/*

 * Copyright (C) 2009 Apple Inc. 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 APPLE INC. ``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 APPLE INC. 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. 

 */

#ifndef JSStringBuilder_h

#define JSStringBuilder_h

#include "ExceptionHelpers.h"

#include "JSString.h"

#include "Vector.h"

namespace JSC {

class JSStringBuilder {

public:

    JSStringBuilder()

        : m_okay(true)

    {

    }

    void append(const UChar u)

    {

        m_okay &= buffer.tryAppend(&u, 1);

    }

    void append(const char* str)

    {

        append(str, strlen(str));

    }

    void append(const char* str, size_t len)

    {

        m_okay &= buffer.tryReserveCapacity(buffer.size() + len);

        for (size_t i = 0; i < len; i++) {

            UChar u = static_cast<unsigned char>(str[i]);

            m_okay &= buffer.tryAppend(&u, 1);

        }

    }

    void append(const UChar* str, size_t len)

    {

        m_okay &= buffer.tryAppend(str, len);

    }

    void append(const UString& str)

    {

        m_okay &= buffer.tryAppend(str.data(), str.size());

    }

    JSValue build(ExecState* exec)

    {

        if (!m_okay)

            return throwOutOfMemoryError(exec);

        buffer.shrinkToFit();

        if (!buffer.data())

            return throwOutOfMemoryError(exec);

        return jsString(exec, UString::adopt(buffer));

    }

protected:

    Vector<UChar, 64> buffer;

    bool m_okay;

};

template<typename StringType1, typename StringType2>

inline JSValue jsMakeNontrivialString(ExecState* exec, StringType1 string1, StringType2 string2)

{

    PassRefPtr<UStringImpl> result = tryMakeString(string1, string2);

    if (!result)

        return throwOutOfMemoryError(exec);

    return jsNontrivialString(exec, result);

}

template<typename StringType1, typename StringType2, typename StringType3>

inline JSValue jsMakeNontrivialString(ExecState* exec, StringType1 string1, StringType2 string2, StringType3 string3)

{

    PassRefPtr<UStringImpl> result = tryMakeString(string1, string2, string3);

    if (!result)

        return throwOutOfMemoryError(exec);

    return jsNontrivialString(exec, result);

}

template<typename StringType1, typename StringType2, typename StringType3, typename StringType4>

inline JSValue jsMakeNontrivialString(ExecState* exec, StringType1 string1, StringType2 string2, StringType3 string3, StringType4 string4)

{

    PassRefPtr<UStringImpl> result = tryMakeString(string1, string2, string3, string4);

    if (!result)

        return throwOutOfMemoryError(exec);

    return jsNontrivialString(exec, result);

}

template<typename StringType1, typename StringType2, typename StringType3, typename StringType4, typename StringType5>

inline JSValue jsMakeNontrivialString(ExecState* exec, StringType1 string1, StringType2 string2, StringType3 string3, StringType4 string4, StringType5 string5)

{

    PassRefPtr<UStringImpl> result = tryMakeString(string1, string2, string3, string4, string5);

    if (!result)

        return throwOutOfMemoryError(exec);

    return jsNontrivialString(exec, result);

}

template<typename StringType1, typename StringType2, typename StringType3, typename StringType4, typename StringType5, typename StringType6>

inline JSValue jsMakeNontrivialString(ExecState* exec, StringType1 string1, StringType2 string2, StringType3 string3, StringType4 string4, StringType5 string5, StringType6 string6)

{

    PassRefPtr<UStringImpl> result = tryMakeString(string1, string2, string3, string4, string5, string6);

    if (!result)

        return throwOutOfMemoryError(exec);

    return jsNontrivialString(exec, result);

}

}

#endif