xpcom/string/nsTDependentString.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "nsTDependentString.h"
   8
   9 template <typename T>
  10 nsTDependentString<T>::nsTDependentString(const char_type* aStart,
  11                                           const char_type* aEnd)
  12     : string_type(const_cast<char_type*>(aStart), aEnd - aStart,
  13                   DataFlags::TERMINATED, ClassFlags(0)) {
  14   MOZ_RELEASE_ASSERT(aStart <= aEnd, "Overflow!");
  15   this->AssertValidDependentString();
  16 }
  17
  18 template <typename T>
  19 void nsTDependentString<T>::Rebind(const string_type& str,
  20                                    index_type startPos) {
  21   MOZ_ASSERT(str.GetDataFlags() & DataFlags::TERMINATED,
  22              "Unterminated flat string");
  23
  24   // If we currently own a buffer, release it.
  25   this->Finalize();
  26
  27   size_type strLength = str.Length();
  28
  29   if (startPos > strLength) {
  30     startPos = strLength;
  31   }
  32
  33   char_type* newData =
  34       const_cast<char_type*>(static_cast<const char_type*>(str.Data())) +
  35       startPos;
  36   size_type newLen = strLength - startPos;
  37   DataFlags newDataFlags =
  38       str.GetDataFlags() & (DataFlags::TERMINATED | DataFlags::LITERAL);
  39   this->SetData(newData, newLen, newDataFlags);
  40 }
  41
  42 template <typename T>
  43 void nsTDependentString<T>::Rebind(const char_type* aStart,
  44                                    const char_type* aEnd) {
  45   MOZ_RELEASE_ASSERT(aStart <= aEnd, "Overflow!");
  46   this->Rebind(aStart, aEnd - aStart);
  47 }
  48
  49 template class nsTDependentString<char>;
  50 template class nsTDependentString<char16_t>;