38157a6093
At a later point this will indicate whether some FunctionObject "has a [[Construct]] internal method" (separate from the current FunctionObject call() / construct()), to help with a more spec-compliant implementation of [[Call]] and [[Construct]]. This means that it is no longer relevant to just NativeFunction.
106 lines
4.4 KiB
C++
106 lines
4.4 KiB
C++
/*
|
|
* Copyright (c) 2020-2021, Andreas Kling <kling@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <LibJS/AST.h>
|
|
#include <LibJS/Bytecode/Generator.h>
|
|
#include <LibJS/Runtime/FunctionObject.h>
|
|
|
|
namespace JS {
|
|
|
|
// 10.2 ECMAScript Function Objects, https://tc39.es/ecma262/#sec-ecmascript-function-objects
|
|
class ECMAScriptFunctionObject final : public FunctionObject {
|
|
JS_OBJECT(ECMAScriptFunctionObject, FunctionObject);
|
|
|
|
public:
|
|
enum class ConstructorKind : u8 {
|
|
Base,
|
|
Derived,
|
|
};
|
|
|
|
enum class ThisMode : u8 {
|
|
Lexical,
|
|
Strict,
|
|
Global,
|
|
};
|
|
|
|
static ECMAScriptFunctionObject* create(GlobalObject&, FlyString name, Statement const& ecmascript_code, Vector<FunctionNode::Parameter> parameters, i32 m_function_length, Environment* parent_scope, FunctionKind, bool is_strict, bool is_arrow_function = false);
|
|
|
|
ECMAScriptFunctionObject(FlyString name, Statement const& ecmascript_code, Vector<FunctionNode::Parameter> parameters, i32 m_function_length, Environment* parent_scope, Object& prototype, FunctionKind, bool is_strict, bool is_arrow_function = false);
|
|
virtual void initialize(GlobalObject&) override;
|
|
virtual ~ECMAScriptFunctionObject();
|
|
|
|
Statement const& ecmascript_code() const { return m_ecmascript_code; }
|
|
Vector<FunctionNode::Parameter> const& formal_parameters() const { return m_formal_parameters; };
|
|
|
|
virtual Value call() override;
|
|
virtual Value construct(FunctionObject& new_target) override;
|
|
|
|
virtual const FlyString& name() const override { return m_name; };
|
|
void set_name(const FlyString& name);
|
|
|
|
void set_is_class_constructor() { m_is_class_constructor = true; };
|
|
|
|
auto& bytecode_executable() const { return m_bytecode_executable; }
|
|
|
|
Environment* environment() { return m_environment; }
|
|
virtual Realm* realm() const override { return m_realm; }
|
|
|
|
ConstructorKind constructor_kind() const { return m_constructor_kind; };
|
|
void set_constructor_kind(ConstructorKind constructor_kind) { m_constructor_kind = constructor_kind; }
|
|
|
|
ThisMode this_mode() const { return m_this_mode; }
|
|
|
|
Object* home_object() const { return m_home_object; }
|
|
void set_home_object(Object* home_object) { m_home_object = home_object; }
|
|
|
|
struct InstanceField {
|
|
StringOrSymbol name;
|
|
ECMAScriptFunctionObject* initializer { nullptr };
|
|
|
|
void define_field(VM& vm, Object& receiver) const;
|
|
};
|
|
|
|
Vector<InstanceField> const& fields() const { return m_fields; }
|
|
void add_field(StringOrSymbol property_key, ECMAScriptFunctionObject* initializer) { m_fields.empend(property_key, initializer); }
|
|
|
|
// This is for IsSimpleParameterList (static semantics)
|
|
bool has_simple_parameter_list() const { return m_has_simple_parameter_list; }
|
|
|
|
virtual bool has_constructor() const override { return true; }
|
|
|
|
protected:
|
|
virtual bool is_strict_mode() const final { return m_strict; }
|
|
|
|
private:
|
|
virtual bool is_ecmascript_function_object() const override { return true; }
|
|
virtual FunctionEnvironment* create_environment(FunctionObject&) override;
|
|
virtual void visit_edges(Visitor&) override;
|
|
|
|
Value execute_function_body();
|
|
|
|
// Internal Slots of ECMAScript Function Objects, https://tc39.es/ecma262/#table-internal-slots-of-ecmascript-function-objects
|
|
Environment* m_environment { nullptr }; // [[Environment]]
|
|
Vector<FunctionNode::Parameter> const m_formal_parameters; // [[FormalParameters]]
|
|
NonnullRefPtr<Statement> m_ecmascript_code; // [[ECMAScriptCode]]
|
|
ConstructorKind m_constructor_kind { ConstructorKind::Base }; // [[ConstructorKind]]
|
|
Realm* m_realm { nullptr }; // [[Realm]]
|
|
ThisMode m_this_mode { ThisMode::Global }; // [[ThisMode]]
|
|
bool m_strict { false }; // [[Strict]]
|
|
Object* m_home_object { nullptr }; // [[HomeObject]]
|
|
Vector<InstanceField> m_fields; // [[Fields]]
|
|
bool m_is_class_constructor { false }; // [[IsClassConstructor]]
|
|
|
|
FlyString m_name;
|
|
Optional<Bytecode::Executable> m_bytecode_executable;
|
|
i32 m_function_length { 0 };
|
|
FunctionKind m_kind { FunctionKind::Regular };
|
|
bool m_is_arrow_function { false };
|
|
bool m_has_simple_parameter_list { false };
|
|
};
|
|
|
|
}
|