0374f36974
Fixing bug 241328. Eliminating dead code, and making some classes use less memory on some 64-bit platforms. Also doing some general cleaning. r+sr=bzbarsky@mit.edu git-svn-id: svn://10.0.0.236/trunk@155384 18797224-902f-48f8-a5cc-f745e15eee43
322 lines
9.3 KiB
C++
322 lines
9.3 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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*
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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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/**
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* MODULE NOTES:
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* @update gess 4/1/98
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*
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* This class is defines the basic interface between the
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* parser and the content sink. The parser will iterate
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* over the collection of tokens that it sees from the
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* tokenizer, coverting each related "group" into one of
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* these. This object gets passed to the sink, and is
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* then immediately reused.
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*
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* If you want to hang onto one of these, you should
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* make your own copy.
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*
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*/
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#ifndef NS_PARSERNODE__
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#define NS_PARSERNODE__
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#include "nsIParserNode.h"
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#include "nsToken.h"
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#include "nsString.h"
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#include "nsParserCIID.h"
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#include "nsDeque.h"
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#include "nsDTDUtils.h"
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class nsTokenAllocator;
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class nsCParserNode : public nsIParserNode {
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protected:
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PRInt32 mRefCnt;
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public:
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void AddRef()
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{
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++mRefCnt;
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}
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void Release(nsFixedSizeAllocator& aPool)
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{
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if (--mRefCnt == 0)
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Destroy(this, aPool);
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}
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#ifndef HEAP_ALLOCATED_NODES
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protected:
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/**
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* Hide operator new; clients should use Create() instead.
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*/
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static void* operator new(size_t) CPP_THROW_NEW { return 0; }
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/**
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* Hide operator delete; clients should use Destroy() instead.
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*/
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static void operator delete(void*,size_t) {}
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#endif
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public:
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static nsCParserNode* Create(CToken* aToken,
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nsTokenAllocator* aTokenAllocator,
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nsNodeAllocator* aNodeAllocator)
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{
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#ifdef HEAP_ALLOCATED_NODES
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return new
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#else
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nsFixedSizeAllocator& pool = aNodeAllocator->GetArenaPool();
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void* place = pool.Alloc(sizeof(nsCParserNode));
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return ::new (place)
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#endif
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nsCParserNode(aToken, aTokenAllocator, aNodeAllocator);
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}
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static void Destroy(nsCParserNode* aNode, nsFixedSizeAllocator& aPool)
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{
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#ifdef HEAP_ALLOCATED_NODES
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delete aNode;
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#else
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aNode->~nsCParserNode();
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aPool.Free(aNode, sizeof(*aNode));
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#endif
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}
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/**
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* Default constructor
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*/
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nsCParserNode();
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/**
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* Constructor
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* @update gess5/11/98
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* @param aToken is the token this node "refers" to
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*/
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nsCParserNode(CToken* aToken,
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nsTokenAllocator* aTokenAllocator,
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nsNodeAllocator* aNodeAllocator=0);
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/**
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* Destructor
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* @update gess5/11/98
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*/
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virtual ~nsCParserNode();
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/**
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* Init
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* @update gess5/11/98
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*/
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virtual nsresult Init(CToken* aToken,
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nsTokenAllocator* aTokenAllocator,
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nsNodeAllocator* aNodeAllocator=0);
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/**
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* Retrieve the name of the node
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* @update gess5/11/98
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* @return string containing node name
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*/
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virtual const nsAString& GetTagName() const;
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/**
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* Retrieve the text from the given node
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* @update gess5/11/98
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* @return string containing node text
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*/
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virtual const nsAString& GetText() const;
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/**
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* Retrieve the type of the parser node.
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* @update gess5/11/98
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* @return node type.
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*/
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virtual PRInt32 GetNodeType() const;
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/**
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* Retrieve token type of parser node
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* @update gess5/11/98
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* @return token type
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*/
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virtual PRInt32 GetTokenType() const;
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//***************************************
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//methods for accessing key/value pairs
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//***************************************
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/**
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* Retrieve the number of attributes in this node.
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* @update gess5/11/98
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* @return count of attributes (may be 0)
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*/
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virtual PRInt32 GetAttributeCount(PRBool askToken=PR_FALSE) const;
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/**
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* Retrieve the key (of key/value pair) at given index
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* @update gess5/11/98
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* @param anIndex is the index of the key you want
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* @return string containing key.
