int json_value_equals()

in lib/parson.c [2324:2387]

• 64 lines of code
• 18 McCabe index (conditional complexity)

int json_value_equals(const JSON_Value *a, const JSON_Value *b) {
    JSON_Object *a_object = NULL, *b_object = NULL;
    JSON_Array *a_array = NULL, *b_array = NULL;
    const JSON_String *a_string = NULL, *b_string = NULL;
    const char *key = NULL;
    size_t a_count = 0, b_count = 0, i = 0;
    JSON_Value_Type a_type, b_type;
    a_type = json_value_get_type(a);
    b_type = json_value_get_type(b);
    if (a_type != b_type) {
        return PARSON_FALSE;
    }
    switch (a_type) {
        case JSONArray:
            a_array = json_value_get_array(a);
            b_array = json_value_get_array(b);
            a_count = json_array_get_count(a_array);
            b_count = json_array_get_count(b_array);
            if (a_count != b_count) {
                return PARSON_FALSE;
            }
            for (i = 0; i < a_count; i++) {
                if (!json_value_equals(json_array_get_value(a_array, i),
                                       json_array_get_value(b_array, i))) {
                    return PARSON_FALSE;
                }
            }
            return PARSON_TRUE;
        case JSONObject:
            a_object = json_value_get_object(a);
            b_object = json_value_get_object(b);
            a_count = json_object_get_count(a_object);
            b_count = json_object_get_count(b_object);
            if (a_count != b_count) {
                return PARSON_FALSE;
            }
            for (i = 0; i < a_count; i++) {
                key = json_object_get_name(a_object, i);
                if (!json_value_equals(json_object_get_value(a_object, key),
                                       json_object_get_value(b_object, key))) {
                    return PARSON_FALSE;
                }
            }
            return PARSON_TRUE;
        case JSONString:
            a_string = json_value_get_string_desc(a);
            b_string = json_value_get_string_desc(b);
            if (a_string == NULL || b_string == NULL) {
                return PARSON_FALSE; /* shouldn't happen */
            }
            return a_string->length == b_string->length &&
                   memcmp(a_string->chars, b_string->chars, a_string->length) == 0;
        case JSONBoolean:
            return json_value_get_boolean(a) == json_value_get_boolean(b);
        case JSONNumber:
            return fabs(json_value_get_number(a) - json_value_get_number(b)) < 0.000001; /* EPSILON */
        case JSONError:
            return PARSON_TRUE;
        case JSONNull:
            return PARSON_TRUE;
        default:
            return PARSON_TRUE;
    }
}