This inheritance list is sorted roughly, but not completely, alphabetically:

[detail level 12]

CAttReader	A class for reading input in AT&T text format and converting it into transducer(s)
▼CHfstException	Base class for HfstExceptions
CContextTransducersAreNotAutomataException	Transducers given as rule context are not automata
CEmptySetOfContextsException	The set of transducer pairs is empty
CEmptyStringException	An argument string is an empty string
CEndOfStreamException	The stream is at end
CFlagDiacriticsAreNotIdentitiesException	Flag diacritics encountered on one but not the other side of a transition
CFunctionNotImplementedException	Function has not been implemented (yet)
CHfstFatalException	An error happened probably due to a bug in the HFST code
CHfstTransducerTypeMismatchException	Two or more HfstTransducers are not of the same type
CImplementationTypeNotAvailableException	The library required by the implementation type requested is not linked to HFST
CIncorrectUtf8CodingException	String is not valid utf-8
CMetadataException	A piece of metadata in an HFST header is not supported
CMissingOpenFstInputSymbolTableException	An OpenFst transducer does not have an input symbol table
CNotTransducerStreamException	The stream does not contain transducers
CNotValidAttFormatException	The stream is not in valid AT&T format
CNotValidLexcFormatException	The input is not in valid LexC format
CNotValidPrologFormatException	The input is not in valid prolog format
CSpecifiedTypeRequiredException	The type of a transducer is not specified
CStateIndexOutOfBoundsException	The state number argument is not valid
CStateIsNotFinalException	State is not final (and cannot have a final weight)
CStreamCannotBeWrittenException	Stream cannot be written
CStreamIsClosedException	Stream is closed
CStreamNotReadableException	Stream cannot be read
CSymbolNotFoundException	A bug in the HFST code
CTransducerHasWrongTypeException	Transducer has wrong type
CTransducerHeaderException	Transducer has a malformed HFST header
CTransducerIsCyclicException	Transducer is cyclic
CTransducersAreNotAutomataException	Transducers are not automata
CTransducerTypeMismatchException	Two or more transducers do not have the same type
CHfstBasicTransducer	A simple transducer class with tropical weights
CHfstBasicTransition	A transition class that consists of a target state, input and output symbols and a a tropical weight
CHfstInputStream	A stream for reading HFST binary transducers
CHfstOutputStream	A stream for writing binary transducers
CHfstTokenizer	A tokenizer for creating transducers from UTF-8 strings
CHfstTransducer	A synchronous finite-state transducer
CMultiCharSymbolTrie	TODO: documentation ???
CPmatchContainer	A class for performing pattern matching
CPrologReader	A class for reading input in prolog text format and converting it into transducer(s)
CXreCompiler	A compiler holding information needed to compile XREs