private static void CreateDynamicAssembly()
{
new SecurityPermission(SecurityPermissionFlag.ControlEvidence).Assert();
Type[] types = new Type[] { typeof(Type), typeof(Type), typeof(string) };
MethodInfo methodInfo = typeof(Delegate).GetMethod("CreateDelegate", types);
DynamicMethod method = new DynamicMethod("CreateDelegate", typeof(Delegate), types);
method.DefineParameter(1, ParameterAttributes.In, "delegateType");
method.DefineParameter(2, ParameterAttributes.In, "targetType");
method.DefineParameter(3, ParameterAttributes.In, "methodName");
ILGenerator iLGenerator = method.GetILGenerator(5);
iLGenerator.Emit(OpCodes.Ldarg_0);
iLGenerator.Emit(OpCodes.Ldarg_1);
iLGenerator.Emit(OpCodes.Ldarg_2);
iLGenerator.EmitCall(OpCodes.Call, methodInfo, null);
iLGenerator.Emit(OpCodes.Ret);
s_CreateDelegate1 = (CreateDelegate1Delegate)method.CreateDelegate(typeof(CreateDelegate1Delegate));
types = new Type[] { typeof(Type), typeof(object), typeof(string) };
methodInfo = typeof(Delegate).GetMethod("CreateDelegate", types);
method = new DynamicMethod("CreateDelegate", typeof(Delegate), types);
method.DefineParameter(1, ParameterAttributes.In, "delegateType");
method.DefineParameter(2, ParameterAttributes.In, "target");
method.DefineParameter(3, ParameterAttributes.In, "methodName");
iLGenerator = method.GetILGenerator(5);
iLGenerator.Emit(OpCodes.Ldarg_0);
iLGenerator.Emit(OpCodes.Ldarg_1);
iLGenerator.Emit(OpCodes.Ldarg_2);
iLGenerator.EmitCall(OpCodes.Call, methodInfo, null);
iLGenerator.Emit(OpCodes.Ret);
s_CreateDelegate2 = (CreateDelegate2Delegate)method.CreateDelegate(typeof(CreateDelegate2Delegate));
types = new Type[] { typeof(Type), typeof(object[]) };
methodInfo = typeof(Activator).GetMethod("CreateInstance", types);
method = new DynamicMethod("CreateInstance", typeof(object), types);
method.DefineParameter(1, ParameterAttributes.In, "type");
method.DefineParameter(2, ParameterAttributes.In, "arguments");
iLGenerator = method.GetILGenerator(4);
iLGenerator.Emit(OpCodes.Ldarg_0);
iLGenerator.Emit(OpCodes.Ldarg_1);
iLGenerator.EmitCall(OpCodes.Call, methodInfo, null);
iLGenerator.Emit(OpCodes.Ret);
s_CreateInstance = (CreateInstanceDelegate)method.CreateDelegate(typeof(CreateInstanceDelegate));
types = new Type[] { typeof(object), typeof(object[]) };
Type[] parameterTypes = new Type[] { typeof(MethodInfo), typeof(object), typeof(object[]) };
methodInfo = typeof(MethodInfo).GetMethod("Invoke", types);
method = new DynamicMethod("InvokeMethod", typeof(object), parameterTypes);
method.DefineParameter(1, ParameterAttributes.In, "method");
method.DefineParameter(2, ParameterAttributes.In, "instance");
method.DefineParameter(3, ParameterAttributes.In, "args");
iLGenerator = method.GetILGenerator(5);
iLGenerator.Emit(OpCodes.Ldarg_0);
iLGenerator.Emit(OpCodes.Ldarg_1);
iLGenerator.Emit(OpCodes.Ldarg_2);
iLGenerator.EmitCall(OpCodes.Callvirt, methodInfo, null);
iLGenerator.Emit(OpCodes.Ret);
s_InvokeMethod = (InvokeMethodDelegate)method.CreateDelegate(typeof(InvokeMethodDelegate));
}
private static void CreateDynamicAssembly()
{
new SecurityPermission(SecurityPermissionFlag.ControlEvidence).Assert();
Type[] types = new Type[] { typeof(Type), typeof(Type), typeof(string) };
