mirror of
https://github.com/MarginaliaSearch/MarginaliaSearch.git
synced 2025-02-24 13:19:02 +00:00
1d34224416
Look, this will make the git history look funny, but trimming unnecessary depth from the source tree is a very necessary sanity-preserving measure when dealing with a super-modularized codebase like this one. While it makes the project configuration a bit less conventional, it will save you several clicks every time you jump between modules. Which you'll do a lot, because it's *modul*ar. The src/main/java convention makes a lot of sense for a non-modular project though. This ain't that. |
||
|---|---|---|
| .. | ||
| java/nu/marginalia/gregex | ||
| build.gradle | ||
| readme.md | ||
Guarded Regex
This is a simple library for creating guarded regular expressions. Pattern matching in Java is pretty slow even with compiled regular expressions.
Guarding them with a startsWith(), endsWith() or contains() can be an order of magnitude
faster, but leads to an unfortunate spreading out of the logic across the pattern and the guard
condition.
Guarded regexes aims to fix this. Instead of code like
Pattern pattern = Pattern.compile("[123]?foo(bar|baz){2,5}");
void ifTheThingDoTheThing(String str) {
if (str.contains("foo") && pattern.matcher(str).matches()) {
doTheThing();
}
}
you get the more expressive variant
GuardedRegex thingPredicate =
GuardedRegexFactory.contains("foo", "[123]?foo(bar|baz){2,5}");
void ifTheThingDoTheThing(String str) {
if (thingPredicate.test(str)) {
doTheThing();
}
}