mirror of
https://github.com/LadybirdBrowser/ladybird
synced 2026-04-26 01:35:08 +02:00
658ba1d023
After successful bytecode compilation, the m_functions_to_initialize and m_var_names_to_initialize_binding vectors are no longer needed as they are only consumed by emit_function_declaration_instantiation() during code generation. Add clear_compile_inputs() to release these vectors post-compile, and call it from both ECMAScriptFunctionObject::get_stack_frame_size() and NativeJavaScriptBackedFunction::bytecode_executable() after their respective lazy compilation succeeds. Also add a pre-compile assertion in Generator::generate_from_function() to verify we never try to compile the same function data twice, and a VERIFY in ECMAScriptFunctionObject::ecmascript_code() to guard against null dereference.
108 lines
3.2 KiB
C++
108 lines
3.2 KiB
C++
/*
|
|
* Copyright (c) 2025, Andreas Kling <andreas@ladybird.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/RefCounted.h>
|
|
#include <LibJS/AST.h>
|
|
#include <LibJS/Forward.h>
|
|
#include <LibJS/Runtime/FunctionKind.h>
|
|
|
|
namespace JS {
|
|
|
|
enum class ThisMode : u8 {
|
|
Lexical,
|
|
Strict,
|
|
Global,
|
|
};
|
|
|
|
enum class ConstructorKind : u8 {
|
|
Base,
|
|
Derived,
|
|
};
|
|
|
|
class SharedFunctionInstanceData final : public GC::Cell {
|
|
GC_CELL(SharedFunctionInstanceData, GC::Cell);
|
|
GC_DECLARE_ALLOCATOR(SharedFunctionInstanceData);
|
|
|
|
public:
|
|
virtual ~SharedFunctionInstanceData() override;
|
|
|
|
SharedFunctionInstanceData(
|
|
VM& vm,
|
|
FunctionKind,
|
|
Utf16FlyString name,
|
|
i32 function_length,
|
|
NonnullRefPtr<FunctionParameters const>,
|
|
NonnullRefPtr<Statement const> ecmascript_code,
|
|
Utf16View source_text,
|
|
bool strict,
|
|
bool is_arrow_function,
|
|
FunctionParsingInsights const&,
|
|
Vector<LocalVariable> local_variables_names);
|
|
|
|
mutable GC::Ptr<Bytecode::Executable> m_executable;
|
|
|
|
RefPtr<FunctionParameters const> m_formal_parameters; // [[FormalParameters]]
|
|
RefPtr<Statement const> m_ecmascript_code; // [[ECMAScriptCode]]
|
|
|
|
Utf16FlyString m_name;
|
|
|
|
// NB: m_source_text_owner is used if the source text needs to be owned by the function data.
|
|
// Otherwise, m_source_text is a view into the underlying JS::SourceCode we parsed the AST from.
|
|
Utf16String m_source_text_owner;
|
|
Utf16View m_source_text; // [[SourceText]]
|
|
|
|
Vector<LocalVariable> m_local_variables_names;
|
|
|
|
i32 m_function_length { 0 };
|
|
|
|
ThisMode m_this_mode : 2 { ThisMode::Global }; // [[ThisMode]]
|
|
FunctionKind m_kind : 3 { FunctionKind::Normal };
|
|
|
|
bool m_strict { false };
|
|
bool m_might_need_arguments_object { true };
|
|
bool m_contains_direct_call_to_eval { true };
|
|
bool m_is_arrow_function { false };
|
|
bool m_has_simple_parameter_list { false };
|
|
bool m_is_module_wrapper { false };
|
|
|
|
struct VariableNameToInitialize {
|
|
Identifier const& identifier;
|
|
bool parameter_binding { false };
|
|
bool function_name { false };
|
|
};
|
|
|
|
bool m_has_parameter_expressions { false };
|
|
bool m_has_duplicates { false };
|
|
enum class ParameterIsLocal {
|
|
No,
|
|
Yes,
|
|
};
|
|
HashMap<Utf16FlyString, ParameterIsLocal> m_parameter_names;
|
|
Vector<FunctionDeclaration const&> m_functions_to_initialize;
|
|
bool m_arguments_object_needed { false };
|
|
bool m_function_environment_needed { false };
|
|
bool m_uses_this { false };
|
|
Vector<VariableNameToInitialize> m_var_names_to_initialize_binding;
|
|
Vector<Utf16FlyString> m_function_names_to_initialize_binding;
|
|
|
|
size_t m_function_environment_bindings_count { 0 };
|
|
size_t m_var_environment_bindings_count { 0 };
|
|
size_t m_lex_environment_bindings_count { 0 };
|
|
|
|
Variant<PropertyKey, PrivateName, Empty> m_class_field_initializer_name; // [[ClassFieldInitializerName]]
|
|
ConstructorKind m_constructor_kind : 1 { ConstructorKind::Base }; // [[ConstructorKind]]
|
|
bool m_is_class_constructor : 1 { false }; // [[IsClassConstructor]]
|
|
|
|
void clear_compile_inputs();
|
|
|
|
private:
|
|
virtual void visit_edges(Visitor&) override;
|
|
};
|
|
|
|
}
|