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/*
* Copyright (C) 2012 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 JSStringJoiner_h
#define JSStringJoiner_h
#include "JSValue.h"
#include <wtf/Vector.h>
#include <wtf/text/WTFString.h>
namespace JSC {
class ExecState;
class JSStringJoiner {
public:
JSStringJoiner(const String& separator, size_t stringCount);
void append(const String&);
JSValue build(ExecState*);
private:
String m_separator;
Vector<String> m_strings;
unsigned m_cumulatedStringsLength;
bool m_isValid;
bool m_is8Bits;
};
inline JSStringJoiner::JSStringJoiner(const String& separator, size_t stringCount)
: m_separator(separator)
, m_cumulatedStringsLength(0)
, m_isValid(true)
, m_is8Bits(m_separator.is8Bit())
{
ASSERT(!m_separator.isNull());
m_isValid = m_strings.tryReserveCapacity(stringCount);
}
inline void JSStringJoiner::append(const String& str)
{
if (!m_isValid)
return;
m_strings.uncheckedAppend(str);
if (!str.isNull()) {
m_cumulatedStringsLength += str.length();
m_is8Bits = m_is8Bits && str.is8Bit();
}
}
}
#endif
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