TODO ideas

TODO

• Backreferences. Troubles in the compiler.

• More unit tests; try for full coverage with simple tests.

• Convert runtime to take CharSequence instead of array/indices.

• Add thread interrupt checks in appropriate places; where are those?

Errors

• parser to report offsets in error messages
• all error messages informative
• Runtime (Runtime, Dfa) to throw RegexRuntimeException

Code structure

• Get rid of 'Guts' and 'Runtime', sink all this into RegExp.

• Decide how far to push java style; this code seems like a place where 'package access' fields are in fact reasonable.

• final / private, however, when trivally possible.

• bitflags versus enum sets in the guts

• Performance measurement / tuning