Remove the RoseEngine and stream state pointers frose RoseContext, as
they are also present in core_info.
Unify stream state handing in Rose to always use a char * (we were often
a u8 * for no particularly good reason) and tidy up.
Replace the RoseLiteral structure with more program instructions; now,
instead of each literal ID leading to a RoseLiteral, it simply has a
program to run (and a delay rebuild program).
This commit also makes some other improvements:
* CHECK_STATE instruction, for use instead of a sparse iterator over a
single element.
* Elide some checks (CHECK_LIT_EARLY, ANCHORED_DELAY, etc) when not
needed.
* Flatten PUSH_DELAYED behaviour to one instruction per delayed
literal, rather than the mask/index-list approach used before.
* Simple program cache at compile time for deduplication.
Note that we have to be careful to leave the first lookaround entry in
place, if it's a dot. This should eventually be done with a program
instruction.
During prefilter region replacement, turn regions with very large max
bounds into repeats with inf max bound. This improves compile time and
the likelihood that we will actually be able to build an implementation
for such patterns.
- cleanups
- add sparse iter instructions
- merge "root" and "sparse iter" programs together
- move program execution to new file program_runtime.h
- simplify EOD execution
This allows sibling character classes to be merged together before graph
component splitting is done by calcComponents().
In particular, this transforms (A|a)(B|b)(C|c) into [Aa][Bb][Cc]
earlier.
- Use program for EOD sparse iterator
- Use program for literal sparse iterator
- Eliminate RoseRole, RosePred, RoseVertexProps::role
- Small performance optimizations
As somMayGoBackwards() operates on a copy of the graph where virtual
starts have been collapsed on to startDs, we need to be careful not to
create parallel edges.
Repeats may be removed (e.g. by pruning in role aliasing passes)
leaving "holes" in the top map. Track the next top to use explicitly,
rather than using repeats.size().
