markharwood commented on a change in pull request #1541:
URL: https://github.com/apache/lucene-solr/pull/1541#discussion_r444134039
##########
File path: lucene/core/src/java/org/apache/lucene/util/automaton/RegExp.java
##########
@@ -743,6 +792,30 @@ private Automaton
toAutomatonInternal(Map<String,Automaton> automata,
}
return a;
}
+ private Automaton toCaseInsensitiveChar(int codepoint, int
maxDeterminizedStates) {
+ Automaton case1 = Automata.makeChar(codepoint);
+ int altCase = Character.isLowerCase(codepoint) ?
Character.toUpperCase(codepoint) : Character.toLowerCase(codepoint);
+ Automaton result;
+ if (altCase != codepoint) {
+ result = Operations.union(case1, Automata.makeChar(altCase));
+ result = MinimizationOperations.minimize(result, maxDeterminizedStates);
+ } else {
+ result = case1;
+ }
+ return result;
+ }
Review comment:
Would that be an argument for having a bit mask for case sensitivity
flags instead of a Boolean? Java has the UNICODE_CASE flag which differs from
the ASCII one and it might be an idea to leave something in the API open to
future work.
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscr...@lucene.apache.org
For additional commands, e-mail: issues-h...@lucene.apache.org
