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Add getNumberValue function

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* Add GetNumberValue function and testcase

Co-authored-by: Alan Wang <wp_scut@163.com>
This commit is contained in:
Sang-Heon Jeon 2020-04-02 18:06:56 +09:00 committed by GitHub
parent 2371b7bc66
commit 5437b79086
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 30 additions and 3 deletions
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16
cJSON.c
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@ -71,14 +71,26 @@ CJSON_PUBLIC(const char *) cJSON_GetErrorPtr(void)
return (const char*) (global_error.json + global_error.position);
}
CJSON_PUBLIC(char *) cJSON_GetStringValue(cJSON *item) {
if (!cJSON_IsString(item)) {
CJSON_PUBLIC(char *) cJSON_GetStringValue(cJSON *item)
{
if (!cJSON_IsString(item))
{
return NULL;
}
return item->valuestring;
}
CJSON_PUBLIC(double) cJSON_GetNumberValue(cJSON *item)
{
if (!cJSON_IsNumber(item))
{
return 0.0/0.0;
}
return item->valuedouble;
}
/* This is a safeguard to prevent copy-pasters from using incompatible C and header files */
#if (CJSON_VERSION_MAJOR != 1) || (CJSON_VERSION_MINOR != 7) || (CJSON_VERSION_PATCH != 7)
#error cJSON.h and cJSON.c have different versions. Make sure that both have the same.

3
cJSON.h
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@ -167,8 +167,9 @@ CJSON_PUBLIC(cJSON_bool) cJSON_HasObjectItem(const cJSON *object, const char *st
/* For analysing failed parses. This returns a pointer to the parse error. You'll probably need to look a few chars back to make sense of it. Defined when cJSON_Parse() returns 0. 0 when cJSON_Parse() succeeds. */
CJSON_PUBLIC(const char *) cJSON_GetErrorPtr(void);
/* Check if the item is a string and return its valuestring */
/* Check item type and return its value */
CJSON_PUBLIC(char *) cJSON_GetStringValue(cJSON *item);
CJSON_PUBLIC(double) cJSON_GetNumberValue(cJSON *item);
/* These functions check the type of an item */
CJSON_PUBLIC(cJSON_bool) cJSON_IsInvalid(const cJSON * const item);

14
tests/misc_tests.c
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@ -463,6 +463,19 @@ static void cjson_get_string_value_should_get_a_string(void)
cJSON_Delete(string);
}
static void cjson_get_number_value_should_get_a_number(void)
{
cJSON *string = cJSON_CreateString("test");
cJSON *number = cJSON_CreateNumber(1);
TEST_ASSERT_EQUAL_DOUBLE(cJSON_GetNumberValue(number), number->valuedouble);
TEST_ASSERT_DOUBLE_IS_NAN(cJSON_GetNumberValue(string));
TEST_ASSERT_DOUBLE_IS_NAN(cJSON_GetNumberValue(NULL));
cJSON_Delete(number);
cJSON_Delete(string);
}
static void cjson_create_string_reference_should_create_a_string_reference(void) {
const char *string = "I am a string!";
@ -564,6 +577,7 @@ int main(void)
RUN_TEST(skip_utf8_bom_should_skip_bom);
RUN_TEST(skip_utf8_bom_should_not_skip_bom_if_not_at_beginning);
RUN_TEST(cjson_get_string_value_should_get_a_string);
RUN_TEST(cjson_get_number_value_should_get_a_number);
RUN_TEST(cjson_create_string_reference_should_create_a_string_reference);
RUN_TEST(cjson_create_object_reference_should_create_an_object_reference);
RUN_TEST(cjson_create_array_reference_should_create_an_array_reference);