forked from OpenRA/OpenRA
/
TypeDictionary.cs
111 lines (95 loc) · 2.6 KB
/
TypeDictionary.cs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
#region Copyright & License Information
/*
* Copyright 2007-2011 The OpenRA Developers (see AUTHORS)
* This file is part of OpenRA, which is free software. It is made
* available to you under the terms of the GNU General Public License
* as published by the Free Software Foundation. For more information,
* see COPYING.
*/
#endregion
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
namespace OpenRA.FileFormats
{
public class TypeDictionary : IEnumerable
{
Dictionary<Type, object> dataSingular = new Dictionary<Type, object>();
Dictionary<Type, List<object>> dataMultiple = new Dictionary<Type, List<object>>();
public void Add( object val )
{
var t = val.GetType();
foreach( var i in t.GetInterfaces() )
InnerAdd( i, val );
foreach( var tt in t.BaseTypes() )
InnerAdd( tt, val );
}
void InnerAdd( Type t, object val )
{
List<object> objs;
object obj;
if( dataMultiple.TryGetValue( t, out objs ) )
objs.Add( val );
else if( dataSingular.TryGetValue( t, out obj ) )
{
dataSingular.Remove( t );
dataMultiple.Add( t, new List<object> { obj, val } );
}
else
dataSingular.Add( t, val );
}
public bool Contains<T>()
{
return dataSingular.ContainsKey(typeof(T)) || dataMultiple.ContainsKey(typeof(T));
}
public T Get<T>()
{
if (dataMultiple.ContainsKey(typeof(T)))
throw new InvalidOperationException("TypeDictionary contains multiple instance of type `{0}`".F(typeof(T)));
object ret;
if (!dataSingular.TryGetValue(typeof(T), out ret))
throw new InvalidOperationException("TypeDictionary does not contain instance of type `{0}`".F(typeof(T)));
return (T)ret;
}
public T GetOrDefault<T>()
{
return (T)GetOrDefault(typeof(T));
}
public object GetOrDefault(Type t)
{
if (dataMultiple.ContainsKey(t))
throw new InvalidOperationException("TypeDictionary contains multiple instances of type `{0}`".F(t));
object ret;
if (!dataSingular.TryGetValue(t, out ret))
return null;
return ret;
}
public IEnumerable<T> WithInterface<T>()
{
List<object> objs;
object obj;
if( dataMultiple.TryGetValue( typeof( T ), out objs ) )
return objs.Cast<T>();
else if( dataSingular.TryGetValue( typeof( T ), out obj ) )
return new T[] { (T)obj };
else
return new T[ 0 ];
}
public IEnumerator GetEnumerator()
{
return WithInterface<object>().GetEnumerator();
}
}
public static class TypeExts
{
public static IEnumerable<Type> BaseTypes( this Type t )
{
while( t != null )
{
yield return t;
t = t.BaseType;
}
}
}
}