f71f404e0c
The environment settings object is effectively the context a piece of script is running under, for example, it contains the origin, responsible document, realm, global object and event loop for the current context. This effectively replaces ScriptExecutionContext, but it cannot be removed in this commit as EventTarget still depends on it. https://html.spec.whatwg.org/multipage/webappapis.html#environment-settings-object
66 lines
1.8 KiB
C++
66 lines
1.8 KiB
C++
/*
|
|
* Copyright (c) 2021, Linus Groh <linusg@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/Vector.h>
|
|
#include <LibJS/Runtime/Object.h>
|
|
|
|
namespace JS {
|
|
|
|
ThrowCompletionOr<Object*> promise_resolve(GlobalObject&, Object& constructor, Value);
|
|
|
|
class Promise : public Object {
|
|
JS_OBJECT(Promise, Object);
|
|
|
|
public:
|
|
enum class State {
|
|
Pending,
|
|
Fulfilled,
|
|
Rejected,
|
|
};
|
|
enum class RejectionOperation {
|
|
Reject,
|
|
Handle,
|
|
};
|
|
|
|
static Promise* create(GlobalObject&);
|
|
|
|
explicit Promise(Object& prototype);
|
|
virtual ~Promise() = default;
|
|
|
|
State state() const { return m_state; }
|
|
Value result() const { return m_result; }
|
|
|
|
struct ResolvingFunctions {
|
|
FunctionObject& resolve;
|
|
FunctionObject& reject;
|
|
};
|
|
ResolvingFunctions create_resolving_functions();
|
|
|
|
Value fulfill(Value value);
|
|
Value reject(Value reason);
|
|
Value perform_then(Value on_fulfilled, Value on_rejected, Optional<PromiseCapability> result_capability);
|
|
|
|
bool is_handled() const { return m_is_handled; }
|
|
|
|
protected:
|
|
virtual void visit_edges(Visitor&) override;
|
|
|
|
private:
|
|
bool is_settled() const { return m_state == State::Fulfilled || m_state == State::Rejected; }
|
|
|
|
void trigger_reactions() const;
|
|
|
|
// 27.2.6 Properties of Promise Instances, https://tc39.es/ecma262/#sec-properties-of-promise-instances
|
|
State m_state { State::Pending }; // [[PromiseState]]
|
|
Value m_result; // [[PromiseResult]]
|
|
Vector<PromiseReaction*> m_fulfill_reactions; // [[PromiseFulfillReactions]]
|
|
Vector<PromiseReaction*> m_reject_reactions; // [[PromiseRejectReactions]]
|
|
bool m_is_handled { false }; // [[PromiseIsHandled]]
|
|
};
|
|
|
|
}
|