893 lines
34 KiB
C++
893 lines
34 KiB
C++
/*
|
|
* Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
|
|
* Copyright (c) 2021-2022, Linus Groh <linusg@serenityos.org>
|
|
* Copyright (c) 2021, Gunnar Beutner <gbeutner@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <AK/HashTable.h>
|
|
#include <LibJS/Bytecode/Interpreter.h>
|
|
#include <LibJS/Bytecode/Op.h>
|
|
#include <LibJS/Runtime/AbstractOperations.h>
|
|
#include <LibJS/Runtime/Array.h>
|
|
#include <LibJS/Runtime/BigInt.h>
|
|
#include <LibJS/Runtime/DeclarativeEnvironment.h>
|
|
#include <LibJS/Runtime/ECMAScriptFunctionObject.h>
|
|
#include <LibJS/Runtime/Environment.h>
|
|
#include <LibJS/Runtime/GlobalObject.h>
|
|
#include <LibJS/Runtime/Iterator.h>
|
|
#include <LibJS/Runtime/IteratorOperations.h>
|
|
#include <LibJS/Runtime/ObjectEnvironment.h>
|
|
#include <LibJS/Runtime/RegExpObject.h>
|
|
#include <LibJS/Runtime/Value.h>
|
|
|
|
namespace JS::Bytecode {
|
|
|
|
String Instruction::to_string(Bytecode::Executable const& executable) const
|
|
{
|
|
#define __BYTECODE_OP(op) \
|
|
case Instruction::Type::op: \
|
|
return static_cast<Bytecode::Op::op const&>(*this).to_string_impl(executable);
|
|
|
|
switch (type()) {
|
|
ENUMERATE_BYTECODE_OPS(__BYTECODE_OP)
|
|
default:
|
|
VERIFY_NOT_REACHED();
|
|
}
|
|
|
|
#undef __BYTECODE_OP
|
|
}
|
|
|
|
}
|
|
|
|
namespace JS::Bytecode::Op {
|
|
|
|
ThrowCompletionOr<void> Load::execute_impl(Bytecode::Interpreter& interpreter) const
|
|
{
|
|
interpreter.accumulator() = interpreter.reg(m_src);
|
|
return {};
|
|
}
|
|
|
|
ThrowCompletionOr<void> LoadImmediate::execute_impl(Bytecode::Interpreter& interpreter) const
|
|
{
|
|
interpreter.accumulator() = m_value;
|
|
return {};
|
|
}
|
|
|
|
ThrowCompletionOr<void> Store::execute_impl(Bytecode::Interpreter& interpreter) const
|
|
{
|
|
interpreter.reg(m_dst) = interpreter.accumulator();
|
|
return {};
|
|
}
|
|
|
|
static ThrowCompletionOr<Value> abstract_inequals(GlobalObject& global_object, Value src1, Value src2)
|
|
{
|
|
return Value(!TRY(is_loosely_equal(global_object, src1, src2)));
|
|
}
|
|
|
|
static ThrowCompletionOr<Value> abstract_equals(GlobalObject& global_object, Value src1, Value src2)
|
|
{
|
|
return Value(TRY(is_loosely_equal(global_object, src1, src2)));
|
|
}
|
|
|
|
static ThrowCompletionOr<Value> typed_inequals(GlobalObject&, Value src1, Value src2)
|
|
{
|
|
return Value(!is_strictly_equal(src1, src2));
|
|
}
|
|
|
|
static ThrowCompletionOr<Value> typed_equals(GlobalObject&, Value src1, Value src2)
|
|
{
|
|
return Value(is_strictly_equal(src1, src2));
|
|
}
|
|
|
|
#define JS_DEFINE_COMMON_BINARY_OP(OpTitleCase, op_snake_case) \
|
|
ThrowCompletionOr<void> OpTitleCase::execute_impl(Bytecode::Interpreter& interpreter) const \
|
|
{ \
|
|
auto lhs = interpreter.reg(m_lhs_reg); \
|
|
auto rhs = interpreter.accumulator(); \
|
|
interpreter.accumulator() = TRY(op_snake_case(interpreter.global_object(), lhs, rhs)); \
|
|
return {}; \
|
|
} \
|
|
String OpTitleCase::to_string_impl(Bytecode::Executable const&) const \
|
|
{ \
|
|
return String::formatted(#OpTitleCase " {}", m_lhs_reg); \
|
|
}
|
|
|
|
JS_ENUMERATE_COMMON_BINARY_OPS(JS_DEFINE_COMMON_BINARY_OP)
|
|
|
|
static ThrowCompletionOr<Value> not_(GlobalObject&, Value value)
|
|
{
|
|
return Value(!value.to_boolean());
|
|
}
|
|
|
|
static ThrowCompletionOr<Value> typeof_(GlobalObject& global_object, Value value)
|
|
{
|
|
return Value(js_string(global_object.vm(), value.typeof()));
|
|
}
|
|
|
|
#define JS_DEFINE_COMMON_UNARY_OP(OpTitleCase, op_snake_case) \
|
|
ThrowCompletionOr<void> OpTitleCase::execute_impl(Bytecode::Interpreter& interpreter) const \
|
|
{ \
|
|
interpreter.accumulator() = TRY(op_snake_case(interpreter.global_object(), interpreter.accumulator())); \
|
|
return {}; \
|
|
} \
|
|
String OpTitleCase::to_string_impl(Bytecode::Executable const&) const \
|
|
{ \
|
|
return #OpTitleCase; \
|
|
}
|
|
|
|
JS_ENUMERATE_COMMON_UNARY_OPS(JS_DEFINE_COMMON_UNARY_OP)
|
|
|
|
ThrowCompletionOr<void> NewBigInt::execute_impl(Bytecode::Interpreter& interpreter) const
|
|
{
|
|
interpreter.accumulator() = js_bigint(interpreter.vm().heap(), m_bigint);
|
|
return {};
|
|
}
|
|
|
|
ThrowCompletionOr<void> NewArray::execute_impl(Bytecode::Interpreter& interpreter) const
|
|
{
|
|
Vector<Value> elements;
|
|
elements.ensure_capacity(m_element_count);
|
|
for (size_t i = 0; i < m_element_count; i++)
|
|
elements.append(interpreter.reg(m_elements[i]));
|
|
interpreter.accumulator() = Array::create_from(interpreter.global_object(), elements);
|
|
return {};
|
|
}
|
|
|
|
// FIXME: Since the accumulator is a Value, we store an object there and have to convert back and forth between that an Iterator records. Not great.
