本文整理汇总了C++中Datum::connectUpstream方法的典型用法代码示例。如果您正苦于以下问题：C++ Datum::connectUpstream方法的具体用法？C++ Datum::connectUpstream怎么用？C++ Datum::connectUpstream使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Datum的用法示例。
在下文中一共展示了Datum::connectUpstream方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: getValue
PyObject* ShapeInputHandler::getValue() const
{
// Otherwise, OR together all of the input shapes
// (or return NULL if any of them are invalid)
PyObject* out = NULL;
bool valid = true;
PyObject* or_function = PyUnicode_FromString("__or__");
for (auto i : in)
{
// We check to see if the pointer has been deleted or has been reduced
// to a QObject (because destroyed is emitted before complete destruction,
// see note above in SingleInputHandler::hasInput)
if (i.isNull() || dynamic_cast<Datum*>(i->parent()) == NULL)
{
continue;
}
// Link source and target
Q_ASSERT(dynamic_cast<Datum*>(i->parent()));
Datum* source = static_cast<Datum*>(i->parent());
Q_ASSERT(dynamic_cast<Datum*>(parent()));
Datum* target = static_cast<Datum*>(parent());
valid &= target->connectUpstream(source) && source->getValid();
if (!valid)
continue;
if (out == NULL)
{
out = source->getValue();
Py_INCREF(out);
}
else
{
PyObject* next = PyObject_CallMethodObjArgs(
out, or_function, source->getValue(), NULL);
Py_DECREF(out);
out = next;
}
}
Py_DECREF(or_function);
if (valid)
{
return out;
}
else
{
Py_XDECREF(out);
return NULL;
}
}