | 24fb2cd | 2018-12-05 16:03:46 +0100 | [diff] [blame] | 1108 | |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1109 | static void bc_vec_grow(BcVec *v, size_t n) |
| 1110 | { |
| 1111 | size_t cap = v->cap * 2; |
| 1112 | while (cap < v->len + n) cap *= 2; |
| 1113 | v->v = xrealloc(v->v, v->size * cap); |
| 1114 | v->cap = cap; |
| 1115 | } |
| 1116 | |
| 1117 | static void bc_vec_init(BcVec *v, size_t esize, BcVecFree dtor) |
| 1118 | { |
| 1119 | v->size = esize; |
| 1120 | v->cap = BC_VEC_START_CAP; |
| 1121 | v->len = 0; |
| 1122 | v->dtor = dtor; |
| 1123 | v->v = xmalloc(esize * BC_VEC_START_CAP); |
| 1124 | } |
| 1125 | |
Denys Vlasenko | 7d62801 | 2018-12-04 21:46:47 +0100 | [diff] [blame] | 1126 | static void bc_char_vec_init(BcVec *v) |
| 1127 | { |
| 1128 | bc_vec_init(v, sizeof(char), NULL); |
| 1129 | } |
| 1130 | |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1131 | static void bc_vec_expand(BcVec *v, size_t req) |
| 1132 | { |
| 1133 | if (v->cap < req) { |
| 1134 | v->v = xrealloc(v->v, v->size * req); |
| 1135 | v->cap = req; |
| 1136 | } |
| 1137 | } |
| 1138 | |
Denys Vlasenko | b23ac51 | 2018-12-06 13:10:56 +0100 | [diff] [blame] | 1139 | static void bc_vec_pop(BcVec *v) |
| 1140 | { |
| 1141 | v->len--; |
| 1142 | if (v->dtor) |
| 1143 | v->dtor(v->v + (v->size * v->len)); |
| 1144 | } |
Denys Vlasenko | 2fa11b6 | 2018-12-06 12:34:39 +0100 | [diff] [blame] | 1145 | |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1146 | static void bc_vec_npop(BcVec *v, size_t n) |
| 1147 | { |
| 1148 | if (!v->dtor) |
| 1149 | v->len -= n; |
| 1150 | else { |
| 1151 | size_t len = v->len - n; |
| 1152 | while (v->len > len) v->dtor(v->v + (v->size * --v->len)); |
| 1153 | } |
| 1154 | } |
| 1155 | |
Denys Vlasenko | 7d62801 | 2018-12-04 21:46:47 +0100 | [diff] [blame] | 1156 | static void bc_vec_pop_all(BcVec *v) |
| 1157 | { |
| 1158 | bc_vec_npop(v, v->len); |
| 1159 | } |
| 1160 | |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1161 | static void bc_vec_push(BcVec *v, const void *data) |
| 1162 | { |
| 1163 | if (v->len + 1 > v->cap) bc_vec_grow(v, 1); |
| 1164 | memmove(v->v + (v->size * v->len), data, v->size); |
| 1165 | v->len += 1; |
| 1166 | } |
| 1167 | |
| 1168 | static void bc_vec_pushByte(BcVec *v, char data) |
| 1169 | { |
| 1170 | bc_vec_push(v, &data); |
| 1171 | } |
| 1172 | |
Denys Vlasenko | 08c033c | 2018-12-05 16:55:08 +0100 | [diff] [blame] | 1173 | static void bc_vec_pushZeroByte(BcVec *v) |
| 1174 | { |
| 1175 | //bc_vec_pushByte(v, '\0'); |
| 1176 | // better: |
| 1177 | bc_vec_push(v, &const_int_0); |
| 1178 | } |
| 1179 | |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1180 | static void bc_vec_pushAt(BcVec *v, const void *data, size_t idx) |
| 1181 | { |
| 1182 | if (idx == v->len) |
| 1183 | bc_vec_push(v, data); |
| 1184 | else { |
| 1185 | |
| 1186 | char *ptr; |
| 1187 | |
| 1188 | if (v->len == v->cap) bc_vec_grow(v, 1); |
| 1189 | |
| 1190 | ptr = v->v + v->size * idx; |
| 1191 | |
| 1192 | memmove(ptr + v->size, ptr, v->size * (v->len++ - idx)); |
| 1193 | memmove(ptr, data, v->size); |
| 1194 | } |
| 1195 | } |
| 1196 | |
| 1197 | static void bc_vec_string(BcVec *v, size_t len, const char *str) |
| 1198 | { |
Denys Vlasenko | 7d62801 | 2018-12-04 21:46:47 +0100 | [diff] [blame] | 1199 | bc_vec_pop_all(v); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1200 | bc_vec_expand(v, len + 1); |
| 1201 | memcpy(v->v, str, len); |
| 1202 | v->len = len; |
| 1203 | |
Denys Vlasenko | 08c033c | 2018-12-05 16:55:08 +0100 | [diff] [blame] | 1204 | bc_vec_pushZeroByte(v); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1205 | } |
| 1206 | |
Denys Vlasenko | 82ea67f | 2018-12-13 19:23:45 +0100 | [diff] [blame] | 1207 | #if ENABLE_FEATURE_BC_SIGNALS && ENABLE_FEATURE_EDITING |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1208 | static void bc_vec_concat(BcVec *v, const char *str) |
| 1209 | { |
Denys Vlasenko | 8b4cf0d | 2018-12-10 15:12:58 +0100 | [diff] [blame] | 1210 | size_t len, slen; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1211 | |
Denys Vlasenko | 08c033c | 2018-12-05 16:55:08 +0100 | [diff] [blame] | 1212 | if (v->len == 0) bc_vec_pushZeroByte(v); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1213 | |
Denys Vlasenko | 8b4cf0d | 2018-12-10 15:12:58 +0100 | [diff] [blame] | 1214 | slen = strlen(str); |
| 1215 | len = v->len + slen; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1216 | |
Denys Vlasenko | 8b4cf0d | 2018-12-10 15:12:58 +0100 | [diff] [blame] | 1217 | if (v->cap < len) bc_vec_grow(v, slen); |
Denys Vlasenko | 1ff8862 | 2018-12-06 12:06:16 +0100 | [diff] [blame] | 1218 | strcpy(v->v + v->len - 1, str); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1219 | |
| 1220 | v->len = len; |
| 1221 | } |
Denys Vlasenko | 82ea67f | 2018-12-13 19:23:45 +0100 | [diff] [blame] | 1222 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1223 | |
| 1224 | static void *bc_vec_item(const BcVec *v, size_t idx) |
| 1225 | { |
| 1226 | return v->v + v->size * idx; |
| 1227 | } |
| 1228 | |
Denys Vlasenko | 8fa1e8e | 2018-12-09 00:03:57 +0100 | [diff] [blame] | 1229 | static char** bc_program_str(size_t idx) |
| 1230 | { |
| 1231 | return bc_vec_item(&G.prog.strs, idx); |
| 1232 | } |
| 1233 | |
| 1234 | static BcFunc* bc_program_func(size_t idx) |
| 1235 | { |
| 1236 | return bc_vec_item(&G.prog.fns, idx); |
| 1237 | } |
| 1238 | |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1239 | static void *bc_vec_item_rev(const BcVec *v, size_t idx) |
| 1240 | { |
| 1241 | return v->v + v->size * (v->len - idx - 1); |
| 1242 | } |
| 1243 | |
Denys Vlasenko | b23ac51 | 2018-12-06 13:10:56 +0100 | [diff] [blame] | 1244 | static void *bc_vec_top(const BcVec *v) |
| 1245 | { |
| 1246 | return v->v + v->size * (v->len - 1); |
| 1247 | } |
| 1248 | |
Denys Vlasenko | 5ba55f1 | 2018-12-10 15:37:14 +0100 | [diff] [blame] | 1249 | static FAST_FUNC void bc_vec_free(void *vec) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1250 | { |
| 1251 | BcVec *v = (BcVec *) vec; |
Denys Vlasenko | 7d62801 | 2018-12-04 21:46:47 +0100 | [diff] [blame] | 1252 | bc_vec_pop_all(v); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1253 | free(v->v); |
| 1254 | } |
| 1255 | |
Denys Vlasenko | cca79a0 | 2018-12-05 21:15:46 +0100 | [diff] [blame] | 1256 | static int bc_id_cmp(const void *e1, const void *e2) |
| 1257 | { |
| 1258 | return strcmp(((const BcId *) e1)->name, ((const BcId *) e2)->name); |
| 1259 | } |
| 1260 | |
Denys Vlasenko | 5ba55f1 | 2018-12-10 15:37:14 +0100 | [diff] [blame] | 1261 | static FAST_FUNC void bc_id_free(void *id) |
Denys Vlasenko | cca79a0 | 2018-12-05 21:15:46 +0100 | [diff] [blame] | 1262 | { |
| 1263 | free(((BcId *) id)->name); |
| 1264 | } |
| 1265 | |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1266 | static size_t bc_map_find(const BcVec *v, const void *ptr) |
| 1267 | { |
| 1268 | size_t low = 0, high = v->len; |
| 1269 | |
| 1270 | while (low < high) { |
| 1271 | |
| 1272 | size_t mid = (low + high) / 2; |
| 1273 | BcId *id = bc_vec_item(v, mid); |
| 1274 | int result = bc_id_cmp(ptr, id); |
| 1275 | |
| 1276 | if (result == 0) |
| 1277 | return mid; |
| 1278 | else if (result < 0) |
| 1279 | high = mid; |
| 1280 | else |
| 1281 | low = mid + 1; |
| 1282 | } |
| 1283 | |
| 1284 | return low; |
| 1285 | } |
| 1286 | |
Denys Vlasenko | a02f844 | 2018-12-03 20:35:16 +0100 | [diff] [blame] | 1287 | static int bc_map_insert(BcVec *v, const void *ptr, size_t *i) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1288 | { |
Denys Vlasenko | a02f844 | 2018-12-03 20:35:16 +0100 | [diff] [blame] | 1289 | size_t n = *i = bc_map_find(v, ptr); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1290 | |
Denys Vlasenko | a02f844 | 2018-12-03 20:35:16 +0100 | [diff] [blame] | 1291 | if (n == v->len) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1292 | bc_vec_push(v, ptr); |
Denys Vlasenko | a02f844 | 2018-12-03 20:35:16 +0100 | [diff] [blame] | 1293 | else if (!bc_id_cmp(ptr, bc_vec_item(v, n))) |
| 1294 | return 0; // "was not inserted" |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1295 | else |
Denys Vlasenko | a02f844 | 2018-12-03 20:35:16 +0100 | [diff] [blame] | 1296 | bc_vec_pushAt(v, ptr, n); |
| 1297 | return 1; // "was inserted" |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1298 | } |
| 1299 | |
Denys Vlasenko | 23c2e9f | 2018-12-06 11:43:17 +0100 | [diff] [blame] | 1300 | #if ENABLE_BC |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1301 | static size_t bc_map_index(const BcVec *v, const void *ptr) |
| 1302 | { |
| 1303 | size_t i = bc_map_find(v, ptr); |
| 1304 | if (i >= v->len) return BC_VEC_INVALID_IDX; |
| 1305 | return bc_id_cmp(ptr, bc_vec_item(v, i)) ? BC_VEC_INVALID_IDX : i; |
| 1306 | } |
Denys Vlasenko | 23c2e9f | 2018-12-06 11:43:17 +0100 | [diff] [blame] | 1307 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1308 | |
Denys Vlasenko | 82ea67f | 2018-12-13 19:23:45 +0100 | [diff] [blame] | 1309 | static int bad_input_byte(char c) |
Denys Vlasenko | 95f93bd | 2018-12-06 10:29:12 +0100 | [diff] [blame] | 1310 | { |
| 1311 | if ((c < ' ' && c != '\t' && c != '\r' && c != '\n') // also allow '\v' '\f'? |
| 1312 | || c > 0x7e |
| 1313 | ) { |
Denys Vlasenko | 95f93bd | 2018-12-06 10:29:12 +0100 | [diff] [blame] | 1314 | bc_error_fmt("illegal character 0x%02x", c); |
| 1315 | return 1; |
| 1316 | } |
Denys Vlasenko | 95f93bd | 2018-12-06 10:29:12 +0100 | [diff] [blame] | 1317 | return 0; |
| 1318 | } |
| 1319 | |
Denys Vlasenko | 82ea67f | 2018-12-13 19:23:45 +0100 | [diff] [blame] | 1320 | // Note: it _appends_ data from the stdin to vec. |
Denys Vlasenko | 8a89247 | 2018-12-12 22:43:58 +0100 | [diff] [blame] | 1321 | static void bc_read_line(BcVec *vec) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1322 | { |
Denys Vlasenko | 82ea67f | 2018-12-13 19:23:45 +0100 | [diff] [blame] | 1323 | again: |
Denys Vlasenko | 915c72b | 2018-12-13 19:28:41 +0100 | [diff] [blame] | 1324 | fflush_and_check(); |
Denys Vlasenko | 95f93bd | 2018-12-06 10:29:12 +0100 | [diff] [blame] | 1325 | |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1326 | #if ENABLE_FEATURE_BC_SIGNALS |
Denys Vlasenko | 915c72b | 2018-12-13 19:28:41 +0100 | [diff] [blame] | 1327 | if (G_interrupt) { // ^C was pressed |
Denys Vlasenko | c1c2470 | 2018-12-03 16:06:02 +0100 | [diff] [blame] | 1328 | intr: |
Denys Vlasenko | 915c72b | 2018-12-13 19:28:41 +0100 | [diff] [blame] | 1329 | G_interrupt = 0; |
| 1330 | // GNU bc says "interrupted execution." |
| 1331 | // GNU dc says "Interrupt!" |
| 1332 | fputs("\ninterrupted execution\n", stderr); |
| 1333 | } |
Denys Vlasenko | 82ea67f | 2018-12-13 19:23:45 +0100 | [diff] [blame] | 1334 | |
Denys Vlasenko | 95f93bd | 2018-12-06 10:29:12 +0100 | [diff] [blame] | 1335 | # if ENABLE_FEATURE_EDITING |
Denys Vlasenko | 915c72b | 2018-12-13 19:28:41 +0100 | [diff] [blame] | 1336 | if (G_ttyin) { |
| 1337 | int n, i; |
Denys Vlasenko | 95f93bd | 2018-12-06 10:29:12 +0100 | [diff] [blame] | 1338 | # define line_buf bb_common_bufsiz1 |
Denys Vlasenko | 915c72b | 2018-12-13 19:28:41 +0100 | [diff] [blame] | 1339 | n = read_line_input(G.line_input_state, "", line_buf, COMMON_BUFSIZE); |
| 1340 | if (n <= 0) { // read errors or EOF, or ^D, or ^C |
| 1341 | if (n == 0) // ^C |
| 1342 | goto intr; |
Denys Vlasenko | e755e30 | 2018-12-13 22:25:28 +0100 | [diff] [blame] | 1343 | bc_vec_pushZeroByte(vec); |
| 1344 | return; |
Denys Vlasenko | 915c72b | 2018-12-13 19:28:41 +0100 | [diff] [blame] | 1345 | } |
| 1346 | i = 0; |
| 1347 | for (;;) { |
| 1348 | char c = line_buf[i++]; |
| 1349 | if (!c) break; |
| 1350 | if (bad_input_byte(c)) goto again; |
| 1351 | } |
| 1352 | bc_vec_concat(vec, line_buf); |
Denys Vlasenko | 95f93bd | 2018-12-06 10:29:12 +0100 | [diff] [blame] | 1353 | # undef line_buf |
Denys Vlasenko | 915c72b | 2018-12-13 19:28:41 +0100 | [diff] [blame] | 1354 | } else |
Denys Vlasenko | 95f93bd | 2018-12-06 10:29:12 +0100 | [diff] [blame] | 1355 | # endif |
Denys Vlasenko | c1c2470 | 2018-12-03 16:06:02 +0100 | [diff] [blame] | 1356 | #endif |
Denys Vlasenko | 915c72b | 2018-12-13 19:28:41 +0100 | [diff] [blame] | 1357 | { |
| 1358 | int c; |
| 1359 | bool bad_chars = 0; |
| 1360 | size_t len = vec->len; |
Denys Vlasenko | 82ea67f | 2018-12-13 19:23:45 +0100 | [diff] [blame] | 1361 | |
Denys Vlasenko | 915c72b | 2018-12-13 19:28:41 +0100 | [diff] [blame] | 1362 | IF_FEATURE_BC_SIGNALS(errno = 0;) |
| 1363 | do { |
| 1364 | c = fgetc(stdin); |
Denys Vlasenko | 95f93bd | 2018-12-06 10:29:12 +0100 | [diff] [blame] | 1365 | #if ENABLE_FEATURE_BC_SIGNALS && !ENABLE_FEATURE_EDITING |
Denys Vlasenko | 915c72b | 2018-12-13 19:28:41 +0100 | [diff] [blame] | 1366 | // Both conditions appear simultaneously, check both just in case |
| 1367 | if (errno == EINTR || G_interrupt) { |
| 1368 | // ^C was pressed |
| 1369 | clearerr(stdin); |
| 1370 | goto intr; |
Denys Vlasenko | 82ea67f | 2018-12-13 19:23:45 +0100 | [diff] [blame] | 1371 | } |
Denys Vlasenko | 915c72b | 2018-12-13 19:28:41 +0100 | [diff] [blame] | 1372 | #endif |
| 1373 | if (c == EOF) { |
| 1374 | if (ferror(stdin)) |
| 1375 | quit(); // this emits error message |
| 1376 | // Note: EOF does not append '\n', therefore: |
| 1377 | // printf 'print 123\n' | bc - works |
| 1378 | // printf 'print 123' | bc - fails (syntax error) |
| 1379 | break; |
| 1380 | } |
| 1381 | bad_chars |= bad_input_byte(c); |
| 1382 | bc_vec_pushByte(vec, (char)c); |
| 1383 | } while (c != '\n'); |
| 1384 | if (bad_chars) { |
| 1385 | // Bad chars on this line, ignore entire line |
| 1386 | vec->len = len; |
| 1387 | goto again; |
Denys Vlasenko | ed84935 | 2018-12-06 10:26:13 +0100 | [diff] [blame] | 1388 | } |
Denys Vlasenko | 915c72b | 2018-12-13 19:28:41 +0100 | [diff] [blame] | 1389 | bc_vec_pushZeroByte(vec); |
| 1390 | } |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1391 | } |
| 1392 | |
Denys Vlasenko | df51539 | 2018-12-02 19:27:48 +0100 | [diff] [blame] | 1393 | static char* bc_read_file(const char *path) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1394 | { |
Denys Vlasenko | df51539 | 2018-12-02 19:27:48 +0100 | [diff] [blame] | 1395 | char *buf; |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 1396 | size_t size = ((size_t) -1); |
| 1397 | size_t i; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1398 | |
Denys Vlasenko | 4c9455f | 2018-12-06 15:21:39 +0100 | [diff] [blame] | 1399 | // Never returns NULL (dies on errors) |
| 1400 | buf = xmalloc_xopen_read_close(path, &size); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1401 | |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 1402 | for (i = 0; i < size; ++i) { |
Denys Vlasenko | c1c2470 | 2018-12-03 16:06:02 +0100 | [diff] [blame] | 1403 | char c = buf[i]; |
| 1404 | if ((c < ' ' && c != '\t' && c != '\r' && c != '\n') // also allow '\v' '\f'? |
| 1405 | || c > 0x7e |
| 1406 | ) { |
Denys Vlasenko | df51539 | 2018-12-02 19:27:48 +0100 | [diff] [blame] | 1407 | free(buf); |
| 1408 | buf = NULL; |
| 1409 | break; |
| 1410 | } |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1411 | } |
| 1412 | |
Denys Vlasenko | df51539 | 2018-12-02 19:27:48 +0100 | [diff] [blame] | 1413 | return buf; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1414 | } |
| 1415 | |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1416 | static void bc_num_setToZero(BcNum *n, size_t scale) |
| 1417 | { |
| 1418 | n->len = 0; |
| 1419 | n->neg = false; |
| 1420 | n->rdx = scale; |
| 1421 | } |
| 1422 | |
| 1423 | static void bc_num_zero(BcNum *n) |
| 1424 | { |
| 1425 | bc_num_setToZero(n, 0); |
| 1426 | } |
| 1427 | |
| 1428 | static void bc_num_one(BcNum *n) |
| 1429 | { |
| 1430 | bc_num_setToZero(n, 0); |
| 1431 | n->len = 1; |
| 1432 | n->num[0] = 1; |
| 1433 | } |
| 1434 | |
| 1435 | static void bc_num_ten(BcNum *n) |
| 1436 | { |
| 1437 | bc_num_setToZero(n, 0); |
| 1438 | n->len = 2; |
| 1439 | n->num[0] = 0; |
| 1440 | n->num[1] = 1; |
| 1441 | } |
| 1442 | |
Denys Vlasenko | 3129f70 | 2018-12-09 12:04:44 +0100 | [diff] [blame] | 1443 | // Note: this also sets BcNum to zero |
Denys Vlasenko | b0e3761 | 2018-12-05 21:03:16 +0100 | [diff] [blame] | 1444 | static void bc_num_init(BcNum *n, size_t req) |
| 1445 | { |
| 1446 | req = req >= BC_NUM_DEF_SIZE ? req : BC_NUM_DEF_SIZE; |
Denys Vlasenko | 3129f70 | 2018-12-09 12:04:44 +0100 | [diff] [blame] | 1447 | //memset(n, 0, sizeof(BcNum)); - cleared by assignments below |
Denys Vlasenko | b0e3761 | 2018-12-05 21:03:16 +0100 | [diff] [blame] | 1448 | n->num = xmalloc(req); |
| 1449 | n->cap = req; |
Denys Vlasenko | 3129f70 | 2018-12-09 12:04:44 +0100 | [diff] [blame] | 1450 | n->rdx = 0; |
| 1451 | n->len = 0; |
| 1452 | n->neg = false; |
Denys Vlasenko | b0e3761 | 2018-12-05 21:03:16 +0100 | [diff] [blame] | 1453 | } |
| 1454 | |
Denys Vlasenko | e20e00d | 2018-12-09 11:44:20 +0100 | [diff] [blame] | 1455 | static void bc_num_init_DEF_SIZE(BcNum *n) |
| 1456 | { |
| 1457 | bc_num_init(n, BC_NUM_DEF_SIZE); |
| 1458 | } |
| 1459 | |
Denys Vlasenko | b0e3761 | 2018-12-05 21:03:16 +0100 | [diff] [blame] | 1460 | static void bc_num_expand(BcNum *n, size_t req) |
| 1461 | { |
| 1462 | req = req >= BC_NUM_DEF_SIZE ? req : BC_NUM_DEF_SIZE; |
| 1463 | if (req > n->cap) { |
| 1464 | n->num = xrealloc(n->num, req); |
| 1465 | n->cap = req; |
| 1466 | } |
| 1467 | } |
| 1468 | |
Denys Vlasenko | 5ba55f1 | 2018-12-10 15:37:14 +0100 | [diff] [blame] | 1469 | static FAST_FUNC void bc_num_free(void *num) |
Denys Vlasenko | b0e3761 | 2018-12-05 21:03:16 +0100 | [diff] [blame] | 1470 | { |
| 1471 | free(((BcNum *) num)->num); |
| 1472 | } |
| 1473 | |
| 1474 | static void bc_num_copy(BcNum *d, BcNum *s) |
| 1475 | { |
| 1476 | if (d != s) { |
| 1477 | bc_num_expand(d, s->cap); |
| 1478 | d->len = s->len; |
| 1479 | d->neg = s->neg; |
| 1480 | d->rdx = s->rdx; |
| 1481 | memcpy(d->num, s->num, sizeof(BcDig) * d->len); |
| 1482 | } |
| 1483 | } |
| 1484 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 1485 | static BC_STATUS zbc_num_ulong(BcNum *n, unsigned long *result_p) |
Denys Vlasenko | b0e3761 | 2018-12-05 21:03:16 +0100 | [diff] [blame] | 1486 | { |
| 1487 | size_t i; |
Denys Vlasenko | ffdcebd | 2018-12-07 15:10:05 +0100 | [diff] [blame] | 1488 | unsigned long pow, result; |
Denys Vlasenko | b0e3761 | 2018-12-05 21:03:16 +0100 | [diff] [blame] | 1489 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 1490 | if (n->neg) RETURN_STATUS(bc_error("negative number")); |
Denys Vlasenko | b0e3761 | 2018-12-05 21:03:16 +0100 | [diff] [blame] | 1491 | |
Denys Vlasenko | ffdcebd | 2018-12-07 15:10:05 +0100 | [diff] [blame] | 1492 | for (result = 0, pow = 1, i = n->rdx; i < n->len; ++i) { |
Denys Vlasenko | b0e3761 | 2018-12-05 21:03:16 +0100 | [diff] [blame] | 1493 | |
Denys Vlasenko | ffdcebd | 2018-12-07 15:10:05 +0100 | [diff] [blame] | 1494 | unsigned long prev = result, powprev = pow; |
Denys Vlasenko | b0e3761 | 2018-12-05 21:03:16 +0100 | [diff] [blame] | 1495 | |
Denys Vlasenko | ffdcebd | 2018-12-07 15:10:05 +0100 | [diff] [blame] | 1496 | result += ((unsigned long) n->num[i]) * pow; |
Denys Vlasenko | b0e3761 | 2018-12-05 21:03:16 +0100 | [diff] [blame] | 1497 | pow *= 10; |
| 1498 | |
Denys Vlasenko | ffdcebd | 2018-12-07 15:10:05 +0100 | [diff] [blame] | 1499 | if (result < prev || pow < powprev) |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 1500 | RETURN_STATUS(bc_error("overflow")); |
Denys Vlasenko | ffdcebd | 2018-12-07 15:10:05 +0100 | [diff] [blame] | 1501 | prev = result; |
| 1502 | powprev = pow; |
Denys Vlasenko | b0e3761 | 2018-12-05 21:03:16 +0100 | [diff] [blame] | 1503 | } |
Denys Vlasenko | ffdcebd | 2018-12-07 15:10:05 +0100 | [diff] [blame] | 1504 | *result_p = result; |
Denys Vlasenko | b0e3761 | 2018-12-05 21:03:16 +0100 | [diff] [blame] | 1505 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 1506 | RETURN_STATUS(BC_STATUS_SUCCESS); |
Denys Vlasenko | b0e3761 | 2018-12-05 21:03:16 +0100 | [diff] [blame] | 1507 | } |
Denys Vlasenko | fa35e59 | 2018-12-10 20:17:24 +0100 | [diff] [blame] | 1508 | #if ERRORS_ARE_FATAL |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 1509 | # define zbc_num_ulong(...) (zbc_num_ulong(__VA_ARGS__), BC_STATUS_SUCCESS) |
Denys Vlasenko | fa35e59 | 2018-12-10 20:17:24 +0100 | [diff] [blame] | 1510 | #endif |
Denys Vlasenko | b0e3761 | 2018-12-05 21:03:16 +0100 | [diff] [blame] | 1511 | |
| 1512 | static void bc_num_ulong2num(BcNum *n, unsigned long val) |
| 1513 | { |
Denys Vlasenko | b0e3761 | 2018-12-05 21:03:16 +0100 | [diff] [blame] | 1514 | BcDig *ptr; |
Denys Vlasenko | b0e3761 | 2018-12-05 21:03:16 +0100 | [diff] [blame] | 1515 | |
| 1516 | bc_num_zero(n); |
| 1517 | |
| 1518 | if (val == 0) return; |
| 1519 | |
Denys Vlasenko | b696d9e | 2018-12-10 12:22:15 +0100 | [diff] [blame] | 1520 | if (ULONG_MAX == 0xffffffffUL) |
| 1521 | bc_num_expand(n, 10); // 10 digits: 4294967295 |
Denys Vlasenko | c665c18 | 2018-12-10 15:15:42 +0100 | [diff] [blame] | 1522 | if (ULONG_MAX == 0xffffffffffffffffULL) |
Denys Vlasenko | b696d9e | 2018-12-10 12:22:15 +0100 | [diff] [blame] | 1523 | bc_num_expand(n, 20); // 20 digits: 18446744073709551615 |
Denys Vlasenko | c665c18 | 2018-12-10 15:15:42 +0100 | [diff] [blame] | 1524 | BUILD_BUG_ON(ULONG_MAX > 0xffffffffffffffffULL); |
Denys Vlasenko | b696d9e | 2018-12-10 12:22:15 +0100 | [diff] [blame] | 1525 | |
| 1526 | ptr = n->num; |
| 1527 | for (;;) { |
| 1528 | n->len++; |
| 1529 | *ptr++ = val % 10; |
| 1530 | val /= 10; |
| 1531 | if (val == 0) break; |
| 1532 | } |
Denys Vlasenko | b0e3761 | 2018-12-05 21:03:16 +0100 | [diff] [blame] | 1533 | } |
| 1534 | |
Denys Vlasenko | 71e1fc6 | 2018-12-02 19:43:34 +0100 | [diff] [blame] | 1535 | static void bc_num_subArrays(BcDig *restrict a, BcDig *restrict b, |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1536 | size_t len) |
| 1537 | { |
| 1538 | size_t i, j; |
Denys Vlasenko | 71e1fc6 | 2018-12-02 19:43:34 +0100 | [diff] [blame] | 1539 | for (i = 0; i < len; ++i) { |
| 1540 | for (a[i] -= b[i], j = 0; a[i + j] < 0;) { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1541 | a[i + j++] += 10; |
| 1542 | a[i + j] -= 1; |
| 1543 | } |
| 1544 | } |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1545 | } |
| 1546 | |
| 1547 | static ssize_t bc_num_compare(BcDig *restrict a, BcDig *restrict b, size_t len) |
| 1548 | { |
| 1549 | size_t i; |
| 1550 | int c = 0; |
Denys Vlasenko | 71e1fc6 | 2018-12-02 19:43:34 +0100 | [diff] [blame] | 1551 | for (i = len - 1; i < len && !(c = a[i] - b[i]); --i); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1552 | return BC_NUM_NEG(i + 1, c < 0); |
| 1553 | } |
| 1554 | |
| 1555 | static ssize_t bc_num_cmp(BcNum *a, BcNum *b) |
| 1556 | { |
| 1557 | size_t i, min, a_int, b_int, diff; |
| 1558 | BcDig *max_num, *min_num; |
Denys Vlasenko | 251fbb5 | 2018-12-12 11:51:32 +0100 | [diff] [blame] | 1559 | bool a_max, neg; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1560 | ssize_t cmp; |
| 1561 | |
| 1562 | if (a == b) return 0; |
| 1563 | if (a->len == 0) return BC_NUM_NEG(!!b->len, !b->neg); |
| 1564 | if (b->len == 0) return BC_NUM_NEG(1, a->neg); |
Denys Vlasenko | 251fbb5 | 2018-12-12 11:51:32 +0100 | [diff] [blame] | 1565 | |
| 1566 | if (a->neg != b->neg) // signs of a and b differ |
| 1567 | // +a,-b = a>b = 1 or -a,+b = a<b = -1 |
| 1568 | return (int)b->neg - (int)a->neg; |
| 1569 | neg = a->neg; // 1 if both negative, 0 if both positive |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1570 | |
| 1571 | a_int = BC_NUM_INT(a); |
| 1572 | b_int = BC_NUM_INT(b); |
| 1573 | a_int -= b_int; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1574 | |
| 1575 | if (a_int != 0) return (ssize_t) a_int; |
| 1576 | |
Denys Vlasenko | 251fbb5 | 2018-12-12 11:51:32 +0100 | [diff] [blame] | 1577 | a_max = (a->rdx > b->rdx); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1578 | if (a_max) { |
| 1579 | min = b->rdx; |
| 1580 | diff = a->rdx - b->rdx; |
| 1581 | max_num = a->num + diff; |
| 1582 | min_num = b->num; |
Denys Vlasenko | 251fbb5 | 2018-12-12 11:51:32 +0100 | [diff] [blame] | 1583 | // neg = (a_max == neg); - NOP (maps 1->1 and 0->0) |
| 1584 | } else { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1585 | min = a->rdx; |
| 1586 | diff = b->rdx - a->rdx; |
| 1587 | max_num = b->num + diff; |
| 1588 | min_num = a->num; |
Denys Vlasenko | 251fbb5 | 2018-12-12 11:51:32 +0100 | [diff] [blame] | 1589 | neg = !neg; // same as "neg = (a_max == neg)" |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1590 | } |
| 1591 | |
| 1592 | cmp = bc_num_compare(max_num, min_num, b_int + min); |
Denys Vlasenko | 251fbb5 | 2018-12-12 11:51:32 +0100 | [diff] [blame] | 1593 | if (cmp != 0) return BC_NUM_NEG(cmp, neg); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1594 | |
Denys Vlasenko | 71e1fc6 | 2018-12-02 19:43:34 +0100 | [diff] [blame] | 1595 | for (max_num -= diff, i = diff - 1; i < diff; --i) { |
Denys Vlasenko | 251fbb5 | 2018-12-12 11:51:32 +0100 | [diff] [blame] | 1596 | if (max_num[i]) return BC_NUM_NEG(1, neg); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1597 | } |
| 1598 | |
| 1599 | return 0; |
| 1600 | } |
| 1601 | |
| 1602 | static void bc_num_truncate(BcNum *n, size_t places) |
| 1603 | { |
| 1604 | if (places == 0) return; |
| 1605 | |
| 1606 | n->rdx -= places; |
| 1607 | |
| 1608 | if (n->len != 0) { |
| 1609 | n->len -= places; |
| 1610 | memmove(n->num, n->num + places, n->len * sizeof(BcDig)); |
| 1611 | } |
| 1612 | } |
| 1613 | |
| 1614 | static void bc_num_extend(BcNum *n, size_t places) |
| 1615 | { |
| 1616 | size_t len = n->len + places; |
| 1617 | |
| 1618 | if (places != 0) { |
| 1619 | |
| 1620 | if (n->cap < len) bc_num_expand(n, len); |
| 1621 | |
| 1622 | memmove(n->num + places, n->num, sizeof(BcDig) * n->len); |
| 1623 | memset(n->num, 0, sizeof(BcDig) * places); |
| 1624 | |
| 1625 | n->len += places; |
| 1626 | n->rdx += places; |
| 1627 | } |
| 1628 | } |
| 1629 | |
| 1630 | static void bc_num_clean(BcNum *n) |
| 1631 | { |
| 1632 | while (n->len > 0 && n->num[n->len - 1] == 0) --n->len; |
| 1633 | if (n->len == 0) |
| 1634 | n->neg = false; |
| 1635 | else if (n->len < n->rdx) |
| 1636 | n->len = n->rdx; |
| 1637 | } |
| 1638 | |
| 1639 | static void bc_num_retireMul(BcNum *n, size_t scale, bool neg1, bool neg2) |
| 1640 | { |
| 1641 | if (n->rdx < scale) |
| 1642 | bc_num_extend(n, scale - n->rdx); |
| 1643 | else |
| 1644 | bc_num_truncate(n, n->rdx - scale); |
| 1645 | |
| 1646 | bc_num_clean(n); |
| 1647 | if (n->len != 0) n->neg = !neg1 != !neg2; |
| 1648 | } |
| 1649 | |
| 1650 | static void bc_num_split(BcNum *restrict n, size_t idx, BcNum *restrict a, |
| 1651 | BcNum *restrict b) |
| 1652 | { |
| 1653 | if (idx < n->len) { |
| 1654 | |
| 1655 | b->len = n->len - idx; |
| 1656 | a->len = idx; |
| 1657 | a->rdx = b->rdx = 0; |
| 1658 | |
| 1659 | memcpy(b->num, n->num + idx, b->len * sizeof(BcDig)); |
| 1660 | memcpy(a->num, n->num, idx * sizeof(BcDig)); |
| 1661 | } |
| 1662 | else { |
| 1663 | bc_num_zero(b); |
| 1664 | bc_num_copy(a, n); |
| 1665 | } |
| 1666 | |
| 1667 | bc_num_clean(a); |
| 1668 | bc_num_clean(b); |
| 1669 | } |
| 1670 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 1671 | static BC_STATUS zbc_num_shift(BcNum *n, size_t places) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1672 | { |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 1673 | if (places == 0 || n->len == 0) RETURN_STATUS(BC_STATUS_SUCCESS); |
Denys Vlasenko | 64074a1 | 2018-12-07 15:50:14 +0100 | [diff] [blame] | 1674 | |
| 1675 | // This check makes sense only if size_t is (much) larger than BC_MAX_NUM. |
| 1676 | if (SIZE_MAX > (BC_MAX_NUM | 0xff)) { |
| 1677 | if (places + n->len > BC_MAX_NUM) |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 1678 | RETURN_STATUS(bc_error("number too long: must be [1,"BC_MAX_NUM_STR"]")); |
Denys Vlasenko | 64074a1 | 2018-12-07 15:50:14 +0100 | [diff] [blame] | 1679 | } |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1680 | |
| 1681 | if (n->rdx >= places) |
| 1682 | n->rdx -= places; |
| 1683 | else { |
| 1684 | bc_num_extend(n, places - n->rdx); |
| 1685 | n->rdx = 0; |
| 1686 | } |
| 1687 | |
| 1688 | bc_num_clean(n); |
| 1689 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 1690 | RETURN_STATUS(BC_STATUS_SUCCESS); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1691 | } |
Denys Vlasenko | fa35e59 | 2018-12-10 20:17:24 +0100 | [diff] [blame] | 1692 | #if ERRORS_ARE_FATAL |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 1693 | # define zbc_num_shift(...) (zbc_num_shift(__VA_ARGS__), BC_STATUS_SUCCESS) |
Denys Vlasenko | fa35e59 | 2018-12-10 20:17:24 +0100 | [diff] [blame] | 1694 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1695 | |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 1696 | static BC_STATUS zbc_num_inv(BcNum *a, BcNum *b, size_t scale) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1697 | { |
| 1698 | BcNum one; |
| 1699 | BcDig num[2]; |
| 1700 | |
| 1701 | one.cap = 2; |
| 1702 | one.num = num; |
| 1703 | bc_num_one(&one); |
| 1704 | |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 1705 | RETURN_STATUS(zbc_num_div(&one, a, b, scale)); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1706 | } |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 1707 | #if ERRORS_ARE_FATAL |
| 1708 | # define zbc_num_inv(...) (zbc_num_inv(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 1709 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1710 | |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 1711 | static FAST_FUNC BC_STATUS zbc_num_a(BcNum *a, BcNum *b, BcNum *restrict c, size_t sub) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1712 | { |
| 1713 | BcDig *ptr, *ptr_a, *ptr_b, *ptr_c; |
| 1714 | size_t i, max, min_rdx, min_int, diff, a_int, b_int; |
| 1715 | int carry, in; |
| 1716 | |
| 1717 | // Because this function doesn't need to use scale (per the bc spec), |
| 1718 | // I am hijacking it to say whether it's doing an add or a subtract. |
| 1719 | |
| 1720 | if (a->len == 0) { |
| 1721 | bc_num_copy(c, b); |
| 1722 | if (sub && c->len) c->neg = !c->neg; |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 1723 | RETURN_STATUS(BC_STATUS_SUCCESS); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1724 | } |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 1725 | if (b->len == 0) { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1726 | bc_num_copy(c, a); |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 1727 | RETURN_STATUS(BC_STATUS_SUCCESS); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1728 | } |
| 1729 | |
| 1730 | c->neg = a->neg; |
| 1731 | c->rdx = BC_MAX(a->rdx, b->rdx); |
| 1732 | min_rdx = BC_MIN(a->rdx, b->rdx); |
| 1733 | c->len = 0; |
| 1734 | |
| 1735 | if (a->rdx > b->rdx) { |
| 1736 | diff = a->rdx - b->rdx; |
| 1737 | ptr = a->num; |
| 1738 | ptr_a = a->num + diff; |
| 1739 | ptr_b = b->num; |
| 1740 | } |
| 1741 | else { |
| 1742 | diff = b->rdx - a->rdx; |
| 1743 | ptr = b->num; |
| 1744 | ptr_a = a->num; |
| 1745 | ptr_b = b->num + diff; |
| 1746 | } |
| 1747 | |
| 1748 | for (ptr_c = c->num, i = 0; i < diff; ++i, ++c->len) ptr_c[i] = ptr[i]; |
| 1749 | |
| 1750 | ptr_c += diff; |
| 1751 | a_int = BC_NUM_INT(a); |
| 1752 | b_int = BC_NUM_INT(b); |
| 1753 | |
| 1754 | if (a_int > b_int) { |
| 1755 | min_int = b_int; |
| 1756 | max = a_int; |
| 1757 | ptr = ptr_a; |
| 1758 | } |
| 1759 | else { |
| 1760 | min_int = a_int; |
| 1761 | max = b_int; |
| 1762 | ptr = ptr_b; |
| 1763 | } |
| 1764 | |
Denys Vlasenko | 71e1fc6 | 2018-12-02 19:43:34 +0100 | [diff] [blame] | 1765 | for (carry = 0, i = 0; i < min_rdx + min_int; ++i, ++c->len) { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1766 | in = ((int) ptr_a[i]) + ((int) ptr_b[i]) + carry; |
| 1767 | carry = in / 10; |
| 1768 | ptr_c[i] = (BcDig)(in % 10); |
| 1769 | } |
| 1770 | |
Denys Vlasenko | 71e1fc6 | 2018-12-02 19:43:34 +0100 | [diff] [blame] | 1771 | for (; i < max + min_rdx; ++i, ++c->len) { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1772 | in = ((int) ptr[i]) + carry; |
| 1773 | carry = in / 10; |
| 1774 | ptr_c[i] = (BcDig)(in % 10); |
| 1775 | } |
| 1776 | |
| 1777 | if (carry != 0) c->num[c->len++] = (BcDig) carry; |
| 1778 | |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 1779 | RETURN_STATUS(BC_STATUS_SUCCESS); // can't make void, see zbc_num_binary() |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1780 | } |
| 1781 | |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 1782 | static FAST_FUNC BC_STATUS zbc_num_s(BcNum *a, BcNum *b, BcNum *restrict c, size_t sub) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1783 | { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1784 | ssize_t cmp; |
| 1785 | BcNum *minuend, *subtrahend; |
| 1786 | size_t start; |
| 1787 | bool aneg, bneg, neg; |
| 1788 | |
| 1789 | // Because this function doesn't need to use scale (per the bc spec), |
| 1790 | // I am hijacking it to say whether it's doing an add or a subtract. |
| 1791 | |
| 1792 | if (a->len == 0) { |
| 1793 | bc_num_copy(c, b); |
| 1794 | if (sub && c->len) c->neg = !c->neg; |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 1795 | RETURN_STATUS(BC_STATUS_SUCCESS); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1796 | } |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 1797 | if (b->len == 0) { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1798 | bc_num_copy(c, a); |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 1799 | RETURN_STATUS(BC_STATUS_SUCCESS); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1800 | } |
| 1801 | |
| 1802 | aneg = a->neg; |
| 1803 | bneg = b->neg; |
| 1804 | a->neg = b->neg = false; |
| 1805 | |
| 1806 | cmp = bc_num_cmp(a, b); |
| 1807 | |
| 1808 | a->neg = aneg; |
| 1809 | b->neg = bneg; |
| 1810 | |
| 1811 | if (cmp == 0) { |
| 1812 | bc_num_setToZero(c, BC_MAX(a->rdx, b->rdx)); |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 1813 | RETURN_STATUS(BC_STATUS_SUCCESS); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1814 | } |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 1815 | if (cmp > 0) { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1816 | neg = a->neg; |
| 1817 | minuend = a; |
| 1818 | subtrahend = b; |
| 1819 | } |
| 1820 | else { |
| 1821 | neg = b->neg; |
| 1822 | if (sub) neg = !neg; |
| 1823 | minuend = b; |
| 1824 | subtrahend = a; |
| 1825 | } |
| 1826 | |
| 1827 | bc_num_copy(c, minuend); |
| 1828 | c->neg = neg; |
| 1829 | |
| 1830 | if (c->rdx < subtrahend->rdx) { |
| 1831 | bc_num_extend(c, subtrahend->rdx - c->rdx); |
| 1832 | start = 0; |
| 1833 | } |
| 1834 | else |
| 1835 | start = c->rdx - subtrahend->rdx; |
| 1836 | |
Denys Vlasenko | 71e1fc6 | 2018-12-02 19:43:34 +0100 | [diff] [blame] | 1837 | bc_num_subArrays(c->num + start, subtrahend->num, subtrahend->len); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1838 | |
| 1839 | bc_num_clean(c); |
| 1840 | |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 1841 | RETURN_STATUS(BC_STATUS_SUCCESS); // can't make void, see zbc_num_binary() |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1842 | } |
| 1843 | |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 1844 | static FAST_FUNC BC_STATUS zbc_num_k(BcNum *restrict a, BcNum *restrict b, |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1845 | BcNum *restrict c) |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 1846 | #if ERRORS_ARE_FATAL |
| 1847 | # define zbc_num_k(...) (zbc_num_k(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 1848 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1849 | { |
| 1850 | BcStatus s; |
Denys Vlasenko | b692c2f | 2018-12-05 18:56:14 +0100 | [diff] [blame] | 1851 | size_t max = BC_MAX(a->len, b->len), max2 = (max + 1) / 2; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1852 | BcNum l1, h1, l2, h2, m2, m1, z0, z1, z2, temp; |
Denys Vlasenko | b692c2f | 2018-12-05 18:56:14 +0100 | [diff] [blame] | 1853 | bool aone; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1854 | |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1855 | if (a->len == 0 || b->len == 0) { |
| 1856 | bc_num_zero(c); |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 1857 | RETURN_STATUS(BC_STATUS_SUCCESS); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1858 | } |
Denys Vlasenko | b692c2f | 2018-12-05 18:56:14 +0100 | [diff] [blame] | 1859 | aone = BC_NUM_ONE(a); |
| 1860 | if (aone || BC_NUM_ONE(b)) { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1861 | bc_num_copy(c, aone ? b : a); |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 1862 | RETURN_STATUS(BC_STATUS_SUCCESS); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1863 | } |
| 1864 | |
| 1865 | if (a->len + b->len < BC_NUM_KARATSUBA_LEN || |
| 1866 | a->len < BC_NUM_KARATSUBA_LEN || b->len < BC_NUM_KARATSUBA_LEN) |
| 1867 | { |
Denys Vlasenko | b692c2f | 2018-12-05 18:56:14 +0100 | [diff] [blame] | 1868 | size_t i, j, len; |
Denys Vlasenko | b3cb901 | 2018-12-05 19:05:32 +0100 | [diff] [blame] | 1869 | unsigned carry; |
Denys Vlasenko | b692c2f | 2018-12-05 18:56:14 +0100 | [diff] [blame] | 1870 | |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1871 | bc_num_expand(c, a->len + b->len + 1); |
| 1872 | |
| 1873 | memset(c->num, 0, sizeof(BcDig) * c->cap); |
Denys Vlasenko | b692c2f | 2018-12-05 18:56:14 +0100 | [diff] [blame] | 1874 | c->len = len = 0; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1875 | |
Denys Vlasenko | 71e1fc6 | 2018-12-02 19:43:34 +0100 | [diff] [blame] | 1876 | for (i = 0; i < b->len; ++i) { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1877 | |
Denys Vlasenko | b692c2f | 2018-12-05 18:56:14 +0100 | [diff] [blame] | 1878 | carry = 0; |
Denys Vlasenko | 71e1fc6 | 2018-12-02 19:43:34 +0100 | [diff] [blame] | 1879 | for (j = 0; j < a->len; ++j) { |
Denys Vlasenko | b3cb901 | 2018-12-05 19:05:32 +0100 | [diff] [blame] | 1880 | unsigned in = c->num[i + j]; |
| 1881 | in += ((unsigned) a->num[j]) * ((unsigned) b->num[i]) + carry; |
| 1882 | // note: compilers prefer _unsigned_ div/const |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1883 | carry = in / 10; |
| 1884 | c->num[i + j] = (BcDig)(in % 10); |
| 1885 | } |
| 1886 | |
| 1887 | c->num[i + j] += (BcDig) carry; |
| 1888 | len = BC_MAX(len, i + j + !!carry); |
Denys Vlasenko | 06fa65b | 2018-12-05 19:00:58 +0100 | [diff] [blame] | 1889 | |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 1890 | #if ENABLE_FEATURE_BC_SIGNALS |
Denys Vlasenko | 06fa65b | 2018-12-05 19:00:58 +0100 | [diff] [blame] | 1891 | // a=2^1000000 |
| 1892 | // a*a <- without check below, this will not be interruptible |
| 1893 | if (G_interrupt) return BC_STATUS_FAILURE; |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 1894 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1895 | } |
| 1896 | |
| 1897 | c->len = len; |
| 1898 | |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 1899 | RETURN_STATUS(BC_STATUS_SUCCESS); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1900 | } |
| 1901 | |
| 1902 | bc_num_init(&l1, max); |
| 1903 | bc_num_init(&h1, max); |
| 1904 | bc_num_init(&l2, max); |
| 1905 | bc_num_init(&h2, max); |
| 1906 | bc_num_init(&m1, max); |
| 1907 | bc_num_init(&m2, max); |
| 1908 | bc_num_init(&z0, max); |
| 1909 | bc_num_init(&z1, max); |
| 1910 | bc_num_init(&z2, max); |
| 1911 | bc_num_init(&temp, max + max); |
| 1912 | |
| 1913 | bc_num_split(a, max2, &l1, &h1); |
| 1914 | bc_num_split(b, max2, &l2, &h2); |
| 1915 | |
Denys Vlasenko | 1aeacef | 2018-12-11 19:12:13 +0100 | [diff] [blame] | 1916 | s = zbc_num_add(&h1, &l1, &m1, 0); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1917 | if (s) goto err; |
Denys Vlasenko | 1aeacef | 2018-12-11 19:12:13 +0100 | [diff] [blame] | 1918 | s = zbc_num_add(&h2, &l2, &m2, 0); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1919 | if (s) goto err; |
| 1920 | |
Denys Vlasenko | 1aeacef | 2018-12-11 19:12:13 +0100 | [diff] [blame] | 1921 | s = zbc_num_k(&h1, &h2, &z0); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1922 | if (s) goto err; |
Denys Vlasenko | 1aeacef | 2018-12-11 19:12:13 +0100 | [diff] [blame] | 1923 | s = zbc_num_k(&m1, &m2, &z1); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1924 | if (s) goto err; |
Denys Vlasenko | 1aeacef | 2018-12-11 19:12:13 +0100 | [diff] [blame] | 1925 | s = zbc_num_k(&l1, &l2, &z2); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1926 | if (s) goto err; |
| 1927 | |
Denys Vlasenko | 1aeacef | 2018-12-11 19:12:13 +0100 | [diff] [blame] | 1928 | s = zbc_num_sub(&z1, &z0, &temp, 0); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1929 | if (s) goto err; |
Denys Vlasenko | 1aeacef | 2018-12-11 19:12:13 +0100 | [diff] [blame] | 1930 | s = zbc_num_sub(&temp, &z2, &z1, 0); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1931 | if (s) goto err; |
| 1932 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 1933 | s = zbc_num_shift(&z0, max2 * 2); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1934 | if (s) goto err; |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 1935 | s = zbc_num_shift(&z1, max2); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1936 | if (s) goto err; |
Denys Vlasenko | 1aeacef | 2018-12-11 19:12:13 +0100 | [diff] [blame] | 1937 | s = zbc_num_add(&z0, &z1, &temp, 0); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1938 | if (s) goto err; |
Denys Vlasenko | 1aeacef | 2018-12-11 19:12:13 +0100 | [diff] [blame] | 1939 | s = zbc_num_add(&temp, &z2, c, 0); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1940 | |
| 1941 | err: |
| 1942 | bc_num_free(&temp); |
| 1943 | bc_num_free(&z2); |
| 1944 | bc_num_free(&z1); |
| 1945 | bc_num_free(&z0); |
| 1946 | bc_num_free(&m2); |
| 1947 | bc_num_free(&m1); |
| 1948 | bc_num_free(&h2); |
| 1949 | bc_num_free(&l2); |
| 1950 | bc_num_free(&h1); |
| 1951 | bc_num_free(&l1); |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 1952 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1953 | } |
| 1954 | |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 1955 | static FAST_FUNC BC_STATUS zbc_num_m(BcNum *a, BcNum *b, BcNum *restrict c, size_t scale) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1956 | { |
| 1957 | BcStatus s; |
| 1958 | BcNum cpa, cpb; |
| 1959 | size_t maxrdx = BC_MAX(a->rdx, b->rdx); |
| 1960 | |
| 1961 | scale = BC_MAX(scale, a->rdx); |
| 1962 | scale = BC_MAX(scale, b->rdx); |
| 1963 | scale = BC_MIN(a->rdx + b->rdx, scale); |
| 1964 | maxrdx = BC_MAX(maxrdx, scale); |
| 1965 | |
| 1966 | bc_num_init(&cpa, a->len); |
| 1967 | bc_num_init(&cpb, b->len); |
| 1968 | |
| 1969 | bc_num_copy(&cpa, a); |
| 1970 | bc_num_copy(&cpb, b); |
| 1971 | cpa.neg = cpb.neg = false; |
| 1972 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 1973 | s = zbc_num_shift(&cpa, maxrdx); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1974 | if (s) goto err; |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 1975 | s = zbc_num_shift(&cpb, maxrdx); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1976 | if (s) goto err; |
Denys Vlasenko | 1aeacef | 2018-12-11 19:12:13 +0100 | [diff] [blame] | 1977 | s = zbc_num_k(&cpa, &cpb, c); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1978 | if (s) goto err; |
| 1979 | |
| 1980 | maxrdx += scale; |
| 1981 | bc_num_expand(c, c->len + maxrdx); |
| 1982 | |
| 1983 | if (c->len < maxrdx) { |
| 1984 | memset(c->num + c->len, 0, (c->cap - c->len) * sizeof(BcDig)); |
| 1985 | c->len += maxrdx; |
| 1986 | } |
| 1987 | |
| 1988 | c->rdx = maxrdx; |
| 1989 | bc_num_retireMul(c, scale, a->neg, b->neg); |
| 1990 | |
| 1991 | err: |
| 1992 | bc_num_free(&cpb); |
| 1993 | bc_num_free(&cpa); |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 1994 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1995 | } |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 1996 | #if ERRORS_ARE_FATAL |
| 1997 | # define zbc_num_m(...) (zbc_num_m(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 1998 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 1999 | |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2000 | static FAST_FUNC BC_STATUS zbc_num_d(BcNum *a, BcNum *b, BcNum *restrict c, size_t scale) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2001 | { |
| 2002 | BcStatus s = BC_STATUS_SUCCESS; |
| 2003 | BcDig *n, *p, q; |
| 2004 | size_t len, end, i; |
| 2005 | BcNum cp; |
| 2006 | bool zero = true; |
| 2007 | |
| 2008 | if (b->len == 0) |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2009 | RETURN_STATUS(bc_error("divide by zero")); |
| 2010 | if (a->len == 0) { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2011 | bc_num_setToZero(c, scale); |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2012 | RETURN_STATUS(BC_STATUS_SUCCESS); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2013 | } |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2014 | if (BC_NUM_ONE(b)) { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2015 | bc_num_copy(c, a); |
