package org.jedit.syntax;
/*
* 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.
*/
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;
}
}