| career | drupal | java | mac | mysql | perl | scala | uml | unix  

What this is

This file is included in the "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Other links

The source code

 *                                                                           *
 *  This file is part of the BeanShell Java Scripting distribution.          *
 *  Documentation and updates may be found at      *
 *                                                                           *
 *  Sun Public License Notice:                                               *
 *                                                                           *
 *  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    * 
 *                                                                           *
 *  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.                                          *
 *                                                                           *
 *  GNU Public License Notice:                                               *
 *                                                                           *
 *  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    *
 *  provisions of LGPL are applicable instead of those above. If you wish to *
 *  allow use of your version of this file only under the  terms of the LGPL *
 *  and not to allow others to use your version of this file under the SPL,  *
 *  indicate your decision by deleting the provisions above and replace      *
 *  them with the notice and other provisions required by the LGPL.  If you  *
 *  do not delete the provisions above, a recipient may use your version of  *
 *  this file under either the SPL or the LGPL.                              *
 *                                                                           *
 *  Patrick Niemeyer (                                           *
 *  Author of Learning Java, O'Reilly & Associates                           *
 *                                                 *
 *                                                                           *

package bsh;

class BSHArguments extends SimpleNode
    BSHArguments(int id) { super(id); }

		This node holds a set of arguments for a method invocation or
		constructor call.

		Note: arguments are not currently allowed to be VOID.
		Disallowing VOIDs here was an easy way to support the throwing of a 
		more descriptive error message on use of an undefined argument to a 
		method call (very common).  If it ever turns out that we need to 
		support that for some reason we'll have to re-evaluate how we get 
		"meta-information" about the arguments in the various invoke() methods 
		that take Object [].  We could either pass BSHArguments down to 
		overloaded forms of the methods or throw an exception subtype 
		including the argument position back up, where the error message would
		be compounded.
    public Object[] getArguments( CallStack callstack, Interpreter interpreter)
		throws EvalError
        // evaluate each child
        Object[] args = new Object[jjtGetNumChildren()];
        for(int i = 0; i < args.length; i++)
            args[i] = ((SimpleNode)jjtGetChild(i)).eval(callstack, interpreter);
			if ( args[i] == Primitive.VOID )
				throw new EvalError( "Undefined argument: " + 
					((SimpleNode)jjtGetChild(i)).getText(), this, callstack );

        return args;

... this post is sponsored by my books ...

#1 New Release!

FP Best Seller


new blog posts


Copyright 1998-2021 Alvin Alexander,
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.