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Jelle Luteijn 2022-05-15 11:19:49 +02:00
parent 16e76d6b31
commit 484dbfc9d9
529 changed files with 113694 additions and 0 deletions
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AspClassic.Scripting/Utils/ReflectionUtils.cs Normal file
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using System;
using System.Reflection;
using System.Reflection.Emit;
using System.Runtime.CompilerServices;
using System.Threading;
namespace AspClassic.Scripting.Utils;
internal static class ReflectionUtils
{
public const char GenericArityDelimiter = '`';
private static AssemblyBuilder _assembly;
private static ModuleBuilder _modBuilder;
private static int _typeCount;
private static readonly Type[] _DelegateCtorSignature = new Type[2]
{
typeof(object),
typeof(IntPtr)
};
private static TypeBuilder DefineDelegateType(string name)
{
if (_assembly == null)
{
Interlocked.CompareExchange(ref _assembly, AppDomain.CurrentDomain.DefineDynamicAssembly(new AssemblyName("DynamicDelegates"), AssemblyBuilderAccess.Run), null);
lock (_assembly)
{
if (_modBuilder == null)
{
_modBuilder = _assembly.DefineDynamicModule("DynamicDelegates");
}
}
}
return _modBuilder.DefineType(name + Interlocked.Increment(ref _typeCount), TypeAttributes.Public | TypeAttributes.Sealed | TypeAttributes.AutoClass, typeof(MulticastDelegate));
}
public static Type GetObjectCallSiteDelegateType(int paramCnt)
{
switch (paramCnt)
{
case 0:
return typeof(Func<CallSite, object, object>);
case 1:
return typeof(Func<CallSite, object, object, object>);
case 2:
return typeof(Func<CallSite, object, object, object, object>);
case 3:
return typeof(Func<CallSite, object, object, object, object, object>);
case 4:
return typeof(Func<CallSite, object, object, object, object, object, object>);
case 5:
return typeof(Func<CallSite, object, object, object, object, object, object, object>);
case 6:
return typeof(Func<CallSite, object, object, object, object, object, object, object, object>);
case 7:
return typeof(Func<CallSite, object, object, object, object, object, object, object, object, object>);
case 8:
return typeof(Func<CallSite, object, object, object, object, object, object, object, object, object, object>);
case 9:
return typeof(Func<CallSite, object, object, object, object, object, object, object, object, object, object, object>);
case 10:
return typeof(Func<CallSite, object, object, object, object, object, object, object, object, object, object, object, object>);
case 11:
return typeof(Func<CallSite, object, object, object, object, object, object, object, object, object, object, object, object, object>);
case 12:
return typeof(Func<CallSite, object, object, object, object, object, object, object, object, object, object, object, object, object, object>);
case 13:
return typeof(Func<CallSite, object, object, object, object, object, object, object, object, object, object, object, object, object, object, object>);
case 14:
return typeof(Func<CallSite, object, object, object, object, object, object, object, object, object, object, object, object, object, object, object, object>);
default:
{
Type[] array = new Type[paramCnt + 2];
array[0] = typeof(CallSite);
array[1] = typeof(object);
for (int i = 0; i < paramCnt; i++)
{
array[i + 2] = typeof(object);
}
TypeBuilder typeBuilder = DefineDelegateType("Delegate");
typeBuilder.DefineConstructor(MethodAttributes.Public | MethodAttributes.HideBySig | MethodAttributes.RTSpecialName, CallingConventions.Standard, _DelegateCtorSignature).SetImplementationFlags(MethodImplAttributes.CodeTypeMask);
typeBuilder.DefineMethod("Invoke", MethodAttributes.Public | MethodAttributes.Virtual | MethodAttributes.HideBySig | MethodAttributes.VtableLayoutMask, typeof(object), array).SetImplementationFlags(MethodImplAttributes.CodeTypeMask);
return typeBuilder.CreateType();
}
}
}
}