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      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