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A library to expose exact char-for-char position information of Ruby syntax.

There is a newer version: 0.5.3

/***** 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 
 * 
 * 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"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
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package org.jrubyparser.rewriter.utils;

public class CallDepth {
	private int nestedCallDepth;
	private int savedNestedCallDepth;
	
	public void enterCall() {
		nestedCallDepth++;
	}

	public void leaveCall() {
		nestedCallDepth--;
		if (nestedCallDepth < 0) nestedCallDepth = 0;
	}

	public boolean inCall() {
		return nestedCallDepth > 0;
	}

	/*
	 * Those methods are used do disable the output of parantheses in arguments
	 * of operator-calls
	 */
	public void disableCallDepth() {
		savedNestedCallDepth = nestedCallDepth;
		nestedCallDepth = 0;
	}

	public void enableCallDepth() {
		nestedCallDepth = savedNestedCallDepth;
	}
}