/*******************************************************************************
* Copyright (c) 2007 Red Hat, Inc.
* Distributed under license by Red Hat, Inc. All rights reserved.
* This program is made available under the terms of the
* Eclipse Public License v1.0 which accompanies this distribution,
* and is available at http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Red Hat, Inc. - initial API and implementation
******************************************************************************/
package org.jboss.tools.common.el.internal.core.parser.token;
import org.jboss.tools.common.el.core.ElCoreMessages;
import org.jboss.tools.common.el.core.parser.ITokenDescription;
import org.jboss.tools.common.el.core.parser.SyntaxError;
import org.jboss.tools.common.el.core.parser.Tokenizer;
import org.jboss.tools.common.el.internal.core.parser.rule.BasicStates;
/**
*
* @author V. Kabanovich
*
*/
public class StringTokenDescription implements ITokenDescription {
public static final int STRING = 5;
public static StringTokenDescription INSTANCE = new StringTokenDescription();
public String getName() {
return ElCoreMessages.StringTokenDescription_Name;
}
public int getType() {
return STRING;
}
public boolean isStart(Tokenizer tokenizer, int offset) {
char ch = tokenizer.lookUpChar(offset);
return ch == '"' || ch == '\'';
}
public boolean read(Tokenizer tokenizer, int offset) {
char ch = tokenizer.readNextChar();
char chE = ch;
int i = offset;
while(ch != '\0') {
i++;
ch = tokenizer.readNextChar();
if(ch == '\\') {
i++;
ch = tokenizer.readNextChar();
} else if(ch == chE) {
i++;
break;
}
}
tokenizer.addToken(getType(), offset, i);
if(ch == '\0') {
SyntaxError error = new SyntaxError(offset, BasicStates.STATE_EXPECTING_ARG);
error.setProblem(ElCoreMessages.StringTokenDescription_StringIsNotClosed);
tokenizer.addSyntaxError(error);
}
return i > offset;
}
}