/*
* $Id$
*
* Copyright (C) 2003-2015 JNode.org
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library 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 Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; If not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.jnode.shell.syntax;
/**
* This class represents the micro-syntax for a fixed symbol.
*
* @author crawley@jnode.org
*/
public class MuSymbol extends MuSyntax {
private final String symbol;
public MuSymbol(String symbol) {
this(null, symbol);
}
public MuSymbol(String label, String symbol) {
super(label);
this.symbol = symbol;
if (symbol.length() == 0) {
throw new IllegalArgumentException("empty symbol string");
}
}
public String getSymbol() {
return symbol;
}
@Override
String format(FormatState state) {
return '\'' + symbol + '\'';
}
@Override
public MuSyntaxKind getKind() {
return MuSyntaxKind.SYMBOL;
}
@Override
MuSyntax resolveBackReferences(ResolveState state) throws SyntaxFailureException {
if (label != null) {
state.refMap.put(label, this);
}
return this;
}
}