This introduces a general way to use public enums both in the C++ and
the (upcoming) C API. For the C++ case, we now use enum classes rather
than enums for public enums. This also includes definitions for
C API to_string conversions for public enums. C API definitions in
cvc5_types.h are only included from the C API, guarded via a macro
(thus, for now, not included yet when the header is included).
The public cvc5 API now lives in the cvc5 namespace. All internal parts were moved into the (new) internal namespace.
The final hierarchy will be as follows:
cvc5
~~ public API
::context
::internal
::parser
::main
After this PR it will be:
cvc5
~~ public API
::internal
::context
::main
::parser
This commit removes the `FLOATINGPOINT_TO_FP_GENERIC` kind, which was
only used in the parser and immediately rewritten by the floating-point
arithmetic solver. It extends the `ParseOp` class to handle indexed
operators of which we do not know the kind (`to_fp` in this case) by
storing the name and the indices. The name is then resolved later when
we have parsed the arguments.
This commit removes `Op::getIndices()`. As discussed offline, the
semantics of that method were confusing and the use cases are covered by
`Op::getNumIndices()` and `Op::operator[]()` (which mirror
`Term::getNumChildren()` and `Term::operator[]()`).
Future changes are going to update the Python and Java bindings to
support `Op::operator[]()`.
This renames the arithmetic internal and API kind PLUS to ADD for
consistency with our naming scheme for other operators (e.g.,
BITVECTOR_ADD, FLOATINGPOINT_ADD).
