/**
* Copyright (C) 2001-2017 by RapidMiner and the contributors
*
* Complete list of developers available at our web site:
*
* http://rapidminer.com
*
* This program is free software: you can redistribute it and/or modify it under the terms of the
* GNU Affero General Public License as published by the Free Software Foundation, either version 3
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
* even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License along with this program.
* If not, see http://www.gnu.org/licenses/.
*/
package com.rapidminer.gui.tools.syntax;
/*
* XMLTokenMarker.java - XML token marker Copyright (C) 1998, 1999 Slava Pestov Copyright (C) 2001
* Tom Bradford
*
* 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;
/**
* XML Token Marker Rewrite
*
* @author Tom Bradford, Ingo Mierswa
*/
public class XMLTokenMarker extends TokenMarker {
public XMLTokenMarker() {}
@Override
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;
// Ugly hack to handle multi-line tags
boolean sk1 = token == Token.KEYWORD1;
for (int i = offset; i < length; i++) {
int ip1 = i + 1;
char c = array[i];
switch (token) {
case Token.NULL: // text
switch (c) {
case '<':
addToken(i - lastOffset, token);
lastOffset = i;
if (SyntaxUtilities.regionMatches(false, line, ip1, "!--")) {
i += 3;
token = Token.COMMENT1;
} else if (array[ip1] == '!') {
i += 1;
token = Token.COMMENT2;
} else if (array[ip1] == '?') {
i += 1;
token = Token.KEYWORD3;
} else {
token = Token.KEYWORD1;
}
break;
case '&':
addToken(i - lastOffset, token);
lastOffset = i;
token = Token.LABEL;
break;
}
break;
case Token.KEYWORD1: // tag
switch (c) {
case '>':
addToken(ip1 - lastOffset, token);
lastOffset = ip1;
token = Token.NULL;
sk1 = false;
break;
case ' ':
case '\t':
addToken(i - lastOffset, token);
lastOffset = i;
token = Token.KEYWORD2;
sk1 = false;
break;
default:
if (sk1) {
token = Token.KEYWORD2;
sk1 = false;
}
break;
}
break;
case Token.KEYWORD2: // attribute
switch (c) {
case '>':
addToken(ip1 - lastOffset, token);
lastOffset = ip1;
token = Token.NULL;
break;
case '/':
addToken(i - lastOffset, token);
lastOffset = i;
token = Token.KEYWORD1;
break;
case '=':
addToken(i - lastOffset, token);
lastOffset = i;
token = Token.OPERATOR;
}
break;
case Token.OPERATOR: // equal for attribute
switch (c) {
case '\"':
case '\'':
addToken(i - lastOffset, token);
lastOffset = i;
if (c == '\"') {
token = Token.LITERAL1;
} else {
token = Token.LITERAL2;
}
break;
}
break;
case Token.LITERAL1:
case Token.LITERAL2: // strings
if ((token == Token.LITERAL1 && c == '\"') || (token == Token.LITERAL2 && c == '\'')) {
addToken(ip1 - lastOffset, token);
lastOffset = ip1;
token = Token.KEYWORD1;
}
break;
case Token.LABEL: // entity
if (c == ';') {
addToken(ip1 - lastOffset, token);
lastOffset = ip1;
token = Token.NULL;
break;
}
break;
case Token.COMMENT1: // Inside a comment
if (SyntaxUtilities.regionMatches(false, line, i, "-->")) {
addToken((i + 3) - lastOffset, token);
lastOffset = i + 3;
token = Token.NULL;
}
break;
case Token.COMMENT2: // Inside a declaration
if (SyntaxUtilities.regionMatches(false, line, i, ">")) {
addToken(ip1 - lastOffset, token);
lastOffset = ip1;
token = Token.NULL;
}
break;
case Token.KEYWORD3: // Inside a processor instruction
if (SyntaxUtilities.regionMatches(false, line, i, "?>")) {
addToken((i + 2) - lastOffset, token);
lastOffset = i + 2;
token = Token.NULL;
}
break;
default:
throw new InternalError("Invalid state: " + token);
}
}
switch (token) {
case Token.LABEL:
addToken(length - lastOffset, Token.INVALID);
token = Token.NULL;
break;
default:
addToken(length - lastOffset, token);
break;
}
return token;
}
}