|
|
// Make sure to put this into the accumulator before the iterator object disappears from the stack to prevent the members from being GC'd.
|
|
static Object* iterator_to_object(GlobalObject& global_object, Iterator iterator)
|
|
{
|
|
auto& vm = global_object.vm();
|
|
auto* object = Object::create(global_object, nullptr);
|
|
object->define_direct_property(vm.names.iterator, iterator.iterator, 0);
|
|
object->define_direct_property(vm.names.next, iterator.next_method, 0);
|
|
object->define_direct_property(vm.names.done, Value(iterator.done), 0);
|
|
return object;
|
|
}
|
|
|
|
static Iterator object_to_iterator(GlobalObject& global_object, Object& object)
|
|
{
|
|
auto& vm = global_object.vm();
|
|
return Iterator {
|
|
.iterator = &MUST(object.get(vm.names.iterator)).as_object(),
|
|
.next_method = MUST(object.get(vm.names.next)),
|
|
.done = MUST(object.get(vm.names.done)).as_bool()
|
|
};
|
|
}
|
|
|
|
ThrowCompletionOr<void> IteratorToArray::execute_impl(Bytecode::Interpreter& interpreter) const
|
|
{
|
|
auto& global_object = interpreter.global_object();
|
|
auto iterator_object = TRY(interpreter.accumulator().to_object(global_object));
|
|
auto iterator = object_to_iterator(global_object, *iterator_object);
|
|
|
|
auto* array = MUST(Array::create(global_object, 0));
|
|
size_t index = 0;
|
|
|
|
while (true) {
|
|
auto* iterator_result = TRY(iterator_next(global_object, iterator));
|
|
|
|
auto complete = TRY(iterator_complete(global_object, *iterator_result));
|
|
|
|
if (complete) {
|
|
interpreter.accumulator() = array;
|
|
return {};
|
|
}
|
|
|
|
auto value = TRY(iterator_value(global_object, *iterator_result));
|
|
|
|
MUST(array->create_data_property_or_throw(index, value));
|
|
index++;
|
|
}
|
|
return {};
|
|
}
|
|
|
|
ThrowCompletionOr<void> NewString::execute_impl(Bytecode::Interpreter& interpreter) const
|
|
{
|
|
interpreter.accumulator() = js_string(interpreter.vm(), interpreter.current_executable().get_string(m_string));
|
|
return {};
|
|
}
|
|
|
|
ThrowCompletionOr<void> NewObject::execute_impl(Bytecode::Interpreter& interpreter) const
|
|
{
|
|
interpreter.accumulator() = Object::create(interpreter.global_object(), interpreter.global_object().object_prototype());
|
|
return {};
|
|
}
|
|
|
|
ThrowCompletionOr<void> NewRegExp::execute_impl(Bytecode::Interpreter& interpreter) const
|
|
{
|
|
auto source = interpreter.current_executable().get_string(m_source_index);
|
|
auto flags = interpreter.current_executable().get_string(m_flags_index);
|
|
|
|
interpreter.accumulator() = TRY(regexp_create(interpreter.global_object(), js_string(interpreter.vm(), source), js_string(interpreter.vm(), flags)));
|
|
return {};
|
|
}
|
|
|
|
ThrowCompletionOr<void> CopyObjectExcludingProperties::execute_impl(Bytecode::Interpreter& interpreter) const
|
|
{
|
|
auto* from_object = TRY(interpreter.reg(m_from_object).to_object(interpreter.global_object()));
|
|
|
|
auto* to_object = Object::create(interpreter.global_object(), interpreter.global_object().object_prototype());
|
|
|
|
HashTable<Value, ValueTraits> excluded_names;
|
|
for (size_t i = 0; i < m_excluded_names_count; ++i)
|
|
excluded_names.set(interpreter.reg(m_excluded_names[i]));
|
|
|
|
auto own_keys = TRY(from_object->internal_own_property_keys());
|
|
|
|
for (auto& key : own_keys) {
|
|
if (!excluded_names.contains(key)) {
|
|
auto property_key = TRY(key.to_property_key(interpreter.global_object()));
