static T CreateFakeBusObject <T>(FakeTransport transport)
{
var typeImplementer = new TypeImplementer("test", false);
var t = typeImplementer.GetImplementation(typeof(TestObj));
T instObj = (T)Activator.CreateInstance(t);
BusObject inst = BusObject.GetBusObject(instObj);
inst.conn = new Connection(transport);
inst.bus_name = "something";
inst.object_path = new ObjectPath("DontCare");
return((T)instObj);
}
public void ParameterProviderAddsMappingForSubClassWhenBaseClassIsMapped()
{
var tpp = new TraceParameterProvider();
tpp.ForAnything()
.With <BaseClass>()
.Trace(c => c.Message);
var proxy2 = new TypeImplementer(typeof(ISubClassEventSource), tpp).EventSource;
Assert.DoesNotThrow(delegate
{
var proxy = new TypeImplementer(typeof(ISubClassEventSource), tpp).EventSource;
});
}
//this requires a seekable stream for now
public void WriteArray <T> (T[] val)
{
Type elemType = typeof(T);
if (elemType == typeof(byte))
{
if (val.Length > ProtocolInformation.MaxArrayLength)
{
ThrowArrayLengthException((uint)val.Length);
}
Write((uint)val.Length);
stream.Write((byte[])(object)val, 0, val.Length);
return;
}
if (elemType.IsEnum)
{
elemType = Enum.GetUnderlyingType(elemType);
}
Signature sigElem = Signature.GetSig(elemType);
int fixedSize = 0;
if (endianness == Connection.NativeEndianness && elemType.IsValueType && !sigElem.IsStruct && elemType != typeof(bool) && sigElem.GetFixedSize(ref fixedSize))
{
int byteLength = fixedSize * val.Length;
if (byteLength > ProtocolInformation.MaxArrayLength)
{
ThrowArrayLengthException((uint)byteLength);
}
Write((uint)byteLength);
WritePad(sigElem.Alignment);
byte[] data = new byte[byteLength];
Buffer.BlockCopy(val, 0, data, 0, data.Length);
stream.Write(data, 0, data.Length);
return;
}
long origPos = stream.Position;
Write((uint)0);
//advance to the alignment of the element
WritePad(sigElem.Alignment);
long startPos = stream.Position;
TypeWriter <T> tWriter = TypeImplementer.GetTypeWriter <T> ();
foreach (T elem in val)
{
tWriter(this, elem);
}
long endPos = stream.Position;
uint ln = (uint)(endPos - startPos);
stream.Position = origPos;
if (ln > ProtocolInformation.MaxArrayLength)
{
ThrowArrayLengthException(ln);
}
Write(ln);
stream.Position = endPos;
}
/// <summary>
/// Emits the implementation of a given interface method.
/// </summary>
/// <param name="executeMethod">The execute method to implement.</param>
private void EmitMethodImpl(MethodInfo executeMethod, List <Tuple <FieldInfo, object> > valuesToSet)
{
/*
* public TReturn Method (params)
* {
* var scope = new EventActivityScope(true);
* try
* {
* _log.Method(params);
* object value = _execute.Method(params);
* _log.Method_Completed(value);
* }
* catch (Exception e)
* {
* _log.Method_Faulted(e);
* throw;
* }
* finally
* {
* scope.Dispose();
* }
* }
*/
var invocationContext = new InvocationContext(executeMethod, InvocationContextTypes.MethodCall);
// start building the interface
MethodBuilder m = _typeBuilder.DefineMethod(executeMethod.Name, MethodAttributes.Public | MethodAttributes.Virtual);
ProxyHelper.CopyMethodSignature(executeMethod, m);
var parameterTypes = executeMethod.GetParameters().Select(p => p.ParameterType).ToArray();
ILGenerator mIL = m.GetILGenerator();
// set up a place to hold the return value
LocalBuilder returnValue = null;
