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LibJS: Rename VM::current_scope() => current_environment_record()

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And rename some related functions that wrapped this as well.
This commit is contained in:
Andreas Kling 2021-06-21 23:47:44 +02:00
parent d407f247b7
commit 08510a0c80
8 changed files with 28 additions and 27 deletions
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8
Userland/Libraries/LibJS/AST.cpp
View file

@ -100,7 +100,7 @@ Value FunctionDeclaration::execute(Interpreter& interpreter, GlobalObject&) cons
Value FunctionExpression::execute(Interpreter& interpreter, GlobalObject& global_object) const
{
InterpreterNodeScope node_scope { interpreter, *this };
return ScriptFunction::create(global_object, name(), body(), parameters(), function_length(), interpreter.current_scope(), kind(), is_strict_mode() || interpreter.vm().in_strict_mode(), is_arrow_function());
return ScriptFunction::create(global_object, name(), body(), parameters(), function_length(), interpreter.current_environment_record(), kind(), is_strict_mode() || interpreter.vm().in_strict_mode(), is_arrow_function());
}
Value ExpressionStatement::execute(Interpreter& interpreter, GlobalObject& global_object) const
@ -131,7 +131,7 @@ CallExpression::ThisAndCallee CallExpression::compute_this_and_callee(Interprete
Object* this_value = nullptr;
if (is<SuperExpression>(member_expression.object())) {
auto super_base = interpreter.current_environment()->get_super_base();
auto super_base = interpreter.current_declarative_environment_record()->get_super_base();
if (super_base.is_nullish()) {
vm.throw_exception<TypeError>(global_object, ErrorType::ObjectPrototypeNullOrUndefinedOnSuperPropertyAccess, super_base.to_string_without_side_effects());
return {};
@ -229,7 +229,7 @@ Value CallExpression::execute(Interpreter& interpreter, GlobalObject& global_obj
// FIXME: This is merely a band-aid to make super() inside catch {} work (which constructs
// a new DeclarativeEnvironmentRecord without current function). Implement GetSuperConstructor()
// and subsequently GetThisEnvironment() instead.
auto* function_environment = interpreter.current_environment();
auto* function_environment = interpreter.current_declarative_environment_record();
if (!function_environment->current_function())
function_environment = static_cast<DeclarativeEnvironmentRecord*>(function_environment->outer_environment());
@ -853,7 +853,7 @@ Value ClassDeclaration::execute(Interpreter& interpreter, GlobalObject& global_o
if (interpreter.exception())
return {};
interpreter.current_scope()->put_into_environment_record(m_class_expression->name(), { class_constructor, DeclarationKind::Let });
interpreter.current_environment_record()->put_into_environment_record(m_class_expression->name(), { class_constructor, DeclarationKind::Let });
return {};
}

4
Userland/Libraries/LibJS/Bytecode/Op.cpp
View file

@ -312,7 +312,7 @@ void Call::execute_impl(Bytecode::Interpreter& interpreter) const
void NewFunction::execute_impl(Bytecode::Interpreter& interpreter) const
{
auto& vm = interpreter.vm();
interpreter.accumulator() = ScriptFunction::create(interpreter.global_object(), m_function_node.name(), m_function_node.body(), m_function_node.parameters(), m_function_node.function_length(), vm.current_scope(), m_function_node.kind(), m_function_node.is_strict_mode(), m_function_node.is_arrow_function());
interpreter.accumulator() = ScriptFunction::create(interpreter.global_object(), m_function_node.name(), m_function_node.body(), m_function_node.parameters(), m_function_node.function_length(), vm.current_environment_record(), m_function_node.kind(), m_function_node.is_strict_mode(), m_function_node.is_arrow_function());
}
void Return::execute_impl(Bytecode::Interpreter& interpreter) const
@ -386,7 +386,7 @@ void PushDeclarativeEnvironmentRecord::execute_impl(Bytecode::Interpreter& inter
HashMap<FlyString, Variable> resolved_variables;
for (auto& it : m_variables)
resolved_variables.set(interpreter.current_executable().get_string(it.key), it.value);
auto* environment_record = interpreter.vm().heap().allocate<DeclarativeEnvironmentRecord>(interpreter.global_object(), move(resolved_variables), interpreter.vm().current_scope());
auto* environment_record = interpreter.vm().heap().allocate<DeclarativeEnvironmentRecord>(interpreter.global_object(), move(resolved_variables), interpreter.vm().current_environment_record());
interpreter.vm().call_frame().environment_record = environment_record;
}

