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/*
* Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
* Copyright (C) Research In Motion Limited 2011. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#ifndef StringOperators_h
#define StringOperators_h
namespace WTF {
template<typename StringType1, typename StringType2>
class StringAppend {
public:
StringAppend(StringType1 string1, StringType2 string2)
: m_string1(string1)
, m_string2(string2)
{
}
operator String() const
{
String result = tryMakeString(m_string1, m_string2);
if (!result)
CRASH();
return result;
}
operator AtomicString() const
{
return operator String();
}
bool is8Bit()
{
StringTypeAdapter<StringType1> adapter1(m_string1);
StringTypeAdapter<StringType2> adapter2(m_string2);
return adapter1.is8Bit() && adapter2.is8Bit();
}
void writeTo(LChar* destination)
{
ASSERT(is8Bit());
StringTypeAdapter<StringType1> adapter1(m_string1);
StringTypeAdapter<StringType2> adapter2(m_string2);
adapter1.writeTo(destination);
adapter2.writeTo(destination + adapter1.length());
}
void writeTo(UChar* destination)
{
StringTypeAdapter<StringType1> adapter1(m_string1);
StringTypeAdapter<StringType2> adapter2(m_string2);
adapter1.writeTo(destination);
adapter2.writeTo(destination + adapter1.length());
}
unsigned length()
{
StringTypeAdapter<StringType1> adapter1(m_string1);
StringTypeAdapter<StringType2> adapter2(m_string2);
return adapter1.length() + adapter2.length();
}
private:
StringType1 m_string1;
StringType2 m_string2;
};
template<typename StringType1, typename StringType2>
class StringTypeAdapter<StringAppend<StringType1, StringType2>> {
public:
StringTypeAdapter<StringAppend<StringType1, StringType2>>(StringAppend<StringType1, StringType2>& buffer)
: m_buffer(buffer)
{
}
unsigned length() { return m_buffer.length(); }
bool is8Bit() { return m_buffer.is8Bit(); }
void writeTo(LChar* destination) { m_buffer.writeTo(destination); }
void writeTo(UChar* destination) { m_buffer.writeTo(destination); }
String toString() const { return m_buffer; }
private:
StringAppend<StringType1, StringType2>& m_buffer;
};
inline StringAppend<const char*, String> operator+(const char* string1, const String& string2)
{
return StringAppend<const char*, String>(string1, string2);
}
inline StringAppend<const char*, AtomicString> operator+(const char* string1, const AtomicString& string2)
{
return StringAppend<const char*, AtomicString>(string1, string2);
}
template<typename U, typename V>
inline StringAppend<const char*, StringAppend<U, V>> operator+(const char* string1, const StringAppend<U, V>& string2)
{
return StringAppend<const char*, StringAppend<U, V>>(string1, string2);
}
inline StringAppend<const UChar*, String> operator+(const UChar* string1, const String& string2)
{
return StringAppend<const UChar*, String>(string1, string2);
}
inline StringAppend<const UChar*, AtomicString> operator+(const UChar* string1, const AtomicString& string2)
{
return StringAppend<const UChar*, AtomicString>(string1, string2);
}
template<typename U, typename V>
inline StringAppend<const UChar*, StringAppend<U, V>> operator+(const UChar* string1, const StringAppend<U, V>& string2)
{
return StringAppend<const UChar*, StringAppend<U, V>>(string1, string2);
}
inline StringAppend<ASCIILiteral, String> operator+(const ASCIILiteral& string1, const String& string2)
{
return StringAppend<ASCIILiteral, String>(string1, string2);
}
inline StringAppend<ASCIILiteral, AtomicString> operator+(const ASCIILiteral& string1, const AtomicString& string2)
{
return StringAppend<ASCIILiteral, AtomicString>(string1, string2);
}
template<typename U, typename V>
inline StringAppend<ASCIILiteral, StringAppend<U, V>> operator+(const ASCIILiteral& string1, const StringAppend<U, V>& string2)
{
return StringAppend<ASCIILiteral, StringAppend<U, V>>(string1, string2);
}
template<typename T>
StringAppend<String, T> operator+(const String& string1, T string2)
{
return StringAppend<String, T>(string1, string2);
}
template<typename U, typename V, typename W>
StringAppend<StringAppend<U, V>, W> operator+(const StringAppend<U, V>& string1, W string2)
{
return StringAppend<StringAppend<U, V>, W>(string1, string2);
}
} // namespace WTF
#endif // StringOperators_h
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