Create a dedicated "Exception" sub-namespace and remove the "AFP"
prefix, a leftover from the pre-namespace era.
Change-Id: I7e5fded9316d8b7d1628bc1a6ba8b1879ac901e1
Introduce a clear distinction between internal exceptions and
user-visible exceptions, leaving AFPException as base abstract class.
Later, it should be possible to narrow some types around, e.g. in
ParserStatus (that might work with user-visible exceptions only).
Also a future TODO is putting all the exceptions in their own namespace
(probably ...\Parser\Exception).
Change-Id: I4e33a45117f0a3e73af03cc1e3f2734beaf2b5e1
This is achieved by creating a new ParserStatus class. Aside from the
result of parse(), it contains whether the cache was warm. This can be
used to differentiate profiling data as part of T231112.
Another use case is returning non-fatal warnings (T269770).
Change-Id: Ifcbda861ce1a44bbe9bffba5b83cd9ef338a8dba