MethodInfo methodInfo = typeof(Delegate).GetMethod("CreateDelegate", types);
DynamicMethod method = new DynamicMethod("CreateDelegate", typeof(Delegate), types);
method.DefineParameter(1, ParameterAttributes.In, "delegateType");
method.DefineParameter(2, ParameterAttributes.In, "targetType");
method.DefineParameter(3, ParameterAttributes.In, "methodName");
ILGenerator iLGenerator = method.GetILGenerator(5);
iLGenerator.Emit(OpCodes.Ldarg_0);
iLGenerator.Emit(OpCodes.Ldarg_1);
iLGenerator.Emit(OpCodes.Ldarg_2);
iLGenerator.EmitCall(OpCodes.Call, methodInfo, null);
iLGenerator.Emit(OpCodes.Ret);
s_CreateDelegate1 = (CreateDelegate1Delegate) method.CreateDelegate(typeof(CreateDelegate1Delegate));
types = new Type[] { typeof(Type), typeof(object), typeof(string) };
methodInfo = typeof(Delegate).GetMethod("CreateDelegate", types);
method = new DynamicMethod("CreateDelegate", typeof(Delegate), types);
method.DefineParameter(1, ParameterAttributes.In, "delegateType");
method.DefineParameter(2, ParameterAttributes.In, "target");
method.DefineParameter(3, ParameterAttributes.In, "methodName");
iLGenerator = method.GetILGenerator(5);
iLGenerator.Emit(OpCodes.Ldarg_0);
iLGenerator.Emit(OpCodes.Ldarg_1);
iLGenerator.Emit(OpCodes.Ldarg_2);
iLGenerator.EmitCall(OpCodes.Call, methodInfo, null);
iLGenerator.Emit(OpCodes.Ret);
s_CreateDelegate2 = (CreateDelegate2Delegate) method.CreateDelegate(typeof(CreateDelegate2Delegate));
types = new Type[] { typeof(Type), typeof(object[]) };
methodInfo = typeof(Activator).GetMethod("CreateInstance", types);
method = new DynamicMethod("CreateInstance", typeof(object), types);
method.DefineParameter(1, ParameterAttributes.In, "type");
method.DefineParameter(2, ParameterAttributes.In, "arguments");
iLGenerator = method.GetILGenerator(4);
iLGenerator.Emit(OpCodes.Ldarg_0);
iLGenerator.Emit(OpCodes.Ldarg_1);
iLGenerator.EmitCall(OpCodes.Call, methodInfo, null);
iLGenerator.Emit(OpCodes.Ret);
s_CreateInstance = (CreateInstanceDelegate) method.CreateDelegate(typeof(CreateInstanceDelegate));
types = new Type[] { typeof(object), typeof(object[]) };
Type[] parameterTypes = new Type[] { typeof(MethodInfo), typeof(object), typeof(object[]) };
methodInfo = typeof(MethodInfo).GetMethod("Invoke", types);
method = new DynamicMethod("InvokeMethod", typeof(object), parameterTypes);
method.DefineParameter(1, ParameterAttributes.In, "method");
method.DefineParameter(2, ParameterAttributes.In, "instance");
method.DefineParameter(3, ParameterAttributes.In, "args");
iLGenerator = method.GetILGenerator(5);
iLGenerator.Emit(OpCodes.Ldarg_0);
iLGenerator.Emit(OpCodes.Ldarg_1);
iLGenerator.Emit(OpCodes.Ldarg_2);
iLGenerator.EmitCall(OpCodes.Callvirt, methodInfo, null);
iLGenerator.Emit(OpCodes.Ret);
s_InvokeMethod = (InvokeMethodDelegate) method.CreateDelegate(typeof(InvokeMethodDelegate));
}
private static void CreateDynamicAssembly()
{
// 1. Assert permissions demanded by the DynamicMethod ctor.
new SecurityPermission(SecurityPermissionFlag.ControlEvidence).Assert(); // BlessedAssert
// 2. Create the transparent methods, each wrapping a call to a reflection method,
// and cache a delegate to each method.
