C++ API improvement

Description:
    - Reorganized some exception classes to reflect the HDF5 object
      hierarchy and provide extendibility.
        DataSetIException -> LocationException -> Exception
        DataTypeIException -> LocationException -> Exception
        GroupIException -> LocationException -> Exception
        AttributeIException -> LocationException -> Exception
        FileIException -> GroupIException -> LocationException -> Exception
    - Added throwException() to these subclasses and use it in H5Location
        and H5Object member functions to throw an exception that is specific
        to the object that invokes the member function.  Applications that
        catch the base exception can continue to do the same.
    - Many cleanup for inconsistencies in comments/headers.
Platforms tested:
    Linux/64 (jelly)
    Linux/64 (platypus)
    Darwin (osx1010test)

1 files changed, 3 insertions, 0 deletions

diff --git a/c++/src/H5DataType.h b/c++/src/H5DataType.h
index 29cc990..efb0c14 100644
--- a/c++/src/H5DataType.h
+++ b/c++/src/H5DataType.h
@@ -122,6 +122,9 @@ class H5_DLLCPP DataType : public H5Object {
         ///\brief Returns this class name.
         virtual H5std_string fromClass () const { return("DataType"); }
 
+        // Throw DataTypeIException.
+        virtual void throwException(const H5std_string& func_name, const H5std_string& msg) const;
+
         // Creates a copy of an existing DataType using its id
         DataType(const hid_t type_id);