feat: Add opt-in PCRE2 regex engine and Java-regex compatibility test suite#17685

Open

baibaichen wants to merge 38 commits into

facebookincubator:mainfrom

baibaichen:feat/regex-compat-pcre2-cmake

Commits on Jun 1, 2026

build(regex-compat): add opt-in PCRE2 dependency

baibaichen
and
Copilot
committed
build(regex-compat): bump PCRE2 10.45 -> 10.47

baibaichen
and
Copilot
committed
build(regex-compat): add opt-in Java backend probe (VELOX_ENABLE_REGEX_COMPAT_JAVA_BACKEND)

baibaichen
and
Copilot
committed
regex-compat: add Re2Regex backend (Phase 2 of test suite)

baibaichen
and
Copilot
committed
regex-compat: add Pcre2Regex backend (Phase 4)

baibaichen
and
Copilot
committed
regex-compat: add JavaRegex backend via embedded JVM (Phase 6)

baibaichen
and
Copilot
committed
regex-compat: add typed-test fixture for 3-backend cross-checking (Phase 7)

baibaichen
and
Copilot
committed
regex-compat: port P0 pcre4j test trio over typed-test (Phases 8-10)

baibaichen
and
Copilot
committed
regex-compat: add README (Phase 11)
baibaichen
committed
regex-compat: port remaining MatcherMatchingTests + add per-backend tally

baibaichen
and
Copilot
committed
regex-compat: port MatcherReplacementTests + fix JNI UTF-16 transcoding

authored and
baibaichen
committed
regex-compat: port MatcherResultsTests (12 cases)

authored and
baibaichen
committed
regex-compat: port MatcherMatchResultTests engine-relevant cases (2 of 9)

authored and
baibaichen
committed
regex-compat: port PatternSplitTests (13 cases)

authored and
baibaichen
committed
regex-compat: port MatcherUnicodeTests (6 cases)

authored and
baibaichen
committed
regex-compat: port PatternTests quote + (?x) COMMENTS cases (6 of remaining)

authored and
baibaichen
committed
regex-compat: add OpenJDK 17 TestCases.txt corpus diff test (299 cases)

authored and
baibaichen
committed
regex-compat: extend OpenJDK corpus test to all 3 corpus files

authored and
baibaichen
committed
java_pcre2_translator: Phase 1 scaffolding

authored and
baibaichen
committed
java_pcre2_translator: Phase 2 — port RangeSet

authored and
baibaichen
committed
java_pcre2_translator: Phase 3 — port PropertyMap

authored and
baibaichen
committed
java_pcre2_translator: Phase 4 — AST + parser + evaluator + renderer + JdkPropertyExpander

copilot
authored and
baibaichen
committed
java_pcre2_translator: Phase 5 — top-level JavaRegexTranslator pipeline

authored and
baibaichen
committed
regex-compat: Phase 6 — wire JavaRegexTranslator into Pcre2Regex

authored and
baibaichen
committed
regex-compat: Phase 7 — extend translator to RE2 backend (P1 complete)

authored and
baibaichen
committed
Fix escaped non-ASCII class literals

authored and
baibaichen
committed
Allow PCRE2 surrogate corpus patterns

authored and
baibaichen
committed
Port pcre4j regex translator fixes

authored and
baibaichen
committed
regex-compat: Phase P1.7 — close the last 6 PCRE2 supplementary-surrogate failures

authored and
baibaichen
committed
Add ported OpenJDK RegExTest coverage

baibaichen
and
Copilot
committed
regex-compat: add OpenJDK GraphemeTestCases corpus (Java-only)

baibaichen
and
Copilot
committed
regex-compat: extend RegExTest port (16 more tests)

baibaichen
and
Copilot
committed
regex-compat: translator pre-folds cased literals for UNICODE_CASE

baibaichen
and
Copilot
committed
regex-compat: exclude GTEST_SKIP from per-backend tally

authored and
baibaichen
committed
regex-compat: report 'translatable subset' rate excluding engine-impossible patterns

authored and
baibaichen
committed
regex-compat: fix dangling-pointer warning in ClassBodyParserTest + apply pre-commit formatting

authored and
baibaichen
committed

Commits on Jun 2, 2026

regex-compat: gate JNI-dependent code behind VELOX_REGEX_COMPAT_HAS_JAVA

copilot
and
Copilot
committed

Commits on Jun 3, 2026

regex-compat: also gate JavaRegex.cpp / JvmFixture.cpp on VELOX_REGEX_COMPAT_HAS_JAVA

copilot
and
Copilot
committed