internal bool TryGetPropertySetterExplicit(string name, out ComMethodDesc method, Type limitType, bool holdsNull)
{
EnsureScanDefinedMethods();
int hresult = GetIDsOfNames(DispatchObject, name, out int dispId);
if (hresult == ComHresults.S_OK)
{
// we do not know whether we have put or putref here
// and we will not guess and pretend we found both.
ComMethodDesc put = new ComMethodDesc(name, dispId, ComTypes.INVOKEKIND.INVOKE_PROPERTYPUT);
_comTypeDesc.AddPut(name, put);
ComMethodDesc putref = new ComMethodDesc(name, dispId, ComTypes.INVOKEKIND.INVOKE_PROPERTYPUTREF);
_comTypeDesc.AddPutRef(name, putref);
if (ComBinderHelpers.PreferPut(limitType, holdsNull))
{
method = put;
}
else
{
method = putref;
}
return(true);
}
if (hresult == ComHresults.DISP_E_UNKNOWNNAME)
{
method = null;
return(false);
}
throw Error.CouldNotGetDispId(name, string.Format(CultureInfo.InvariantCulture, "0x{0:X})", hresult));
}
protected virtual ComUnwrappedMetaObject UnwrapSelf()
{
return(new ComUnwrappedMetaObject(
ComObject.RcwFromComObject(Expression),
Restrictions.Merge(ComBinderHelpers.GetTypeRestrictionForDynamicMetaObject(this)),
((ComObject)Value).RuntimeCallableWrapper
));
}
public override DynamicMetaObject BindInvoke(InvokeBinder binder, DynamicMetaObject[] args)
{
Requires.NotNull(binder);
if (_self.TryGetGetItem(out ComMethodDesc method))
{
bool[] isByRef = ComBinderHelpers.ProcessArgumentsForCom(ref args);
return(BindComInvoke(args, method, binder.CallInfo, isByRef));
}
return(base.BindInvoke(binder, args));
}
public override DynamicMetaObject BindGetIndex(GetIndexBinder binder, DynamicMetaObject[] indexes)
{
Requires.NotNull(binder);
if (_self.TryGetGetItem(out ComMethodDesc getItem))
{
bool[] isByRef = ComBinderHelpers.ProcessArgumentsForCom(ref indexes);
return(BindComInvoke(indexes, getItem, binder.CallInfo, isByRef));
}
return(base.BindGetIndex(binder, indexes));
}
internal bool TryGetPropertySetter(string name, out ComMethodDesc method, Type limitType, bool holdsNull)
{
EnsureScanDefinedMethods();
if (ComBinderHelpers.PreferPut(limitType, holdsNull))
{
return(_comTypeDesc.TryGetPut(name, out method) ||
_comTypeDesc.TryGetPutRef(name, out method));
}
return(_comTypeDesc.TryGetPutRef(name, out method) ||
_comTypeDesc.TryGetPut(name, out method));
}
private DynamicMetaObject BindGetOrInvoke(DynamicMetaObject[] args, CallInfo callInfo)
{
IDispatchComObject target = _callable.DispatchComObject;
string name = _callable.MemberName;
if (target.TryGetMemberMethod(name, out ComMethodDesc method) ||
target.TryGetMemberMethodExplicit(name, out method))
{
bool[] isByRef = ComBinderHelpers.ProcessArgumentsForCom(ref args);
return(BindComInvoke(method, args, callInfo, isByRef));
}
return(null);
}
public override DynamicMetaObject BindInvokeMember(InvokeMemberBinder binder, DynamicMetaObject[] args)
{
Requires.NotNull(binder, nameof(binder));
if (_self.TryGetMemberMethod(binder.Name, out ComMethodDesc method) ||
_self.TryGetMemberMethodExplicit(binder.Name, out method))
{
bool[] isByRef = ComBinderHelpers.ProcessArgumentsForCom(ref args);
return(BindComInvoke(args, method, binder.CallInfo, isByRef));
}
return(base.BindInvokeMember(binder, args));
}
public override DynamicMetaObject BindSetIndex(SetIndexBinder binder, DynamicMetaObject[] indexes, DynamicMetaObject value)
{
Requires.NotNull(binder);
if (_self.TryGetSetItem(out ComMethodDesc setItem))
{
bool[] isByRef = ComBinderHelpers.ProcessArgumentsForCom(ref indexes);
isByRef = isByRef.AddLast(false);
DynamicMetaObject result = BindComInvoke(indexes.AddLast(value), setItem, binder.CallInfo, isByRef);
// Make sure to return the value; some languages need it.
return(new DynamicMetaObject(
Expression.Block(result.Expression, Expression.Convert(value.Expression, typeof(object))),
result.Restrictions
));
}
return(base.BindSetIndex(binder, indexes, value));
}
internal DynamicMetaObject Invoke()
{
_keywordArgNames = _callInfo.ArgumentNames.ToArray();
_totalExplicitArgs = _args.Length;
Type[] marshalArgTypes = new Type[_args.Length];
// We already tested the instance, so no need to test it again
for (int i = 0; i < _args.Length; i++)
{
DynamicMetaObject curMo = _args[i];
_restrictions = _restrictions.Merge(ComBinderHelpers.GetTypeRestrictionForDynamicMetaObject(curMo));
marshalArgTypes[i] = MarshalType(curMo, _isByRef[i]);
}
_varEnumSelector = new VarEnumSelector(marshalArgTypes);
return(new DynamicMetaObject(
CreateScope(MakeIDispatchInvokeTarget()),
BindingRestrictions.Combine(_args).Merge(_restrictions)
));
}
public override DynamicMetaObject BindSetIndex(SetIndexBinder binder, DynamicMetaObject[] indexes, DynamicMetaObject value)
{
IDispatchComObject target = _callable.DispatchComObject;
string name = _callable.MemberName;
bool holdsNull = value.Value == null && value.HasValue;
if (target.TryGetPropertySetter(name, out ComMethodDesc method, value.LimitType, holdsNull) ||
target.TryGetPropertySetterExplicit(name, out method, value.LimitType, holdsNull))
{
bool[] isByRef = ComBinderHelpers.ProcessArgumentsForCom(ref indexes);
isByRef = isByRef.AddLast(false);
DynamicMetaObject result = BindComInvoke(method, indexes.AddLast(value), binder.CallInfo, isByRef);
// Make sure to return the value; some languages need it.
return(new DynamicMetaObject(
Expression.Block(result.Expression, Expression.Convert(value.Expression, typeof(object))),
result.Restrictions
));
}
return(base.BindSetIndex(binder, indexes, value));
}
