8a3c9d9851
The parser doesn't always track lexical scopes correctly, so let's not rely on that for direct argument loading. This reverts the LoadArguments bytecode instruction as well. We can bring these things back when the parser can reliably tell us that a given Identifier is indeed a function argument.
690 lines
24 KiB
C++
690 lines
24 KiB
C++
/*
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* Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2021, Linus Groh <linusg@serenityos.org>
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* Copyright (c) 2021, Gunnar Beutner <gbeutner@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/HashTable.h>
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#include <LibJS/AST.h>
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#include <LibJS/Bytecode/Interpreter.h>
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#include <LibJS/Bytecode/Op.h>
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#include <LibJS/Runtime/Array.h>
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#include <LibJS/Runtime/BigInt.h>
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#include <LibJS/Runtime/DeclarativeEnvironmentRecord.h>
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#include <LibJS/Runtime/EnvironmentRecord.h>
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#include <LibJS/Runtime/GlobalObject.h>
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#include <LibJS/Runtime/IteratorOperations.h>
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#include <LibJS/Runtime/RegExpObject.h>
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#include <LibJS/Runtime/ScriptFunction.h>
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#include <LibJS/Runtime/Value.h>
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namespace JS::Bytecode {
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String Instruction::to_string(Bytecode::Executable const& executable) const
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{
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#define __BYTECODE_OP(op) \
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case Instruction::Type::op: \
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return static_cast<Bytecode::Op::op const&>(*this).to_string_impl(executable);
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switch (type()) {
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ENUMERATE_BYTECODE_OPS(__BYTECODE_OP)
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default:
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VERIFY_NOT_REACHED();
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}
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#undef __BYTECODE_OP
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}
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}
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namespace JS::Bytecode::Op {
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void Load::execute_impl(Bytecode::Interpreter& interpreter) const
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{
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interpreter.accumulator() = interpreter.reg(m_src);
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}
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void LoadImmediate::execute_impl(Bytecode::Interpreter& interpreter) const
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{
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interpreter.accumulator() = m_value;
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}
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void Store::execute_impl(Bytecode::Interpreter& interpreter) const
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{
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interpreter.reg(m_dst) = interpreter.accumulator();
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}
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static Value abstract_inequals(GlobalObject& global_object, Value src1, Value src2)
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{
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return Value(!abstract_eq(global_object, src1, src2));
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}
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static Value abstract_equals(GlobalObject& global_object, Value src1, Value src2)
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{
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return Value(abstract_eq(global_object, src1, src2));
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}
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static Value typed_inequals(GlobalObject&, Value src1, Value src2)
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{
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return Value(!strict_eq(src1, src2));
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}
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static Value typed_equals(GlobalObject&, Value src1, Value src2)
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{
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return Value(strict_eq(src1, src2));
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}
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#define JS_DEFINE_COMMON_BINARY_OP(OpTitleCase, op_snake_case) \
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void OpTitleCase::execute_impl(Bytecode::Interpreter& interpreter) const \
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{ \
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auto lhs = interpreter.reg(m_lhs_reg); \
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auto rhs = interpreter.accumulator(); \
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interpreter.accumulator() = op_snake_case(interpreter.global_object(), lhs, rhs); \
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} \
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String OpTitleCase::to_string_impl(Bytecode::Executable const&) const \
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{ \
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return String::formatted(#OpTitleCase " {}", m_lhs_reg); \
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}
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JS_ENUMERATE_COMMON_BINARY_OPS(JS_DEFINE_COMMON_BINARY_OP)
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static Value not_(GlobalObject&, Value value)
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{
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return Value(!value.to_boolean());
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}
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static Value typeof_(GlobalObject& global_object, Value value)
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{
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return js_string(global_object.vm(), value.typeof());
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}
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#define JS_DEFINE_COMMON_UNARY_OP(OpTitleCase, op_snake_case) \
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void OpTitleCase::execute_impl(Bytecode::Interpreter& interpreter) const \
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{ \
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interpreter.accumulator() = op_snake_case(interpreter.global_object(), interpreter.accumulator()); \
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} \
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String OpTitleCase::to_string_impl(Bytecode::Executable const&) const \
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{ \
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return #OpTitleCase; \
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}
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JS_ENUMERATE_COMMON_UNARY_OPS(JS_DEFINE_COMMON_UNARY_OP)
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void NewBigInt::execute_impl(Bytecode::Interpreter& interpreter) const
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{
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interpreter.accumulator() = js_bigint(interpreter.vm().heap(), m_bigint);
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}
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void NewArray::execute_impl(Bytecode::Interpreter& interpreter) const
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{
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Vector<Value> elements;
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elements.ensure_capacity(m_element_count);
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for (size_t i = 0; i < m_element_count; i++)
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elements.append(interpreter.reg(m_elements[i]));
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interpreter.accumulator() = Array::create_from(interpreter.global_object(), elements);
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}
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void IteratorToArray::execute_impl(Bytecode::Interpreter& interpreter) const
