/*
 * TclNumArgsException.java
 *
 * Copyright (c) 1997 Sun Microsystems, Inc.
 *
 * See the file "license.terms" for information on usage and
 * redistribution of this file, and for a DISCLAIMER OF ALL
 * WARRANTIES.
 * 
 * RCS: @(#) $Id: TclVarException.java,v 1.1.1.1 1998/10/14 21:09:19 cvsadmin Exp $
 *
 */

package tcl.lang;

/**
 * This exception is used to report variable errors in Tcl.
 */

class TclVarException extends TclException {

    /**
     * Creates an exception with the appropiate Tcl error message to
     * indicate an error with variable access.
     *
     * @param interp currrent interpreter.
     * @param name1 first part of a variable name.
     * @param name2 second part of a variable name. May be null.
     * @param operation either "read" or "set".
     * @param reason a string message to explain why the operation fails..
     */

    TclVarException(Interp interp, String name1, String name2,
	    String operation, String reason)
    {
	super(TCL.ERROR);
	if (interp != null) {
	    interp.resetResult();
	    if (name2 == null) {
		interp.setResult("can't " + operation
		        + " \"" + name1 + "\": " + reason);
	    } else {
		interp.setResult("can't " + operation
		        + " \"" + name1 + "(" + name2 + ")\": " + reason);
	    }
	}
    }
}