| 2016 | bc_num_retireMul(c, scale, a->neg, b->neg); |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2017 | RETURN_STATUS(BC_STATUS_SUCCESS); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2018 | } |
| 2019 | |
| 2020 | bc_num_init(&cp, BC_NUM_MREQ(a, b, scale)); |
| 2021 | bc_num_copy(&cp, a); |
| 2022 | len = b->len; |
| 2023 | |
| 2024 | if (len > cp.len) { |
| 2025 | bc_num_expand(&cp, len + 2); |
| 2026 | bc_num_extend(&cp, len - cp.len); |
| 2027 | } |
| 2028 | |
| 2029 | if (b->rdx > cp.rdx) bc_num_extend(&cp, b->rdx - cp.rdx); |
| 2030 | cp.rdx -= b->rdx; |
| 2031 | if (scale > cp.rdx) bc_num_extend(&cp, scale - cp.rdx); |
| 2032 | |
| 2033 | if (b->rdx == b->len) { |
| 2034 | for (i = 0; zero && i < len; ++i) zero = !b->num[len - i - 1]; |
| 2035 | len -= i - 1; |
| 2036 | } |
| 2037 | |
| 2038 | if (cp.cap == cp.len) bc_num_expand(&cp, cp.len + 1); |
| 2039 | |
| 2040 | // We want an extra zero in front to make things simpler. |
| 2041 | cp.num[cp.len++] = 0; |
| 2042 | end = cp.len - len; |
| 2043 | |
| 2044 | bc_num_expand(c, cp.len); |
| 2045 | |
| 2046 | bc_num_zero(c); |
| 2047 | memset(c->num + end, 0, (c->cap - end) * sizeof(BcDig)); |
| 2048 | c->rdx = cp.rdx; |
| 2049 | c->len = cp.len; |
| 2050 | p = b->num; |
| 2051 | |
Denys Vlasenko | 71e1fc6 | 2018-12-02 19:43:34 +0100 | [diff] [blame] | 2052 | for (i = end - 1; !s && i < end; --i) { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2053 | n = cp.num + i; |
| 2054 | for (q = 0; (!s && n[len] != 0) || bc_num_compare(n, p, len) >= 0; ++q) |
Denys Vlasenko | 71e1fc6 | 2018-12-02 19:43:34 +0100 | [diff] [blame] | 2055 | bc_num_subArrays(n, p, len); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2056 | c->num[i] = q; |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2057 | #if ENABLE_FEATURE_BC_SIGNALS |
Denys Vlasenko | f381a88 | 2018-12-05 19:21:34 +0100 | [diff] [blame] | 2058 | // a=2^100000 |
| 2059 | // scale=40000 |
| 2060 | // 1/a <- without check below, this will not be interruptible |
| 2061 | if (G_interrupt) { |
| 2062 | s = BC_STATUS_FAILURE; |
| 2063 | break; |
| 2064 | } |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2065 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2066 | } |
| 2067 | |
Denys Vlasenko | 71e1fc6 | 2018-12-02 19:43:34 +0100 | [diff] [blame] | 2068 | bc_num_retireMul(c, scale, a->neg, b->neg); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2069 | bc_num_free(&cp); |
| 2070 | |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2071 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2072 | } |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2073 | #if ERRORS_ARE_FATAL |
| 2074 | # define zbc_num_d(...) (zbc_num_d(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 2075 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2076 | |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2077 | static FAST_FUNC BC_STATUS zbc_num_r(BcNum *a, BcNum *b, BcNum *restrict c, |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2078 | BcNum *restrict d, size_t scale, size_t ts) |
| 2079 | { |
| 2080 | BcStatus s; |
| 2081 | BcNum temp; |
| 2082 | bool neg; |
| 2083 | |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 2084 | if (b->len == 0) |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2085 | RETURN_STATUS(bc_error("divide by zero")); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2086 | |
| 2087 | if (a->len == 0) { |
| 2088 | bc_num_setToZero(d, ts); |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2089 | RETURN_STATUS(BC_STATUS_SUCCESS); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2090 | } |
| 2091 | |
| 2092 | bc_num_init(&temp, d->cap); |
Denys Vlasenko | 1aeacef | 2018-12-11 19:12:13 +0100 | [diff] [blame] | 2093 | s = zbc_num_d(a, b, c, scale); |
Denys Vlasenko | f381a88 | 2018-12-05 19:21:34 +0100 | [diff] [blame] | 2094 | if (s) goto err; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2095 | |
| 2096 | if (scale != 0) scale = ts; |
| 2097 | |
Denys Vlasenko | 1aeacef | 2018-12-11 19:12:13 +0100 | [diff] [blame] | 2098 | s = zbc_num_m(c, b, &temp, scale); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2099 | if (s) goto err; |
Denys Vlasenko | 1aeacef | 2018-12-11 19:12:13 +0100 | [diff] [blame] | 2100 | s = zbc_num_sub(a, &temp, d, scale); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2101 | if (s) goto err; |
| 2102 | |
| 2103 | if (ts > d->rdx && d->len) bc_num_extend(d, ts - d->rdx); |
| 2104 | |
| 2105 | neg = d->neg; |
| 2106 | bc_num_retireMul(d, ts, a->neg, b->neg); |
| 2107 | d->neg = neg; |
| 2108 | |
| 2109 | err: |
| 2110 | bc_num_free(&temp); |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2111 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2112 | } |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2113 | #if ERRORS_ARE_FATAL |
| 2114 | # define zbc_num_r(...) (zbc_num_r(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 2115 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2116 | |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2117 | static FAST_FUNC BC_STATUS zbc_num_rem(BcNum *a, BcNum *b, BcNum *restrict c, size_t scale) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2118 | { |
| 2119 | BcStatus s; |
| 2120 | BcNum c1; |
| 2121 | size_t ts = BC_MAX(scale + b->rdx, a->rdx), len = BC_NUM_MREQ(a, b, ts); |
| 2122 | |
| 2123 | bc_num_init(&c1, len); |
Denys Vlasenko | 1aeacef | 2018-12-11 19:12:13 +0100 | [diff] [blame] | 2124 | s = zbc_num_r(a, b, &c1, c, scale, ts); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2125 | bc_num_free(&c1); |
| 2126 | |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2127 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2128 | } |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2129 | #if ERRORS_ARE_FATAL |
| 2130 | # define zbc_num_rem(...) (zbc_num_rem(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 2131 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2132 | |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2133 | static FAST_FUNC BC_STATUS zbc_num_p(BcNum *a, BcNum *b, BcNum *restrict c, size_t scale) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2134 | { |
| 2135 | BcStatus s = BC_STATUS_SUCCESS; |
| 2136 | BcNum copy; |
| 2137 | unsigned long pow; |
| 2138 | size_t i, powrdx, resrdx; |
| 2139 | bool neg, zero; |
| 2140 | |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2141 | if (b->rdx) RETURN_STATUS(bc_error("non integer number")); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2142 | |
| 2143 | if (b->len == 0) { |
| 2144 | bc_num_one(c); |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2145 | RETURN_STATUS(BC_STATUS_SUCCESS); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2146 | } |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2147 | if (a->len == 0) { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2148 | bc_num_setToZero(c, scale); |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2149 | RETURN_STATUS(BC_STATUS_SUCCESS); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2150 | } |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2151 | if (BC_NUM_ONE(b)) { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2152 | if (!b->neg) |
| 2153 | bc_num_copy(c, a); |
| 2154 | else |
Denys Vlasenko | 1aeacef | 2018-12-11 19:12:13 +0100 | [diff] [blame] | 2155 | s = zbc_num_inv(a, c, scale); |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2156 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2157 | } |
| 2158 | |
| 2159 | neg = b->neg; |
| 2160 | b->neg = false; |
| 2161 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 2162 | s = zbc_num_ulong(b, &pow); |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2163 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2164 | |
| 2165 | bc_num_init(©, a->len); |
| 2166 | bc_num_copy(©, a); |
| 2167 | |
Denys Vlasenko | 2d615fe | 2018-12-07 16:22:45 +0100 | [diff] [blame] | 2168 | if (!neg) { |
| 2169 | if (a->rdx > scale) |
| 2170 | scale = a->rdx; |
| 2171 | if (a->rdx * pow < scale) |
| 2172 | scale = a->rdx * pow; |
| 2173 | } |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2174 | |
| 2175 | b->neg = neg; |
| 2176 | |
Denys Vlasenko | 71e1fc6 | 2018-12-02 19:43:34 +0100 | [diff] [blame] | 2177 | for (powrdx = a->rdx; !(pow & 1); pow >>= 1) { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2178 | powrdx <<= 1; |
Denys Vlasenko | 1aeacef | 2018-12-11 19:12:13 +0100 | [diff] [blame] | 2179 | s = zbc_num_mul(©, ©, ©, powrdx); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2180 | if (s) goto err; |
Denys Vlasenko | 1aeacef | 2018-12-11 19:12:13 +0100 | [diff] [blame] | 2181 | // Not needed: zbc_num_mul() has a check for ^C: |
Denys Vlasenko | 06fa65b | 2018-12-05 19:00:58 +0100 | [diff] [blame] | 2182 | //if (G_interrupt) { |
| 2183 | // s = BC_STATUS_FAILURE; |
| 2184 | // goto err; |
| 2185 | //} |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2186 | } |
| 2187 | |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2188 | bc_num_copy(c, ©); |
| 2189 | |
Denys Vlasenko | 71e1fc6 | 2018-12-02 19:43:34 +0100 | [diff] [blame] | 2190 | for (resrdx = powrdx, pow >>= 1; pow != 0; pow >>= 1) { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2191 | |
| 2192 | powrdx <<= 1; |
Denys Vlasenko | 1aeacef | 2018-12-11 19:12:13 +0100 | [diff] [blame] | 2193 | s = zbc_num_mul(©, ©, ©, powrdx); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2194 | if (s) goto err; |
| 2195 | |
| 2196 | if (pow & 1) { |
| 2197 | resrdx += powrdx; |
Denys Vlasenko | 1aeacef | 2018-12-11 19:12:13 +0100 | [diff] [blame] | 2198 | s = zbc_num_mul(c, ©, c, resrdx); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2199 | if (s) goto err; |
| 2200 | } |
Denys Vlasenko | 1aeacef | 2018-12-11 19:12:13 +0100 | [diff] [blame] | 2201 | // Not needed: zbc_num_mul() has a check for ^C: |
Denys Vlasenko | 06fa65b | 2018-12-05 19:00:58 +0100 | [diff] [blame] | 2202 | //if (G_interrupt) { |
| 2203 | // s = BC_STATUS_FAILURE; |
| 2204 | // goto err; |
| 2205 | //} |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2206 | } |
| 2207 | |
| 2208 | if (neg) { |
Denys Vlasenko | 1aeacef | 2018-12-11 19:12:13 +0100 | [diff] [blame] | 2209 | s = zbc_num_inv(c, c, scale); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2210 | if (s) goto err; |
| 2211 | } |
| 2212 | |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2213 | if (c->rdx > scale) bc_num_truncate(c, c->rdx - scale); |
| 2214 | |
| 2215 | // We can't use bc_num_clean() here. |
| 2216 | for (zero = true, i = 0; zero && i < c->len; ++i) zero = !c->num[i]; |
| 2217 | if (zero) bc_num_setToZero(c, scale); |
| 2218 | |
| 2219 | err: |
| 2220 | bc_num_free(©); |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2221 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2222 | } |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2223 | #if ERRORS_ARE_FATAL |
| 2224 | # define zbc_num_p(...) (zbc_num_p(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 2225 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2226 | |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2227 | static BC_STATUS zbc_num_binary(BcNum *a, BcNum *b, BcNum *c, size_t scale, |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2228 | BcNumBinaryOp op, size_t req) |
| 2229 | { |
| 2230 | BcStatus s; |
| 2231 | BcNum num2, *ptr_a, *ptr_b; |
| 2232 | bool init = false; |
| 2233 | |
| 2234 | if (c == a) { |
| 2235 | ptr_a = &num2; |
| 2236 | memcpy(ptr_a, c, sizeof(BcNum)); |
| 2237 | init = true; |
| 2238 | } |
| 2239 | else |
| 2240 | ptr_a = a; |
| 2241 | |
| 2242 | if (c == b) { |
| 2243 | ptr_b = &num2; |
| 2244 | if (c != a) { |
| 2245 | memcpy(ptr_b, c, sizeof(BcNum)); |
| 2246 | init = true; |
| 2247 | } |
| 2248 | } |
| 2249 | else |
| 2250 | ptr_b = b; |
| 2251 | |
| 2252 | if (init) |
| 2253 | bc_num_init(c, req); |
| 2254 | else |
| 2255 | bc_num_expand(c, req); |
| 2256 | |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2257 | s = BC_STATUS_SUCCESS; |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 2258 | ERROR_RETURN(s =) op(ptr_a, ptr_b, c, scale); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2259 | |
| 2260 | if (init) bc_num_free(&num2); |
| 2261 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 2262 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2263 | } |
Denys Vlasenko | fa35e59 | 2018-12-10 20:17:24 +0100 | [diff] [blame] | 2264 | #if ERRORS_ARE_FATAL |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2265 | # define zbc_num_binary(...) (zbc_num_binary(__VA_ARGS__), BC_STATUS_SUCCESS) |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 2266 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2267 | |
Denys Vlasenko | 9311e01 | 2018-12-10 11:54:18 +0100 | [diff] [blame] | 2268 | static bool bc_num_strValid(const char *val, size_t base) |
| 2269 | { |
| 2270 | BcDig b; |
| 2271 | bool radix; |
| 2272 | |
| 2273 | b = (BcDig)(base <= 10 ? base + '0' : base - 10 + 'A'); |
| 2274 | radix = false; |
| 2275 | for (;;) { |
| 2276 | BcDig c = *val++; |
| 2277 | if (c == '\0') |
| 2278 | break; |
| 2279 | if (c == '.') { |
| 2280 | if (radix) return false; |
| 2281 | radix = true; |
| 2282 | continue; |
| 2283 | } |
| 2284 | if (c < '0' || c >= b || (c > '9' && c < 'A')) |
| 2285 | return false; |
| 2286 | } |
| 2287 | return true; |
| 2288 | } |
| 2289 | |
| 2290 | // Note: n is already "bc_num_zero()"ed, |
| 2291 | // leading zeroes in "val" are removed |
| 2292 | static void bc_num_parseDecimal(BcNum *n, const char *val) |
| 2293 | { |
| 2294 | size_t len, i; |
| 2295 | const char *ptr; |
Denys Vlasenko | 9311e01 | 2018-12-10 11:54:18 +0100 | [diff] [blame] | 2296 | |
| 2297 | len = strlen(val); |
| 2298 | if (len == 0) |
| 2299 | return; |
| 2300 | |
Denys Vlasenko | 9311e01 | 2018-12-10 11:54:18 +0100 | [diff] [blame] | 2301 | bc_num_expand(n, len); |
| 2302 | |
| 2303 | ptr = strchr(val, '.'); |
| 2304 | |
| 2305 | n->rdx = 0; |
| 2306 | if (ptr != NULL) |
| 2307 | n->rdx = (size_t)((val + len) - (ptr + 1)); |
| 2308 | |
Denys Vlasenko | dafbc2c | 2018-12-10 15:38:52 +0100 | [diff] [blame] | 2309 | for (i = 0; val[i]; ++i) { |
| 2310 | if (val[i] != '0' && val[i] != '.') { |
| 2311 | // Not entirely zero value - convert it, and exit |
| 2312 | i = len - 1; |
| 2313 | for (;;) { |
| 2314 | n->num[n->len] = val[i] - '0'; |
| 2315 | ++n->len; |
Denys Vlasenko | 9311e01 | 2018-12-10 11:54:18 +0100 | [diff] [blame] | 2316 | skip_dot: |
Denys Vlasenko | 87b49be | 2018-12-14 16:24:01 +0100 | [diff] [blame] | 2317 | if (i == 0) break; |
| 2318 | if (val[--i] == '.') goto skip_dot; |
Denys Vlasenko | dafbc2c | 2018-12-10 15:38:52 +0100 | [diff] [blame] | 2319 | } |
| 2320 | break; |
Denys Vlasenko | 9311e01 | 2018-12-10 11:54:18 +0100 | [diff] [blame] | 2321 | } |
| 2322 | } |
Denys Vlasenko | 87b49be | 2018-12-14 16:24:01 +0100 | [diff] [blame] | 2323 | // if for() exits without hitting if(), the value is entirely zero |
Denys Vlasenko | 9311e01 | 2018-12-10 11:54:18 +0100 | [diff] [blame] | 2324 | } |
| 2325 | |
| 2326 | // Note: n is already "bc_num_zero()"ed, |
| 2327 | // leading zeroes in "val" are removed |
| 2328 | static void bc_num_parseBase(BcNum *n, const char *val, BcNum *base) |
| 2329 | { |
| 2330 | BcStatus s; |
| 2331 | BcNum temp, mult, result; |
| 2332 | BcDig c = '\0'; |
| 2333 | unsigned long v; |
| 2334 | size_t i, digits; |
| 2335 | |
| 2336 | for (i = 0; ; ++i) { |
| 2337 | if (val[i] == '\0') |
| 2338 | return; |
| 2339 | if (val[i] != '.' && val[i] != '0') |
| 2340 | break; |
| 2341 | } |
| 2342 | |
| 2343 | bc_num_init_DEF_SIZE(&temp); |
| 2344 | bc_num_init_DEF_SIZE(&mult); |
| 2345 | |
| 2346 | for (;;) { |
| 2347 | c = *val++; |
| 2348 | if (c == '\0') goto int_err; |
| 2349 | if (c == '.') break; |
| 2350 | |
| 2351 | v = (unsigned long) (c <= '9' ? c - '0' : c - 'A' + 10); |
| 2352 | |
Denys Vlasenko | 1aeacef | 2018-12-11 19:12:13 +0100 | [diff] [blame] | 2353 | s = zbc_num_mul(n, base, &mult, 0); |
Denys Vlasenko | 9311e01 | 2018-12-10 11:54:18 +0100 | [diff] [blame] | 2354 | if (s) goto int_err; |
| 2355 | bc_num_ulong2num(&temp, v); |
Denys Vlasenko | 1aeacef | 2018-12-11 19:12:13 +0100 | [diff] [blame] | 2356 | s = zbc_num_add(&mult, &temp, n, 0); |
Denys Vlasenko | 9311e01 | 2018-12-10 11:54:18 +0100 | [diff] [blame] | 2357 | if (s) goto int_err; |
| 2358 | } |
| 2359 | |
| 2360 | bc_num_init(&result, base->len); |
| 2361 | //bc_num_zero(&result); - already is |
| 2362 | bc_num_one(&mult); |
| 2363 | |
| 2364 | digits = 0; |
| 2365 | for (;;) { |
| 2366 | c = *val++; |
| 2367 | if (c == '\0') break; |
| 2368 | digits++; |
| 2369 | |
| 2370 | v = (unsigned long) (c <= '9' ? c - '0' : c - 'A' + 10); |
| 2371 | |
Denys Vlasenko | 1aeacef | 2018-12-11 19:12:13 +0100 | [diff] [blame] | 2372 | s = zbc_num_mul(&result, base, &result, 0); |
Denys Vlasenko | 9311e01 | 2018-12-10 11:54:18 +0100 | [diff] [blame] | 2373 | if (s) goto err; |
| 2374 | bc_num_ulong2num(&temp, v); |
Denys Vlasenko | 1aeacef | 2018-12-11 19:12:13 +0100 | [diff] [blame] | 2375 | s = zbc_num_add(&result, &temp, &result, 0); |
Denys Vlasenko | 9311e01 | 2018-12-10 11:54:18 +0100 | [diff] [blame] | 2376 | if (s) goto err; |
Denys Vlasenko | 1aeacef | 2018-12-11 19:12:13 +0100 | [diff] [blame] | 2377 | s = zbc_num_mul(&mult, base, &mult, 0); |
Denys Vlasenko | 9311e01 | 2018-12-10 11:54:18 +0100 | [diff] [blame] | 2378 | if (s) goto err; |
| 2379 | } |
| 2380 | |
Denys Vlasenko | 1aeacef | 2018-12-11 19:12:13 +0100 | [diff] [blame] | 2381 | s = zbc_num_div(&result, &mult, &result, digits); |
Denys Vlasenko | 9311e01 | 2018-12-10 11:54:18 +0100 | [diff] [blame] | 2382 | if (s) goto err; |
Denys Vlasenko | 1aeacef | 2018-12-11 19:12:13 +0100 | [diff] [blame] | 2383 | s = zbc_num_add(n, &result, n, digits); |
Denys Vlasenko | 9311e01 | 2018-12-10 11:54:18 +0100 | [diff] [blame] | 2384 | if (s) goto err; |
| 2385 | |
| 2386 | if (n->len != 0) { |
| 2387 | if (n->rdx < digits) bc_num_extend(n, digits - n->rdx); |
| 2388 | } else |
| 2389 | bc_num_zero(n); |
| 2390 | |
| 2391 | err: |
| 2392 | bc_num_free(&result); |
| 2393 | int_err: |
| 2394 | bc_num_free(&mult); |
| 2395 | bc_num_free(&temp); |
| 2396 | } |
| 2397 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 2398 | static BC_STATUS zbc_num_parse(BcNum *n, const char *val, BcNum *base, |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2399 | size_t base_t) |
| 2400 | { |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 2401 | if (!bc_num_strValid(val, base_t)) |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 2402 | RETURN_STATUS(bc_error("bad number string")); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2403 | |
Denys Vlasenko | 4a024c7 | 2018-12-09 13:21:54 +0100 | [diff] [blame] | 2404 | bc_num_zero(n); |
| 2405 | while (*val == '0') val++; |
| 2406 | |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2407 | if (base_t == 10) |
| 2408 | bc_num_parseDecimal(n, val); |
| 2409 | else |
| 2410 | bc_num_parseBase(n, val, base); |
| 2411 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 2412 | RETURN_STATUS(BC_STATUS_SUCCESS); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2413 | } |
Denys Vlasenko | fa35e59 | 2018-12-10 20:17:24 +0100 | [diff] [blame] | 2414 | #if ERRORS_ARE_FATAL |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 2415 | # define zbc_num_parse(...) (zbc_num_parse(__VA_ARGS__), BC_STATUS_SUCCESS) |
Denys Vlasenko | fa35e59 | 2018-12-10 20:17:24 +0100 | [diff] [blame] | 2416 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2417 | |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2418 | static BC_STATUS zbc_num_sqrt(BcNum *a, BcNum *restrict b, size_t scale) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2419 | { |
| 2420 | BcStatus s; |
| 2421 | BcNum num1, num2, half, f, fprime, *x0, *x1, *temp; |
| 2422 | size_t pow, len, digs, digs1, resrdx, req, times = 0; |
| 2423 | ssize_t cmp = 1, cmp1 = SSIZE_MAX, cmp2 = SSIZE_MAX; |
| 2424 | |
| 2425 | req = BC_MAX(scale, a->rdx) + ((BC_NUM_INT(a) + 1) >> 1) + 1; |
| 2426 | bc_num_expand(b, req); |
| 2427 | |
| 2428 | if (a->len == 0) { |
| 2429 | bc_num_setToZero(b, scale); |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2430 | RETURN_STATUS(BC_STATUS_SUCCESS); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2431 | } |
| 2432 | else if (a->neg) |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2433 | RETURN_STATUS(bc_error("negative number")); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2434 | else if (BC_NUM_ONE(a)) { |
| 2435 | bc_num_one(b); |
| 2436 | bc_num_extend(b, scale); |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2437 | RETURN_STATUS(BC_STATUS_SUCCESS); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2438 | } |
| 2439 | |
| 2440 | scale = BC_MAX(scale, a->rdx) + 1; |
| 2441 | len = a->len + scale; |
| 2442 | |
| 2443 | bc_num_init(&num1, len); |
| 2444 | bc_num_init(&num2, len); |
Denys Vlasenko | e20e00d | 2018-12-09 11:44:20 +0100 | [diff] [blame] | 2445 | bc_num_init_DEF_SIZE(&half); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2446 | |
| 2447 | bc_num_one(&half); |
| 2448 | half.num[0] = 5; |
| 2449 | half.rdx = 1; |
| 2450 | |
| 2451 | bc_num_init(&f, len); |
| 2452 | bc_num_init(&fprime, len); |
| 2453 | |
| 2454 | x0 = &num1; |
| 2455 | x1 = &num2; |
| 2456 | |
| 2457 | bc_num_one(x0); |
| 2458 | pow = BC_NUM_INT(a); |
| 2459 | |
| 2460 | if (pow) { |
| 2461 | |
| 2462 | if (pow & 1) |
| 2463 | x0->num[0] = 2; |
| 2464 | else |
| 2465 | x0->num[0] = 6; |
| 2466 | |
| 2467 | pow -= 2 - (pow & 1); |
| 2468 | |
| 2469 | bc_num_extend(x0, pow); |
| 2470 | |
| 2471 | // Make sure to move the radix back. |
| 2472 | x0->rdx -= pow; |
| 2473 | } |
| 2474 | |
| 2475 | x0->rdx = digs = digs1 = 0; |
| 2476 | resrdx = scale + 2; |
| 2477 | len = BC_NUM_INT(x0) + resrdx - 1; |
| 2478 | |
Denys Vlasenko | 71e1fc6 | 2018-12-02 19:43:34 +0100 | [diff] [blame] | 2479 | while (cmp != 0 || digs < len) { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2480 | |
Denys Vlasenko | 1aeacef | 2018-12-11 19:12:13 +0100 | [diff] [blame] | 2481 | s = zbc_num_div(a, x0, &f, resrdx); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2482 | if (s) goto err; |
Denys Vlasenko | 1aeacef | 2018-12-11 19:12:13 +0100 | [diff] [blame] | 2483 | s = zbc_num_add(x0, &f, &fprime, resrdx); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2484 | if (s) goto err; |
Denys Vlasenko | 1aeacef | 2018-12-11 19:12:13 +0100 | [diff] [blame] | 2485 | s = zbc_num_mul(&fprime, &half, x1, resrdx); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2486 | if (s) goto err; |
| 2487 | |
| 2488 | cmp = bc_num_cmp(x1, x0); |
| 2489 | digs = x1->len - (unsigned long long) llabs(cmp); |
| 2490 | |
| 2491 | if (cmp == cmp2 && digs == digs1) |
| 2492 | times += 1; |
| 2493 | else |
| 2494 | times = 0; |
| 2495 | |
| 2496 | resrdx += times > 4; |
| 2497 | |
| 2498 | cmp2 = cmp1; |
| 2499 | cmp1 = cmp; |
| 2500 | digs1 = digs; |
| 2501 | |
| 2502 | temp = x0; |
| 2503 | x0 = x1; |
| 2504 | x1 = temp; |
| 2505 | } |
| 2506 | |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2507 | bc_num_copy(b, x0); |
| 2508 | scale -= 1; |
| 2509 | if (b->rdx > scale) bc_num_truncate(b, b->rdx - scale); |
| 2510 | |
| 2511 | err: |
| 2512 | bc_num_free(&fprime); |
| 2513 | bc_num_free(&f); |
| 2514 | bc_num_free(&half); |
| 2515 | bc_num_free(&num2); |
| 2516 | bc_num_free(&num1); |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2517 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2518 | } |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2519 | #if ERRORS_ARE_FATAL |
| 2520 | # define zbc_num_sqrt(...) (zbc_num_sqrt(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 2521 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2522 | |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2523 | static BC_STATUS zbc_num_divmod(BcNum *a, BcNum *b, BcNum *c, BcNum *d, |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2524 | size_t scale) |
| 2525 | { |
| 2526 | BcStatus s; |
| 2527 | BcNum num2, *ptr_a; |
| 2528 | bool init = false; |
| 2529 | size_t ts = BC_MAX(scale + b->rdx, a->rdx), len = BC_NUM_MREQ(a, b, ts); |
| 2530 | |
| 2531 | if (c == a) { |
| 2532 | memcpy(&num2, c, sizeof(BcNum)); |
| 2533 | ptr_a = &num2; |
| 2534 | bc_num_init(c, len); |
| 2535 | init = true; |
| 2536 | } |
| 2537 | else { |
| 2538 | ptr_a = a; |
| 2539 | bc_num_expand(c, len); |
| 2540 | } |
| 2541 | |
Denys Vlasenko | 1aeacef | 2018-12-11 19:12:13 +0100 | [diff] [blame] | 2542 | s = zbc_num_r(ptr_a, b, c, d, scale, ts); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2543 | |
| 2544 | if (init) bc_num_free(&num2); |
| 2545 | |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2546 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2547 | } |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2548 | #if ERRORS_ARE_FATAL |
| 2549 | # define zbc_num_divmod(...) (zbc_num_divmod(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 2550 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2551 | |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 2552 | #if ENABLE_DC |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2553 | static BC_STATUS zbc_num_modexp(BcNum *a, BcNum *b, BcNum *c, BcNum *restrict d) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2554 | { |
| 2555 | BcStatus s; |
| 2556 | BcNum base, exp, two, temp; |
| 2557 | |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 2558 | if (c->len == 0) |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2559 | RETURN_STATUS(bc_error("divide by zero")); |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 2560 | if (a->rdx || b->rdx || c->rdx) |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2561 | RETURN_STATUS(bc_error("non integer number")); |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 2562 | if (b->neg) |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2563 | RETURN_STATUS(bc_error("negative number")); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2564 | |
| 2565 | bc_num_expand(d, c->len); |
| 2566 | bc_num_init(&base, c->len); |
| 2567 | bc_num_init(&exp, b->len); |
Denys Vlasenko | e20e00d | 2018-12-09 11:44:20 +0100 | [diff] [blame] | 2568 | bc_num_init_DEF_SIZE(&two); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2569 | bc_num_init(&temp, b->len); |
| 2570 | |
| 2571 | bc_num_one(&two); |
| 2572 | two.num[0] = 2; |
| 2573 | bc_num_one(d); |
| 2574 | |
Denys Vlasenko | 1aeacef | 2018-12-11 19:12:13 +0100 | [diff] [blame] | 2575 | s = zbc_num_rem(a, c, &base, 0); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2576 | if (s) goto err; |
| 2577 | bc_num_copy(&exp, b); |
| 2578 | |
| 2579 | while (exp.len != 0) { |
| 2580 | |
Denys Vlasenko | 1aeacef | 2018-12-11 19:12:13 +0100 | [diff] [blame] | 2581 | s = zbc_num_divmod(&exp, &two, &exp, &temp, 0); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2582 | if (s) goto err; |
| 2583 | |
| 2584 | if (BC_NUM_ONE(&temp)) { |
Denys Vlasenko | 1aeacef | 2018-12-11 19:12:13 +0100 | [diff] [blame] | 2585 | s = zbc_num_mul(d, &base, &temp, 0); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2586 | if (s) goto err; |
Denys Vlasenko | 1aeacef | 2018-12-11 19:12:13 +0100 | [diff] [blame] | 2587 | s = zbc_num_rem(&temp, c, d, 0); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2588 | if (s) goto err; |
| 2589 | } |
| 2590 | |
Denys Vlasenko | 1aeacef | 2018-12-11 19:12:13 +0100 | [diff] [blame] | 2591 | s = zbc_num_mul(&base, &base, &temp, 0); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2592 | if (s) goto err; |
Denys Vlasenko | 1aeacef | 2018-12-11 19:12:13 +0100 | [diff] [blame] | 2593 | s = zbc_num_rem(&temp, c, &base, 0); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2594 | if (s) goto err; |
| 2595 | } |
| 2596 | |
| 2597 | err: |
| 2598 | bc_num_free(&temp); |
| 2599 | bc_num_free(&two); |
| 2600 | bc_num_free(&exp); |
| 2601 | bc_num_free(&base); |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2602 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2603 | } |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 2604 | #if ERRORS_ARE_FATAL |
| 2605 | # define zbc_num_modexp(...) (zbc_num_modexp(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 2606 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2607 | #endif // ENABLE_DC |
| 2608 | |
Denys Vlasenko | 23c2e9f | 2018-12-06 11:43:17 +0100 | [diff] [blame] | 2609 | #if ENABLE_BC |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 2610 | static BC_STATUS zbc_func_insert(BcFunc *f, char *name, bool var) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2611 | { |
| 2612 | BcId a; |
| 2613 | size_t i; |
| 2614 | |
| 2615 | for (i = 0; i < f->autos.len; ++i) { |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 2616 | if (strcmp(name, ((BcId *) bc_vec_item(&f->autos, i))->name) == 0) |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 2617 | RETURN_STATUS(bc_error("function parameter or auto var has the same name as another")); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2618 | } |
| 2619 | |
| 2620 | a.idx = var; |
| 2621 | a.name = name; |
| 2622 | |
| 2623 | bc_vec_push(&f->autos, &a); |
| 2624 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 2625 | RETURN_STATUS(BC_STATUS_SUCCESS); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2626 | } |
Denys Vlasenko | fa35e59 | 2018-12-10 20:17:24 +0100 | [diff] [blame] | 2627 | #if ERRORS_ARE_FATAL |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 2628 | # define zbc_func_insert(...) (zbc_func_insert(__VA_ARGS__), BC_STATUS_SUCCESS) |
Denys Vlasenko | fa35e59 | 2018-12-10 20:17:24 +0100 | [diff] [blame] | 2629 | #endif |
Denys Vlasenko | 23c2e9f | 2018-12-06 11:43:17 +0100 | [diff] [blame] | 2630 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2631 | |
| 2632 | static void bc_func_init(BcFunc *f) |
| 2633 | { |
Denys Vlasenko | 7d62801 | 2018-12-04 21:46:47 +0100 | [diff] [blame] | 2634 | bc_char_vec_init(&f->code); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2635 | bc_vec_init(&f->autos, sizeof(BcId), bc_id_free); |
| 2636 | bc_vec_init(&f->labels, sizeof(size_t), NULL); |
| 2637 | f->nparams = 0; |
| 2638 | } |
| 2639 | |
Denys Vlasenko | 5ba55f1 | 2018-12-10 15:37:14 +0100 | [diff] [blame] | 2640 | static FAST_FUNC void bc_func_free(void *func) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2641 | { |
| 2642 | BcFunc *f = (BcFunc *) func; |
| 2643 | bc_vec_free(&f->code); |
| 2644 | bc_vec_free(&f->autos); |
| 2645 | bc_vec_free(&f->labels); |
| 2646 | } |
| 2647 | |
Denys Vlasenko | b0e3761 | 2018-12-05 21:03:16 +0100 | [diff] [blame] | 2648 | static void bc_array_expand(BcVec *a, size_t len); |
| 2649 | |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2650 | static void bc_array_init(BcVec *a, bool nums) |
| 2651 | { |
| 2652 | if (nums) |
| 2653 | bc_vec_init(a, sizeof(BcNum), bc_num_free); |
| 2654 | else |
| 2655 | bc_vec_init(a, sizeof(BcVec), bc_vec_free); |
| 2656 | bc_array_expand(a, 1); |
| 2657 | } |
| 2658 | |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2659 | static void bc_array_expand(BcVec *a, size_t len) |
| 2660 | { |
| 2661 | BcResultData data; |
| 2662 | |
| 2663 | if (a->size == sizeof(BcNum) && a->dtor == bc_num_free) { |
| 2664 | while (len > a->len) { |
Denys Vlasenko | e20e00d | 2018-12-09 11:44:20 +0100 | [diff] [blame] | 2665 | bc_num_init_DEF_SIZE(&data.n); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2666 | bc_vec_push(a, &data.n); |
| 2667 | } |
| 2668 | } |
| 2669 | else { |
| 2670 | while (len > a->len) { |
| 2671 | bc_array_init(&data.v, true); |
| 2672 | bc_vec_push(a, &data.v); |
| 2673 | } |
| 2674 | } |
| 2675 | } |
| 2676 | |
Denys Vlasenko | b0e3761 | 2018-12-05 21:03:16 +0100 | [diff] [blame] | 2677 | static void bc_array_copy(BcVec *d, const BcVec *s) |
| 2678 | { |
| 2679 | size_t i; |
| 2680 | |
| 2681 | bc_vec_pop_all(d); |
| 2682 | bc_vec_expand(d, s->cap); |
| 2683 | d->len = s->len; |
| 2684 | |
| 2685 | for (i = 0; i < s->len; ++i) { |
| 2686 | BcNum *dnum = bc_vec_item(d, i), *snum = bc_vec_item(s, i); |
| 2687 | bc_num_init(dnum, snum->len); |
| 2688 | bc_num_copy(dnum, snum); |
| 2689 | } |
| 2690 | } |
| 2691 | |
Denys Vlasenko | 5ba55f1 | 2018-12-10 15:37:14 +0100 | [diff] [blame] | 2692 | static FAST_FUNC void bc_string_free(void *string) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2693 | { |
| 2694 | free(*((char **) string)); |
| 2695 | } |
| 2696 | |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 2697 | #if ENABLE_DC |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2698 | static void bc_result_copy(BcResult *d, BcResult *src) |
| 2699 | { |
| 2700 | d->t = src->t; |
| 2701 | |
| 2702 | switch (d->t) { |
| 2703 | |
| 2704 | case BC_RESULT_TEMP: |
| 2705 | case BC_RESULT_IBASE: |
| 2706 | case BC_RESULT_SCALE: |
| 2707 | case BC_RESULT_OBASE: |
| 2708 | { |
| 2709 | bc_num_init(&d->d.n, src->d.n.len); |
| 2710 | bc_num_copy(&d->d.n, &src->d.n); |
| 2711 | break; |
| 2712 | } |
| 2713 | |
| 2714 | case BC_RESULT_VAR: |
| 2715 | case BC_RESULT_ARRAY: |
| 2716 | case BC_RESULT_ARRAY_ELEM: |
| 2717 | { |
| 2718 | d->d.id.name = xstrdup(src->d.id.name); |
| 2719 | break; |
| 2720 | } |
| 2721 | |
| 2722 | case BC_RESULT_CONSTANT: |
| 2723 | case BC_RESULT_LAST: |
| 2724 | case BC_RESULT_ONE: |
| 2725 | case BC_RESULT_STR: |
| 2726 | { |
| 2727 | memcpy(&d->d.n, &src->d.n, sizeof(BcNum)); |
| 2728 | break; |
| 2729 | } |
| 2730 | } |
| 2731 | } |
| 2732 | #endif // ENABLE_DC |
| 2733 | |
Denys Vlasenko | 5ba55f1 | 2018-12-10 15:37:14 +0100 | [diff] [blame] | 2734 | static FAST_FUNC void bc_result_free(void *result) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2735 | { |
| 2736 | BcResult *r = (BcResult *) result; |
| 2737 | |
| 2738 | switch (r->t) { |
| 2739 | |
| 2740 | case BC_RESULT_TEMP: |
| 2741 | case BC_RESULT_IBASE: |
| 2742 | case BC_RESULT_SCALE: |
| 2743 | case BC_RESULT_OBASE: |
| 2744 | { |
| 2745 | bc_num_free(&r->d.n); |
| 2746 | break; |
| 2747 | } |
| 2748 | |
| 2749 | case BC_RESULT_VAR: |
| 2750 | case BC_RESULT_ARRAY: |
| 2751 | case BC_RESULT_ARRAY_ELEM: |
| 2752 | { |
| 2753 | free(r->d.id.name); |
| 2754 | break; |
| 2755 | } |
| 2756 | |
| 2757 | default: |
| 2758 | { |
| 2759 | // Do nothing. |
| 2760 | break; |
| 2761 | } |
| 2762 | } |
| 2763 | } |
| 2764 | |
| 2765 | static void bc_lex_lineComment(BcLex *l) |
| 2766 | { |
| 2767 | l->t.t = BC_LEX_WHITESPACE; |
| 2768 | while (l->i < l->len && l->buf[l->i++] != '\n'); |
| 2769 | --l->i; |
| 2770 | } |
| 2771 | |
| 2772 | static void bc_lex_whitespace(BcLex *l) |
| 2773 | { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2774 | l->t.t = BC_LEX_WHITESPACE; |
Denys Vlasenko | 89198a9 | 2018-12-13 21:31:29 +0100 | [diff] [blame] | 2775 | for (;;) { |
| 2776 | char c = l->buf[l->i]; |
Denys Vlasenko | 9dc5d08 | 2018-12-16 18:43:51 +0100 | [diff] [blame] | 2777 | if (c == '\n') // this is BC_LEX_NLINE, not BC_LEX_WHITESPACE |
| 2778 | break; |
| 2779 | if (!isspace(c)) |
Denys Vlasenko | 89198a9 | 2018-12-13 21:31:29 +0100 | [diff] [blame] | 2780 | break; |
| 2781 | l->i++; |
| 2782 | } |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2783 | } |
| 2784 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 2785 | static BC_STATUS zbc_lex_number(BcLex *l, char start) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2786 | { |
| 2787 | const char *buf = l->buf + l->i; |
Denys Vlasenko | c355c4a | 2018-12-11 17:36:21 +0100 | [diff] [blame] | 2788 | size_t len, bslashes, i, ccnt; |
| 2789 | bool pt; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2790 | |
Denys Vlasenko | c355c4a | 2018-12-11 17:36:21 +0100 | [diff] [blame] | 2791 | pt = (start == '.'); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2792 | l->t.t = BC_LEX_NUMBER; |
Denys Vlasenko | c355c4a | 2018-12-11 17:36:21 +0100 | [diff] [blame] | 2793 | bslashes = 0; |
| 2794 | ccnt = i = 0; |
| 2795 | for (;;) { |
| 2796 | char c = buf[i]; |
| 2797 | if (c == '\0') |
| 2798 | break; |
| 2799 | if (c == '\\' && buf[i + 1] == '\n') { |
| 2800 | i += 2; |
| 2801 | bslashes++; |
| 2802 | continue; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2803 | } |
Denys Vlasenko | c355c4a | 2018-12-11 17:36:21 +0100 | [diff] [blame] | 2804 | if (!isdigit(c) && (c < 'A' || c > 'F')) { |
| 2805 | if (c != '.') break; |
| 2806 | // if '.' was already seen, stop on second one: |
| 2807 | if (pt) break; |
| 2808 | pt = 1; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2809 | } |
Denys Vlasenko | c355c4a | 2018-12-11 17:36:21 +0100 | [diff] [blame] | 2810 | // buf[i] is one of "0-9A-F." |
| 2811 | i++; |
| 2812 | if (c != '.') |
| 2813 | ccnt = i; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2814 | } |
Denys Vlasenko | c355c4a | 2018-12-11 17:36:21 +0100 | [diff] [blame] | 2815 | //i is buf[i] index of the first not-yet-parsed char |
| 2816 | l->i += i; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2817 | |
Denys Vlasenko | c355c4a | 2018-12-11 17:36:21 +0100 | [diff] [blame] | 2818 | //ccnt is the number of chars in the number string, excluding possible |
| 2819 | //trailing "." and possible following trailing "\<newline>"(s). |
| 2820 | len = ccnt - bslashes * 2 + 1; // +1 byte for NUL termination |
| 2821 | |
Denys Vlasenko | 64074a1 | 2018-12-07 15:50:14 +0100 | [diff] [blame] | 2822 | // This check makes sense only if size_t is (much) larger than BC_MAX_NUM. |
| 2823 | if (SIZE_MAX > (BC_MAX_NUM | 0xff)) { |
| 2824 | if (len > BC_MAX_NUM) |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 2825 | RETURN_STATUS(bc_error("number too long: must be [1,"BC_MAX_NUM_STR"]")); |
Denys Vlasenko | 64074a1 | 2018-12-07 15:50:14 +0100 | [diff] [blame] | 2826 | } |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2827 | |
Denys Vlasenko | 7d62801 | 2018-12-04 21:46:47 +0100 | [diff] [blame] | 2828 | bc_vec_pop_all(&l->t.v); |
Denys Vlasenko | c355c4a | 2018-12-11 17:36:21 +0100 | [diff] [blame] | 2829 | bc_vec_expand(&l->t.v, 1 + len); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2830 | bc_vec_push(&l->t.v, &start); |
| 2831 | |
Denys Vlasenko | c355c4a | 2018-12-11 17:36:21 +0100 | [diff] [blame] | 2832 | while (ccnt != 0) { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2833 | // If we have hit a backslash, skip it. We don't have |
| 2834 | // to check for a newline because it's guaranteed. |
Denys Vlasenko | c355c4a | 2018-12-11 17:36:21 +0100 | [diff] [blame] | 2835 | if (*buf == '\\') { |
| 2836 | buf += 2; |
| 2837 | ccnt -= 2; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2838 | continue; |
| 2839 | } |
Denys Vlasenko | c355c4a | 2018-12-11 17:36:21 +0100 | [diff] [blame] | 2840 | bc_vec_push(&l->t.v, buf); |
| 2841 | buf++; |
| 2842 | ccnt--; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2843 | } |
| 2844 | |
Denys Vlasenko | 08c033c | 2018-12-05 16:55:08 +0100 | [diff] [blame] | 2845 | bc_vec_pushZeroByte(&l->t.v); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2846 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 2847 | RETURN_STATUS(BC_STATUS_SUCCESS); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2848 | } |
Denys Vlasenko | fa35e59 | 2018-12-10 20:17:24 +0100 | [diff] [blame] | 2849 | #if ERRORS_ARE_FATAL |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 2850 | # define zbc_lex_number(...) (zbc_lex_number(__VA_ARGS__), BC_STATUS_SUCCESS) |
Denys Vlasenko | fa35e59 | 2018-12-10 20:17:24 +0100 | [diff] [blame] | 2851 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2852 | |
Denys Vlasenko | 88cfea6 | 2018-12-10 20:26:04 +0100 | [diff] [blame] | 2853 | static void bc_lex_name(BcLex *l) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2854 | { |
Denys Vlasenko | 88cfea6 | 2018-12-10 20:26:04 +0100 | [diff] [blame] | 2855 | size_t i; |
| 2856 | const char *buf; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2857 | |
| 2858 | l->t.t = BC_LEX_NAME; |
| 2859 | |
Denys Vlasenko | 88cfea6 | 2018-12-10 20:26:04 +0100 | [diff] [blame] | 2860 | i = 0; |
| 2861 | buf = l->buf + l->i - 1; |
| 2862 | for (;;) { |
| 2863 | char c = buf[i]; |
| 2864 | if ((c < 'a' || c > 'z') && !isdigit(c) && c != '_') break; |
| 2865 | i++; |
| 2866 | } |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2867 | |
Denys Vlasenko | 88cfea6 | 2018-12-10 20:26:04 +0100 | [diff] [blame] | 2868 | #if 0 // We do not protect against people with gigabyte-long names |
Denys Vlasenko | 64074a1 | 2018-12-07 15:50:14 +0100 | [diff] [blame] | 2869 | // This check makes sense only if size_t is (much) larger than BC_MAX_STRING. |
| 2870 | if (SIZE_MAX > (BC_MAX_STRING | 0xff)) { |
| 2871 | if (i > BC_MAX_STRING) |
| 2872 | return bc_error("name too long: must be [1,"BC_MAX_STRING_STR"]"); |
| 2873 | } |
Denys Vlasenko | 88cfea6 | 2018-12-10 20:26:04 +0100 | [diff] [blame] | 2874 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2875 | bc_vec_string(&l->t.v, i, buf); |
| 2876 | |
| 2877 | // Increment the index. We minus 1 because it has already been incremented. |
| 2878 | l->i += i - 1; |
| 2879 | |
Denys Vlasenko | 88cfea6 | 2018-12-10 20:26:04 +0100 | [diff] [blame] | 2880 | //return BC_STATUS_SUCCESS; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2881 | } |
| 2882 | |
Denys Vlasenko | c2265f5 | 2018-12-12 23:10:08 +0100 | [diff] [blame] | 2883 | static void bc_lex_init(BcLex *l) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2884 | { |
Denys Vlasenko | 7d62801 | 2018-12-04 21:46:47 +0100 | [diff] [blame] | 2885 | bc_char_vec_init(&l->t.v); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2886 | } |
| 2887 | |
| 2888 | static void bc_lex_free(BcLex *l) |
| 2889 | { |
| 2890 | bc_vec_free(&l->t.v); |
| 2891 | } |
| 2892 | |
Denys Vlasenko | 0409ad3 | 2018-12-05 16:39:22 +0100 | [diff] [blame] | 2893 | static void bc_lex_file(BcLex *l) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2894 | { |
Denys Vlasenko | 5318f81 | 2018-12-05 17:48:01 +0100 | [diff] [blame] | 2895 | G.err_line = l->line = 1; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2896 | l->newline = false; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2897 | } |
| 2898 | |
Denys Vlasenko | e755e30 | 2018-12-13 22:25:28 +0100 | [diff] [blame] | 2899 | IF_BC(static BC_STATUS zbc_lex_token(BcLex *l);) |
| 2900 | IF_DC(static BC_STATUS zdc_lex_token(BcLex *l);) |
Denys Vlasenko | c2265f5 | 2018-12-12 23:10:08 +0100 | [diff] [blame] | 2901 | |
| 2902 | static BC_STATUS zcommon_lex_token(BcLex *l) |
| 2903 | { |
| 2904 | if (IS_BC) { |
| 2905 | IF_BC(RETURN_STATUS(zbc_lex_token(l));) |
| 2906 | } |
| 2907 | IF_DC(RETURN_STATUS(zdc_lex_token(l));) |
| 2908 | } |
| 2909 | |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 2910 | static bool bc_lex_more_input(BcLex *l) |
| 2911 | { |
| 2912 | size_t str; |
| 2913 | bool comment; |
| 2914 | |
| 2915 | bc_vec_pop_all(&G.stdin_buffer); |
| 2916 | |
| 2917 | // This loop is complex because the vm tries not to send any lines that end |
| 2918 | // with a backslash to the parser. The reason for that is because the parser |
| 2919 | // treats a backslash+newline combo as whitespace, per the bc spec. In that |
| 2920 | // case, and for strings and comments, the parser will expect more stuff. |
| 2921 | comment = false; |
| 2922 | str = 0; |
| 2923 | for (;;) { |
| 2924 | size_t prevlen = G.stdin_buffer.len; |
| 2925 | char *string; |
| 2926 | |
| 2927 | bc_read_line(&G.stdin_buffer); |
| 2928 | // No more input means EOF |
| 2929 | if (G.stdin_buffer.len <= prevlen + 1) // (we expect +1 for NUL byte) |
| 2930 | break; |
| 2931 | |
| 2932 | string = G.stdin_buffer.v + prevlen; |
| 2933 | while (*string) { |
| 2934 | char c = *string; |
| 2935 | if (string == G.stdin_buffer.v || string[-1] != '\\') { |
| 2936 | if (IS_BC) |
| 2937 | str ^= (c == '"'); |
| 2938 | else { |
| 2939 | if (c == ']') |
| 2940 | str -= 1; |
| 2941 | else if (c == '[') |
| 2942 | str += 1; |
| 2943 | } |
| 2944 | } |
| 2945 | string++; |
| 2946 | if (c == '/' && *string == '*') { |
| 2947 | comment = true; |
| 2948 | string++; |
| 2949 | continue; |
| 2950 | } |
| 2951 | if (c == '*' && *string == '/') { |
| 2952 | comment = false; |
| 2953 | string++; |
| 2954 | } |
| 2955 | } |
| 2956 | if (str != 0 || comment) { |
| 2957 | G.stdin_buffer.len--; // backstep over the trailing NUL byte |
| 2958 | continue; |
| 2959 | } |
| 2960 | |
| 2961 | // Check for backslash+newline. |
| 2962 | // we do not check that last char is '\n' - |
| 2963 | // if it is not, then it's EOF, and looping back |
| 2964 | // to bc_read_line() will detect it: |
| 2965 | string -= 2; |
| 2966 | if (string >= G.stdin_buffer.v && *string == '\\') { |
| 2967 | G.stdin_buffer.len--; |
| 2968 | continue; |
| 2969 | } |
| 2970 | |
| 2971 | break; |
| 2972 | } |
| 2973 | |
| 2974 | l->buf = G.stdin_buffer.v; |
| 2975 | l->i = 0; |
| 2976 | //bb_error_msg("G.stdin_buffer.len:%d '%s'", G.stdin_buffer.len, G.stdin_buffer.v); |
| 2977 | l->len = G.stdin_buffer.len - 1; // do not include NUL |
| 2978 | |
| 2979 | G.use_stdin = (l->len != 0); |
