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| 1 /* | |
| 2 * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights
reserved. | |
| 3 * Copyright (C) Research In Motion Limited 2011. All rights reserved. | |
| 4 * | |
| 5 * This library is free software; you can redistribute it and/or | |
| 6 * modify it under the terms of the GNU Library General Public | |
| 7 * License as published by the Free Software Foundation; either | |
| 8 * version 2 of the License, or (at your option) any later version. | |
| 9 * | |
| 10 * This library is distributed in the hope that it will be useful, | |
| 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 * Library General Public License for more details. | |
| 14 * | |
| 15 * You should have received a copy of the GNU Library General Public License | |
| 16 * along with this library; see the file COPYING.LIB. If not, write to | |
| 17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | |
| 18 * Boston, MA 02110-1301, USA. | |
| 19 * | |
| 20 */ | |
| 21 | |
| 22 #ifndef StringOperators_h | |
| 23 #define StringOperators_h | |
| 24 | |
| 25 namespace WTF { | |
| 26 | |
| 27 template<typename StringType1, typename StringType2> | |
| 28 class StringAppend { | |
| 29 public: | |
| 30 StringAppend(StringType1 string1, StringType2 string2) | |
| 31 : m_string1(string1) | |
| 32 , m_string2(string2) | |
| 33 { | |
| 34 } | |
| 35 | |
| 36 operator String() const | |
| 37 { | |
| 38 RefPtr<StringImpl> resultImpl = tryMakeString(m_string1, m_string2); | |
| 39 RELEASE_ASSERT(resultImpl); | |
| 40 return resultImpl.release(); | |
| 41 } | |
| 42 | |
| 43 operator AtomicString() const | |
| 44 { | |
| 45 return operator String(); | |
| 46 } | |
| 47 | |
| 48 bool is8Bit() | |
| 49 { | |
| 50 StringTypeAdapter<StringType1> adapter1(m_string1); | |
| 51 StringTypeAdapter<StringType2> adapter2(m_string2); | |
| 52 return adapter1.is8Bit() && adapter2.is8Bit(); | |
| 53 } | |
| 54 | |
| 55 void writeTo(LChar* destination) | |
| 56 { | |
| 57 ASSERT(is8Bit()); | |
| 58 StringTypeAdapter<StringType1> adapter1(m_string1); | |
| 59 StringTypeAdapter<StringType2> adapter2(m_string2); | |
| 60 adapter1.writeTo(destination); | |
| 61 adapter2.writeTo(destination + adapter1.length()); | |
| 62 } | |
| 63 | |
| 64 void writeTo(UChar* destination) | |
| 65 { | |
| 66 StringTypeAdapter<StringType1> adapter1(m_string1); | |
| 67 StringTypeAdapter<StringType2> adapter2(m_string2); | |
| 68 adapter1.writeTo(destination); | |
| 69 adapter2.writeTo(destination + adapter1.length()); | |
| 70 } | |
| 71 | |
| 72 unsigned length() | |
| 73 { | |
| 74 StringTypeAdapter<StringType1> adapter1(m_string1); | |
| 75 StringTypeAdapter<StringType2> adapter2(m_string2); | |
| 76 return adapter1.length() + adapter2.length(); | |
| 77 } | |
| 78 | |
| 79 private: | |
| 80 StringType1 m_string1; | |
| 81 StringType2 m_string2; | |
| 82 }; | |
| 83 | |
| 84 template<typename StringType1, typename StringType2> | |
| 85 class StringTypeAdapter<StringAppend<StringType1, StringType2> > { | |
| 86 public: | |
| 87 StringTypeAdapter<StringAppend<StringType1, StringType2> >(StringAppend<Stri
ngType1, StringType2>& buffer) | |
| 88 : m_buffer(buffer) | |
| 89 { | |
| 90 } | |
| 91 | |
| 92 unsigned length() { return m_buffer.length(); } | |
| 93 | |
| 94 bool is8Bit() { return m_buffer.is8Bit(); } | |
| 95 | |
| 96 void writeTo(LChar* destination) { m_buffer.writeTo(destination); } | |
| 97 void writeTo(UChar* destination) { m_buffer.writeTo(destination); } | |
| 98 | |
| 99 private: | |
| 100 StringAppend<StringType1, StringType2>& m_buffer; | |
| 101 }; | |
| 102 | |
| 103 inline StringAppend<const char*, String> operator+(const char* string1, const St
ring& string2) | |
| 104 { | |
| 105 return StringAppend<const char*, String>(string1, string2); | |
| 106 } | |
| 107 | |
| 108 inline StringAppend<const char*, AtomicString> operator+(const char* string1, co
nst AtomicString& string2) | |
| 109 { | |
| 110 return StringAppend<const char*, AtomicString>(string1, string2); | |
| 111 } | |
| 112 | |
| 113 template<typename U, typename V> | |
| 114 inline StringAppend<const char*, StringAppend<U, V> > operator+(const char* stri
ng1, const StringAppend<U, V>& string2) | |
| 115 { | |
| 116 return StringAppend<const char*, StringAppend<U, V> >(string1, string2); | |
| 117 } | |
| 118 | |
| 119 inline StringAppend<const UChar*, String> operator+(const UChar* string1, const
String& string2) | |
| 120 { | |
| 121 return StringAppend<const UChar*, String>(string1, string2); | |
| 122 } | |
| 123 | |
| 124 inline StringAppend<const UChar*, AtomicString> operator+(const UChar* string1,
const AtomicString& string2) | |
| 125 { | |
| 126 return StringAppend<const UChar*, AtomicString>(string1, string2); | |
| 127 } | |
| 128 | |
| 129 template<typename U, typename V> | |
| 130 inline StringAppend<const UChar*, StringAppend<U, V> > operator+(const UChar* st
ring1, const StringAppend<U, V>& string2) | |
| 131 { | |
| 132 return StringAppend<const UChar*, StringAppend<U, V> >(string1, string2); | |
| 133 } | |
| 134 | |
| 135 inline StringAppend<ASCIILiteral, String> operator+(const ASCIILiteral& string1,
const String& string2) | |
| 136 { | |
| 137 return StringAppend<ASCIILiteral, String>(string1, string2); | |
| 138 } | |
| 139 | |
| 140 inline StringAppend<ASCIILiteral, AtomicString> operator+(const ASCIILiteral& st
ring1, const AtomicString& string2) | |
| 141 { | |
| 142 return StringAppend<ASCIILiteral, AtomicString>(string1, string2); | |
| 143 } | |
| 144 | |
| 145 template<typename U, typename V> | |
| 146 inline StringAppend<ASCIILiteral, StringAppend<U, V> > operator+(const ASCIILite
ral& string1, const StringAppend<U, V>& string2) | |
| 147 { | |
| 148 return StringAppend<ASCIILiteral, StringAppend<U, V> >(string1, string2); | |
| 149 } | |
| 150 | |
| 151 template<typename T> | |
| 152 StringAppend<String, T> operator+(const String& string1, T string2) | |
| 153 { | |
| 154 return StringAppend<String, T>(string1, string2); | |
| 155 } | |
| 156 | |
| 157 template<typename U, typename V, typename W> | |
| 158 StringAppend<StringAppend<U, V>, W> operator+(const StringAppend<U, V>& string1,
W string2) | |
| 159 { | |
| 160 return StringAppend<StringAppend<U, V>, W>(string1, string2); | |
| 161 } | |
| 162 | |
| 163 } // namespace WTF | |
| 164 | |
| 165 #endif // StringOperators_h | |
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