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
33using System;
34using System.Collections.Generic;
35#if DEBUG
36using System.Linq;
37#endif
38
39namespace 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