/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
#pragma once

#if ENABLE(DFG_JIT)

#include "Identifier.h"

namespace JSC {

class CodeBlock;

namespace DFG {

class CommonData;

class DesiredIdentifiers {
public:
    DesiredIdentifiers();
    DesiredIdentifiers(CodeBlock*);
    ~DesiredIdentifiers();
    
    unsigned numberOfIdentifiers();
    unsigned ensure(UniquedStringImpl*);
    
    UniquedStringImpl* at(unsigned index) const;
    
    UniquedStringImpl* operator[](unsigned index) const { return at(index); }
    
    void reallyAdd(VM&, CommonData*);
    
private:
    CodeBlock* m_codeBlock;
    Vector<UniquedStringImpl*> m_addedIdentifiers;
    HashMap<UniquedStringImpl*, unsigned> m_identifierNumberForName;
    bool m_didProcessIdentifiers;
};

} } // namespace JSC::DFG

#endif // ENABLE(DFG_JIT)