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.
82 lines
1.8 KiB
C++
82 lines
1.8 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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#pragma once
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#include <AK/String.h>
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#include <LibJS/Runtime/PropertyName.h>
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#include <LibJS/Runtime/Value.h>
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namespace JS {
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class Reference {
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public:
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Reference() { }
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Reference(Value base, const PropertyName& name, bool strict = false)
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: m_base(base)
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, m_name(name)
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, m_strict(strict)
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{
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}
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enum LocalVariableTag { LocalVariable };
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Reference(LocalVariableTag, const FlyString& name, bool strict = false)
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: m_base(js_null())
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, m_name(name)
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, m_strict(strict)
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, m_local_variable(true)
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{
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}
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enum GlobalVariableTag { GlobalVariable };
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Reference(GlobalVariableTag, const FlyString& name, bool strict = false)
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: m_base(js_null())
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, m_name(name)
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, m_strict(strict)
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, m_global_variable(true)
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{
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}
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Value base() const { return m_base; }
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const PropertyName& name() const { return m_name; }
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bool is_strict() const { return m_strict; }
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bool is_unresolvable() const { return m_base.is_empty(); }
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bool is_property() const
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{
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return m_base.is_object() || has_primitive_base();
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}
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bool has_primitive_base() const
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{
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return m_base.is_boolean() || m_base.is_string() || m_base.is_number();
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}
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bool is_local_variable() const
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{
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return m_local_variable;
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}
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bool is_global_variable() const
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{
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return m_global_variable;
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}
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void put(GlobalObject&, Value);
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Value get(GlobalObject&);
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bool delete_(GlobalObject&);
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private:
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void throw_reference_error(GlobalObject&);
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Value m_base;
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PropertyName m_name;
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bool m_strict { false };
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bool m_local_variable { false };
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bool m_global_variable { false };
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};
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}
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