public Expression[] GetConstructorInvocationArguments(Expression[] arguments, ClassEmitter proxy)
{
var allArguments = new Expression[arguments.Length + 1];
allArguments[0] = new ReferenceExpression(BuildDelegateToken(proxy));
Array.Copy(arguments, 0, allArguments, 1, arguments.Length);
return allArguments;
}
private Reference GetDelegate(AbstractTypeEmitter invocation, MethodEmitter invokeMethodOnTarget)
{
var closedDelegateType = delegateType.MakeGenericType(invocation.GenericTypeParams);
var localReference = invokeMethodOnTarget.CodeBuilder.DeclareLocal(closedDelegateType);
var closedMethodOnTarget = method.MethodOnTarget.MakeGenericMethod(invocation.GenericTypeParams);
var localTarget = new ReferenceExpression(targetReference);
invokeMethodOnTarget.CodeBuilder.AddStatement(
SetDelegate(localReference, localTarget, closedDelegateType, closedMethodOnTarget));
return localReference;
}
public static ReferenceExpression[] ConvertToArgumentReferenceExpression(ParameterInfo[] args)
{
var arguments = new ReferenceExpression[args.Length];
for (var i = 0; i < args.Length; ++i)
{
arguments[i] = new ReferenceExpression(new ArgumentReference(args[i].ParameterType, i + 1));
}
return arguments;
}
private AssignStatement SetDelegate(LocalReference localDelegate, ReferenceExpression localTarget,
Type closedDelegateType, MethodInfo closedMethodOnTarget)
{
var delegateCreateDelegate = new MethodInvocationExpression(
null,
DelegateMethods.CreateDelegate,
new TypeTokenExpression(closedDelegateType),
localTarget,
new MethodTokenExpression(closedMethodOnTarget));
return new AssignStatement(localDelegate, new ConvertExpression(closedDelegateType, delegateCreateDelegate));
}
public void DoWork(AdapterBuilderStageContext context)
{
//Get parameters
List<int> convertedArgs = context["IDArgRefs"] as List<int>;
List<LocalReference> locals = context["IDLocalRefs"] as List<LocalReference>;
List<Expression> actualArgs = context["MethodInvoArgs"] as List<Expression>;
int i = 0;
//For each argument
for (int j = 0; j < actualArgs.Count; j++)
{
//If it has been converted
if (convertedArgs.Contains(j))
{
//Change expression with reference to relevant local
actualArgs[j] = new ReferenceExpression(locals[i++]);
}
}
}
protected void CreateIInvocationInvokeOnTarget(
ClassEmitter targetTypeEmitter,
NestedClassEmitter nested,
ParameterInfo[] parameters,
FieldReference targetField,
MethodInfo callbackMethod)
{
const MethodAttributes methodAtts = MethodAttributes.Public | MethodAttributes.Final | MethodAttributes.Virtual;
MethodEmitter method =
nested.CreateMethod ("InvokeMethodOnTarget", methodAtts, typeof (void));
Expression[] args = new Expression[parameters.Length];
// Idea: instead of grab parameters one by one
// we should grab an array
Hashtable byRefArguments = new Hashtable();
for(int i = 0; i < parameters.Length; i++)
{
ParameterInfo param = parameters[i];
Type paramType = param.ParameterType;
if (HasGenericParameters(paramType))
{
paramType = paramType.GetGenericTypeDefinition().MakeGenericType(nested.GetGenericArgumentsFor(paramType));
}
else if (paramType.IsGenericParameter)
{
paramType = nested.GetGenericArgument(paramType.Name);
}
if (paramType.IsByRef)
{
LocalReference localReference = method.CodeBuilder.DeclareLocal(paramType.GetElementType());
method.CodeBuilder.AddStatement(
new AssignStatement(localReference,
new ConvertExpression(paramType.GetElementType(),
new MethodInvocationExpression(SelfReference.Self,
typeof(AbstractInvocation).GetMethod(
"GetArgumentValue"),
new LiteralIntExpression(i)))));
ByRefReference byRefReference = new ByRefReference(localReference);
args[i] = new ReferenceExpression(byRefReference);
byRefArguments[i] = localReference;
}
else
{
args[i] =
new ConvertExpression(paramType,
new MethodInvocationExpression(SelfReference.Self,
typeof(AbstractInvocation).GetMethod("GetArgumentValue"),
new LiteralIntExpression(i)));
}
}
MethodInvocationExpression baseMethodInvExp;
if (callbackMethod.IsGenericMethod)
{
callbackMethod = callbackMethod.MakeGenericMethod(nested.GetGenericArgumentsFor(callbackMethod));
}
baseMethodInvExp = new MethodInvocationExpression(targetField, callbackMethod, args);
baseMethodInvExp.VirtualCall = true;
LocalReference ret_local = null;
if (callbackMethod.ReturnType != typeof(void))
{
if (callbackMethod.ReturnType.IsGenericParameter)
{
ret_local = method.CodeBuilder.DeclareLocal(nested.GetGenericArgument(callbackMethod.ReturnType.Name));
}
else if (HasGenericParameters(callbackMethod.ReturnType))
{
ret_local =
method.CodeBuilder.DeclareLocal(
callbackMethod.ReturnType.GetGenericTypeDefinition().MakeGenericType(
nested.GetGenericArgumentsFor(callbackMethod.ReturnType)));
}
else
{
ret_local = method.CodeBuilder.DeclareLocal(callbackMethod.ReturnType);
}
method.CodeBuilder.AddStatement(new AssignStatement(ret_local, baseMethodInvExp));
}
else
{
method.CodeBuilder.AddStatement(new ExpressionStatement(baseMethodInvExp));
}
foreach(DictionaryEntry byRefArgument in byRefArguments)
{
int index = (int) byRefArgument.Key;
LocalReference localReference = (LocalReference) byRefArgument.Value;
method.CodeBuilder.AddStatement(
new ExpressionStatement(
new MethodInvocationExpression(SelfReference.Self,
typeof(AbstractInvocation).GetMethod("SetArgumentValue"),
new LiteralIntExpression(index),
new ConvertExpression(typeof(object), localReference.Type,
new ReferenceExpression(localReference)))
));
}
if (callbackMethod.ReturnType != typeof(void))
{
MethodInvocationExpression setRetVal =
new MethodInvocationExpression(SelfReference.Self,
typeof(AbstractInvocation).GetMethod("set_ReturnValue"),
new ConvertExpression(typeof(object), ret_local.Type, ret_local.ToExpression()));
method.CodeBuilder.AddStatement(new ExpressionStatement(setRetVal));
}
method.CodeBuilder.AddStatement(new ReturnStatement());
}