/*****************************************************************************
* *
* This file is part of the BeanShell Java Scripting distribution. *
* Documentation and updates may be found at http://www.beanshell.org/ *
* *
* 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 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. *
* *
* 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 ([email protected]) *
* Author of Learning Java, O'Reilly & Associates *
* http://www.pat.net/~pat/ *
* *
*****************************************************************************/
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;
}
}
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