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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.
*/
#ifndef ECMA_ASYNC_GENERATOR_OBJECT_H
#define ECMA_ASYNC_GENERATOR_OBJECT_H
#include "ecma-globals.h"
#include "vm-defines.h"
/** \addtogroup ecma ECMA
* @{
*
* \addtogroup ecmaasyncgeneratorobject ECMA AsyncGenerator object related routines
* @{
*/
/**
* AsyncGenerator command types.
*/
typedef enum
{
ECMA_ASYNC_GENERATOR_DO_NEXT, /**< async generator next operation */
ECMA_ASYNC_GENERATOR_DO_THROW, /**< async generator throw operation */
ECMA_ASYNC_GENERATOR_DO_RETURN, /**< async generator return operation */
} ecma_async_generator_operation_type_t;
/**
* Get the state of an async yield iterator.
*/
#define ECMA_AWAIT_GET_STATE(async_generator_object_p) \
((async_generator_object_p)->extended_object.u.cls.u2.executable_obj_flags >> ECMA_AWAIT_STATE_SHIFT)
/**
* Set the state of an async yield iterator.
*/
#define ECMA_AWAIT_SET_STATE(async_generator_object_p, to) \
do \
{ \
uint16_t extra_info = (async_generator_object_p)->extended_object.u.cls.u2.executable_obj_flags; \
extra_info &= ((1 << ECMA_AWAIT_STATE_SHIFT) - 1); \
extra_info |= (ECMA_AWAIT_##to) << ECMA_AWAIT_STATE_SHIFT; \
(async_generator_object_p)->extended_object.u.cls.u2.executable_obj_flags = extra_info; \
} while (false)
/**
* Mask for clearing all ASYNC_AWAIT status bits
*/
#define ECMA_AWAIT_CLEAR_MASK (((1 << ECMA_AWAIT_STATE_SHIFT) - 1) - ECMA_EXECUTABLE_OBJECT_DO_AWAIT_OR_YIELD)
/**
* Helper macro for ECMA_AWAIT_CHANGE_STATE.
*/
#define ECMA_AWAIT_CS_HELPER(from, to) (((ECMA_AWAIT_##from) ^ (ECMA_AWAIT_##to)) << ECMA_AWAIT_STATE_SHIFT)
/**
* Change the state of an async yield iterator.
*/
#define ECMA_AWAIT_CHANGE_STATE(async_generator_object_p, from, to) \
((async_generator_object_p)->extended_object.u.cls.u2.executable_obj_flags ^= ECMA_AWAIT_CS_HELPER (from, to))
ecma_value_t ecma_async_generator_enqueue (vm_executable_object_t *async_generator_object_p,
ecma_async_generator_operation_type_t operation,
ecma_value_t value);
ecma_value_t ecma_async_generator_run (vm_executable_object_t *async_generator_object_p);
void ecma_async_generator_finalize (vm_executable_object_t *async_generator_object_p, ecma_value_t value);
ecma_value_t ecma_await_continue (vm_executable_object_t *async_generator_object_p, ecma_value_t value);
/**
* @}
* @}
*/
#endif /* !ECMA_ASYNC_GENERATOR_OBJECT_H */
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