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 template <typename T>
   8 nsTDependentString<T>::nsTDependentString(const char_type* aStart,
   9                                           const char_type* aEnd)
  10     : string_type(const_cast<char_type*>(aStart), uint32_t(aEnd - aStart),
  11                   DataFlags::TERMINATED, ClassFlags(0)) {
  12   MOZ_RELEASE_ASSERT(aStart <= aEnd, "Overflow!");
  13   this->AssertValidDependentString();
  14 }
  15
  16 template <typename T>
  17 void nsTDependentString<T>::Rebind(const string_type& str, uint32_t startPos) {
  18   MOZ_ASSERT(str.GetDataFlags() & DataFlags::TERMINATED,
  19              "Unterminated flat string");
  20
  21   // If we currently own a buffer, release it.
  22   this->Finalize();
  23
  24   size_type strLength = str.Length();
  25
  26   if (startPos > strLength) {
  27     startPos = strLength;
  28   }
  29
  30   char_type* newData =
  31       const_cast<char_type*>(static_cast<const char_type*>(str.Data())) +
  32       startPos;
  33   size_type newLen = strLength - startPos;
  34   DataFlags newDataFlags =
  35       str.GetDataFlags() & (DataFlags::TERMINATED | DataFlags::LITERAL);
  36   this->SetData(newData, newLen, newDataFlags);
  37 }
  38
  39 template <typename T>
  40 void nsTDependentString<T>::Rebind(const char_type* aStart,
  41                                    const char_type* aEnd) {
  42   MOZ_RELEASE_ASSERT(aStart <= aEnd, "Overflow!");
  43   this->Rebind(aStart, uint32_t(aEnd - aStart));
  44 }