|
|
auto property_value = TRY(from_object->get(property_key));
|
|
to_object->define_direct_property(property_key, property_value, JS::default_attributes);
|
|
}
|
|
}
|
|
|
|
interpreter.accumulator() = to_object;
|
|
return {};
|
|
}
|
|
|
|
ThrowCompletionOr<void> ConcatString::execute_impl(Bytecode::Interpreter& interpreter) const
|
|
{
|
|
interpreter.reg(m_lhs) = TRY(add(interpreter.global_object(), interpreter.reg(m_lhs), interpreter.accumulator()));
|
|
return {};
|
|
}
|
|
|
|
ThrowCompletionOr<void> GetVariable::execute_impl(Bytecode::Interpreter& interpreter) const
|
|
{
|
|
auto get_reference = [&]() -> ThrowCompletionOr<Reference> {
|
|
auto const& string = interpreter.current_executable().get_identifier(m_identifier);
|
|
if (m_cached_environment_coordinate.has_value()) {
|
|
auto* environment = interpreter.vm().running_execution_context().lexical_environment;
|
|
for (size_t i = 0; i < m_cached_environment_coordinate->hops; ++i)
|
|
environment = environment->outer_environment();
|
|
VERIFY(environment);
|
|
VERIFY(environment->is_declarative_environment());
|
|
if (!environment->is_permanently_screwed_by_eval()) {
|
|
return Reference { *environment, string, interpreter.vm().in_strict_mode(), m_cached_environment_coordinate };
|
|
}
|
|
m_cached_environment_coordinate = {};
|
|
}
|
|
|
|
auto reference = TRY(interpreter.vm().resolve_binding(string));
|
|
if (reference.environment_coordinate().has_value())
|
|
m_cached_environment_coordinate = reference.environment_coordinate();
|
|
return reference;
|
|
};
|
|
auto reference = TRY(get_reference());
|
|
interpreter.accumulator() = TRY(reference.get_value(interpreter.global_object()));
|
|
return {};
|
|
}
|
|
|
|
ThrowCompletionOr<void> CreateEnvironment::execute_impl(Bytecode::Interpreter& interpreter) const
|
|
{
|
|
auto make_and_swap_envs = [&](auto*& old_environment) {
|
|
Environment* environment = new_declarative_environment(*old_environment);
|
|
swap(old_environment, environment);
|
|
return environment;
|
|
};
|
|
if (m_mode == EnvironmentMode::Lexical)
|
|
interpreter.saved_lexical_environment_stack().append(make_and_swap_envs(interpreter.vm().running_execution_context().lexical_environment));
|
|
else if (m_mode == EnvironmentMode::Var)
|
|
interpreter.saved_variable_environment_stack().append(make_and_swap_envs(interpreter.vm().running_execution_context().variable_environment));
|
|
return {};
|
|
}
|
|
|
|
ThrowCompletionOr<void> EnterObjectEnvironment::execute_impl(Bytecode::Interpreter& interpreter) const
|
|
{
|
|
auto& old_environment = interpreter.vm().running_execution_context().lexical_environment;
|
|
interpreter.saved_lexical_environment_stack().append(old_environment);
|
|
auto object = TRY(interpreter.accumulator().to_object(interpreter.global_object()));
|
|
interpreter.vm().running_execution_context().lexical_environment = new_object_environment(*object, true, old_environment);
|
|
return {};
|
|
}
|
|
|
|
ThrowCompletionOr<void> CreateVariable::execute_impl(Bytecode::Interpreter& interpreter) const
|
|
{
|
|
auto& vm = interpreter.vm();
|
|
auto const& name = interpreter.current_executable().get_identifier(m_identifier);
|
|
|
|
if (m_mode == EnvironmentMode::Lexical) {
|
|
// Note: This is papering over an issue where "FunctionDeclarationInstantiation" creates these bindings for us.
|
|
// Instead of crashing in there, we'll just raise an exception here.
