aabd82d508
This patch adds FunctionEnvironmentRecord as a subclass of the existing DeclarativeEnvironmentRecord. Things that are specific to function environment records move into there, simplifying the base. Most of the abstract operations related to function environment records are rewritten to match the spec exactly. I also had to implement GetThisEnvironment() and GetSuperConstructor() to keep tests working after the changes, so that's nice as well. :^)
64 lines
2.3 KiB
C++
64 lines
2.3 KiB
C++
/*
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* Copyright (c) 2020, Andreas Kling <kling@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/AST.h>
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#include <LibJS/Bytecode/Generator.h>
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#include <LibJS/Runtime/Function.h>
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namespace JS {
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class ScriptFunction final : public Function {
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JS_OBJECT(ScriptFunction, Function);
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public:
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static ScriptFunction* create(GlobalObject&, const FlyString& name, const Statement& body, Vector<FunctionNode::Parameter> parameters, i32 m_function_length, EnvironmentRecord* parent_scope, FunctionKind, bool is_strict, bool is_arrow_function = false);
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ScriptFunction(GlobalObject&, const FlyString& name, const Statement& body, Vector<FunctionNode::Parameter> parameters, i32 m_function_length, EnvironmentRecord* parent_scope, Object& prototype, FunctionKind, bool is_strict, bool is_arrow_function = false);
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virtual void initialize(GlobalObject&) override;
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virtual ~ScriptFunction();
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const Statement& body() const { return m_body; }
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const Vector<FunctionNode::Parameter>& parameters() const { return m_parameters; };
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virtual Value call() override;
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virtual Value construct(Function& new_target) override;
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virtual const FlyString& name() const override { return m_name; };
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void set_name(const FlyString& name) { m_name = name; };
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void set_is_class_constructor() { m_is_class_constructor = true; };
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auto& bytecode_executable() const { return m_bytecode_executable; }
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virtual EnvironmentRecord* environment() override { return m_parent_scope; }
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protected:
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virtual bool is_strict_mode() const final { return m_is_strict; }
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private:
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virtual FunctionEnvironmentRecord* create_environment_record() override;
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virtual void visit_edges(Visitor&) override;
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Value execute_function_body();
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JS_DECLARE_NATIVE_GETTER(length_getter);
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JS_DECLARE_NATIVE_GETTER(name_getter);
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FlyString m_name;
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NonnullRefPtr<Statement> m_body;
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const Vector<FunctionNode::Parameter> m_parameters;
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Optional<Bytecode::Executable> m_bytecode_executable;
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EnvironmentRecord* m_parent_scope { nullptr };
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i32 m_function_length { 0 };
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FunctionKind m_kind { FunctionKind::Regular };
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bool m_is_strict { false };
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bool m_is_arrow_function { false };
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bool m_is_class_constructor { false };
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};
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}
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