gecko-dev/xpcom/string/nsTStringComparator.cpp
Eric Rahm 2c52ea2bb0 Bug 1627131 - Part 2: Move template function instantiations to definitions. r=xpcom-reviewers,sg
The instantiations of the externed templates need to be in the same translation unit as the definitions. Currently they work due to building in unified mode.

Differential Revision: https://phabricator.services.mozilla.com/D69467

--HG--
extra : moz-landing-system : lando
2020-04-08 10:46:02 +00:00

59 lines
2.1 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>
int NS_FASTCALL Compare(const mozilla::detail::nsTStringRepr<T>& aLhs,
const mozilla::detail::nsTStringRepr<T>& aRhs,
const nsTStringComparator<T>& comp) {
typedef typename nsTSubstring<T>::size_type size_type;
typedef typename nsTSubstring<T>::const_iterator const_iterator;
if (&aLhs == &aRhs) {
return 0;
}
const_iterator leftIter, rightIter;
aLhs.BeginReading(leftIter);
aRhs.BeginReading(rightIter);
size_type lLength = aLhs.Length();
size_type rLength = aRhs.Length();
size_type lengthToCompare = XPCOM_MIN(lLength, rLength);
int result;
if ((result = comp(leftIter.get(), rightIter.get(), lengthToCompare,
lengthToCompare)) == 0) {
if (lLength < rLength) {
result = -1;
} else if (rLength < lLength) {
result = 1;
} else {
result = 0;
}
}
return result;
}
template int NS_FASTCALL
Compare<char>(mozilla::detail::nsTStringRepr<char> const&,
mozilla::detail::nsTStringRepr<char> const&,
nsTStringComparator<char> const&);
template int NS_FASTCALL
Compare<char16_t>(mozilla::detail::nsTStringRepr<char16_t> const&,
mozilla::detail::nsTStringRepr<char16_t> const&,
nsTStringComparator<char16_t> const&);
template <typename T>
int nsTDefaultStringComparator<T>::operator()(const char_type* aLhs,
const char_type* aRhs,
uint32_t aLLength,
uint32_t aRLength) const {
return aLLength == aRLength ? nsCharTraits<T>::compare(aLhs, aRhs, aLLength)
: (aLLength > aRLength) ? 1 : -1;
}