diff options
Diffstat (limited to 'OpenSim/Region/ScriptEngine/XMREngine/MMRDelegateCommon.cs')
-rw-r--r-- | OpenSim/Region/ScriptEngine/XMREngine/MMRDelegateCommon.cs | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/OpenSim/Region/ScriptEngine/XMREngine/MMRDelegateCommon.cs b/OpenSim/Region/ScriptEngine/XMREngine/MMRDelegateCommon.cs new file mode 100644 index 0000000..48b665b --- /dev/null +++ b/OpenSim/Region/ScriptEngine/XMREngine/MMRDelegateCommon.cs | |||
@@ -0,0 +1,106 @@ | |||
1 | /* | ||
2 | * Copyright (c) Contributors, http://opensimulator.org/ | ||
3 | * See CONTRIBUTORS.TXT for a full list of copyright holders. | ||
4 | * | ||
5 | * Redistribution and use in source and binary forms, with or without | ||
6 | * modification, are permitted provided that the following conditions are met: | ||
7 | * * Redistributions of source code must retain the above copyright | ||
8 | * notice, this list of conditions and the following disclaimer. | ||
9 | * * Redistributions in binary form must reproduce the above copyright | ||
10 | * notice, this list of conditions and the following disclaimer in the | ||
11 | * documentation and/or other materials provided with the distribution. | ||
12 | * * Neither the name of the OpenSimulator Project nor the | ||
13 | * names of its contributors may be used to endorse or promote products | ||
14 | * derived from this software without specific prior written permission. | ||
15 | * | ||
16 | * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY | ||
17 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | ||
18 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | ||
19 | * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY | ||
20 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | ||
21 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | ||
22 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND | ||
23 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | ||
24 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | ||
25 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
26 | */ | ||
27 | |||
28 | using System; | ||
29 | using System.Collections.Generic; | ||
30 | using System.Reflection; | ||
31 | using System.Reflection.Emit; | ||
32 | |||
33 | namespace OpenSim.Region.ScriptEngine.XMREngine { | ||
34 | |||
35 | public class DelegateCommon { | ||
36 | private string sig; // rettype(arg1type,arg2type,...), eg, "void(list,string,integer)" | ||
37 | private Type type; // resultant delegate type | ||
38 | |||
39 | private static Dictionary<string, DelegateCommon> delegateCommons = new Dictionary<string, DelegateCommon> (); | ||
40 | private static Dictionary<Type, DelegateCommon> delegateCommonsBySysType = new Dictionary<Type, DelegateCommon> (); | ||
41 | private static ModuleBuilder delegateModuleBuilder = null; | ||
42 | public static Type[] constructorArgTypes = new Type[] { typeof (object), typeof (IntPtr) }; | ||
43 | |||
44 | private DelegateCommon () { } | ||
45 | |||
46 | public static Type GetType (System.Type ret, System.Type[] args, string sig) | ||
47 | { | ||
48 | DelegateCommon dc; | ||
49 | lock (delegateCommons) { | ||
50 | if (!delegateCommons.TryGetValue (sig, out dc)) { | ||
51 | dc = new DelegateCommon (); | ||
52 | dc.sig = sig; | ||
53 | dc.type = CreateDelegateType (sig, ret, args); | ||
54 | delegateCommons.Add (sig, dc); | ||
55 | delegateCommonsBySysType.Add (dc.type, dc); | ||
56 | } | ||
57 | } | ||
58 | return dc.type; | ||
59 | } | ||
60 | |||
61 | public static Type TryGetType (string sig) | ||
62 | { | ||
63 | DelegateCommon dc; | ||
64 | lock (delegateCommons) { | ||
65 | if (!delegateCommons.TryGetValue (sig, out dc)) dc = null; | ||
66 | } | ||
67 | return (dc == null) ? null : dc.type; | ||
68 | } | ||
69 | |||
70 | public static string TryGetName (Type t) | ||
71 | { | ||
72 | DelegateCommon dc; | ||
73 | lock (delegateCommons) { | ||
74 | if (!delegateCommonsBySysType.TryGetValue (t, out dc)) dc = null; | ||
75 | } | ||
76 | return (dc == null) ? null : dc.sig; | ||
77 | } | ||
78 | |||
79 | // http://blog.bittercoder.com/PermaLink,guid,a770377a-b1ad-4590-9145-36381757a52b.aspx | ||
80 | private static Type CreateDelegateType (string name, Type retType, Type[] argTypes) | ||
81 | { | ||
82 | if (delegateModuleBuilder == null) { | ||
83 | AssemblyName assembly = new AssemblyName(); | ||
84 | assembly.Name = "CustomDelegateAssembly"; | ||
85 | AssemblyBuilder assemblyBuilder = AppDomain.CurrentDomain.DefineDynamicAssembly(assembly, AssemblyBuilderAccess.Run); | ||
86 | delegateModuleBuilder = assemblyBuilder.DefineDynamicModule("CustomDelegateModule"); | ||
87 | } | ||
88 | |||
89 | TypeBuilder typeBuilder = delegateModuleBuilder.DefineType(name, | ||
90 | TypeAttributes.Public | TypeAttributes.Sealed | TypeAttributes.Class | | ||
91 | TypeAttributes.AnsiClass | TypeAttributes.AutoClass, typeof (MulticastDelegate)); | ||
92 | |||
93 | ConstructorBuilder constructorBuilder = typeBuilder.DefineConstructor( | ||
94 | MethodAttributes.RTSpecialName | MethodAttributes.HideBySig | MethodAttributes.Public, | ||
95 | CallingConventions.Standard, constructorArgTypes); | ||
96 | constructorBuilder.SetImplementationFlags(MethodImplAttributes.Runtime | MethodImplAttributes.Managed); | ||
97 | |||
98 | MethodBuilder methodBuilder = typeBuilder.DefineMethod("Invoke", | ||
99 | MethodAttributes.Public | MethodAttributes.HideBySig | MethodAttributes.NewSlot | | ||
100 | MethodAttributes.Virtual, retType, argTypes); | ||
101 | methodBuilder.SetImplementationFlags(MethodImplAttributes.Managed | MethodImplAttributes.Runtime); | ||
102 | |||
103 | return typeBuilder.CreateType(); | ||
104 | } | ||
105 | } | ||
106 | } | ||