/*
* 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;
import org.syntax.jedit.KeywordMap;
/**
* 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;
}
}