/*******************************************************************************
* Copyright (c) 2000, 2011 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.che.ide.ext.java.jdt.internal.compiler.ast;
public abstract class NumberLiteral extends Literal {
char[] source;
public NumberLiteral(char[] token, int s, int e) {
this(s, e);
this.source = token;
}
public NumberLiteral(int s, int e) {
super(s, e);
}
public boolean isValidJavaStatement() {
return false;
}
public char[] source() {
return this.source;
}
protected static char[] removePrefixZerosAndUnderscores(char[] token, boolean isLong) {
int max = token.length;
int start = 0;
int end = max - 1;
if (isLong) {
end--; // remove the 'L' or 'l'
}
if (max > 1 && token[0] == '0') {
if (max > 2 && (token[1] == 'x' || token[1] == 'X')) {
start = 2;
} else if (max > 2 && (token[1] == 'b' || token[1] == 'B')) {
start = 2;
} else {
start = 1;
}
}
boolean modified = false;
boolean ignore = true;
loop:
for (int i = start; i < max; i++) {
char currentChar = token[i];
switch (currentChar) {
case '0':
// this is a prefix '0'
if (ignore && !modified && (i < end)) {
modified = true;
}
break;
case '_':
modified = true;
break loop;
default:
ignore = false;
}
}
if (!modified) {
return token;
}
ignore = true;
StringBuffer buffer = new StringBuffer();
buffer.append(token, 0, start);
loop:
for (int i = start; i < max; i++) {
char currentChar = token[i];
switch (currentChar) {
case '0':
if (ignore && (i < end)) {
// this is a prefix '0'
continue loop;
}
break;
case '_':
continue loop;
default:
ignore = false;
}
buffer.append(currentChar);
}
return buffer.toString().toCharArray();
}
}