|
|
if (TRY(vm.lexical_environment()->has_binding(name)))
|
|
return vm.throw_completion<InternalError>(interpreter.global_object(), String::formatted("Lexical environment already has binding '{}'", name));
|
|
|
|
if (m_is_immutable)
|
|
vm.lexical_environment()->create_immutable_binding(interpreter.global_object(), name, vm.in_strict_mode());
|
|
else
|
|
vm.lexical_environment()->create_mutable_binding(interpreter.global_object(), name, vm.in_strict_mode());
|
|
} else {
|
|
if (m_is_immutable)
|
|
vm.variable_environment()->create_immutable_binding(interpreter.global_object(), name, vm.in_strict_mode());
|
|
else
|
|
vm.variable_environment()->create_mutable_binding(interpreter.global_object(), name, vm.in_strict_mode());
|
|
}
|
|
return {};
|
|
}
|
|
|
|
ThrowCompletionOr<void> SetVariable::execute_impl(Bytecode::Interpreter& interpreter) const
|
|
{
|
|
auto& vm = interpreter.vm();
|
|
auto const& name = interpreter.current_executable().get_identifier(m_identifier);
|
|
auto environment = m_mode == EnvironmentMode::Lexical ? vm.running_execution_context().lexical_environment : vm.running_execution_context().variable_environment;
|
|
auto reference = TRY(vm.resolve_binding(name, environment));
|
|
switch (m_initialization_mode) {
|
|
case InitializationMode::Initialize:
|
|
TRY(reference.initialize_referenced_binding(interpreter.global_object(), interpreter.accumulator()));
|
|
break;
|
|
case InitializationMode::Set:
|
|
TRY(reference.put_value(interpreter.global_object(), interpreter.accumulator()));
|
|
break;
|
|
case InitializationMode::InitializeOrSet:
|
|
VERIFY(reference.is_environment_reference());
|
|
VERIFY(reference.base_environment().is_declarative_environment());
|
|
TRY(static_cast<DeclarativeEnvironment&>(reference.base_environment()).initialize_or_set_mutable_binding(interpreter.global_object(), name, interpreter.accumulator()));
|
|
break;
|
|
}
|
|
return {};
|
|
}
|
|
|
|
ThrowCompletionOr<void> GetById::execute_impl(Bytecode::Interpreter& interpreter) const
|
|
{
|
|
auto* object = TRY(interpreter.accumulator().to_object(interpreter.global_object()));
|
|
interpreter.accumulator() = TRY(object->get(interpreter.current_executable().get_identifier(m_property)));
|
|
return {};
|
|
}
|
|
|
|
ThrowCompletionOr<void> PutById::execute_impl(Bytecode::Interpreter& interpreter) const
|
|
{
|
|
auto* object = TRY(interpreter.reg(m_base).to_object(interpreter.global_object()));
|
|
TRY(object->set(interpreter.current_executable().get_identifier(m_property), interpreter.accumulator(), Object::ShouldThrowExceptions::Yes));
|
|
return {};
|
|
}
|
|
|
|
ThrowCompletionOr<void> Jump::execute_impl(Bytecode::Interpreter& interpreter) const
|
|
{
|
|
interpreter.jump(*m_true_target);
|
|
return {};
|
|
}
|
|
|
|
ThrowCompletionOr<void> ResolveThisBinding::execute_impl(Bytecode::Interpreter& interpreter) const
|
|
{
|
|
interpreter.accumulator() = TRY(interpreter.vm().resolve_this_binding(interpreter.global_object()));
|
|
return {};
|
|
}
|
|
|
|
void Jump::replace_references_impl(BasicBlock const& from, BasicBlock const& to)
|
|
{
|
|
if (m_true_target.has_value() && &m_true_target->block() == &from)
|
|
m_true_target = Label { to };
|
|
if (m_false_target.has_value() && &m_false_target->block() == &from)
|
|
m_false_target = Label { to };
|
|
}
|
|
|
|
ThrowCompletionOr<void> JumpConditional::execute_impl(Bytecode::Interpreter& interpreter) const
|
|
{
|
|
VERIFY(m_true_target.has_value());
|
|
VERIFY(m_false_target.has_value());
|
|
auto result = interpreter.accumulator();
|
|
if (result.to_boolean())
|
|
interpreter.jump(m_true_target.value());
|
|
else
|
|
interpreter.jump(m_false_target.value());
|
|
return {};
|
|
}
|
|
|
|
ThrowCompletionOr<void> JumpNullish::execute_impl(Bytecode::Interpreter& interpreter) const
|
|
{
|
|
VERIFY(m_true_target.has_value());
|
|
VERIFY(m_false_target.has_value());
|
|
auto result = interpreter.accumulator();
|
|
if (result.is_nullish())
|
|
interpreter.jump(m_true_target.value());
|
|
else
|
|
interpreter.jump(m_false_target.value());
|
|
return {};
|
|
}
|
|
|
|
ThrowCompletionOr<void> JumpUndefined::execute_impl(Bytecode::Interpreter& interpreter) const
|
|
{
|
|
VERIFY(m_true_target.has_value());
|
|
VERIFY(m_false_target.has_value());
|
|
auto result = interpreter.accumulator();
|
|
if (result.is_undefined())
|
|
interpreter.jump(m_true_target.value());
|
|
else
|
|
interpreter.jump(m_false_target.value());
|
|
return {};
|
|
}
|
|
|
|
ThrowCompletionOr<void> Call::execute_impl(Bytecode::Interpreter& interpreter) const
|
|
{
|
|
auto callee = interpreter.reg(m_callee);
|
|
if (!callee.is_function())
|
|
