/*
 * [The "BSD license"]
 *  Copyright (c) 2011 Terence Parr
 *  All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions
 *  are met:
 *  1. Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *  3. The name of the author may not be used to endorse or promote products
 *     derived from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 *  IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 *  OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 *  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 *  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package org.stringtemplate.v4.debug;

import org.stringtemplate.v4.InstanceScope;

public class EvalExprEvent extends InterpEvent {
    /** Index of first char in template. */
    public final int exprStartChar;
    /** Index of last char in template (inclusive). */
    public final int exprStopChar;
    public final String expr;
    public EvalExprEvent(InstanceScope scope, int start, int stop,
                         int exprStartChar, int exprStopChar)
    {
        super(scope, start, stop);
        this.exprStartChar = exprStartChar;
        this.exprStopChar = exprStopChar;
        if ( exprStartChar >=0 && exprStopChar >=0 ) {
            expr = scope.st.impl.template.substring(exprStartChar, exprStopChar +1);
        }
        else {
            expr = "";
        }
    }

    @Override
    public String toString() {
        return getClass().getSimpleName()+"{" +
               "self=" + scope.st +
               ", expr='" + expr + '\'' +
               ", exprStartChar=" + exprStartChar +
               ", exprStopChar=" + exprStopChar +
               ", start=" + outputStartChar +
               ", stop=" + outputStopChar +
               '}';
    }

}