| 2980 | return G.use_stdin; |
| 2981 | } |
| 2982 | |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 2983 | static BC_STATUS zbc_lex_next(BcLex *l) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2984 | { |
| 2985 | BcStatus s; |
| 2986 | |
| 2987 | l->t.last = l->t.t; |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 2988 | if (l->t.last == BC_LEX_EOF) RETURN_STATUS(bc_error("end of file")); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2989 | |
| 2990 | l->line += l->newline; |
Denys Vlasenko | 5318f81 | 2018-12-05 17:48:01 +0100 | [diff] [blame] | 2991 | G.err_line = l->line; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2992 | |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 2993 | l->t.t = BC_LEX_EOF; |
| 2994 | //this NL handling is bogus |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 2995 | l->newline = (l->i == l->len); |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 2996 | if (l->newline) { |
| 2997 | if (!G.use_stdin || !bc_lex_more_input(l)) |
| 2998 | RETURN_STATUS(BC_STATUS_SUCCESS); |
| 2999 | // here it's guaranteed that l->i is below l->len |
| 3000 | l->newline = false; |
| 3001 | } |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3002 | |
| 3003 | // Loop until failure or we don't have whitespace. This |
| 3004 | // is so the parser doesn't get inundated with whitespace. |
Denys Vlasenko | 9dc5d08 | 2018-12-16 18:43:51 +0100 | [diff] [blame] | 3005 | // Comments are also BC_LEX_WHITESPACE tokens and eaten here. |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 3006 | s = BC_STATUS_SUCCESS; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3007 | do { |
Denys Vlasenko | 2ea53a4 | 2018-12-14 17:51:17 +0100 | [diff] [blame] | 3008 | dbg_lex("next string to parse:'%.*s'", |
Denys Vlasenko | 0a23814 | 2018-12-14 16:48:34 +0100 | [diff] [blame] | 3009 | (int)(strchrnul(l->buf + l->i, '\n') - (l->buf + l->i)), |
| 3010 | l->buf + l->i); |
Denys Vlasenko | c2265f5 | 2018-12-12 23:10:08 +0100 | [diff] [blame] | 3011 | ERROR_RETURN(s =) zcommon_lex_token(l); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3012 | } while (!s && l->t.t == BC_LEX_WHITESPACE); |
Denys Vlasenko | 17df882 | 2018-12-14 23:00:24 +0100 | [diff] [blame] | 3013 | dbg_lex("l->t.t from string:%d", l->t.t); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3014 | |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 3015 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3016 | } |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 3017 | #if ERRORS_ARE_FATAL |
| 3018 | # define zbc_lex_next(...) (zbc_lex_next(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 3019 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3020 | |
Denys Vlasenko | 202dd19 | 2018-12-16 17:30:35 +0100 | [diff] [blame] | 3021 | static BC_STATUS zbc_lex_skip_if_at_NLINE(BcLex *l) |
| 3022 | { |
| 3023 | if (l->t.t == BC_LEX_NLINE) |
| 3024 | RETURN_STATUS(zbc_lex_next(l)); |
| 3025 | RETURN_STATUS(BC_STATUS_SUCCESS); |
| 3026 | } |
| 3027 | #if ERRORS_ARE_FATAL |
| 3028 | # define zbc_lex_skip_if_at_NLINE(...) (zbc_lex_skip_if_at_NLINE(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 3029 | #endif |
| 3030 | |
| 3031 | static BC_STATUS zbc_lex_next_and_skip_NLINE(BcLex *l) |
| 3032 | { |
| 3033 | BcStatus s; |
| 3034 | s = zbc_lex_next(l); |
| 3035 | if (s) RETURN_STATUS(s); |
| 3036 | // if(cond)<newline>stmt is accepted too (but not 2+ newlines) |
| 3037 | s = zbc_lex_skip_if_at_NLINE(l); |
| 3038 | RETURN_STATUS(s); |
| 3039 | } |
| 3040 | #if ERRORS_ARE_FATAL |
| 3041 | # define zbc_lex_next_and_skip_NLINE(...) (zbc_lex_next_and_skip_NLINE(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 3042 | #endif |
| 3043 | |
Denys Vlasenko | 2ea53a4 | 2018-12-14 17:51:17 +0100 | [diff] [blame] | 3044 | static BC_STATUS zbc_lex_text_init(BcLex *l, const char *text) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3045 | { |
| 3046 | l->buf = text; |
| 3047 | l->i = 0; |
| 3048 | l->len = strlen(text); |
| 3049 | l->t.t = l->t.last = BC_LEX_INVALID; |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 3050 | RETURN_STATUS(zbc_lex_next(l)); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3051 | } |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 3052 | #if ERRORS_ARE_FATAL |
Denys Vlasenko | 2ea53a4 | 2018-12-14 17:51:17 +0100 | [diff] [blame] | 3053 | # define zbc_lex_text_init(...) (zbc_lex_text_init(__VA_ARGS__), BC_STATUS_SUCCESS) |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 3054 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3055 | |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 3056 | #if ENABLE_BC |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 3057 | static BC_STATUS zbc_lex_identifier(BcLex *l) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3058 | { |
| 3059 | BcStatus s; |
Denys Vlasenko | 51fb8aa | 2018-12-05 00:22:34 +0100 | [diff] [blame] | 3060 | unsigned i; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3061 | const char *buf = l->buf + l->i - 1; |
| 3062 | |
Denys Vlasenko | 51fb8aa | 2018-12-05 00:22:34 +0100 | [diff] [blame] | 3063 | for (i = 0; i < ARRAY_SIZE(bc_lex_kws); ++i) { |
| 3064 | const char *keyword8 = bc_lex_kws[i].name8; |
| 3065 | unsigned j = 0; |
| 3066 | while (buf[j] != '\0' && buf[j] == keyword8[j]) { |
| 3067 | j++; |
| 3068 | if (j == 8) goto match; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3069 | } |
Denys Vlasenko | 51fb8aa | 2018-12-05 00:22:34 +0100 | [diff] [blame] | 3070 | if (keyword8[j] != '\0') |
| 3071 | continue; |
| 3072 | match: |
| 3073 | // buf starts with keyword bc_lex_kws[i] |
| 3074 | l->t.t = BC_LEX_KEY_1st_keyword + i; |
Denys Vlasenko | d00d2f9 | 2018-12-06 12:59:40 +0100 | [diff] [blame] | 3075 | if (!bc_lex_kws_POSIX(i)) { |
Denys Vlasenko | 0d7e46b | 2018-12-05 18:31:19 +0100 | [diff] [blame] | 3076 | s = bc_posix_error_fmt("%sthe '%.8s' keyword", "POSIX does not allow ", bc_lex_kws[i].name8); |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 3077 | ERROR_RETURN(if (s) RETURN_STATUS(s);) |
Denys Vlasenko | 51fb8aa | 2018-12-05 00:22:34 +0100 | [diff] [blame] | 3078 | } |
| 3079 | |
| 3080 | // We minus 1 because the index has already been incremented. |
| 3081 | l->i += j - 1; |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 3082 | RETURN_STATUS(BC_STATUS_SUCCESS); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3083 | } |
| 3084 | |
Denys Vlasenko | 88cfea6 | 2018-12-10 20:26:04 +0100 | [diff] [blame] | 3085 | bc_lex_name(l); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3086 | |
Denys Vlasenko | 0d7e46b | 2018-12-05 18:31:19 +0100 | [diff] [blame] | 3087 | if (l->t.v.len > 2) { |
| 3088 | // Prevent this: |
| 3089 | // >>> qwe=1 |
| 3090 | // bc: POSIX only allows one character names; the following is bad: 'qwe=1 |
| 3091 | // ' |
| 3092 | unsigned len = strchrnul(buf, '\n') - buf; |
| 3093 | s = bc_posix_error_fmt("POSIX only allows one character names; the following is bad: '%.*s'", len, buf); |
| 3094 | } |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3095 | |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 3096 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3097 | } |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 3098 | #if ERRORS_ARE_FATAL |
| 3099 | # define zbc_lex_identifier(...) (zbc_lex_identifier(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 3100 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3101 | |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3102 | static BC_STATUS zbc_lex_string(BcLex *l) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3103 | { |
| 3104 | size_t len, nls = 0, i = l->i; |
| 3105 | char c; |
| 3106 | |
| 3107 | l->t.t = BC_LEX_STR; |
| 3108 | |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3109 | for (c = l->buf[i]; c != 0 && c != '"'; c = l->buf[++i]) |
| 3110 | nls += (c == '\n'); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3111 | |
| 3112 | if (c == '\0') { |
| 3113 | l->i = i; |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3114 | RETURN_STATUS(bc_error("string end could not be found")); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3115 | } |
| 3116 | |
| 3117 | len = i - l->i; |
Denys Vlasenko | 64074a1 | 2018-12-07 15:50:14 +0100 | [diff] [blame] | 3118 | // This check makes sense only if size_t is (much) larger than BC_MAX_STRING. |
| 3119 | if (SIZE_MAX > (BC_MAX_STRING | 0xff)) { |
| 3120 | if (len > BC_MAX_STRING) |
Denys Vlasenko | 9811ad0 | 2018-12-12 23:25:13 +0100 | [diff] [blame] | 3121 | RETURN_STATUS(bc_error("string too long: must be [1,"BC_MAX_STRING_STR"]")); |
Denys Vlasenko | 64074a1 | 2018-12-07 15:50:14 +0100 | [diff] [blame] | 3122 | } |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3123 | bc_vec_string(&l->t.v, len, l->buf + l->i); |
| 3124 | |
| 3125 | l->i = i + 1; |
| 3126 | l->line += nls; |
Denys Vlasenko | 5318f81 | 2018-12-05 17:48:01 +0100 | [diff] [blame] | 3127 | G.err_line = l->line; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3128 | |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3129 | RETURN_STATUS(BC_STATUS_SUCCESS); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3130 | } |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3131 | #if ERRORS_ARE_FATAL |
| 3132 | # define zbc_lex_string(...) (zbc_lex_string(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 3133 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3134 | |
Denys Vlasenko | 0a23814 | 2018-12-14 16:48:34 +0100 | [diff] [blame] | 3135 | static void bc_lex_assign(BcLex *l, unsigned with_and_without) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3136 | { |
| 3137 | if (l->buf[l->i] == '=') { |
| 3138 | ++l->i; |
Denys Vlasenko | 0a23814 | 2018-12-14 16:48:34 +0100 | [diff] [blame] | 3139 | with_and_without >>= 8; // store "with" value |
| 3140 | } // else store "without" value |
| 3141 | l->t.t = (with_and_without & 0xff); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3142 | } |
Denys Vlasenko | 0a23814 | 2018-12-14 16:48:34 +0100 | [diff] [blame] | 3143 | #define bc_lex_assign(l, with, without) \ |
| 3144 | bc_lex_assign(l, ((with)<<8)|(without)) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3145 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 3146 | static BC_STATUS zbc_lex_comment(BcLex *l) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3147 | { |
| 3148 | size_t i, nls = 0; |
| 3149 | const char *buf = l->buf; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3150 | |
| 3151 | l->t.t = BC_LEX_WHITESPACE; |
Denys Vlasenko | 9dc5d08 | 2018-12-16 18:43:51 +0100 | [diff] [blame] | 3152 | i = l->i; /* here buf[l->i] is the '*' of opening comment delimiter */ |
Denys Vlasenko | bc5ce66 | 2018-12-03 19:12:29 +0100 | [diff] [blame] | 3153 | for (;;) { |
Denys Vlasenko | 9dc5d08 | 2018-12-16 18:43:51 +0100 | [diff] [blame] | 3154 | char c = buf[++i]; |
Denys Vlasenko | bc5ce66 | 2018-12-03 19:12:29 +0100 | [diff] [blame] | 3155 | check_star: |
| 3156 | if (c == '*') { |
| 3157 | c = buf[++i]; |
| 3158 | if (c == '/') |
| 3159 | break; |
| 3160 | goto check_star; |
| 3161 | } |
| 3162 | if (c == '\0') { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3163 | l->i = i; |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 3164 | RETURN_STATUS(bc_error("comment end could not be found")); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3165 | } |
Denys Vlasenko | bc5ce66 | 2018-12-03 19:12:29 +0100 | [diff] [blame] | 3166 | nls += (c == '\n'); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3167 | } |
| 3168 | |
Denys Vlasenko | bc5ce66 | 2018-12-03 19:12:29 +0100 | [diff] [blame] | 3169 | l->i = i + 1; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3170 | l->line += nls; |
Denys Vlasenko | 5318f81 | 2018-12-05 17:48:01 +0100 | [diff] [blame] | 3171 | G.err_line = l->line; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3172 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 3173 | RETURN_STATUS(BC_STATUS_SUCCESS); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3174 | } |
Denys Vlasenko | 628bf1b | 2018-12-10 20:41:05 +0100 | [diff] [blame] | 3175 | #if ERRORS_ARE_FATAL |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 3176 | # define zbc_lex_comment(...) (zbc_lex_comment(__VA_ARGS__), BC_STATUS_SUCCESS) |
Denys Vlasenko | 628bf1b | 2018-12-10 20:41:05 +0100 | [diff] [blame] | 3177 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3178 | |
Denys Vlasenko | c2265f5 | 2018-12-12 23:10:08 +0100 | [diff] [blame] | 3179 | static BC_STATUS zbc_lex_token(BcLex *l) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3180 | { |
| 3181 | BcStatus s = BC_STATUS_SUCCESS; |
| 3182 | char c = l->buf[l->i++], c2; |
| 3183 | |
| 3184 | // This is the workhorse of the lexer. |
| 3185 | switch (c) { |
Denys Vlasenko | 9dc5d08 | 2018-12-16 18:43:51 +0100 | [diff] [blame] | 3186 | case '\0': // probably never reached |
| 3187 | l->i--; |
| 3188 | l->t.t = BC_LEX_EOF; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3189 | l->newline = true; |
Denys Vlasenko | 9dc5d08 | 2018-12-16 18:43:51 +0100 | [diff] [blame] | 3190 | break; |
| 3191 | case '\n': |
| 3192 | l->t.t = BC_LEX_NLINE; |
| 3193 | l->newline = true; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3194 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3195 | case '\t': |
| 3196 | case '\v': |
| 3197 | case '\f': |
| 3198 | case '\r': |
| 3199 | case ' ': |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3200 | bc_lex_whitespace(l); |
| 3201 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3202 | case '!': |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3203 | bc_lex_assign(l, BC_LEX_OP_REL_NE, BC_LEX_OP_BOOL_NOT); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3204 | if (l->t.t == BC_LEX_OP_BOOL_NOT) { |
Denys Vlasenko | 0064679 | 2018-12-05 18:12:27 +0100 | [diff] [blame] | 3205 | s = bc_POSIX_does_not_allow_bool_ops_this_is_bad("!"); |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 3206 | ERROR_RETURN(if (s) RETURN_STATUS(s);) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3207 | } |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3208 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3209 | case '"': |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3210 | s = zbc_lex_string(l); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3211 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3212 | case '#': |
Denys Vlasenko | 0064679 | 2018-12-05 18:12:27 +0100 | [diff] [blame] | 3213 | s = bc_POSIX_does_not_allow("'#' script comments"); |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 3214 | ERROR_RETURN(if (s) RETURN_STATUS(s);) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3215 | bc_lex_lineComment(l); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3216 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3217 | case '%': |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3218 | bc_lex_assign(l, BC_LEX_OP_ASSIGN_MODULUS, BC_LEX_OP_MODULUS); |
| 3219 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3220 | case '&': |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3221 | c2 = l->buf[l->i]; |
| 3222 | if (c2 == '&') { |
Denys Vlasenko | 0064679 | 2018-12-05 18:12:27 +0100 | [diff] [blame] | 3223 | s = bc_POSIX_does_not_allow_bool_ops_this_is_bad("&&"); |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 3224 | ERROR_RETURN(if (s) RETURN_STATUS(s);) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3225 | ++l->i; |
| 3226 | l->t.t = BC_LEX_OP_BOOL_AND; |
Denys Vlasenko | 12b9eaf | 2018-12-11 23:50:14 +0100 | [diff] [blame] | 3227 | } else { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3228 | l->t.t = BC_LEX_INVALID; |
Denys Vlasenko | 24fb2cd | 2018-12-05 16:03:46 +0100 | [diff] [blame] | 3229 | s = bc_error_bad_character('&'); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3230 | } |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3231 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3232 | case '(': |
| 3233 | case ')': |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3234 | l->t.t = (BcLexType)(c - '(' + BC_LEX_LPAREN); |
| 3235 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3236 | case '*': |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3237 | bc_lex_assign(l, BC_LEX_OP_ASSIGN_MULTIPLY, BC_LEX_OP_MULTIPLY); |
| 3238 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3239 | case '+': |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3240 | c2 = l->buf[l->i]; |
| 3241 | if (c2 == '+') { |
| 3242 | ++l->i; |
| 3243 | l->t.t = BC_LEX_OP_INC; |
Denys Vlasenko | 12b9eaf | 2018-12-11 23:50:14 +0100 | [diff] [blame] | 3244 | } else |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3245 | bc_lex_assign(l, BC_LEX_OP_ASSIGN_PLUS, BC_LEX_OP_PLUS); |
| 3246 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3247 | case ',': |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3248 | l->t.t = BC_LEX_COMMA; |
| 3249 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3250 | case '-': |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3251 | c2 = l->buf[l->i]; |
| 3252 | if (c2 == '-') { |
| 3253 | ++l->i; |
| 3254 | l->t.t = BC_LEX_OP_DEC; |
Denys Vlasenko | 12b9eaf | 2018-12-11 23:50:14 +0100 | [diff] [blame] | 3255 | } else |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3256 | bc_lex_assign(l, BC_LEX_OP_ASSIGN_MINUS, BC_LEX_OP_MINUS); |
| 3257 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3258 | case '.': |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3259 | if (isdigit(l->buf[l->i])) |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 3260 | s = zbc_lex_number(l, c); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3261 | else { |
| 3262 | l->t.t = BC_LEX_KEY_LAST; |
Denys Vlasenko | 0064679 | 2018-12-05 18:12:27 +0100 | [diff] [blame] | 3263 | s = bc_POSIX_does_not_allow("a period ('.') as a shortcut for the last result"); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3264 | } |
| 3265 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3266 | case '/': |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3267 | c2 = l->buf[l->i]; |
| 3268 | if (c2 == '*') |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 3269 | s = zbc_lex_comment(l); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3270 | else |
| 3271 | bc_lex_assign(l, BC_LEX_OP_ASSIGN_DIVIDE, BC_LEX_OP_DIVIDE); |
| 3272 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3273 | case '0': |
| 3274 | case '1': |
| 3275 | case '2': |
| 3276 | case '3': |
| 3277 | case '4': |
| 3278 | case '5': |
| 3279 | case '6': |
| 3280 | case '7': |
| 3281 | case '8': |
| 3282 | case '9': |
| 3283 | case 'A': |
| 3284 | case 'B': |
| 3285 | case 'C': |
| 3286 | case 'D': |
| 3287 | case 'E': |
| 3288 | case 'F': |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 3289 | s = zbc_lex_number(l, c); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3290 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3291 | case ';': |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3292 | l->t.t = BC_LEX_SCOLON; |
| 3293 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3294 | case '<': |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3295 | bc_lex_assign(l, BC_LEX_OP_REL_LE, BC_LEX_OP_REL_LT); |
| 3296 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3297 | case '=': |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3298 | bc_lex_assign(l, BC_LEX_OP_REL_EQ, BC_LEX_OP_ASSIGN); |
| 3299 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3300 | case '>': |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3301 | bc_lex_assign(l, BC_LEX_OP_REL_GE, BC_LEX_OP_REL_GT); |
| 3302 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3303 | case '[': |
| 3304 | case ']': |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3305 | l->t.t = (BcLexType)(c - '[' + BC_LEX_LBRACKET); |
| 3306 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3307 | case '\\': |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3308 | if (l->buf[l->i] == '\n') { |
| 3309 | l->t.t = BC_LEX_WHITESPACE; |
| 3310 | ++l->i; |
Denys Vlasenko | 12b9eaf | 2018-12-11 23:50:14 +0100 | [diff] [blame] | 3311 | } else |
Denys Vlasenko | 24fb2cd | 2018-12-05 16:03:46 +0100 | [diff] [blame] | 3312 | s = bc_error_bad_character(c); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3313 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3314 | case '^': |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3315 | bc_lex_assign(l, BC_LEX_OP_ASSIGN_POWER, BC_LEX_OP_POWER); |
| 3316 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3317 | case 'a': |
| 3318 | case 'b': |
| 3319 | case 'c': |
| 3320 | case 'd': |
| 3321 | case 'e': |
| 3322 | case 'f': |
| 3323 | case 'g': |
| 3324 | case 'h': |
| 3325 | case 'i': |
| 3326 | case 'j': |
| 3327 | case 'k': |
| 3328 | case 'l': |
| 3329 | case 'm': |
| 3330 | case 'n': |
| 3331 | case 'o': |
| 3332 | case 'p': |
| 3333 | case 'q': |
| 3334 | case 'r': |
| 3335 | case 's': |
| 3336 | case 't': |
| 3337 | case 'u': |
| 3338 | case 'v': |
| 3339 | case 'w': |
| 3340 | case 'x': |
| 3341 | case 'y': |
| 3342 | case 'z': |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 3343 | s = zbc_lex_identifier(l); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3344 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3345 | case '{': |
| 3346 | case '}': |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3347 | l->t.t = (BcLexType)(c - '{' + BC_LEX_LBRACE); |
| 3348 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3349 | case '|': |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3350 | c2 = l->buf[l->i]; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3351 | if (c2 == '|') { |
Denys Vlasenko | 0064679 | 2018-12-05 18:12:27 +0100 | [diff] [blame] | 3352 | s = bc_POSIX_does_not_allow_bool_ops_this_is_bad("||"); |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 3353 | ERROR_RETURN(if (s) RETURN_STATUS(s);) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3354 | ++l->i; |
| 3355 | l->t.t = BC_LEX_OP_BOOL_OR; |
Denys Vlasenko | 12b9eaf | 2018-12-11 23:50:14 +0100 | [diff] [blame] | 3356 | } else { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3357 | l->t.t = BC_LEX_INVALID; |
Denys Vlasenko | 24fb2cd | 2018-12-05 16:03:46 +0100 | [diff] [blame] | 3358 | s = bc_error_bad_character(c); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3359 | } |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3360 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3361 | default: |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3362 | l->t.t = BC_LEX_INVALID; |
Denys Vlasenko | 24fb2cd | 2018-12-05 16:03:46 +0100 | [diff] [blame] | 3363 | s = bc_error_bad_character(c); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3364 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3365 | } |
| 3366 | |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 3367 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3368 | } |
| 3369 | #endif // ENABLE_BC |
| 3370 | |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 3371 | #if ENABLE_DC |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 3372 | static BC_STATUS zdc_lex_register(BcLex *l) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3373 | { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3374 | if (isspace(l->buf[l->i - 1])) { |
| 3375 | bc_lex_whitespace(l); |
| 3376 | ++l->i; |
Denys Vlasenko | 6d9146a | 2018-12-02 15:48:37 +0100 | [diff] [blame] | 3377 | if (!G_exreg) |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 3378 | RETURN_STATUS(bc_error("extended register")); |
| 3379 | bc_lex_name(l); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3380 | } |
| 3381 | else { |
Denys Vlasenko | 7d62801 | 2018-12-04 21:46:47 +0100 | [diff] [blame] | 3382 | bc_vec_pop_all(&l->t.v); |
Denys Vlasenko | e55a572 | 2018-12-06 12:47:17 +0100 | [diff] [blame] | 3383 | bc_vec_push(&l->t.v, &l->buf[l->i - 1]); |
Denys Vlasenko | 08c033c | 2018-12-05 16:55:08 +0100 | [diff] [blame] | 3384 | bc_vec_pushZeroByte(&l->t.v); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3385 | l->t.t = BC_LEX_NAME; |
| 3386 | } |
| 3387 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 3388 | RETURN_STATUS(BC_STATUS_SUCCESS); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3389 | } |
Denys Vlasenko | 88cfea6 | 2018-12-10 20:26:04 +0100 | [diff] [blame] | 3390 | #if ERRORS_ARE_FATAL |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 3391 | # define zdc_lex_register(...) (zdc_lex_register(__VA_ARGS__), BC_STATUS_SUCCESS) |
Denys Vlasenko | 88cfea6 | 2018-12-10 20:26:04 +0100 | [diff] [blame] | 3392 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3393 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 3394 | static BC_STATUS zdc_lex_string(BcLex *l) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3395 | { |
| 3396 | size_t depth = 1, nls = 0, i = l->i; |
| 3397 | char c; |
| 3398 | |
| 3399 | l->t.t = BC_LEX_STR; |
Denys Vlasenko | 7d62801 | 2018-12-04 21:46:47 +0100 | [diff] [blame] | 3400 | bc_vec_pop_all(&l->t.v); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3401 | |
| 3402 | for (c = l->buf[i]; c != 0 && depth; c = l->buf[++i]) { |
| 3403 | |
| 3404 | depth += (c == '[' && (i == l->i || l->buf[i - 1] != '\\')); |
| 3405 | depth -= (c == ']' && (i == l->i || l->buf[i - 1] != '\\')); |
| 3406 | nls += (c == '\n'); |
| 3407 | |
| 3408 | if (depth) bc_vec_push(&l->t.v, &c); |
| 3409 | } |
| 3410 | |
| 3411 | if (c == '\0') { |
| 3412 | l->i = i; |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 3413 | RETURN_STATUS(bc_error("string end could not be found")); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3414 | } |
| 3415 | |
Denys Vlasenko | 08c033c | 2018-12-05 16:55:08 +0100 | [diff] [blame] | 3416 | bc_vec_pushZeroByte(&l->t.v); |
Denys Vlasenko | 64074a1 | 2018-12-07 15:50:14 +0100 | [diff] [blame] | 3417 | // This check makes sense only if size_t is (much) larger than BC_MAX_STRING. |
| 3418 | if (SIZE_MAX > (BC_MAX_STRING | 0xff)) { |
| 3419 | if (i - l->i > BC_MAX_STRING) |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 3420 | RETURN_STATUS(bc_error("string too long: must be [1,"BC_MAX_STRING_STR"]")); |
Denys Vlasenko | 64074a1 | 2018-12-07 15:50:14 +0100 | [diff] [blame] | 3421 | } |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3422 | |
| 3423 | l->i = i; |
| 3424 | l->line += nls; |
Denys Vlasenko | 5318f81 | 2018-12-05 17:48:01 +0100 | [diff] [blame] | 3425 | G.err_line = l->line; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3426 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 3427 | RETURN_STATUS(BC_STATUS_SUCCESS); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3428 | } |
Denys Vlasenko | 88cfea6 | 2018-12-10 20:26:04 +0100 | [diff] [blame] | 3429 | #if ERRORS_ARE_FATAL |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 3430 | # define zdc_lex_string(...) (zdc_lex_string(__VA_ARGS__), BC_STATUS_SUCCESS) |
Denys Vlasenko | 88cfea6 | 2018-12-10 20:26:04 +0100 | [diff] [blame] | 3431 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3432 | |
Denys Vlasenko | c2265f5 | 2018-12-12 23:10:08 +0100 | [diff] [blame] | 3433 | static BC_STATUS zdc_lex_token(BcLex *l) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3434 | { |
| 3435 | BcStatus s = BC_STATUS_SUCCESS; |
| 3436 | char c = l->buf[l->i++], c2; |
| 3437 | size_t i; |
| 3438 | |
Denys Vlasenko | 51fb8aa | 2018-12-05 00:22:34 +0100 | [diff] [blame] | 3439 | for (i = 0; i < ARRAY_SIZE(dc_lex_regs); ++i) { |
| 3440 | if (l->t.last == dc_lex_regs[i]) |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 3441 | RETURN_STATUS(zdc_lex_register(l)); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3442 | } |
| 3443 | |
Denys Vlasenko | 12b9eaf | 2018-12-11 23:50:14 +0100 | [diff] [blame] | 3444 | if (c >= '%' && c <= '~' |
| 3445 | && (l->t.t = dc_lex_tokens[(c - '%')]) != BC_LEX_INVALID |
| 3446 | ) { |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 3447 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3448 | } |
| 3449 | |
| 3450 | // This is the workhorse of the lexer. |
| 3451 | switch (c) { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3452 | case '\0': |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3453 | l->t.t = BC_LEX_EOF; |
| 3454 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3455 | case '\n': |
| 3456 | case '\t': |
| 3457 | case '\v': |
| 3458 | case '\f': |
| 3459 | case '\r': |
| 3460 | case ' ': |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3461 | l->newline = (c == '\n'); |
| 3462 | bc_lex_whitespace(l); |
| 3463 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3464 | case '!': |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3465 | c2 = l->buf[l->i]; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3466 | if (c2 == '=') |
| 3467 | l->t.t = BC_LEX_OP_REL_NE; |
| 3468 | else if (c2 == '<') |
| 3469 | l->t.t = BC_LEX_OP_REL_LE; |
| 3470 | else if (c2 == '>') |
| 3471 | l->t.t = BC_LEX_OP_REL_GE; |
| 3472 | else |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 3473 | RETURN_STATUS(bc_error_bad_character(c)); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3474 | ++l->i; |
| 3475 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3476 | case '#': |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3477 | bc_lex_lineComment(l); |
| 3478 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3479 | case '.': |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3480 | if (isdigit(l->buf[l->i])) |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 3481 | s = zbc_lex_number(l, c); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3482 | else |
Denys Vlasenko | 24fb2cd | 2018-12-05 16:03:46 +0100 | [diff] [blame] | 3483 | s = bc_error_bad_character(c); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3484 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3485 | case '0': |
| 3486 | case '1': |
| 3487 | case '2': |
| 3488 | case '3': |
| 3489 | case '4': |
| 3490 | case '5': |
| 3491 | case '6': |
| 3492 | case '7': |
| 3493 | case '8': |
| 3494 | case '9': |
| 3495 | case 'A': |
| 3496 | case 'B': |
| 3497 | case 'C': |
| 3498 | case 'D': |
| 3499 | case 'E': |
| 3500 | case 'F': |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 3501 | s = zbc_lex_number(l, c); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3502 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3503 | case '[': |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 3504 | s = zdc_lex_string(l); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3505 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3506 | default: |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3507 | l->t.t = BC_LEX_INVALID; |
Denys Vlasenko | 24fb2cd | 2018-12-05 16:03:46 +0100 | [diff] [blame] | 3508 | s = bc_error_bad_character(c); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3509 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3510 | } |
| 3511 | |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 3512 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3513 | } |
| 3514 | #endif // ENABLE_DC |
| 3515 | |
Denys Vlasenko | b6f6086 | 2018-12-06 12:54:26 +0100 | [diff] [blame] | 3516 | static void bc_program_addFunc(char *name, size_t *idx); |
| 3517 | |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3518 | static void bc_parse_addFunc(BcParse *p, char *name, size_t *idx) |
| 3519 | { |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 3520 | bc_program_addFunc(name, idx); |
Denys Vlasenko | 8fa1e8e | 2018-12-09 00:03:57 +0100 | [diff] [blame] | 3521 | p->func = bc_program_func(p->fidx); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3522 | } |
| 3523 | |
Denys Vlasenko | 2ea53a4 | 2018-12-14 17:51:17 +0100 | [diff] [blame] | 3524 | static void bc_parse_push(BcParse *p, char i) |
| 3525 | { |
| 3526 | dbg_lex("%s:%d pushing opcode %d", __func__, __LINE__, i); |
| 3527 | bc_vec_pushByte(&p->func->code, i); |
| 3528 | } |
Denys Vlasenko | b23ac51 | 2018-12-06 13:10:56 +0100 | [diff] [blame] | 3529 | |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3530 | static void bc_parse_pushName(BcParse *p, char *name) |
| 3531 | { |
Denys Vlasenko | e6c40c4 | 2018-12-16 20:32:58 +0100 | [diff] [blame] | 3532 | while (*name) |
| 3533 | bc_parse_push(p, *name++); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3534 | bc_parse_push(p, BC_PARSE_STREND); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3535 | } |
| 3536 | |
| 3537 | static void bc_parse_pushIndex(BcParse *p, size_t idx) |
| 3538 | { |
Denys Vlasenko | c2da68e | 2018-12-12 16:44:34 +0100 | [diff] [blame] | 3539 | size_t mask; |
| 3540 | unsigned amt; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3541 | |
Denys Vlasenko | 2ea53a4 | 2018-12-14 17:51:17 +0100 | [diff] [blame] | 3542 | dbg_lex("%s:%d pushing index %d", __func__, __LINE__, idx); |
Denys Vlasenko | c2da68e | 2018-12-12 16:44:34 +0100 | [diff] [blame] | 3543 | mask = ((size_t)0xff) << (sizeof(idx) * 8 - 8); |
| 3544 | amt = sizeof(idx); |
| 3545 | do { |
| 3546 | if (idx & mask) break; |
| 3547 | mask >>= 8; |
| 3548 | amt--; |
| 3549 | } while (amt != 0); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3550 | |
| 3551 | bc_parse_push(p, amt); |
Denys Vlasenko | c2da68e | 2018-12-12 16:44:34 +0100 | [diff] [blame] | 3552 | |
| 3553 | while (idx != 0) { |
| 3554 | bc_parse_push(p, (unsigned char)idx); |
| 3555 | idx >>= 8; |
| 3556 | } |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3557 | } |
| 3558 | |
Denys Vlasenko | 9dc5d08 | 2018-12-16 18:43:51 +0100 | [diff] [blame] | 3559 | static void bc_parse_number(BcParse *p) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3560 | { |
| 3561 | char *num = xstrdup(p->l.t.v.v); |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 3562 | size_t idx = G.prog.consts.len; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3563 | |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 3564 | bc_vec_push(&G.prog.consts, &num); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3565 | |
| 3566 | bc_parse_push(p, BC_INST_NUM); |
| 3567 | bc_parse_pushIndex(p, idx); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3568 | } |
| 3569 | |
Denys Vlasenko | 99b3762 | 2018-12-15 20:06:59 +0100 | [diff] [blame] | 3570 | IF_BC(static BC_STATUS zbc_parse_stmt_or_funcdef(BcParse *p);) |
Denys Vlasenko | e755e30 | 2018-12-13 22:25:28 +0100 | [diff] [blame] | 3571 | IF_DC(static BC_STATUS zdc_parse_parse(BcParse *p);) |
Denys Vlasenko | c0ef23c | 2018-12-12 23:03:10 +0100 | [diff] [blame] | 3572 | |
| 3573 | static BC_STATUS zcommon_parse(BcParse *p) |
| 3574 | { |
| 3575 | if (IS_BC) { |
Denys Vlasenko | 99b3762 | 2018-12-15 20:06:59 +0100 | [diff] [blame] | 3576 | IF_BC(RETURN_STATUS(zbc_parse_stmt_or_funcdef(p));) |
Denys Vlasenko | c0ef23c | 2018-12-12 23:03:10 +0100 | [diff] [blame] | 3577 | } |
| 3578 | IF_DC(RETURN_STATUS(zdc_parse_parse(p));) |
| 3579 | } |
| 3580 | |
Denys Vlasenko | f86e960 | 2018-12-14 17:01:56 +0100 | [diff] [blame] | 3581 | static BC_STATUS zbc_parse_text_init(BcParse *p, const char *text) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3582 | { |
Denys Vlasenko | 8fa1e8e | 2018-12-09 00:03:57 +0100 | [diff] [blame] | 3583 | p->func = bc_program_func(p->fidx); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3584 | |
Denys Vlasenko | 2ea53a4 | 2018-12-14 17:51:17 +0100 | [diff] [blame] | 3585 | RETURN_STATUS(zbc_lex_text_init(&p->l, text)); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3586 | } |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3587 | #if ERRORS_ARE_FATAL |
Denys Vlasenko | f86e960 | 2018-12-14 17:01:56 +0100 | [diff] [blame] | 3588 | # define zbc_parse_text_init(...) (zbc_parse_text_init(__VA_ARGS__), BC_STATUS_SUCCESS) |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3589 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3590 | |
Denys Vlasenko | b6f6086 | 2018-12-06 12:54:26 +0100 | [diff] [blame] | 3591 | // Called when parsing or execution detects a failure, |
| 3592 | // resets execution structures. |
| 3593 | static void bc_program_reset(void) |
| 3594 | { |
| 3595 | BcFunc *f; |
| 3596 | BcInstPtr *ip; |
| 3597 | |
| 3598 | bc_vec_npop(&G.prog.stack, G.prog.stack.len - 1); |
| 3599 | bc_vec_pop_all(&G.prog.results); |
| 3600 | |
Denys Vlasenko | 8fa1e8e | 2018-12-09 00:03:57 +0100 | [diff] [blame] | 3601 | f = bc_program_func(0); |
Denys Vlasenko | b6f6086 | 2018-12-06 12:54:26 +0100 | [diff] [blame] | 3602 | ip = bc_vec_top(&G.prog.stack); |
| 3603 | ip->idx = f->code.len; |
| 3604 | } |
| 3605 | |
Denys Vlasenko | e55a572 | 2018-12-06 12:47:17 +0100 | [diff] [blame] | 3606 | #define bc_parse_updateFunc(p, f) \ |
Denys Vlasenko | 8fa1e8e | 2018-12-09 00:03:57 +0100 | [diff] [blame] | 3607 | ((p)->func = bc_program_func((p)->fidx = (f))) |
Denys Vlasenko | e55a572 | 2018-12-06 12:47:17 +0100 | [diff] [blame] | 3608 | |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3609 | // Called when zbc/zdc_parse_parse() detects a failure, |
Denys Vlasenko | d38af48 | 2018-12-04 19:11:02 +0100 | [diff] [blame] | 3610 | // resets parsing structures. |
| 3611 | static void bc_parse_reset(BcParse *p) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3612 | { |
| 3613 | if (p->fidx != BC_PROG_MAIN) { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3614 | p->func->nparams = 0; |
Denys Vlasenko | 7d62801 | 2018-12-04 21:46:47 +0100 | [diff] [blame] | 3615 | bc_vec_pop_all(&p->func->code); |
| 3616 | bc_vec_pop_all(&p->func->autos); |
| 3617 | bc_vec_pop_all(&p->func->labels); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3618 | |
| 3619 | bc_parse_updateFunc(p, BC_PROG_MAIN); |
| 3620 | } |
| 3621 | |
| 3622 | p->l.i = p->l.len; |
| 3623 | p->l.t.t = BC_LEX_EOF; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3624 | |
Denys Vlasenko | 7d62801 | 2018-12-04 21:46:47 +0100 | [diff] [blame] | 3625 | bc_vec_pop_all(&p->exits); |
| 3626 | bc_vec_pop_all(&p->conds); |
| 3627 | bc_vec_pop_all(&p->ops); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3628 | |
Denys Vlasenko | d38af48 | 2018-12-04 19:11:02 +0100 | [diff] [blame] | 3629 | bc_program_reset(); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3630 | } |
| 3631 | |
| 3632 | static void bc_parse_free(BcParse *p) |
| 3633 | { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3634 | bc_vec_free(&p->exits); |
| 3635 | bc_vec_free(&p->conds); |
| 3636 | bc_vec_free(&p->ops); |
| 3637 | bc_lex_free(&p->l); |
| 3638 | } |
| 3639 | |
Denys Vlasenko | c2265f5 | 2018-12-12 23:10:08 +0100 | [diff] [blame] | 3640 | static void bc_parse_create(BcParse *p, size_t func) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3641 | { |
| 3642 | memset(p, 0, sizeof(BcParse)); |
| 3643 | |
Denys Vlasenko | c2265f5 | 2018-12-12 23:10:08 +0100 | [diff] [blame] | 3644 | bc_lex_init(&p->l); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3645 | bc_vec_init(&p->exits, sizeof(BcInstPtr), NULL); |
| 3646 | bc_vec_init(&p->conds, sizeof(size_t), NULL); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3647 | bc_vec_init(&p->ops, sizeof(BcLexType), NULL); |
| 3648 | |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3649 | bc_parse_updateFunc(p, func); |
| 3650 | } |
| 3651 | |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 3652 | #if ENABLE_BC |
Denys Vlasenko | cca79a0 | 2018-12-05 21:15:46 +0100 | [diff] [blame] | 3653 | |
| 3654 | #define BC_PARSE_TOP_OP(p) (*((BcLexType *) bc_vec_top(&(p)->ops))) |
| 3655 | #define BC_PARSE_LEAF(p, rparen) \ |
| 3656 | (((p) >= BC_INST_NUM && (p) <= BC_INST_SQRT) || (rparen) || \ |
| 3657 | (p) == BC_INST_INC_POST || (p) == BC_INST_DEC_POST) |
| 3658 | |
| 3659 | // We can calculate the conversion between tokens and exprs by subtracting the |
| 3660 | // position of the first operator in the lex enum and adding the position of the |
| 3661 | // first in the expr enum. Note: This only works for binary operators. |
Denys Vlasenko | 0154d78 | 2018-12-14 23:32:51 +0100 | [diff] [blame] | 3662 | #define BC_TOKEN_2_INST(t) ((char) ((t) - BC_LEX_NEG + BC_INST_NEG)) |
Denys Vlasenko | cca79a0 | 2018-12-05 21:15:46 +0100 | [diff] [blame] | 3663 | |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 3664 | static BC_STATUS zbc_parse_stmt_possibly_auto(BcParse *p, bool auto_allowed); |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 3665 | static BC_STATUS zbc_parse_expr(BcParse *p, uint8_t flags, BcParseNext next); |
Denys Vlasenko | 050b0fe | 2018-12-05 22:40:44 +0100 | [diff] [blame] | 3666 | static BcStatus bc_parse_expr_empty_ok(BcParse *p, uint8_t flags, BcParseNext next); |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 3667 | #if ERRORS_ARE_FATAL |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 3668 | # define zbc_parse_expr(...) (zbc_parse_expr(__VA_ARGS__), BC_STATUS_SUCCESS) |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 3669 | # defone zbc_parse_stmt_possibly_auto(...) (zbc_parse_stmt_possibly_auto(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 3670 | #endif |
| 3671 | |
| 3672 | static BC_STATUS zbc_parse_stmt(BcParse *p) |
| 3673 | { |
| 3674 | RETURN_STATUS(zbc_parse_stmt_possibly_auto(p, false)); |
| 3675 | } |
| 3676 | #if ERRORS_ARE_FATAL |
| 3677 | # define zbc_parse_stmt(...) (zbc_parse_stmt(__VA_ARGS__), BC_STATUS_SUCCESS) |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 3678 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3679 | |
Denys Vlasenko | cb18b54 | 2018-12-16 20:46:15 +0100 | [diff] [blame] | 3680 | static BC_STATUS zbc_parse_stmt_fail_if_bare_NLINE(BcParse *p, bool auto_allowed, const char *after_X) |
Denys Vlasenko | 2e8be02 | 2018-12-16 20:41:32 +0100 | [diff] [blame] | 3681 | { |
| 3682 | if (p->l.t.t == BC_LEX_NLINE) |
| 3683 | RETURN_STATUS(bc_error_fmt("no statement after '%s'", after_X)); |
Denys Vlasenko | cb18b54 | 2018-12-16 20:46:15 +0100 | [diff] [blame] | 3684 | RETURN_STATUS(zbc_parse_stmt_possibly_auto(p, auto_allowed)); |
Denys Vlasenko | 2e8be02 | 2018-12-16 20:41:32 +0100 | [diff] [blame] | 3685 | } |
| 3686 | #if ERRORS_ARE_FATAL |
Denys Vlasenko | cb18b54 | 2018-12-16 20:46:15 +0100 | [diff] [blame] | 3687 | # define zbc_parse_stmt_fail_if_bare_NLINE(...) (zbc_parse_stmt_fail_if_bare_NLINE(__VA_ARGS__), BC_STATUS_SUCCESS) |
Denys Vlasenko | 2e8be02 | 2018-12-16 20:41:32 +0100 | [diff] [blame] | 3688 | #endif |
| 3689 | |
Denys Vlasenko | 7b1df3d | 2018-12-14 23:12:48 +0100 | [diff] [blame] | 3690 | static void bc_parse_operator(BcParse *p, BcLexType type, size_t start, |
| 3691 | size_t *nexprs) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3692 | { |
Denys Vlasenko | 6543758 | 2018-12-05 19:37:19 +0100 | [diff] [blame] | 3693 | char l, r = bc_parse_op_PREC(type - BC_LEX_OP_INC); |
| 3694 | bool left = bc_parse_op_LEFT(type - BC_LEX_OP_INC); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3695 | |
| 3696 | while (p->ops.len > start) { |
Denys Vlasenko | 7b1df3d | 2018-12-14 23:12:48 +0100 | [diff] [blame] | 3697 | BcLexType t = BC_PARSE_TOP_OP(p); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3698 | if (t == BC_LEX_LPAREN) break; |
| 3699 | |
Denys Vlasenko | 6543758 | 2018-12-05 19:37:19 +0100 | [diff] [blame] | 3700 | l = bc_parse_op_PREC(t - BC_LEX_OP_INC); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3701 | if (l >= r && (l != r || !left)) break; |
| 3702 | |
Denys Vlasenko | 0154d78 | 2018-12-14 23:32:51 +0100 | [diff] [blame] | 3703 | bc_parse_push(p, BC_TOKEN_2_INST(t)); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3704 | bc_vec_pop(&p->ops); |
Denys Vlasenko | 7b1df3d | 2018-12-14 23:12:48 +0100 | [diff] [blame] | 3705 | *nexprs -= (t != BC_LEX_OP_BOOL_NOT && t != BC_LEX_NEG); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3706 | } |
| 3707 | |
| 3708 | bc_vec_push(&p->ops, &type); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3709 | } |
| 3710 | |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 3711 | static BC_STATUS zbc_parse_rightParen(BcParse *p, size_t ops_bgn, size_t *nexs) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3712 | { |
| 3713 | BcLexType top; |
| 3714 | |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 3715 | if (p->ops.len <= ops_bgn) |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 3716 | RETURN_STATUS(bc_error_bad_expression()); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3717 | top = BC_PARSE_TOP_OP(p); |
| 3718 | |
| 3719 | while (top != BC_LEX_LPAREN) { |
Denys Vlasenko | 0154d78 | 2018-12-14 23:32:51 +0100 | [diff] [blame] | 3720 | bc_parse_push(p, BC_TOKEN_2_INST(top)); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3721 | |
| 3722 | bc_vec_pop(&p->ops); |
| 3723 | *nexs -= top != BC_LEX_OP_BOOL_NOT && top != BC_LEX_NEG; |
| 3724 | |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 3725 | if (p->ops.len <= ops_bgn) |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 3726 | RETURN_STATUS(bc_error_bad_expression()); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3727 | top = BC_PARSE_TOP_OP(p); |
