void DefineAsyncMethods (CallingConventions cc)
{
var iasync_result = Module.PredefinedTypes.IAsyncResult;
var async_callback = Module.PredefinedTypes.AsyncCallback;
//
// It's ok when async types don't exist, the delegate will have Invoke method only
//
if (!iasync_result.Define () || !async_callback.Define ())
return;
//
// BeginInvoke
//
ParametersCompiled async_parameters;
if (Parameters.Count == 0) {
async_parameters = ParametersCompiled.EmptyReadOnlyParameters;
} else {
var compiled = new Parameter[Parameters.Count];
for (int i = 0; i < compiled.Length; ++i) {
var p = parameters[i];
compiled[i] = new Parameter (new TypeExpression (parameters.Types[i], Location),
p.Name,
p.ModFlags & (Parameter.Modifier.REF | Parameter.Modifier.OUT),
p.OptAttributes == null ? null : p.OptAttributes.Clone (), Location);
}
async_parameters = new ParametersCompiled (compiled);
}
async_parameters = ParametersCompiled.MergeGenerated (Compiler, async_parameters, false,
new Parameter[] {
new Parameter (new TypeExpression (async_callback.TypeSpec, Location), "callback", Parameter.Modifier.NONE, null, Location),
new Parameter (new TypeExpression (TypeManager.object_type, Location), "object", Parameter.Modifier.NONE, null, Location)
},
new [] {
async_callback.TypeSpec,
TypeManager.object_type
}
);
BeginInvokeBuilder = new Method (this, null,
new TypeExpression (iasync_result.TypeSpec, Location), MethodModifiers,
new MemberName ("BeginInvoke"), async_parameters, null);
BeginInvokeBuilder.Define ();
//
// EndInvoke is a bit more interesting, all the parameters labeled as
// out or ref have to be duplicated here.
//
//
// Define parameters, and count out/ref parameters
//
ParametersCompiled end_parameters;
int out_params = 0;
foreach (Parameter p in Parameters.FixedParameters) {
if ((p.ModFlags & Parameter.Modifier.ISBYREF) != 0)
++out_params;
}
if (out_params > 0) {
Parameter[] end_params = new Parameter[out_params];
int param = 0;
for (int i = 0; i < Parameters.FixedParameters.Length; ++i) {
Parameter p = parameters [i];
if ((p.ModFlags & Parameter.Modifier.ISBYREF) == 0)
continue;
end_params [param++] = new Parameter (new TypeExpression (p.Type, Location),
p.Name,
p.ModFlags & (Parameter.Modifier.REF | Parameter.Modifier.OUT),
p.OptAttributes == null ? null : p.OptAttributes.Clone (), Location);
}
end_parameters = new ParametersCompiled (end_params);
} else {
end_parameters = ParametersCompiled.EmptyReadOnlyParameters;
}
end_parameters = ParametersCompiled.MergeGenerated (Compiler, end_parameters, false,
new Parameter (
new TypeExpression (iasync_result.TypeSpec, Location),
"result", Parameter.Modifier.NONE, null, Location),
iasync_result.TypeSpec);
//
// Create method, define parameters, register parameters with type system
//
EndInvokeBuilder = new Method (this, null, ReturnType, MethodModifiers, new MemberName ("EndInvoke"), end_parameters, null);
EndInvokeBuilder.Define ();
}