зеркало из https://github.com/mozilla/gecko-dev.git
83 строки
3.1 KiB
C++
Executable File
83 строки
3.1 KiB
C++
Executable File
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/*
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* The contents of this file are subject to the Mozilla Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is Mozilla strings.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 2000 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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* Scott Collins <scc@mozilla.org> (original author)
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*
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*/
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#ifndef nsPrivateSharableString_h___
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#define nsPrivateSharableString_h___
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#ifndef nsBufferHandle_h___
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#include "nsBufferHandle.h"
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#endif
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/**
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* This class is part of the machinery that makes
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* most string implementations in this family share their underlying buffers
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* when convenient. It is _not_ part of the abstract string interface,
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* though other machinery interested in sharing buffers will know about it.
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*
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* Normal string clients must _never_ call routines from this interface.
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*/
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class NS_COM nsPrivateSharableString
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{
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public:
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typedef PRUnichar char_type;
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public:
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virtual ~nsPrivateSharableString() {}
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virtual PRUint32 GetImplementationFlags() const;
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virtual const nsBufferHandle<char_type>* GetFlatBufferHandle() const;
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virtual const nsBufferHandle<char_type>* GetBufferHandle() const;
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virtual const nsSharedBufferHandle<char_type>* GetSharedBufferHandle() const;
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/**
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* |GetBufferHandle()| will return either |0|, or a reasonable pointer.
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* The meaning of |0| is that the string points to a non-contiguous or else empty representation.
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* Otherwise |GetBufferHandle()| returns a handle that points to the single contiguous hunk of characters
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* that make up this string.
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*/
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};
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class NS_COM nsPrivateSharableCString
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{
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public:
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typedef char char_type;
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public:
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virtual ~nsPrivateSharableCString() {}
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virtual PRUint32 GetImplementationFlags() const;
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virtual const nsBufferHandle<char_type>* GetFlatBufferHandle() const;
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virtual const nsBufferHandle<char_type>* GetBufferHandle() const;
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virtual const nsSharedBufferHandle<char_type>* GetSharedBufferHandle() const;
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/**
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* |GetBufferHandle()| will return either |0|, or a reasonable pointer.
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* The meaning of |0| is that the string points to a non-contiguous or else empty representation.
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* Otherwise |GetBufferHandle()| returns a handle that points to the single contiguous hunk of characters
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* that make up this string.
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*/
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};
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#endif // !defined(nsPrivateSharableString_h___)
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