return interpreter.vm().throw_completion<TypeError>(interpreter.global_object(), ErrorType::IsNotA, callee.to_string_without_side_effects(), "function"sv);
|
|
|
|
auto& function = callee.as_function();
|
|
|
|
auto this_value = interpreter.reg(m_this_value);
|
|
|
|
MarkedVector<Value> argument_values { interpreter.vm().heap() };
|
|
for (size_t i = 0; i < m_argument_count; ++i)
|
|
argument_values.append(interpreter.reg(m_arguments[i]));
|
|
|
|
Value return_value;
|
|
if (m_type == CallType::Call)
|
|
return_value = TRY(call(interpreter.global_object(), function, this_value, move(argument_values)));
|
|
else
|
|
return_value = TRY(construct(interpreter.global_object(), function, move(argument_values)));
|
|
|
|
interpreter.accumulator() = return_value;
|
|
return {};
|
|
}
|
|
|
|
ThrowCompletionOr<void> NewFunction::execute_impl(Bytecode::Interpreter& interpreter) const
|
|
{
|
|
auto& vm = interpreter.vm();
|
|
interpreter.accumulator() = ECMAScriptFunctionObject::create(interpreter.global_object(), m_function_node.name(), m_function_node.source_text(), m_function_node.body(), m_function_node.parameters(), m_function_node.function_length(), vm.lexical_environment(), vm.running_execution_context().private_environment, m_function_node.kind(), m_function_node.is_strict_mode(), m_function_node.might_need_arguments_object(), m_function_node.is_arrow_function());
|
|
return {};
|
|
}
|
|
|
|
ThrowCompletionOr<void> Return::execute_impl(Bytecode::Interpreter& interpreter) const
|
|
{
|
|
interpreter.do_return(interpreter.accumulator().value_or(js_undefined()));
|
|
return {};
|
|
}
|
|
|
|
ThrowCompletionOr<void> Increment::execute_impl(Bytecode::Interpreter& interpreter) const
|
|
{
|
|
auto old_value = TRY(interpreter.accumulator().to_numeric(interpreter.global_object()));
|
|
|
|
if (old_value.is_number())
|
|
interpreter.accumulator() = Value(old_value.as_double() + 1);
|
|
else
|
|
interpreter.accumulator() = js_bigint(interpreter.vm().heap(), old_value.as_bigint().big_integer().plus(Crypto::SignedBigInteger { 1 }));
|
|
return {};
|
|
}
|
|
|
|
ThrowCompletionOr<void> Decrement::execute_impl(Bytecode::Interpreter& interpreter) const
|
|
{
|
|
auto old_value = TRY(interpreter.accumulator().to_numeric(interpreter.global_object()));
|
|
|
|
if (old_value.is_number())
|
|
interpreter.accumulator() = Value(old_value.as_double() - 1);
|
|
else
|
|
interpreter.accumulator() = js_bigint(interpreter.vm().heap(), old_value.as_bigint().big_integer().minus(Crypto::SignedBigInteger { 1 }));
|
|
return {};
|
|
}
|
|
|
|
ThrowCompletionOr<void> Throw::execute_impl(Bytecode::Interpreter& interpreter) const
|
|
{
|
|
return throw_completion(interpreter.accumulator());
|
|
}
|
|
|
|
ThrowCompletionOr<void> EnterUnwindContext::execute_impl(Bytecode::Interpreter& interpreter) const
|
|
{
|
|
interpreter.enter_unwind_context(m_handler_target, m_finalizer_target);
|
|
interpreter.jump(m_entry_point);
|
|
return {};
|
|
}
|
|
|
|
void EnterUnwindContext::replace_references_impl(BasicBlock const& from, BasicBlock const& to)
|
|
{
|
|
if (&m_entry_point.block() == &from)
|
|
m_entry_point = Label { to };
|
|
if (m_handler_target.has_value() && &m_handler_target->block() == &from)
|
|
m_handler_target = Label { to };
|
|
if (m_finalizer_target.has_value() && &m_finalizer_target->block() == &from)
|
|
m_finalizer_target = Label { to };
|
|
}
|
|
|
|
ThrowCompletionOr<void> FinishUnwind::execute_impl(Bytecode::Interpreter& interpreter) const
|
|
{
|
|
interpreter.leave_unwind_context();
|
|
interpreter.jump(m_next_target);
|
|
return {};
|
|
}
|
|
|
|
void FinishUnwind::replace_references_impl(BasicBlock const& from, BasicBlock const& to)
|
|
{
|
|
if (&m_next_target.block() == &from)
|
|
m_next_target = Label { to };
|
|
}
|
|
|
|
ThrowCompletionOr<void> LeaveEnvironment::execute_impl(Bytecode::Interpreter& interpreter) const
|
|
{
|
|
if (m_mode == EnvironmentMode::Lexical)
|
|
interpreter.vm().running_execution_context().lexical_environment = interpreter.saved_lexical_environment_stack().take_last();
|
|
if (m_mode == EnvironmentMode::Var)
|
|
interpreter.vm().running_execution_context().variable_environment = interpreter.saved_variable_environment_stack().take_last();
|
|
return {};
|
|
}
|
|
|
|
ThrowCompletionOr<void> LeaveUnwindContext::execute_impl(Bytecode::Interpreter& interpreter) const
|
|
{
|
|
interpreter.leave_unwind_context();
|
|
return {};
|
|
}
|
|
|
|
ThrowCompletionOr<void> ContinuePendingUnwind::execute_impl(Bytecode::Interpreter& interpreter) const
|
|
{
|
|
return interpreter.continue_pending_unwind(m_resume_target);
|
|
}
|
|
|
|
void ContinuePendingUnwind::replace_references_impl(BasicBlock const& from, BasicBlock const& to)
