gecko-dev/xpcom/string/nsTDependentString.h

107 строки
2.7 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/. */
/**
* nsTDependentString_CharT
*
* Stores a null-terminated, immutable sequence of characters.
*
* Subclass of nsTString that restricts string value to an immutable
* character sequence. This class does not own its data, so the creator
* of objects of this type must take care to ensure that a
* nsTDependentString continues to reference valid memory for the
* duration of its use.
*/
class nsTDependentString_CharT : public nsTString_CharT
{
public:
typedef nsTDependentString_CharT self_type;
public:
/**
* constructors
*/
nsTDependentString_CharT(const char_type* aStart, const char_type* aEnd)
: string_type(const_cast<char_type*>(aStart),
uint32_t(aEnd - aStart), F_TERMINATED)
{
AssertValidDepedentString();
}
nsTDependentString_CharT(const char_type* aData, uint32_t aLength)
: string_type(const_cast<char_type*>(aData), aLength, F_TERMINATED)
{
AssertValidDepedentString();
}
#if defined(CharT_is_PRUnichar) && defined(MOZ_USE_CHAR16_WRAPPER)
nsTDependentString_CharT(char16ptr_t aData, uint32_t aLength)
: nsTDependentString_CharT(static_cast<const char16_t*>(aData), aLength)
{
}
#endif
explicit
nsTDependentString_CharT(const char_type* aData)
: string_type(const_cast<char_type*>(aData),
uint32_t(char_traits::length(aData)), F_TERMINATED)
{
AssertValidDepedentString();
}
#if defined(CharT_is_PRUnichar) && defined(MOZ_USE_CHAR16_WRAPPER)
explicit
nsTDependentString_CharT(char16ptr_t aData)
: nsTDependentString_CharT(static_cast<const char16_t*>(aData))
{
}
#endif
nsTDependentString_CharT(const string_type& aStr, uint32_t aStartPos)
: string_type()
{
Rebind(aStr, aStartPos);
}
// Create a nsTDependentSubstring to be bound later
nsTDependentString_CharT()
: string_type()
{
}
// XXX are you sure??
// auto-generated copy-constructor OK
// auto-generated copy-assignment operator OK
// auto-generated destructor OK
/**
* allow this class to be bound to a different string...
*/
using nsTString_CharT::Rebind;
void Rebind(const char_type* aData)
{
Rebind(aData, uint32_t(char_traits::length(aData)));
}
void Rebind(const char_type* aStart, const char_type* aEnd)
{
Rebind(aStart, uint32_t(aEnd - aStart));
}
void Rebind(const string_type&, uint32_t aStartPos);
private:
// NOT USED
nsTDependentString_CharT(const substring_tuple_type&) = delete;
};