gecko-dev/xpcom/string/nsTDependentSubstring.h

107 строки
3.2 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/. */
// IWYU pragma: private, include "nsString.h"
/**
* nsTDependentSubstring_CharT
*
* A string class which wraps an external array of string characters. It
* is the client code's responsibility to ensure that the external buffer
* remains valid for a long as the string is alive.
*
* NAMES:
* nsDependentSubstring for wide characters
* nsDependentCSubstring for narrow characters
*/
class nsTDependentSubstring_CharT : public nsTSubstring_CharT
{
public:
typedef nsTDependentSubstring_CharT self_type;
public:
void Rebind(const substring_type&, uint32_t aStartPos,
uint32_t aLength = size_type(-1));
void Rebind(const char_type* aData, size_type aLength);
void Rebind(const char_type* aStart, const char_type* aEnd);
nsTDependentSubstring_CharT(const substring_type& aStr, uint32_t aStartPos,
uint32_t aLength = size_type(-1))
: substring_type()
{
Rebind(aStr, aStartPos, aLength);
}
nsTDependentSubstring_CharT(const char_type* aData, size_type aLength)
: substring_type(const_cast<char_type*>(aData), aLength, F_NONE)
{
}
nsTDependentSubstring_CharT(const char_type* aStart, const char_type* aEnd);
#if defined(CharT_is_PRUnichar) && defined(MOZ_USE_CHAR16_WRAPPER)
nsTDependentSubstring_CharT(char16ptr_t aData, size_type aLength)
: nsTDependentSubstring_CharT(static_cast<const char16_t*>(aData), aLength)
{
}
nsTDependentSubstring_CharT(char16ptr_t aStart, char16ptr_t aEnd);
#endif
nsTDependentSubstring_CharT(const const_iterator& aStart,
const const_iterator& aEnd);
// Create a nsTDependentSubstring to be bound later
nsTDependentSubstring_CharT()
: substring_type()
{
}
// auto-generated copy-constructor OK (XXX really?? what about base class copy-ctor?)
private:
// NOT USED
void operator=(const self_type&); // we're immutable, you can't assign into a substring
};
inline const nsTDependentSubstring_CharT
Substring(const nsTSubstring_CharT& aStr, uint32_t aStartPos,
uint32_t aLength = uint32_t(-1))
{
return nsTDependentSubstring_CharT(aStr, aStartPos, aLength);
}
inline const nsTDependentSubstring_CharT
Substring(const nsReadingIterator<CharT>& aStart,
const nsReadingIterator<CharT>& aEnd)
{
return nsTDependentSubstring_CharT(aStart.get(), aEnd.get());
}
inline const nsTDependentSubstring_CharT
Substring(const CharT* aData, uint32_t aLength)
{
return nsTDependentSubstring_CharT(aData, aLength);
}
const nsTDependentSubstring_CharT
Substring(const CharT* aStart, const CharT* aEnd);
inline const nsTDependentSubstring_CharT
StringHead(const nsTSubstring_CharT& aStr, uint32_t aCount)
{
return nsTDependentSubstring_CharT(aStr, 0, aCount);
}
inline const nsTDependentSubstring_CharT
StringTail(const nsTSubstring_CharT& aStr, uint32_t aCount)
{
return nsTDependentSubstring_CharT(aStr, aStr.Length() - aCount, aCount);
}