|
|
{
|
|
if (&m_resume_target.block() == &from)
|
|
m_resume_target = Label { to };
|
|
}
|
|
|
|
ThrowCompletionOr<void> PushDeclarativeEnvironment::execute_impl(Bytecode::Interpreter& interpreter) const
|
|
{
|
|
auto* environment = interpreter.vm().heap().allocate_without_global_object<DeclarativeEnvironment>(interpreter.vm().lexical_environment());
|
|
interpreter.vm().running_execution_context().lexical_environment = environment;
|
|
interpreter.vm().running_execution_context().variable_environment = environment;
|
|
return {};
|
|
}
|
|
|
|
ThrowCompletionOr<void> Yield::execute_impl(Bytecode::Interpreter& interpreter) const
|
|
{
|
|
auto yielded_value = interpreter.accumulator().value_or(js_undefined());
|
|
auto object = JS::Object::create(interpreter.global_object(), nullptr);
|
|
object->define_direct_property("result", yielded_value, JS::default_attributes);
|
|
if (m_continuation_label.has_value())
|
|
object->define_direct_property("continuation", Value(static_cast<double>(reinterpret_cast<u64>(&m_continuation_label->block()))), JS::default_attributes);
|
|
else
|
|
object->define_direct_property("continuation", Value(0), JS::default_attributes);
|
|
interpreter.do_return(object);
|
|
return {};
|
|
}
|
|
|
|
void Yield::replace_references_impl(BasicBlock const& from, BasicBlock const& to)
|
|
{
|
|
if (m_continuation_label.has_value() && &m_continuation_label->block() == &from)
|
|
m_continuation_label = Label { to };
|
|
}
|
|
|
|
ThrowCompletionOr<void> GetByValue::execute_impl(Bytecode::Interpreter& interpreter) const
|
|
{
|
|
auto* object = TRY(interpreter.reg(m_base).to_object(interpreter.global_object()));
|
|
|
|
auto property_key = TRY(interpreter.accumulator().to_property_key(interpreter.global_object()));
|
|
|
|
interpreter.accumulator() = TRY(object->get(property_key));
|
|
return {};
|
|
}
|
|
|
|
ThrowCompletionOr<void> PutByValue::execute_impl(Bytecode::Interpreter& interpreter) const
|
|
{
|
|
auto* object = TRY(interpreter.reg(m_base).to_object(interpreter.global_object()));
|
|
|
|
auto property_key = TRY(interpreter.reg(m_property).to_property_key(interpreter.global_object()));
|
|
TRY(object->set(property_key, interpreter.accumulator(), Object::ShouldThrowExceptions::Yes));
|
|
return {};
|
|
}
|
|
|
|
ThrowCompletionOr<void> GetIterator::execute_impl(Bytecode::Interpreter& interpreter) const
|
|
{
|
|
auto iterator = TRY(get_iterator(interpreter.global_object(), interpreter.accumulator()));
|
|
interpreter.accumulator() = iterator_to_object(interpreter.global_object(), iterator);
|
|
return {};
|
|
}
|
|
|
|
ThrowCompletionOr<void> IteratorNext::execute_impl(Bytecode::Interpreter& interpreter) const
|
|
{
|
|
auto* iterator_object = TRY(interpreter.accumulator().to_object(interpreter.global_object()));
|
|
auto iterator = object_to_iterator(interpreter.global_object(), *iterator_object);
|
|
|
|
interpreter.accumulator() = TRY(iterator_next(interpreter.global_object(), iterator));
|
|
return {};
|
|
}
|
|
|
|
ThrowCompletionOr<void> IteratorResultDone::execute_impl(Bytecode::Interpreter& interpreter) const
|
|
{
|
|
auto* iterator_result = TRY(interpreter.accumulator().to_object(interpreter.global_object()));
|
|
|
|
auto complete = TRY(iterator_complete(interpreter.global_object(), *iterator_result));
|
|
interpreter.accumulator() = Value(complete);
|
|
return {};
|
|
}
|
|
|
|
ThrowCompletionOr<void> IteratorResultValue::execute_impl(Bytecode::Interpreter& interpreter) const
|
|
{
|
|
auto* iterator_result = TRY(interpreter.accumulator().to_object(interpreter.global_object()));
|
|
|
|
interpreter.accumulator() = TRY(iterator_value(interpreter.global_object(), *iterator_result));
|
|
return {};
|
|
}
|
|
|
|
ThrowCompletionOr<void> NewClass::execute_impl(Bytecode::Interpreter& interpreter) const
|
|
{
|
|
auto name = m_class_expression.name();
|
|
auto scope = interpreter.ast_interpreter_scope();
|
|
auto& ast_interpreter = scope.interpreter();
|
|
auto class_object = TRY(m_class_expression.class_definition_evaluation(ast_interpreter, interpreter.global_object(), name, name.is_null() ? "" : name));
|
|
interpreter.accumulator() = class_object;
|
|
return {};
|
|
}
|
|
|
|
String Load::to_string_impl(Bytecode::Executable const&) const
|
|
{
|
|
return String::formatted("Load {}", m_src);
|
|
}
|
|
|
|
String LoadImmediate::to_string_impl(Bytecode::Executable const&) const
|
|
{
|
|
return String::formatted("LoadImmediate {}", m_value);
|
|
}
|
|
|
|
String Store::to_string_impl(Bytecode::Executable const&) const
|
|
{
|
|
return String::formatted("Store {}", m_dst);
|
|
}
|
|
|
|
