/***** BEGIN LICENSE BLOCK *****
* Version: CPL 1.0/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Common Public
* License Version 1.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.eclipse.org/legal/cpl-v10.html
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* Copyright (C) 2006 Mirko Stocker <me@misto.ch>
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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package org.rubypeople.rdt.core.formatter.rewriter;
import java.util.EmptyStackException;
import java.util.Stack;
public class BooleanStateStack {
private final Stack<Boolean> states = new Stack<Boolean>();
private final boolean defaultValue;
public BooleanStateStack(boolean b, boolean defaultValue) {
set(b);
this.defaultValue = defaultValue;
}
public void set(boolean b) {
states.push(Boolean.valueOf(b));
}
public void revert() {
states.pop();
}
public boolean isTrue() {
try {
return ((Boolean) states.peek()).booleanValue();
} catch (EmptyStackException e) {
return defaultValue;
}
}
}