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/jEdit/tags/jedit-4-2-pre14/bsh/BSHFormalParameter.java

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Java | 74 lines | 26 code | 7 blank | 41 comment | 2 complexity | de65588acc61ca20ef823f0ebc6bd3f0 MD5 | raw file
 1/*****************************************************************************
 2 *                                                                           *
 3 *  This file is part of the BeanShell Java Scripting distribution.          *
 4 *  Documentation and updates may be found at http://www.beanshell.org/      *
 5 *                                                                           *
 6 *  Sun Public License Notice:                                               *
 7 *                                                                           *
 8 *  The contents of this file are subject to the Sun Public License Version  *
 9 *  1.0 (the "License"); you may not use this file except in compliance with *
10 *  the License. A copy of the License is available at http://www.sun.com    * 
11 *                                                                           *
12 *  The Original Code is BeanShell. The Initial Developer of the Original    *
13 *  Code is Pat Niemeyer. Portions created by Pat Niemeyer are Copyright     *
14 *  (C) 2000.  All Rights Reserved.                                          *
15 *                                                                           *
16 *  GNU Public License Notice:                                               *
17 *                                                                           *
18 *  Alternatively, the contents of this file may be used under the terms of  *
19 *  the GNU Lesser General Public License (the "LGPL"), in which case the    *
20 *  provisions of LGPL are applicable instead of those above. If you wish to *
21 *  allow use of your version of this file only under the  terms of the LGPL *
22 *  and not to allow others to use your version of this file under the SPL,  *
23 *  indicate your decision by deleting the provisions above and replace      *
24 *  them with the notice and other provisions required by the LGPL.  If you  *
25 *  do not delete the provisions above, a recipient may use your version of  *
26 *  this file under either the SPL or the LGPL.                              *
27 *                                                                           *
28 *  Patrick Niemeyer (pat@pat.net)                                           *
29 *  Author of Learning Java, O'Reilly & Associates                           *
30 *  http://www.pat.net/~pat/                                                 *
31 *                                                                           *
32 *****************************************************************************/
33
34package bsh;
35
36/**
37	A formal parameter declaration.
38	For loose variable declaration type is null.
39*/
40class BSHFormalParameter extends SimpleNode
41{
42	public static final Class UNTYPED = null;
43	public String name;
44	// unsafe caching of type here
45	public Class type;
46
47	BSHFormalParameter(int id) { super(id); }
48
49	public String getTypeDescriptor( 
50		CallStack callstack, Interpreter interpreter, String defaultPackage ) 
51	{
52		if ( jjtGetNumChildren() > 0 )
53			return ((BSHType)jjtGetChild(0)).getTypeDescriptor( 
54				callstack, interpreter, defaultPackage );
55		else
56			// this will probably not get used
57			return "Ljava/lang/Object;";  // Object type
58	}
59
60	/**
61		Evaluate the type.
62	*/
63	public Object eval( CallStack callstack, Interpreter interpreter) 
64		throws EvalError
65	{
66		if ( jjtGetNumChildren() > 0 )
67			type = ((BSHType)jjtGetChild(0)).getType( callstack, interpreter );
68		else
69			type = UNTYPED;
70
71		return type;
72	}
73}
74