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*/
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virtual const nsAString& GetKeyAt(PRUint32 anIndex) const;
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/**
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* Retrieve the value (of key/value pair) at given index
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* @update gess5/11/98
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* @param anIndex is the index of the value you want
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* @return string containing value.
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*/
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virtual const nsAString& GetValueAt(PRUint32 anIndex) const;
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/**
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* NOTE: When the node is an entity, this will translate the entity
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* to it's unicode value, and store it in aString.
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* @update gess5/11/98
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* @param aString will contain the resulting unicode string value
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* @return int (unicode char or unicode index from table)
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*/
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virtual PRInt32 TranslateToUnicodeStr(nsString& aString) const;
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/**
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*
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* @update gess5/11/98
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* @param
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* @return
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*/
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virtual void AddAttribute(CToken* aToken);
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/**
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* This getter retrieves the line number from the input source where
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* the token occured. Lines are interpreted as occuring between \n characters.
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* @update gess7/24/98
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* @return int containing the line number the token was found on
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*/
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virtual PRInt32 GetSourceLineNumber(void) const;
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/** This method pop the attribute token from the given index
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* @update harishd 03/25/99
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* @return token at anIndex
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*/
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virtual CToken* PopAttributeToken();
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/** Retrieve a string containing the tag and its attributes in "source" form
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* @update rickg 06June2000
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* @return void
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*/
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virtual void GetSource(nsString& aString);
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/**
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* This pair of methods allows us to set a generic bit (for arbitrary use)
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* on each node stored in the context.
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* @update gess 11May2000
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*/
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virtual PRBool GetGenericState(void) const {return mGenericState;}
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virtual void SetGenericState(PRBool aState) {mGenericState=aState;}
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/** Release all the objects you're holding
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* @update harishd 08/02/00
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* @return void
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*/
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virtual nsresult ReleaseAll();
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PRPackedBool mGenericState;
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PRInt32 mUseCount;
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CToken* mToken;
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nsTokenAllocator* mTokenAllocator;
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#ifdef HEAP_ALLOCATED_NODES
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nsNodeAllocator* mNodeAllocator; // weak
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#endif
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};
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class nsCParserStartNode : public nsCParserNode
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{
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public:
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static nsCParserNode* Create(CToken* aToken,
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nsTokenAllocator* aTokenAllocator,
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nsNodeAllocator* aNodeAllocator)
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{
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#ifdef HEAP_ALLOCATED_NODES
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return new
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#else
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nsFixedSizeAllocator& pool = aNodeAllocator->GetArenaPool();
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void* place = pool.Alloc(sizeof(nsCParserStartNode));
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return ::new (place)
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#endif
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nsCParserStartNode(aToken, aTokenAllocator, aNodeAllocator);
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}
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nsCParserStartNode()
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: nsCParserNode(), mAttributes(0) { }
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nsCParserStartNode(CToken* aToken,
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nsTokenAllocator* aTokenAllocator,
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nsNodeAllocator* aNodeAllocator = 0)
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: nsCParserNode(aToken, aTokenAllocator, aNodeAllocator), mAttributes(0) { }
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virtual ~nsCParserStartNode()
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{
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NS_ASSERTION(0 != mTokenAllocator, "Error: no token allocator");
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CToken* theAttrToken = 0;
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while ((theAttrToken = NS_STATIC_CAST(CToken*, mAttributes.Pop()))) {
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IF_FREE(theAttrToken, mTokenAllocator);
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}
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}
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virtual nsresult Init(CToken* aToken,
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nsTokenAllocator* aTokenAllocator,
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nsNodeAllocator* aNodeAllocator = 0);
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virtual void AddAttribute(CToken* aToken);
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virtual PRInt32 GetAttributeCount(PRBool askToken = PR_FALSE) const;
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virtual const nsAString& GetKeyAt(PRUint32 anIndex) const;
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virtual const nsAString& GetValueAt(PRUint32 anIndex) const;
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virtual CToken* PopAttributeToken();
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virtual void GetSource(nsString& aString);
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virtual nsresult ReleaseAll();
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protected:
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nsDeque mAttributes;
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};
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#endif
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