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 namespace Antlr.Runtime.JavaExtensions
34 {
35     using System.Collections.Generic;
36     using System.Linq;
37 
38     using IDictionary = System.Collections.IDictionary;
39     using ObsoleteAttribute = System.ObsoleteAttribute;
40 
41     public static class DictionaryExtensions
42     {
43         [Obsolete]
44         public static bool containsKey( this IDictionary map, object key )
45         {
46             return map.Contains( key );
47         }
48 
49         [Obsolete]
50         public static object get( this IDictionary map, object key )
51         {
52             return map[key];
53         }
54 
55         public static TValue get<TKey, TValue>( this IDictionary<TKey, TValue> map, TKey key )
56         {
57             TValue value;
58             if ( map.TryGetValue( key, out value ) )
59                 return value;
60 
61             if ( typeof( TValue ).IsValueType )
62                 throw new KeyNotFoundException();
63 
64             return default( TValue );
65         }
66 
67         // disambiguates
68         public static TValue get<TKey, TValue>( this Dictionary<TKey, TValue> map, TKey key )
69         {
70             TValue value;
71             if ( map.TryGetValue( key, out value ) )
72                 return value;
73 
74             if ( typeof( TValue ).IsValueType )
75                 throw new KeyNotFoundException();
76 
77             return default( TValue );
78         }
79 
80         public static TValue get<TKey, TValue>( this SortedList<TKey, TValue> map, TKey key )
81         {
82             TValue value;
83             if ( map.TryGetValue( key, out value ) )
84                 return value;
85 
86             if ( typeof( TValue ).IsValueType )
87                 throw new KeyNotFoundException();
88 
89             return default( TValue );
90         }
91 
92         [Obsolete]
93         public static void put( this IDictionary map, object key, object value )
94         {
95             map[key] = value;
96         }
97 
98         [Obsolete]
99         public static void put<TKey, TValue>( this IDictionary<TKey, TValue> map, TKey key, TValue value )
100         {
101             map[key] = value;
102         }
103 
104         [Obsolete]
105         public static void put<TKey, TValue>( this Dictionary<TKey, TValue> map, TKey key, TValue value )
106         {
107             map[key] = value;
108         }
109 
110         [Obsolete]
111         public static HashSet<object> keySet( this IDictionary map )
112         {
113             return new HashSet<object>( map.Keys.Cast<object>() );
114         }
115 
116         [Obsolete]
117         public static HashSet<TKey> keySet<TKey, TValue>( this IDictionary<TKey, TValue> map )
118         {
119             return new HashSet<TKey>( map.Keys );
120         }
121 
122         // disambiguates for Dictionary, which implements both IDictionary<T,K> and IDictionary
123         [Obsolete]
124         public static HashSet<TKey> keySet<TKey, TValue>( this Dictionary<TKey, TValue> map )
125         {
126             return new HashSet<TKey>( map.Keys );
127         }
128 
129         [Obsolete]
130         public static HashSet<object> keySet<TKey, TValue>( this SortedList<TKey, TValue> map )
131         {
132             return new HashSet<object>( map.Keys.Cast<object>() );
133         }
134     }
135 }
136