public void AssertValidMethod(MethodInfo method)
{
if (method.ReturnType != preBuildContextType
|| method.GetParameterTypes().SingleOrDefaultIfMore() != preBuildContextType)
{
throw new InvalidMethodSignature(GetType(), method, preBuildContextType);
}
}
internal static void GenerateMethodForDelegateCall(this TypeBuilder dynamicType, MethodInfo method, FieldBuilder field, MethodInfo onUnhandledException)
{
var il = dynamicType.CreateMethod(method);
// the target object has a property or field that matches the signature we're looking for.
// let's use that.
var delegateType = WrappedDelegate.GetFuncOrActionType(method.GetParameterTypes(), method.ReturnType);
il.LoadThis();
il.LoadField(field);
for (var i = 0; i < method.GetParameterTypes().Length; i++) {
il.LoadArgument(i + 1);
}
il.CallVirutal(delegateType.GetMethod("Invoke"));
il.Return();
}
internal static bool IsDelegateAssignableFromMethod(this Type delegateType, MethodInfo methodInfo) {
if (delegateType == null || methodInfo == null) {
return false;
}
// are the return types the same?
if (methodInfo.ReturnType != delegateType.GetDelegateReturnType() && !methodInfo.ReturnType.IsAssignableFrom(delegateType.GetDelegateReturnType())) {
return false;
}
if (!delegateType.GetDelegateParameterTypes().SequenceEqual(methodInfo.GetParameterTypes(), AssignableTypeComparer.Instance)) {
return false;
}
return true;
}
[System.Security.SecuritySafeCritical] // auto-generated
public virtual void EmitCall(OpCode opcode, MethodInfo methodInfo, Type[] optionalParameterTypes)
{
if (methodInfo == null)
throw new ArgumentNullException("methodInfo");
if (!(opcode.Equals(OpCodes.Call) || opcode.Equals(OpCodes.Callvirt) || opcode.Equals(OpCodes.Newobj)))
throw new ArgumentException(Environment.GetResourceString("Argument_NotMethodCallOpcode"), "opcode");
Contract.EndContractBlock();
int stackchange = 0;
int tk = GetMethodToken(methodInfo, optionalParameterTypes, false);
EnsureCapacity(7);
InternalEmit(opcode);
// Push the return value if there is one.
if (methodInfo.ReturnType != typeof(void))
stackchange++;
// Pop the parameters.
Type[] parameters = methodInfo.GetParameterTypes();
if (parameters != null)
stackchange -= parameters.Length;
// Pop the this parameter if the method is non-static and the
// instruction is not newobj.
if (!(methodInfo is SymbolMethod) && methodInfo.IsStatic == false && !(opcode.Equals(OpCodes.Newobj)))
stackchange--;
// Pop the optional parameters off the stack.
if (optionalParameterTypes != null)
stackchange -= optionalParameterTypes.Length;
UpdateStackSize(opcode, stackchange);
RecordTokenFixup();
PutInteger4(tk);
}
internal static void GenerateMethodForDirectCall(this TypeBuilder dynamicType, MethodInfo method, FieldBuilder backingField, MethodInfo instanceMethod, MethodInfo onUnhandledException)
{
var il = dynamicType.CreateMethod(method);
// the target object has a method that matches.
// let's use that.
var hasReturn = method.ReturnType != typeof(void);
var hasOue = onUnhandledException != null;
var exit = il.DefineLabel();
var setDefaultReturn = il.DefineLabel();
var ret = hasReturn ? il.DeclareLocal(method.ReturnType) : null;
var exc = hasOue ? il.DeclareLocal(typeof(Exception)) : null;
il.BeginExceptionBlock();
il.LoadThis();
il.LoadField(backingField);
var imTypes = instanceMethod.GetParameterTypes();
var dmTypes = method.GetParameterTypes();
for (var i = 0; i < dmTypes.Length; i++)
{
il.LoadArgument(i + 1);
// if the types are assignable,
if (imTypes[i].IsAssignableFrom(dmTypes[i]))
{
// it assigns straight across.
}
else
{
// it doesn't, we'll ducktype it.
if (dmTypes[i].GetTypeInfo().IsPrimitive)
{
// box it first?
il.Emit(OpCodes.Box, dmTypes[i]);
}
il.Call(AsMethod.MakeGenericMethod(imTypes[i]));
}
}
// call the actual method implementation
il.CallVirtual(instanceMethod);
if (hasReturn)
{
// copy the return value in the return
// check to see if we need to ducktype the return value here.
if (method.ReturnType.IsAssignableFrom(instanceMethod.ReturnType))
{
// it can store it directly.
