Update Doxygen config file and fix Doxygen warnings (#2324)

A lot of warnings remained hibben because 'EXTRACT_ALL' was previously set to YES.

JerryScript-DCO-1.0-Signed-off-by: László Langó llango.u-szeged@partner.samsung.com

jerry-core/ecma/operations/ecma-conversion.c

@@ -305,7 +305,8 @@ ecma_op_to_number (ecma_value_t value) /**< ecma value */
  *         Returned value must be freed with ecma_free_value
  */
 ecma_value_t
-ecma_get_number (ecma_value_t value, ecma_number_t *number_p)
+ecma_get_number (ecma_value_t value, /**< ecma value*/
+                 ecma_number_t *number_p) /**< [out] ecma number */
 {
   if (ecma_is_value_integer_number (value))
   {

jerry-core/ecma/operations/ecma-exceptions.c

@@ -34,12 +34,19 @@
  * \addtogroup exceptions Exceptions
  * @{
  */
+
+/**
+ * Map error type to error prototype.
+ */
 typedef struct
 {
-  ecma_standard_error_t error_type;
-  ecma_builtin_id_t error_prototype_id;
+  ecma_standard_error_t error_type; /**< Native error type */
+  ecma_builtin_id_t error_prototype_id; /**< ID of the error prototype */
 } ecma_error_mapping_t;
 
+/**
+ * List of error type mappings
+ */
 const ecma_error_mapping_t ecma_error_mappings[] =
 {
 #define ERROR_ELEMENT(TYPE, ID) { TYPE, ID }

jerry-core/ecma/operations/ecma-function-object.c

@@ -41,7 +41,7 @@
  *         false - otherwise
  */
 inline bool JERRY_ATTR_ALWAYS_INLINE
-ecma_is_normal_or_arrow_function (ecma_object_type_t type)
+ecma_is_normal_or_arrow_function (ecma_object_type_t type) /**< object type */
 {
 #ifndef CONFIG_DISABLE_ES2015_ARROW_FUNCTION
   return (type == ECMA_OBJECT_TYPE_FUNCTION || type == ECMA_OBJECT_TYPE_ARROW_FUNCTION);

jerry-core/ecma/operations/ecma-jobqueue.c

@@ -46,7 +46,7 @@ typedef struct
 {
   ecma_value_t promise; /**< promise to be resolved */
   ecma_value_t thenable; /**< thenbale object */
-  ecma_value_t then; /** 'then' function */
+  ecma_value_t then; /**< 'then' function */
 } ecma_job_promise_resolve_thenable_t;
 
 /**

jerry-core/ecma/operations/ecma-objects.c

@@ -1281,6 +1281,9 @@ ecma_op_object_get_own_property_descriptor (ecma_object_t *object_p, /**< the ob
  *
  * See also:
  *          ECMA-262 v5, 8.6.2; ECMA-262 v5, Table 9
+ *
+ * @return ecma value containing a boolean value or an error
+ *         Returned value must be freed with ecma_free_value
  */
 ecma_value_t
 ecma_op_object_has_instance (ecma_object_t *obj_p, /**< the object */
@@ -1729,6 +1732,9 @@ ecma_op_object_get_property_names (ecma_object_t *obj_p, /**< object */
 
 /**
  * The function is used in the assert of ecma_object_get_class_name
+ *
+ * @return true  - if class name is an object
+ *         false - otherwise
  */
 inline static bool
 ecma_object_check_class_name_is_object (ecma_object_t *obj_p) /**< object */

jerry-core/ecma/operations/ecma-regexp-object.c

@@ -52,6 +52,10 @@
  *   [n+1] n/2 th group end
  */
 #define RE_GLOBAL_START_IDX 0
+
+/**
+ * @copydoc RE_GLOBAL_START_IDX
+ */
 #define RE_GLOBAL_END_IDX   1
 
 /**