String NewBigInt::to_string_impl(Bytecode::Executable const&) const
|
|
{
|
|
return String::formatted("NewBigInt \"{}\"", m_bigint.to_base(10));
|
|
}
|
|
|
|
String NewArray::to_string_impl(Bytecode::Executable const&) const
|
|
{
|
|
StringBuilder builder;
|
|
builder.append("NewArray");
|
|
if (m_element_count != 0) {
|
|
builder.append(" [");
|
|
for (size_t i = 0; i < m_element_count; ++i) {
|
|
builder.appendff("{}", m_elements[i]);
|
|
if (i != m_element_count - 1)
|
|
builder.append(',');
|
|
}
|
|
builder.append(']');
|
|
}
|
|
return builder.to_string();
|
|
}
|
|
|
|
String IteratorToArray::to_string_impl(const Bytecode::Executable&) const
|
|
{
|
|
return "IteratorToArray";
|
|
}
|
|
|
|
String NewString::to_string_impl(Bytecode::Executable const& executable) const
|
|
{
|
|
return String::formatted("NewString {} (\"{}\")", m_string, executable.string_table->get(m_string));
|
|
}
|
|
|
|
String NewObject::to_string_impl(Bytecode::Executable const&) const
|
|
{
|
|
return "NewObject";
|
|
}
|
|
|
|
String NewRegExp::to_string_impl(Bytecode::Executable const& executable) const
|
|
{
|
|
return String::formatted("NewRegExp source:{} (\"{}\") flags:{} (\"{}\")", m_source_index, executable.get_string(m_source_index), m_flags_index, executable.get_string(m_flags_index));
|
|
}
|
|
|
|
String CopyObjectExcludingProperties::to_string_impl(const Bytecode::Executable&) const
|
|
{
|
|
StringBuilder builder;
|
|
builder.appendff("CopyObjectExcludingProperties from:{}", m_from_object);
|
|
if (m_excluded_names_count != 0) {
|
|
builder.append(" excluding:[");
|
|
for (size_t i = 0; i < m_excluded_names_count; ++i) {
|
|
builder.appendff("{}", m_excluded_names[i]);
|
|
if (i != m_excluded_names_count - 1)
|
|
builder.append(',');
|
|
}
|
|
builder.append(']');
|
|
}
|
|
return builder.to_string();
|
|
}
|
|
|
|
String ConcatString::to_string_impl(Bytecode::Executable const&) const
|
|
{
|
|
return String::formatted("ConcatString {}", m_lhs);
|
|
}
|
|
|
|
String GetVariable::to_string_impl(Bytecode::Executable const& executable) const
|
|
{
|
|
return String::formatted("GetVariable {} ({})", m_identifier, executable.identifier_table->get(m_identifier));
|
|
}
|
|
|
|
String CreateEnvironment::to_string_impl(Bytecode::Executable const&) const
|
|
{
|
|
auto mode_string = m_mode == EnvironmentMode::Lexical
|
|
? "Lexical"
|
|
: "Variable";
|
|
return String::formatted("CreateEnvironment mode:{}", mode_string);
|
|
}
|
|
|
|
String CreateVariable::to_string_impl(Bytecode::Executable const& executable) const
|
|
{
|
|
auto mode_string = m_mode == EnvironmentMode::Lexical ? "Lexical" : "Variable";
|
|
return String::formatted("CreateVariable env:{} immutable:{} {} ({})", mode_string, m_is_immutable, m_identifier, executable.identifier_table->get(m_identifier));
|
|
}
|
|
|
|
String EnterObjectEnvironment::to_string_impl(const Executable&) const
|
|
{
|
|
return String::formatted("EnterObjectEnvironment");
|
|
}
|
|
|
|
String SetVariable::to_string_impl(Bytecode::Executable const& executable) const
|
|
{
|
|
auto initialization_mode_name = m_initialization_mode == InitializationMode ::Initialize ? "Initialize"
|
|
: m_initialization_mode == InitializationMode::Set ? "Set"
|
|
: "InitializeOrSet";
|
|
auto mode_string = m_mode == EnvironmentMode::Lexical ? "Lexical" : "Variable";
|
|
return String::formatted("SetVariable env:{} init:{} {} ({})", mode_string, initialization_mode_name, m_identifier, executable.identifier_table->get(m_identifier));
|
|
}
|
|
|
|
String PutById::to_string_impl(Bytecode::Executable const& executable) const
|
|
{
|
|
return String::formatted("PutById base:{}, property:{} ({})", m_base, m_property, executable.identifier_table->get(m_property));
|
|
}
|
|
|
|
String GetById::to_string_impl(Bytecode::Executable const& executable) const
|
|
{
|
|
return String::formatted("GetById {} ({})", m_property, executable.identifier_table->get(m_property));
|
|
}
|
|
|
|
String Jump::to_string_impl(Bytecode::Executable const&) const
|
|
{
|
|
if (m_true_target.has_value())
|
|
return String::formatted("Jump {}", *m_true_target);
|
|
return String::formatted("Jump <empty>");
|
|
}
|
|
|
|
String JumpConditional::to_string_impl(Bytecode::Executable const&) const
|
|
{
|
|
auto true_string = m_true_target.has_value() ? String::formatted("{}", *m_true_target) : "<empty>";
|
|
auto false_string = m_false_target.has_value() ? String::formatted("{}", *m_false_target) : "<empty>";
|
|
return String::formatted("JumpConditional true:{} false:{}", true_string, false_string);
|
|
}
|
|
|
|
String JumpNullish::to_string_impl(Bytecode::Executable const&) const
|
|
{
|
|