}
else
{
// it doesn't assign directly, let's ducktype it.
if (instanceMethod.ReturnType.GetTypeInfo().IsPrimitive)
{
il.Emit(OpCodes.Box, instanceMethod.ReturnType);
}
il.Call(AsMethod.MakeGenericMethod(method.ReturnType));
}
il.StoreLocation(ret);
}
else
{
// this method isn't returning anything.
if (instanceMethod.ReturnType != typeof(void))
{
// pop the return value because the generated method is void and the
// method we called actually gave us a result.
il.Emit(OpCodes.Pop);
}
}
il.Emit(OpCodes.Leave_S, exit);
il.BeginCatchBlock(typeof(Exception));
if (hasOue)
{
// we're going to call the handler.
il.StoreLocation(exc.LocalIndex);
il.LoadArgument(0);
il.Emit(OpCodes.Ldstr, instanceMethod.ToSignatureString());
il.LoadLocation(exc.LocalIndex);
il.Call(onUnhandledException);
il.Emit(OpCodes.Leave_S, setDefaultReturn);
}
else
{
// suppress the exception quietly
il.Emit(OpCodes.Pop);
il.Emit(OpCodes.Leave_S, setDefaultReturn);
}
il.EndExceptionBlock();
// if we can't return the appropriate value, we're returning default(T)
il.MarkLabel(setDefaultReturn);
SetDefaultReturnValue(il, method.ReturnType);
il.Return();
// looks like we're returning the value that we got back from the implementation.
il.MarkLabel(exit);
if (hasReturn)
{
il.LoadLocation(ret.LocalIndex);
}
il.Return();
}
internal static ILGenerator CreateMethod(this TypeBuilder dynamicType, MethodInfo method)
{
return dynamicType.CreateMethod(method.Name, method.ReturnType, method.GetParameterTypes());
}
[System.Security.SecuritySafeCritical] // auto-generated
public override void EmitCall(OpCode opcode, MethodInfo methodInfo, Type[] optionalParameterTypes)
{
if (methodInfo == null)
throw new ArgumentNullException(nameof(methodInfo));
if (!(opcode.Equals(OpCodes.Call) || opcode.Equals(OpCodes.Callvirt) || opcode.Equals(OpCodes.Newobj)))
throw new ArgumentException(Environment.GetResourceString("Argument_NotMethodCallOpcode"), nameof(opcode));
if (methodInfo.ContainsGenericParameters)
throw new ArgumentException(Environment.GetResourceString("Argument_GenericsInvalid"), nameof(methodInfo));
if (methodInfo.DeclaringType != null && methodInfo.DeclaringType.ContainsGenericParameters)
throw new ArgumentException(Environment.GetResourceString("Argument_GenericsInvalid"), nameof(methodInfo));
Contract.EndContractBlock();
int tk;
int stackchange = 0;
tk = GetMemberRefToken(methodInfo, optionalParameterTypes);
EnsureCapacity(7);
InternalEmit(opcode);
// Push the return value if there is one.
if (methodInfo.ReturnType != typeof(void))
stackchange++;
// Pop the parameters.
stackchange -= methodInfo.GetParameterTypes().Length;
// Pop the this parameter if the method is non-static and the
// instruction is not newobj.
if (!(methodInfo is SymbolMethod) && methodInfo.IsStatic == false && !(opcode.Equals(OpCodes.Newobj)))
stackchange--;
// Pop the optional parameters off the stack.
