/*****************************************************************************
* Licensed to the Apache Software Foundation (ASF) under one *
* or more contributor license agreements. See the NOTICE file *
* distributed with this work for additional information *
* regarding copyright ownership. The ASF licenses this file *
* to you under the Apache License, Version 2.0 (the *
* "License"); you may not use this file except in compliance *
* with the License. You may obtain a copy of the License at *
* *
* http://www.apache.org/licenses/LICENSE-2.0 *
* *
* Unless required by applicable law or agreed to in writing, *
* software distributed under the License is distributed on an *
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY *
* KIND, either express or implied. See the License for the *
* specific language governing permissions and limitations *
* under the License. *
* *
* *
* This file is part of the BeanShell Java Scripting distribution. *
* Documentation and updates may be found at http://www.beanshell.org/ *
* Patrick Niemeyer (pat@pat.net) *
* 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;
}
}