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
33namespace 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