public void SetMethodInfo(MMethod methodInfo)
{
this.methodInfo = methodInfo;
methodReturnType = ResolverUtils.GetReturnType(methodInfo.methodBase);
methodParameters = GetMethodParameterTypes(methodInfo.methodBase);
delegateType = Utils.GetDelegateType(methodReturnType, methodParameters);
}
public RewrittenMethod CreateDelegate(MethodBase realMethod)
{
var newMethodInfo = realMethodToNewMethod[realMethod];
if (newMethodInfo.rewrittenMethod != null)
{
return(newMethodInfo.rewrittenMethod);
}
var dm = new DynamicMethod(newMethodInfo.rewrittenMethodName, typeof(object), new Type[] { GetType(), typeof(object[]) }, newMethodInfo.oldMethod.Module, true);
var ilg = dm.GetILGenerator();
ilg.Emit(ROpCodes.Ldarg_0);
ilg.Emit(ROpCodes.Ldc_I4, newMethodInfo.delegateIndex);
ilg.Emit(ROpCodes.Call, GetType().GetMethod("RtGetDelegateInstance", BindingFlags.DeclaredOnly | BindingFlags.NonPublic | BindingFlags.Instance));
ilg.Emit(ROpCodes.Castclass, newMethodInfo.delegateType);
var args = newMethodInfo.oldMethod.GetParameters();
for (int i = 0; i < args.Length; i++)
{
var arg = args[i].ParameterType;
ilg.Emit(ROpCodes.Ldarg_1);
ilg.Emit(ROpCodes.Ldc_I4, i);
ilg.Emit(ROpCodes.Ldelem_Ref);
if (arg.IsValueType)
{
ilg.Emit(ROpCodes.Unbox_Any, arg);
}
else
{
ilg.Emit(ROpCodes.Castclass, arg);
}
}
ilg.Emit(ROpCodes.Ldarg_0);
var flags = BindingFlags.DeclaredOnly | BindingFlags.Public | BindingFlags.Instance;
var invokeMethod = newMethodInfo.delegateType.GetMethod("Invoke", flags);
ilg.Emit(ROpCodes.Call, invokeMethod);
if (ResolverUtils.GetReturnType(newMethodInfo.oldMethod) == typeof(void))
{
ilg.Emit(ROpCodes.Ldnull);
}
ilg.Emit(ROpCodes.Ret);
newMethodInfo.rewrittenMethod = (RewrittenMethod)dm.CreateDelegate(typeof(RewrittenMethod), this);
return(newMethodInfo.rewrittenMethod);
}
