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.
129 lines
4.1 KiB
C++
129 lines
4.1 KiB
C++
/*
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* Copyright (c) 2020, Andreas Kling <kling@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 <LibJS/Runtime/Error.h>
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#include <LibJS/Runtime/GlobalObject.h>
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#include <LibJS/Runtime/Reference.h>
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namespace JS {
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void Reference::put(GlobalObject& global_object, Value value)
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{
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auto& vm = global_object.vm();
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if (is_unresolvable()) {
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throw_reference_error(global_object);
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return;
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}
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if (is_local_variable() || is_global_variable()) {
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if (is_local_variable())
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vm.set_variable(m_name.to_string(), value, global_object);
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else
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global_object.put(m_name, value);
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return;
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}
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auto base = this->base();
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if (!base.is_object() && vm.in_strict_mode()) {
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if (base.is_nullish())
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vm.throw_exception<TypeError>(global_object, ErrorType::ReferenceNullishSetProperty, m_name.to_value(vm).to_string_without_side_effects(), base.to_string_without_side_effects());
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else
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vm.throw_exception<TypeError>(global_object, ErrorType::ReferencePrimitiveSetProperty, m_name.to_value(vm).to_string_without_side_effects(), base.typeof(), base.to_string_without_side_effects());
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return;
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}
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if (base.is_nullish()) {
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// This will always fail the to_object() call below, let's throw the TypeError ourselves with a nice message instead.
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vm.throw_exception<TypeError>(global_object, ErrorType::ReferenceNullishSetProperty, m_name.to_value(vm).to_string_without_side_effects(), base.to_string_without_side_effects());
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return;
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}
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auto* object = base.to_object(global_object);
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if (!object)
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return;
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object->put(m_name, value);
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}
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void Reference::throw_reference_error(GlobalObject& global_object)
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{
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auto& vm = global_object.vm();
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if (!m_name.is_valid())
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vm.throw_exception<ReferenceError>(global_object, ErrorType::ReferenceUnresolvable);
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else
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vm.throw_exception<ReferenceError>(global_object, ErrorType::UnknownIdentifier, m_name.to_string_or_symbol().to_display_string());
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}
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Value Reference::get(GlobalObject& global_object)
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{
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auto& vm = global_object.vm();
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if (is_unresolvable()) {
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throw_reference_error(global_object);
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return {};
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}
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if (is_local_variable() || is_global_variable()) {
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Value value;
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if (is_local_variable())
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value = vm.get_variable(m_name.to_string(), global_object);
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else
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value = global_object.get(m_name);
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if (vm.exception())
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return {};
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if (value.is_empty()) {
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throw_reference_error(global_object);
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return {};
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}
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return value;
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}
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auto base = this->base();
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if (base.is_nullish()) {
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// This will always fail the to_object() call below, let's throw the TypeError ourselves with a nice message instead.
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vm.throw_exception<TypeError>(global_object, ErrorType::ReferenceNullishGetProperty, m_name.to_value(vm).to_string_without_side_effects(), base.to_string_without_side_effects());
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return {};
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}
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auto* object = base.to_object(global_object);
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if (!object)
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return {};
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return object->get(m_name).value_or(js_undefined());
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}
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bool Reference::delete_(GlobalObject& global_object)
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{
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if (is_unresolvable())
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return true;
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auto& vm = global_object.vm();
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if (is_local_variable() || is_global_variable()) {
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if (is_local_variable())
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return vm.delete_variable(m_name.to_string());
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else
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return global_object.delete_property(m_name);
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}
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auto base = this->base();
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if (base.is_nullish()) {
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// This will always fail the to_object() call below, let's throw the TypeError ourselves with a nice message instead.
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vm.throw_exception<TypeError>(global_object, ErrorType::ReferenceNullishDeleteProperty, m_name.to_value(vm).to_string_without_side_effects(), base.to_string_without_side_effects());
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return false;
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}
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auto* object = base.to_object(global_object);
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VERIFY(object);
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return object->delete_property(m_name);
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}
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}
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