| 3728 | } |
| 3729 | |
| 3730 | bc_vec_pop(&p->ops); |
| 3731 | |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 3732 | RETURN_STATUS(zbc_lex_next(&p->l)); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3733 | } |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 3734 | #if ERRORS_ARE_FATAL |
| 3735 | # define zbc_parse_rightParen(...) (zbc_parse_rightParen(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 3736 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3737 | |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3738 | static BC_STATUS zbc_parse_params(BcParse *p, uint8_t flags) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3739 | { |
| 3740 | BcStatus s; |
| 3741 | bool comma = false; |
| 3742 | size_t nparams; |
| 3743 | |
Denys Vlasenko | 2ea53a4 | 2018-12-14 17:51:17 +0100 | [diff] [blame] | 3744 | dbg_lex("%s:%d p->l.t.t:%d", __func__, __LINE__, p->l.t.t); |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 3745 | s = zbc_lex_next(&p->l); |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3746 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3747 | |
| 3748 | for (nparams = 0; p->l.t.t != BC_LEX_RPAREN; ++nparams) { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3749 | flags = (flags & ~(BC_PARSE_PRINT | BC_PARSE_REL)) | BC_PARSE_ARRAY; |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 3750 | s = zbc_parse_expr(p, flags, bc_parse_next_param); |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3751 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3752 | |
| 3753 | comma = p->l.t.t == BC_LEX_COMMA; |
| 3754 | if (comma) { |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 3755 | s = zbc_lex_next(&p->l); |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3756 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3757 | } |
| 3758 | } |
| 3759 | |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3760 | if (comma) RETURN_STATUS(bc_error_bad_token()); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3761 | bc_parse_push(p, BC_INST_CALL); |
| 3762 | bc_parse_pushIndex(p, nparams); |
| 3763 | |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3764 | RETURN_STATUS(BC_STATUS_SUCCESS); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3765 | } |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3766 | #if ERRORS_ARE_FATAL |
| 3767 | # define zbc_parse_params(...) (zbc_parse_params(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 3768 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3769 | |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3770 | static BC_STATUS zbc_parse_call(BcParse *p, char *name, uint8_t flags) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3771 | { |
| 3772 | BcStatus s; |
| 3773 | BcId entry, *entry_ptr; |
| 3774 | size_t idx; |
| 3775 | |
| 3776 | entry.name = name; |
| 3777 | |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3778 | s = zbc_parse_params(p, flags); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3779 | if (s) goto err; |
| 3780 | |
| 3781 | if (p->l.t.t != BC_LEX_RPAREN) { |
Denys Vlasenko | 24fb2cd | 2018-12-05 16:03:46 +0100 | [diff] [blame] | 3782 | s = bc_error_bad_token(); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3783 | goto err; |
| 3784 | } |
| 3785 | |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 3786 | idx = bc_map_index(&G.prog.fn_map, &entry); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3787 | |
| 3788 | if (idx == BC_VEC_INVALID_IDX) { |
| 3789 | name = xstrdup(entry.name); |
| 3790 | bc_parse_addFunc(p, name, &idx); |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 3791 | idx = bc_map_index(&G.prog.fn_map, &entry); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3792 | free(entry.name); |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3793 | } else |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3794 | free(name); |
| 3795 | |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 3796 | entry_ptr = bc_vec_item(&G.prog.fn_map, idx); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3797 | bc_parse_pushIndex(p, entry_ptr->idx); |
| 3798 | |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3799 | RETURN_STATUS(zbc_lex_next(&p->l)); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3800 | |
| 3801 | err: |
| 3802 | free(name); |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3803 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3804 | } |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3805 | #if ERRORS_ARE_FATAL |
| 3806 | # define zbc_parse_call(...) (zbc_parse_call(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 3807 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3808 | |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3809 | static BC_STATUS zbc_parse_name(BcParse *p, BcInst *type, uint8_t flags) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3810 | { |
| 3811 | BcStatus s; |
| 3812 | char *name; |
| 3813 | |
| 3814 | name = xstrdup(p->l.t.v.v); |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 3815 | s = zbc_lex_next(&p->l); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3816 | if (s) goto err; |
| 3817 | |
| 3818 | if (p->l.t.t == BC_LEX_LBRACKET) { |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 3819 | s = zbc_lex_next(&p->l); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3820 | if (s) goto err; |
| 3821 | |
| 3822 | if (p->l.t.t == BC_LEX_RBRACKET) { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3823 | if (!(flags & BC_PARSE_ARRAY)) { |
Denys Vlasenko | 24fb2cd | 2018-12-05 16:03:46 +0100 | [diff] [blame] | 3824 | s = bc_error_bad_expression(); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3825 | goto err; |
| 3826 | } |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3827 | *type = BC_INST_ARRAY; |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3828 | } else { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3829 | *type = BC_INST_ARRAY_ELEM; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3830 | flags &= ~(BC_PARSE_PRINT | BC_PARSE_REL); |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 3831 | s = zbc_parse_expr(p, flags, bc_parse_next_elem); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3832 | if (s) goto err; |
| 3833 | } |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 3834 | s = zbc_lex_next(&p->l); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3835 | if (s) goto err; |
| 3836 | bc_parse_push(p, *type); |
| 3837 | bc_parse_pushName(p, name); |
Denys Vlasenko | e6c40c4 | 2018-12-16 20:32:58 +0100 | [diff] [blame] | 3838 | free(name); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3839 | } |
| 3840 | else if (p->l.t.t == BC_LEX_LPAREN) { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3841 | if (flags & BC_PARSE_NOCALL) { |
Denys Vlasenko | 24fb2cd | 2018-12-05 16:03:46 +0100 | [diff] [blame] | 3842 | s = bc_error_bad_token(); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3843 | goto err; |
| 3844 | } |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3845 | *type = BC_INST_CALL; |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3846 | s = zbc_parse_call(p, name, flags); |
| 3847 | } else { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3848 | *type = BC_INST_VAR; |
| 3849 | bc_parse_push(p, BC_INST_VAR); |
| 3850 | bc_parse_pushName(p, name); |
Denys Vlasenko | e6c40c4 | 2018-12-16 20:32:58 +0100 | [diff] [blame] | 3851 | free(name); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3852 | } |
| 3853 | |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3854 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3855 | |
| 3856 | err: |
| 3857 | free(name); |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3858 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3859 | } |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3860 | #if ERRORS_ARE_FATAL |
| 3861 | # define zbc_parse_name(...) (zbc_parse_name(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 3862 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3863 | |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 3864 | static BC_STATUS zbc_parse_read(BcParse *p) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3865 | { |
| 3866 | BcStatus s; |
| 3867 | |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 3868 | s = zbc_lex_next(&p->l); |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 3869 | if (s) RETURN_STATUS(s); |
| 3870 | if (p->l.t.t != BC_LEX_LPAREN) RETURN_STATUS(bc_error_bad_token()); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3871 | |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 3872 | s = zbc_lex_next(&p->l); |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 3873 | if (s) RETURN_STATUS(s); |
| 3874 | if (p->l.t.t != BC_LEX_RPAREN) RETURN_STATUS(bc_error_bad_token()); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3875 | |
| 3876 | bc_parse_push(p, BC_INST_READ); |
| 3877 | |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 3878 | RETURN_STATUS(zbc_lex_next(&p->l)); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3879 | } |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 3880 | #if ERRORS_ARE_FATAL |
| 3881 | # define zbc_parse_read(...) (zbc_parse_read(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 3882 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3883 | |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3884 | static BC_STATUS zbc_parse_builtin(BcParse *p, BcLexType type, uint8_t flags, |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3885 | BcInst *prev) |
| 3886 | { |
| 3887 | BcStatus s; |
| 3888 | |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 3889 | s = zbc_lex_next(&p->l); |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3890 | if (s) RETURN_STATUS(s); |
| 3891 | if (p->l.t.t != BC_LEX_LPAREN) RETURN_STATUS(bc_error_bad_token()); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3892 | |
| 3893 | flags = (flags & ~(BC_PARSE_PRINT | BC_PARSE_REL)) | BC_PARSE_ARRAY; |
| 3894 | |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 3895 | s = zbc_lex_next(&p->l); |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3896 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3897 | |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 3898 | s = zbc_parse_expr(p, flags, bc_parse_next_rel); |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3899 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3900 | |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3901 | if (p->l.t.t != BC_LEX_RPAREN) RETURN_STATUS(bc_error_bad_token()); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3902 | |
| 3903 | *prev = (type == BC_LEX_KEY_LENGTH) ? BC_INST_LENGTH : BC_INST_SQRT; |
| 3904 | bc_parse_push(p, *prev); |
| 3905 | |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3906 | RETURN_STATUS(zbc_lex_next(&p->l)); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3907 | } |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3908 | #if ERRORS_ARE_FATAL |
| 3909 | # define zbc_parse_builtin(...) (zbc_parse_builtin(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 3910 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3911 | |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3912 | static BC_STATUS zbc_parse_scale(BcParse *p, BcInst *type, uint8_t flags) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3913 | { |
| 3914 | BcStatus s; |
| 3915 | |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 3916 | s = zbc_lex_next(&p->l); |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3917 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3918 | |
| 3919 | if (p->l.t.t != BC_LEX_LPAREN) { |
| 3920 | *type = BC_INST_SCALE; |
| 3921 | bc_parse_push(p, BC_INST_SCALE); |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3922 | RETURN_STATUS(BC_STATUS_SUCCESS); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3923 | } |
| 3924 | |
| 3925 | *type = BC_INST_SCALE_FUNC; |
| 3926 | flags &= ~(BC_PARSE_PRINT | BC_PARSE_REL); |
| 3927 | |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 3928 | s = zbc_lex_next(&p->l); |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3929 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3930 | |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 3931 | s = zbc_parse_expr(p, flags, bc_parse_next_rel); |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3932 | if (s) RETURN_STATUS(s); |
| 3933 | if (p->l.t.t != BC_LEX_RPAREN) |
| 3934 | RETURN_STATUS(bc_error_bad_token()); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3935 | bc_parse_push(p, BC_INST_SCALE_FUNC); |
| 3936 | |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3937 | RETURN_STATUS(zbc_lex_next(&p->l)); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3938 | } |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3939 | #if ERRORS_ARE_FATAL |
| 3940 | # define zbc_parse_scale(...) (zbc_parse_scale(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 3941 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3942 | |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3943 | static BC_STATUS zbc_parse_incdec(BcParse *p, BcInst *prev, bool *paren_expr, |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3944 | size_t *nexprs, uint8_t flags) |
| 3945 | { |
| 3946 | BcStatus s; |
| 3947 | BcLexType type; |
| 3948 | char inst; |
| 3949 | BcInst etype = *prev; |
| 3950 | |
| 3951 | if (etype == BC_INST_VAR || etype == BC_INST_ARRAY_ELEM || |
| 3952 | etype == BC_INST_SCALE || etype == BC_INST_LAST || |
| 3953 | etype == BC_INST_IBASE || etype == BC_INST_OBASE) |
| 3954 | { |
| 3955 | *prev = inst = BC_INST_INC_POST + (p->l.t.t != BC_LEX_OP_INC); |
| 3956 | bc_parse_push(p, inst); |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 3957 | s = zbc_lex_next(&p->l); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3958 | } |
| 3959 | else { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3960 | *prev = inst = BC_INST_INC_PRE + (p->l.t.t != BC_LEX_OP_INC); |
| 3961 | *paren_expr = true; |
| 3962 | |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 3963 | s = zbc_lex_next(&p->l); |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3964 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3965 | type = p->l.t.t; |
| 3966 | |
| 3967 | // Because we parse the next part of the expression |
| 3968 | // right here, we need to increment this. |
| 3969 | *nexprs = *nexprs + 1; |
| 3970 | |
| 3971 | switch (type) { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3972 | case BC_LEX_NAME: |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3973 | s = zbc_parse_name(p, prev, flags | BC_PARSE_NOCALL); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3974 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3975 | case BC_LEX_KEY_IBASE: |
| 3976 | case BC_LEX_KEY_LAST: |
| 3977 | case BC_LEX_KEY_OBASE: |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3978 | bc_parse_push(p, type - BC_LEX_KEY_IBASE + BC_INST_IBASE); |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 3979 | s = zbc_lex_next(&p->l); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3980 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3981 | case BC_LEX_KEY_SCALE: |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 3982 | s = zbc_lex_next(&p->l); |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3983 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3984 | if (p->l.t.t == BC_LEX_LPAREN) |
Denys Vlasenko | 24fb2cd | 2018-12-05 16:03:46 +0100 | [diff] [blame] | 3985 | s = bc_error_bad_token(); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3986 | else |
| 3987 | bc_parse_push(p, BC_INST_SCALE); |
| 3988 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3989 | default: |
Denys Vlasenko | 24fb2cd | 2018-12-05 16:03:46 +0100 | [diff] [blame] | 3990 | s = bc_error_bad_token(); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3991 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3992 | } |
| 3993 | |
| 3994 | if (!s) bc_parse_push(p, inst); |
| 3995 | } |
| 3996 | |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3997 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 3998 | } |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 3999 | #if ERRORS_ARE_FATAL |
| 4000 | # define zbc_parse_incdec(...) (zbc_parse_incdec(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 4001 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4002 | |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 4003 | static BC_STATUS zbc_parse_minus(BcParse *p, BcInst *prev, size_t ops_bgn, |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4004 | bool rparen, size_t *nexprs) |
| 4005 | { |
| 4006 | BcStatus s; |
| 4007 | BcLexType type; |
| 4008 | BcInst etype = *prev; |
| 4009 | |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 4010 | s = zbc_lex_next(&p->l); |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 4011 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4012 | |
| 4013 | type = rparen || etype == BC_INST_INC_POST || etype == BC_INST_DEC_POST || |
| 4014 | (etype >= BC_INST_NUM && etype <= BC_INST_SQRT) ? |
| 4015 | BC_LEX_OP_MINUS : |
| 4016 | BC_LEX_NEG; |
Denys Vlasenko | 0154d78 | 2018-12-14 23:32:51 +0100 | [diff] [blame] | 4017 | *prev = BC_TOKEN_2_INST(type); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4018 | |
| 4019 | // We can just push onto the op stack because this is the largest |
| 4020 | // precedence operator that gets pushed. Inc/dec does not. |
| 4021 | if (type != BC_LEX_OP_MINUS) |
| 4022 | bc_vec_push(&p->ops, &type); |
| 4023 | else |
Denys Vlasenko | 7b1df3d | 2018-12-14 23:12:48 +0100 | [diff] [blame] | 4024 | bc_parse_operator(p, type, ops_bgn, nexprs); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4025 | |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 4026 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4027 | } |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 4028 | #if ERRORS_ARE_FATAL |
| 4029 | # define zbc_parse_minus(...) (zbc_parse_minus(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 4030 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4031 | |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 4032 | static BC_STATUS zbc_parse_string(BcParse *p, char inst) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4033 | { |
| 4034 | char *str = xstrdup(p->l.t.v.v); |
| 4035 | |
| 4036 | bc_parse_push(p, BC_INST_STR); |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 4037 | bc_parse_pushIndex(p, G.prog.strs.len); |
| 4038 | bc_vec_push(&G.prog.strs, &str); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4039 | bc_parse_push(p, inst); |
| 4040 | |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 4041 | RETURN_STATUS(zbc_lex_next(&p->l)); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4042 | } |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 4043 | #if ERRORS_ARE_FATAL |
| 4044 | # define zbc_parse_string(...) (zbc_parse_string(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 4045 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4046 | |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4047 | static BC_STATUS zbc_parse_print(BcParse *p) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4048 | { |
| 4049 | BcStatus s; |
| 4050 | BcLexType type; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4051 | |
Denys Vlasenko | 5d18f6b | 2018-12-16 21:08:30 +0100 | [diff] [blame] | 4052 | for (;;) { |
| 4053 | s = zbc_lex_next(&p->l); |
| 4054 | if (s) RETURN_STATUS(s); |
| 4055 | type = p->l.t.t; |
Denys Vlasenko | ebc41c9 | 2018-12-08 23:36:28 +0100 | [diff] [blame] | 4056 | if (type == BC_LEX_STR) { |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 4057 | s = zbc_parse_string(p, BC_INST_PRINT_POP); |
Denys Vlasenko | ebc41c9 | 2018-12-08 23:36:28 +0100 | [diff] [blame] | 4058 | } else { |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4059 | s = zbc_parse_expr(p, 0, bc_parse_next_print); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4060 | bc_parse_push(p, BC_INST_PRINT_POP); |
| 4061 | } |
Denys Vlasenko | 5d18f6b | 2018-12-16 21:08:30 +0100 | [diff] [blame] | 4062 | if (s) RETURN_STATUS(s); |
| 4063 | if (p->l.t.t != BC_LEX_COMMA) |
| 4064 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4065 | } |
| 4066 | |
Denys Vlasenko | 5d18f6b | 2018-12-16 21:08:30 +0100 | [diff] [blame] | 4067 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4068 | } |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4069 | #if ERRORS_ARE_FATAL |
| 4070 | # define zbc_parse_print(...) (zbc_parse_print(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 4071 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4072 | |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4073 | static BC_STATUS zbc_parse_return(BcParse *p) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4074 | { |
| 4075 | BcStatus s; |
| 4076 | BcLexType t; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4077 | |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 4078 | dbg_lex_enter("%s:%d entered", __func__, __LINE__); |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 4079 | s = zbc_lex_next(&p->l); |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4080 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4081 | |
| 4082 | t = p->l.t.t; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4083 | if (t == BC_LEX_NLINE || t == BC_LEX_SCOLON) |
| 4084 | bc_parse_push(p, BC_INST_RET0); |
| 4085 | else { |
Denys Vlasenko | e9519e4 | 2018-12-16 17:06:07 +0100 | [diff] [blame] | 4086 | bool paren = (t == BC_LEX_LPAREN); |
Denys Vlasenko | 050b0fe | 2018-12-05 22:40:44 +0100 | [diff] [blame] | 4087 | s = bc_parse_expr_empty_ok(p, 0, bc_parse_next_expr); |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 4088 | if (s == BC_STATUS_PARSE_EMPTY_EXP) { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4089 | bc_parse_push(p, BC_INST_RET0); |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 4090 | s = zbc_lex_next(&p->l); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4091 | } |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4092 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4093 | |
| 4094 | if (!paren || p->l.t.last != BC_LEX_RPAREN) { |
Denys Vlasenko | a6f84e1 | 2018-12-06 11:10:11 +0100 | [diff] [blame] | 4095 | s = bc_POSIX_requires("parentheses around return expressions"); |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4096 | ERROR_RETURN(if (s) RETURN_STATUS(s);) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4097 | } |
| 4098 | |
| 4099 | bc_parse_push(p, BC_INST_RET); |
| 4100 | } |
| 4101 | |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 4102 | dbg_lex_done("%s:%d done", __func__, __LINE__); |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4103 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4104 | } |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4105 | #if ERRORS_ARE_FATAL |
| 4106 | # define zbc_parse_return(...) (zbc_parse_return(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 4107 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4108 | |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 4109 | static BC_STATUS zbc_parse_if(BcParse *p) |
| 4110 | { |
| 4111 | BcStatus s; |
Denys Vlasenko | 1585083 | 2018-12-16 21:40:54 +0100 | [diff] [blame] | 4112 | size_t ip_idx; |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 4113 | size_t *label; |
| 4114 | |
| 4115 | dbg_lex_enter("%s:%d entered", __func__, __LINE__); |
| 4116 | s = zbc_lex_next(&p->l); |
| 4117 | if (s) RETURN_STATUS(s); |
| 4118 | if (p->l.t.t != BC_LEX_LPAREN) RETURN_STATUS(bc_error_bad_token()); |
| 4119 | |
| 4120 | s = zbc_lex_next(&p->l); |
| 4121 | if (s) RETURN_STATUS(s); |
| 4122 | s = zbc_parse_expr(p, BC_PARSE_REL, bc_parse_next_rel); |
| 4123 | if (s) RETURN_STATUS(s); |
| 4124 | |
| 4125 | if (p->l.t.t != BC_LEX_RPAREN) RETURN_STATUS(bc_error_bad_token()); |
Denys Vlasenko | 202dd19 | 2018-12-16 17:30:35 +0100 | [diff] [blame] | 4126 | // if(cond)<newline>stmt is accepted too (but not 2+ newlines) |
| 4127 | s = zbc_lex_next_and_skip_NLINE(&p->l); |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 4128 | if (s) RETURN_STATUS(s); |
| 4129 | |
| 4130 | bc_parse_push(p, BC_INST_JUMP_ZERO); |
Denys Vlasenko | 1585083 | 2018-12-16 21:40:54 +0100 | [diff] [blame] | 4131 | ip_idx = p->func->labels.len; |
| 4132 | bc_parse_pushIndex(p, ip_idx); |
| 4133 | bc_vec_push(&p->func->labels, &ip_idx); |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 4134 | |
Denys Vlasenko | cb18b54 | 2018-12-16 20:46:15 +0100 | [diff] [blame] | 4135 | s = zbc_parse_stmt_fail_if_bare_NLINE(p, false, "if"); |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 4136 | if (s) RETURN_STATUS(s); |
Denys Vlasenko | a50576a | 2018-12-16 19:21:57 +0100 | [diff] [blame] | 4137 | |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 4138 | dbg_lex("%s:%d in if after stmt: p->l.t.t:%d", __func__, __LINE__, p->l.t.t); |
| 4139 | if (p->l.t.t == BC_LEX_KEY_ELSE) { |
Denys Vlasenko | 1585083 | 2018-12-16 21:40:54 +0100 | [diff] [blame] | 4140 | size_t ip2_idx; |
Denys Vlasenko | 7415633 | 2018-12-16 21:21:27 +0100 | [diff] [blame] | 4141 | |
Denys Vlasenko | a50576a | 2018-12-16 19:21:57 +0100 | [diff] [blame] | 4142 | s = zbc_lex_next_and_skip_NLINE(&p->l); |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 4143 | if (s) RETURN_STATUS(s); |
Denys Vlasenko | a50576a | 2018-12-16 19:21:57 +0100 | [diff] [blame] | 4144 | |
Denys Vlasenko | 1585083 | 2018-12-16 21:40:54 +0100 | [diff] [blame] | 4145 | ip2_idx = p->func->labels.len; |
Denys Vlasenko | a50576a | 2018-12-16 19:21:57 +0100 | [diff] [blame] | 4146 | |
Denys Vlasenko | 1585083 | 2018-12-16 21:40:54 +0100 | [diff] [blame] | 4147 | dbg_lex("%s:%d after if() body: BC_INST_JUMP to %d", __func__, __LINE__, ip2_idx); |
Denys Vlasenko | a50576a | 2018-12-16 19:21:57 +0100 | [diff] [blame] | 4148 | bc_parse_push(p, BC_INST_JUMP); |
Denys Vlasenko | 1585083 | 2018-12-16 21:40:54 +0100 | [diff] [blame] | 4149 | bc_parse_pushIndex(p, ip2_idx); |
Denys Vlasenko | a50576a | 2018-12-16 19:21:57 +0100 | [diff] [blame] | 4150 | |
Denys Vlasenko | 1585083 | 2018-12-16 21:40:54 +0100 | [diff] [blame] | 4151 | label = bc_vec_item(&p->func->labels, ip_idx); |
| 4152 | dbg_lex("%s:%d rewriting 'if_zero' label to jump to 'else': %d -> %d", __func__, __LINE__, *label, p->func->code.len); |
Denys Vlasenko | a50576a | 2018-12-16 19:21:57 +0100 | [diff] [blame] | 4153 | *label = p->func->code.len; |
Denys Vlasenko | a50576a | 2018-12-16 19:21:57 +0100 | [diff] [blame] | 4154 | |
Denys Vlasenko | 1585083 | 2018-12-16 21:40:54 +0100 | [diff] [blame] | 4155 | bc_vec_push(&p->func->labels, &ip2_idx); |
| 4156 | ip_idx = ip2_idx; |
Denys Vlasenko | a50576a | 2018-12-16 19:21:57 +0100 | [diff] [blame] | 4157 | |
Denys Vlasenko | 6b5b46f | 2018-12-16 21:29:08 +0100 | [diff] [blame] | 4158 | s = zbc_parse_stmt_fail_if_bare_NLINE(p, false, "else"); |
Denys Vlasenko | a50576a | 2018-12-16 19:21:57 +0100 | [diff] [blame] | 4159 | if (s) RETURN_STATUS(s); |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 4160 | } |
| 4161 | |
Denys Vlasenko | 1585083 | 2018-12-16 21:40:54 +0100 | [diff] [blame] | 4162 | label = bc_vec_item(&p->func->labels, ip_idx); |
| 4163 | dbg_lex("%s:%d rewriting label to jump after 'if' body: %d -> %d", __func__, __LINE__, *label, p->func->code.len); |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 4164 | *label = p->func->code.len; |
| 4165 | |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 4166 | dbg_lex_done("%s:%d done", __func__, __LINE__); |
| 4167 | RETURN_STATUS(s); |
| 4168 | } |
| 4169 | #if ERRORS_ARE_FATAL |
| 4170 | # define zbc_parse_if(...) (zbc_parse_if(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 4171 | #endif |
| 4172 | |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4173 | static BC_STATUS zbc_parse_while(BcParse *p) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4174 | { |
| 4175 | BcStatus s; |
| 4176 | BcInstPtr ip; |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 4177 | BcInstPtr *ipp; |
| 4178 | size_t *label; |
| 4179 | size_t n; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4180 | |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 4181 | s = zbc_lex_next(&p->l); |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4182 | if (s) RETURN_STATUS(s); |
| 4183 | if (p->l.t.t != BC_LEX_LPAREN) RETURN_STATUS(bc_error_bad_token()); |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 4184 | s = zbc_lex_next(&p->l); |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4185 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4186 | |
| 4187 | ip.idx = p->func->labels.len; |
| 4188 | |
| 4189 | bc_vec_push(&p->func->labels, &p->func->code.len); |
| 4190 | bc_vec_push(&p->conds, &ip.idx); |
| 4191 | |
| 4192 | ip.idx = p->func->labels.len; |
| 4193 | ip.func = 1; |
| 4194 | ip.len = 0; |
| 4195 | |
| 4196 | bc_vec_push(&p->exits, &ip); |
| 4197 | bc_vec_push(&p->func->labels, &ip.idx); |
| 4198 | |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4199 | s = zbc_parse_expr(p, BC_PARSE_REL, bc_parse_next_rel); |
| 4200 | if (s) RETURN_STATUS(s); |
| 4201 | if (p->l.t.t != BC_LEX_RPAREN) RETURN_STATUS(bc_error_bad_token()); |
Denys Vlasenko | 202dd19 | 2018-12-16 17:30:35 +0100 | [diff] [blame] | 4202 | |
| 4203 | // while(cond)<newline>stmt is accepted too |
| 4204 | s = zbc_lex_next_and_skip_NLINE(&p->l); |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4205 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4206 | |
| 4207 | bc_parse_push(p, BC_INST_JUMP_ZERO); |
| 4208 | bc_parse_pushIndex(p, ip.idx); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4209 | |
Denys Vlasenko | cb18b54 | 2018-12-16 20:46:15 +0100 | [diff] [blame] | 4210 | s = zbc_parse_stmt_fail_if_bare_NLINE(p, false, "while"); |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 4211 | if (s) RETURN_STATUS(s); |
| 4212 | |
| 4213 | n = *((size_t *) bc_vec_top(&p->conds)); |
| 4214 | bc_parse_push(p, BC_INST_JUMP); |
| 4215 | bc_parse_pushIndex(p, n); |
| 4216 | |
| 4217 | ipp = bc_vec_top(&p->exits); |
| 4218 | label = bc_vec_top(&p->conds); |
| 4219 | |
| 4220 | dbg_lex("%s:%d BC_INST_JUMP to %d", __func__, __LINE__, *label); |
| 4221 | bc_parse_push(p, BC_INST_JUMP); |
| 4222 | bc_parse_pushIndex(p, *label); |
| 4223 | |
| 4224 | label = bc_vec_item(&p->func->labels, ipp->idx); |
| 4225 | dbg_lex("%s:%d rewriting label: %d -> %d", __func__, __LINE__, *label, p->func->code.len); |
| 4226 | *label = p->func->code.len; |
| 4227 | |
| 4228 | bc_vec_pop(&p->exits); |
| 4229 | bc_vec_pop(&p->conds); |
| 4230 | |
| 4231 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4232 | } |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4233 | #if ERRORS_ARE_FATAL |
| 4234 | # define zbc_parse_while(...) (zbc_parse_while(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 4235 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4236 | |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4237 | static BC_STATUS zbc_parse_for(BcParse *p) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4238 | { |
| 4239 | BcStatus s; |
| 4240 | BcInstPtr ip; |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 4241 | BcInstPtr *ipp; |
| 4242 | size_t *label; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4243 | size_t cond_idx, exit_idx, body_idx, update_idx; |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 4244 | size_t n; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4245 | |
Denys Vlasenko | 2ea53a4 | 2018-12-14 17:51:17 +0100 | [diff] [blame] | 4246 | dbg_lex("%s:%d p->l.t.t:%d", __func__, __LINE__, p->l.t.t); |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 4247 | s = zbc_lex_next(&p->l); |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4248 | if (s) RETURN_STATUS(s); |
| 4249 | if (p->l.t.t != BC_LEX_LPAREN) RETURN_STATUS(bc_error_bad_token()); |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 4250 | s = zbc_lex_next(&p->l); |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4251 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4252 | |
| 4253 | if (p->l.t.t != BC_LEX_SCOLON) |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4254 | s = zbc_parse_expr(p, 0, bc_parse_next_for); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4255 | else |
Denys Vlasenko | 0064679 | 2018-12-05 18:12:27 +0100 | [diff] [blame] | 4256 | s = bc_POSIX_does_not_allow_empty_X_expression_in_for("init"); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4257 | |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4258 | if (s) RETURN_STATUS(s); |
| 4259 | if (p->l.t.t != BC_LEX_SCOLON) RETURN_STATUS(bc_error_bad_token()); |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 4260 | s = zbc_lex_next(&p->l); |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4261 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4262 | |
| 4263 | cond_idx = p->func->labels.len; |
| 4264 | update_idx = cond_idx + 1; |
| 4265 | body_idx = update_idx + 1; |
| 4266 | exit_idx = body_idx + 1; |
| 4267 | |
| 4268 | bc_vec_push(&p->func->labels, &p->func->code.len); |
| 4269 | |
| 4270 | if (p->l.t.t != BC_LEX_SCOLON) |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4271 | s = zbc_parse_expr(p, BC_PARSE_REL, bc_parse_next_for); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4272 | else |
Denys Vlasenko | 0064679 | 2018-12-05 18:12:27 +0100 | [diff] [blame] | 4273 | s = bc_POSIX_does_not_allow_empty_X_expression_in_for("condition"); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4274 | |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4275 | if (s) RETURN_STATUS(s); |
| 4276 | if (p->l.t.t != BC_LEX_SCOLON) RETURN_STATUS(bc_error_bad_token()); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4277 | |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 4278 | s = zbc_lex_next(&p->l); |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4279 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4280 | |
| 4281 | bc_parse_push(p, BC_INST_JUMP_ZERO); |
| 4282 | bc_parse_pushIndex(p, exit_idx); |
| 4283 | bc_parse_push(p, BC_INST_JUMP); |
| 4284 | bc_parse_pushIndex(p, body_idx); |
| 4285 | |
| 4286 | ip.idx = p->func->labels.len; |
| 4287 | |
| 4288 | bc_vec_push(&p->conds, &update_idx); |
| 4289 | bc_vec_push(&p->func->labels, &p->func->code.len); |
| 4290 | |
| 4291 | if (p->l.t.t != BC_LEX_RPAREN) |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4292 | s = zbc_parse_expr(p, 0, bc_parse_next_rel); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4293 | else |
Denys Vlasenko | 0064679 | 2018-12-05 18:12:27 +0100 | [diff] [blame] | 4294 | s = bc_POSIX_does_not_allow_empty_X_expression_in_for("update"); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4295 | |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4296 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4297 | |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4298 | if (p->l.t.t != BC_LEX_RPAREN) RETURN_STATUS(bc_error_bad_token()); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4299 | bc_parse_push(p, BC_INST_JUMP); |
| 4300 | bc_parse_pushIndex(p, cond_idx); |
| 4301 | bc_vec_push(&p->func->labels, &p->func->code.len); |
| 4302 | |
| 4303 | ip.idx = exit_idx; |
| 4304 | ip.func = 1; |
| 4305 | ip.len = 0; |
| 4306 | |
| 4307 | bc_vec_push(&p->exits, &ip); |
| 4308 | bc_vec_push(&p->func->labels, &ip.idx); |
Denys Vlasenko | 202dd19 | 2018-12-16 17:30:35 +0100 | [diff] [blame] | 4309 | |
| 4310 | // for(...)<newline>stmt is accepted as well |
| 4311 | s = zbc_lex_next_and_skip_NLINE(&p->l); |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4312 | if (s) RETURN_STATUS(s); |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 4313 | |
Denys Vlasenko | cb18b54 | 2018-12-16 20:46:15 +0100 | [diff] [blame] | 4314 | s = zbc_parse_stmt_fail_if_bare_NLINE(p, false, "for"); |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 4315 | if (s) RETURN_STATUS(s); |
| 4316 | |
| 4317 | n = *((size_t *) bc_vec_top(&p->conds)); |
| 4318 | bc_parse_push(p, BC_INST_JUMP); |
| 4319 | bc_parse_pushIndex(p, n); |
| 4320 | |
| 4321 | ipp = bc_vec_top(&p->exits); |
| 4322 | label = bc_vec_top(&p->conds); |
| 4323 | |
| 4324 | //TODO: commonalize? |
| 4325 | dbg_lex("%s:%d BC_INST_JUMP to %d", __func__, __LINE__, *label); |
| 4326 | bc_parse_push(p, BC_INST_JUMP); |
| 4327 | bc_parse_pushIndex(p, *label); |
| 4328 | |
| 4329 | label = bc_vec_item(&p->func->labels, ipp->idx); |
| 4330 | dbg_lex("%s:%d rewriting label: %d -> %d", __func__, __LINE__, *label, p->func->code.len); |
| 4331 | *label = p->func->code.len; |
| 4332 | |
| 4333 | bc_vec_pop(&p->exits); |
| 4334 | bc_vec_pop(&p->conds); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4335 | |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4336 | RETURN_STATUS(BC_STATUS_SUCCESS); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4337 | } |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4338 | #if ERRORS_ARE_FATAL |
| 4339 | # define zbc_parse_for(...) (zbc_parse_for(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 4340 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4341 | |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 4342 | static BC_STATUS zbc_parse_break_or_continue(BcParse *p, BcLexType type) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4343 | { |
| 4344 | BcStatus s; |
| 4345 | size_t i; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4346 | |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4347 | if (type == BC_LEX_KEY_BREAK) { |
Denys Vlasenko | 563d93c | 2018-12-16 19:47:40 +0100 | [diff] [blame] | 4348 | BcInstPtr *ipp; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4349 | |
Denys Vlasenko | 563d93c | 2018-12-16 19:47:40 +0100 | [diff] [blame] | 4350 | i = p->exits.len; |
| 4351 | for (;;) { |
| 4352 | if (i == 0) // none of the enclosing blocks is a loop |
| 4353 | RETURN_STATUS(bc_error_bad_token()); |
| 4354 | ipp = bc_vec_item(&p->exits, --i); |
| 4355 | if (ipp->func != 0) |
| 4356 | break; |
| 4357 | } |
| 4358 | i = ipp->idx; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4359 | } |
| 4360 | else |
| 4361 | i = *((size_t *) bc_vec_top(&p->conds)); |
| 4362 | |
| 4363 | bc_parse_push(p, BC_INST_JUMP); |
| 4364 | bc_parse_pushIndex(p, i); |
| 4365 | |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 4366 | s = zbc_lex_next(&p->l); |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 4367 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4368 | |
| 4369 | if (p->l.t.t != BC_LEX_SCOLON && p->l.t.t != BC_LEX_NLINE) |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 4370 | RETURN_STATUS(bc_error_bad_token()); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4371 | |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 4372 | RETURN_STATUS(zbc_lex_next(&p->l)); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4373 | } |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 4374 | #if ERRORS_ARE_FATAL |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 4375 | # define zbc_parse_break_or_continue(...) (zbc_parse_break_or_continue(__VA_ARGS__), BC_STATUS_SUCCESS) |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 4376 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4377 | |
Denys Vlasenko | e9519e4 | 2018-12-16 17:06:07 +0100 | [diff] [blame] | 4378 | static BC_STATUS zbc_parse_funcdef(BcParse *p) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4379 | { |
| 4380 | BcStatus s; |
| 4381 | bool var, comma = false; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4382 | char *name; |
| 4383 | |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 4384 | s = zbc_lex_next(&p->l); |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 4385 | if (s) RETURN_STATUS(s); |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 4386 | if (p->l.t.t != BC_LEX_NAME) |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 4387 | RETURN_STATUS(bc_error("bad function definition")); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4388 | |
| 4389 | name = xstrdup(p->l.t.v.v); |
| 4390 | bc_parse_addFunc(p, name, &p->fidx); |
| 4391 | |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 4392 | s = zbc_lex_next(&p->l); |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 4393 | if (s) RETURN_STATUS(s); |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 4394 | if (p->l.t.t != BC_LEX_LPAREN) |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 4395 | RETURN_STATUS(bc_error("bad function definition")); |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 4396 | s = zbc_lex_next(&p->l); |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 4397 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4398 | |
| 4399 | while (p->l.t.t != BC_LEX_RPAREN) { |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 4400 | if (p->l.t.t != BC_LEX_NAME) |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 4401 | RETURN_STATUS(bc_error("bad function definition")); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4402 | |
| 4403 | ++p->func->nparams; |
| 4404 | |
| 4405 | name = xstrdup(p->l.t.v.v); |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 4406 | s = zbc_lex_next(&p->l); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4407 | if (s) goto err; |
| 4408 | |
| 4409 | var = p->l.t.t != BC_LEX_LBRACKET; |
| 4410 | |
| 4411 | if (!var) { |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 4412 | s = zbc_lex_next(&p->l); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4413 | if (s) goto err; |
| 4414 | |
| 4415 | if (p->l.t.t != BC_LEX_RBRACKET) { |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 4416 | s = bc_error("bad function definition"); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4417 | goto err; |
| 4418 | } |
| 4419 | |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 4420 | s = zbc_lex_next(&p->l); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4421 | if (s) goto err; |
| 4422 | } |
| 4423 | |
| 4424 | comma = p->l.t.t == BC_LEX_COMMA; |
| 4425 | if (comma) { |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 4426 | s = zbc_lex_next(&p->l); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4427 | if (s) goto err; |
| 4428 | } |
| 4429 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 4430 | s = zbc_func_insert(p->func, name, var); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4431 | if (s) goto err; |
| 4432 | } |
| 4433 | |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 4434 | if (comma) RETURN_STATUS(bc_error("bad function definition")); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4435 | |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 4436 | s = zbc_lex_next(&p->l); |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 4437 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4438 | |
| 4439 | if (p->l.t.t != BC_LEX_LBRACE) |
Denys Vlasenko | a6f84e1 | 2018-12-06 11:10:11 +0100 | [diff] [blame] | 4440 | s = bc_POSIX_requires("the left brace be on the same line as the function header"); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4441 | |
Denys Vlasenko | 202dd19 | 2018-12-16 17:30:35 +0100 | [diff] [blame] | 4442 | // Prevent "define z()<newline>" from being interpreted as function with empty stmt as body |
| 4443 | s = zbc_lex_skip_if_at_NLINE(&p->l); |
| 4444 | if (s) RETURN_STATUS(s); |
Denys Vlasenko | e9519e4 | 2018-12-16 17:06:07 +0100 | [diff] [blame] | 4445 | //TODO: GNU bc requires a {} block even if function body has single stmt, enforce this? |
| 4446 | |
| 4447 | p->in_funcdef++; // to determine whether "return" stmt is allowed, and such |
Denys Vlasenko | cb18b54 | 2018-12-16 20:46:15 +0100 | [diff] [blame] | 4448 | s = zbc_parse_stmt_fail_if_bare_NLINE(p, true, "define"); |
Denys Vlasenko | e9519e4 | 2018-12-16 17:06:07 +0100 | [diff] [blame] | 4449 | p->in_funcdef--; |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 4450 | if (s) RETURN_STATUS(s); |
| 4451 | |
| 4452 | bc_parse_push(p, BC_INST_RET0); |
| 4453 | bc_parse_updateFunc(p, BC_PROG_MAIN); |
| 4454 | |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 4455 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4456 | |
| 4457 | err: |
| 4458 | free(name); |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 4459 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4460 | } |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 4461 | #if ERRORS_ARE_FATAL |
Denys Vlasenko | e9519e4 | 2018-12-16 17:06:07 +0100 | [diff] [blame] | 4462 | # define zbc_parse_funcdef(...) (zbc_parse_funcdef(__VA_ARGS__), BC_STATUS_SUCCESS) |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 4463 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4464 | |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 4465 | static BC_STATUS zbc_parse_auto(BcParse *p) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4466 | { |
| 4467 | BcStatus s; |
| 4468 | bool comma, var, one; |
| 4469 | char *name; |
