gecko-dev/xpcom/string/nsTDependentString.cpp
Eric Rahm 030b39d813 Bug 1393230 - Part 3: Convert the xpcom string classes to be templated on char type. r=njn, r=fitzgen, r=sfink
This removes the double-include macro hackery that we use to define two
separate string types (nsAString and nsACString) in favor of a templated
solution.

Annotations for Valgrind and the JS hazard analysis are updated as well as
the rust binding generations for string code.

--HG--
extra : rebase_source : 63ab2c4620cfcd4b764d42d654c82f30f984d016
extra : source : 9115364cd4aa078c49bba7911069f8178e55166f
2017-08-14 14:22:50 -07:00

46 lines
1.5 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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/. */
template <typename T>
nsTDependentString<T>::nsTDependentString(const char_type* aStart,
const char_type* aEnd)
: string_type(const_cast<char_type*>(aStart), uint32_t(aEnd - aStart),
DataFlags::TERMINATED, ClassFlags(0))
{
MOZ_RELEASE_ASSERT(aStart <= aEnd, "Overflow!");
this->AssertValidDependentString();
}
template <typename T>
void
nsTDependentString<T>::Rebind(const string_type& str, uint32_t 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, uint32_t(aEnd - aStart));
}