/jEdit/tags/jedit-4-2-pre4/bsh/BSHAmbiguousName.java

/*****************************************************************************
 *                                                                           *
 *  This file is part of the BeanShell Java Scripting distribution.          *
 *  Documentation and updates may be found at http://www.beanshell.org/      *
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 *  Sun Public License Notice:                                               *
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 *  The contents of this file are subject to the Sun Public License Version  *
 *  1.0 (the "License"); you may not use this file except in compliance with *
 *  the License. A copy of the License is available at http://www.sun.com    * 
 *                                                                           *
 *  The Original Code is BeanShell. The Initial Developer of the Original    *
 *  Code is Pat Niemeyer. Portions created by Pat Niemeyer are Copyright     *
 *  (C) 2000.  All Rights Reserved.                                          *
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 *  GNU Public License Notice:                                               *
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 *  Alternatively, the contents of this file may be used under the terms of  *
 *  the GNU Lesser General Public License (the "LGPL"), in which case the    *
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 *                                                                           *
 *  Patrick Niemeyer (pat@pat.net)                                           *
 *  Author of Learning Java, O'Reilly & Associates                           *
 *  http://www.pat.net/~pat/                                                 *
 *                                                                           *
 *****************************************************************************/


package bsh;

class BSHAmbiguousName extends SimpleNode
{
    public String text;

    BSHAmbiguousName(int id) { super(id); }
	
    public Name getName( NameSpace namespace )
    {
        return namespace.getNameResolver( text );
    }

    public Object toObject( CallStack callstack, Interpreter interpreter ) 
		throws EvalError
    {
		return toObject( callstack, interpreter, false );
    }

    Object toObject( 
		CallStack callstack, Interpreter interpreter, boolean forceClass ) 
		throws EvalError
    {
		try {
        	return 
				getName( callstack.top() ).toObject( 
					callstack, interpreter, forceClass );
		} catch ( UtilEvalError e ) {
			throw e.toEvalError( this, callstack );
		}
    }

    public Class toClass( CallStack callstack, Interpreter interpreter ) 
		throws EvalError
    {
		try {
        	return getName( callstack.top() ).toClass();
		} catch ( ClassNotFoundException e ) {
			throw new EvalError( e.getMessage(), this, callstack );
		} catch ( UtilEvalError e2 ) {
			// ClassPathException is a type of UtilEvalError
			throw e2.toEvalError( this, callstack );
		}
    }

    public LHS toLHS( CallStack callstack, Interpreter interpreter)
		throws EvalError
    {
		try {
			return getName( callstack.top() ).toLHS( callstack, interpreter );
		} catch ( UtilEvalError e ) {
			throw e.toEvalError( this, callstack );
		}
    }

	/*
		The interpretation of an ambiguous name is context sensitive.
		We disallow a generic eval( ).
	*/
    public Object eval( CallStack callstack, Interpreter interpreter ) 
		throws EvalError
    {
		throw new InterpreterError( 
			"Don't know how to eval an ambiguous name!"
			+"  Use toObject() if you want an object." );
    }

	public String toString() {
		return "AmbigousName: "+text;
	}
}