diff mercurial/fileset.py @ 38865:899b4c74209c

fileset: combine union of basic patterns into single matcher

This appears to improve query performance in a big repository than I thought.
Writing less Python in a hot loop, faster computation we gain.

  $ hg files --cwd mozilla-central --time 'set:a* + b* + c* + d* + e*'
  (orig) time: real 0.670 secs (user 0.640+0.000 sys 0.030+0.000)
  (new)  time: real 0.210 secs (user 0.180+0.000 sys 0.020+0.000)

--- a/mercurial/fileset.py	Sat Jul 21 17:13:34 2018 +0900
+++ b/mercurial/fileset.py	Sat Jul 21 17:19:12 2018 +0900
@@ -50,6 +50,12 @@
     return stringmatch(mctx, _getkindpat(x, y, matchmod.allpatternkinds,
                                          _("pattern must be a string")))
 
+def patternsmatch(mctx, *xs):
+    allkinds = matchmod.allpatternkinds
+    patterns = [getpattern(x, allkinds, _("pattern must be a string"))
+                for x in xs]
+    return mctx.matcher(patterns)
+
 def andmatch(mctx, x, y):
     xm = getmatch(mctx, x)
     ym = getmatch(mctx, y)
@@ -436,6 +442,7 @@
     'string': stringmatch,
     'symbol': stringmatch,
     'kindpat': kindpatmatch,
+    'patterns': patternsmatch,
     'and': andmatch,
     'or': ormatch,
     'minus': minusmatch,