//
// Returns the MethodBase for "Invoke" from a delegate type, this is used
// to extract the signature of a delegate.
//
public static MethodInfo GetInvokeMethod(CompilerContext ctx, Type container_type, Type delegate_type)
{
Type dt = delegate_type;
Type[] g_args = null;
if (TypeManager.IsGenericType(delegate_type))
{
g_args = TypeManager.GetTypeArguments(delegate_type);
delegate_type = TypeManager.DropGenericTypeArguments(delegate_type);
}
Delegate d = TypeManager.LookupDelegate(delegate_type);
MethodInfo invoke;
if (d != null)
{
#if GMCS_SOURCE
if (g_args != null)
{
invoke = TypeBuilder.GetMethod(dt, d.InvokeBuilder);
#if MS_COMPATIBLE
ParametersCompiled p = (ParametersCompiled)d.Parameters.InflateTypes(g_args, g_args);
TypeManager.RegisterMethod(invoke, p);
#endif
return(invoke);
}
#endif
return(d.InvokeBuilder);
}
Expression ml = Expression.MemberLookup(ctx, container_type, null, dt,
"Invoke", Location.Null);
MethodGroupExpr mg = ml as MethodGroupExpr;
if (mg == null)
{
ctx.Report.Error(-100, Location.Null, "Internal error: could not find Invoke method!");
// FIXME: null will cause a crash later
return(null);
}
invoke = (MethodInfo)mg.Methods[0];
#if MS_COMPATIBLE
if (g_args != null)
{
AParametersCollection p = TypeManager.GetParameterData(invoke);
p = p.InflateTypes(g_args, g_args);
TypeManager.RegisterMethod(invoke, p);
return(invoke);
}
#endif
return(invoke);
}