8
Userland/Libraries/LibJS/Interpreter.cpp
View file

@ -83,7 +83,7 @@ void Interpreter::enter_scope(const ScopeNode& scope_node, ScopeType scope_type,
{
ScopeGuard guard([&] {
for (auto& declaration : scope_node.functions()) {
auto* function = ScriptFunction::create(global_object, declaration.name(), declaration.body(), declaration.parameters(), declaration.function_length(), current_scope(), declaration.kind(), declaration.is_strict_mode());
auto* function = ScriptFunction::create(global_object, declaration.name(), declaration.body(), declaration.parameters(), declaration.function_length(), current_environment_record(), declaration.kind(), declaration.is_strict_mode());
vm().set_variable(declaration.name(), function, global_object);
}
});
@ -91,7 +91,7 @@ void Interpreter::enter_scope(const ScopeNode& scope_node, ScopeType scope_type,
if (scope_type == ScopeType::Function) {
push_scope({ scope_type, scope_node, false });
for (auto& declaration : scope_node.functions())
current_scope()->put_into_environment_record(declaration.name(), { js_undefined(), DeclarationKind::Var });
current_environment_record()->put_into_environment_record(declaration.name(), { js_undefined(), DeclarationKind::Var });
return;
}
@ -131,7 +131,7 @@ void Interpreter::enter_scope(const ScopeNode& scope_node, ScopeType scope_type,
bool pushed_environment_record = false;
if (!scope_variables_with_declaration_kind.is_empty()) {
auto* environment_record = heap().allocate<DeclarativeEnvironmentRecord>(global_object, move(scope_variables_with_declaration_kind), current_scope());
auto* environment_record = heap().allocate<DeclarativeEnvironmentRecord>(global_object, move(scope_variables_with_declaration_kind), current_environment_record());
vm().call_frame().environment_record = environment_record;
pushed_environment_record = true;
}
@ -193,7 +193,7 @@ Value Interpreter::execute_statement(GlobalObject& global_object, const Statemen
return last_value;
}
DeclarativeEnvironmentRecord* Interpreter::current_environment()
DeclarativeEnvironmentRecord* Interpreter::current_declarative_environment_record()
{
VERIFY(is<DeclarativeEnvironmentRecord>(vm().call_frame().environment_record));
return static_cast<DeclarativeEnvironmentRecord*>(vm().call_frame().environment_record);

5
Userland/Libraries/LibJS/Interpreter.h
View file

@ -56,8 +56,9 @@ public:
ALWAYS_INLINE Heap& heap() { return vm().heap(); }
ALWAYS_INLINE Exception* exception() { return vm().exception(); }
EnvironmentRecord* current_scope() { return vm().current_scope(); }
DeclarativeEnvironmentRecord* current_environment();
EnvironmentRecord* current_environment_record() { return vm().current_environment_record(); }
DeclarativeEnvironmentRecord* current_declarative_environment_record();
void enter_scope(const ScopeNode&, ScopeType, GlobalObject&);
void exit_scope(const ScopeNode&);

2
Userland/Libraries/LibJS/Runtime/GeneratorFunctionConstructor.cpp
View file

@ -62,7 +62,7 @@ Value GeneratorFunctionConstructor::construct(Function& new_target)
block.dump(executable);
}
return ScriptFunction::create(global_object(), function->name(), function->body(), function->parameters(), function->function_length(), vm().current_scope(), FunctionKind::Generator, function->is_strict_mode(), false);
return ScriptFunction::create(global_object(), function->name(), function->body(), function->parameters(), function->function_length(), vm().current_environment_record(), FunctionKind::Generator, function->is_strict_mode(), false);
}
}

2
Userland/Libraries/LibJS/Runtime/ScriptFunction.cpp
View file

@ -166,7 +166,7 @@ Value ScriptFunction::execute_function_body()
if (i >= call_frame_args.size())
call_frame_args.resize(i + 1);
call_frame_args[i] = argument_value;
vm.assign(param, argument_value, global_object(), true, vm.current_scope());
vm.assign(param, argument_value, global_object(), true, vm.current_environment_record());
});
if (vm.exception())

