diff options
Diffstat (limited to 'Lib/re.py')
| -rw-r--r-- | Lib/re.py | 18 |
1 files changed, 5 insertions, 13 deletions
@@ -119,9 +119,9 @@ This module also defines an exception 'error'. """ -import sys import sre_compile import sre_parse +import functools try: import _locale except ImportError: @@ -226,7 +226,7 @@ def compile(pattern, flags=0): def purge(): "Clear the regular expression caches" _cache.clear() - _cache_repl.clear() + _compile_repl.cache_clear() def template(pattern, flags=0): "Compile a template pattern, returning a pattern object" @@ -270,7 +270,6 @@ def escape(pattern): # internals _cache = {} -_cache_repl = {} _pattern_type = type(sre_compile.compile("", 0)) @@ -303,17 +302,10 @@ def _compile(pattern, flags): _cache[type(pattern), pattern, flags] = p, loc return p +@functools.lru_cache(_MAXCACHE) def _compile_repl(repl, pattern): # internal: compile replacement pattern - try: - return _cache_repl[repl, pattern] - except KeyError: - pass - p = sre_parse.parse_template(repl, pattern) - if len(_cache_repl) >= _MAXCACHE: - _cache_repl.clear() - _cache_repl[repl, pattern] = p - return p + return sre_parse.parse_template(repl, pattern) def _expand(pattern, match, template): # internal: match.expand implementation hook @@ -353,7 +345,7 @@ class Scanner: for phrase, action in lexicon: gid = s.opengroup() p.append(sre_parse.SubPattern(s, [ - (SUBPATTERN, (gid, sre_parse.parse(phrase, flags))), + (SUBPATTERN, (gid, 0, 0, sre_parse.parse(phrase, flags))), ])) s.closegroup(gid, p[-1]) p = sre_parse.SubPattern(s, [(BRANCH, (None, p))]) |