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{
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auto& global_object = interpreter.global_object();
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auto& vm = interpreter.vm();
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auto iterator = interpreter.accumulator().to_object(global_object);
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if (vm.exception())
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return;
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auto array = Array::create(global_object);
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size_t index = 0;
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while (true) {
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auto iterator_result = iterator_next(*iterator);
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if (!iterator_result)
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return;
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auto complete = iterator_complete(global_object, *iterator_result);
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if (vm.exception())
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return;
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if (complete) {
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interpreter.accumulator() = array;
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return;
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}
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auto value = iterator_value(global_object, *iterator_result);
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if (vm.exception())
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return;
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array->put(index, value);
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index++;
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}
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}
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void NewString::execute_impl(Bytecode::Interpreter& interpreter) const
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{
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interpreter.accumulator() = js_string(interpreter.vm(), interpreter.current_executable().get_string(m_string));
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}
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void NewObject::execute_impl(Bytecode::Interpreter& interpreter) const
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{
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interpreter.accumulator() = Object::create(interpreter.global_object(), interpreter.global_object().object_prototype());
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}
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void NewRegExp::execute_impl(Bytecode::Interpreter& interpreter) const
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{
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auto source = interpreter.current_executable().get_string(m_source_index);
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auto flags = interpreter.current_executable().get_string(m_flags_index);
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interpreter.accumulator() = RegExpObject::create(interpreter.global_object(), source, flags);
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}
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void CopyObjectExcludingProperties::execute_impl(Bytecode::Interpreter& interpreter) const
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{
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auto* from_object = interpreter.reg(m_from_object).to_object(interpreter.global_object());
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if (interpreter.vm().exception())
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return;
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auto* to_object = Object::create(interpreter.global_object(), interpreter.global_object().object_prototype());
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HashTable<Value, ValueTraits> excluded_names;
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for (size_t i = 0; i < m_excluded_names_count; ++i) {
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excluded_names.set(interpreter.reg(m_excluded_names[i]));
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if (interpreter.vm().exception())
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return;
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}
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auto own_keys = from_object->get_own_properties(Object::PropertyKind::Key, true);
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for (auto& key : own_keys) {
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if (!excluded_names.contains(key)) {
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auto property_name = PropertyName(key.to_property_key(interpreter.global_object()));
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auto property_value = from_object->get(property_name);
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if (interpreter.vm().exception())
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return;
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to_object->define_property(property_name, property_value);
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}
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}
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interpreter.accumulator() = to_object;
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}
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void ConcatString::execute_impl(Bytecode::Interpreter& interpreter) const
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{
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interpreter.reg(m_lhs) = add(interpreter.global_object(), interpreter.reg(m_lhs), interpreter.accumulator());
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}
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void GetVariable::execute_impl(Bytecode::Interpreter& interpreter) const
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{
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interpreter.accumulator() = interpreter.vm().get_variable(interpreter.current_executable().get_string(m_identifier), interpreter.global_object());
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}
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void SetVariable::execute_impl(Bytecode::Interpreter& interpreter) const
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{
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interpreter.vm().set_variable(interpreter.current_executable().get_string(m_identifier), interpreter.accumulator(), interpreter.global_object());
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}
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void GetById::execute_impl(Bytecode::Interpreter& interpreter) const
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{
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if (auto* object = interpreter.accumulator().to_object(interpreter.global_object()))
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interpreter.accumulator() = object->get(interpreter.current_executable().get_string(m_property)).value_or(js_undefined());
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}
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void PutById::execute_impl(Bytecode::Interpreter& interpreter) const
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{
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if (auto* object = interpreter.reg(m_base).to_object(interpreter.global_object()))
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object->put(interpreter.current_executable().get_string(m_property), interpreter.accumulator());
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}
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void Jump::execute_impl(Bytecode::Interpreter& interpreter) const
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{
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interpreter.jump(*m_true_target);
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}
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void Jump::replace_references_impl(BasicBlock const& from, BasicBlock const& to)
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{
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if (m_true_target.has_value() && &m_true_target->block() == &from)
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m_true_target = Label { to };
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if (m_false_target.has_value() && &m_false_target->block() == &from)
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m_false_target = Label { to };
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}
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void JumpConditional::execute_impl(Bytecode::Interpreter& interpreter) const
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{