20
Userland/Libraries/LibJS/Runtime/VM.cpp
View file

@ -135,7 +135,7 @@ void VM::set_variable(const FlyString& name, Value value, GlobalObject& global_o
{
Optional<Variable> possible_match;
if (!specific_scope && m_call_stack.size()) {
for (auto* environment_record = current_scope(); environment_record; environment_record = environment_record->outer_environment()) {
for (auto* environment_record = current_environment_record(); environment_record; environment_record = environment_record->outer_environment()) {
possible_match = environment_record->get_from_environment_record(name);
if (possible_match.has_value()) {
specific_scope = environment_record;
@ -167,7 +167,7 @@ bool VM::delete_variable(FlyString const& name)
EnvironmentRecord* specific_scope = nullptr;
Optional<Variable> possible_match;
if (!m_call_stack.is_empty()) {
for (auto* environment_record = current_scope(); environment_record; environment_record = environment_record->outer_environment()) {
for (auto* environment_record = current_environment_record(); environment_record; environment_record = environment_record->outer_environment()) {
possible_match = environment_record->get_from_environment_record(name);
if (possible_match.has_value()) {
specific_scope = environment_record;
@ -363,7 +363,7 @@ Value VM::get_variable(const FlyString& name, GlobalObject& global_object)
// a function parameter, or by a local var declaration, we use that.
// Otherwise, we return a lazily constructed Array with all the argument values.
// FIXME: Do something much more spec-compliant.
auto possible_match = current_scope()->get_from_environment_record(name);
auto possible_match = current_environment_record()->get_from_environment_record(name);
if (possible_match.has_value())
return possible_match.value().value;
if (!call_frame().arguments_object) {
@ -376,7 +376,7 @@ Value VM::get_variable(const FlyString& name, GlobalObject& global_object)
return call_frame().arguments_object;
}
for (auto* environment_record = current_scope(); environment_record; environment_record = environment_record->outer_environment()) {
for (auto* environment_record = current_environment_record(); environment_record; environment_record = environment_record->outer_environment()) {
auto possible_match = environment_record->get_from_environment_record(name);
if (exception())
return {};
@ -393,7 +393,7 @@ Value VM::get_variable(const FlyString& name, GlobalObject& global_object)
Reference VM::get_reference(const FlyString& name)
{
if (m_call_stack.size()) {
for (auto* environment_record = current_scope(); environment_record; environment_record = environment_record->outer_environment()) {
for (auto* environment_record = current_environment_record(); environment_record; environment_record = environment_record->outer_environment()) {
if (is<GlobalObject>(environment_record))
break;
auto possible_match = environment_record->get_from_environment_record(name);
@ -460,8 +460,8 @@ Value VM::construct(Function& function, Function& new_target, Optional<MarkedVal
// set the prototype on objects created by constructors that return an object (i.e. NativeFunction subclasses).
if (function.constructor_kind() == Function::ConstructorKind::Base && new_target.constructor_kind() == Function::ConstructorKind::Derived && result.is_object()) {
if (environment) {
VERIFY(is<DeclarativeEnvironmentRecord>(current_scope()));
static_cast<DeclarativeEnvironmentRecord*>(current_scope())->replace_this_binding(result);
VERIFY(is<DeclarativeEnvironmentRecord>(current_environment_record()));
static_cast<DeclarativeEnvironmentRecord*>(current_environment_record())->replace_this_binding(result);
}
auto prototype = new_target.get(names.prototype);
if (exception())
@ -508,7 +508,7 @@ Value VM::resolve_this_binding(GlobalObject& global_object) const
const EnvironmentRecord* VM::find_this_scope() const
{
// We will always return because the Global environment will always be reached, which has a |this| binding.
for (auto* environment_record = current_scope(); environment_record; environment_record = environment_record->outer_environment()) {
for (auto* environment_record = current_environment_record(); environment_record; environment_record = environment_record->outer_environment()) {
if (environment_record->has_this_binding())
return environment_record;
}
@ -622,9 +622,9 @@ void VM::dump_backtrace() const
dbgln("-> {}", m_call_stack[i]->function_name);
}
void VM::dump_scope_chain() const
void VM::dump_environment_record_chain() const
{
for (auto* environment_record = current_scope(); environment_record; environment_record = environment_record->outer_environment()) {
for (auto* environment_record = current_environment_record(); environment_record; environment_record = environment_record->outer_environment()) {
dbgln("+> {} ({:p})", environment_record->class_name(), environment_record);
if (is<DeclarativeEnvironmentRecord>(*environment_record)) {
auto& declarative_environment_record = static_cast<DeclarativeEnvironmentRecord const&>(*environment_record);

6
Userland/Libraries/LibJS/Runtime/VM.h
View file

@ -72,7 +72,7 @@ public:
void clear_exception() { m_exception = nullptr; }
void dump_backtrace() const;
void dump_scope_chain() const;
void dump_environment_record_chain() const;
class InterpreterExecutionScope {
public:
@ -122,8 +122,8 @@ public:
const Vector<CallFrame*>& call_stack() const { return m_call_stack; }
Vector<CallFrame*>& call_stack() { return m_call_stack; }
const EnvironmentRecord* current_scope() const { return call_frame().environment_record; }
EnvironmentRecord* current_scope() { return call_frame().environment_record; }
EnvironmentRecord const* current_environment_record() const { return call_frame().environment_record; }
EnvironmentRecord* current_environment_record() { return call_frame().environment_record; }
bool in_strict_mode() const;