| 4470 | |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 4471 | dbg_lex_enter("%s:%d entered", __func__, __LINE__); |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 4472 | s = zbc_lex_next(&p->l); |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 4473 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4474 | |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 4475 | comma = false; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4476 | one = p->l.t.t == BC_LEX_NAME; |
| 4477 | |
| 4478 | while (p->l.t.t == BC_LEX_NAME) { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4479 | name = xstrdup(p->l.t.v.v); |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 4480 | s = zbc_lex_next(&p->l); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4481 | if (s) goto err; |
| 4482 | |
| 4483 | var = p->l.t.t != BC_LEX_LBRACKET; |
| 4484 | if (!var) { |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 4485 | s = zbc_lex_next(&p->l); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4486 | if (s) goto err; |
| 4487 | |
| 4488 | if (p->l.t.t != BC_LEX_RBRACKET) { |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 4489 | s = bc_error("bad function definition"); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4490 | goto err; |
| 4491 | } |
| 4492 | |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 4493 | s = zbc_lex_next(&p->l); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4494 | if (s) goto err; |
| 4495 | } |
| 4496 | |
| 4497 | comma = p->l.t.t == BC_LEX_COMMA; |
| 4498 | if (comma) { |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 4499 | s = zbc_lex_next(&p->l); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4500 | if (s) goto err; |
| 4501 | } |
| 4502 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 4503 | s = zbc_func_insert(p->func, name, var); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4504 | if (s) goto err; |
| 4505 | } |
| 4506 | |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 4507 | if (comma) RETURN_STATUS(bc_error("bad function definition")); |
| 4508 | if (!one) RETURN_STATUS(bc_error("no auto variable found")); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4509 | |
| 4510 | if (p->l.t.t != BC_LEX_NLINE && p->l.t.t != BC_LEX_SCOLON) |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 4511 | RETURN_STATUS(bc_error_bad_token()); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4512 | |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 4513 | dbg_lex_done("%s:%d done", __func__, __LINE__); |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 4514 | RETURN_STATUS(zbc_lex_next(&p->l)); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4515 | |
| 4516 | err: |
| 4517 | free(name); |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 4518 | dbg_lex_done("%s:%d done (ERROR)", __func__, __LINE__); |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 4519 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4520 | } |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 4521 | #if ERRORS_ARE_FATAL |
| 4522 | # define zbc_parse_auto(...) (zbc_parse_auto(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 4523 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4524 | |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 4525 | #undef zbc_parse_stmt_possibly_auto |
| 4526 | static BC_STATUS zbc_parse_stmt_possibly_auto(BcParse *p, bool auto_allowed) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4527 | { |
| 4528 | BcStatus s = BC_STATUS_SUCCESS; |
| 4529 | |
Denys Vlasenko | 2ea53a4 | 2018-12-14 17:51:17 +0100 | [diff] [blame] | 4530 | dbg_lex_enter("%s:%d entered, p->l.t.t:%d", __func__, __LINE__, p->l.t.t); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4531 | |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 4532 | if (p->l.t.t == BC_LEX_NLINE) { |
| 4533 | dbg_lex_done("%s:%d done (seen BC_LEX_NLINE)", __func__, __LINE__); |
| 4534 | RETURN_STATUS(zbc_lex_next(&p->l)); |
| 4535 | } |
| 4536 | if (p->l.t.t == BC_LEX_SCOLON) { |
| 4537 | dbg_lex_done("%s:%d done (seen BC_LEX_SCOLON)", __func__, __LINE__); |
| 4538 | RETURN_STATUS(zbc_lex_next(&p->l)); |
| 4539 | } |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4540 | |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 4541 | if (p->l.t.t == BC_LEX_LBRACE) { |
| 4542 | dbg_lex("%s:%d BC_LEX_LBRACE: (auto_allowed:%d)", __func__, __LINE__, auto_allowed); |
| 4543 | do { |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 4544 | s = zbc_lex_next(&p->l); |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4545 | if (s) RETURN_STATUS(s); |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 4546 | } while (p->l.t.t == BC_LEX_NLINE); |
| 4547 | if (auto_allowed && p->l.t.t == BC_LEX_KEY_AUTO) { |
| 4548 | dbg_lex("%s:%d calling zbc_parse_auto()", __func__, __LINE__); |
| 4549 | s = zbc_parse_auto(p); |
| 4550 | if (s) RETURN_STATUS(s); |
| 4551 | } |
| 4552 | while (p->l.t.t != BC_LEX_RBRACE) { |
| 4553 | dbg_lex("%s:%d block parsing loop", __func__, __LINE__); |
| 4554 | s = zbc_parse_stmt(p); |
| 4555 | if (s) RETURN_STATUS(s); |
| 4556 | } |
| 4557 | s = zbc_lex_next(&p->l); |
| 4558 | dbg_lex_done("%s:%d done (seen BC_LEX_RBRACE)", __func__, __LINE__); |
| 4559 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4560 | } |
| 4561 | |
Denys Vlasenko | 2ea53a4 | 2018-12-14 17:51:17 +0100 | [diff] [blame] | 4562 | dbg_lex("%s:%d p->l.t.t:%d", __func__, __LINE__, p->l.t.t); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4563 | switch (p->l.t.t) { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4564 | case BC_LEX_OP_INC: |
| 4565 | case BC_LEX_OP_DEC: |
| 4566 | case BC_LEX_OP_MINUS: |
| 4567 | case BC_LEX_OP_BOOL_NOT: |
| 4568 | case BC_LEX_LPAREN: |
| 4569 | case BC_LEX_NAME: |
| 4570 | case BC_LEX_NUMBER: |
| 4571 | case BC_LEX_KEY_IBASE: |
| 4572 | case BC_LEX_KEY_LAST: |
| 4573 | case BC_LEX_KEY_LENGTH: |
| 4574 | case BC_LEX_KEY_OBASE: |
| 4575 | case BC_LEX_KEY_READ: |
| 4576 | case BC_LEX_KEY_SCALE: |
| 4577 | case BC_LEX_KEY_SQRT: |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4578 | s = zbc_parse_expr(p, BC_PARSE_PRINT, bc_parse_next_expr); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4579 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4580 | case BC_LEX_STR: |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 4581 | s = zbc_parse_string(p, BC_INST_PRINT_STR); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4582 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4583 | case BC_LEX_KEY_BREAK: |
| 4584 | case BC_LEX_KEY_CONTINUE: |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 4585 | s = zbc_parse_break_or_continue(p, p->l.t.t); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4586 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4587 | case BC_LEX_KEY_FOR: |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4588 | s = zbc_parse_for(p); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4589 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4590 | case BC_LEX_KEY_HALT: |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4591 | bc_parse_push(p, BC_INST_HALT); |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 4592 | s = zbc_lex_next(&p->l); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4593 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4594 | case BC_LEX_KEY_IF: |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4595 | s = zbc_parse_if(p); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4596 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4597 | case BC_LEX_KEY_LIMITS: |
Denys Vlasenko | cfdc133 | 2018-12-03 14:02:35 +0100 | [diff] [blame] | 4598 | // "limits" is a compile-time command, |
| 4599 | // the output is produced at _parse time_. |
Denys Vlasenko | 64074a1 | 2018-12-07 15:50:14 +0100 | [diff] [blame] | 4600 | printf( |
| 4601 | "BC_BASE_MAX = "BC_MAX_OBASE_STR "\n" |
| 4602 | "BC_DIM_MAX = "BC_MAX_DIM_STR "\n" |
| 4603 | "BC_SCALE_MAX = "BC_MAX_SCALE_STR "\n" |
| 4604 | "BC_STRING_MAX = "BC_MAX_STRING_STR"\n" |
| 4605 | "BC_NAME_MAX = "BC_MAX_NAME_STR "\n" |
| 4606 | "BC_NUM_MAX = "BC_MAX_NUM_STR "\n" |
| 4607 | "MAX Exponent = "BC_MAX_EXP_STR "\n" |
| 4608 | "Number of vars = "BC_MAX_VARS_STR "\n" |
| 4609 | ); |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 4610 | s = zbc_lex_next(&p->l); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4611 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4612 | case BC_LEX_KEY_PRINT: |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4613 | s = zbc_parse_print(p); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4614 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4615 | case BC_LEX_KEY_QUIT: |
Denys Vlasenko | cfdc133 | 2018-12-03 14:02:35 +0100 | [diff] [blame] | 4616 | // "quit" is a compile-time command. For example, |
| 4617 | // "if (0 == 1) quit" terminates when parsing the statement, |
| 4618 | // not when it is executed |
Denys Vlasenko | c7a7ce0 | 2018-12-06 23:06:57 +0100 | [diff] [blame] | 4619 | QUIT_OR_RETURN_TO_MAIN; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4620 | case BC_LEX_KEY_RETURN: |
Denys Vlasenko | e9519e4 | 2018-12-16 17:06:07 +0100 | [diff] [blame] | 4621 | if (!p->in_funcdef) |
| 4622 | RETURN_STATUS(bc_error("'return' not in a function")); |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4623 | s = zbc_parse_return(p); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4624 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4625 | case BC_LEX_KEY_WHILE: |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4626 | s = zbc_parse_while(p); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4627 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4628 | default: |
Denys Vlasenko | 24fb2cd | 2018-12-05 16:03:46 +0100 | [diff] [blame] | 4629 | s = bc_error_bad_token(); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4630 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4631 | } |
| 4632 | |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 4633 | if (s || G_interrupt) { |
| 4634 | bc_parse_reset(p); |
| 4635 | s = BC_STATUS_FAILURE; |
| 4636 | } |
| 4637 | |
Denys Vlasenko | 2ea53a4 | 2018-12-14 17:51:17 +0100 | [diff] [blame] | 4638 | dbg_lex_done("%s:%d done", __func__, __LINE__); |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4639 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4640 | } |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4641 | #if ERRORS_ARE_FATAL |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 4642 | # define zbc_parse_stmt_possibly_auto(...) (zbc_parse_stmt_possibly_auto(__VA_ARGS__), BC_STATUS_SUCCESS) |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4643 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4644 | |
Denys Vlasenko | 99b3762 | 2018-12-15 20:06:59 +0100 | [diff] [blame] | 4645 | static BC_STATUS zbc_parse_stmt_or_funcdef(BcParse *p) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4646 | { |
| 4647 | BcStatus s; |
| 4648 | |
Denys Vlasenko | 2ea53a4 | 2018-12-14 17:51:17 +0100 | [diff] [blame] | 4649 | dbg_lex_enter("%s:%d entered", __func__, __LINE__); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4650 | if (p->l.t.t == BC_LEX_EOF) |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 4651 | s = bc_error("end of file"); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4652 | else if (p->l.t.t == BC_LEX_KEY_DEFINE) { |
Denys Vlasenko | 2ea53a4 | 2018-12-14 17:51:17 +0100 | [diff] [blame] | 4653 | dbg_lex("%s:%d p->l.t.t:BC_LEX_KEY_DEFINE", __func__, __LINE__); |
Denys Vlasenko | e9519e4 | 2018-12-16 17:06:07 +0100 | [diff] [blame] | 4654 | s = zbc_parse_funcdef(p); |
Denys Vlasenko | 2ea53a4 | 2018-12-14 17:51:17 +0100 | [diff] [blame] | 4655 | } else { |
| 4656 | dbg_lex("%s:%d p->l.t.t:%d (not BC_LEX_KEY_DEFINE)", __func__, __LINE__, p->l.t.t); |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4657 | s = zbc_parse_stmt(p); |
Denys Vlasenko | 2ea53a4 | 2018-12-14 17:51:17 +0100 | [diff] [blame] | 4658 | } |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4659 | |
Denys Vlasenko | 2ea53a4 | 2018-12-14 17:51:17 +0100 | [diff] [blame] | 4660 | dbg_lex_done("%s:%d done", __func__, __LINE__); |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 4661 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4662 | } |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 4663 | #if ERRORS_ARE_FATAL |
Denys Vlasenko | 99b3762 | 2018-12-15 20:06:59 +0100 | [diff] [blame] | 4664 | # define zbc_parse_stmt_or_funcdef(...) (zbc_parse_stmt_or_funcdef(__VA_ARGS__), BC_STATUS_SUCCESS) |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 4665 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4666 | |
Denys Vlasenko | b402ff8 | 2018-12-11 15:45:15 +0100 | [diff] [blame] | 4667 | // This is not a "z" function: can also return BC_STATUS_PARSE_EMPTY_EXP |
Denys Vlasenko | 050b0fe | 2018-12-05 22:40:44 +0100 | [diff] [blame] | 4668 | static BcStatus bc_parse_expr_empty_ok(BcParse *p, uint8_t flags, BcParseNext next) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4669 | { |
| 4670 | BcStatus s = BC_STATUS_SUCCESS; |
| 4671 | BcInst prev = BC_INST_PRINT; |
| 4672 | BcLexType top, t = p->l.t.t; |
| 4673 | size_t nexprs = 0, ops_bgn = p->ops.len; |
Denys Vlasenko | 18c6b54 | 2018-12-07 12:57:32 +0100 | [diff] [blame] | 4674 | unsigned nparens, nrelops; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4675 | bool paren_first, paren_expr, rprn, done, get_token, assign, bin_last; |
| 4676 | |
Denys Vlasenko | 17df882 | 2018-12-14 23:00:24 +0100 | [diff] [blame] | 4677 | dbg_lex_enter("%s:%d entered", __func__, __LINE__); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4678 | paren_first = p->l.t.t == BC_LEX_LPAREN; |
| 4679 | nparens = nrelops = 0; |
| 4680 | paren_expr = rprn = done = get_token = assign = false; |
| 4681 | bin_last = true; |
| 4682 | |
Denys Vlasenko | bcb62a7 | 2018-12-05 20:17:48 +0100 | [diff] [blame] | 4683 | for (; !G_interrupt && !s && !done && bc_parse_exprs(t); t = p->l.t.t) { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4684 | switch (t) { |
| 4685 | |
| 4686 | case BC_LEX_OP_INC: |
| 4687 | case BC_LEX_OP_DEC: |
| 4688 | { |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 4689 | s = zbc_parse_incdec(p, &prev, &paren_expr, &nexprs, flags); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4690 | rprn = get_token = bin_last = false; |
| 4691 | break; |
| 4692 | } |
| 4693 | |
| 4694 | case BC_LEX_OP_MINUS: |
| 4695 | { |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 4696 | s = zbc_parse_minus(p, &prev, ops_bgn, rprn, &nexprs); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4697 | rprn = get_token = false; |
| 4698 | bin_last = prev == BC_INST_MINUS; |
| 4699 | break; |
| 4700 | } |
| 4701 | |
| 4702 | case BC_LEX_OP_ASSIGN_POWER: |
| 4703 | case BC_LEX_OP_ASSIGN_MULTIPLY: |
| 4704 | case BC_LEX_OP_ASSIGN_DIVIDE: |
| 4705 | case BC_LEX_OP_ASSIGN_MODULUS: |
| 4706 | case BC_LEX_OP_ASSIGN_PLUS: |
| 4707 | case BC_LEX_OP_ASSIGN_MINUS: |
| 4708 | case BC_LEX_OP_ASSIGN: |
| 4709 | { |
| 4710 | if (prev != BC_INST_VAR && prev != BC_INST_ARRAY_ELEM && |
| 4711 | prev != BC_INST_SCALE && prev != BC_INST_IBASE && |
| 4712 | prev != BC_INST_OBASE && prev != BC_INST_LAST) |
| 4713 | { |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 4714 | s = bc_error("bad assignment:" |
Denys Vlasenko | 0154d78 | 2018-12-14 23:32:51 +0100 | [diff] [blame] | 4715 | " left side must be variable" |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 4716 | " or array element" |
Denys Vlasenko | 0154d78 | 2018-12-14 23:32:51 +0100 | [diff] [blame] | 4717 | ); // note: shared string |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4718 | break; |
| 4719 | } |
| 4720 | } |
| 4721 | // Fallthrough. |
| 4722 | case BC_LEX_OP_POWER: |
| 4723 | case BC_LEX_OP_MULTIPLY: |
| 4724 | case BC_LEX_OP_DIVIDE: |
| 4725 | case BC_LEX_OP_MODULUS: |
| 4726 | case BC_LEX_OP_PLUS: |
| 4727 | case BC_LEX_OP_REL_EQ: |
| 4728 | case BC_LEX_OP_REL_LE: |
| 4729 | case BC_LEX_OP_REL_GE: |
| 4730 | case BC_LEX_OP_REL_NE: |
| 4731 | case BC_LEX_OP_REL_LT: |
| 4732 | case BC_LEX_OP_REL_GT: |
| 4733 | case BC_LEX_OP_BOOL_NOT: |
| 4734 | case BC_LEX_OP_BOOL_OR: |
| 4735 | case BC_LEX_OP_BOOL_AND: |
| 4736 | { |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 4737 | if (((t == BC_LEX_OP_BOOL_NOT) != bin_last) |
| 4738 | || (t != BC_LEX_OP_BOOL_NOT && prev == BC_INST_BOOL_NOT) |
| 4739 | ) { |
Denys Vlasenko | 24fb2cd | 2018-12-05 16:03:46 +0100 | [diff] [blame] | 4740 | return bc_error_bad_expression(); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4741 | } |
| 4742 | |
| 4743 | nrelops += t >= BC_LEX_OP_REL_EQ && t <= BC_LEX_OP_REL_GT; |
Denys Vlasenko | 0154d78 | 2018-12-14 23:32:51 +0100 | [diff] [blame] | 4744 | prev = BC_TOKEN_2_INST(t); |
Denys Vlasenko | 7b1df3d | 2018-12-14 23:12:48 +0100 | [diff] [blame] | 4745 | bc_parse_operator(p, t, ops_bgn, &nexprs); |
| 4746 | s = zbc_lex_next(&p->l); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4747 | rprn = get_token = false; |
| 4748 | bin_last = t != BC_LEX_OP_BOOL_NOT; |
| 4749 | |
| 4750 | break; |
| 4751 | } |
| 4752 | |
| 4753 | case BC_LEX_LPAREN: |
| 4754 | { |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 4755 | if (BC_PARSE_LEAF(prev, rprn)) |
Denys Vlasenko | 24fb2cd | 2018-12-05 16:03:46 +0100 | [diff] [blame] | 4756 | return bc_error_bad_expression(); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4757 | ++nparens; |
| 4758 | paren_expr = rprn = bin_last = false; |
| 4759 | get_token = true; |
| 4760 | bc_vec_push(&p->ops, &t); |
| 4761 | |
| 4762 | break; |
| 4763 | } |
| 4764 | |
| 4765 | case BC_LEX_RPAREN: |
| 4766 | { |
| 4767 | if (bin_last || prev == BC_INST_BOOL_NOT) |
Denys Vlasenko | 24fb2cd | 2018-12-05 16:03:46 +0100 | [diff] [blame] | 4768 | return bc_error_bad_expression(); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4769 | |
| 4770 | if (nparens == 0) { |
| 4771 | s = BC_STATUS_SUCCESS; |
| 4772 | done = true; |
| 4773 | get_token = false; |
| 4774 | break; |
| 4775 | } |
Denys Vlasenko | 17df882 | 2018-12-14 23:00:24 +0100 | [diff] [blame] | 4776 | else if (!paren_expr) { |
| 4777 | dbg_lex_done("%s:%d done (returning EMPTY_EXP)", __func__, __LINE__); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4778 | return BC_STATUS_PARSE_EMPTY_EXP; |
Denys Vlasenko | 17df882 | 2018-12-14 23:00:24 +0100 | [diff] [blame] | 4779 | } |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4780 | |
| 4781 | --nparens; |
| 4782 | paren_expr = rprn = true; |
| 4783 | get_token = bin_last = false; |
| 4784 | |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 4785 | s = zbc_parse_rightParen(p, ops_bgn, &nexprs); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4786 | |
| 4787 | break; |
| 4788 | } |
| 4789 | |
| 4790 | case BC_LEX_NAME: |
| 4791 | { |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 4792 | if (BC_PARSE_LEAF(prev, rprn)) |
Denys Vlasenko | 24fb2cd | 2018-12-05 16:03:46 +0100 | [diff] [blame] | 4793 | return bc_error_bad_expression(); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4794 | paren_expr = true; |
| 4795 | rprn = get_token = bin_last = false; |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 4796 | s = zbc_parse_name(p, &prev, flags & ~BC_PARSE_NOCALL); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4797 | ++nexprs; |
| 4798 | |
| 4799 | break; |
| 4800 | } |
| 4801 | |
| 4802 | case BC_LEX_NUMBER: |
| 4803 | { |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 4804 | if (BC_PARSE_LEAF(prev, rprn)) |
Denys Vlasenko | 24fb2cd | 2018-12-05 16:03:46 +0100 | [diff] [blame] | 4805 | return bc_error_bad_expression(); |
Denys Vlasenko | 9dc5d08 | 2018-12-16 18:43:51 +0100 | [diff] [blame] | 4806 | bc_parse_number(p); |
| 4807 | nexprs++; |
| 4808 | prev = BC_INST_NUM; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4809 | paren_expr = get_token = true; |
| 4810 | rprn = bin_last = false; |
| 4811 | |
| 4812 | break; |
| 4813 | } |
| 4814 | |
| 4815 | case BC_LEX_KEY_IBASE: |
| 4816 | case BC_LEX_KEY_LAST: |
| 4817 | case BC_LEX_KEY_OBASE: |
| 4818 | { |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 4819 | if (BC_PARSE_LEAF(prev, rprn)) |
Denys Vlasenko | 24fb2cd | 2018-12-05 16:03:46 +0100 | [diff] [blame] | 4820 | return bc_error_bad_expression(); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4821 | prev = (char) (t - BC_LEX_KEY_IBASE + BC_INST_IBASE); |
| 4822 | bc_parse_push(p, (char) prev); |
| 4823 | |
| 4824 | paren_expr = get_token = true; |
| 4825 | rprn = bin_last = false; |
| 4826 | ++nexprs; |
| 4827 | |
| 4828 | break; |
| 4829 | } |
| 4830 | |
| 4831 | case BC_LEX_KEY_LENGTH: |
| 4832 | case BC_LEX_KEY_SQRT: |
| 4833 | { |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 4834 | if (BC_PARSE_LEAF(prev, rprn)) |
Denys Vlasenko | 24fb2cd | 2018-12-05 16:03:46 +0100 | [diff] [blame] | 4835 | return bc_error_bad_expression(); |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 4836 | s = zbc_parse_builtin(p, t, flags, &prev); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4837 | paren_expr = true; |
| 4838 | rprn = get_token = bin_last = false; |
| 4839 | ++nexprs; |
| 4840 | |
| 4841 | break; |
| 4842 | } |
| 4843 | |
| 4844 | case BC_LEX_KEY_READ: |
| 4845 | { |
| 4846 | if (BC_PARSE_LEAF(prev, rprn)) |
Denys Vlasenko | 24fb2cd | 2018-12-05 16:03:46 +0100 | [diff] [blame] | 4847 | return bc_error_bad_expression(); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4848 | else if (flags & BC_PARSE_NOREAD) |
Denys Vlasenko | 24fb2cd | 2018-12-05 16:03:46 +0100 | [diff] [blame] | 4849 | s = bc_error_nested_read_call(); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4850 | else |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 4851 | s = zbc_parse_read(p); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4852 | |
| 4853 | paren_expr = true; |
| 4854 | rprn = get_token = bin_last = false; |
| 4855 | ++nexprs; |
| 4856 | prev = BC_INST_READ; |
| 4857 | |
| 4858 | break; |
| 4859 | } |
| 4860 | |
| 4861 | case BC_LEX_KEY_SCALE: |
| 4862 | { |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 4863 | if (BC_PARSE_LEAF(prev, rprn)) |
Denys Vlasenko | 24fb2cd | 2018-12-05 16:03:46 +0100 | [diff] [blame] | 4864 | return bc_error_bad_expression(); |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 4865 | s = zbc_parse_scale(p, &prev, flags); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4866 | paren_expr = true; |
| 4867 | rprn = get_token = bin_last = false; |
| 4868 | ++nexprs; |
| 4869 | prev = BC_INST_SCALE; |
| 4870 | |
| 4871 | break; |
| 4872 | } |
| 4873 | |
| 4874 | default: |
| 4875 | { |
Denys Vlasenko | 24fb2cd | 2018-12-05 16:03:46 +0100 | [diff] [blame] | 4876 | s = bc_error_bad_token(); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4877 | break; |
| 4878 | } |
| 4879 | } |
| 4880 | |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 4881 | if (!s && get_token) s = zbc_lex_next(&p->l); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4882 | } |
| 4883 | |
| 4884 | if (s) return s; |
Denys Vlasenko | d38af48 | 2018-12-04 19:11:02 +0100 | [diff] [blame] | 4885 | if (G_interrupt) return BC_STATUS_FAILURE; // ^C: stop parsing |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4886 | |
| 4887 | while (p->ops.len > ops_bgn) { |
| 4888 | |
| 4889 | top = BC_PARSE_TOP_OP(p); |
| 4890 | assign = top >= BC_LEX_OP_ASSIGN_POWER && top <= BC_LEX_OP_ASSIGN; |
| 4891 | |
| 4892 | if (top == BC_LEX_LPAREN || top == BC_LEX_RPAREN) |
Denys Vlasenko | 24fb2cd | 2018-12-05 16:03:46 +0100 | [diff] [blame] | 4893 | return bc_error_bad_expression(); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4894 | |
Denys Vlasenko | 0154d78 | 2018-12-14 23:32:51 +0100 | [diff] [blame] | 4895 | bc_parse_push(p, BC_TOKEN_2_INST(top)); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4896 | |
| 4897 | nexprs -= top != BC_LEX_OP_BOOL_NOT && top != BC_LEX_NEG; |
| 4898 | bc_vec_pop(&p->ops); |
| 4899 | } |
| 4900 | |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 4901 | if (prev == BC_INST_BOOL_NOT || nexprs != 1) |
Denys Vlasenko | 24fb2cd | 2018-12-05 16:03:46 +0100 | [diff] [blame] | 4902 | return bc_error_bad_expression(); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4903 | |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 4904 | //TODO: why is this needed at all? |
Denys Vlasenko | 18c6b54 | 2018-12-07 12:57:32 +0100 | [diff] [blame] | 4905 | // next is BcParseNext, byte array of up to 4 BC_LEX's, packed into 32-bit word |
| 4906 | for (;;) { |
| 4907 | if (t == (next & 0x7f)) |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 4908 | goto ok; |
Denys Vlasenko | 18c6b54 | 2018-12-07 12:57:32 +0100 | [diff] [blame] | 4909 | if (next & 0x80) // last element? |
| 4910 | break; |
| 4911 | next >>= 8; |
| 4912 | } |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 4913 | if (t != BC_LEX_KEY_ELSE) |
| 4914 | return bc_error_bad_expression(); |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 4915 | ok: |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4916 | |
| 4917 | if (!(flags & BC_PARSE_REL) && nrelops) { |
Denys Vlasenko | 0064679 | 2018-12-05 18:12:27 +0100 | [diff] [blame] | 4918 | s = bc_POSIX_does_not_allow("comparison operators outside if or loops"); |
Denys Vlasenko | 12b9eaf | 2018-12-11 23:50:14 +0100 | [diff] [blame] | 4919 | ERROR_RETURN(if (s) return s;) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4920 | } |
| 4921 | else if ((flags & BC_PARSE_REL) && nrelops > 1) { |
Denys Vlasenko | a6f84e1 | 2018-12-06 11:10:11 +0100 | [diff] [blame] | 4922 | s = bc_POSIX_requires("exactly one comparison operator per condition"); |
Denys Vlasenko | 12b9eaf | 2018-12-11 23:50:14 +0100 | [diff] [blame] | 4923 | ERROR_RETURN(if (s) return s;) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4924 | } |
| 4925 | |
| 4926 | if (flags & BC_PARSE_PRINT) { |
| 4927 | if (paren_first || !assign) bc_parse_push(p, BC_INST_PRINT); |
| 4928 | bc_parse_push(p, BC_INST_POP); |
| 4929 | } |
| 4930 | |
Denys Vlasenko | 17df882 | 2018-12-14 23:00:24 +0100 | [diff] [blame] | 4931 | dbg_lex_done("%s:%d done", __func__, __LINE__); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4932 | return s; |
| 4933 | } |
| 4934 | |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4935 | #undef zbc_parse_expr |
| 4936 | static BC_STATUS zbc_parse_expr(BcParse *p, uint8_t flags, BcParseNext next) |
Denys Vlasenko | 050b0fe | 2018-12-05 22:40:44 +0100 | [diff] [blame] | 4937 | { |
| 4938 | BcStatus s; |
| 4939 | |
| 4940 | s = bc_parse_expr_empty_ok(p, flags, next); |
| 4941 | if (s == BC_STATUS_PARSE_EMPTY_EXP) |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4942 | RETURN_STATUS(bc_error("empty expression")); |
| 4943 | RETURN_STATUS(s); |
Denys Vlasenko | 050b0fe | 2018-12-05 22:40:44 +0100 | [diff] [blame] | 4944 | } |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 4945 | #if ERRORS_ARE_FATAL |
| 4946 | # define zbc_parse_expr(...) (zbc_parse_expr(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 4947 | #endif |
Denys Vlasenko | 050b0fe | 2018-12-05 22:40:44 +0100 | [diff] [blame] | 4948 | |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4949 | #endif // ENABLE_BC |
| 4950 | |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 4951 | #if ENABLE_DC |
Denys Vlasenko | cca79a0 | 2018-12-05 21:15:46 +0100 | [diff] [blame] | 4952 | |
| 4953 | #define DC_PARSE_BUF_LEN ((int) (sizeof(uint32_t) * CHAR_BIT)) |
| 4954 | |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 4955 | static BC_STATUS zdc_parse_register(BcParse *p) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4956 | { |
| 4957 | BcStatus s; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4958 | |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 4959 | s = zbc_lex_next(&p->l); |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 4960 | if (s) RETURN_STATUS(s); |
| 4961 | if (p->l.t.t != BC_LEX_NAME) RETURN_STATUS(bc_error_bad_token()); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4962 | |
Denys Vlasenko | e6c40c4 | 2018-12-16 20:32:58 +0100 | [diff] [blame] | 4963 | bc_parse_pushName(p, p->l.t.v.v); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4964 | |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 4965 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4966 | } |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 4967 | #if ERRORS_ARE_FATAL |
| 4968 | # define zdc_parse_register(...) (zdc_parse_register(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 4969 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4970 | |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 4971 | static BC_STATUS zdc_parse_string(BcParse *p) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4972 | { |
| 4973 | char *str, *name, b[DC_PARSE_BUF_LEN + 1]; |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 4974 | size_t idx, len = G.prog.strs.len; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4975 | |
| 4976 | sprintf(b, "%0*zu", DC_PARSE_BUF_LEN, len); |
| 4977 | name = xstrdup(b); |
| 4978 | |
| 4979 | str = xstrdup(p->l.t.v.v); |
| 4980 | bc_parse_push(p, BC_INST_STR); |
| 4981 | bc_parse_pushIndex(p, len); |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 4982 | bc_vec_push(&G.prog.strs, &str); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4983 | bc_parse_addFunc(p, name, &idx); |
| 4984 | |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 4985 | RETURN_STATUS(zbc_lex_next(&p->l)); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4986 | } |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 4987 | #if ERRORS_ARE_FATAL |
| 4988 | # define zdc_parse_string(...) (zdc_parse_string(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 4989 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4990 | |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 4991 | static BC_STATUS zdc_parse_mem(BcParse *p, uint8_t inst, bool name, bool store) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4992 | { |
| 4993 | BcStatus s; |
| 4994 | |
| 4995 | bc_parse_push(p, inst); |
| 4996 | if (name) { |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 4997 | s = zdc_parse_register(p); |
| 4998 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 4999 | } |
| 5000 | |
| 5001 | if (store) { |
| 5002 | bc_parse_push(p, BC_INST_SWAP); |
| 5003 | bc_parse_push(p, BC_INST_ASSIGN); |
| 5004 | bc_parse_push(p, BC_INST_POP); |
| 5005 | } |
| 5006 | |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 5007 | RETURN_STATUS(zbc_lex_next(&p->l)); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5008 | } |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 5009 | #if ERRORS_ARE_FATAL |
| 5010 | # define zdc_parse_mem(...) (zdc_parse_mem(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 5011 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5012 | |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 5013 | static BC_STATUS zdc_parse_cond(BcParse *p, uint8_t inst) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5014 | { |
| 5015 | BcStatus s; |
| 5016 | |
| 5017 | bc_parse_push(p, inst); |
| 5018 | bc_parse_push(p, BC_INST_EXEC_COND); |
| 5019 | |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 5020 | s = zdc_parse_register(p); |
| 5021 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5022 | |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 5023 | s = zbc_lex_next(&p->l); |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 5024 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5025 | |
| 5026 | if (p->l.t.t == BC_LEX_ELSE) { |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 5027 | s = zdc_parse_register(p); |
| 5028 | if (s) RETURN_STATUS(s); |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 5029 | s = zbc_lex_next(&p->l); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5030 | } |
| 5031 | else |
| 5032 | bc_parse_push(p, BC_PARSE_STREND); |
| 5033 | |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 5034 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5035 | } |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 5036 | #if ERRORS_ARE_FATAL |
| 5037 | # define zdc_parse_cond(...) (zdc_parse_cond(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 5038 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5039 | |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 5040 | static BC_STATUS zdc_parse_token(BcParse *p, BcLexType t, uint8_t flags) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5041 | { |
| 5042 | BcStatus s = BC_STATUS_SUCCESS; |
| 5043 | BcInst prev; |
| 5044 | uint8_t inst; |
| 5045 | bool assign, get_token = false; |
| 5046 | |
| 5047 | switch (t) { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5048 | case BC_LEX_OP_REL_EQ: |
| 5049 | case BC_LEX_OP_REL_LE: |
| 5050 | case BC_LEX_OP_REL_GE: |
| 5051 | case BC_LEX_OP_REL_NE: |
| 5052 | case BC_LEX_OP_REL_LT: |
| 5053 | case BC_LEX_OP_REL_GT: |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 5054 | s = zdc_parse_cond(p, t - BC_LEX_OP_REL_EQ + BC_INST_REL_EQ); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5055 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5056 | case BC_LEX_SCOLON: |
| 5057 | case BC_LEX_COLON: |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 5058 | s = zdc_parse_mem(p, BC_INST_ARRAY_ELEM, true, t == BC_LEX_COLON); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5059 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5060 | case BC_LEX_STR: |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 5061 | s = zdc_parse_string(p); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5062 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5063 | case BC_LEX_NEG: |
| 5064 | case BC_LEX_NUMBER: |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5065 | if (t == BC_LEX_NEG) { |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 5066 | s = zbc_lex_next(&p->l); |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 5067 | if (s) RETURN_STATUS(s); |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 5068 | if (p->l.t.t != BC_LEX_NUMBER) |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 5069 | RETURN_STATUS(bc_error_bad_token()); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5070 | } |
Denys Vlasenko | 9dc5d08 | 2018-12-16 18:43:51 +0100 | [diff] [blame] | 5071 | bc_parse_number(p); |
| 5072 | prev = BC_INST_NUM; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5073 | if (t == BC_LEX_NEG) bc_parse_push(p, BC_INST_NEG); |
| 5074 | get_token = true; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5075 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5076 | case BC_LEX_KEY_READ: |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5077 | if (flags & BC_PARSE_NOREAD) |
Denys Vlasenko | 24fb2cd | 2018-12-05 16:03:46 +0100 | [diff] [blame] | 5078 | s = bc_error_nested_read_call(); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5079 | else |
| 5080 | bc_parse_push(p, BC_INST_READ); |
| 5081 | get_token = true; |
| 5082 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5083 | case BC_LEX_OP_ASSIGN: |
| 5084 | case BC_LEX_STORE_PUSH: |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5085 | assign = t == BC_LEX_OP_ASSIGN; |
| 5086 | inst = assign ? BC_INST_VAR : BC_INST_PUSH_TO_VAR; |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 5087 | s = zdc_parse_mem(p, inst, true, assign); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5088 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5089 | case BC_LEX_LOAD: |
| 5090 | case BC_LEX_LOAD_POP: |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5091 | inst = t == BC_LEX_LOAD_POP ? BC_INST_PUSH_VAR : BC_INST_LOAD; |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 5092 | s = zdc_parse_mem(p, inst, true, false); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5093 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5094 | case BC_LEX_STORE_IBASE: |
| 5095 | case BC_LEX_STORE_SCALE: |
| 5096 | case BC_LEX_STORE_OBASE: |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5097 | inst = t - BC_LEX_STORE_IBASE + BC_INST_IBASE; |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 5098 | s = zdc_parse_mem(p, inst, false, true); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5099 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5100 | default: |
Denys Vlasenko | 24fb2cd | 2018-12-05 16:03:46 +0100 | [diff] [blame] | 5101 | s = bc_error_bad_token(); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5102 | get_token = true; |
| 5103 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5104 | } |
| 5105 | |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 5106 | if (!s && get_token) s = zbc_lex_next(&p->l); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5107 | |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 5108 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5109 | } |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 5110 | #if ERRORS_ARE_FATAL |
| 5111 | # define zdc_parse_token(...) (zdc_parse_token(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 5112 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5113 | |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 5114 | static BC_STATUS zdc_parse_expr(BcParse *p, uint8_t flags) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5115 | { |
| 5116 | BcStatus s = BC_STATUS_SUCCESS; |
| 5117 | BcInst inst; |
| 5118 | BcLexType t; |
| 5119 | |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5120 | for (t = p->l.t.t; !s && t != BC_LEX_EOF; t = p->l.t.t) { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5121 | inst = dc_parse_insts[t]; |
| 5122 | |
| 5123 | if (inst != BC_INST_INVALID) { |
| 5124 | bc_parse_push(p, inst); |
Denys Vlasenko | 9a34e89 | 2018-12-12 13:58:55 +0100 | [diff] [blame] | 5125 | s = zbc_lex_next(&p->l); |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 5126 | } else |
| 5127 | s = zdc_parse_token(p, t, flags); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5128 | } |
| 5129 | |
| 5130 | if (!s && p->l.t.t == BC_LEX_EOF && (flags & BC_PARSE_NOCALL)) |
| 5131 | bc_parse_push(p, BC_INST_POP_EXEC); |
| 5132 | |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 5133 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5134 | } |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 5135 | #if ERRORS_ARE_FATAL |
| 5136 | # define zdc_parse_expr(...) (zdc_parse_expr(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 5137 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5138 | |
Denys Vlasenko | c0ef23c | 2018-12-12 23:03:10 +0100 | [diff] [blame] | 5139 | static BC_STATUS zdc_parse_parse(BcParse *p) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5140 | { |
| 5141 | BcStatus s; |
| 5142 | |
| 5143 | if (p->l.t.t == BC_LEX_EOF) |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 5144 | s = bc_error("end of file"); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5145 | else |
Denys Vlasenko | 8cd468f | 2018-12-12 14:54:38 +0100 | [diff] [blame] | 5146 | s = zdc_parse_expr(p, 0); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5147 | |
Denys Vlasenko | d38af48 | 2018-12-04 19:11:02 +0100 | [diff] [blame] | 5148 | if (s || G_interrupt) { |
| 5149 | bc_parse_reset(p); |
| 5150 | s = BC_STATUS_FAILURE; |
| 5151 | } |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5152 | |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 5153 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5154 | } |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 5155 | #if ERRORS_ARE_FATAL |
| 5156 | # define zdc_parse_parse(...) (zdc_parse_parse(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 5157 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5158 | |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5159 | #endif // ENABLE_DC |
| 5160 | |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 5161 | static BC_STATUS zcommon_parse_expr(BcParse *p, uint8_t flags) |
Denys Vlasenko | f6c1da5 | 2018-12-02 17:36:00 +0100 | [diff] [blame] | 5162 | { |
| 5163 | if (IS_BC) { |
Denys Vlasenko | 99b3762 | 2018-12-15 20:06:59 +0100 | [diff] [blame] | 5164 | IF_BC(RETURN_STATUS(zbc_parse_expr(p, flags, bc_parse_next_read))); |
Denys Vlasenko | f6c1da5 | 2018-12-02 17:36:00 +0100 | [diff] [blame] | 5165 | } else { |
Denys Vlasenko | 99b3762 | 2018-12-15 20:06:59 +0100 | [diff] [blame] | 5166 | IF_DC(RETURN_STATUS(zdc_parse_expr(p, flags))); |
Denys Vlasenko | f6c1da5 | 2018-12-02 17:36:00 +0100 | [diff] [blame] | 5167 | } |
| 5168 | } |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 5169 | #if ERRORS_ARE_FATAL |
| 5170 | # define zcommon_parse_expr(...) (zcommon_parse_expr(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 5171 | #endif |
Denys Vlasenko | f6c1da5 | 2018-12-02 17:36:00 +0100 | [diff] [blame] | 5172 | |
Denys Vlasenko | df51539 | 2018-12-02 19:27:48 +0100 | [diff] [blame] | 5173 | static BcVec* bc_program_search(char *id, bool var) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5174 | { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5175 | BcId e, *ptr; |
| 5176 | BcVec *v, *map; |
| 5177 | size_t i; |
| 5178 | BcResultData data; |
Denys Vlasenko | a02f844 | 2018-12-03 20:35:16 +0100 | [diff] [blame] | 5179 | int new; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5180 | |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 5181 | v = var ? &G.prog.vars : &G.prog.arrs; |
| 5182 | map = var ? &G.prog.var_map : &G.prog.arr_map; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5183 | |
| 5184 | e.name = id; |
| 5185 | e.idx = v->len; |
Denys Vlasenko | a02f844 | 2018-12-03 20:35:16 +0100 | [diff] [blame] | 5186 | new = bc_map_insert(map, &e, &i); // 1 if insertion was successful |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5187 | |
| 5188 | if (new) { |
| 5189 | bc_array_init(&data.v, var); |
| 5190 | bc_vec_push(v, &data.v); |
| 5191 | } |
| 5192 | |
| 5193 | ptr = bc_vec_item(map, i); |
| 5194 | if (new) ptr->name = xstrdup(e.name); |
Denys Vlasenko | df51539 | 2018-12-02 19:27:48 +0100 | [diff] [blame] | 5195 | return bc_vec_item(v, ptr->idx); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5196 | } |
| 5197 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5198 | static BC_STATUS zbc_program_num(BcResult *r, BcNum **num, bool hex) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5199 | { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5200 | switch (r->t) { |
| 5201 | |
| 5202 | case BC_RESULT_STR: |
| 5203 | case BC_RESULT_TEMP: |
| 5204 | case BC_RESULT_IBASE: |
| 5205 | case BC_RESULT_SCALE: |
| 5206 | case BC_RESULT_OBASE: |
| 5207 | { |
| 5208 | *num = &r->d.n; |
| 5209 | break; |
| 5210 | } |
| 5211 | |
| 5212 | case BC_RESULT_CONSTANT: |
| 5213 | { |
Denys Vlasenko | fa35e59 | 2018-12-10 20:17:24 +0100 | [diff] [blame] | 5214 | BcStatus s; |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 5215 | char **str = bc_vec_item(&G.prog.consts, r->d.id.idx); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5216 | size_t base_t, len = strlen(*str); |
| 5217 | BcNum *base; |
| 5218 | |
| 5219 | bc_num_init(&r->d.n, len); |
| 5220 | |
| 5221 | hex = hex && len == 1; |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 5222 | base = hex ? &G.prog.hexb : &G.prog.ib; |
| 5223 | base_t = hex ? BC_NUM_MAX_IBASE : G.prog.ib_t; |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5224 | s = zbc_num_parse(&r->d.n, *str, base, base_t); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5225 | |
| 5226 | if (s) { |
| 5227 | bc_num_free(&r->d.n); |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5228 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5229 | } |
| 5230 | |
| 5231 | *num = &r->d.n; |
| 5232 | r->t = BC_RESULT_TEMP; |
| 5233 | |
| 5234 | break; |
| 5235 | } |
| 5236 | |
| 5237 | case BC_RESULT_VAR: |
| 5238 | case BC_RESULT_ARRAY: |
| 5239 | case BC_RESULT_ARRAY_ELEM: |
| 5240 | { |
| 5241 | BcVec *v; |
| 5242 | |
Denys Vlasenko | df51539 | 2018-12-02 19:27:48 +0100 | [diff] [blame] | 5243 | v = bc_program_search(r->d.id.name, r->t == BC_RESULT_VAR); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5244 | |
| 5245 | if (r->t == BC_RESULT_ARRAY_ELEM) { |
| 5246 | v = bc_vec_top(v); |
| 5247 | if (v->len <= r->d.id.idx) bc_array_expand(v, r->d.id.idx + 1); |
| 5248 | *num = bc_vec_item(v, r->d.id.idx); |
| 5249 | } |
| 5250 | else |
| 5251 | *num = bc_vec_top(v); |
| 5252 | |
| 5253 | break; |
| 5254 | } |
| 5255 | |
| 5256 | case BC_RESULT_LAST: |
| 5257 | { |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 5258 | *num = &G.prog.last; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5259 | break; |
| 5260 | } |
| 5261 | |
| 5262 | case BC_RESULT_ONE: |
| 5263 | { |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 5264 | *num = &G.prog.one; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5265 | break; |
| 5266 | } |
| 5267 | } |
| 5268 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5269 | RETURN_STATUS(BC_STATUS_SUCCESS); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5270 | } |
