api: fromjson/tojson enum flag support
Represent enum flags as JSON arrays (as these can have multiple values).
Add unit tests.
Type: improvement
Change-Id: I680c5b6f76ef6f05f360e2f3b9c4cbb927e15d7d
Signed-off-by: Ole Troan <ot@cisco.com>
diff --git a/src/tools/vppapigen/vppapigen_c.py b/src/tools/vppapigen/vppapigen_c.py
index 44f86be..66e0c2f 100644
--- a/src/tools/vppapigen/vppapigen_c.py
+++ b/src/tools/vppapigen/vppapigen_c.py
@@ -187,7 +187,21 @@
write('}\n')
_dispatch['Enum'] = print_enum
- _dispatch['EnumFlag'] = print_enum
+
+ def print_enum_flag(self, o):
+ '''Create cJSON object (string) for VPP API enum'''
+ write = self.stream.write
+ write('static inline cJSON *vl_api_{name}_t_tojson '
+ '(vl_api_{name}_t a) {{\n'.format(name=o.name))
+ write(' cJSON *array = cJSON_CreateArray();\n')
+
+ for b in o.block:
+ write(' if (a & {})\n'.format(b[0]))
+ write(' cJSON_AddItemToArray(array, cJSON_CreateString("{}"));\n'.format(b[0]))
+ write(' return array;\n')
+ write('}\n')
+
+ _dispatch['EnumFlag'] = print_enum_flag
def print_typedef(self, o):
'''Create cJSON (dictionary) object from VPP API typedef'''
@@ -456,7 +470,27 @@
write('}\n')
_dispatch['Enum'] = print_enum
- _dispatch['EnumFlag'] = print_enum
+
+ def print_enum_flag(self, o):
+ '''Convert to JSON enum(string) to VPP API enum (int)'''
+ write = self.stream.write
+ write('static inline void *vl_api_{n}_t_fromjson '
+ '(void *mp, int *len, cJSON *o, vl_api_{n}_t *a) {{\n'
+ .format(n=o.name))
+ write(' int i;\n')
+ write(' *a = 0;\n')
+ write(' for (i = 0; i < cJSON_GetArraySize(o); i++) {\n')
+ write(' cJSON *e = cJSON_GetArrayItem(o, i);\n')
+ write(' char *p = cJSON_GetStringValue(e);\n')
+ write(' if (!p) return 0;\n')
+ for b in o.block:
+ write(' if (strcmp(p, "{}") == 0) *a |= {};\n'
+ .format(b[0], b[1]))
+ write(' }\n')
+ write(' return mp;\n')
+ write('}\n')
+
+ _dispatch['EnumFlag'] = print_enum_flag
def print_typedef(self, o):
'''Convert from JSON object to VPP API binary representation'''