/*
* JBoss, Home of Professional Open Source.
* Copyright 2008, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This 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 software 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 software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.ejb.plugins.cmp.ejbql;
/**
* This abstract syntax node represents an exact numeric literal.
*
* @author <a href="mailto:dain@daingroup.com">Dain Sundstrom</a>
* @version $Revision: 81030 $
*/
public final class ASTExactNumericLiteral extends SimpleNode {
public long value;
public String literal;
private static final String LOFFER_L = "l";
private static final String UPPER_L = "L";
private static final String OX = "0X";
private static final String Ox = "0x";
private static final String ZERRO = "0";
public ASTExactNumericLiteral(int id) {
super(id);
}
public void setValue(String number) {
literal = number;
// long suffix
if(number.endsWith(LOFFER_L) || number.endsWith(UPPER_L)) {
// chop off the suffix
number = number.substring(0, number.length() - 1);
}
// hex
if(number.startsWith(OX) || number.startsWith(Ox)) {
// handle literals from 0x8000000000000000L to 0xffffffffffffffffL:
// remove sign bit, parse as positive, then calculate the negative
// value with the sign bit
if(number.length() == 18) {
byte first = Byte.decode(number.substring(0, 3)).byteValue();
if(first >= 8) {
number = Ox + (first - 8) + number.substring(3);
value = Long.decode(number).longValue() - Long.MAX_VALUE - 1;
return;
}
}
} else if(number.startsWith(ZERRO)) { // octal
// handle literals
// from 01000000000000000000000L to 01777777777777777777777L
// remove sign bit, parse as positive, then calculate the
// negative value with the sign bit
if(number.length() == 23) {
if(number.charAt(1) == '1') {
number = ZERRO + number.substring(2);
value = Long.decode(number).longValue() - Long.MAX_VALUE - 1;
return;
}
}
}
value = Long.decode(number).longValue();
}
public String toString() {
return literal;
}
/** Accept the visitor. **/
public Object jjtAccept(JBossQLParserVisitor visitor, Object data) {
return visitor.visit(this, data);
}
}