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https://github.com/jerryscript-project/jerryscript.git
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f88489beef
Missing features: - caching next() method (this also true for normal generators) - automatic sync to async generator conversion JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
119 lines
4.3 KiB
C
119 lines
4.3 KiB
C
/* Copyright JS Foundation and other contributors, http://js.foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ECMA_ASYNC_GENERATOR_OBJECT_H
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#define ECMA_ASYNC_GENERATOR_OBJECT_H
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#include "ecma-globals.h"
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#include "vm-defines.h"
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#if ENABLED (JERRY_ESNEXT)
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/** \addtogroup ecma ECMA
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* @{
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*
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* \addtogroup ecmaasyncgeneratorobject ECMA AsyncGenerator object related routines
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* @{
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*/
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/**
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* AsyncGenerator command types.
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*/
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typedef enum
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{
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ECMA_ASYNC_GENERATOR_DO_NEXT, /**< async generator next operation */
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ECMA_ASYNC_GENERATOR_DO_THROW, /**< async generator throw operation */
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ECMA_ASYNC_GENERATOR_DO_RETURN, /**< async generator return operation */
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} ecma_async_generator_operation_type_t;
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/**
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* AsyncGenerator yield iterator states.
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*/
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typedef enum
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{
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ECMA_ASYNC_YIELD_ITERATOR_AWAIT_NEXT, /**< wait for an iterator result object */
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ECMA_ASYNC_YIELD_ITERATOR_AWAIT_NEXT_RETURN, /**< wait for an iterator result object after a return operation */
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ECMA_ASYNC_YIELD_ITERATOR_AWAIT_RETURN, /**< wait for the argument passed to return operation */
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ECMA_ASYNC_YIELD_ITERATOR_AWAIT_NEXT_VALUE, /**< wait for the value property of an iterator result object */
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ECMA_ASYNC_YIELD_ITERATOR_AWAIT_OPERATION, /**< wait for the generator operation (next/throw/return) */
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ECMA_ASYNC_YIELD_ITERATOR_AWAIT_CLOSE, /**< wait for the result of iterator close operation */
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} ecma_async_yield_iterator_states_t;
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/**
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* Get the state of an async yield iterator.
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*/
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#define ECMA_ASYNC_YIELD_ITERATOR_GET_STATE(async_generator_object_p) \
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((async_generator_object_p)->extended_object.u.class_prop.extra_info >> ECMA_ASYNC_YIELD_ITERATOR_STATE_SHIFT)
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/**
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* Set the state of an async yield iterator.
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*/
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#define ECMA_ASYNC_YIELD_ITERATOR_SET_STATE(async_generator_object_p, to) \
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do \
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{ \
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uint16_t extra_info = (async_generator_object_p)->extended_object.u.class_prop.extra_info; \
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extra_info &= ((1 << ECMA_ASYNC_YIELD_ITERATOR_STATE_SHIFT) - 1); \
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extra_info |= (ECMA_ASYNC_YIELD_ITERATOR_AWAIT_ ## to) << ECMA_ASYNC_YIELD_ITERATOR_STATE_SHIFT; \
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(async_generator_object_p)->extended_object.u.class_prop.extra_info = extra_info; \
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} \
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while (false)
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/**
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* Helper value for ECMA_ASYNC_YIELD_ITERATOR_END.
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*/
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#define ECMA_ASYNC_YIELD_ITERATOR_END_MASK \
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(((1 << ECMA_ASYNC_YIELD_ITERATOR_STATE_SHIFT) - 1) - ECMA_GENERATOR_ITERATE_AND_YIELD)
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/**
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* Return from yield iterator.
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*/
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#define ECMA_ASYNC_YIELD_ITERATOR_END(async_generator_object_p) \
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((async_generator_object_p)->extended_object.u.class_prop.extra_info &= ECMA_ASYNC_YIELD_ITERATOR_END_MASK)
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/**
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* Helper macro for ECMA_ASYNC_YIELD_ITERATOR_CHANGE_STATE.
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*/
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#define ECMA_ASYNC_YIELD_ITERATOR_CS1(from, to) \
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((ECMA_ASYNC_YIELD_ITERATOR_AWAIT_ ## from) ^ (ECMA_ASYNC_YIELD_ITERATOR_AWAIT_ ## to))
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/**
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* Helper macro for ECMA_ASYNC_YIELD_ITERATOR_CHANGE_STATE.
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*/
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#define ECMA_ASYNC_YIELD_ITERATOR_CS2(from, to) \
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(ECMA_ASYNC_YIELD_ITERATOR_CS1(from, to) << ECMA_ASYNC_YIELD_ITERATOR_STATE_SHIFT)
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/**
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* Change the state of an async yield iterator.
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*/
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#define ECMA_ASYNC_YIELD_ITERATOR_CHANGE_STATE(async_generator_object_p, from, to) \
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((async_generator_object_p)->extended_object.u.class_prop.extra_info ^= ECMA_ASYNC_YIELD_ITERATOR_CS2 (from, to))
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ecma_value_t ecma_async_generator_enqueue (vm_executable_object_t *async_generator_object_p,
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ecma_async_generator_operation_type_t operation, ecma_value_t value);
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void ecma_async_generator_run (vm_executable_object_t *async_generator_object_p);
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void ecma_async_generator_finalize (vm_executable_object_t *async_generator_object_p, ecma_value_t value);
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ecma_value_t ecma_async_yield_continue_await (vm_executable_object_t *async_generator_object_p, ecma_value_t value);
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#endif /* ENABLED (JERRY_ESNEXT) */
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/**
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* @}
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* @}
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*/
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#endif /* !ECMA_ASYNC_GENERATOR_OBJECT_H */
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