if (optionalParameterTypes != null)
stackchange -= optionalParameterTypes.Length;
UpdateStackSize(opcode, stackchange);
PutInteger4(tk);
}
static bool MethodMatch (MethodInfo candidate, MethodInfo method)
{
if (candidate.Name != method.Name)
return false;
if (!HasExtensionAttribute (candidate))
return false;
var parameters = method.GetParameterTypes ();
if (parameters.Length != candidate.GetParameters ().Length)
return false;
if (method.IsGenericMethod) {
if (!candidate.IsGenericMethod)
return false;
if (candidate.GetGenericArguments ().Length != method.GetGenericArguments ().Length)
return false;
candidate = candidate.MakeGenericMethodFrom (method);
}
if (!TypeMatch (candidate.ReturnType, method.ReturnType))
return false;
var candidate_parameters = candidate.GetParameterTypes ();
if (candidate_parameters [0] != GetComparableType (parameters [0]))
return false;
for (int i = 1; i < candidate_parameters.Length; ++i)
if (!TypeMatch (candidate_parameters [i], parameters [i]))
return false;
return true;
}
public virtual void EmitCall(OpCode opcode, MethodInfo methodInfo, Type[] optionalParameterTypes)
{
if (methodInfo == null)
{
throw new ArgumentNullException("methodInfo");
}
if ((!opcode.Equals(OpCodes.Call) && !opcode.Equals(OpCodes.Callvirt)) && !opcode.Equals(OpCodes.Newobj))
{
throw new ArgumentException(Environment.GetResourceString("Argument_NotMethodCallOpcode"), "opcode");
}
int stackchange = 0;
int num2 = this.GetMethodToken(methodInfo, optionalParameterTypes, false);
this.EnsureCapacity(7);
this.InternalEmit(opcode);
if (methodInfo.ReturnType != typeof(void))
{
stackchange++;
}
Type[] parameterTypes = methodInfo.GetParameterTypes();
if (parameterTypes != null)
{
stackchange -= parameterTypes.Length;
}
if ((!(methodInfo is SymbolMethod) && !methodInfo.IsStatic) && !opcode.Equals(OpCodes.Newobj))
{
stackchange--;
}
if (optionalParameterTypes != null)
{
stackchange -= optionalParameterTypes.Length;
}
this.UpdateStackSize(opcode, stackchange);
this.RecordTokenFixup();
this.PutInteger4(num2);
}
public override void EmitCall(OpCode opcode, MethodInfo methodInfo, Type[] optionalParameterTypes) {
int tk;
int stackchange = 0;
if (methodInfo == null)
throw new ArgumentNullException("methodInfo");
if (methodInfo.ContainsGenericParameters)
throw new ArgumentException(Environment.GetResourceString("Argument_GenericsInvalid"), "methodInfo");
if (methodInfo.DeclaringType != null && methodInfo.DeclaringType.ContainsGenericParameters)
throw new ArgumentException(Environment.GetResourceString("Argument_GenericsInvalid"), "methodInfo");
tk = GetMemberRefToken(methodInfo, optionalParameterTypes);
EnsureCapacity(7);
InternalEmit(opcode);
// The opcode must be one of call, callvirt, or newobj.
BCLDebug.Assert(opcode.Equals(OpCodes.Call) ||
opcode.Equals(OpCodes.Callvirt) ||
opcode.Equals(OpCodes.Newobj),
"Unexpected opcode passed to EmitCall.");
// Push the return value if there is one.
if (methodInfo.ReturnType != typeof(void))
stackchange++;
// Pop the parameters.
stackchange -= methodInfo.GetParameterTypes().Length;
// Pop the this parameter if the method is non-static and the
// instruction is not newobj.
if (!(methodInfo is SymbolMethod) && methodInfo.IsStatic == false && !(opcode.Equals(OpCodes.Newobj)))
stackchange--;
// Pop the optional parameters off the stack.
if (optionalParameterTypes != null)
stackchange -= optionalParameterTypes.Length;
UpdateStackSize(opcode, stackchange);
m_length = PutInteger4(tk, m_length, m_ILStream);
}
private static Setter CreateSetter(MethodInfo method)
{
var dm = CreateDynamicSetterMethod();
Type returnType = method.GetParameterTypes()[0];
ILGenerator il = dm.GetILGenerator();
il.DeclareLocal(returnType);
il.Emit(OpCodes.Ldarg_1);
EmitHelper.UnboxOrCast(il, returnType);
il.Emit(OpCodes.Stloc_0);
il.Emit(OpCodes.Ldarg_0);
EmitHelper.UnboxOrCast(il, method.DeclaringType);
il.Emit(OpCodes.Ldloc_0);
if (method.IsFinal)
il.Emit(OpCodes.Call, method);
else
il.Emit(OpCodes.Callvirt, method);
il.Emit(OpCodes.Ret);
return dm.CreateDelegate(typeof(Setter)) as Setter;
}
private static MethodBuilder DefineExplicitInterfaceMethod(this TypeBuilder typeBuilder, MethodInfo method)