Denys Vlasenko | fa35e59 | 2018-12-10 20:17:24 +0100 | [diff] [blame] | 5271 | #if ERRORS_ARE_FATAL |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5272 | # define zbc_program_num(...) (zbc_program_num(__VA_ARGS__), BC_STATUS_SUCCESS) |
Denys Vlasenko | fa35e59 | 2018-12-10 20:17:24 +0100 | [diff] [blame] | 5273 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5274 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5275 | static BC_STATUS zbc_program_binOpPrep(BcResult **l, BcNum **ln, |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5276 | BcResult **r, BcNum **rn, bool assign) |
| 5277 | { |
| 5278 | BcStatus s; |
| 5279 | bool hex; |
| 5280 | BcResultType lt, rt; |
| 5281 | |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 5282 | if (!BC_PROG_STACK(&G.prog.results, 2)) |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5283 | RETURN_STATUS(bc_error_stack_has_too_few_elements()); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5284 | |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 5285 | *r = bc_vec_item_rev(&G.prog.results, 0); |
| 5286 | *l = bc_vec_item_rev(&G.prog.results, 1); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5287 | |
| 5288 | lt = (*l)->t; |
| 5289 | rt = (*r)->t; |
| 5290 | hex = assign && (lt == BC_RESULT_IBASE || lt == BC_RESULT_OBASE); |
| 5291 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5292 | s = zbc_program_num(*l, ln, false); |
| 5293 | if (s) RETURN_STATUS(s); |
| 5294 | s = zbc_program_num(*r, rn, hex); |
| 5295 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5296 | |
| 5297 | // We run this again under these conditions in case any vector has been |
| 5298 | // reallocated out from under the BcNums or arrays we had. |
| 5299 | if (lt == rt && (lt == BC_RESULT_VAR || lt == BC_RESULT_ARRAY_ELEM)) { |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5300 | s = zbc_program_num(*l, ln, false); |
| 5301 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5302 | } |
| 5303 | |
| 5304 | if (!BC_PROG_NUM((*l), (*ln)) && (!assign || (*l)->t != BC_RESULT_VAR)) |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5305 | RETURN_STATUS(bc_error_variable_is_wrong_type()); |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 5306 | if (!assign && !BC_PROG_NUM((*r), (*ln))) |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5307 | RETURN_STATUS(bc_error_variable_is_wrong_type()); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5308 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5309 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5310 | } |
Denys Vlasenko | 628bf1b | 2018-12-10 20:41:05 +0100 | [diff] [blame] | 5311 | #if ERRORS_ARE_FATAL |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5312 | # define zbc_program_binOpPrep(...) (zbc_program_binOpPrep(__VA_ARGS__), BC_STATUS_SUCCESS) |
Denys Vlasenko | 628bf1b | 2018-12-10 20:41:05 +0100 | [diff] [blame] | 5313 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5314 | |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 5315 | static void bc_program_binOpRetire(BcResult *r) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5316 | { |
| 5317 | r->t = BC_RESULT_TEMP; |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 5318 | bc_vec_pop(&G.prog.results); |
| 5319 | bc_vec_pop(&G.prog.results); |
| 5320 | bc_vec_push(&G.prog.results, r); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5321 | } |
| 5322 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5323 | static BC_STATUS zbc_program_prep(BcResult **r, BcNum **n) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5324 | { |
| 5325 | BcStatus s; |
| 5326 | |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 5327 | if (!BC_PROG_STACK(&G.prog.results, 1)) |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5328 | RETURN_STATUS(bc_error_stack_has_too_few_elements()); |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 5329 | *r = bc_vec_top(&G.prog.results); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5330 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5331 | s = zbc_program_num(*r, n, false); |
| 5332 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5333 | |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 5334 | if (!BC_PROG_NUM((*r), (*n))) |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5335 | RETURN_STATUS(bc_error_variable_is_wrong_type()); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5336 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5337 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5338 | } |
Denys Vlasenko | fa35e59 | 2018-12-10 20:17:24 +0100 | [diff] [blame] | 5339 | #if ERRORS_ARE_FATAL |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5340 | # define zbc_program_prep(...) (zbc_program_prep(__VA_ARGS__), BC_STATUS_SUCCESS) |
Denys Vlasenko | fa35e59 | 2018-12-10 20:17:24 +0100 | [diff] [blame] | 5341 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5342 | |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 5343 | static void bc_program_retire(BcResult *r, BcResultType t) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5344 | { |
| 5345 | r->t = t; |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 5346 | bc_vec_pop(&G.prog.results); |
| 5347 | bc_vec_push(&G.prog.results, r); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5348 | } |
| 5349 | |
Denys Vlasenko | 259137d | 2018-12-11 19:42:05 +0100 | [diff] [blame] | 5350 | static BC_STATUS zbc_program_op(char inst) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5351 | { |
| 5352 | BcStatus s; |
| 5353 | BcResult *opd1, *opd2, res; |
| 5354 | BcNum *n1, *n2 = NULL; |
| 5355 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5356 | s = zbc_program_binOpPrep(&opd1, &n1, &opd2, &n2, false); |
Denys Vlasenko | 259137d | 2018-12-11 19:42:05 +0100 | [diff] [blame] | 5357 | if (s) RETURN_STATUS(s); |
Denys Vlasenko | e20e00d | 2018-12-09 11:44:20 +0100 | [diff] [blame] | 5358 | bc_num_init_DEF_SIZE(&res.d.n); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5359 | |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 5360 | s = BC_STATUS_SUCCESS; |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 5361 | ERROR_RETURN(s =) zbc_program_ops[inst - BC_INST_POWER](n1, n2, &res.d.n, G.prog.scale); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5362 | if (s) goto err; |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 5363 | bc_program_binOpRetire(&res); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5364 | |
Denys Vlasenko | 259137d | 2018-12-11 19:42:05 +0100 | [diff] [blame] | 5365 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5366 | |
| 5367 | err: |
| 5368 | bc_num_free(&res.d.n); |
Denys Vlasenko | 259137d | 2018-12-11 19:42:05 +0100 | [diff] [blame] | 5369 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5370 | } |
Denys Vlasenko | 259137d | 2018-12-11 19:42:05 +0100 | [diff] [blame] | 5371 | #if ERRORS_ARE_FATAL |
| 5372 | # define zbc_program_op(...) (zbc_program_op(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 5373 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5374 | |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 5375 | static BC_STATUS zbc_program_read(void) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5376 | { |
Denys Vlasenko | 0409ad3 | 2018-12-05 16:39:22 +0100 | [diff] [blame] | 5377 | const char *sv_file; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5378 | BcStatus s; |
| 5379 | BcParse parse; |
| 5380 | BcVec buf; |
| 5381 | BcInstPtr ip; |
Denys Vlasenko | 69171dc | 2018-12-12 00:29:24 +0100 | [diff] [blame] | 5382 | BcFunc *f; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5383 | |
Denys Vlasenko | 69171dc | 2018-12-12 00:29:24 +0100 | [diff] [blame] | 5384 | if (G.in_read) |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 5385 | RETURN_STATUS(bc_error_nested_read_call()); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5386 | |
Denys Vlasenko | 69171dc | 2018-12-12 00:29:24 +0100 | [diff] [blame] | 5387 | f = bc_program_func(BC_PROG_READ); |
Denys Vlasenko | 7d62801 | 2018-12-04 21:46:47 +0100 | [diff] [blame] | 5388 | bc_vec_pop_all(&f->code); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5389 | |
Denys Vlasenko | 0409ad3 | 2018-12-05 16:39:22 +0100 | [diff] [blame] | 5390 | sv_file = G.prog.file; |
| 5391 | G.prog.file = NULL; |
Denys Vlasenko | 69171dc | 2018-12-12 00:29:24 +0100 | [diff] [blame] | 5392 | G.in_read = 1; |
Denys Vlasenko | 0409ad3 | 2018-12-05 16:39:22 +0100 | [diff] [blame] | 5393 | |
Denys Vlasenko | 82ea67f | 2018-12-13 19:23:45 +0100 | [diff] [blame] | 5394 | bc_char_vec_init(&buf); |
Denys Vlasenko | 8a89247 | 2018-12-12 22:43:58 +0100 | [diff] [blame] | 5395 | bc_read_line(&buf); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5396 | |
Denys Vlasenko | c2265f5 | 2018-12-12 23:10:08 +0100 | [diff] [blame] | 5397 | bc_parse_create(&parse, BC_PROG_READ); |
Denys Vlasenko | 0409ad3 | 2018-12-05 16:39:22 +0100 | [diff] [blame] | 5398 | bc_lex_file(&parse.l); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5399 | |
Denys Vlasenko | f86e960 | 2018-12-14 17:01:56 +0100 | [diff] [blame] | 5400 | s = zbc_parse_text_init(&parse, buf.v); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5401 | if (s) goto exec_err; |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 5402 | s = zcommon_parse_expr(&parse, BC_PARSE_NOREAD); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5403 | if (s) goto exec_err; |
| 5404 | |
| 5405 | if (parse.l.t.t != BC_LEX_NLINE && parse.l.t.t != BC_LEX_EOF) { |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 5406 | s = bc_error("bad read() expression"); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5407 | goto exec_err; |
| 5408 | } |
| 5409 | |
| 5410 | ip.func = BC_PROG_READ; |
| 5411 | ip.idx = 0; |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 5412 | ip.len = G.prog.results.len; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5413 | |
| 5414 | // Update this pointer, just in case. |
Denys Vlasenko | 8fa1e8e | 2018-12-09 00:03:57 +0100 | [diff] [blame] | 5415 | f = bc_program_func(BC_PROG_READ); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5416 | |
| 5417 | bc_vec_pushByte(&f->code, BC_INST_POP_EXEC); |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 5418 | bc_vec_push(&G.prog.stack, &ip); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5419 | |
| 5420 | exec_err: |
| 5421 | bc_parse_free(&parse); |
Denys Vlasenko | 4dd3652 | 2018-12-11 22:26:38 +0100 | [diff] [blame] | 5422 | //io_err: |
Denys Vlasenko | 69171dc | 2018-12-12 00:29:24 +0100 | [diff] [blame] | 5423 | G.in_read = 0; |
Denys Vlasenko | 4dd3652 | 2018-12-11 22:26:38 +0100 | [diff] [blame] | 5424 | G.prog.file = sv_file; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5425 | bc_vec_free(&buf); |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 5426 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5427 | } |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 5428 | #if ERRORS_ARE_FATAL |
| 5429 | # define zbc_program_read(...) (zbc_program_read(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 5430 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5431 | |
| 5432 | static size_t bc_program_index(char *code, size_t *bgn) |
| 5433 | { |
| 5434 | char amt = code[(*bgn)++], i = 0; |
| 5435 | size_t res = 0; |
| 5436 | |
| 5437 | for (; i < amt; ++i, ++(*bgn)) |
| 5438 | res |= (((size_t)((int) code[*bgn]) & UCHAR_MAX) << (i * CHAR_BIT)); |
| 5439 | |
| 5440 | return res; |
| 5441 | } |
| 5442 | |
| 5443 | static char *bc_program_name(char *code, size_t *bgn) |
| 5444 | { |
| 5445 | size_t i; |
| 5446 | char c, *s, *str = code + *bgn, *ptr = strchr(str, BC_PARSE_STREND); |
| 5447 | |
| 5448 | s = xmalloc(ptr - str + 1); |
| 5449 | c = code[(*bgn)++]; |
| 5450 | |
| 5451 | for (i = 0; c != 0 && c != BC_PARSE_STREND; c = code[(*bgn)++], ++i) |
| 5452 | s[i] = c; |
| 5453 | |
| 5454 | s[i] = '\0'; |
| 5455 | |
| 5456 | return s; |
| 5457 | } |
| 5458 | |
Denys Vlasenko | 5f1b90b | 2018-12-08 23:18:06 +0100 | [diff] [blame] | 5459 | static void bc_program_printString(const char *str) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5460 | { |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 5461 | #if ENABLE_DC |
Denys Vlasenko | 9f657e0 | 2018-12-11 19:52:25 +0100 | [diff] [blame] | 5462 | if (!str[0]) { |
Denys Vlasenko | 2c6f563 | 2018-12-11 21:21:14 +0100 | [diff] [blame] | 5463 | // Example: echo '[]ap' | dc |
| 5464 | // should print two bytes: 0x00, 0x0A |
Denys Vlasenko | 00d7779 | 2018-11-30 23:13:42 +0100 | [diff] [blame] | 5465 | bb_putchar('\0'); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5466 | return; |
| 5467 | } |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 5468 | #endif |
Denys Vlasenko | 9f657e0 | 2018-12-11 19:52:25 +0100 | [diff] [blame] | 5469 | while (*str) { |
| 5470 | int c = *str++; |
| 5471 | if (c != '\\' || !*str) |
Denys Vlasenko | 00d7779 | 2018-11-30 23:13:42 +0100 | [diff] [blame] | 5472 | bb_putchar(c); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5473 | else { |
Denys Vlasenko | 9f657e0 | 2018-12-11 19:52:25 +0100 | [diff] [blame] | 5474 | c = *str++; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5475 | switch (c) { |
Denys Vlasenko | 9f657e0 | 2018-12-11 19:52:25 +0100 | [diff] [blame] | 5476 | case 'a': |
| 5477 | bb_putchar('\a'); |
| 5478 | break; |
| 5479 | case 'b': |
| 5480 | bb_putchar('\b'); |
| 5481 | break; |
| 5482 | case '\\': |
| 5483 | case 'e': |
| 5484 | bb_putchar('\\'); |
| 5485 | break; |
| 5486 | case 'f': |
| 5487 | bb_putchar('\f'); |
| 5488 | break; |
| 5489 | case 'n': |
| 5490 | bb_putchar('\n'); |
| 5491 | G.prog.nchars = SIZE_MAX; |
| 5492 | break; |
| 5493 | case 'r': |
| 5494 | bb_putchar('\r'); |
| 5495 | break; |
| 5496 | case 'q': |
| 5497 | bb_putchar('"'); |
| 5498 | break; |
| 5499 | case 't': |
| 5500 | bb_putchar('\t'); |
| 5501 | break; |
| 5502 | default: |
| 5503 | // Just print the backslash and following character. |
| 5504 | bb_putchar('\\'); |
| 5505 | ++G.prog.nchars; |
| 5506 | bb_putchar(c); |
| 5507 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5508 | } |
| 5509 | } |
Denys Vlasenko | 9f657e0 | 2018-12-11 19:52:25 +0100 | [diff] [blame] | 5510 | ++G.prog.nchars; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5511 | } |
| 5512 | } |
| 5513 | |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 5514 | static void bc_num_printNewline(void) |
| 5515 | { |
| 5516 | if (G.prog.nchars == G.prog.len - 1) { |
| 5517 | bb_putchar('\\'); |
| 5518 | bb_putchar('\n'); |
| 5519 | G.prog.nchars = 0; |
| 5520 | } |
| 5521 | } |
| 5522 | |
| 5523 | #if ENABLE_DC |
| 5524 | static FAST_FUNC void bc_num_printChar(size_t num, size_t width, bool radix) |
| 5525 | { |
| 5526 | (void) radix; |
| 5527 | bb_putchar((char) num); |
| 5528 | G.prog.nchars += width; |
| 5529 | } |
| 5530 | #endif |
| 5531 | |
| 5532 | static FAST_FUNC void bc_num_printDigits(size_t num, size_t width, bool radix) |
| 5533 | { |
| 5534 | size_t exp, pow; |
| 5535 | |
| 5536 | bc_num_printNewline(); |
| 5537 | bb_putchar(radix ? '.' : ' '); |
| 5538 | ++G.prog.nchars; |
| 5539 | |
| 5540 | bc_num_printNewline(); |
| 5541 | for (exp = 0, pow = 1; exp < width - 1; ++exp, pow *= 10) |
| 5542 | continue; |
| 5543 | |
| 5544 | for (exp = 0; exp < width; pow /= 10, ++G.prog.nchars, ++exp) { |
| 5545 | size_t dig; |
| 5546 | bc_num_printNewline(); |
| 5547 | dig = num / pow; |
| 5548 | num -= dig * pow; |
| 5549 | bb_putchar(((char) dig) + '0'); |
| 5550 | } |
| 5551 | } |
| 5552 | |
| 5553 | static FAST_FUNC void bc_num_printHex(size_t num, size_t width, bool radix) |
| 5554 | { |
| 5555 | if (radix) { |
| 5556 | bc_num_printNewline(); |
| 5557 | bb_putchar('.'); |
| 5558 | G.prog.nchars += 1; |
| 5559 | } |
| 5560 | |
| 5561 | bc_num_printNewline(); |
| 5562 | bb_putchar(bb_hexdigits_upcase[num]); |
| 5563 | G.prog.nchars += width; |
| 5564 | } |
| 5565 | |
| 5566 | static void bc_num_printDecimal(BcNum *n) |
| 5567 | { |
| 5568 | size_t i, rdx = n->rdx - 1; |
| 5569 | |
| 5570 | if (n->neg) bb_putchar('-'); |
| 5571 | G.prog.nchars += n->neg; |
| 5572 | |
| 5573 | for (i = n->len - 1; i < n->len; --i) |
| 5574 | bc_num_printHex((size_t) n->num[i], 1, i == rdx); |
| 5575 | } |
| 5576 | |
| 5577 | static BC_STATUS zbc_num_printNum(BcNum *n, BcNum *base, size_t width, BcNumDigitOp print) |
| 5578 | { |
| 5579 | BcStatus s; |
| 5580 | BcVec stack; |
| 5581 | BcNum intp, fracp, digit, frac_len; |
| 5582 | unsigned long dig, *ptr; |
| 5583 | size_t i; |
| 5584 | bool radix; |
| 5585 | |
| 5586 | if (n->len == 0) { |
| 5587 | print(0, width, false); |
| 5588 | RETURN_STATUS(BC_STATUS_SUCCESS); |
| 5589 | } |
| 5590 | |
| 5591 | bc_vec_init(&stack, sizeof(long), NULL); |
| 5592 | bc_num_init(&intp, n->len); |
| 5593 | bc_num_init(&fracp, n->rdx); |
| 5594 | bc_num_init(&digit, width); |
| 5595 | bc_num_init(&frac_len, BC_NUM_INT(n)); |
| 5596 | bc_num_copy(&intp, n); |
| 5597 | bc_num_one(&frac_len); |
| 5598 | |
| 5599 | bc_num_truncate(&intp, intp.rdx); |
| 5600 | s = zbc_num_sub(n, &intp, &fracp, 0); |
| 5601 | if (s) goto err; |
| 5602 | |
| 5603 | while (intp.len != 0) { |
| 5604 | s = zbc_num_divmod(&intp, base, &intp, &digit, 0); |
| 5605 | if (s) goto err; |
| 5606 | s = zbc_num_ulong(&digit, &dig); |
| 5607 | if (s) goto err; |
| 5608 | bc_vec_push(&stack, &dig); |
| 5609 | } |
| 5610 | |
| 5611 | for (i = 0; i < stack.len; ++i) { |
| 5612 | ptr = bc_vec_item_rev(&stack, i); |
| 5613 | print(*ptr, width, false); |
| 5614 | } |
| 5615 | |
| 5616 | if (!n->rdx) goto err; |
| 5617 | |
| 5618 | for (radix = true; frac_len.len <= n->rdx; radix = false) { |
| 5619 | s = zbc_num_mul(&fracp, base, &fracp, n->rdx); |
| 5620 | if (s) goto err; |
| 5621 | s = zbc_num_ulong(&fracp, &dig); |
| 5622 | if (s) goto err; |
| 5623 | bc_num_ulong2num(&intp, dig); |
| 5624 | s = zbc_num_sub(&fracp, &intp, &fracp, 0); |
| 5625 | if (s) goto err; |
| 5626 | print(dig, width, radix); |
| 5627 | s = zbc_num_mul(&frac_len, base, &frac_len, 0); |
| 5628 | if (s) goto err; |
| 5629 | } |
| 5630 | |
| 5631 | err: |
| 5632 | bc_num_free(&frac_len); |
| 5633 | bc_num_free(&digit); |
| 5634 | bc_num_free(&fracp); |
| 5635 | bc_num_free(&intp); |
| 5636 | bc_vec_free(&stack); |
| 5637 | RETURN_STATUS(s); |
| 5638 | } |
| 5639 | #if ERRORS_ARE_FATAL |
| 5640 | # define zbc_num_printNum(...) (zbc_num_printNum(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 5641 | #endif |
| 5642 | |
| 5643 | static BC_STATUS zbc_num_printBase(BcNum *n) |
| 5644 | { |
| 5645 | BcStatus s; |
| 5646 | size_t width, i; |
| 5647 | BcNumDigitOp print; |
| 5648 | bool neg = n->neg; |
| 5649 | |
| 5650 | if (neg) { |
| 5651 | bb_putchar('-'); |
| 5652 | G.prog.nchars++; |
| 5653 | } |
| 5654 | |
| 5655 | n->neg = false; |
| 5656 | |
| 5657 | if (G.prog.ob_t <= BC_NUM_MAX_IBASE) { |
| 5658 | width = 1; |
| 5659 | print = bc_num_printHex; |
| 5660 | } |
| 5661 | else { |
| 5662 | for (i = G.prog.ob_t - 1, width = 0; i != 0; i /= 10, ++width) |
| 5663 | continue; |
| 5664 | print = bc_num_printDigits; |
| 5665 | } |
| 5666 | |
| 5667 | s = zbc_num_printNum(n, &G.prog.ob, width, print); |
| 5668 | n->neg = neg; |
| 5669 | |
| 5670 | RETURN_STATUS(s); |
| 5671 | } |
| 5672 | #if ERRORS_ARE_FATAL |
| 5673 | # define zbc_num_printBase(...) (zbc_num_printBase(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 5674 | #endif |
| 5675 | |
| 5676 | #if ENABLE_DC |
| 5677 | static BC_STATUS zbc_num_stream(BcNum *n, BcNum *base) |
| 5678 | { |
| 5679 | RETURN_STATUS(zbc_num_printNum(n, base, 1, bc_num_printChar)); |
| 5680 | } |
| 5681 | #if ERRORS_ARE_FATAL |
| 5682 | # define zbc_num_stream(...) (zbc_num_stream(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 5683 | #endif |
| 5684 | #endif |
| 5685 | |
| 5686 | static BC_STATUS zbc_num_print(BcNum *n, bool newline) |
| 5687 | { |
| 5688 | BcStatus s = BC_STATUS_SUCCESS; |
| 5689 | |
| 5690 | bc_num_printNewline(); |
| 5691 | |
| 5692 | if (n->len == 0) { |
| 5693 | bb_putchar('0'); |
| 5694 | ++G.prog.nchars; |
| 5695 | } |
| 5696 | else if (G.prog.ob_t == 10) |
| 5697 | bc_num_printDecimal(n); |
| 5698 | else |
| 5699 | s = zbc_num_printBase(n); |
| 5700 | |
| 5701 | if (newline) { |
| 5702 | bb_putchar('\n'); |
| 5703 | G.prog.nchars = 0; |
| 5704 | } |
| 5705 | |
| 5706 | RETURN_STATUS(s); |
| 5707 | } |
| 5708 | #if ERRORS_ARE_FATAL |
| 5709 | # define zbc_num_print(...) (zbc_num_print(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 5710 | #endif |
| 5711 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5712 | static BC_STATUS zbc_program_print(char inst, size_t idx) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5713 | { |
Denys Vlasenko | fa35e59 | 2018-12-10 20:17:24 +0100 | [diff] [blame] | 5714 | BcStatus s; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5715 | BcResult *r; |
Denys Vlasenko | 44d79d8 | 2018-12-10 12:33:40 +0100 | [diff] [blame] | 5716 | BcNum *num; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5717 | bool pop = inst != BC_INST_PRINT; |
| 5718 | |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 5719 | if (!BC_PROG_STACK(&G.prog.results, idx + 1)) |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5720 | RETURN_STATUS(bc_error_stack_has_too_few_elements()); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5721 | |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 5722 | r = bc_vec_item_rev(&G.prog.results, idx); |
Denys Vlasenko | 44d79d8 | 2018-12-10 12:33:40 +0100 | [diff] [blame] | 5723 | num = NULL; // is this NULL necessary? |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5724 | s = zbc_program_num(r, &num, false); |
| 5725 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5726 | |
| 5727 | if (BC_PROG_NUM(r, num)) { |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5728 | s = zbc_num_print(num, !pop); |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 5729 | if (!s) bc_num_copy(&G.prog.last, num); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5730 | } |
| 5731 | else { |
Denys Vlasenko | 44d79d8 | 2018-12-10 12:33:40 +0100 | [diff] [blame] | 5732 | char *str; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5733 | |
| 5734 | idx = (r->t == BC_RESULT_STR) ? r->d.id.idx : num->rdx; |
Denys Vlasenko | 8fa1e8e | 2018-12-09 00:03:57 +0100 | [diff] [blame] | 5735 | str = *bc_program_str(idx); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5736 | |
| 5737 | if (inst == BC_INST_PRINT_STR) { |
Denys Vlasenko | 44d79d8 | 2018-12-10 12:33:40 +0100 | [diff] [blame] | 5738 | for (;;) { |
| 5739 | char c = *str++; |
| 5740 | if (c == '\0') break; |
Denys Vlasenko | 00d7779 | 2018-11-30 23:13:42 +0100 | [diff] [blame] | 5741 | bb_putchar(c); |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 5742 | ++G.prog.nchars; |
Denys Vlasenko | 44d79d8 | 2018-12-10 12:33:40 +0100 | [diff] [blame] | 5743 | if (c == '\n') G.prog.nchars = 0; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5744 | } |
| 5745 | } |
| 5746 | else { |
Denys Vlasenko | 5f1b90b | 2018-12-08 23:18:06 +0100 | [diff] [blame] | 5747 | bc_program_printString(str); |
Denys Vlasenko | 00d7779 | 2018-11-30 23:13:42 +0100 | [diff] [blame] | 5748 | if (inst == BC_INST_PRINT) bb_putchar('\n'); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5749 | } |
| 5750 | } |
| 5751 | |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 5752 | if (!s && pop) bc_vec_pop(&G.prog.results); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5753 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5754 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5755 | } |
Denys Vlasenko | fa35e59 | 2018-12-10 20:17:24 +0100 | [diff] [blame] | 5756 | #if ERRORS_ARE_FATAL |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5757 | # define zbc_program_print(...) (zbc_program_print(__VA_ARGS__), BC_STATUS_SUCCESS) |
Denys Vlasenko | fa35e59 | 2018-12-10 20:17:24 +0100 | [diff] [blame] | 5758 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5759 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5760 | static BC_STATUS zbc_program_negate(void) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5761 | { |
| 5762 | BcStatus s; |
| 5763 | BcResult res, *ptr; |
| 5764 | BcNum *num = NULL; |
| 5765 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5766 | s = zbc_program_prep(&ptr, &num); |
| 5767 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5768 | |
| 5769 | bc_num_init(&res.d.n, num->len); |
| 5770 | bc_num_copy(&res.d.n, num); |
| 5771 | if (res.d.n.len) res.d.n.neg = !res.d.n.neg; |
| 5772 | |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 5773 | bc_program_retire(&res, BC_RESULT_TEMP); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5774 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5775 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5776 | } |
Denys Vlasenko | fa35e59 | 2018-12-10 20:17:24 +0100 | [diff] [blame] | 5777 | #if ERRORS_ARE_FATAL |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5778 | # define zbc_program_negate(...) (zbc_program_negate(__VA_ARGS__), BC_STATUS_SUCCESS) |
Denys Vlasenko | fa35e59 | 2018-12-10 20:17:24 +0100 | [diff] [blame] | 5779 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5780 | |
Denys Vlasenko | 728e7c9 | 2018-12-11 19:37:00 +0100 | [diff] [blame] | 5781 | static BC_STATUS zbc_program_logical(char inst) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5782 | { |
| 5783 | BcStatus s; |
| 5784 | BcResult *opd1, *opd2, res; |
| 5785 | BcNum *n1, *n2; |
Denys Vlasenko | 16494f5 | 2018-12-12 00:50:23 +0100 | [diff] [blame] | 5786 | ssize_t cond; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5787 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5788 | s = zbc_program_binOpPrep(&opd1, &n1, &opd2, &n2, false); |
Denys Vlasenko | 728e7c9 | 2018-12-11 19:37:00 +0100 | [diff] [blame] | 5789 | if (s) RETURN_STATUS(s); |
Denys Vlasenko | 09d8df8 | 2018-12-11 19:29:35 +0100 | [diff] [blame] | 5790 | |
Denys Vlasenko | e20e00d | 2018-12-09 11:44:20 +0100 | [diff] [blame] | 5791 | bc_num_init_DEF_SIZE(&res.d.n); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5792 | |
| 5793 | if (inst == BC_INST_BOOL_AND) |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 5794 | cond = bc_num_cmp(n1, &G.prog.zero) && bc_num_cmp(n2, &G.prog.zero); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5795 | else if (inst == BC_INST_BOOL_OR) |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 5796 | cond = bc_num_cmp(n1, &G.prog.zero) || bc_num_cmp(n2, &G.prog.zero); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5797 | else { |
Denys Vlasenko | 16494f5 | 2018-12-12 00:50:23 +0100 | [diff] [blame] | 5798 | cond = bc_num_cmp(n1, n2); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5799 | switch (inst) { |
Denys Vlasenko | 09d8df8 | 2018-12-11 19:29:35 +0100 | [diff] [blame] | 5800 | case BC_INST_REL_EQ: |
Denys Vlasenko | 16494f5 | 2018-12-12 00:50:23 +0100 | [diff] [blame] | 5801 | cond = (cond == 0); |
Denys Vlasenko | 09d8df8 | 2018-12-11 19:29:35 +0100 | [diff] [blame] | 5802 | break; |
| 5803 | case BC_INST_REL_LE: |
Denys Vlasenko | 16494f5 | 2018-12-12 00:50:23 +0100 | [diff] [blame] | 5804 | cond = (cond <= 0); |
Denys Vlasenko | 09d8df8 | 2018-12-11 19:29:35 +0100 | [diff] [blame] | 5805 | break; |
| 5806 | case BC_INST_REL_GE: |
Denys Vlasenko | 16494f5 | 2018-12-12 00:50:23 +0100 | [diff] [blame] | 5807 | cond = (cond >= 0); |
Denys Vlasenko | 09d8df8 | 2018-12-11 19:29:35 +0100 | [diff] [blame] | 5808 | break; |
| 5809 | case BC_INST_REL_LT: |
Denys Vlasenko | 16494f5 | 2018-12-12 00:50:23 +0100 | [diff] [blame] | 5810 | cond = (cond < 0); |
Denys Vlasenko | 09d8df8 | 2018-12-11 19:29:35 +0100 | [diff] [blame] | 5811 | break; |
| 5812 | case BC_INST_REL_GT: |
Denys Vlasenko | 16494f5 | 2018-12-12 00:50:23 +0100 | [diff] [blame] | 5813 | cond = (cond > 0); |
| 5814 | break; |
| 5815 | default: // = case BC_INST_REL_NE: |
| 5816 | //cond = (cond != 0); - not needed |
Denys Vlasenko | 09d8df8 | 2018-12-11 19:29:35 +0100 | [diff] [blame] | 5817 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5818 | } |
| 5819 | } |
| 5820 | |
Denys Vlasenko | 09d8df8 | 2018-12-11 19:29:35 +0100 | [diff] [blame] | 5821 | if (cond) bc_num_one(&res.d.n); |
| 5822 | //else bc_num_zero(&res.d.n); - already is |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5823 | |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 5824 | bc_program_binOpRetire(&res); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5825 | |
Denys Vlasenko | 728e7c9 | 2018-12-11 19:37:00 +0100 | [diff] [blame] | 5826 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5827 | } |
Denys Vlasenko | 728e7c9 | 2018-12-11 19:37:00 +0100 | [diff] [blame] | 5828 | #if ERRORS_ARE_FATAL |
| 5829 | # define zbc_program_logical(...) (zbc_program_logical(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 5830 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5831 | |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 5832 | #if ENABLE_DC |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5833 | static BC_STATUS zbc_program_assignStr(BcResult *r, BcVec *v, |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5834 | bool push) |
| 5835 | { |
| 5836 | BcNum n2; |
| 5837 | BcResult res; |
| 5838 | |
| 5839 | memset(&n2, 0, sizeof(BcNum)); |
| 5840 | n2.rdx = res.d.id.idx = r->d.id.idx; |
| 5841 | res.t = BC_RESULT_STR; |
| 5842 | |
| 5843 | if (!push) { |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 5844 | if (!BC_PROG_STACK(&G.prog.results, 2)) |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5845 | RETURN_STATUS(bc_error_stack_has_too_few_elements()); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5846 | bc_vec_pop(v); |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 5847 | bc_vec_pop(&G.prog.results); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5848 | } |
| 5849 | |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 5850 | bc_vec_pop(&G.prog.results); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5851 | |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 5852 | bc_vec_push(&G.prog.results, &res); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5853 | bc_vec_push(v, &n2); |
| 5854 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5855 | RETURN_STATUS(BC_STATUS_SUCCESS); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5856 | } |
Denys Vlasenko | 628bf1b | 2018-12-10 20:41:05 +0100 | [diff] [blame] | 5857 | #if ERRORS_ARE_FATAL |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5858 | # define zbc_program_assignStr(...) (zbc_program_assignStr(__VA_ARGS__), BC_STATUS_SUCCESS) |
Denys Vlasenko | 628bf1b | 2018-12-10 20:41:05 +0100 | [diff] [blame] | 5859 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5860 | #endif // ENABLE_DC |
| 5861 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5862 | static BC_STATUS zbc_program_copyToVar(char *name, bool var) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5863 | { |
| 5864 | BcStatus s; |
| 5865 | BcResult *ptr, r; |
| 5866 | BcVec *v; |
| 5867 | BcNum *n; |
| 5868 | |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 5869 | if (!BC_PROG_STACK(&G.prog.results, 1)) |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5870 | RETURN_STATUS(bc_error_stack_has_too_few_elements()); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5871 | |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 5872 | ptr = bc_vec_top(&G.prog.results); |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 5873 | if ((ptr->t == BC_RESULT_ARRAY) != !var) |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5874 | RETURN_STATUS(bc_error_variable_is_wrong_type()); |
Denys Vlasenko | df51539 | 2018-12-02 19:27:48 +0100 | [diff] [blame] | 5875 | v = bc_program_search(name, var); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5876 | |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 5877 | #if ENABLE_DC |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 5878 | if (ptr->t == BC_RESULT_STR && !var) |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5879 | RETURN_STATUS(bc_error_variable_is_wrong_type()); |
| 5880 | if (ptr->t == BC_RESULT_STR) |
| 5881 | RETURN_STATUS(zbc_program_assignStr(ptr, v, true)); |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 5882 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5883 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5884 | s = zbc_program_num(ptr, &n, false); |
| 5885 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5886 | |
| 5887 | // Do this once more to make sure that pointers were not invalidated. |
Denys Vlasenko | df51539 | 2018-12-02 19:27:48 +0100 | [diff] [blame] | 5888 | v = bc_program_search(name, var); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5889 | |
| 5890 | if (var) { |
Denys Vlasenko | e20e00d | 2018-12-09 11:44:20 +0100 | [diff] [blame] | 5891 | bc_num_init_DEF_SIZE(&r.d.n); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5892 | bc_num_copy(&r.d.n, n); |
| 5893 | } |
| 5894 | else { |
| 5895 | bc_array_init(&r.d.v, true); |
| 5896 | bc_array_copy(&r.d.v, (BcVec *) n); |
| 5897 | } |
| 5898 | |
| 5899 | bc_vec_push(v, &r.d); |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 5900 | bc_vec_pop(&G.prog.results); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5901 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5902 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5903 | } |
Denys Vlasenko | 628bf1b | 2018-12-10 20:41:05 +0100 | [diff] [blame] | 5904 | #if ERRORS_ARE_FATAL |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5905 | # define zbc_program_copyToVar(...) (zbc_program_copyToVar(__VA_ARGS__), BC_STATUS_SUCCESS) |
Denys Vlasenko | 628bf1b | 2018-12-10 20:41:05 +0100 | [diff] [blame] | 5906 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5907 | |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 5908 | static BC_STATUS zbc_program_assign(char inst) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5909 | { |
| 5910 | BcStatus s; |
| 5911 | BcResult *left, *right, res; |
| 5912 | BcNum *l = NULL, *r = NULL; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5913 | bool assign = inst == BC_INST_ASSIGN, ib, sc; |
| 5914 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5915 | s = zbc_program_binOpPrep(&left, &l, &right, &r, assign); |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 5916 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5917 | |
| 5918 | ib = left->t == BC_RESULT_IBASE; |
| 5919 | sc = left->t == BC_RESULT_SCALE; |
| 5920 | |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 5921 | #if ENABLE_DC |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5922 | |
| 5923 | if (right->t == BC_RESULT_STR) { |
| 5924 | |
| 5925 | BcVec *v; |
| 5926 | |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 5927 | if (left->t != BC_RESULT_VAR) |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 5928 | RETURN_STATUS(bc_error_variable_is_wrong_type()); |
Denys Vlasenko | df51539 | 2018-12-02 19:27:48 +0100 | [diff] [blame] | 5929 | v = bc_program_search(left->d.id.name, true); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5930 | |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 5931 | RETURN_STATUS(zbc_program_assignStr(right, v, false)); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5932 | } |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 5933 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5934 | |
| 5935 | if (left->t == BC_RESULT_CONSTANT || left->t == BC_RESULT_TEMP) |
Denys Vlasenko | 259137d | 2018-12-11 19:42:05 +0100 | [diff] [blame] | 5936 | RETURN_STATUS(bc_error("bad assignment:" |
Denys Vlasenko | 0154d78 | 2018-12-14 23:32:51 +0100 | [diff] [blame] | 5937 | " left side must be variable" |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 5938 | " or array element" |
Denys Vlasenko | 0154d78 | 2018-12-14 23:32:51 +0100 | [diff] [blame] | 5939 | )); // note: shared string |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5940 | |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 5941 | #if ENABLE_BC |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 5942 | if (inst == BC_INST_ASSIGN_DIVIDE && !bc_num_cmp(r, &G.prog.zero)) |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 5943 | RETURN_STATUS(bc_error("divide by zero")); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5944 | |
| 5945 | if (assign) |
| 5946 | bc_num_copy(l, r); |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 5947 | else { |
| 5948 | s = BC_STATUS_SUCCESS; |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 5949 | ERROR_RETURN(s =) zbc_program_ops[inst - BC_INST_ASSIGN_POWER](l, r, l, G.prog.scale); |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 5950 | } |
| 5951 | if (s) RETURN_STATUS(s); |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 5952 | #else |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5953 | bc_num_copy(l, r); |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 5954 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5955 | |
| 5956 | if (ib || sc || left->t == BC_RESULT_OBASE) { |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 5957 | static const char *const msg[] = { |
Denys Vlasenko | 64074a1 | 2018-12-07 15:50:14 +0100 | [diff] [blame] | 5958 | "bad ibase; must be [2,16]", //BC_RESULT_IBASE |
| 5959 | "bad scale; must be [0,"BC_MAX_SCALE_STR"]", //BC_RESULT_SCALE |
| 5960 | NULL, //can't happen //BC_RESULT_LAST |
| 5961 | NULL, //can't happen //BC_RESULT_CONSTANT |
| 5962 | NULL, //can't happen //BC_RESULT_ONE |
| 5963 | "bad obase; must be [2,"BC_MAX_OBASE_STR"]", //BC_RESULT_OBASE |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 5964 | }; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5965 | size_t *ptr; |
Denys Vlasenko | ffdcebd | 2018-12-07 15:10:05 +0100 | [diff] [blame] | 5966 | unsigned long val, max; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5967 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 5968 | s = zbc_num_ulong(l, &val); |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 5969 | if (s) RETURN_STATUS(s); |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 5970 | s = left->t - BC_RESULT_IBASE; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5971 | if (sc) { |
| 5972 | max = BC_MAX_SCALE; |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 5973 | ptr = &G.prog.scale; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5974 | } |
| 5975 | else { |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 5976 | if (val < BC_NUM_MIN_BASE) |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 5977 | RETURN_STATUS(bc_error(msg[s])); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5978 | max = ib ? BC_NUM_MAX_IBASE : BC_MAX_OBASE; |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 5979 | ptr = ib ? &G.prog.ib_t : &G.prog.ob_t; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5980 | } |
| 5981 | |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 5982 | if (val > max) |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 5983 | RETURN_STATUS(bc_error(msg[s])); |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 5984 | if (!sc) |
| 5985 | bc_num_copy(ib ? &G.prog.ib : &G.prog.ob, l); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5986 | |
| 5987 | *ptr = (size_t) val; |
| 5988 | s = BC_STATUS_SUCCESS; |
| 5989 | } |
| 5990 | |
| 5991 | bc_num_init(&res.d.n, l->len); |
| 5992 | bc_num_copy(&res.d.n, l); |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 5993 | bc_program_binOpRetire(&res); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5994 | |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 5995 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 5996 | } |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 5997 | #if ERRORS_ARE_FATAL |
| 5998 | # define zbc_program_assign(...) (zbc_program_assign(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 5999 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6000 | |
Denys Vlasenko | 416ce76 | 2018-12-02 20:57:17 +0100 | [diff] [blame] | 6001 | #if !ENABLE_DC |
| 6002 | #define bc_program_pushVar(code, bgn, pop, copy) \ |
| 6003 | bc_program_pushVar(code, bgn) |
| 6004 | // for bc, 'pop' and 'copy' are always false |
| 6005 | #endif |
Denys Vlasenko | b402ff8 | 2018-12-11 15:45:15 +0100 | [diff] [blame] | 6006 | static BC_STATUS bc_program_pushVar(char *code, size_t *bgn, |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6007 | bool pop, bool copy) |
| 6008 | { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6009 | BcResult r; |
| 6010 | char *name = bc_program_name(code, bgn); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6011 | |
| 6012 | r.t = BC_RESULT_VAR; |
| 6013 | r.d.id.name = name; |
| 6014 | |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 6015 | #if ENABLE_DC |
Denys Vlasenko | 416ce76 | 2018-12-02 20:57:17 +0100 | [diff] [blame] | 6016 | { |
| 6017 | BcVec *v = bc_program_search(name, true); |
| 6018 | BcNum *num = bc_vec_top(v); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6019 | |
Denys Vlasenko | 416ce76 | 2018-12-02 20:57:17 +0100 | [diff] [blame] | 6020 | if (pop || copy) { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6021 | |
Denys Vlasenko | 416ce76 | 2018-12-02 20:57:17 +0100 | [diff] [blame] | 6022 | if (!BC_PROG_STACK(v, 2 - copy)) { |
| 6023 | free(name); |
Denys Vlasenko | b402ff8 | 2018-12-11 15:45:15 +0100 | [diff] [blame] | 6024 | RETURN_STATUS(bc_error_stack_has_too_few_elements()); |
Denys Vlasenko | 416ce76 | 2018-12-02 20:57:17 +0100 | [diff] [blame] | 6025 | } |
| 6026 | |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6027 | free(name); |
Denys Vlasenko | 416ce76 | 2018-12-02 20:57:17 +0100 | [diff] [blame] | 6028 | name = NULL; |
| 6029 | |
| 6030 | if (!BC_PROG_STR(num)) { |
| 6031 | |
| 6032 | r.t = BC_RESULT_TEMP; |
| 6033 | |
Denys Vlasenko | e20e00d | 2018-12-09 11:44:20 +0100 | [diff] [blame] | 6034 | bc_num_init_DEF_SIZE(&r.d.n); |
Denys Vlasenko | 416ce76 | 2018-12-02 20:57:17 +0100 | [diff] [blame] | 6035 | bc_num_copy(&r.d.n, num); |
| 6036 | } |
| 6037 | else { |
| 6038 | r.t = BC_RESULT_STR; |
| 6039 | r.d.id.idx = num->rdx; |
| 6040 | } |
| 6041 | |
| 6042 | if (!copy) bc_vec_pop(v); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6043 | } |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6044 | } |
| 6045 | #endif // ENABLE_DC |
| 6046 | |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6047 | bc_vec_push(&G.prog.results, &r); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6048 | |
Denys Vlasenko | b402ff8 | 2018-12-11 15:45:15 +0100 | [diff] [blame] | 6049 | RETURN_STATUS(BC_STATUS_SUCCESS); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6050 | } |
Denys Vlasenko | b402ff8 | 2018-12-11 15:45:15 +0100 | [diff] [blame] | 6051 | #if ERRORS_ARE_FATAL |
| 6052 | # define zbc_program_pushVar(...) (bc_program_pushVar(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 6053 | #else |
| 6054 | # define zbc_program_pushVar(...) bc_program_pushVar(__VA_ARGS__) |
| 6055 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6056 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6057 | static BC_STATUS zbc_program_pushArray(char *code, size_t *bgn, |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6058 | char inst) |
| 6059 | { |
| 6060 | BcStatus s = BC_STATUS_SUCCESS; |
| 6061 | BcResult r; |
| 6062 | BcNum *num; |
| 6063 | |
| 6064 | r.d.id.name = bc_program_name(code, bgn); |
| 6065 | |
| 6066 | if (inst == BC_INST_ARRAY) { |
| 6067 | r.t = BC_RESULT_ARRAY; |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6068 | bc_vec_push(&G.prog.results, &r); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6069 | } |
| 6070 | else { |
| 6071 | |
| 6072 | BcResult *operand; |
| 6073 | unsigned long temp; |
| 6074 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6075 | s = zbc_program_prep(&operand, &num); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6076 | if (s) goto err; |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6077 | s = zbc_num_ulong(num, &temp); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6078 | if (s) goto err; |
| 6079 | |
| 6080 | if (temp > BC_MAX_DIM) { |
Denys Vlasenko | 64074a1 | 2018-12-07 15:50:14 +0100 | [diff] [blame] | 6081 | s = bc_error("array too long; must be [1,"BC_MAX_DIM_STR"]"); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6082 | goto err; |
| 6083 | } |
| 6084 | |
| 6085 | r.d.id.idx = (size_t) temp; |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6086 | bc_program_retire(&r, BC_RESULT_ARRAY_ELEM); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6087 | } |
| 6088 | |
| 6089 | err: |
| 6090 | if (s) free(r.d.id.name); |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6091 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6092 | } |
Denys Vlasenko | fa35e59 | 2018-12-10 20:17:24 +0100 | [diff] [blame] | 6093 | #if ERRORS_ARE_FATAL |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6094 | # define zbc_program_pushArray(...) (zbc_program_pushArray(__VA_ARGS__), BC_STATUS_SUCCESS) |