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VERIFY(m_true_target.has_value());
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VERIFY(m_false_target.has_value());
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auto result = interpreter.accumulator();
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if (result.to_boolean())
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interpreter.jump(m_true_target.value());
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else
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interpreter.jump(m_false_target.value());
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}
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void JumpNullish::execute_impl(Bytecode::Interpreter& interpreter) const
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{
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VERIFY(m_true_target.has_value());
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VERIFY(m_false_target.has_value());
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auto result = interpreter.accumulator();
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if (result.is_nullish())
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interpreter.jump(m_true_target.value());
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else
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interpreter.jump(m_false_target.value());
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}
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void JumpUndefined::execute_impl(Bytecode::Interpreter& interpreter) const
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{
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VERIFY(m_true_target.has_value());
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VERIFY(m_false_target.has_value());
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auto result = interpreter.accumulator();
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if (result.is_undefined())
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interpreter.jump(m_true_target.value());
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else
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interpreter.jump(m_false_target.value());
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}
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void Call::execute_impl(Bytecode::Interpreter& interpreter) const
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{
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auto callee = interpreter.reg(m_callee);
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if (!callee.is_function()) {
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TODO();
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}
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auto& function = callee.as_function();
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auto this_value = interpreter.reg(m_this_value);
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Value return_value;
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if (m_argument_count == 0 && m_type == CallType::Call) {
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return_value = interpreter.vm().call(function, this_value);
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} else {
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MarkedValueList argument_values { interpreter.vm().heap() };
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for (size_t i = 0; i < m_argument_count; ++i) {
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argument_values.append(interpreter.reg(m_arguments[i]));
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}
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if (m_type == CallType::Call)
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return_value = interpreter.vm().call(function, this_value, move(argument_values));
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else
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return_value = interpreter.vm().construct(function, function, move(argument_values));
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}
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interpreter.accumulator() = return_value;
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}
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void NewFunction::execute_impl(Bytecode::Interpreter& interpreter) const
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{
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auto& vm = interpreter.vm();
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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.lexical_environment(), m_function_node.kind(), m_function_node.is_strict_mode(), m_function_node.is_arrow_function());
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}
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void Return::execute_impl(Bytecode::Interpreter& interpreter) const
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{
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interpreter.do_return(interpreter.accumulator().value_or(js_undefined()));
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}
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void Increment::execute_impl(Bytecode::Interpreter& interpreter) const
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{
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auto old_value = interpreter.accumulator().to_numeric(interpreter.global_object());
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if (interpreter.vm().exception())
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return;
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if (old_value.is_number())
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interpreter.accumulator() = Value(old_value.as_double() + 1);
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else
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interpreter.accumulator() = js_bigint(interpreter.vm().heap(), old_value.as_bigint().big_integer().plus(Crypto::SignedBigInteger { 1 }));
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}
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void Decrement::execute_impl(Bytecode::Interpreter& interpreter) const
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{
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auto old_value = interpreter.accumulator().to_numeric(interpreter.global_object());
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if (interpreter.vm().exception())
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return;
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if (old_value.is_number())
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interpreter.accumulator() = Value(old_value.as_double() - 1);
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else
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interpreter.accumulator() = js_bigint(interpreter.vm().heap(), old_value.as_bigint().big_integer().minus(Crypto::SignedBigInteger { 1 }));
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}
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void Throw::execute_impl(Bytecode::Interpreter& interpreter) const
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{
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interpreter.vm().throw_exception(interpreter.global_object(), interpreter.accumulator());
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}
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void EnterUnwindContext::execute_impl(Bytecode::Interpreter& interpreter) const
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{
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interpreter.enter_unwind_context(m_handler_target, m_finalizer_target);
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interpreter.jump(m_entry_point);
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}
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void EnterUnwindContext::replace_references_impl(BasicBlock const& from, BasicBlock const& to)
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{
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if (&m_entry_point.block() == &from)
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m_entry_point = Label { to };
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if (m_handler_target.has_value() && &m_handler_target->block() == &from)
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m_handler_target = Label { to };
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if (m_finalizer_target.has_value() && &m_finalizer_target->block() == &from)
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m_finalizer_target = Label { to };
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}
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void LeaveUnwindContext::execute_impl(Bytecode::Interpreter& interpreter) const
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{
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interpreter.leave_unwind_context();
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}
