48 lines
1.6 KiB
C++
48 lines
1.6 KiB
C++
/*
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* Copyright (c) 2021, Ali Mohammad Pur <mpfard@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <LibJS/Bytecode/Interpreter.h>
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#include <LibJS/Runtime/ECMAScriptFunctionObject.h>
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#include <LibJS/Runtime/Object.h>
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namespace JS {
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class GeneratorObject final : public Object {
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JS_OBJECT(GeneratorObject, Object);
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public:
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static ThrowCompletionOr<NonnullGCPtr<GeneratorObject>> create(Realm&, Value, ECMAScriptFunctionObject*, ExecutionContext, Bytecode::RegisterWindow);
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virtual ThrowCompletionOr<void> initialize(Realm&) override;
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virtual ~GeneratorObject() override = default;
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void visit_edges(Cell::Visitor&) override;
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ThrowCompletionOr<Value> resume(VM&, Value value, Optional<DeprecatedString> generator_brand);
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ThrowCompletionOr<Value> resume_abrupt(VM&, JS::Completion abrupt_completion, Optional<DeprecatedString> generator_brand);
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private:
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GeneratorObject(Realm&, Object& prototype, ExecutionContext);
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enum class GeneratorState {
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SuspendedStart,
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SuspendedYield,
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Executing,
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Completed,
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};
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ThrowCompletionOr<GeneratorState> validate(VM&, Optional<DeprecatedString> const& generator_brand);
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ThrowCompletionOr<Value> execute(VM&, JS::Completion const& completion);
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ExecutionContext m_execution_context;
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GCPtr<ECMAScriptFunctionObject> m_generating_function;
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Value m_previous_value;
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Optional<Bytecode::RegisterWindow> m_frame;
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GeneratorState m_generator_state { GeneratorState::SuspendedStart };
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Optional<DeprecatedString> m_generator_brand;
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};
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}
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