/* * HTMLTokenMarker.java - HTML token marker * Copyright (C) 1998, 1999 Slava Pestov * * You may use and modify this package for any purpose. Redistribution is * permitted, in both source and binary form, provided that this notice * remains intact in all source distributions of this package. */package org.syntax.jedit.tokenmarker;import org.syntax.jedit.*;import javax.swing.text.Segment;/** * HTML token marker. * * @author Slava Pestov * @version $Id: HTMLTokenMarker.java,v 1.34 1999/12/13 03:40:29 sp Exp $ */public class HTMLTokenMarker extends TokenMarker{	public static final byte JAVASCRIPT = Token.INTERNAL_FIRST;	public HTMLTokenMarker()	{		this(true);	}	public HTMLTokenMarker(boolean js)	{		this.js = js;		keywords = JavaScriptTokenMarker.getKeywords();	}	public byte markTokensImpl(byte token, Segment line, int lineIndex)	{		char[] array = line.array;		int offset = line.offset;		lastOffset = offset;		lastKeyword = offset;		int length = line.count + offset;		boolean backslash = false;loop:		for(int i = offset; i < length; i++)		{			int i1 = (i+1);			char c = array[i];			if(c == '\\')			{				backslash = !backslash;				continue;			}			switch(token)			{			case Token.NULL: // HTML text				backslash = false;				switch(c)				{				case '<':					addToken(i - lastOffset,token);					lastOffset = lastKeyword = i;					if(SyntaxUtilities.regionMatches(false,						line,i1,"!--"))					{						i += 3;						token = Token.COMMENT1;					}					else if(js && SyntaxUtilities.regionMatches(						true,line,i1,"script>"))					{						addToken(8,Token.KEYWORD1);						lastOffset = lastKeyword = (i += 8);						token = JAVASCRIPT;					}					else					{						token = Token.KEYWORD1;					}					break;				case '&':					addToken(i - lastOffset,token);					lastOffset = lastKeyword = i;					token = Token.KEYWORD2;					break;				}				break;			case Token.KEYWORD1: // Inside a tag				backslash = false;				if(c == '>')				{					addToken(i1 - lastOffset,token);					lastOffset = lastKeyword = i1;					token = Token.NULL;				}				break;			case Token.KEYWORD2: // Inside an entity				backslash = false;				if(c == ';')				{					addToken(i1 - lastOffset,token);					lastOffset = lastKeyword = i1;					token = Token.NULL;					break;				}				break;			case Token.COMMENT1: // Inside a comment				backslash = false;				if(SyntaxUtilities.regionMatches(false,line,i,"-->"))				{					addToken((i + 3) - lastOffset,token);					lastOffset = lastKeyword = i + 3;					token = Token.NULL;				}				break;			case JAVASCRIPT: // Inside a JavaScript				switch(c)				{				case '<':					backslash = false;					doKeyword(line,i,c);					if(SyntaxUtilities.regionMatches(true,						line,i1,"/script>"))					{						addToken(i - lastOffset,							Token.NULL);						addToken(9,Token.KEYWORD1);						lastOffset = lastKeyword = (i += 9);						token = Token.NULL;					}					break;				case '"':					if(backslash)						backslash = false;					else					{						doKeyword(line,i,c);						addToken(i - lastOffset,Token.NULL);						lastOffset = lastKeyword = i;						token = Token.LITERAL1;					}					break;				case '\'':					if(backslash)						backslash = false;					else					{						doKeyword(line,i,c);						addToken(i - lastOffset,Token.NULL);						lastOffset = lastKeyword = i;						token = Token.LITERAL2;					}					break;				case '/':					backslash = false;					doKeyword(line,i,c);					if(length - i > 1)					{						addToken(i - lastOffset,Token.NULL);						lastOffset = lastKeyword = i;						if(array[i1] == '/')						{							addToken(length - i,Token.COMMENT2);							lastOffset = lastKeyword = length;							break loop;						}						else if(array[i1] == '*')						{							token = Token.COMMENT2;						}					}					break;				default:					backslash = false;					if(!Character.isLetterOrDigit(c)						&& c != '_')						doKeyword(line,i,c);					break;				}				break;			case Token.LITERAL1: // JavaScript "..."				if(backslash)					backslash = false;				else if(c == '"')				{					addToken(i1 - lastOffset,Token.LITERAL1);					lastOffset = lastKeyword = i1;					token = JAVASCRIPT;				}				break;			case Token.LITERAL2: // JavaScript '...'				if(backslash)					backslash = false;				else if(c == '\'')				{					addToken(i1 - lastOffset,Token.LITERAL1);					lastOffset = lastKeyword = i1;					token = JAVASCRIPT;				}				break;			case Token.COMMENT2: // Inside a JavaScript comment				backslash = false;				if(c == '*' && length - i > 1 && array[i1] == '/')				{					addToken((i+=2) - lastOffset,Token.COMMENT2);					lastOffset = lastKeyword = i;					token = JAVASCRIPT;				}				break;			default:				throw new InternalError("Invalid state: "					+ token);			}		}		switch(token)		{		case Token.LITERAL1:		case Token.LITERAL2:			addToken(length - lastOffset,Token.INVALID);			token = JAVASCRIPT;			break;		case Token.KEYWORD2:			addToken(length - lastOffset,Token.INVALID);			token = Token.NULL;			break;		case JAVASCRIPT:			doKeyword(line,length,'\0');			addToken(length - lastOffset,Token.NULL);			break;		default:			addToken(length - lastOffset,token);			break;		}		return token;	}	// private members	private KeywordMap keywords;	private boolean js;	private int lastOffset;	private int lastKeyword;	private boolean doKeyword(Segment line, int i, char c)	{		int i1 = i+1;		int len = i - lastKeyword;		byte id = keywords.lookup(line,lastKeyword,len);		if(id != Token.NULL)		{			if(lastKeyword != lastOffset)				addToken(lastKeyword - lastOffset,Token.NULL);			addToken(len,id);			lastOffset = i;		}		lastKeyword = i1;		return false;	}}