diff options
Diffstat (limited to 'src/libexpr')
| -rw-r--r-- | src/libexpr/eval.hh | 1 | ||||
| -rw-r--r-- | src/libexpr/primops.cc | 8 |
2 files changed, 6 insertions, 3 deletions
diff --git a/src/libexpr/eval.hh b/src/libexpr/eval.hh index 348a1b291..63d16bd2b 100644 --- a/src/libexpr/eval.hh +++ b/src/libexpr/eval.hh @@ -400,6 +400,7 @@ private: friend struct ExprSelect; friend void prim_getAttr(EvalState & state, const Pos & pos, Value * * args, Value & v); friend void prim_match(EvalState & state, const Pos & pos, Value * * args, Value & v); + friend void prim_split(EvalState & state, const Pos & pos, Value * * args, Value & v); friend struct Value; }; diff --git a/src/libexpr/primops.cc b/src/libexpr/primops.cc index 839fbb95c..3004e9a0a 100644 --- a/src/libexpr/primops.cc +++ b/src/libexpr/primops.cc @@ -3528,18 +3528,20 @@ static RegisterPrimOp primop_match({ /* Split a string with a regular expression, and return a list of the non-matching parts interleaved by the lists of the matching groups. */ -static void prim_split(EvalState & state, const Pos & pos, Value * * args, Value & v) +void prim_split(EvalState & state, const Pos & pos, Value * * args, Value & v) { auto re = state.forceStringNoCtx(*args[0], pos); try { - std::regex regex(re, std::regex::extended); + auto regex = state.regexCache->cache.find(re); + if (regex == state.regexCache->cache.end()) + regex = state.regexCache->cache.emplace(re, std::regex(re, std::regex::extended)).first; PathSet context; const std::string str = state.forceString(*args[1], context, pos); - auto begin = std::sregex_iterator(str.begin(), str.end(), regex); + auto begin = std::sregex_iterator(str.begin(), str.end(), regex->second); auto end = std::sregex_iterator(); // Any matches results are surrounded by non-matching results. |