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/* Copyright JS Foundation and other contributors, http://js.foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "ecma-alloc.h"
#include "ecma-globals.h"
#include "ecma-helpers.h"
/** \addtogroup ecma ECMA
* @{
*
* \addtogroup ecmahelpers Helpers for operations with ECMA data types
* @{
*/
/**
* Create internal property with specified identifier and store native handle/pointer of the object.
*
* Note:
* property identifier should be one of the following:
* - LIT_INTERNAL_MAGIC_STRING_NATIVE_HANDLE
* - LIT_INTERNAL_MAGIC_STRING_NATIVE_POINTER
*
* @return true - if property was just created with specified value,
* false - otherwise, if property existed before the call, it's value was updated
*/
static bool
ecma_create_native_property (ecma_object_t *obj_p, /**< object to create property in */
lit_magic_string_id_t id, /**< identifier of internal
* property to create */
void *data_p, /**< native pointer data */
void *info_p) /**< native pointer's info */
{
JERRY_ASSERT (id == LIT_INTERNAL_MAGIC_STRING_NATIVE_HANDLE
|| id == LIT_INTERNAL_MAGIC_STRING_NATIVE_POINTER);
ecma_string_t *name_p = ecma_get_magic_string (id);
ecma_property_t *property_p = ecma_find_named_property (obj_p, name_p);
bool is_new = (property_p == NULL);
ecma_native_pointer_t *native_pointer_p;
if (is_new)
{
ecma_property_value_t *value_p;
value_p = ecma_create_named_data_property (obj_p, name_p, ECMA_PROPERTY_FLAG_WRITABLE, NULL);
native_pointer_p = jmem_heap_alloc_block (sizeof (ecma_native_pointer_t));
ECMA_SET_INTERNAL_VALUE_POINTER (value_p->value, native_pointer_p);
}
else
{
ecma_property_value_t *value_p = ECMA_PROPERTY_VALUE_PTR (property_p);
native_pointer_p = ECMA_GET_INTERNAL_VALUE_POINTER (ecma_native_pointer_t, value_p->value);
}
native_pointer_p->data_p = data_p;
native_pointer_p->u.info_p = info_p;
return is_new;
} /* ecma_create_native_property */
/**
* Create a native handle property to store the native handle and its free callback.
*
* @return true - if property was just created with specified value,
* false - otherwise, if property existed before the call, it's value was updated
*/
bool
ecma_create_native_handle_property (ecma_object_t *obj_p, /**< object to create property in */
void *handle_p, /**< native handle */
void *free_cb) /**< native handle's free callback*/
{
return ecma_create_native_property (obj_p,
LIT_INTERNAL_MAGIC_STRING_NATIVE_HANDLE,
handle_p,
free_cb);
} /* ecma_create_native_handle_property */
/**
* Create a native pointer property to store the native pointer and its type info.
*
* @return true - if property was just created with specified value,
* false - otherwise, if property existed before the call, it's value was updated
*/
bool
ecma_create_native_pointer_property (ecma_object_t *obj_p, /**< object to create property in */
void *native_p, /**< native pointer */
void *info_p) /**< native pointer's type info */
{
return ecma_create_native_property (obj_p,
LIT_INTERNAL_MAGIC_STRING_NATIVE_POINTER,
native_p,
info_p);
} /* ecma_create_native_pointer_property */
/**
* Get value of native package stored in the object's property with specified identifier
*
* Note:
* property identifier should be one of the following:
* - LIT_INTERNAL_MAGIC_STRING_NATIVE_HANDLE
* - LIT_INTERNAL_MAGIC_STRING_NATIVE_POINTER
*
* @return native pointer data if property exists
* NULL otherwise
*/
ecma_native_pointer_t *
ecma_get_native_pointer_value (ecma_object_t *obj_p, /**< object to get property value from */
lit_magic_string_id_t id) /**< identifier of internal property
* to get value from */
{
JERRY_ASSERT (id == LIT_INTERNAL_MAGIC_STRING_NATIVE_HANDLE
|| id == LIT_INTERNAL_MAGIC_STRING_NATIVE_POINTER);
ecma_property_t *property_p = ecma_find_named_property (obj_p, ecma_get_magic_string (id));
if (property_p == NULL)
{
return NULL;
}
ecma_property_value_t *value_p = ECMA_PROPERTY_VALUE_PTR (property_p);
return ECMA_GET_INTERNAL_VALUE_POINTER (ecma_native_pointer_t, value_p->value);
} /* ecma_get_native_pointer_value */
/**
* Free the allocated native package struct.
*/
void
ecma_free_native_pointer (ecma_property_t *prop_p) /**< native property */
{
ecma_property_value_t *value_p = ECMA_PROPERTY_VALUE_PTR (prop_p);
ecma_native_pointer_t *native_pointer_p = ECMA_GET_INTERNAL_VALUE_POINTER (ecma_native_pointer_t,
value_p->value);
jmem_heap_free_block (native_pointer_p, sizeof (ecma_native_pointer_t));
} /* ecma_free_native_pointer */
/**
* @}
* @}
*/
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