/*
* Copyright 2004-2014 SmartBear Software
*
* Licensed under the EUPL, Version 1.1 or - as soon as they will be approved by the European Commission - subsequent
* versions of the EUPL (the "Licence");
* You may not use this work except in compliance with the Licence.
* You may obtain a copy of the Licence at:
*
* http://ec.europa.eu/idabc/eupl
*
* Unless required by applicable law or agreed to in writing, software distributed under the Licence is
* distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied. See the Licence for the specific language governing permissions and limitations
* under the Licence.
*/
package org.syntax.jedit.tokenmarker;
import javax.swing.text.Segment;
/**
* Makefile token marker.
*
* @author Slava Pestov
* @version $Id: MakefileTokenMarker.java,v 1.18 1999/12/13 03:40:30 sp Exp $
*/
public class MakefileTokenMarker extends TokenMarker {
// public members
public byte markTokensImpl(byte token, Segment line, int lineIndex) {
char[] array = line.array;
int offset = line.offset;
int lastOffset = 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 ':':
case '=':
case ' ':
case '\t':
backslash = false;
if (lastOffset == offset) {
addToken(i1 - lastOffset, Token.KEYWORD1);
lastOffset = i1;
}
break;
case '#':
if (backslash) {
backslash = false;
} else {
addToken(i - lastOffset, token);
addToken(length - i, Token.COMMENT1);
lastOffset = length;
break loop;
}
break;
case '$':
if (backslash) {
backslash = false;
} else if (lastOffset != offset) {
addToken(i - lastOffset, token);
lastOffset = i;
if (length - i > 1) {
char c1 = array[i1];
if (c1 == '(' || c1 == '{') {
token = Token.KEYWORD2;
} else {
addToken(2, Token.KEYWORD2);
lastOffset += 2;
i++;
}
}
}
break;
case '"':
if (backslash) {
backslash = false;
} else {
addToken(i - lastOffset, token);
token = Token.LITERAL1;
lastOffset = i;
}
break;
case '\'':
if (backslash) {
backslash = false;
} else {
addToken(i - lastOffset, token);
token = Token.LITERAL2;
lastOffset = i;
}
break;
default:
backslash = false;
break;
}
case Token.KEYWORD2:
backslash = false;
if (c == ')' || c == '}') {
addToken(i1 - lastOffset, token);
token = Token.NULL;
lastOffset = i1;
}
break;
case Token.LITERAL1:
if (backslash) {
backslash = false;
} else if (c == '"') {
addToken(i1 - lastOffset, token);
token = Token.NULL;
lastOffset = i1;
} else {
backslash = false;
}
break;
case Token.LITERAL2:
if (backslash) {
backslash = false;
} else if (c == '\'') {
addToken(i1 - lastOffset, Token.LITERAL1);
token = Token.NULL;
lastOffset = i1;
} else {
backslash = false;
}
break;
}
}
switch (token) {
case Token.KEYWORD2:
addToken(length - lastOffset, Token.INVALID);
token = Token.NULL;
break;
case Token.LITERAL2:
addToken(length - lastOffset, Token.LITERAL1);
break;
default:
addToken(length - lastOffset, token);
break;
}
return token;
}
}