/* * CTokenMarker.java - C 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;/** * C token marker. * * @author Slava Pestov * @version $Id: CTokenMarker.java,v 1.34 1999/12/13 03:40:29 sp Exp $ */public class CTokenMarker extends TokenMarker{	public CTokenMarker()	{		this(true,getKeywords());	}	public CTokenMarker(boolean cpp, KeywordMap keywords)	{		this.cpp = cpp;		this.keywords = keywords;	}	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:				switch(c)				{				case '#':					if(backslash)						backslash = false;					else if(cpp)					{						if(doKeyword(line,i,c))							break;						addToken(i - lastOffset,token);						addToken(length - i,Token.KEYWORD2);						lastOffset = lastKeyword = length;						break loop;					}					break;				case '"':					doKeyword(line,i,c);					if(backslash)						backslash = false;					else					{						addToken(i - lastOffset,token);						token = Token.LITERAL1;						lastOffset = lastKeyword = i;					}					break;				case '\'':					doKeyword(line,i,c);					if(backslash)						backslash = false;					else					{						addToken(i - lastOffset,token);						token = Token.LITERAL2;						lastOffset = lastKeyword = i;					}					break;				case ':':					if(lastKeyword == offset)					{						if(doKeyword(line,i,c))							break;						backslash = false;						addToken(i1 - lastOffset,Token.LABEL);						lastOffset = lastKeyword = i1;					}					else if(doKeyword(line,i,c))						break;					break;				case '/':					backslash = false;					doKeyword(line,i,c);					if(length - i > 1)					{						switch(array[i1])						{						case '*':							addToken(i - lastOffset,token);							lastOffset = lastKeyword = i;							if(length - i > 2 && array[i+2] == '*')								token = Token.COMMENT2;							else								token = Token.COMMENT1;							break;						case '/':							addToken(i - lastOffset,token);							addToken(length - i,Token.COMMENT1);							lastOffset = lastKeyword = length;							break loop;						}					}					break;				default:					backslash = false;					if(!Character.isLetterOrDigit(c)						&& c != '_')						doKeyword(line,i,c);					break;				}				break;			case Token.COMMENT1:			case Token.COMMENT2:				backslash = false;				if(c == '*' && length - i > 1)				{					if(array[i1] == '/')					{						i++;						addToken((i+1) - lastOffset,token);						token = Token.NULL;						lastOffset = lastKeyword = i+1;					}				}				break;			case Token.LITERAL1:				if(backslash)					backslash = false;				else if(c == '"')				{					addToken(i1 - lastOffset,token);					token = Token.NULL;					lastOffset = lastKeyword = i1;				}				break;			case Token.LITERAL2:				if(backslash)					backslash = false;				else if(c == '\'')				{					addToken(i1 - lastOffset,Token.LITERAL1);					token = Token.NULL;					lastOffset = lastKeyword = i1;				}				break;			default:				throw new InternalError("Invalid state: "					+ token);			}		}		if(token == Token.NULL)			doKeyword(line,length,'\0');		switch(token)		{		case Token.LITERAL1:		case Token.LITERAL2:			addToken(length - lastOffset,Token.INVALID);			token = Token.NULL;			break;		case Token.KEYWORD2:			addToken(length - lastOffset,token);			if(!backslash)				token = Token.NULL;		default:			addToken(length - lastOffset,token);			break;		}		return token;	}	public static KeywordMap getKeywords()	{		if(cKeywords == null)		{			cKeywords = new KeywordMap(false);			cKeywords.add("char",Token.KEYWORD3);			cKeywords.add("double",Token.KEYWORD3);			cKeywords.add("enum",Token.KEYWORD3);			cKeywords.add("float",Token.KEYWORD3);			cKeywords.add("int",Token.KEYWORD3);			cKeywords.add("long",Token.KEYWORD3);			cKeywords.add("short",Token.KEYWORD3);			cKeywords.add("signed",Token.KEYWORD3);			cKeywords.add("struct",Token.KEYWORD3);			cKeywords.add("typedef",Token.KEYWORD3);			cKeywords.add("union",Token.KEYWORD3);			cKeywords.add("unsigned",Token.KEYWORD3);			cKeywords.add("void",Token.KEYWORD3);			cKeywords.add("auto",Token.KEYWORD1);			cKeywords.add("const",Token.KEYWORD1);			cKeywords.add("extern",Token.KEYWORD1);			cKeywords.add("register",Token.KEYWORD1);			cKeywords.add("static",Token.KEYWORD1);			cKeywords.add("volatile",Token.KEYWORD1);			cKeywords.add("break",Token.KEYWORD1);			cKeywords.add("case",Token.KEYWORD1);			cKeywords.add("continue",Token.KEYWORD1);			cKeywords.add("default",Token.KEYWORD1);			cKeywords.add("do",Token.KEYWORD1);			cKeywords.add("else",Token.KEYWORD1);			cKeywords.add("for",Token.KEYWORD1);			cKeywords.add("goto",Token.KEYWORD1);			cKeywords.add("if",Token.KEYWORD1);			cKeywords.add("return",Token.KEYWORD1);			cKeywords.add("sizeof",Token.KEYWORD1);			cKeywords.add("switch",Token.KEYWORD1);			cKeywords.add("while",Token.KEYWORD1);			cKeywords.add("asm",Token.KEYWORD2);			cKeywords.add("asmlinkage",Token.KEYWORD2);			cKeywords.add("far",Token.KEYWORD2);			cKeywords.add("huge",Token.KEYWORD2);			cKeywords.add("inline",Token.KEYWORD2);			cKeywords.add("near",Token.KEYWORD2);			cKeywords.add("pascal",Token.KEYWORD2);			cKeywords.add("true",Token.LITERAL2);			cKeywords.add("false",Token.LITERAL2);			cKeywords.add("NULL",Token.LITERAL2);		}		return cKeywords;	}	// private members	private static KeywordMap cKeywords;	private boolean cpp;	private KeywordMap keywords;	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;	}}