mirror of
https://github.com/mozilla/gecko-dev.git
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235 lines
7.0 KiB
C++
235 lines
7.0 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Scott Collins <scc@mozilla.org>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef nsStdStringWrapper_h___
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#define nsStdStringWrapper_h___
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#include <string>
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#ifndef nsAString_h___
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#include "nsAString.h"
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#endif
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template <class T>
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class nsStringAllocator
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: public std::allocator<T> // temporarily
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{
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// ...
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};
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template < class CharT, class TraitsT = nsCharTraits<CharT>, class AllocatorT = nsStringAllocator<CharT> >
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class basic_nsStdStringWrapper
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: public basic_nsAString<CharT>
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/*
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...
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*/
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{
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protected:
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std::basic_string<CharT, TraitsT, AllocatorT> mRawString;
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typedef std::basic_string<CharT, TraitsT, AllocatorT> basic_string_t;
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using typename basic_string_t::traits_type;
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using typename basic_string_t::value_type;
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using typename basic_string_t::allocator_type;
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using typename basic_string_t::size_type;
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using typename basic_string_t::difference_type;
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using typename basic_string_t::reference;
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using typename basic_string_t::const_reference;
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using typename basic_string_t::pointer;
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using typename basic_string_t::const_pointer;
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using typename basic_string_t::iterator;
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using typename basic_string_t::const_iterator;
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using typename basic_string_t::reverse_iterator;
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using typename basic_string_t::const_reverse_iterator;
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static const size_type npos = size_type(-1);
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protected:
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virtual const void* Implementation() const;
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virtual const CharT* GetReadableFragment( nsReadableFragment<CharT>&, nsFragmentRequest, PRUint32 ) const;
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virtual CharT* GetWritableFragment( nsWritableFragment<CharT>&, nsFragmentRequest, PRUint32 );
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public:
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basic_nsStdStringWrapper() { }
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#if 0
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explicit
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basic_nsStdStringWrapper( const AllocatorT& a = AllocatorT() )
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: mRawString(a)
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{
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}
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#endif
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explicit
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basic_nsStdStringWrapper( const basic_nsAString<CharT>& str )
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{
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Assign(str);
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}
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#if 0
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explicit
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basic_nsStdStringWrapper( const basic_string_t& str, size_type pos = 0, size_type n = npos )
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: mRawString(str, pos, n)
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{
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}
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basic_nsStdStringWrapper( const basic_string_t& str, size_type pos, size_type n, const AllocatorT& a )
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: mRawString(str, pos, n, a)
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{
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}
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#endif
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basic_nsStdStringWrapper( const CharT* s, size_type n, const AllocatorT& a = AllocatorT() )
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: mRawString(s, n, a)
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{
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}
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explicit
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basic_nsStdStringWrapper( const CharT* s, const AllocatorT& a = AllocatorT() )
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: mRawString(s, a)
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{
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}
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#if 0
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basic_nsStdStringWrapper( size_type n, CharT c, const AllocatorT& a = AllocatorT() )
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: mRawString(n, c, a)
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{
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}
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#endif
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virtual
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PRUint32
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Length() const
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{
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return mRawString.length();
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}
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virtual
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void
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SetCapacity( PRUint32 aNewCapacity )
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{
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mRawString.reserve(aNewCapacity);
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}
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virtual
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void
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SetLength( PRUint32 aNewLength )
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{
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mRawString.resize(aNewLength);
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}
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protected:
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virtual void do_AssignFromReadable( const basic_nsAString<CharT>& );
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// ...
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};
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NS_DEF_TEMPLATE_STRING_COMPARISON_OPERATORS(basic_nsStdStringWrapper<CharT>, CharT)
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template <class CharT, class TraitsT, class AllocatorT>
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const void*
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basic_nsStdStringWrapper<CharT, TraitsT, AllocatorT>::Implementation() const
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{
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static const char* implementation = "nsStdStringWrapper";
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return implementation;
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}
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template <class CharT, class TraitsT, class AllocatorT>
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const CharT*
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basic_nsStdStringWrapper<CharT, TraitsT, AllocatorT>::GetReadableFragment( nsReadableFragment<CharT>& aFragment, nsFragmentRequest aRequest, PRUint32 aOffset ) const
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{
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switch ( aRequest )
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{
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case kFirstFragment:
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case kLastFragment:
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case kFragmentAt:
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aFragment.mEnd = (aFragment.mStart = mRawString.data()) + mRawString.length();
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return aFragment.mStart + aOffset;
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case kPrevFragment:
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case kNextFragment:
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default:
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return 0;
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}
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}
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template <class CharT, class TraitsT, class AllocatorT>
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CharT*
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basic_nsStdStringWrapper<CharT, TraitsT, AllocatorT>::GetWritableFragment( nsWritableFragment<CharT>& aFragment, nsFragmentRequest aRequest, PRUint32 aOffset )
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{
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switch ( aRequest )
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{
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case kFirstFragment:
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case kLastFragment:
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case kFragmentAt:
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aFragment.mEnd = (aFragment.mStart = NS_CONST_CAST(CharT*, mRawString.data())) + mRawString.length();
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return aFragment.mStart + aOffset;
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case kPrevFragment:
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case kNextFragment:
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default:
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return 0;
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}
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}
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template <class CharT, class TraitsT, class AllocatorT>
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void
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basic_nsStdStringWrapper<CharT, TraitsT, AllocatorT>::do_AssignFromReadable( const basic_nsAString<CharT>& rhs )
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{
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typedef basic_nsStdStringWrapper<CharT, TraitsT, AllocatorT> this_t;
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if ( SameImplementation(*this, rhs) )
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mRawString = NS_STATIC_CAST(this_t, rhs).mRawString;
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else
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basic_nsAString<CharT>::do_AssignFromReadable(rhs);
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}
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typedef basic_nsStdStringWrapper<PRUnichar> nsStdString;
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typedef basic_nsStdStringWrapper<char> nsStdCString;
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#endif // !defined(nsStdStringWrapper_h___)
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