COMP: Report build error if vtkMRMLCopyVectorMacro argument is missing

Missing vtkMRMLCopyVectorMacro arguments caused build errors on Mac but not with VisualStudio,
because VisualStudio ignores if an unused macro argument is missing.

Made the behavior consistent on all compilers by using the vectorType argument.
vectorSize argument is still not used, but it should rarely happen that somebody just removes
vectorSize and not the vectorType argument when copy-pasting.

git-svn-id: http://svn.slicer.org/Slicer4/trunk@26934 3bd1e089-480b-0410-8dfb-8563597acbee

Author: lassoan

Libs/MRML/Core/vtkMRMLNodePropertyMacros.h

@@ -257,7 +257,19 @@
 
 /// Macro for copying floating-point (float or double) vector node property value.
 #define vtkMRMLCopyVectorMacro(propertyName, vectorType, vectorSize) \
-  this->Set##propertyName(this->SafeDownCast(copySourceNode)->Get##propertyName());
+    { \
+    /* Currently, vectorType and vectorSize is not essential, but in the future */ \
+    /* this information may be used more. */ \
+    vectorType* sourceVector = this->SafeDownCast(copySourceNode)->Get##propertyName(); \
+    if (sourceVector != NULL) \
+      { \
+      this->Set##propertyName(sourceVector); \
+      } \
+    else \
+      { \
+      vtkErrorMacro("Failed to copy #xmlAttributeName attribute value: source node returned NULL"); \
+      } \
+    }
 
 /// @}