auto true_string = m_true_target.has_value() ? String::formatted("{}", *m_true_target) : "<empty>";
|
|
auto false_string = m_false_target.has_value() ? String::formatted("{}", *m_false_target) : "<empty>";
|
|
return String::formatted("JumpNullish null:{} nonnull:{}", true_string, false_string);
|
|
}
|
|
|
|
String JumpUndefined::to_string_impl(Bytecode::Executable const&) const
|
|
{
|
|
auto true_string = m_true_target.has_value() ? String::formatted("{}", *m_true_target) : "<empty>";
|
|
auto false_string = m_false_target.has_value() ? String::formatted("{}", *m_false_target) : "<empty>";
|
|
return String::formatted("JumpUndefined undefined:{} not undefined:{}", true_string, false_string);
|
|
}
|
|
|
|
String Call::to_string_impl(Bytecode::Executable const&) const
|
|
{
|
|
StringBuilder builder;
|
|
builder.appendff("Call callee:{}, this:{}", m_callee, m_this_value);
|
|
if (m_argument_count != 0) {
|
|
builder.append(", arguments:[");
|
|
for (size_t i = 0; i < m_argument_count; ++i) {
|
|
builder.appendff("{}", m_arguments[i]);
|
|
if (i != m_argument_count - 1)
|
|
builder.append(',');
|
|
}
|
|
builder.append(']');
|
|
}
|
|
return builder.to_string();
|
|
}
|
|
|
|
String NewFunction::to_string_impl(Bytecode::Executable const&) const
|
|
{
|
|
return "NewFunction";
|
|
}
|
|
|
|
String NewClass::to_string_impl(Bytecode::Executable const&) const
|
|
{
|
|
return "NewClass";
|
|
}
|
|
|
|
String Return::to_string_impl(Bytecode::Executable const&) const
|
|
{
|
|
return "Return";
|
|
}
|
|
|
|
String Increment::to_string_impl(Bytecode::Executable const&) const
|
|
{
|
|
return "Increment";
|
|
}
|
|
|
|
String Decrement::to_string_impl(Bytecode::Executable const&) const
|
|
{
|
|
return "Decrement";
|
|
}
|
|
|
|
String Throw::to_string_impl(Bytecode::Executable const&) const
|
|
{
|
|
return "Throw";
|
|
}
|
|
|
|
String EnterUnwindContext::to_string_impl(Bytecode::Executable const&) const
|
|
{
|
|
auto handler_string = m_handler_target.has_value() ? String::formatted("{}", *m_handler_target) : "<empty>";
|
|
auto finalizer_string = m_finalizer_target.has_value() ? String::formatted("{}", *m_finalizer_target) : "<empty>";
|
|
return String::formatted("EnterUnwindContext handler:{} finalizer:{} entry:{}", handler_string, finalizer_string, m_entry_point);
|
|
}
|
|
|
|
String FinishUnwind::to_string_impl(const Bytecode::Executable&) const
|
|
{
|
|
return String::formatted("FinishUnwind next:{}", m_next_target);
|
|
}
|
|
|
|
String LeaveEnvironment::to_string_impl(Bytecode::Executable const&) const
|
|
{
|
|
auto mode_string = m_mode == EnvironmentMode::Lexical
|
|
? "Lexical"
|
|
: "Variable";
|
|
return String::formatted("LeaveEnvironment env:{}", mode_string);
|
|
}
|
|
|
|
String LeaveUnwindContext::to_string_impl(Bytecode::Executable const&) const
|
|
{
|
|
return "LeaveUnwindContext";
|
|
}
|
|
|
|
String ContinuePendingUnwind::to_string_impl(Bytecode::Executable const&) const
|
|
{
|
|
return String::formatted("ContinuePendingUnwind resume:{}", m_resume_target);
|
|
}
|
|
|
|
String PushDeclarativeEnvironment::to_string_impl(const Bytecode::Executable& executable) const
|
|
{
|
|
StringBuilder builder;
|
|
builder.append("PushDeclarativeEnvironment");
|
|
if (!m_variables.is_empty()) {
|
|
builder.append(" {");
|
|
Vector<String> names;
|
|
for (auto& it : m_variables)
|
|
names.append(executable.get_string(it.key));
|
|
builder.join(", ", names);
|
|
builder.append("}");
|
|
}
|
|
return builder.to_string();
|
|
}
|
|
|
|
String Yield::to_string_impl(Bytecode::Executable const&) const
|
|
{
|
|
if (m_continuation_label.has_value())
|
|
return String::formatted("Yield continuation:@{}", m_continuation_label->block().name());
|
|
return String::formatted("Yield return");
|
|
}
|
|
|
|
String GetByValue::to_string_impl(const Bytecode::Executable&) const
|
|
{
|
|
return String::formatted("GetByValue base:{}", m_base);
|
|
}
|
|
|
|
String PutByValue::to_string_impl(const Bytecode::Executable&) const
|
|
{
|
|
return String::formatted("PutByValue base:{}, property:{}", m_base, m_property);
|
|
}
|
|
|
|
String GetIterator::to_string_impl(Executable const&) const
|
|
{
|
|
return "GetIterator";
|
|
}
|
|
|
|
String IteratorNext::to_string_impl(Executable const&) const
|
|
{
|
|
return "IteratorNext";
|
|
}
|
|
|
|
String IteratorResultDone::to_string_impl(Executable const&) const
|
|
{
|
|
return "IteratorResultDone";
|
|
}
|
|
|
|
String IteratorResultValue::to_string_impl(Executable const&) const
|
|
{
|
|
return "IteratorResultValue";
|
|
}
|
|
|
|
String ResolveThisBinding::to_string_impl(Bytecode::Executable const&) const
|
|
{
|
|
return "ResolveThisBinding"sv;
|
|
}
|
|
|
|
}
|