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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla.
*
* The Initial Developer of the Original Code is IBM Corporation.
* Portions created by IBM Corporation are Copyright (C) 2003
* IBM Corporation. All Rights Reserved.
*
* Contributor(s):
* Darin Fisher <darin@meer.net>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
/**
* nsTObsoleteAString_CharT : binary compatible with old nsAC?String vtable
*
* @status FROZEN
*/
class nsTObsoleteAString_CharT
{
public:
/**
* This is holds the address of the vtable for the canonical string
* implementation (i.e., nsTString).
*/
NS_COM static const void *sCanonicalVTable;
/**
* An |nsFragmentRequest| is used to tell |GetReadableFragment| and
* |GetWritableFragment| what to do.
*
* @see GetReadableFragment
*/
enum nsFragmentRequest { kPrevFragment, kFirstFragment, kLastFragment, kNextFragment, kFragmentAt };
/**
* A |nsReadableFragment| provides |const| access to a contiguous hunk of
* string of homogenous units, e.g., bytes (|char|). This doesn't mean it
* represents a flat hunk. It could be a variable length encoding, for
* instance UTF-8. And the fragment itself need not be zero-terminated.
*
* An |nsReadableFragment| is the underlying machinery that lets
* |nsReadingIterator|s work.
*
* @see nsReadingIterator
* @status FROZEN
*/
struct nsReadableFragment
{
const CharT* mStart;
const CharT* mEnd;
const void* mFragmentIdentifier;
nsReadableFragment() : mStart(0), mEnd(0), mFragmentIdentifier(0) {}
};
/**
* A |nsWritableFragment| provides non-|const| access to a contiguous hunk of
* string of homogenous units, e.g., bytes (|char|). This doesn't mean it
* represents a flat hunk. It could be a variable length encoding, for
* instance UTF-8. And the fragment itself need not be zero-terminated.
*
* An |nsWritableFragment| is the underlying machinery that lets
* |nsWritingIterator|s work.
*
* @see nsWritingIterator
* @status FROZEN
*/
struct nsWritableFragment
{
CharT* mStart;
CharT* mEnd;
void* mFragmentIdentifier;
nsWritableFragment() : mStart(0), mEnd(0), mFragmentIdentifier(0) {}
};
protected:
typedef CharT char_type;
typedef void buffer_handle_type;
typedef void shared_buffer_handle_type;
typedef nsReadableFragment const_fragment_type;
typedef nsWritableFragment fragment_type;
typedef nsTAString_CharT abstract_string_type;
typedef PRUint32 size_type;
typedef PRUint32 index_type;
protected:
friend class nsTAString_CharT;
friend class nsTSubstring_CharT;
/** here's the old nsAC?String vtable **/
virtual ~nsTObsoleteAString_CharT() { }
virtual PRUint32 GetImplementationFlags() const = 0;
virtual const buffer_handle_type* GetFlatBufferHandle() const = 0;
virtual const buffer_handle_type* GetBufferHandle() const = 0;
virtual const shared_buffer_handle_type* GetSharedBufferHandle() const = 0;
virtual size_type Length() const = 0;
virtual PRBool IsVoid() const = 0;
virtual void SetIsVoid( PRBool ) = 0;
virtual void SetCapacity( size_type ) = 0;
virtual void SetLength( size_type ) = 0;
virtual void Cut( index_type cutStart, size_type cutLength ) = 0;
virtual void do_AssignFromReadable( const abstract_string_type& ) = 0;
virtual void do_AssignFromElementPtr( const char_type* ) = 0;
virtual void do_AssignFromElementPtrLength( const char_type*, size_type ) = 0;
virtual void do_AssignFromElement( char_type ) = 0;
virtual void do_AppendFromReadable( const abstract_string_type& ) = 0;
virtual void do_AppendFromElementPtr( const char_type* ) = 0;
virtual void do_AppendFromElementPtrLength( const char_type*, size_type ) = 0;
virtual void do_AppendFromElement( char_type ) = 0;
virtual void do_InsertFromReadable( const abstract_string_type&, index_type ) = 0;
virtual void do_InsertFromElementPtr( const char_type*, index_type ) = 0;
virtual void do_InsertFromElementPtrLength( const char_type*, index_type, size_type ) = 0;
virtual void do_InsertFromElement( char_type, index_type ) = 0;
virtual void do_ReplaceFromReadable( index_type, size_type, const abstract_string_type& ) = 0;
virtual const char_type* GetReadableFragment( const_fragment_type&, nsFragmentRequest, PRUint32 = 0 ) const = 0;
virtual char_type* GetWritableFragment( fragment_type&, nsFragmentRequest, PRUint32 = 0 ) = 0;
};
// forward declare implementation
class nsTObsoleteAStringThunk_CharT;
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