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void ContinuePendingUnwind::execute_impl(Bytecode::Interpreter& interpreter) const
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{
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interpreter.continue_pending_unwind(m_resume_target);
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}
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void ContinuePendingUnwind::replace_references_impl(BasicBlock const& from, BasicBlock const& to)
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{
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if (&m_resume_target.block() == &from)
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m_resume_target = Label { to };
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}
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void PushDeclarativeEnvironmentRecord::execute_impl(Bytecode::Interpreter& interpreter) const
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{
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HashMap<FlyString, Variable> resolved_variables;
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for (auto& it : m_variables)
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resolved_variables.set(interpreter.current_executable().get_string(it.key), it.value);
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auto* environment_record = interpreter.vm().heap().allocate<DeclarativeEnvironmentRecord>(interpreter.global_object(), move(resolved_variables), interpreter.vm().lexical_environment());
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interpreter.vm().call_frame().lexical_environment = environment_record;
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interpreter.vm().call_frame().variable_environment = environment_record;
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}
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void Yield::execute_impl(Bytecode::Interpreter& interpreter) const
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{
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auto yielded_value = interpreter.accumulator().value_or(js_undefined());
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auto object = JS::Object::create(interpreter.global_object(), nullptr);
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object->put("result", yielded_value);
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if (m_continuation_label.has_value())
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object->put("continuation", Value(static_cast<double>(reinterpret_cast<u64>(&m_continuation_label->block()))));
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else
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object->put("continuation", Value(0));
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interpreter.do_return(object);
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}
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void Yield::replace_references_impl(BasicBlock const& from, BasicBlock const& to)
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{
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if (m_continuation_label.has_value() && &m_continuation_label->block() == &from)
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m_continuation_label = Label { to };
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}
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void GetByValue::execute_impl(Bytecode::Interpreter& interpreter) const
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{
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if (auto* object = interpreter.reg(m_base).to_object(interpreter.global_object())) {
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auto property_key = interpreter.accumulator().to_property_key(interpreter.global_object());
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if (interpreter.vm().exception())
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return;
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interpreter.accumulator() = object->get(property_key).value_or(js_undefined());
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}
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}
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void PutByValue::execute_impl(Bytecode::Interpreter& interpreter) const
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{
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if (auto* object = interpreter.reg(m_base).to_object(interpreter.global_object())) {
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auto property_key = interpreter.reg(m_property).to_property_key(interpreter.global_object());
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if (interpreter.vm().exception())
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return;
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object->put(property_key, interpreter.accumulator());
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}
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}
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void GetIterator::execute_impl(Bytecode::Interpreter& interpreter) const
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{
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interpreter.accumulator() = get_iterator(interpreter.global_object(), interpreter.accumulator());
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}
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void IteratorNext::execute_impl(Bytecode::Interpreter& interpreter) const
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{
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if (auto* object = interpreter.accumulator().to_object(interpreter.global_object()))
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interpreter.accumulator() = iterator_next(*object);
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}
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void IteratorResultDone::execute_impl(Bytecode::Interpreter& interpreter) const
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{
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if (auto* iterator_result = interpreter.accumulator().to_object(interpreter.global_object()))
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interpreter.accumulator() = Value(iterator_complete(interpreter.global_object(), *iterator_result));
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}
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void IteratorResultValue::execute_impl(Bytecode::Interpreter& interpreter) const
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{
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if (auto* iterator_result = interpreter.accumulator().to_object(interpreter.global_object()))
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interpreter.accumulator() = iterator_value(interpreter.global_object(), *iterator_result);
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}
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String Load::to_string_impl(Bytecode::Executable const&) const
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{
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return String::formatted("Load {}", m_src);
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}
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String LoadImmediate::to_string_impl(Bytecode::Executable const&) const
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{
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return String::formatted("LoadImmediate {}", m_value);
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}
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String Store::to_string_impl(Bytecode::Executable const&) const
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{
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return String::formatted("Store {}", m_dst);
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}
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String NewBigInt::to_string_impl(Bytecode::Executable const&) const
|
|
{
|
|
return String::formatted("NewBigInt \"{}\"", m_bigint.to_base10());
|
|
}
|
|
|
|
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.string_table->get(m_identifier));
|
|
}
|
|
|
|
String SetVariable::to_string_impl(Bytecode::Executable const& executable) const
|
|
{
|
|
return String::formatted("SetVariable {} ({})", m_identifier, executable.string_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.string_table->get(m_property));
|
|
}
|
|
|
|
String GetById::to_string_impl(Bytecode::Executable const& executable) const
|
|
{
|
|
return String::formatted("GetById {} ({})", m_property, executable.string_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 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 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 PushDeclarativeEnvironmentRecord::to_string_impl(const Bytecode::Executable& executable) const
|
|
{
|
|
StringBuilder builder;
|
|
builder.append("PushDeclarativeEnvironmentRecord");
|
|
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";
|
|
}
|
|
|
|
}
|