Denys Vlasenko | fa35e59 | 2018-12-10 20:17:24 +0100 | [diff] [blame] | 6095 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6096 | |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 6097 | #if ENABLE_BC |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6098 | static BC_STATUS zbc_program_incdec(char inst) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6099 | { |
| 6100 | BcStatus s; |
| 6101 | BcResult *ptr, res, copy; |
| 6102 | BcNum *num = NULL; |
| 6103 | char inst2 = inst; |
| 6104 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6105 | s = zbc_program_prep(&ptr, &num); |
| 6106 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6107 | |
| 6108 | if (inst == BC_INST_INC_POST || inst == BC_INST_DEC_POST) { |
| 6109 | copy.t = BC_RESULT_TEMP; |
| 6110 | bc_num_init(©.d.n, num->len); |
| 6111 | bc_num_copy(©.d.n, num); |
| 6112 | } |
| 6113 | |
| 6114 | res.t = BC_RESULT_ONE; |
| 6115 | inst = inst == BC_INST_INC_PRE || inst == BC_INST_INC_POST ? |
| 6116 | BC_INST_ASSIGN_PLUS : |
| 6117 | BC_INST_ASSIGN_MINUS; |
| 6118 | |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6119 | bc_vec_push(&G.prog.results, &res); |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 6120 | s = zbc_program_assign(inst); |
| 6121 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6122 | |
| 6123 | if (inst2 == BC_INST_INC_POST || inst2 == BC_INST_DEC_POST) { |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6124 | bc_vec_pop(&G.prog.results); |
| 6125 | bc_vec_push(&G.prog.results, ©); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6126 | } |
| 6127 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6128 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6129 | } |
Denys Vlasenko | fa35e59 | 2018-12-10 20:17:24 +0100 | [diff] [blame] | 6130 | #if ERRORS_ARE_FATAL |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6131 | # define zbc_program_incdec(...) (zbc_program_incdec(__VA_ARGS__), BC_STATUS_SUCCESS) |
Denys Vlasenko | fa35e59 | 2018-12-10 20:17:24 +0100 | [diff] [blame] | 6132 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6133 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6134 | static BC_STATUS zbc_program_call(char *code, size_t *idx) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6135 | { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6136 | BcInstPtr ip; |
| 6137 | size_t i, nparams = bc_program_index(code, idx); |
| 6138 | BcFunc *func; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6139 | BcId *a; |
| 6140 | BcResultData param; |
| 6141 | BcResult *arg; |
| 6142 | |
| 6143 | ip.idx = 0; |
| 6144 | ip.func = bc_program_index(code, idx); |
Denys Vlasenko | 8fa1e8e | 2018-12-09 00:03:57 +0100 | [diff] [blame] | 6145 | func = bc_program_func(ip.func); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6146 | |
Denys Vlasenko | 04a1c76 | 2018-12-03 21:10:57 +0100 | [diff] [blame] | 6147 | if (func->code.len == 0) { |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6148 | RETURN_STATUS(bc_error("undefined function")); |
Denys Vlasenko | 04a1c76 | 2018-12-03 21:10:57 +0100 | [diff] [blame] | 6149 | } |
| 6150 | if (nparams != func->nparams) { |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6151 | RETURN_STATUS(bc_error_fmt("function has %u parameters, but called with %u", func->nparams, nparams)); |
Denys Vlasenko | 04a1c76 | 2018-12-03 21:10:57 +0100 | [diff] [blame] | 6152 | } |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6153 | ip.len = G.prog.results.len - nparams; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6154 | |
| 6155 | for (i = 0; i < nparams; ++i) { |
Denys Vlasenko | 628bf1b | 2018-12-10 20:41:05 +0100 | [diff] [blame] | 6156 | BcStatus s; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6157 | |
| 6158 | a = bc_vec_item(&func->autos, nparams - 1 - i); |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6159 | arg = bc_vec_top(&G.prog.results); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6160 | |
| 6161 | if ((!a->idx) != (arg->t == BC_RESULT_ARRAY) || arg->t == BC_RESULT_STR) |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6162 | RETURN_STATUS(bc_error_variable_is_wrong_type()); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6163 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6164 | s = zbc_program_copyToVar(a->name, a->idx); |
| 6165 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6166 | } |
| 6167 | |
| 6168 | for (; i < func->autos.len; ++i) { |
Denys Vlasenko | df51539 | 2018-12-02 19:27:48 +0100 | [diff] [blame] | 6169 | BcVec *v; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6170 | |
| 6171 | a = bc_vec_item(&func->autos, i); |
Denys Vlasenko | df51539 | 2018-12-02 19:27:48 +0100 | [diff] [blame] | 6172 | v = bc_program_search(a->name, a->idx); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6173 | |
| 6174 | if (a->idx) { |
Denys Vlasenko | e20e00d | 2018-12-09 11:44:20 +0100 | [diff] [blame] | 6175 | bc_num_init_DEF_SIZE(¶m.n); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6176 | bc_vec_push(v, ¶m.n); |
| 6177 | } |
| 6178 | else { |
| 6179 | bc_array_init(¶m.v, true); |
| 6180 | bc_vec_push(v, ¶m.v); |
| 6181 | } |
| 6182 | } |
| 6183 | |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6184 | bc_vec_push(&G.prog.stack, &ip); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6185 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6186 | RETURN_STATUS(BC_STATUS_SUCCESS); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6187 | } |
Denys Vlasenko | 628bf1b | 2018-12-10 20:41:05 +0100 | [diff] [blame] | 6188 | #if ERRORS_ARE_FATAL |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6189 | # define zbc_program_call(...) (zbc_program_call(__VA_ARGS__), BC_STATUS_SUCCESS) |
Denys Vlasenko | 628bf1b | 2018-12-10 20:41:05 +0100 | [diff] [blame] | 6190 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6191 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6192 | static BC_STATUS zbc_program_return(char inst) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6193 | { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6194 | BcResult res; |
| 6195 | BcFunc *f; |
| 6196 | size_t i; |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6197 | BcInstPtr *ip = bc_vec_top(&G.prog.stack); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6198 | |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6199 | if (!BC_PROG_STACK(&G.prog.results, ip->len + inst == BC_INST_RET)) |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6200 | RETURN_STATUS(bc_error_stack_has_too_few_elements()); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6201 | |
Denys Vlasenko | 8fa1e8e | 2018-12-09 00:03:57 +0100 | [diff] [blame] | 6202 | f = bc_program_func(ip->func); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6203 | res.t = BC_RESULT_TEMP; |
| 6204 | |
| 6205 | if (inst == BC_INST_RET) { |
Denys Vlasenko | 628bf1b | 2018-12-10 20:41:05 +0100 | [diff] [blame] | 6206 | BcStatus s; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6207 | BcNum *num; |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6208 | BcResult *operand = bc_vec_top(&G.prog.results); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6209 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6210 | s = zbc_program_num(operand, &num, false); |
| 6211 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6212 | bc_num_init(&res.d.n, num->len); |
| 6213 | bc_num_copy(&res.d.n, num); |
| 6214 | } |
| 6215 | else { |
Denys Vlasenko | e20e00d | 2018-12-09 11:44:20 +0100 | [diff] [blame] | 6216 | bc_num_init_DEF_SIZE(&res.d.n); |
Denys Vlasenko | 3129f70 | 2018-12-09 12:04:44 +0100 | [diff] [blame] | 6217 | //bc_num_zero(&res.d.n); - already is |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6218 | } |
| 6219 | |
| 6220 | // We need to pop arguments as well, so this takes that into account. |
| 6221 | for (i = 0; i < f->autos.len; ++i) { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6222 | BcVec *v; |
| 6223 | BcId *a = bc_vec_item(&f->autos, i); |
| 6224 | |
Denys Vlasenko | df51539 | 2018-12-02 19:27:48 +0100 | [diff] [blame] | 6225 | v = bc_program_search(a->name, a->idx); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6226 | bc_vec_pop(v); |
| 6227 | } |
| 6228 | |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6229 | bc_vec_npop(&G.prog.results, G.prog.results.len - ip->len); |
| 6230 | bc_vec_push(&G.prog.results, &res); |
| 6231 | bc_vec_pop(&G.prog.stack); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6232 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6233 | RETURN_STATUS(BC_STATUS_SUCCESS); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6234 | } |
Denys Vlasenko | 628bf1b | 2018-12-10 20:41:05 +0100 | [diff] [blame] | 6235 | #if ERRORS_ARE_FATAL |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6236 | # define zbc_program_return(...) (zbc_program_return(__VA_ARGS__), BC_STATUS_SUCCESS) |
Denys Vlasenko | 628bf1b | 2018-12-10 20:41:05 +0100 | [diff] [blame] | 6237 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6238 | #endif // ENABLE_BC |
| 6239 | |
| 6240 | static unsigned long bc_program_scale(BcNum *n) |
| 6241 | { |
| 6242 | return (unsigned long) n->rdx; |
| 6243 | } |
| 6244 | |
| 6245 | static unsigned long bc_program_len(BcNum *n) |
| 6246 | { |
Denys Vlasenko | a7f1a36 | 2018-12-10 12:57:01 +0100 | [diff] [blame] | 6247 | size_t len = n->len; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6248 | |
Denys Vlasenko | a7f1a36 | 2018-12-10 12:57:01 +0100 | [diff] [blame] | 6249 | if (n->rdx != len) return len; |
| 6250 | for (;;) { |
| 6251 | if (len == 0) break; |
| 6252 | len--; |
| 6253 | if (n->num[len] != 0) break; |
| 6254 | } |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6255 | return len; |
| 6256 | } |
| 6257 | |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 6258 | static BC_STATUS zbc_program_builtin(char inst) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6259 | { |
| 6260 | BcStatus s; |
| 6261 | BcResult *opnd; |
| 6262 | BcNum *num = NULL; |
| 6263 | BcResult res; |
| 6264 | bool len = inst == BC_INST_LENGTH; |
| 6265 | |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 6266 | if (!BC_PROG_STACK(&G.prog.results, 1)) |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 6267 | RETURN_STATUS(bc_error_stack_has_too_few_elements()); |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6268 | opnd = bc_vec_top(&G.prog.results); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6269 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6270 | s = zbc_program_num(opnd, &num, false); |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 6271 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6272 | |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 6273 | #if ENABLE_DC |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 6274 | if (!BC_PROG_NUM(opnd, num) && !len) |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 6275 | RETURN_STATUS(bc_error_variable_is_wrong_type()); |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 6276 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6277 | |
Denys Vlasenko | e20e00d | 2018-12-09 11:44:20 +0100 | [diff] [blame] | 6278 | bc_num_init_DEF_SIZE(&res.d.n); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6279 | |
Denys Vlasenko | 1aeacef | 2018-12-11 19:12:13 +0100 | [diff] [blame] | 6280 | if (inst == BC_INST_SQRT) s = zbc_num_sqrt(num, &res.d.n, G.prog.scale); |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 6281 | #if ENABLE_BC |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6282 | else if (len != 0 && opnd->t == BC_RESULT_ARRAY) { |
Denys Vlasenko | e3b4f23 | 2018-12-02 18:44:40 +0100 | [diff] [blame] | 6283 | bc_num_ulong2num(&res.d.n, (unsigned long) ((BcVec *) num)->len); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6284 | } |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 6285 | #endif |
| 6286 | #if ENABLE_DC |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6287 | else if (len != 0 && !BC_PROG_NUM(opnd, num)) { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6288 | char **str; |
| 6289 | size_t idx = opnd->t == BC_RESULT_STR ? opnd->d.id.idx : num->rdx; |
| 6290 | |
Denys Vlasenko | 8fa1e8e | 2018-12-09 00:03:57 +0100 | [diff] [blame] | 6291 | str = bc_program_str(idx); |
Denys Vlasenko | e3b4f23 | 2018-12-02 18:44:40 +0100 | [diff] [blame] | 6292 | bc_num_ulong2num(&res.d.n, strlen(*str)); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6293 | } |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 6294 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6295 | else { |
Denys Vlasenko | 5ba55f1 | 2018-12-10 15:37:14 +0100 | [diff] [blame] | 6296 | bc_num_ulong2num(&res.d.n, len ? bc_program_len(num) : bc_program_scale(num)); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6297 | } |
| 6298 | |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6299 | bc_program_retire(&res, BC_RESULT_TEMP); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6300 | |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 6301 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6302 | } |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 6303 | #if ERRORS_ARE_FATAL |
| 6304 | # define zbc_program_builtin(...) (zbc_program_builtin(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 6305 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6306 | |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 6307 | #if ENABLE_DC |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 6308 | static BC_STATUS zbc_program_divmod(void) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6309 | { |
| 6310 | BcStatus s; |
| 6311 | BcResult *opd1, *opd2, res, res2; |
| 6312 | BcNum *n1, *n2 = NULL; |
| 6313 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6314 | s = zbc_program_binOpPrep(&opd1, &n1, &opd2, &n2, false); |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 6315 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6316 | |
Denys Vlasenko | e20e00d | 2018-12-09 11:44:20 +0100 | [diff] [blame] | 6317 | bc_num_init_DEF_SIZE(&res.d.n); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6318 | bc_num_init(&res2.d.n, n2->len); |
| 6319 | |
Denys Vlasenko | 1aeacef | 2018-12-11 19:12:13 +0100 | [diff] [blame] | 6320 | s = zbc_num_divmod(n1, n2, &res2.d.n, &res.d.n, G.prog.scale); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6321 | if (s) goto err; |
| 6322 | |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6323 | bc_program_binOpRetire(&res2); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6324 | res.t = BC_RESULT_TEMP; |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6325 | bc_vec_push(&G.prog.results, &res); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6326 | |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 6327 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6328 | |
| 6329 | err: |
| 6330 | bc_num_free(&res2.d.n); |
| 6331 | bc_num_free(&res.d.n); |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 6332 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6333 | } |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 6334 | #if ERRORS_ARE_FATAL |
| 6335 | # define zbc_program_divmod(...) (zbc_program_divmod(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 6336 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6337 | |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 6338 | static BC_STATUS zbc_program_modexp(void) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6339 | { |
| 6340 | BcStatus s; |
| 6341 | BcResult *r1, *r2, *r3, res; |
| 6342 | BcNum *n1, *n2, *n3; |
| 6343 | |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 6344 | if (!BC_PROG_STACK(&G.prog.results, 3)) |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 6345 | RETURN_STATUS(bc_error_stack_has_too_few_elements()); |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6346 | s = zbc_program_binOpPrep(&r2, &n2, &r3, &n3, false); |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 6347 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6348 | |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6349 | r1 = bc_vec_item_rev(&G.prog.results, 2); |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6350 | s = zbc_program_num(r1, &n1, false); |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 6351 | if (s) RETURN_STATUS(s); |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 6352 | if (!BC_PROG_NUM(r1, n1)) |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 6353 | RETURN_STATUS(bc_error_variable_is_wrong_type()); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6354 | |
| 6355 | // Make sure that the values have their pointers updated, if necessary. |
| 6356 | if (r1->t == BC_RESULT_VAR || r1->t == BC_RESULT_ARRAY_ELEM) { |
| 6357 | |
| 6358 | if (r1->t == r2->t) { |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6359 | s = zbc_program_num(r2, &n2, false); |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 6360 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6361 | } |
| 6362 | |
| 6363 | if (r1->t == r3->t) { |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6364 | s = zbc_program_num(r3, &n3, false); |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 6365 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6366 | } |
| 6367 | } |
| 6368 | |
| 6369 | bc_num_init(&res.d.n, n3->len); |
Denys Vlasenko | 1aeacef | 2018-12-11 19:12:13 +0100 | [diff] [blame] | 6370 | s = zbc_num_modexp(n1, n2, n3, &res.d.n); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6371 | if (s) goto err; |
| 6372 | |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6373 | bc_vec_pop(&G.prog.results); |
| 6374 | bc_program_binOpRetire(&res); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6375 | |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 6376 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6377 | |
| 6378 | err: |
| 6379 | bc_num_free(&res.d.n); |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 6380 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6381 | } |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 6382 | #if ERRORS_ARE_FATAL |
| 6383 | # define zbc_program_modexp(...) (zbc_program_modexp(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 6384 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6385 | |
Denys Vlasenko | e3b4f23 | 2018-12-02 18:44:40 +0100 | [diff] [blame] | 6386 | static void bc_program_stackLen(void) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6387 | { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6388 | BcResult res; |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6389 | size_t len = G.prog.results.len; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6390 | |
| 6391 | res.t = BC_RESULT_TEMP; |
| 6392 | |
Denys Vlasenko | e20e00d | 2018-12-09 11:44:20 +0100 | [diff] [blame] | 6393 | bc_num_init_DEF_SIZE(&res.d.n); |
Denys Vlasenko | e3b4f23 | 2018-12-02 18:44:40 +0100 | [diff] [blame] | 6394 | bc_num_ulong2num(&res.d.n, len); |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6395 | bc_vec_push(&G.prog.results, &res); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6396 | } |
| 6397 | |
Denys Vlasenko | c008a73 | 2018-12-11 20:57:53 +0100 | [diff] [blame] | 6398 | static BC_STATUS zbc_program_asciify(void) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6399 | { |
| 6400 | BcStatus s; |
| 6401 | BcResult *r, res; |
Denys Vlasenko | 4a024c7 | 2018-12-09 13:21:54 +0100 | [diff] [blame] | 6402 | BcNum *num, n; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6403 | char *str, *str2, c; |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6404 | size_t len = G.prog.strs.len, idx; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6405 | unsigned long val; |
| 6406 | |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 6407 | if (!BC_PROG_STACK(&G.prog.results, 1)) |
Denys Vlasenko | c008a73 | 2018-12-11 20:57:53 +0100 | [diff] [blame] | 6408 | RETURN_STATUS(bc_error_stack_has_too_few_elements()); |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6409 | r = bc_vec_top(&G.prog.results); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6410 | |
Denys Vlasenko | 4a024c7 | 2018-12-09 13:21:54 +0100 | [diff] [blame] | 6411 | num = NULL; // TODO: is this NULL needed? |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6412 | s = zbc_program_num(r, &num, false); |
Denys Vlasenko | c008a73 | 2018-12-11 20:57:53 +0100 | [diff] [blame] | 6413 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6414 | |
| 6415 | if (BC_PROG_NUM(r, num)) { |
| 6416 | |
Denys Vlasenko | e20e00d | 2018-12-09 11:44:20 +0100 | [diff] [blame] | 6417 | bc_num_init_DEF_SIZE(&n); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6418 | bc_num_copy(&n, num); |
| 6419 | bc_num_truncate(&n, n.rdx); |
| 6420 | |
Denys Vlasenko | 1aeacef | 2018-12-11 19:12:13 +0100 | [diff] [blame] | 6421 | s = zbc_num_mod(&n, &G.prog.strmb, &n, 0); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6422 | if (s) goto num_err; |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6423 | s = zbc_num_ulong(&n, &val); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6424 | if (s) goto num_err; |
| 6425 | |
| 6426 | c = (char) val; |
| 6427 | |
| 6428 | bc_num_free(&n); |
| 6429 | } |
| 6430 | else { |
| 6431 | idx = (r->t == BC_RESULT_STR) ? r->d.id.idx : num->rdx; |
Denys Vlasenko | 8fa1e8e | 2018-12-09 00:03:57 +0100 | [diff] [blame] | 6432 | str2 = *bc_program_str(idx); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6433 | c = str2[0]; |
| 6434 | } |
| 6435 | |
Denys Vlasenko | fa35e59 | 2018-12-10 20:17:24 +0100 | [diff] [blame] | 6436 | str = xzalloc(2); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6437 | str[0] = c; |
Denys Vlasenko | fa35e59 | 2018-12-10 20:17:24 +0100 | [diff] [blame] | 6438 | //str[1] = '\0'; - already is |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6439 | |
| 6440 | str2 = xstrdup(str); |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6441 | bc_program_addFunc(str2, &idx); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6442 | |
| 6443 | if (idx != len + BC_PROG_REQ_FUNCS) { |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6444 | for (idx = 0; idx < G.prog.strs.len; ++idx) { |
Denys Vlasenko | 8fa1e8e | 2018-12-09 00:03:57 +0100 | [diff] [blame] | 6445 | if (strcmp(*bc_program_str(idx), str) == 0) { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6446 | len = idx; |
| 6447 | break; |
| 6448 | } |
| 6449 | } |
| 6450 | |
| 6451 | free(str); |
| 6452 | } |
| 6453 | else |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6454 | bc_vec_push(&G.prog.strs, &str); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6455 | |
| 6456 | res.t = BC_RESULT_STR; |
| 6457 | res.d.id.idx = len; |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6458 | bc_vec_pop(&G.prog.results); |
| 6459 | bc_vec_push(&G.prog.results, &res); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6460 | |
Denys Vlasenko | c008a73 | 2018-12-11 20:57:53 +0100 | [diff] [blame] | 6461 | RETURN_STATUS(BC_STATUS_SUCCESS); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6462 | |
| 6463 | num_err: |
| 6464 | bc_num_free(&n); |
Denys Vlasenko | c008a73 | 2018-12-11 20:57:53 +0100 | [diff] [blame] | 6465 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6466 | } |
Denys Vlasenko | c008a73 | 2018-12-11 20:57:53 +0100 | [diff] [blame] | 6467 | #if ERRORS_ARE_FATAL |
| 6468 | # define zbc_program_asciify(...) (zbc_program_asciify(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 6469 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6470 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6471 | static BC_STATUS zbc_program_printStream(void) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6472 | { |
| 6473 | BcStatus s; |
| 6474 | BcResult *r; |
| 6475 | BcNum *n = NULL; |
| 6476 | size_t idx; |
| 6477 | char *str; |
| 6478 | |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 6479 | if (!BC_PROG_STACK(&G.prog.results, 1)) |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6480 | RETURN_STATUS(bc_error_stack_has_too_few_elements()); |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6481 | r = bc_vec_top(&G.prog.results); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6482 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6483 | s = zbc_program_num(r, &n, false); |
| 6484 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6485 | |
| 6486 | if (BC_PROG_NUM(r, n)) |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6487 | s = zbc_num_stream(n, &G.prog.strmb); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6488 | else { |
| 6489 | idx = (r->t == BC_RESULT_STR) ? r->d.id.idx : n->rdx; |
Denys Vlasenko | 8fa1e8e | 2018-12-09 00:03:57 +0100 | [diff] [blame] | 6490 | str = *bc_program_str(idx); |
Denys Vlasenko | 00d7779 | 2018-11-30 23:13:42 +0100 | [diff] [blame] | 6491 | printf("%s", str); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6492 | } |
| 6493 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6494 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6495 | } |
Denys Vlasenko | 628bf1b | 2018-12-10 20:41:05 +0100 | [diff] [blame] | 6496 | #if ERRORS_ARE_FATAL |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6497 | # define zbc_program_printStream(...) (zbc_program_printStream(__VA_ARGS__), BC_STATUS_SUCCESS) |
Denys Vlasenko | 628bf1b | 2018-12-10 20:41:05 +0100 | [diff] [blame] | 6498 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6499 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6500 | static BC_STATUS zbc_program_nquit(void) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6501 | { |
| 6502 | BcStatus s; |
| 6503 | BcResult *opnd; |
| 6504 | BcNum *num = NULL; |
| 6505 | unsigned long val; |
| 6506 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6507 | s = zbc_program_prep(&opnd, &num); |
| 6508 | if (s) RETURN_STATUS(s); |
| 6509 | s = zbc_num_ulong(num, &val); |
| 6510 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6511 | |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6512 | bc_vec_pop(&G.prog.results); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6513 | |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6514 | if (G.prog.stack.len < val) |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6515 | RETURN_STATUS(bc_error_stack_has_too_few_elements()); |
Denys Vlasenko | e873ff9 | 2018-12-06 00:29:22 +0100 | [diff] [blame] | 6516 | if (G.prog.stack.len == val) { |
Denys Vlasenko | c7a7ce0 | 2018-12-06 23:06:57 +0100 | [diff] [blame] | 6517 | QUIT_OR_RETURN_TO_MAIN; |
Denys Vlasenko | e873ff9 | 2018-12-06 00:29:22 +0100 | [diff] [blame] | 6518 | } |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6519 | |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6520 | bc_vec_npop(&G.prog.stack, val); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6521 | |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6522 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6523 | } |
Denys Vlasenko | fa35e59 | 2018-12-10 20:17:24 +0100 | [diff] [blame] | 6524 | #if ERRORS_ARE_FATAL |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6525 | # define zbc_program_nquit(...) (zbc_program_nquit(__VA_ARGS__), BC_STATUS_SUCCESS) |
Denys Vlasenko | fa35e59 | 2018-12-10 20:17:24 +0100 | [diff] [blame] | 6526 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6527 | |
Denys Vlasenko | d6ad366 | 2018-12-12 21:39:10 +0100 | [diff] [blame] | 6528 | static BC_STATUS zbc_program_execStr(char *code, size_t *bgn, |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6529 | bool cond) |
| 6530 | { |
| 6531 | BcStatus s = BC_STATUS_SUCCESS; |
| 6532 | BcResult *r; |
| 6533 | char **str; |
| 6534 | BcFunc *f; |
| 6535 | BcParse prs; |
| 6536 | BcInstPtr ip; |
| 6537 | size_t fidx, sidx; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6538 | |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 6539 | if (!BC_PROG_STACK(&G.prog.results, 1)) |
Denys Vlasenko | d6ad366 | 2018-12-12 21:39:10 +0100 | [diff] [blame] | 6540 | RETURN_STATUS(bc_error_stack_has_too_few_elements()); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6541 | |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6542 | r = bc_vec_top(&G.prog.results); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6543 | |
| 6544 | if (cond) { |
Denys Vlasenko | 5ec4b49 | 2018-12-09 02:54:06 +0100 | [diff] [blame] | 6545 | BcNum *n = n; // for compiler |
| 6546 | bool exec; |
| 6547 | char *name; |
| 6548 | char *then_name = bc_program_name(code, bgn); |
| 6549 | char *else_name = NULL; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6550 | |
| 6551 | if (code[*bgn] == BC_PARSE_STREND) |
| 6552 | (*bgn) += 1; |
| 6553 | else |
| 6554 | else_name = bc_program_name(code, bgn); |
| 6555 | |
| 6556 | exec = r->d.n.len != 0; |
Denys Vlasenko | 5ec4b49 | 2018-12-09 02:54:06 +0100 | [diff] [blame] | 6557 | name = then_name; |
| 6558 | if (!exec && else_name != NULL) { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6559 | exec = true; |
| 6560 | name = else_name; |
| 6561 | } |
| 6562 | |
| 6563 | if (exec) { |
Denys Vlasenko | df51539 | 2018-12-02 19:27:48 +0100 | [diff] [blame] | 6564 | BcVec *v; |
| 6565 | v = bc_program_search(name, true); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6566 | n = bc_vec_top(v); |
| 6567 | } |
| 6568 | |
| 6569 | free(then_name); |
| 6570 | free(else_name); |
| 6571 | |
| 6572 | if (!exec) goto exit; |
| 6573 | if (!BC_PROG_STR(n)) { |
Denys Vlasenko | 24fb2cd | 2018-12-05 16:03:46 +0100 | [diff] [blame] | 6574 | s = bc_error_variable_is_wrong_type(); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6575 | goto exit; |
| 6576 | } |
| 6577 | |
| 6578 | sidx = n->rdx; |
Denys Vlasenko | 5ec4b49 | 2018-12-09 02:54:06 +0100 | [diff] [blame] | 6579 | } else { |
| 6580 | if (r->t == BC_RESULT_STR) { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6581 | sidx = r->d.id.idx; |
Denys Vlasenko | 5ec4b49 | 2018-12-09 02:54:06 +0100 | [diff] [blame] | 6582 | } else if (r->t == BC_RESULT_VAR) { |
| 6583 | BcNum *n; |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6584 | s = zbc_program_num(r, &n, false); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6585 | if (s || !BC_PROG_STR(n)) goto exit; |
| 6586 | sidx = n->rdx; |
Denys Vlasenko | 5ec4b49 | 2018-12-09 02:54:06 +0100 | [diff] [blame] | 6587 | } else |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6588 | goto exit; |
| 6589 | } |
| 6590 | |
| 6591 | fidx = sidx + BC_PROG_REQ_FUNCS; |
| 6592 | |
Denys Vlasenko | 8fa1e8e | 2018-12-09 00:03:57 +0100 | [diff] [blame] | 6593 | str = bc_program_str(sidx); |
| 6594 | f = bc_program_func(fidx); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6595 | |
| 6596 | if (f->code.len == 0) { |
Denys Vlasenko | c2265f5 | 2018-12-12 23:10:08 +0100 | [diff] [blame] | 6597 | bc_parse_create(&prs, fidx); |
Denys Vlasenko | f86e960 | 2018-12-14 17:01:56 +0100 | [diff] [blame] | 6598 | s = zbc_parse_text_init(&prs, *str); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6599 | if (s) goto err; |
Denys Vlasenko | ae0faf9 | 2018-12-12 15:19:54 +0100 | [diff] [blame] | 6600 | s = zcommon_parse_expr(&prs, BC_PARSE_NOCALL); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6601 | if (s) goto err; |
| 6602 | |
| 6603 | if (prs.l.t.t != BC_LEX_EOF) { |
Denys Vlasenko | 24fb2cd | 2018-12-05 16:03:46 +0100 | [diff] [blame] | 6604 | s = bc_error_bad_expression(); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6605 | goto err; |
| 6606 | } |
| 6607 | |
| 6608 | bc_parse_free(&prs); |
| 6609 | } |
| 6610 | |
| 6611 | ip.idx = 0; |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6612 | ip.len = G.prog.results.len; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6613 | ip.func = fidx; |
| 6614 | |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6615 | bc_vec_pop(&G.prog.results); |
| 6616 | bc_vec_push(&G.prog.stack, &ip); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6617 | |
Denys Vlasenko | d6ad366 | 2018-12-12 21:39:10 +0100 | [diff] [blame] | 6618 | RETURN_STATUS(BC_STATUS_SUCCESS); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6619 | |
| 6620 | err: |
| 6621 | bc_parse_free(&prs); |
Denys Vlasenko | 8fa1e8e | 2018-12-09 00:03:57 +0100 | [diff] [blame] | 6622 | f = bc_program_func(fidx); |
Denys Vlasenko | 7d62801 | 2018-12-04 21:46:47 +0100 | [diff] [blame] | 6623 | bc_vec_pop_all(&f->code); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6624 | exit: |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6625 | bc_vec_pop(&G.prog.results); |
Denys Vlasenko | d6ad366 | 2018-12-12 21:39:10 +0100 | [diff] [blame] | 6626 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6627 | } |
Denys Vlasenko | d6ad366 | 2018-12-12 21:39:10 +0100 | [diff] [blame] | 6628 | #if ERRORS_ARE_FATAL |
| 6629 | # define zbc_program_execStr(...) (zbc_program_execStr(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 6630 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6631 | #endif // ENABLE_DC |
| 6632 | |
Denys Vlasenko | e3b4f23 | 2018-12-02 18:44:40 +0100 | [diff] [blame] | 6633 | static void bc_program_pushGlobal(char inst) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6634 | { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6635 | BcResult res; |
| 6636 | unsigned long val; |
| 6637 | |
| 6638 | res.t = inst - BC_INST_IBASE + BC_RESULT_IBASE; |
| 6639 | if (inst == BC_INST_IBASE) |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6640 | val = (unsigned long) G.prog.ib_t; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6641 | else if (inst == BC_INST_SCALE) |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6642 | val = (unsigned long) G.prog.scale; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6643 | else |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6644 | val = (unsigned long) G.prog.ob_t; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6645 | |
Denys Vlasenko | e20e00d | 2018-12-09 11:44:20 +0100 | [diff] [blame] | 6646 | bc_num_init_DEF_SIZE(&res.d.n); |
Denys Vlasenko | e3b4f23 | 2018-12-02 18:44:40 +0100 | [diff] [blame] | 6647 | bc_num_ulong2num(&res.d.n, val); |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6648 | bc_vec_push(&G.prog.results, &res); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6649 | } |
| 6650 | |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6651 | static void bc_program_addFunc(char *name, size_t *idx) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6652 | { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6653 | BcId entry, *entry_ptr; |
| 6654 | BcFunc f; |
Denys Vlasenko | a02f844 | 2018-12-03 20:35:16 +0100 | [diff] [blame] | 6655 | int inserted; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6656 | |
| 6657 | entry.name = name; |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6658 | entry.idx = G.prog.fns.len; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6659 | |
Denys Vlasenko | a02f844 | 2018-12-03 20:35:16 +0100 | [diff] [blame] | 6660 | inserted = bc_map_insert(&G.prog.fn_map, &entry, idx); |
| 6661 | if (!inserted) free(name); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6662 | |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6663 | entry_ptr = bc_vec_item(&G.prog.fn_map, *idx); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6664 | *idx = entry_ptr->idx; |
| 6665 | |
Denys Vlasenko | a02f844 | 2018-12-03 20:35:16 +0100 | [diff] [blame] | 6666 | if (!inserted) { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6667 | |
Denys Vlasenko | 8fa1e8e | 2018-12-09 00:03:57 +0100 | [diff] [blame] | 6668 | BcFunc *func = bc_program_func(entry_ptr->idx); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6669 | |
| 6670 | // We need to reset these, so the function can be repopulated. |
| 6671 | func->nparams = 0; |
Denys Vlasenko | 7d62801 | 2018-12-04 21:46:47 +0100 | [diff] [blame] | 6672 | bc_vec_pop_all(&func->autos); |
| 6673 | bc_vec_pop_all(&func->code); |
| 6674 | bc_vec_pop_all(&func->labels); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6675 | } |
| 6676 | else { |
| 6677 | bc_func_init(&f); |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6678 | bc_vec_push(&G.prog.fns, &f); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6679 | } |
| 6680 | } |
| 6681 | |
Denys Vlasenko | d6ad366 | 2018-12-12 21:39:10 +0100 | [diff] [blame] | 6682 | static BC_STATUS zbc_program_exec(void) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6683 | { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6684 | BcResult r, *ptr; |
| 6685 | BcNum *num; |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6686 | BcInstPtr *ip = bc_vec_top(&G.prog.stack); |
Denys Vlasenko | 8fa1e8e | 2018-12-09 00:03:57 +0100 | [diff] [blame] | 6687 | BcFunc *func = bc_program_func(ip->func); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6688 | char *code = func->code.v; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6689 | |
Denys Vlasenko | 927a7d6 | 2018-12-09 02:24:14 +0100 | [diff] [blame] | 6690 | while (ip->idx < func->code.len) { |
Denys Vlasenko | fa35e59 | 2018-12-10 20:17:24 +0100 | [diff] [blame] | 6691 | BcStatus s = BC_STATUS_SUCCESS; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6692 | char inst = code[(ip->idx)++]; |
| 6693 | |
Denys Vlasenko | 99b3762 | 2018-12-15 20:06:59 +0100 | [diff] [blame] | 6694 | dbg_exec("inst:%d", inst); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6695 | switch (inst) { |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 6696 | #if ENABLE_BC |
Denys Vlasenko | fd51e0c | 2018-12-15 15:07:14 +0100 | [diff] [blame] | 6697 | case BC_INST_JUMP_ZERO: { |
| 6698 | bool zero; |
Denys Vlasenko | 99b3762 | 2018-12-15 20:06:59 +0100 | [diff] [blame] | 6699 | dbg_exec("BC_INST_JUMP_ZERO:"); |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6700 | s = zbc_program_prep(&ptr, &num); |
Denys Vlasenko | d6ad366 | 2018-12-12 21:39:10 +0100 | [diff] [blame] | 6701 | if (s) RETURN_STATUS(s); |
Denys Vlasenko | fd51e0c | 2018-12-15 15:07:14 +0100 | [diff] [blame] | 6702 | zero = (bc_num_cmp(num, &G.prog.zero) == 0); |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6703 | bc_vec_pop(&G.prog.results); |
Denys Vlasenko | fd51e0c | 2018-12-15 15:07:14 +0100 | [diff] [blame] | 6704 | if (!zero) { |
| 6705 | bc_program_index(code, &ip->idx); |
| 6706 | break; |
| 6707 | } |
| 6708 | // else: fall through |
| 6709 | } |
Denys Vlasenko | 927a7d6 | 2018-12-09 02:24:14 +0100 | [diff] [blame] | 6710 | case BC_INST_JUMP: { |
Denys Vlasenko | 927a7d6 | 2018-12-09 02:24:14 +0100 | [diff] [blame] | 6711 | size_t idx = bc_program_index(code, &ip->idx); |
Denys Vlasenko | fd51e0c | 2018-12-15 15:07:14 +0100 | [diff] [blame] | 6712 | size_t *addr = bc_vec_item(&func->labels, idx); |
Denys Vlasenko | 99b3762 | 2018-12-15 20:06:59 +0100 | [diff] [blame] | 6713 | dbg_exec("BC_INST_JUMP: to %ld", (long)*addr); |
Denys Vlasenko | fd51e0c | 2018-12-15 15:07:14 +0100 | [diff] [blame] | 6714 | ip->idx = *addr; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6715 | break; |
| 6716 | } |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6717 | case BC_INST_CALL: |
Denys Vlasenko | 99b3762 | 2018-12-15 20:06:59 +0100 | [diff] [blame] | 6718 | dbg_exec("BC_INST_CALL:"); |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6719 | s = zbc_program_call(code, &ip->idx); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6720 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6721 | case BC_INST_INC_PRE: |
| 6722 | case BC_INST_DEC_PRE: |
| 6723 | case BC_INST_INC_POST: |
| 6724 | case BC_INST_DEC_POST: |
Denys Vlasenko | 99b3762 | 2018-12-15 20:06:59 +0100 | [diff] [blame] | 6725 | dbg_exec("BC_INST_INCDEC:"); |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6726 | s = zbc_program_incdec(inst); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6727 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6728 | case BC_INST_HALT: |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 6729 | dbg_exec("BC_INST_HALT:"); |
Denys Vlasenko | c7a7ce0 | 2018-12-06 23:06:57 +0100 | [diff] [blame] | 6730 | QUIT_OR_RETURN_TO_MAIN; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6731 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6732 | case BC_INST_RET: |
| 6733 | case BC_INST_RET0: |
Denys Vlasenko | 99b3762 | 2018-12-15 20:06:59 +0100 | [diff] [blame] | 6734 | dbg_exec("BC_INST_RET[0]:"); |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6735 | s = zbc_program_return(inst); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6736 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6737 | case BC_INST_BOOL_OR: |
| 6738 | case BC_INST_BOOL_AND: |
| 6739 | #endif // ENABLE_BC |
| 6740 | case BC_INST_REL_EQ: |
| 6741 | case BC_INST_REL_LE: |
| 6742 | case BC_INST_REL_GE: |
| 6743 | case BC_INST_REL_NE: |
| 6744 | case BC_INST_REL_LT: |
| 6745 | case BC_INST_REL_GT: |
Denys Vlasenko | 99b3762 | 2018-12-15 20:06:59 +0100 | [diff] [blame] | 6746 | dbg_exec("BC_INST_BOOL:"); |
Denys Vlasenko | 728e7c9 | 2018-12-11 19:37:00 +0100 | [diff] [blame] | 6747 | s = zbc_program_logical(inst); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6748 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6749 | case BC_INST_READ: |
Denys Vlasenko | 99b3762 | 2018-12-15 20:06:59 +0100 | [diff] [blame] | 6750 | dbg_exec("BC_INST_READ:"); |
Denys Vlasenko | 26819db | 2018-12-12 16:08:46 +0100 | [diff] [blame] | 6751 | s = zbc_program_read(); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6752 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6753 | case BC_INST_VAR: |
Denys Vlasenko | 99b3762 | 2018-12-15 20:06:59 +0100 | [diff] [blame] | 6754 | dbg_exec("BC_INST_VAR:"); |
Denys Vlasenko | b402ff8 | 2018-12-11 15:45:15 +0100 | [diff] [blame] | 6755 | s = zbc_program_pushVar(code, &ip->idx, false, false); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6756 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6757 | case BC_INST_ARRAY_ELEM: |
| 6758 | case BC_INST_ARRAY: |
Denys Vlasenko | 99b3762 | 2018-12-15 20:06:59 +0100 | [diff] [blame] | 6759 | dbg_exec("BC_INST_ARRAY[_ELEM]:"); |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6760 | s = zbc_program_pushArray(code, &ip->idx, inst); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6761 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6762 | case BC_INST_LAST: |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6763 | r.t = BC_RESULT_LAST; |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6764 | bc_vec_push(&G.prog.results, &r); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6765 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6766 | case BC_INST_IBASE: |
| 6767 | case BC_INST_SCALE: |
| 6768 | case BC_INST_OBASE: |
Denys Vlasenko | e3b4f23 | 2018-12-02 18:44:40 +0100 | [diff] [blame] | 6769 | bc_program_pushGlobal(inst); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6770 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6771 | case BC_INST_SCALE_FUNC: |
| 6772 | case BC_INST_LENGTH: |
| 6773 | case BC_INST_SQRT: |
Denys Vlasenko | 99b3762 | 2018-12-15 20:06:59 +0100 | [diff] [blame] | 6774 | dbg_exec("BC_INST_builtin:"); |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 6775 | s = zbc_program_builtin(inst); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6776 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6777 | case BC_INST_NUM: |
Denys Vlasenko | 99b3762 | 2018-12-15 20:06:59 +0100 | [diff] [blame] | 6778 | dbg_exec("BC_INST_NUM:"); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6779 | r.t = BC_RESULT_CONSTANT; |
| 6780 | r.d.id.idx = bc_program_index(code, &ip->idx); |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6781 | bc_vec_push(&G.prog.results, &r); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6782 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6783 | case BC_INST_POP: |
Denys Vlasenko | 99b3762 | 2018-12-15 20:06:59 +0100 | [diff] [blame] | 6784 | dbg_exec("BC_INST_POP:"); |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6785 | if (!BC_PROG_STACK(&G.prog.results, 1)) |
Denys Vlasenko | 24fb2cd | 2018-12-05 16:03:46 +0100 | [diff] [blame] | 6786 | s = bc_error_stack_has_too_few_elements(); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6787 | else |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6788 | bc_vec_pop(&G.prog.results); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6789 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6790 | case BC_INST_POP_EXEC: |
Denys Vlasenko | 99b3762 | 2018-12-15 20:06:59 +0100 | [diff] [blame] | 6791 | dbg_exec("BC_INST_POP_EXEC:"); |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6792 | bc_vec_pop(&G.prog.stack); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6793 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6794 | case BC_INST_PRINT: |
| 6795 | case BC_INST_PRINT_POP: |
| 6796 | case BC_INST_PRINT_STR: |
