Emilio Cobos Álvarez
83c0d7c47d
After bug 2025271 we support unowned buffers, so we can do this, which optimizes some conversions like the ones described in bug 1854446: https://searchfox.org/firefox-main/rev/7b74d86ca4ce65e82fdaa3095d2d39a26d3ac4f6/dom/base/CustomElementRegistry.cpp#274-276 Arguably those probably hit the inline string cache now, but still seems like a common enough thing to do. Differential Revision: https://phabricator.services.mozilla.com/D289180
40 lines
1.2 KiB
C++
40 lines
1.2 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#include "nsTDependentString.h"
|
|
|
|
template <typename T>
|
|
void nsTDependentString<T>::Rebind(const string_type& str,
|
|
index_type startPos) {
|
|
MOZ_ASSERT(str.GetDataFlags() & DataFlags::TERMINATED,
|
|
"Unterminated flat string");
|
|
|
|
// If we currently own a buffer, release it.
|
|
this->Finalize();
|
|
|
|
size_type strLength = str.Length();
|
|
|
|
if (startPos > strLength) {
|
|
startPos = strLength;
|
|
}
|
|
|
|
char_type* newData =
|
|
const_cast<char_type*>(static_cast<const char_type*>(str.Data())) +
|
|
startPos;
|
|
size_type newLen = strLength - startPos;
|
|
DataFlags newDataFlags =
|
|
str.GetDataFlags() & (DataFlags::TERMINATED | DataFlags::LITERAL);
|
|
this->SetData(newData, newLen, newDataFlags);
|
|
}
|
|
|
|
template <typename T>
|
|
void nsTDependentString<T>::Rebind(const char_type* aStart,
|
|
const char_type* aEnd) {
|
|
MOZ_RELEASE_ASSERT(aStart <= aEnd, "Overflow!");
|
|
this->Rebind(aStart, aEnd - aStart);
|
|
}
|
|
|
|
template class nsTDependentString<char>;
|
|
template class nsTDependentString<char16_t>;
|