mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2026-04-18 18:00:31 +00:00
7281091fdb
Remove CodeGenerationError and make all bytecode generation functions return their results directly instead of wrapping them in CodeGenerationErrorOr. For the few remaining sites where codegen encounters an unimplemented or unexpected AST node, we now use a new emit_todo() helper that emits a NewTypeError + Throw sequence at compile time (preserving the runtime behavior) and then switches to a dead basic block so subsequent codegen for the same function can continue without issue. This allows us to remove error handling from all callers of the bytecode compiler, simplifying the code significantly.
68 lines
2.9 KiB
C++
68 lines
2.9 KiB
C++
/*
|
|
* Copyright (c) 2020-2025, Andreas Kling <andreas@ladybird.org>
|
|
* Copyright (c) 2021-2022, Linus Groh <linusg@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/Optional.h>
|
|
#include <AK/StringView.h>
|
|
#include <LibJS/Bytecode/Builtins.h>
|
|
#include <LibJS/LocalVariable.h>
|
|
#include <LibJS/Runtime/Object.h>
|
|
#include <LibJS/Runtime/PrivateEnvironment.h>
|
|
#include <LibJS/Runtime/PropertyKey.h>
|
|
|
|
namespace JS {
|
|
|
|
class FunctionObject : public Object {
|
|
JS_OBJECT(FunctionObject, Object);
|
|
|
|
public:
|
|
virtual ~FunctionObject() = default;
|
|
|
|
// Table 5: Additional Essential Internal Methods of Function Objects, https://tc39.es/ecma262/#table-additional-essential-internal-methods-of-function-objects
|
|
|
|
virtual void get_stack_frame_size([[maybe_unused]] size_t& registers_and_locals_count, [[maybe_unused]] size_t& constants_count, [[maybe_unused]] size_t& argument_count) { }
|
|
virtual ThrowCompletionOr<Value> internal_call(ExecutionContext&, Value this_argument) = 0;
|
|
virtual ThrowCompletionOr<GC::Ref<Object>> internal_construct(ExecutionContext&, [[maybe_unused]] FunctionObject& new_target) { VERIFY_NOT_REACHED(); }
|
|
|
|
void set_function_name(Variant<PropertyKey, PrivateName> const& name_arg, Optional<StringView> const& prefix = {});
|
|
void set_function_length(double length);
|
|
|
|
virtual bool is_strict_mode() const { return false; }
|
|
|
|
virtual bool has_constructor() const { return false; }
|
|
|
|
// [[Realm]]
|
|
virtual Realm* realm() const { return nullptr; }
|
|
|
|
virtual Vector<LocalVariable> const& local_variables_names() const { VERIFY_NOT_REACHED(); }
|
|
|
|
virtual Utf16String name_for_call_stack() const = 0;
|
|
|
|
bool is_array_prototype_next_builtin() const { return m_builtin.has_value() && *m_builtin == Bytecode::Builtin::ArrayIteratorPrototypeNext; }
|
|
bool is_map_prototype_next_builtin() const { return m_builtin.has_value() && *m_builtin == Bytecode::Builtin::MapIteratorPrototypeNext; }
|
|
bool is_set_prototype_next_builtin() const { return m_builtin.has_value() && *m_builtin == Bytecode::Builtin::SetIteratorPrototypeNext; }
|
|
bool is_string_prototype_next_builtin() const { return m_builtin.has_value() && *m_builtin == Bytecode::Builtin::StringIteratorPrototypeNext; }
|
|
|
|
Optional<Bytecode::Builtin> builtin() const { return m_builtin; }
|
|
|
|
protected:
|
|
explicit FunctionObject(Realm&, Object* prototype, MayInterfereWithIndexedPropertyAccess = MayInterfereWithIndexedPropertyAccess::No);
|
|
explicit FunctionObject(Object& prototype, MayInterfereWithIndexedPropertyAccess = MayInterfereWithIndexedPropertyAccess::No);
|
|
|
|
[[nodiscard]] GC::Ref<PrimitiveString> make_function_name(Variant<PropertyKey, PrivateName> const&, Optional<StringView> const& prefix);
|
|
|
|
Optional<Bytecode::Builtin> m_builtin;
|
|
|
|
private:
|
|
virtual bool is_function() const override { return true; }
|
|
};
|
|
|
|
template<>
|
|
inline bool Object::fast_is<FunctionObject>() const { return is_function(); }
|
|
|
|
}
|