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