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⚡ Cache regex compilation to optimize custom recognizer performance #9

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⚡ Cache regex compilation to optimize custom recognizer performance #9

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6 changes: 5 additions & 1 deletion openmed/openmed/core/custom_recognizer.py
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Original file line number Diff line number Diff line change
Expand Up @@ -368,6 +368,7 @@ def _parse_rules(
) -> tuple[_CompiledRule, ...]:
entries = _expand_entries(values, require_label=require_label)
rules = []
_compiled: dict[tuple[str, int], re.Pattern[str]] = {}
for index, (entry, default_label) in enumerate(entries):
raw_value, label, entry_case_sensitive, confidence, rule_id = _parse_entry(
entry,
Expand All @@ -379,12 +380,15 @@ def _parse_rules(
)
pattern = re.escape(raw_value) if kind.endswith("_term") else raw_value
flags = 0 if entry_case_sensitive else re.IGNORECASE
cache_key = (pattern, flags)
if cache_key not in _compiled:
_compiled[cache_key] = re.compile(pattern, flags)
rules.append(
_CompiledRule(
kind=kind,
label=label,
rule_id=rule_id,
pattern=re.compile(pattern, flags),
pattern=_compiled[cache_key],
confidence=confidence,
)
)
Expand Down