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/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <AK/String.h>
#include <LibJS/Runtime/PropertyName.h>
#include <LibJS/Runtime/Value.h>
namespace JS {
class Reference {
public:
Reference() { }
Reference(Value base, const PropertyName& name, bool strict = false)
: m_base(base)
, m_name(name)
, m_strict(strict)
{
}
enum LocalVariableTag { LocalVariable };
Reference(LocalVariableTag, const String& name, bool strict = false)
: m_base(js_null())
, m_name(name)
, m_strict(strict)
, m_local_variable(true)
{
}
enum GlobalVariableTag { GlobalVariable };
Reference(GlobalVariableTag, const String& name, bool strict = false)
: m_base(js_null())
, m_name(name)
, m_strict(strict)
, m_global_variable(true)
{
}
Value base() const { return m_base; }
const PropertyName& name() const { return m_name; }
bool is_strict() const { return m_strict; }
bool is_unresolvable() const { return m_base.is_undefined(); }
bool is_property() const
{
return m_base.is_object() || has_primitive_base();
}
bool has_primitive_base() const
{
return m_base.is_boolean() || m_base.is_string() || m_base.is_number();
}
bool is_local_variable() const
{
return m_local_variable;
}
bool is_global_variable() const
{
return m_global_variable;
}
void put(GlobalObject&, Value);
Value get(GlobalObject&);
private:
void throw_reference_error(GlobalObject&);
Value m_base { js_undefined() };
PropertyName m_name;
bool m_strict { false };
bool m_local_variable { false };
bool m_global_variable { false };
};
}
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