180 lines
4.8 KiB
C++
180 lines
4.8 KiB
C++
/* -*- 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 Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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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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class nsITokenRecycler;
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class nsCParserNode : public nsIParserNode {
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enum {eMaxAttr=20};
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public:
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NS_DECL_ISUPPORTS
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/**
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* Default 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=nsnull,PRInt32 aLineNumber=1,nsITokenRecycler* aRecycler=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=nsnull,PRInt32 aLineNumber=1);
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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 nsString& GetName() 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 nsString& GetText() const;
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/**
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* Retrieve skipped context from node
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* @update gess5/11/98
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* @return string containing skipped content
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*/
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virtual const nsString& GetSkippedContent() 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 nsString& 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 nsString& 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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*
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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 SetSkippedContent(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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protected:
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PRUint32 mAttributeCount;
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PRInt32 mLineNumber;
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CToken* mToken;
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CToken* mAttributes[eMaxAttr]; // XXX Ack! This needs to be dynamic!
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CToken* mSkippedContent;
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nsITokenRecycler* mRecycler;
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};
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#endif
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