ladybird/Libraries/LibJS/Runtime/LexicalEnvironment.cpp

/*
 * 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.
 */

#include <LibJS/Runtime/LexicalEnvironment.h>

namespace JS {

LexicalEnvironment::LexicalEnvironment()
{
}

LexicalEnvironment::LexicalEnvironment(HashMap<FlyString, Variable> variables, LexicalEnvironment* parent)
    : m_parent(parent)
    , m_variables(move(variables))
{
}

LexicalEnvironment::~LexicalEnvironment()
{
}

void LexicalEnvironment::visit_children(Visitor& visitor)
{
    Cell::visit_children(visitor);
    visitor.visit(m_parent);
    for (auto& it : m_variables)
        visitor.visit(it.value.value);
}

Optional<Variable> LexicalEnvironment::get(const FlyString& name) const
{
    return m_variables.get(name);
}

void LexicalEnvironment::set(const FlyString& name, Variable variable)
{
    m_variables.set(name, variable);
}

}