Denys Vlasenko | 99b3762 | 2018-12-15 20:06:59 +0100 | [diff] [blame] | 6797 | dbg_exec("BC_INST_PRINTxyz:"); |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6798 | s = zbc_program_print(inst, 0); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6799 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6800 | case BC_INST_STR: |
Denys Vlasenko | 99b3762 | 2018-12-15 20:06:59 +0100 | [diff] [blame] | 6801 | dbg_exec("BC_INST_STR:"); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6802 | r.t = BC_RESULT_STR; |
| 6803 | r.d.id.idx = bc_program_index(code, &ip->idx); |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6804 | bc_vec_push(&G.prog.results, &r); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6805 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6806 | case BC_INST_POWER: |
| 6807 | case BC_INST_MULTIPLY: |
| 6808 | case BC_INST_DIVIDE: |
| 6809 | case BC_INST_MODULUS: |
| 6810 | case BC_INST_PLUS: |
| 6811 | case BC_INST_MINUS: |
Denys Vlasenko | 99b3762 | 2018-12-15 20:06:59 +0100 | [diff] [blame] | 6812 | dbg_exec("BC_INST_binaryop:"); |
Denys Vlasenko | 259137d | 2018-12-11 19:42:05 +0100 | [diff] [blame] | 6813 | s = zbc_program_op(inst); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6814 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6815 | case BC_INST_BOOL_NOT: |
Denys Vlasenko | 99b3762 | 2018-12-15 20:06:59 +0100 | [diff] [blame] | 6816 | dbg_exec("BC_INST_BOOL_NOT:"); |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6817 | s = zbc_program_prep(&ptr, &num); |
Denys Vlasenko | d6ad366 | 2018-12-12 21:39:10 +0100 | [diff] [blame] | 6818 | if (s) RETURN_STATUS(s); |
Denys Vlasenko | e20e00d | 2018-12-09 11:44:20 +0100 | [diff] [blame] | 6819 | bc_num_init_DEF_SIZE(&r.d.n); |
Denys Vlasenko | 927a7d6 | 2018-12-09 02:24:14 +0100 | [diff] [blame] | 6820 | if (!bc_num_cmp(num, &G.prog.zero)) |
| 6821 | bc_num_one(&r.d.n); |
Denys Vlasenko | 3129f70 | 2018-12-09 12:04:44 +0100 | [diff] [blame] | 6822 | //else bc_num_zero(&r.d.n); - already is |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6823 | bc_program_retire(&r, BC_RESULT_TEMP); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6824 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6825 | case BC_INST_NEG: |
Denys Vlasenko | 99b3762 | 2018-12-15 20:06:59 +0100 | [diff] [blame] | 6826 | dbg_exec("BC_INST_NEG:"); |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6827 | s = zbc_program_negate(); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6828 | break; |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 6829 | #if ENABLE_BC |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6830 | case BC_INST_ASSIGN_POWER: |
| 6831 | case BC_INST_ASSIGN_MULTIPLY: |
| 6832 | case BC_INST_ASSIGN_DIVIDE: |
| 6833 | case BC_INST_ASSIGN_MODULUS: |
| 6834 | case BC_INST_ASSIGN_PLUS: |
| 6835 | case BC_INST_ASSIGN_MINUS: |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 6836 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6837 | case BC_INST_ASSIGN: |
Denys Vlasenko | 99b3762 | 2018-12-15 20:06:59 +0100 | [diff] [blame] | 6838 | dbg_exec("BC_INST_ASSIGNxyz:"); |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 6839 | s = zbc_program_assign(inst); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6840 | break; |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 6841 | #if ENABLE_DC |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6842 | case BC_INST_MODEXP: |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 6843 | s = zbc_program_modexp(); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6844 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6845 | case BC_INST_DIVMOD: |
Denys Vlasenko | 7f4daa4 | 2018-12-11 19:04:44 +0100 | [diff] [blame] | 6846 | s = zbc_program_divmod(); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6847 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6848 | case BC_INST_EXECUTE: |
| 6849 | case BC_INST_EXEC_COND: |
Denys Vlasenko | fd51e0c | 2018-12-15 15:07:14 +0100 | [diff] [blame] | 6850 | s = zbc_program_execStr(code, &ip->idx, inst == BC_INST_EXEC_COND); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6851 | break; |
Denys Vlasenko | 927a7d6 | 2018-12-09 02:24:14 +0100 | [diff] [blame] | 6852 | case BC_INST_PRINT_STACK: { |
| 6853 | size_t idx; |
| 6854 | for (idx = 0; idx < G.prog.results.len; ++idx) { |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6855 | s = zbc_program_print(BC_INST_PRINT, idx); |
Denys Vlasenko | 927a7d6 | 2018-12-09 02:24:14 +0100 | [diff] [blame] | 6856 | if (s) break; |
| 6857 | } |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6858 | break; |
| 6859 | } |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6860 | case BC_INST_CLEAR_STACK: |
Denys Vlasenko | 7d62801 | 2018-12-04 21:46:47 +0100 | [diff] [blame] | 6861 | bc_vec_pop_all(&G.prog.results); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6862 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6863 | case BC_INST_STACK_LEN: |
Denys Vlasenko | e3b4f23 | 2018-12-02 18:44:40 +0100 | [diff] [blame] | 6864 | bc_program_stackLen(); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6865 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6866 | case BC_INST_DUPLICATE: |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 6867 | if (!BC_PROG_STACK(&G.prog.results, 1)) |
Denys Vlasenko | d6ad366 | 2018-12-12 21:39:10 +0100 | [diff] [blame] | 6868 | RETURN_STATUS(bc_error_stack_has_too_few_elements()); |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6869 | ptr = bc_vec_top(&G.prog.results); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6870 | bc_result_copy(&r, ptr); |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6871 | bc_vec_push(&G.prog.results, &r); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6872 | break; |
Denys Vlasenko | 927a7d6 | 2018-12-09 02:24:14 +0100 | [diff] [blame] | 6873 | case BC_INST_SWAP: { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6874 | BcResult *ptr2; |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 6875 | if (!BC_PROG_STACK(&G.prog.results, 2)) |
Denys Vlasenko | d6ad366 | 2018-12-12 21:39:10 +0100 | [diff] [blame] | 6876 | RETURN_STATUS(bc_error_stack_has_too_few_elements()); |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6877 | ptr = bc_vec_item_rev(&G.prog.results, 0); |
| 6878 | ptr2 = bc_vec_item_rev(&G.prog.results, 1); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6879 | memcpy(&r, ptr, sizeof(BcResult)); |
| 6880 | memcpy(ptr, ptr2, sizeof(BcResult)); |
| 6881 | memcpy(ptr2, &r, sizeof(BcResult)); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6882 | break; |
| 6883 | } |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6884 | case BC_INST_ASCIIFY: |
Denys Vlasenko | c008a73 | 2018-12-11 20:57:53 +0100 | [diff] [blame] | 6885 | s = zbc_program_asciify(); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6886 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6887 | case BC_INST_PRINT_STREAM: |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6888 | s = zbc_program_printStream(); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6889 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6890 | case BC_INST_LOAD: |
Denys Vlasenko | 927a7d6 | 2018-12-09 02:24:14 +0100 | [diff] [blame] | 6891 | case BC_INST_PUSH_VAR: { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6892 | bool copy = inst == BC_INST_LOAD; |
Denys Vlasenko | b402ff8 | 2018-12-11 15:45:15 +0100 | [diff] [blame] | 6893 | s = zbc_program_pushVar(code, &ip->idx, true, copy); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6894 | break; |
| 6895 | } |
Denys Vlasenko | 927a7d6 | 2018-12-09 02:24:14 +0100 | [diff] [blame] | 6896 | case BC_INST_PUSH_TO_VAR: { |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6897 | char *name = bc_program_name(code, &ip->idx); |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6898 | s = zbc_program_copyToVar(name, true); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6899 | free(name); |
| 6900 | break; |
| 6901 | } |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6902 | case BC_INST_QUIT: |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 6903 | dbg_exec("BC_INST_NEG:"); |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6904 | if (G.prog.stack.len <= 2) |
Denys Vlasenko | c7a7ce0 | 2018-12-06 23:06:57 +0100 | [diff] [blame] | 6905 | QUIT_OR_RETURN_TO_MAIN; |
Denys Vlasenko | cfdc133 | 2018-12-03 14:02:35 +0100 | [diff] [blame] | 6906 | bc_vec_npop(&G.prog.stack, 2); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6907 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6908 | case BC_INST_NQUIT: |
Denys Vlasenko | 2930123 | 2018-12-11 15:29:32 +0100 | [diff] [blame] | 6909 | s = zbc_program_nquit(); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6910 | break; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6911 | #endif // ENABLE_DC |
| 6912 | } |
| 6913 | |
Denys Vlasenko | d38af48 | 2018-12-04 19:11:02 +0100 | [diff] [blame] | 6914 | if (s || G_interrupt) { |
| 6915 | bc_program_reset(); |
Denys Vlasenko | d6ad366 | 2018-12-12 21:39:10 +0100 | [diff] [blame] | 6916 | RETURN_STATUS(s); |
Denys Vlasenko | d38af48 | 2018-12-04 19:11:02 +0100 | [diff] [blame] | 6917 | } |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6918 | |
| 6919 | // If the stack has changed, pointers may be invalid. |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 6920 | ip = bc_vec_top(&G.prog.stack); |
Denys Vlasenko | 8fa1e8e | 2018-12-09 00:03:57 +0100 | [diff] [blame] | 6921 | func = bc_program_func(ip->func); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6922 | code = func->code.v; |
| 6923 | } |
| 6924 | |
Denys Vlasenko | d6ad366 | 2018-12-12 21:39:10 +0100 | [diff] [blame] | 6925 | RETURN_STATUS(BC_STATUS_SUCCESS); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6926 | } |
Denys Vlasenko | d6ad366 | 2018-12-12 21:39:10 +0100 | [diff] [blame] | 6927 | #if ERRORS_ARE_FATAL |
| 6928 | # define zbc_program_exec(...) (zbc_program_exec(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 6929 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6930 | |
Denys Vlasenko | 1ff1c70 | 2018-12-06 00:46:09 +0100 | [diff] [blame] | 6931 | static unsigned bc_vm_envLen(const char *var) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6932 | { |
Denys Vlasenko | 1ff1c70 | 2018-12-06 00:46:09 +0100 | [diff] [blame] | 6933 | char *lenv; |
| 6934 | unsigned len; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6935 | |
Denys Vlasenko | 1ff1c70 | 2018-12-06 00:46:09 +0100 | [diff] [blame] | 6936 | lenv = getenv(var); |
| 6937 | len = BC_NUM_PRINT_WIDTH; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6938 | if (!lenv) return len; |
| 6939 | |
Denys Vlasenko | 1ff1c70 | 2018-12-06 00:46:09 +0100 | [diff] [blame] | 6940 | len = bb_strtou(lenv, NULL, 10) - 1; |
| 6941 | if (errno || len < 2 || len >= INT_MAX) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6942 | len = BC_NUM_PRINT_WIDTH; |
| 6943 | |
| 6944 | return len; |
| 6945 | } |
| 6946 | |
Denys Vlasenko | d6ad366 | 2018-12-12 21:39:10 +0100 | [diff] [blame] | 6947 | static BC_STATUS zbc_vm_process(const char *text) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6948 | { |
Denys Vlasenko | 2ea53a4 | 2018-12-14 17:51:17 +0100 | [diff] [blame] | 6949 | BcStatus s; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6950 | |
Denys Vlasenko | 2ea53a4 | 2018-12-14 17:51:17 +0100 | [diff] [blame] | 6951 | dbg_lex_enter("%s:%d entered", __func__, __LINE__); |
| 6952 | s = zbc_parse_text_init(&G.prs, text); |
Denys Vlasenko | d6ad366 | 2018-12-12 21:39:10 +0100 | [diff] [blame] | 6953 | if (s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6954 | |
Denys Vlasenko | 6d9146a | 2018-12-02 15:48:37 +0100 | [diff] [blame] | 6955 | while (G.prs.l.t.t != BC_LEX_EOF) { |
Denys Vlasenko | 2ea53a4 | 2018-12-14 17:51:17 +0100 | [diff] [blame] | 6956 | dbg_lex("%s:%d G.prs.l.t.t:%d", __func__, __LINE__, G.prs.l.t.t); |
Denys Vlasenko | c0ef23c | 2018-12-12 23:03:10 +0100 | [diff] [blame] | 6957 | ERROR_RETURN(s =) zcommon_parse(&G.prs); |
Denys Vlasenko | d6ad366 | 2018-12-12 21:39:10 +0100 | [diff] [blame] | 6958 | if (s) RETURN_STATUS(s); |
Denys Vlasenko | d6ad366 | 2018-12-12 21:39:10 +0100 | [diff] [blame] | 6959 | s = zbc_program_exec(); |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 6960 | if (s) { |
Denys Vlasenko | d38af48 | 2018-12-04 19:11:02 +0100 | [diff] [blame] | 6961 | bc_program_reset(); |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 6962 | break; |
| 6963 | } |
| 6964 | fflush_and_check(); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6965 | } |
| 6966 | |
Denys Vlasenko | 2ea53a4 | 2018-12-14 17:51:17 +0100 | [diff] [blame] | 6967 | dbg_lex_done("%s:%d done", __func__, __LINE__); |
Denys Vlasenko | d6ad366 | 2018-12-12 21:39:10 +0100 | [diff] [blame] | 6968 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6969 | } |
Denys Vlasenko | d6ad366 | 2018-12-12 21:39:10 +0100 | [diff] [blame] | 6970 | #if ERRORS_ARE_FATAL |
| 6971 | # define zbc_vm_process(...) (zbc_vm_process(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 6972 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6973 | |
Denys Vlasenko | d6ad366 | 2018-12-12 21:39:10 +0100 | [diff] [blame] | 6974 | static BC_STATUS zbc_vm_file(const char *file) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6975 | { |
Denys Vlasenko | 0fe270e | 2018-12-13 19:58:58 +0100 | [diff] [blame] | 6976 | // So far bc/dc have no way to include a file from another file, |
| 6977 | // therefore we know G.prog.file == NULL on entry |
| 6978 | //const char *sv_file; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6979 | char *data; |
Denys Vlasenko | 0409ad3 | 2018-12-05 16:39:22 +0100 | [diff] [blame] | 6980 | BcStatus s; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6981 | BcFunc *main_func; |
| 6982 | BcInstPtr *ip; |
| 6983 | |
Denys Vlasenko | df51539 | 2018-12-02 19:27:48 +0100 | [diff] [blame] | 6984 | data = bc_read_file(file); |
Denys Vlasenko | d6ad366 | 2018-12-12 21:39:10 +0100 | [diff] [blame] | 6985 | if (!data) RETURN_STATUS(bc_error_fmt("file '%s' is not text", file)); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6986 | |
Denys Vlasenko | 0fe270e | 2018-12-13 19:58:58 +0100 | [diff] [blame] | 6987 | //sv_file = G.prog.file; |
Denys Vlasenko | 0409ad3 | 2018-12-05 16:39:22 +0100 | [diff] [blame] | 6988 | G.prog.file = file; |
| 6989 | bc_lex_file(&G.prs.l); |
Denys Vlasenko | d6ad366 | 2018-12-12 21:39:10 +0100 | [diff] [blame] | 6990 | s = zbc_vm_process(data); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6991 | if (s) goto err; |
| 6992 | |
Denys Vlasenko | 8fa1e8e | 2018-12-09 00:03:57 +0100 | [diff] [blame] | 6993 | main_func = bc_program_func(BC_PROG_MAIN); |
Denys Vlasenko | 6d9146a | 2018-12-02 15:48:37 +0100 | [diff] [blame] | 6994 | ip = bc_vec_item(&G.prog.stack, 0); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6995 | |
Denys Vlasenko | 60cf747 | 2018-12-04 20:05:28 +0100 | [diff] [blame] | 6996 | if (main_func->code.len < ip->idx) |
Denys Vlasenko | 24fb2cd | 2018-12-05 16:03:46 +0100 | [diff] [blame] | 6997 | s = bc_error_fmt("file '%s' is not executable", file); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 6998 | |
| 6999 | err: |
Denys Vlasenko | 0fe270e | 2018-12-13 19:58:58 +0100 | [diff] [blame] | 7000 | //G.prog.file = sv_file; |
| 7001 | G.prog.file = NULL; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 7002 | free(data); |
Denys Vlasenko | d6ad366 | 2018-12-12 21:39:10 +0100 | [diff] [blame] | 7003 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 7004 | } |
Denys Vlasenko | d6ad366 | 2018-12-12 21:39:10 +0100 | [diff] [blame] | 7005 | #if ERRORS_ARE_FATAL |
| 7006 | # define zbc_vm_file(...) (zbc_vm_file(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 7007 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 7008 | |
Denys Vlasenko | 19f1107 | 2018-12-12 22:48:19 +0100 | [diff] [blame] | 7009 | static BC_STATUS zbc_vm_stdin(void) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 7010 | { |
Denys Vlasenko | a0c421c | 2018-12-02 20:16:52 +0100 | [diff] [blame] | 7011 | BcStatus s; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 7012 | |
Denys Vlasenko | 0fe270e | 2018-12-13 19:58:58 +0100 | [diff] [blame] | 7013 | //G.prog.file = NULL; - already is |
Denys Vlasenko | 0409ad3 | 2018-12-05 16:39:22 +0100 | [diff] [blame] | 7014 | bc_lex_file(&G.prs.l); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 7015 | |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 7016 | G.use_stdin = 1; |
Denys Vlasenko | e9519e4 | 2018-12-16 17:06:07 +0100 | [diff] [blame] | 7017 | do { |
| 7018 | s = zbc_vm_process(""); |
| 7019 | // We do not stop looping on errors here. |
| 7020 | // Example: start interactive bc and enter "return". |
| 7021 | // It should say "'return' not in a function" |
| 7022 | // but should not exit. |
| 7023 | } while (G.use_stdin); |
Denys Vlasenko | 19f1107 | 2018-12-12 22:48:19 +0100 | [diff] [blame] | 7024 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 7025 | } |
Denys Vlasenko | 19f1107 | 2018-12-12 22:48:19 +0100 | [diff] [blame] | 7026 | #if ERRORS_ARE_FATAL |
| 7027 | # define zbc_vm_stdin(...) (zbc_vm_stdin(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 7028 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 7029 | |
Denys Vlasenko | 0ad36c4 | 2018-12-05 16:21:43 +0100 | [diff] [blame] | 7030 | #if ENABLE_BC |
Denys Vlasenko | 57b6918 | 2018-12-14 00:12:13 +0100 | [diff] [blame] | 7031 | static void bc_vm_info(void) |
| 7032 | { |
| 7033 | printf("%s "BB_VER"\n" |
| 7034 | "Copyright (c) 2018 Gavin D. Howard and contributors\n" |
| 7035 | , applet_name); |
| 7036 | } |
| 7037 | |
| 7038 | static void bc_args(char **argv) |
| 7039 | { |
| 7040 | unsigned opts; |
| 7041 | int i; |
| 7042 | |
| 7043 | GETOPT_RESET(); |
| 7044 | #if ENABLE_FEATURE_BC_LONG_OPTIONS |
| 7045 | opts = option_mask32 |= getopt32long(argv, "wvsqli", |
| 7046 | "warn\0" No_argument "w" |
| 7047 | "version\0" No_argument "v" |
| 7048 | "standard\0" No_argument "s" |
| 7049 | "quiet\0" No_argument "q" |
| 7050 | "mathlib\0" No_argument "l" |
| 7051 | "interactive\0" No_argument "i" |
| 7052 | ); |
| 7053 | #else |
| 7054 | opts = option_mask32 |= getopt32(argv, "wvsqli"); |
| 7055 | #endif |
| 7056 | if (getenv("POSIXLY_CORRECT")) |
| 7057 | option_mask32 |= BC_FLAG_S; |
| 7058 | |
| 7059 | if (opts & BC_FLAG_V) { |
| 7060 | bc_vm_info(); |
| 7061 | exit(0); |
| 7062 | } |
| 7063 | |
| 7064 | for (i = optind; argv[i]; ++i) |
| 7065 | bc_vec_push(&G.files, argv + i); |
| 7066 | } |
| 7067 | |
| 7068 | static void bc_vm_envArgs(void) |
| 7069 | { |
| 7070 | BcVec v; |
| 7071 | char *buf; |
| 7072 | char *env_args = getenv("BC_ENV_ARGS"); |
| 7073 | |
| 7074 | if (!env_args) return; |
| 7075 | |
| 7076 | G.env_args = xstrdup(env_args); |
| 7077 | buf = G.env_args; |
| 7078 | |
| 7079 | bc_vec_init(&v, sizeof(char *), NULL); |
| 7080 | |
| 7081 | while (*(buf = skip_whitespace(buf)) != '\0') { |
| 7082 | bc_vec_push(&v, &buf); |
| 7083 | buf = skip_non_whitespace(buf); |
| 7084 | if (!*buf) |
| 7085 | break; |
| 7086 | *buf++ = '\0'; |
| 7087 | } |
| 7088 | |
| 7089 | // NULL terminate, and pass argv[] so that first arg is argv[1] |
| 7090 | if (sizeof(int) == sizeof(char*)) { |
| 7091 | bc_vec_push(&v, &const_int_0); |
| 7092 | } else { |
| 7093 | static char *const nullptr = NULL; |
| 7094 | bc_vec_push(&v, &nullptr); |
| 7095 | } |
| 7096 | bc_args(((char **)v.v) - 1); |
| 7097 | |
| 7098 | bc_vec_free(&v); |
| 7099 | } |
| 7100 | |
| 7101 | static const char bc_lib[] ALIGN1 = { |
Denys Vlasenko | 0ad36c4 | 2018-12-05 16:21:43 +0100 | [diff] [blame] | 7102 | "scale=20" |
| 7103 | "\n" "define e(x){" |
| 7104 | "\n" "auto b,s,n,r,d,i,p,f,v" |
Denys Vlasenko | 203210e | 2018-12-14 09:53:50 +0100 | [diff] [blame] | 7105 | ////////////////"if(x<0)return(1/e(-x))" // and drop 'n' and x<0 logic below |
| 7106 | //^^^^^^^^^^^^^^^^ this would work, and is even more precise than GNU bc: |
| 7107 | //e(-.998896): GNU:.36828580434569428695 |
| 7108 | // above code:.36828580434569428696 |
| 7109 | // actual value:.3682858043456942869594... |
| 7110 | // but for now let's be "GNU compatible" |
Denys Vlasenko | 0ad36c4 | 2018-12-05 16:21:43 +0100 | [diff] [blame] | 7111 | "\n" "b=ibase" |
| 7112 | "\n" "ibase=A" |
| 7113 | "\n" "if(x<0){" |
| 7114 | "\n" "n=1" |
| 7115 | "\n" "x=-x" |
| 7116 | "\n" "}" |
| 7117 | "\n" "s=scale" |
Denys Vlasenko | 146a79d | 2018-12-16 21:46:11 +0100 | [diff] [blame^] | 7118 | "\n" "r=6+s+.44*x" |
Denys Vlasenko | 0ad36c4 | 2018-12-05 16:21:43 +0100 | [diff] [blame] | 7119 | "\n" "scale=scale(x)+1" |
| 7120 | "\n" "while(x>1){" |
| 7121 | "\n" "d+=1" |
| 7122 | "\n" "x/=2" |
| 7123 | "\n" "scale+=1" |
| 7124 | "\n" "}" |
| 7125 | "\n" "scale=r" |
| 7126 | "\n" "r=x+1" |
| 7127 | "\n" "p=x" |
| 7128 | "\n" "f=v=1" |
Denys Vlasenko | 3ac0c21 | 2018-12-14 01:01:01 +0100 | [diff] [blame] | 7129 | "\n" "for(i=2;v;++i){" |
Denys Vlasenko | 0ad36c4 | 2018-12-05 16:21:43 +0100 | [diff] [blame] | 7130 | "\n" "p*=x" |
| 7131 | "\n" "f*=i" |
| 7132 | "\n" "v=p/f" |
| 7133 | "\n" "r+=v" |
| 7134 | "\n" "}" |
Denys Vlasenko | 3ac0c21 | 2018-12-14 01:01:01 +0100 | [diff] [blame] | 7135 | "\n" "while(d--)r*=r" |
Denys Vlasenko | 0ad36c4 | 2018-12-05 16:21:43 +0100 | [diff] [blame] | 7136 | "\n" "scale=s" |
| 7137 | "\n" "ibase=b" |
Denys Vlasenko | 3ac0c21 | 2018-12-14 01:01:01 +0100 | [diff] [blame] | 7138 | "\n" "if(n)return(1/r)" |
Denys Vlasenko | 0ad36c4 | 2018-12-05 16:21:43 +0100 | [diff] [blame] | 7139 | "\n" "return(r/1)" |
| 7140 | "\n" "}" |
| 7141 | "\n" "define l(x){" |
| 7142 | "\n" "auto b,s,r,p,a,q,i,v" |
| 7143 | "\n" "b=ibase" |
| 7144 | "\n" "ibase=A" |
| 7145 | "\n" "if(x<=0){" |
| 7146 | "\n" "r=(1-10^scale)/1" |
| 7147 | "\n" "ibase=b" |
| 7148 | "\n" "return(r)" |
| 7149 | "\n" "}" |
| 7150 | "\n" "s=scale" |
| 7151 | "\n" "scale+=6" |
| 7152 | "\n" "p=2" |
| 7153 | "\n" "while(x>=2){" |
| 7154 | "\n" "p*=2" |
| 7155 | "\n" "x=sqrt(x)" |
| 7156 | "\n" "}" |
Denys Vlasenko | 146a79d | 2018-12-16 21:46:11 +0100 | [diff] [blame^] | 7157 | "\n" "while(x<=.5){" |
Denys Vlasenko | 0ad36c4 | 2018-12-05 16:21:43 +0100 | [diff] [blame] | 7158 | "\n" "p*=2" |
| 7159 | "\n" "x=sqrt(x)" |
| 7160 | "\n" "}" |
| 7161 | "\n" "r=a=(x-1)/(x+1)" |
| 7162 | "\n" "q=a*a" |
Denys Vlasenko | 3ac0c21 | 2018-12-14 01:01:01 +0100 | [diff] [blame] | 7163 | "\n" "v=1" |
| 7164 | "\n" "for(i=3;v;i+=2){" |
Denys Vlasenko | 0ad36c4 | 2018-12-05 16:21:43 +0100 | [diff] [blame] | 7165 | "\n" "a*=q" |
| 7166 | "\n" "v=a/i" |
| 7167 | "\n" "r+=v" |
| 7168 | "\n" "}" |
| 7169 | "\n" "r*=p" |
| 7170 | "\n" "scale=s" |
| 7171 | "\n" "ibase=b" |
| 7172 | "\n" "return(r/1)" |
| 7173 | "\n" "}" |
| 7174 | "\n" "define s(x){" |
Denys Vlasenko | 240d7ee | 2018-12-14 11:27:09 +0100 | [diff] [blame] | 7175 | "\n" "auto b,s,r,a,q,i" |
| 7176 | "\n" "if(x<0)return(-s(-x))" |
Denys Vlasenko | 0ad36c4 | 2018-12-05 16:21:43 +0100 | [diff] [blame] | 7177 | "\n" "b=ibase" |
| 7178 | "\n" "ibase=A" |
| 7179 | "\n" "s=scale" |
| 7180 | "\n" "scale=1.1*s+2" |
| 7181 | "\n" "a=a(1)" |
Denys Vlasenko | 0ad36c4 | 2018-12-05 16:21:43 +0100 | [diff] [blame] | 7182 | "\n" "scale=0" |
| 7183 | "\n" "q=(x/a+2)/4" |
Denys Vlasenko | 203210e | 2018-12-14 09:53:50 +0100 | [diff] [blame] | 7184 | "\n" "x-=4*q*a" |
Denys Vlasenko | 3ac0c21 | 2018-12-14 01:01:01 +0100 | [diff] [blame] | 7185 | "\n" "if(q%2)x=-x" |
Denys Vlasenko | 0ad36c4 | 2018-12-05 16:21:43 +0100 | [diff] [blame] | 7186 | "\n" "scale=s+2" |
| 7187 | "\n" "r=a=x" |
| 7188 | "\n" "q=-x*x" |
Denys Vlasenko | 3ac0c21 | 2018-12-14 01:01:01 +0100 | [diff] [blame] | 7189 | "\n" "for(i=3;a;i+=2){" |
Denys Vlasenko | 0ad36c4 | 2018-12-05 16:21:43 +0100 | [diff] [blame] | 7190 | "\n" "a*=q/(i*(i-1))" |
| 7191 | "\n" "r+=a" |
| 7192 | "\n" "}" |
| 7193 | "\n" "scale=s" |
| 7194 | "\n" "ibase=b" |
Denys Vlasenko | 0ad36c4 | 2018-12-05 16:21:43 +0100 | [diff] [blame] | 7195 | "\n" "return(r/1)" |
| 7196 | "\n" "}" |
| 7197 | "\n" "define c(x){" |
| 7198 | "\n" "auto b,s" |
| 7199 | "\n" "b=ibase" |
| 7200 | "\n" "ibase=A" |
| 7201 | "\n" "s=scale" |
| 7202 | "\n" "scale*=1.2" |
| 7203 | "\n" "x=s(2*a(1)+x)" |
| 7204 | "\n" "scale=s" |
| 7205 | "\n" "ibase=b" |
| 7206 | "\n" "return(x/1)" |
| 7207 | "\n" "}" |
| 7208 | "\n" "define a(x){" |
| 7209 | "\n" "auto b,s,r,n,a,m,t,f,i,u" |
| 7210 | "\n" "b=ibase" |
| 7211 | "\n" "ibase=A" |
| 7212 | "\n" "n=1" |
| 7213 | "\n" "if(x<0){" |
| 7214 | "\n" "n=-1" |
| 7215 | "\n" "x=-x" |
| 7216 | "\n" "}" |
Denys Vlasenko | 3ac0c21 | 2018-12-14 01:01:01 +0100 | [diff] [blame] | 7217 | "\n" "if(scale<65){" |
| 7218 | "\n" "if(x==1)return(.7853981633974483096156608458198757210492923498437764552437361480/n)" |
| 7219 | "\n" "if(x==.2)return(.1973955598498807583700497651947902934475851037878521015176889402/n)" |
Denys Vlasenko | 0ad36c4 | 2018-12-05 16:21:43 +0100 | [diff] [blame] | 7220 | "\n" "}" |
| 7221 | "\n" "s=scale" |
| 7222 | "\n" "if(x>.2){" |
| 7223 | "\n" "scale+=5" |
| 7224 | "\n" "a=a(.2)" |
| 7225 | "\n" "}" |
| 7226 | "\n" "scale=s+3" |
| 7227 | "\n" "while(x>.2){" |
| 7228 | "\n" "m+=1" |
| 7229 | "\n" "x=(x-.2)/(1+.2*x)" |
| 7230 | "\n" "}" |
| 7231 | "\n" "r=u=x" |
| 7232 | "\n" "f=-x*x" |
| 7233 | "\n" "t=1" |
Denys Vlasenko | 3ac0c21 | 2018-12-14 01:01:01 +0100 | [diff] [blame] | 7234 | "\n" "for(i=3;t;i+=2){" |
Denys Vlasenko | 0ad36c4 | 2018-12-05 16:21:43 +0100 | [diff] [blame] | 7235 | "\n" "u*=f" |
| 7236 | "\n" "t=u/i" |
| 7237 | "\n" "r+=t" |
| 7238 | "\n" "}" |
| 7239 | "\n" "scale=s" |
| 7240 | "\n" "ibase=b" |
| 7241 | "\n" "return((m*a+r)/n)" |
| 7242 | "\n" "}" |
| 7243 | "\n" "define j(n,x){" |
| 7244 | "\n" "auto b,s,o,a,i,v,f" |
| 7245 | "\n" "b=ibase" |
| 7246 | "\n" "ibase=A" |
| 7247 | "\n" "s=scale" |
| 7248 | "\n" "scale=0" |
| 7249 | "\n" "n/=1" |
| 7250 | "\n" "if(n<0){" |
| 7251 | "\n" "n=-n" |
Denys Vlasenko | 203210e | 2018-12-14 09:53:50 +0100 | [diff] [blame] | 7252 | "\n" "o=n%2" |
Denys Vlasenko | 0ad36c4 | 2018-12-05 16:21:43 +0100 | [diff] [blame] | 7253 | "\n" "}" |
| 7254 | "\n" "a=1" |
| 7255 | "\n" "for(i=2;i<=n;++i)a*=i" |
| 7256 | "\n" "scale=1.5*s" |
| 7257 | "\n" "a=(x^n)/2^n/a" |
| 7258 | "\n" "r=v=1" |
| 7259 | "\n" "f=-x*x/4" |
Denys Vlasenko | c06537d | 2018-12-14 10:10:37 +0100 | [diff] [blame] | 7260 | "\n" "scale+=length(a)-scale(a)" |
Denys Vlasenko | 3ac0c21 | 2018-12-14 01:01:01 +0100 | [diff] [blame] | 7261 | "\n" "for(i=1;v;++i){" |
Denys Vlasenko | 0ad36c4 | 2018-12-05 16:21:43 +0100 | [diff] [blame] | 7262 | "\n" "v=v*f/i/(n+i)" |
| 7263 | "\n" "r+=v" |
| 7264 | "\n" "}" |
| 7265 | "\n" "scale=s" |
| 7266 | "\n" "ibase=b" |
Denys Vlasenko | 3ac0c21 | 2018-12-14 01:01:01 +0100 | [diff] [blame] | 7267 | "\n" "if(o)a=-a" |
Denys Vlasenko | 0ad36c4 | 2018-12-05 16:21:43 +0100 | [diff] [blame] | 7268 | "\n" "return(a*r/1)" |
| 7269 | "\n" "}" |
| 7270 | }; |
| 7271 | #endif // ENABLE_BC |
| 7272 | |
Denys Vlasenko | 19f1107 | 2018-12-12 22:48:19 +0100 | [diff] [blame] | 7273 | static BC_STATUS zbc_vm_exec(void) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 7274 | { |
Denys Vlasenko | 6d0be10 | 2018-12-06 18:41:59 +0100 | [diff] [blame] | 7275 | BcStatus s; |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 7276 | size_t i; |
| 7277 | |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 7278 | #if ENABLE_BC |
Denys Vlasenko | d70d4a0 | 2018-12-04 20:58:40 +0100 | [diff] [blame] | 7279 | if (option_mask32 & BC_FLAG_L) { |
Denys Vlasenko | 0ad36c4 | 2018-12-05 16:21:43 +0100 | [diff] [blame] | 7280 | // We know that internal library is not buggy, |
| 7281 | // thus error checking is normally disabled. |
| 7282 | # define DEBUG_LIB 0 |
Denys Vlasenko | 0409ad3 | 2018-12-05 16:39:22 +0100 | [diff] [blame] | 7283 | bc_lex_file(&G.prs.l); |
Denys Vlasenko | 2ea53a4 | 2018-12-14 17:51:17 +0100 | [diff] [blame] | 7284 | s = zbc_vm_process(bc_lib); |
Denys Vlasenko | 19f1107 | 2018-12-12 22:48:19 +0100 | [diff] [blame] | 7285 | if (DEBUG_LIB && s) RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 7286 | } |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 7287 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 7288 | |
Denys Vlasenko | 6d0be10 | 2018-12-06 18:41:59 +0100 | [diff] [blame] | 7289 | s = BC_STATUS_SUCCESS; |
Denys Vlasenko | 6d9146a | 2018-12-02 15:48:37 +0100 | [diff] [blame] | 7290 | for (i = 0; !s && i < G.files.len; ++i) |
Denys Vlasenko | d6ad366 | 2018-12-12 21:39:10 +0100 | [diff] [blame] | 7291 | s = zbc_vm_file(*((char **) bc_vec_item(&G.files, i))); |
Denys Vlasenko | 6d0be10 | 2018-12-06 18:41:59 +0100 | [diff] [blame] | 7292 | if (ENABLE_FEATURE_CLEAN_UP && s && !G_ttyin) { |
| 7293 | // Debug config, non-interactive mode: |
| 7294 | // return all the way back to main. |
| 7295 | // Non-debug builds do not come here, they exit. |
Denys Vlasenko | 19f1107 | 2018-12-12 22:48:19 +0100 | [diff] [blame] | 7296 | RETURN_STATUS(s); |
Denys Vlasenko | 9b70f19 | 2018-12-04 20:51:40 +0100 | [diff] [blame] | 7297 | } |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 7298 | |
Denys Vlasenko | 91cde95 | 2018-12-10 20:56:08 +0100 | [diff] [blame] | 7299 | if (IS_BC || (option_mask32 & BC_FLAG_I)) |
Denys Vlasenko | 19f1107 | 2018-12-12 22:48:19 +0100 | [diff] [blame] | 7300 | s = zbc_vm_stdin(); |
Denys Vlasenko | 6d0be10 | 2018-12-06 18:41:59 +0100 | [diff] [blame] | 7301 | |
Denys Vlasenko | 19f1107 | 2018-12-12 22:48:19 +0100 | [diff] [blame] | 7302 | RETURN_STATUS(s); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 7303 | } |
Denys Vlasenko | 19f1107 | 2018-12-12 22:48:19 +0100 | [diff] [blame] | 7304 | #if ERRORS_ARE_FATAL |
| 7305 | # define zbc_vm_exec(...) (zbc_vm_exec(__VA_ARGS__), BC_STATUS_SUCCESS) |
| 7306 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 7307 | |
Denys Vlasenko | 785e4b3 | 2018-12-02 17:18:52 +0100 | [diff] [blame] | 7308 | #if ENABLE_FEATURE_CLEAN_UP |
Denys Vlasenko | e873ff9 | 2018-12-06 00:29:22 +0100 | [diff] [blame] | 7309 | static void bc_program_free(void) |
Denys Vlasenko | 785e4b3 | 2018-12-02 17:18:52 +0100 | [diff] [blame] | 7310 | { |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 7311 | bc_num_free(&G.prog.ib); |
| 7312 | bc_num_free(&G.prog.ob); |
| 7313 | bc_num_free(&G.prog.hexb); |
Denys Vlasenko | 785e4b3 | 2018-12-02 17:18:52 +0100 | [diff] [blame] | 7314 | # if ENABLE_DC |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 7315 | bc_num_free(&G.prog.strmb); |
Denys Vlasenko | 785e4b3 | 2018-12-02 17:18:52 +0100 | [diff] [blame] | 7316 | # endif |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 7317 | bc_vec_free(&G.prog.fns); |
| 7318 | bc_vec_free(&G.prog.fn_map); |
| 7319 | bc_vec_free(&G.prog.vars); |
| 7320 | bc_vec_free(&G.prog.var_map); |
| 7321 | bc_vec_free(&G.prog.arrs); |
| 7322 | bc_vec_free(&G.prog.arr_map); |
| 7323 | bc_vec_free(&G.prog.strs); |
| 7324 | bc_vec_free(&G.prog.consts); |
| 7325 | bc_vec_free(&G.prog.results); |
| 7326 | bc_vec_free(&G.prog.stack); |
| 7327 | bc_num_free(&G.prog.last); |
| 7328 | bc_num_free(&G.prog.zero); |
| 7329 | bc_num_free(&G.prog.one); |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 7330 | bc_vec_free(&G.stdin_buffer); |
Denys Vlasenko | 785e4b3 | 2018-12-02 17:18:52 +0100 | [diff] [blame] | 7331 | } |
| 7332 | |
Denys Vlasenko | 6d9146a | 2018-12-02 15:48:37 +0100 | [diff] [blame] | 7333 | static void bc_vm_free(void) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 7334 | { |
Denys Vlasenko | 6d9146a | 2018-12-02 15:48:37 +0100 | [diff] [blame] | 7335 | bc_vec_free(&G.files); |
Denys Vlasenko | a1d3ca2 | 2018-12-02 18:26:38 +0100 | [diff] [blame] | 7336 | bc_program_free(); |
Denys Vlasenko | 6d9146a | 2018-12-02 15:48:37 +0100 | [diff] [blame] | 7337 | bc_parse_free(&G.prs); |
| 7338 | free(G.env_args); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 7339 | } |
Denys Vlasenko | 785e4b3 | 2018-12-02 17:18:52 +0100 | [diff] [blame] | 7340 | #endif |
| 7341 | |
Denys Vlasenko | 1ff1c70 | 2018-12-06 00:46:09 +0100 | [diff] [blame] | 7342 | static void bc_program_init(void) |
Denys Vlasenko | 785e4b3 | 2018-12-02 17:18:52 +0100 | [diff] [blame] | 7343 | { |
| 7344 | size_t idx; |
| 7345 | BcInstPtr ip; |
| 7346 | |
Denys Vlasenko | 8226912 | 2018-12-14 16:30:56 +0100 | [diff] [blame] | 7347 | // memset(&G.prog, 0, sizeof(G.prog)); - already is |
Denys Vlasenko | 785e4b3 | 2018-12-02 17:18:52 +0100 | [diff] [blame] | 7348 | memset(&ip, 0, sizeof(BcInstPtr)); |
| 7349 | |
Denys Vlasenko | 8226912 | 2018-12-14 16:30:56 +0100 | [diff] [blame] | 7350 | // G.prog.nchars = G.prog.scale = 0; - already is |
Denys Vlasenko | e20e00d | 2018-12-09 11:44:20 +0100 | [diff] [blame] | 7351 | bc_num_init_DEF_SIZE(&G.prog.ib); |
Denys Vlasenko | 785e4b3 | 2018-12-02 17:18:52 +0100 | [diff] [blame] | 7352 | bc_num_ten(&G.prog.ib); |
| 7353 | G.prog.ib_t = 10; |
| 7354 | |
Denys Vlasenko | e20e00d | 2018-12-09 11:44:20 +0100 | [diff] [blame] | 7355 | bc_num_init_DEF_SIZE(&G.prog.ob); |
Denys Vlasenko | 785e4b3 | 2018-12-02 17:18:52 +0100 | [diff] [blame] | 7356 | bc_num_ten(&G.prog.ob); |
| 7357 | G.prog.ob_t = 10; |
| 7358 | |
Denys Vlasenko | e20e00d | 2018-12-09 11:44:20 +0100 | [diff] [blame] | 7359 | bc_num_init_DEF_SIZE(&G.prog.hexb); |
Denys Vlasenko | 785e4b3 | 2018-12-02 17:18:52 +0100 | [diff] [blame] | 7360 | bc_num_ten(&G.prog.hexb); |
| 7361 | G.prog.hexb.num[0] = 6; |
| 7362 | |
| 7363 | #if ENABLE_DC |
Denys Vlasenko | e20e00d | 2018-12-09 11:44:20 +0100 | [diff] [blame] | 7364 | bc_num_init_DEF_SIZE(&G.prog.strmb); |
Denys Vlasenko | 785e4b3 | 2018-12-02 17:18:52 +0100 | [diff] [blame] | 7365 | bc_num_ulong2num(&G.prog.strmb, UCHAR_MAX + 1); |
| 7366 | #endif |
| 7367 | |
Denys Vlasenko | e20e00d | 2018-12-09 11:44:20 +0100 | [diff] [blame] | 7368 | bc_num_init_DEF_SIZE(&G.prog.last); |
Denys Vlasenko | 3129f70 | 2018-12-09 12:04:44 +0100 | [diff] [blame] | 7369 | //bc_num_zero(&G.prog.last); - already is |
Denys Vlasenko | 785e4b3 | 2018-12-02 17:18:52 +0100 | [diff] [blame] | 7370 | |
Denys Vlasenko | e20e00d | 2018-12-09 11:44:20 +0100 | [diff] [blame] | 7371 | bc_num_init_DEF_SIZE(&G.prog.zero); |
Denys Vlasenko | 3129f70 | 2018-12-09 12:04:44 +0100 | [diff] [blame] | 7372 | //bc_num_zero(&G.prog.zero); - already is |
Denys Vlasenko | 785e4b3 | 2018-12-02 17:18:52 +0100 | [diff] [blame] | 7373 | |
Denys Vlasenko | e20e00d | 2018-12-09 11:44:20 +0100 | [diff] [blame] | 7374 | bc_num_init_DEF_SIZE(&G.prog.one); |
Denys Vlasenko | 785e4b3 | 2018-12-02 17:18:52 +0100 | [diff] [blame] | 7375 | bc_num_one(&G.prog.one); |
| 7376 | |
| 7377 | bc_vec_init(&G.prog.fns, sizeof(BcFunc), bc_func_free); |
Denys Vlasenko | cb9a99f | 2018-12-04 21:54:33 +0100 | [diff] [blame] | 7378 | bc_vec_init(&G.prog.fn_map, sizeof(BcId), bc_id_free); |
Denys Vlasenko | 785e4b3 | 2018-12-02 17:18:52 +0100 | [diff] [blame] | 7379 | |
Denys Vlasenko | 1f67e93 | 2018-12-03 00:08:59 +0100 | [diff] [blame] | 7380 | bc_program_addFunc(xstrdup("(main)"), &idx); |
| 7381 | bc_program_addFunc(xstrdup("(read)"), &idx); |
Denys Vlasenko | 785e4b3 | 2018-12-02 17:18:52 +0100 | [diff] [blame] | 7382 | |
| 7383 | bc_vec_init(&G.prog.vars, sizeof(BcVec), bc_vec_free); |
Denys Vlasenko | cb9a99f | 2018-12-04 21:54:33 +0100 | [diff] [blame] | 7384 | bc_vec_init(&G.prog.var_map, sizeof(BcId), bc_id_free); |
Denys Vlasenko | 785e4b3 | 2018-12-02 17:18:52 +0100 | [diff] [blame] | 7385 | |
| 7386 | bc_vec_init(&G.prog.arrs, sizeof(BcVec), bc_vec_free); |
Denys Vlasenko | cb9a99f | 2018-12-04 21:54:33 +0100 | [diff] [blame] | 7387 | bc_vec_init(&G.prog.arr_map, sizeof(BcId), bc_id_free); |
Denys Vlasenko | 785e4b3 | 2018-12-02 17:18:52 +0100 | [diff] [blame] | 7388 | |
| 7389 | bc_vec_init(&G.prog.strs, sizeof(char *), bc_string_free); |
| 7390 | bc_vec_init(&G.prog.consts, sizeof(char *), bc_string_free); |
| 7391 | bc_vec_init(&G.prog.results, sizeof(BcResult), bc_result_free); |
| 7392 | bc_vec_init(&G.prog.stack, sizeof(BcInstPtr), NULL); |
| 7393 | bc_vec_push(&G.prog.stack, &ip); |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 7394 | |
| 7395 | bc_char_vec_init(&G.stdin_buffer); |
Denys Vlasenko | 785e4b3 | 2018-12-02 17:18:52 +0100 | [diff] [blame] | 7396 | } |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 7397 | |
Denys Vlasenko | 6d0be10 | 2018-12-06 18:41:59 +0100 | [diff] [blame] | 7398 | static int bc_vm_init(const char *env_len) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 7399 | { |
Denys Vlasenko | 6d0be10 | 2018-12-06 18:41:59 +0100 | [diff] [blame] | 7400 | #if ENABLE_FEATURE_EDITING |
| 7401 | G.line_input_state = new_line_input_t(DO_HISTORY); |
| 7402 | #endif |
| 7403 | G.prog.len = bc_vm_envLen(env_len); |
| 7404 | |
Denys Vlasenko | 6d9146a | 2018-12-02 15:48:37 +0100 | [diff] [blame] | 7405 | bc_vec_init(&G.files, sizeof(char *), NULL); |
Denys Vlasenko | 5f263f4 | 2018-12-13 22:49:59 +0100 | [diff] [blame] | 7406 | IF_BC(if (IS_BC) bc_vm_envArgs();) |
Denys Vlasenko | 1ff1c70 | 2018-12-06 00:46:09 +0100 | [diff] [blame] | 7407 | bc_program_init(); |
Denys Vlasenko | c2265f5 | 2018-12-12 23:10:08 +0100 | [diff] [blame] | 7408 | bc_parse_create(&G.prs, BC_PROG_MAIN); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 7409 | |
Denys Vlasenko | 89e785a | 2018-12-13 16:35:52 +0100 | [diff] [blame] | 7410 | //TODO: in GNU bc, the check is (isatty(0) && isatty(1)), |
| 7411 | //-i option unconditionally enables this regardless of isatty(): |
Denys Vlasenko | 1a6a482 | 2018-12-06 09:20:32 +0100 | [diff] [blame] | 7412 | if (isatty(0)) { |
Denys Vlasenko | d38af48 | 2018-12-04 19:11:02 +0100 | [diff] [blame] | 7413 | #if ENABLE_FEATURE_BC_SIGNALS |
Denys Vlasenko | 1a6a482 | 2018-12-06 09:20:32 +0100 | [diff] [blame] | 7414 | G_ttyin = 1; |
Denys Vlasenko | 17c5472 | 2018-12-04 21:21:32 +0100 | [diff] [blame] | 7415 | // With SA_RESTART, most system calls will restart |
| 7416 | // (IOW: they won't fail with EINTR). |
| 7417 | // In particular, this means ^C won't cause |
| 7418 | // stdout to get into "error state" if SIGINT hits |
| 7419 | // within write() syscall. |
Denys Vlasenko | 89e785a | 2018-12-13 16:35:52 +0100 | [diff] [blame] | 7420 | // |
| 7421 | // The downside is that ^C while tty input is taken |
Denys Vlasenko | 17c5472 | 2018-12-04 21:21:32 +0100 | [diff] [blame] | 7422 | // will only be handled after [Enter] since read() |
| 7423 | // from stdin is not interrupted by ^C either, |
| 7424 | // it restarts, thus fgetc() does not return on ^C. |
Denys Vlasenko | 89e785a | 2018-12-13 16:35:52 +0100 | [diff] [blame] | 7425 | // (This problem manifests only if line editing is disabled) |
Denys Vlasenko | 17c5472 | 2018-12-04 21:21:32 +0100 | [diff] [blame] | 7426 | signal_SA_RESTART_empty_mask(SIGINT, record_signo); |
| 7427 | |
| 7428 | // Without SA_RESTART, this exhibits a bug: |
| 7429 | // "while (1) print 1" and try ^C-ing it. |
| 7430 | // Intermittently, instead of returning to input line, |
| 7431 | // you'll get "output error: Interrupted system call" |
| 7432 | // and exit. |
| 7433 | //signal_no_SA_RESTART_empty_mask(SIGINT, record_signo); |
Denys Vlasenko | d38af48 | 2018-12-04 19:11:02 +0100 | [diff] [blame] | 7434 | #endif |
Denys Vlasenko | 6d0be10 | 2018-12-06 18:41:59 +0100 | [diff] [blame] | 7435 | return 1; // "tty" |
Denys Vlasenko | d38af48 | 2018-12-04 19:11:02 +0100 | [diff] [blame] | 7436 | } |
Denys Vlasenko | 6d0be10 | 2018-12-06 18:41:59 +0100 | [diff] [blame] | 7437 | return 0; // "not a tty" |
| 7438 | } |
Denys Vlasenko | 1ff1c70 | 2018-12-06 00:46:09 +0100 | [diff] [blame] | 7439 | |
Denys Vlasenko | 6d0be10 | 2018-12-06 18:41:59 +0100 | [diff] [blame] | 7440 | static BcStatus bc_vm_run(void) |
| 7441 | { |
Denys Vlasenko | 19f1107 | 2018-12-12 22:48:19 +0100 | [diff] [blame] | 7442 | BcStatus st = zbc_vm_exec(); |
Denys Vlasenko | 785e4b3 | 2018-12-02 17:18:52 +0100 | [diff] [blame] | 7443 | #if ENABLE_FEATURE_CLEAN_UP |
Denys Vlasenko | c7a7ce0 | 2018-12-06 23:06:57 +0100 | [diff] [blame] | 7444 | if (G_exiting) // it was actually "halt" or "quit" |
| 7445 | st = EXIT_SUCCESS; |
Denys Vlasenko | 6d9146a | 2018-12-02 15:48:37 +0100 | [diff] [blame] | 7446 | bc_vm_free(); |
Denys Vlasenko | 95f93bd | 2018-12-06 10:29:12 +0100 | [diff] [blame] | 7447 | # if ENABLE_FEATURE_EDITING |
| 7448 | free_line_input_t(G.line_input_state); |
| 7449 | # endif |
Denys Vlasenko | e873ff9 | 2018-12-06 00:29:22 +0100 | [diff] [blame] | 7450 | FREE_G(); |
Denys Vlasenko | 785e4b3 | 2018-12-02 17:18:52 +0100 | [diff] [blame] | 7451 | #endif |
Denys Vlasenko | d1d29b4 | 2018-12-16 16:03:03 +0100 | [diff] [blame] | 7452 | dbg_exec("exiting with exitcode %d", st); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 7453 | return st; |
| 7454 | } |
| 7455 | |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 7456 | #if ENABLE_BC |
Denys Vlasenko | 5a9fef5 | 2018-12-02 14:35:32 +0100 | [diff] [blame] | 7457 | int bc_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
Denys Vlasenko | 1ff1c70 | 2018-12-06 00:46:09 +0100 | [diff] [blame] | 7458 | int bc_main(int argc UNUSED_PARAM, char **argv) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 7459 | { |
Denys Vlasenko | 6d0be10 | 2018-12-06 18:41:59 +0100 | [diff] [blame] | 7460 | int is_tty; |
| 7461 | |
Denys Vlasenko | 6d9146a | 2018-12-02 15:48:37 +0100 | [diff] [blame] | 7462 | INIT_G(); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 7463 | |
Denys Vlasenko | 6d0be10 | 2018-12-06 18:41:59 +0100 | [diff] [blame] | 7464 | is_tty = bc_vm_init("BC_LINE_LENGTH"); |
| 7465 | |
| 7466 | bc_args(argv); |
| 7467 | |
| 7468 | if (is_tty && !(option_mask32 & BC_FLAG_Q)) |
| 7469 | bc_vm_info(); |
| 7470 | |
| 7471 | return bc_vm_run(); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 7472 | } |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 7473 | #endif |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 7474 | |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 7475 | #if ENABLE_DC |
Denys Vlasenko | 5a9fef5 | 2018-12-02 14:35:32 +0100 | [diff] [blame] | 7476 | int dc_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
Denys Vlasenko | 1ff1c70 | 2018-12-06 00:46:09 +0100 | [diff] [blame] | 7477 | int dc_main(int argc UNUSED_PARAM, char **argv) |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 7478 | { |
Denys Vlasenko | 6d0be10 | 2018-12-06 18:41:59 +0100 | [diff] [blame] | 7479 | int noscript; |
| 7480 | |
Denys Vlasenko | 6d9146a | 2018-12-02 15:48:37 +0100 | [diff] [blame] | 7481 | INIT_G(); |
Denys Vlasenko | 8226912 | 2018-12-14 16:30:56 +0100 | [diff] [blame] | 7482 | |
| 7483 | // TODO: dc (GNU bc 1.07.1) 1.4.1 seems to use width |
| 7484 | // 1 char wider than bc from the same package. |
| 7485 | // Both default width, and xC_LINE_LENGTH=N are wider: |
| 7486 | // "DC_LINE_LENGTH=5 dc -e'123456 p'" prints: |
Denys Vlasenko | 0a23814 | 2018-12-14 16:48:34 +0100 | [diff] [blame] | 7487 | // |1234\ | |
| 7488 | // |56 | |
Denys Vlasenko | 8226912 | 2018-12-14 16:30:56 +0100 | [diff] [blame] | 7489 | // "echo '123456' | BC_LINE_LENGTH=5 bc" prints: |
Denys Vlasenko | 0a23814 | 2018-12-14 16:48:34 +0100 | [diff] [blame] | 7490 | // |123\ | |
| 7491 | // |456 | |
Denys Vlasenko | 8226912 | 2018-12-14 16:30:56 +0100 | [diff] [blame] | 7492 | // Do the same, or it's a bug? |
Denys Vlasenko | 6d0be10 | 2018-12-06 18:41:59 +0100 | [diff] [blame] | 7493 | bc_vm_init("DC_LINE_LENGTH"); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 7494 | |
Denys Vlasenko | 6d0be10 | 2018-12-06 18:41:59 +0100 | [diff] [blame] | 7495 | // Run -e'SCRIPT' and -fFILE in order of appearance, then handle FILEs |
| 7496 | noscript = BC_FLAG_I; |
| 7497 | for (;;) { |
| 7498 | int n = getopt(argc, argv, "e:f:x"); |
| 7499 | if (n <= 0) |
| 7500 | break; |
| 7501 | switch (n) { |
| 7502 | case 'e': |
| 7503 | noscript = 0; |
Denys Vlasenko | d6ad366 | 2018-12-12 21:39:10 +0100 | [diff] [blame] | 7504 | n = zbc_vm_process(optarg); |
Denys Vlasenko | 6d0be10 | 2018-12-06 18:41:59 +0100 | [diff] [blame] | 7505 | if (n) return n; |
| 7506 | break; |
| 7507 | case 'f': |
| 7508 | noscript = 0; |
Denys Vlasenko | d6ad366 | 2018-12-12 21:39:10 +0100 | [diff] [blame] | 7509 | n = zbc_vm_file(optarg); |
| 7510 | if (n) return n; |
Denys Vlasenko | 6d0be10 | 2018-12-06 18:41:59 +0100 | [diff] [blame] | 7511 | break; |
| 7512 | case 'x': |
| 7513 | option_mask32 |= DC_FLAG_X; |
| 7514 | break; |
| 7515 | default: |
| 7516 | bb_show_usage(); |
| 7517 | } |
| 7518 | } |
| 7519 | argv += optind; |
| 7520 | |
| 7521 | while (*argv) { |
| 7522 | noscript = 0; |
| 7523 | bc_vec_push(&G.files, argv++); |
| 7524 | } |
| 7525 | |
| 7526 | option_mask32 |= noscript; // set BC_FLAG_I if we need to interpret stdin |
| 7527 | |
| 7528 | return bc_vm_run(); |
Gavin Howard | 01055ba | 2018-11-03 11:00:21 -0600 | [diff] [blame] | 7529 | } |
Denys Vlasenko | ef869ec | 2018-12-02 18:49:16 +0100 | [diff] [blame] | 7530 | #endif |
Denys Vlasenko | 9ca9ef2 | 2018-12-06 11:31:14 +0100 | [diff] [blame] | 7531 | |
| 7532 | #endif // not DC_SMALL |