122 lines
5.1 KiB
C#
122 lines
5.1 KiB
C#
/*
|
|
* Copyright (c) Contributors, http://opensimulator.org/
|
|
* See CONTRIBUTORS.TXT for a full list of copyright holders.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
* * Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* * Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* * Neither the name of the OpenSimulator Project nor the
|
|
* names of its contributors may be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
|
|
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
|
|
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
|
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
|
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
using System;
|
|
using System.Collections.Generic;
|
|
using System.Reflection;
|
|
using System.Reflection.Emit;
|
|
|
|
namespace OpenSim.Region.ScriptEngine.Yengine
|
|
{
|
|
|
|
public class DelegateCommon
|
|
{
|
|
private string sig; // rettype(arg1type,arg2type,...), eg, "void(list,string,integer)"
|
|
private Type type; // resultant delegate type
|
|
|
|
private readonly static Dictionary<string, DelegateCommon> delegateCommons = new();
|
|
private readonly static Dictionary<Type, DelegateCommon> delegateCommonsBySysType = new();
|
|
private static ModuleBuilder delegateModuleBuilder = null;
|
|
public static Type[] constructorArgTypes = new Type[] { typeof(object), typeof(IntPtr) };
|
|
|
|
private DelegateCommon()
|
|
{
|
|
}
|
|
|
|
public static Type GetType(System.Type ret, System.Type[] args, string sig)
|
|
{
|
|
DelegateCommon dc;
|
|
lock(delegateCommons)
|
|
{
|
|
if(!delegateCommons.TryGetValue(sig, out dc))
|
|
{
|
|
dc = new DelegateCommon
|
|
{
|
|
sig = sig,
|
|
type = CreateDelegateType(sig, ret, args)
|
|
};
|
|
delegateCommons.Add(sig, dc);
|
|
delegateCommonsBySysType.Add(dc.type, dc);
|
|
}
|
|
}
|
|
return dc.type;
|
|
}
|
|
|
|
public static Type TryGetType(string sig)
|
|
{
|
|
DelegateCommon dc;
|
|
lock(delegateCommons)
|
|
{
|
|
if(!delegateCommons.TryGetValue(sig, out dc))
|
|
dc = null;
|
|
}
|
|
return dc?.type;
|
|
}
|
|
|
|
public static string TryGetName(Type t)
|
|
{
|
|
DelegateCommon dc;
|
|
lock(delegateCommons)
|
|
{
|
|
if(!delegateCommonsBySysType.TryGetValue(t, out dc))
|
|
dc = null;
|
|
}
|
|
return dc?.sig;
|
|
}
|
|
|
|
// http://blog.bittercoder.com/PermaLink,guid,a770377a-b1ad-4590-9145-36381757a52b.aspx
|
|
private static Type CreateDelegateType(string name, Type retType, Type[] argTypes)
|
|
{
|
|
if(delegateModuleBuilder == null)
|
|
{
|
|
AssemblyName assembly = new()
|
|
{
|
|
Name = "CustomDelegateAssembly"
|
|
};
|
|
AssemblyBuilder assemblyBuilder = AssemblyBuilder.DefineDynamicAssembly(assembly, AssemblyBuilderAccess.RunAndCollect);
|
|
delegateModuleBuilder = assemblyBuilder.DefineDynamicModule("CustomDelegateModule");
|
|
}
|
|
|
|
TypeBuilder typeBuilder = delegateModuleBuilder.DefineType(name,
|
|
TypeAttributes.Public | TypeAttributes.Sealed | TypeAttributes.Class |
|
|
TypeAttributes.AnsiClass | TypeAttributes.AutoClass, typeof(MulticastDelegate));
|
|
|
|
ConstructorBuilder constructorBuilder = typeBuilder.DefineConstructor(
|
|
MethodAttributes.RTSpecialName | MethodAttributes.HideBySig | MethodAttributes.Public,
|
|
CallingConventions.Standard, constructorArgTypes);
|
|
constructorBuilder.SetImplementationFlags(MethodImplAttributes.Runtime | MethodImplAttributes.Managed);
|
|
|
|
MethodBuilder methodBuilder = typeBuilder.DefineMethod("Invoke",
|
|
MethodAttributes.Public | MethodAttributes.HideBySig | MethodAttributes.NewSlot |
|
|
MethodAttributes.Virtual, retType, argTypes);
|
|
methodBuilder.SetImplementationFlags(MethodImplAttributes.Managed | MethodImplAttributes.Runtime);
|
|
|
|
return typeBuilder.CreateType();
|
|
}
|
|
}
|
|
}
|