1 /*
2  * [The "BSD licence"]
3  * Copyright (c) 2005-2008 Terence Parr
4  * All rights reserved.
5  *
6  * Conversion to C#:
7  * Copyright (c) 2008 Sam Harwell, Pixel Mine, Inc.
8  * All rights reserved.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  * 3. The name of the author may not be used to endorse or promote products
19  *    derived from this software without specific prior written permission.
20  *
21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31  */
32 
33 using System;
34 using System.Collections.Generic;
35 #if DEBUG
36 using System.Linq;
37 #endif
38 
39 namespace Antlr.Runtime.JavaExtensions
40 {
41     public static class StackExtensions
42     {
43 #if DEBUG
44         [Obsolete]
45         public static T elementAt<T>( this Stack<T> stack, int index )
46         {
47             return stack.ElementAt( index );
48         }
49 
50         [Obsolete]
51         public static T peek<T>( this Stack<T> stack )
52         {
53             return stack.Peek();
54         }
55 
56         [Obsolete]
57         public static T pop<T>( this Stack<T> stack )
58         {
59             return stack.Pop();
60         }
61 
62         [Obsolete]
63         public static void push<T>( this Stack<T> stack, T obj )
64         {
65             stack.Push( obj );
66         }
67 
68         [Obsolete]
69         public static int size<T>( this Stack<T> stack )
70         {
71             return stack.Count;
72         }
73 #endif
74 
75         public static void setSize<T>( this Stack<T> stack, int size )
76         {
77             if ( size > stack.Count )
78                 throw new ArgumentException();
79 
80             while ( stack.Count > size )
81                 stack.Pop();
82         }
83     }
84 }
85