if (m.ReturnType != typeof(void))
{
returnValue = mIL.DeclareLocal(m.ReturnType);
}
// set up the activity scope
LocalBuilder scope = null;
if (_callWithActivityScope)
{
scope = mIL.DeclareLocal(typeof(EventActivityScope));
mIL.Emit(OpCodes.Ldc_I4_1);
mIL.Emit(OpCodes.Newobj, typeof(EventActivityScope).GetConstructor(new Type[] { typeof(bool) }));
mIL.Emit(OpCodes.Stloc, scope);
}
// start the try block
mIL.BeginExceptionBlock();
// call the method on the log that matches the execute method
var targetParameterTypes = parameterTypes.Select(p => p.IsGenericParameter ? TypeImplementer.GetTypeSupportedByEventSource(p) : p).ToArray();
var logMethod = DiscoverMethod(_logField.FieldType, executeMethod.Name, String.Empty, targetParameterTypes);
if (logMethod != null)
{
// call the log method and throw away the result if there is one
EmitBaseMethodCall(m, invocationContext, _logField, executeMethod, logMethod, valuesToSet);
if (logMethod.ReturnType != typeof(void))
{
mIL.Emit(OpCodes.Pop);
}
}
// call execute
EmitBaseMethodCall(m, invocationContext, _executeField, executeMethod, executeMethod, valuesToSet);
if (executeMethod.ReturnType != typeof(void))
{
mIL.Emit(OpCodes.Stloc, returnValue);
}
// if there is a completed method, then call that
var completedParameterTypes = (executeMethod.ReturnType == typeof(void)) ? Type.EmptyTypes : new Type[] { executeMethod.ReturnType };
var completedMethod = DiscoverMethod(_logField.FieldType, executeMethod.Name, TypeImplementer.CompletedSuffix, completedParameterTypes);
if (completedMethod != null)
{
// load this._log
mIL.Emit(OpCodes.Ldarg_0);
mIL.Emit(OpCodes.Ldfld, _logField);
// load the value from the local variable
if (executeMethod.ReturnType != typeof(void))
{
mIL.Emit(OpCodes.Ldloc, returnValue);
}
mIL.Emit(OpCodes.Call, completedMethod);
if (completedMethod.ReturnType != typeof(void))
{
mIL.Emit(OpCodes.Pop);
}
}
// handle exceptions by logging them and rethrowing
mIL.BeginCatchBlock(typeof(Exception));
var faultedMethod = DiscoverMethod(_logField.FieldType, executeMethod.Name, TypeImplementer.FaultedSuffix, new Type[] { typeof(Exception) });
if (faultedMethod != null)
{
// save the exception
var exception = mIL.DeclareLocal(typeof(Exception));
mIL.Emit(OpCodes.Stloc, exception);
// load this._log
mIL.Emit(OpCodes.Ldarg_0);
mIL.Emit(OpCodes.Ldfld, _logField);
// load the exception
mIL.Emit(OpCodes.Ldloc, exception);
// call the fault handler
mIL.Emit(OpCodes.Call, faultedMethod);
if (faultedMethod.ReturnType != typeof(void))
{
mIL.Emit(OpCodes.Pop);
}
}
mIL.Emit(OpCodes.Rethrow);
// clean up the activity scope
if (_callWithActivityScope)
{
mIL.BeginFinallyBlock();
mIL.Emit(OpCodes.Ldloc, scope);
mIL.Emit(OpCodes.Callvirt, typeof(EventActivityScope).GetMethod("Dispose"));
}
mIL.EndExceptionBlock();
// return the result
if (executeMethod.ReturnType != typeof(void))
{
mIL.Emit(OpCodes.Ldloc, returnValue);
}
mIL.Emit(OpCodes.Ret);
}
public void ParameterProviderAddsMappingForSubClassWhenBaseClassIsMapped()
{
var tpp = new TraceParameterProvider();
tpp.ForAnything()
.With<BaseClass>()
.Trace(c => c.Message);
var proxy2 = new TypeImplementer(typeof(ISubClassEventSource), tpp).EventSource;
Assert.DoesNotThrow(delegate
{
var proxy = new TypeImplementer(typeof(ISubClassEventSource), tpp).EventSource;
});
}
