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