Rename json_object_add_int() to json_object_int_inc() and eliminate the "int64" variant since we store 64-bit values internally anyway.

.gitignore

@@ -27,6 +27,7 @@
 /tests/test_compare
 /tests/test_double_serializer
 /tests/test_float
+/tests/test_int_add
 /tests/test_json_pointer
 /tests/test_locale
 /tests/test_null

json_object.c

@@ -666,20 +666,6 @@ int json_object_set_int(struct json_object *jso,int new_value){
 	return 1;
 }
 
-int json_object_add_int(struct json_object *jso, int val) {
-	if (!jso || jso->o_type != json_type_int)
-		return 0;
-	if (val > 0 && jso->o.c_int64 > INT32_MAX - val) {
-		jso->o.c_int64 = INT32_MAX;
-	} else if (val < 0 && jso->o.c_int64 < INT32_MIN - val) {
-		jso->o.c_int64 = INT32_MIN;
-	} else {
-		jso->o.c_int64 += val;
-	}
-	return 1;
-}
-
-
 struct json_object* json_object_new_int64(int64_t i)
 {
 	struct json_object *jso = json_object_new(json_type_int);
@@ -724,7 +710,7 @@ int json_object_set_int64(struct json_object *jso,int64_t new_value){
 	return 1;
 }
 
-int json_object_add_int64(struct json_object *jso, int64_t val) {
+int json_object_int_inc(struct json_object *jso, int64_t val) {
 	if (!jso || jso->o_type != json_type_int)
 		return 0;
 	if (val > 0 && jso->o.c_int64 > INT64_MAX - val) {

json_object.h

@@ -710,7 +710,7 @@ JSON_EXPORT int32_t json_object_get_int(const struct json_object *obj);
  * 
  * The type of obj is checked to be a json_type_int and 0 is returned 
  * if it is not without any further actions. If type of obj is json_type_int
- * the obect value is chaned to new_value
+ * the obect value is changed to new_value
  *
  * @param obj the json_object instance
  * @param new_value the value to be set
@@ -718,21 +718,21 @@ JSON_EXPORT int32_t json_object_get_int(const struct json_object *obj);
  */
 JSON_EXPORT int json_object_set_int(struct json_object *obj,int new_value);
 
-/** Add the int value to the value of a json object
+/** Increment a json_type_int object by the given amount, which may be negative.
  *
- * The type of obj is checked to be a json type int and 0 is returned
- * if it is not without any further actions. If the type of obj is
- * json_type_int the int value is added to the object value.
+ * If the type of obj is not json_type_int then 0 is returned with no further
+ * action taken.
  * If the addition would result in a overflow, the object value
- * is set to INT32_MAX.
+ * is set to INT64_MAX.
  * If the addition would result in a underflow, the object value
- * is set to INT32_MIN.
+ * is set to INT64_MIN.
+ * Neither overflow nor underflow affect the return value.
  *
  * @param obj the json_object instance
  * @param val the value to add
- * @returns 1 if the addition succeded, 0 otherwise
+ * @returns 1 if the increment succeded, 0 otherwise
  */
-JSON_EXPORT int json_object_add_int(struct json_object *obj, int val);
+JSON_EXPORT int json_object_int_inc(struct json_object *obj, int64_t val);
 
 
 /** Get the int value of a json_object
@@ -763,22 +763,6 @@ JSON_EXPORT int64_t json_object_get_int64(const struct json_object *obj);
  */
 JSON_EXPORT int json_object_set_int64(struct json_object *obj,int64_t new_value);
 
-/** Add a int64_t value to the int64_t value of a json_object
- *
- * The type of obj is checked to be a json_type_int and 0 is returned
- * if it is not without any further actions. If the type of obj is
- * json_type_int the int64 value is added to the object value.
- * If the addition to the object would result in a overflow the
- * object value is set to INT64_MAX.
- * If the addition would result in a underflow, the
- * object value is set to INT64_MIN.
- *
- * @param obj the json_object instance
- * @param val the int64_vaule to add
- * @returns 1 if the addition succeeded, 0 otherwise
- */
-JSON_EXPORT int json_object_add_int64(struct json_object *obj, int64_t val);
-
 /* double type methods */
 
 /** Create a new empty json_object of type json_type_double

tests/test_int_add.c

@@ -6,33 +6,39 @@
 int main(int argc, char **argv)
 {
 	json_object *tmp = json_object_new_int(123);
-	json_object_add_int(tmp, 123);
+	json_object_int_inc(tmp, 123);
 	assert(json_object_get_int(tmp) == 246);
 	json_object_put(tmp);
 	printf("INT ADD PASSED\n");
 	tmp = json_object_new_int(INT32_MAX);
-	json_object_add_int(tmp, 100);
+	json_object_int_inc(tmp, 100);
 	assert(json_object_get_int(tmp) == INT32_MAX);
+	assert(json_object_get_int64(tmp) == (long)INT32_MAX + 100L);
 	json_object_put(tmp);
 	printf("INT ADD OVERFLOW PASSED\n");
 	tmp = json_object_new_int(INT32_MIN);
-	json_object_add_int(tmp, -100);
+	json_object_int_inc(tmp, -100);
 	assert(json_object_get_int(tmp) == INT32_MIN);
+	assert(json_object_get_int64(tmp) == (long)INT32_MIN - 100L);
 	json_object_put(tmp);
 	printf("INT ADD UNDERFLOW PASSED\n");
 	tmp = json_object_new_int64(321321321);
-	json_object_add_int(tmp, 321321321);
+	json_object_int_inc(tmp, 321321321);
 	assert(json_object_get_int(tmp) == 642642642);
 	json_object_put(tmp);
 	printf("INT64 ADD PASSED\n");
 	tmp = json_object_new_int64(INT64_MAX);
-	json_object_add_int64(tmp, 100);
+	json_object_int_inc(tmp, 100);
 	assert(json_object_get_int64(tmp) == INT64_MAX);
+	json_object_int_inc(tmp, -100);
+	assert(json_object_get_int64(tmp) != INT64_MAX);
 	json_object_put(tmp);
 	printf("INT64 ADD OVERFLOW PASSED\n");
 	tmp = json_object_new_int64(INT64_MIN);
-	json_object_add_int64(tmp, -100);
+	json_object_int_inc(tmp, -100);
 	assert(json_object_get_int64(tmp) == INT64_MIN);
+	json_object_int_inc(tmp, 100);
+	assert(json_object_get_int64(tmp) != INT64_MIN);
 	json_object_put(tmp);
 	printf("INT64 ADD UNDERFLOW PASSED\n");