Type[] parameterTypes; // signature of the reflection method
Type[] wrappedParameterTypes; // signature of the wrapping method (when different)
MethodInfo mi; // descriptor for the reflection method
DynamicMethod method; // wrapping method
ILGenerator il; // wrapping method's generator
// 2a. Delegate.CreateDelegate( Type, Type, String )
parameterTypes = new Type[] { typeof(Type), typeof(Type), typeof(String) };
mi = typeof(Delegate).GetMethod("CreateDelegate", parameterTypes);
method = new DynamicMethod("CreateDelegate", typeof(Delegate), parameterTypes);
method.DefineParameter(1, ParameterAttributes.In, "delegateType");
method.DefineParameter(2, ParameterAttributes.In, "targetType");
method.DefineParameter(3, ParameterAttributes.In, "methodName");
il = method.GetILGenerator(5);
il.Emit(OpCodes.Ldarg_0); // push delegateType
il.Emit(OpCodes.Ldarg_1); // push targetType
il.Emit(OpCodes.Ldarg_2); // push methodName
il.EmitCall(OpCodes.Call, mi, null); // call Delegate.CreateDelegate
il.Emit(OpCodes.Ret); // return the result
s_CreateDelegate1 = (CreateDelegate1Delegate)method.CreateDelegate(typeof(CreateDelegate1Delegate));
// 2b. Delegate.CreateDelegate( Type, Object, String )
parameterTypes = new Type[] { typeof(Type), typeof(Object), typeof(String) };
mi = typeof(Delegate).GetMethod("CreateDelegate", parameterTypes);
method = new DynamicMethod("CreateDelegate", typeof(Delegate), parameterTypes);
method.DefineParameter(1, ParameterAttributes.In, "delegateType");
method.DefineParameter(2, ParameterAttributes.In, "target");
method.DefineParameter(3, ParameterAttributes.In, "methodName");
il = method.GetILGenerator(5);
il.Emit(OpCodes.Ldarg_0); // push delegateType
il.Emit(OpCodes.Ldarg_1); // push target
il.Emit(OpCodes.Ldarg_2); // push methodName
il.EmitCall(OpCodes.Call, mi, null); // call Delegate.CreateDelegate
il.Emit(OpCodes.Ret); // return the result
s_CreateDelegate2 = (CreateDelegate2Delegate)method.CreateDelegate(typeof(CreateDelegate2Delegate));
// 2c. Activator.CreateInstance( Type, Object[] )
parameterTypes = new Type[] { typeof(Type), typeof(Object[]) };
mi = typeof(Activator).GetMethod("CreateInstance", parameterTypes);
method = new DynamicMethod("CreateInstance", typeof(Object), parameterTypes);
method.DefineParameter(1, ParameterAttributes.In, "type");
method.DefineParameter(2, ParameterAttributes.In, "arguments");
il = method.GetILGenerator(4);
il.Emit(OpCodes.Ldarg_0); // push type
il.Emit(OpCodes.Ldarg_1); // push arguments
il.EmitCall(OpCodes.Call, mi, null); // call Activator.CreateInstance
il.Emit(OpCodes.Ret); // return the result
s_CreateInstance = (CreateInstanceDelegate)method.CreateDelegate(typeof(CreateInstanceDelegate));
// 2d. MethodInfo.Invoke(object, args)
parameterTypes = new Type[] { typeof(Object), typeof(Object[]) };
wrappedParameterTypes = new Type[] { typeof(MethodInfo), typeof(Object), typeof(Object[]) };
mi = typeof(MethodInfo).GetMethod("Invoke", parameterTypes);
method = new DynamicMethod("InvokeMethod", typeof(Object), wrappedParameterTypes);
method.DefineParameter(1, ParameterAttributes.In, "method");
method.DefineParameter(2, ParameterAttributes.In, "instance");
method.DefineParameter(3, ParameterAttributes.In, "args");
il = method.GetILGenerator(5);
il.Emit(OpCodes.Ldarg_0); // push method
il.Emit(OpCodes.Ldarg_1); // push instance
il.Emit(OpCodes.Ldarg_2); // push args
il.EmitCall(OpCodes.Callvirt, mi, null); // call method.Invoke
il.Emit(OpCodes.Ret); // return the result
s_InvokeMethod = (InvokeMethodDelegate)method.CreateDelegate(typeof(InvokeMethodDelegate));
}
