Move files in wtf/ to platform/wtf/ (Part 9).

third_party/WebKit/Source/wtf/text/StringOperators.h

-/*
- * 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.
- *
- */
+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
 
-#ifndef StringOperators_h
-#define StringOperators_h
+#include "platform/wtf/text/StringOperators.h"
 
-#include "wtf/Allocator.h"
-#include "wtf/text/StringConcatenate.h"
-
-namespace WTF {
-
-template <typename StringType1, typename StringType2>
-class StringAppend final {
-  STACK_ALLOCATED();
-
- public:
-  StringAppend(StringType1 string1, StringType2 string2);
-
-  operator String() const;
-  operator AtomicString() const;
-
-  unsigned length() const;
-  bool is8Bit() const;
-
-  void writeTo(LChar* destination) const;
-  void writeTo(UChar* destination) const;
-
- private:
-  const StringType1 m_string1;
-  const StringType2 m_string2;
-};
-
-template <typename StringType1, typename StringType2>
-StringAppend<StringType1, StringType2>::StringAppend(StringType1 string1,
-                                                     StringType2 string2)
-    : m_string1(string1), m_string2(string2) {}
-
-template <typename StringType1, typename StringType2>
-StringAppend<StringType1, StringType2>::operator String() const {
-  if (is8Bit()) {
-    LChar* buffer;
-    RefPtr<StringImpl> result =
-        StringImpl::createUninitialized(length(), buffer);
-    writeTo(buffer);
-    return result.release();
-  }
-  UChar* buffer;
-  RefPtr<StringImpl> result = StringImpl::createUninitialized(length(), buffer);
-  writeTo(buffer);
-  return result.release();
-}
-
-template <typename StringType1, typename StringType2>
-StringAppend<StringType1, StringType2>::operator AtomicString() const {
-  return AtomicString(static_cast<String>(*this));
-}
-
-template <typename StringType1, typename StringType2>
-bool StringAppend<StringType1, StringType2>::is8Bit() const {
-  StringTypeAdapter<StringType1> adapter1(m_string1);
-  StringTypeAdapter<StringType2> adapter2(m_string2);
-  return adapter1.is8Bit() && adapter2.is8Bit();
-}
-
-template <typename StringType1, typename StringType2>
-void StringAppend<StringType1, StringType2>::writeTo(LChar* destination) const {
-  DCHECK(is8Bit());
-  StringTypeAdapter<StringType1> adapter1(m_string1);
-  StringTypeAdapter<StringType2> adapter2(m_string2);
-  adapter1.writeTo(destination);
-  adapter2.writeTo(destination + adapter1.length());
-}
-
-template <typename StringType1, typename StringType2>
-void StringAppend<StringType1, StringType2>::writeTo(UChar* destination) const {
-  StringTypeAdapter<StringType1> adapter1(m_string1);
-  StringTypeAdapter<StringType2> adapter2(m_string2);
-  adapter1.writeTo(destination);
-  adapter2.writeTo(destination + adapter1.length());
-}
-
-template <typename StringType1, typename StringType2>
-unsigned StringAppend<StringType1, StringType2>::length() const {
-  StringTypeAdapter<StringType1> adapter1(m_string1);
-  StringTypeAdapter<StringType2> adapter2(m_string2);
-  unsigned total = adapter1.length() + adapter2.length();
-  // Guard against overflow.
-  RELEASE_ASSERT(total >= adapter1.length() && total >= adapter2.length());
-  return total;
-}
-
-template <typename StringType1, typename StringType2>
-class StringTypeAdapter<StringAppend<StringType1, StringType2>> {
-  STACK_ALLOCATED();
-
- public:
-  StringTypeAdapter<StringAppend<StringType1, StringType2>>(
-      const StringAppend<StringType1, StringType2>& buffer)
-      : m_buffer(buffer) {}
-
-  unsigned length() const { return m_buffer.length(); }
-  bool is8Bit() const { return m_buffer.is8Bit(); }
-
-  void writeTo(LChar* destination) const { m_buffer.writeTo(destination); }
-  void writeTo(UChar* destination) const { m_buffer.writeTo(destination); }
-
- private:
-  const 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);
-}
-
-inline StringAppend<const char*, StringView> operator+(
-    const char* string1,
-    const StringView& string2) {
-  return StringAppend<const char*, StringView>(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);
-}
-
-inline StringAppend<const UChar*, StringView> operator+(
-    const UChar* string1,
-    const StringView& string2) {
-  return StringAppend<const UChar*, StringView>(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);
-}
-
-template <typename T>
-StringAppend<String, T> operator+(const String& string1, T string2) {
-  return StringAppend<String, T>(string1, string2);
-}
-
-template <typename T>
-StringAppend<AtomicString, T> operator+(const AtomicString& string1,
-                                        T string2) {
-  return StringAppend<AtomicString, T>(string1, string2);
-}
-
-template <typename T>
-StringAppend<StringView, T> operator+(const StringView& string1, T string2) {
-  return StringAppend<StringView, 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
+// The contents of this header was moved to platform/wtf as part of
+// WTF migration project. See the following post for details:
+// https://groups.google.com/a/chromium.org/d/msg/blink-dev/tLdAZCTlcAA/bYXVT8gYCAAJ