{
var builder = typeBuilder.DefineMethod($"{method.DeclaringType.FullName}.{method.Name}",
MethodAttributes.Private | MethodAttributes.Final | MethodAttributes.HideBySig | MethodAttributes.NewSlot | MethodAttributes.Virtual,
method.CallingConvention, method.ReturnType, method.GetParameterTypes().ToArray());
if (method.IsGenericMethod)
{
builder.DefineGeneric(method);
}
typeBuilder.DefineMethodOverride(builder, method);
return builder;
}
private static MethodBuilder DefineOverrideMethod(this TypeBuilder typeBuilder, MethodInfo method)
{
var builder = typeBuilder.DefineMethod(method.Name, method.GetAttributes(), method.CallingConvention, method.ReturnType, method.GetParameterTypes().ToArray());
if (method.IsGenericMethod)
{
return builder.DefineGeneric(method);
}
return builder;
}
private static void MethodIntercept(ILGenerator ilGenerator, MethodInfo methodInfo, IInterceptor[] interceptors, LocalBuilder[] local,
bool[] boolean, Action<ILGenerator> method)
{
var methodInterceptors = interceptors.GetMethodInterceptor();
if (!methodInterceptors.Any())
{
method(ilGenerator);
return;
}
var invocationType = InternalDynamicTypeProvider.CreateType<IMethodInvocation>();
var returnParameterType = InternalDynamicTypeProvider.CreateType<IReturnParameter>();
var parameterType = InternalDynamicTypeProvider.CreateType<IParameter>();
var setParameters = invocationType.GetMethod("set_Parameters");
var setParameterValue = parameterType.GetMethod("set_Value");
var getParameterValue = parameterType.GetMethod("get_Value");
var setParameterName = parameterType.GetMethod("set_Name");
var setParameterInfo = parameterType.GetMethod("set_ParameterInfo");
var getParameterName = typeof(ParameterInfo).GetMethod("get_Name");
var getCurrentParameter = typeof(InterceptorExtends).GetMethod("GetCurrentParameter");
var setReturnParameter = invocationType.GetMethod("set_ReturnParameter");
var getReturnValue = returnParameterType.GetMethod("get_Value");
var setReturnType = returnParameterType.GetMethod("set_ReturnType");
var setReturnValue = returnParameterType.GetMethod("set_Value");
var returnParameterLocal = ilGenerator.DeclareLocal(returnParameterType);
var getReturnType = typeof(MethodInfo).GetMethod("get_ReturnType");
var setInterceptedMethod = invocationType.GetMethod("set_InterceptedMethod");
var setInterceptedType = invocationType.GetMethod("set_InterceptedType");
var setInterceptedInstance = invocationType.GetMethod("set_InterceptedInstance");
var getExecutedHandled = invocationType.GetMethod("get_ExecutedHandled");
var getGetMethodInterceptor = typeof(InterceptorExtends).GetMethod("GetMethodInterceptor");
var getGetExecutedMethodInterceptor = typeof(InterceptorExtends).GetMethod("GetExecutedMethodInterceptor");
var onMethodExecuting = typeof(IMethodInterceptor).GetMethod("OnMethodExecuting");
var onMethodExecuted = typeof(IMethodInterceptor).GetMethod("OnMethodExecuted");
var interceptorLocal = ilGenerator.DeclareLocal(typeof(IMethodInterceptor[]));
var executedInterceptorLocal = ilGenerator.DeclareLocal(typeof(IMethodInterceptor[]));
var parametersLocal = ilGenerator.DeclareLocal(typeof(IParameter[]));
var invocationLocal = ilGenerator.DeclareLocal(invocationType);
var endLable = ilGenerator.DefineLabel();
ilGenerator.LoadLocal(local[0]).Call(getGetMethodInterceptor).StoreLocal(interceptorLocal);
ilGenerator.LoadLocal(local[0]).Call(getGetExecutedMethodInterceptor).StoreLocal(executedInterceptorLocal);
ilGenerator.New(invocationType.GetConstructor(Type.EmptyTypes)).StoreLocal(invocationLocal);
ilGenerator.LoadLocal(invocationLocal).LoadLocal(local[1]).Callvirt(setInterceptedMethod);
ilGenerator.LoadLocal(invocationLocal).LoadLocal(local[2]).Callvirt(setInterceptedType);
ilGenerator.LoadLocal(invocationLocal).This().Callvirt(setInterceptedInstance);
ilGenerator.New(returnParameterType.GetConstructor(Type.EmptyTypes)).StoreLocal(returnParameterLocal);
if (boolean[0]) ilGenerator.LoadLocal(returnParameterLocal).LoadLocal(local[1]).Callvirt(getReturnType).Callvirt(setReturnType);
else ilGenerator.LoadLocal(returnParameterLocal).Typeof(typeof(void)).Callvirt(setReturnType);
