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LibJS: Move PromiseCapability into its own cpp/h file

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This is not strictly connected to PromiseReaction in any way.
Preparation before doing some actual work on it :^)
This commit is contained in:
Linus Groh 2022-10-02 10:59:22 +01:00
parent 4986fa262c
commit c2326ec95a
25 changed files with 175 additions and 144 deletions
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65
Userland/Libraries/LibJS/Runtime/PromiseCapability.h Normal file
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/*
* Copyright (c) 2021-2022, Linus Groh <linusg@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Forward.h>
#include <LibJS/Forward.h>
#include <LibJS/Runtime/AbstractOperations.h>
namespace JS {
// 27.2.1.1 PromiseCapability Records, https://tc39.es/ecma262/#sec-promisecapability-records
struct PromiseCapability {
Object* promise { nullptr };
FunctionObject* resolve { nullptr };
FunctionObject* reject { nullptr };
};
// 27.2.1.1.1 IfAbruptRejectPromise ( value, capability ), https://tc39.es/ecma262/#sec-ifabruptrejectpromise
#define __TRY_OR_REJECT(vm, capability, expression, CALL_CHECK) \
({ \
auto _temporary_try_or_reject_result = (expression); \
/* 1. If value is an abrupt completion, then */ \
if (_temporary_try_or_reject_result.is_error()) { \
/* a. Perform ? Call(capability.[[Reject]], undefined, « value.[[Value]] »). */ \
CALL_CHECK(JS::call(vm, *capability.reject, js_undefined(), *_temporary_try_or_reject_result.release_error().value())); \
\
/* b. Return capability.[[Promise]]. */ \
return capability.promise; \
} \
\
/* 2. Else if value is a Completion Record, set value to value.[[Value]]. */ \
_temporary_try_or_reject_result.release_value(); \
})
#define TRY_OR_REJECT(vm, capability, expression) \
__TRY_OR_REJECT(vm, capability, expression, TRY)
#define TRY_OR_MUST_REJECT(vm, capability, expression) \
__TRY_OR_REJECT(vm, capability, expression, MUST)
// 27.2.1.1.1 IfAbruptRejectPromise ( value, capability ), https://tc39.es/ecma262/#sec-ifabruptrejectpromise
#define TRY_OR_REJECT_WITH_VALUE(vm, capability, expression) \
({ \
auto _temporary_try_or_reject_result = (expression); \
/* 1. If value is an abrupt completion, then */ \
if (_temporary_try_or_reject_result.is_error()) { \
/* a. Perform ? Call(capability.[[Reject]], undefined, « value.[[Value]] »). */ \
TRY(JS::call(vm, *capability.reject, js_undefined(), *_temporary_try_or_reject_result.release_error().value())); \
\
/* b. Return capability.[[Promise]]. */ \
return Value { capability.promise }; \
} \
\
/* 2. Else if value is a Completion Record, set value to value.[[Value]]. */ \
_temporary_try_or_reject_result.release_value(); \
})
// 27.2.1.5 NewPromiseCapability ( C ), https://tc39.es/ecma262/#sec-newpromisecapability
ThrowCompletionOr<PromiseCapability> new_promise_capability(VM& vm, Value constructor);
}