ilGenerator.LoadLocal(invocationLocal).LoadLocal(returnParameterLocal).Callvirt(setReturnParameter);
ilGenerator.NewArray(typeof(IParameter), methodInfo.GetParameters().Length).StoreLocal(parametersLocal);
ilGenerator.ForEach(methodInfo.GetParameterTypes(), (il, arg, i) =>
{
var argLocal = ilGenerator.DeclareLocal(parameterType);
ilGenerator.New(parameterType.GetConstructor(Type.EmptyTypes)).StoreLocal(argLocal);
ilGenerator.LoadLocal(argLocal).LoadArgument(i + 1).Box(arg).Callvirt(setParameterValue);
ilGenerator.LoadLocal(argLocal).LoadLocal(local[1]).LoadInt(i).Call(getCurrentParameter).Callvirt(setParameterInfo);
ilGenerator.LoadLocal(argLocal).LoadLocal(local[1]).LoadInt(i).Call(getCurrentParameter).Callvirt(getParameterName).Callvirt(setParameterName);
ilGenerator.LoadLocal(parametersLocal).LoadInt(i).LoadLocal(argLocal).SetArrayItemRef();
});
ilGenerator.LoadLocal(invocationLocal).LoadLocal(parametersLocal).Callvirt(setParameters);
ilGenerator.ForEach(methodInterceptors, (_, interceptor, index) =>
_.LoadLocal(interceptorLocal).LoadArrayItem(index).LoadLocal(invocationLocal)
.Callvirt(onMethodExecuting).LoadLocal(invocationLocal).Callvirt(getExecutedHandled).False(endLable));
ilGenerator.ForEach(methodInfo.GetParameterTypes(), (il, arg, i) =>
{
ilGenerator.LoadLocal(parametersLocal).LoadArrayItem(i).Callvirt(getParameterValue).UnBox(arg).StroeArgument(i + 1);
});
method(ilGenerator);
if (boolean[0]) ilGenerator.LoadLocal(returnParameterLocal).LoadLocal(local[3]).Callvirt(setReturnValue);
ilGenerator.ForEach(methodInterceptors.OrderBy(i => i.ExecutedOrder), (_, interceptor, index) =>
_.LoadLocal(executedInterceptorLocal).LoadArrayItem(index).LoadLocal(invocationLocal).
Callvirt(onMethodExecuted).LoadLocal(invocationLocal).Callvirt(getExecutedHandled).False(endLable));
ilGenerator.MarkLabelFor(endLable);
if (boolean[0]) ilGenerator.LoadLocal(returnParameterLocal).Callvirt(getReturnValue).StoreLocal(local[3]);
}
private static bool MethodMatch(MethodInfo candidate, MethodInfo method)
{
if (candidate.Name != method.Name || !HasExtensionAttribute(candidate))
{
return false;
}
var parameters = method.GetParameterTypes();
if (parameters.Length != candidate.GetParameters().Length)
{
return false;
}
else if (method.IsGenericMethod)
{
if (!candidate.IsGenericMethod || candidate.GetGenericArguments().Length != method.GetGenericArguments().Length)
{
return false;
}
candidate = candidate.MakeGenericMethodFrom(method);
}
if (!TypeMatch(candidate.ReturnType, method.ReturnType))
{
return false;
}
var candidate_parameters = candidate.GetParameterTypes();
if (candidate_parameters[0] != GetComparableType(parameters[0]))
{
return false;
}
for (int index = 1; index < candidate_parameters.Length; ++index)
{
if (!TypeMatch(candidate_parameters[index], parameters[index]))
{
return false;
}
}
return true;
}
public override void EmitCall(OpCode opcode, MethodInfo methodInfo, Type[] optionalParameterTypes)
{
if (methodInfo == null)
{
throw new ArgumentNullException("methodInfo");
}
if ((!opcode.Equals(OpCodes.Call) && !opcode.Equals(OpCodes.Callvirt)) && !opcode.Equals(OpCodes.Newobj))
{
throw new ArgumentException(Environment.GetResourceString("Argument_NotMethodCallOpcode"), "opcode");
}
if (methodInfo.ContainsGenericParameters)
{
throw new ArgumentException(Environment.GetResourceString("Argument_GenericsInvalid"), "methodInfo");
}
if ((methodInfo.DeclaringType != null) && methodInfo.DeclaringType.ContainsGenericParameters)
{
throw new ArgumentException(Environment.GetResourceString("Argument_GenericsInvalid"), "methodInfo");
}
int stackchange = 0;
int memberRefToken = this.GetMemberRefToken(methodInfo, optionalParameterTypes);
base.EnsureCapacity(7);
base.InternalEmit(opcode);
if (methodInfo.ReturnType != typeof(void))
{
stackchange++;
}
stackchange -= methodInfo.GetParameterTypes().Length;
if ((!(methodInfo is SymbolMethod) && !methodInfo.IsStatic) && !opcode.Equals(OpCodes.Newobj))
{
stackchange--;
}
if (optionalParameterTypes != null)
{
stackchange -= optionalParameterTypes.Length;
}
base.UpdateStackSize(opcode, stackchange);
base.PutInteger4(memberRefToken);
}
