diff mercurial/fileset.py @ 38879:e79a69af1593

fileset: insert hints where status should be computed

This will allow us to compute status against a narrowed set of files.
For example, "path:build/ & (unknown() + missing())" is rewritten as
"path:build/ & <withstatus>(unknown() + missing(), 'unknown missing')",
and the status call can be narrowed by the left-hand-side matcher,
"path:build/".

mctx.buildstatus() calls will be solely processed by getmatchwithstatus().

--- a/mercurial/fileset.py	Sun Jul 22 11:12:55 2018 +0900
+++ b/mercurial/fileset.py	Sat Jul 21 20:27:53 2018 +0900
@@ -43,6 +43,9 @@
         raise error.ParseError(_("missing argument"))
     return methods[x[0]](mctx, *x[1:])
 
+def getmatchwithstatus(mctx, x, hint):
+    return getmatch(mctx, x)
+
 def stringmatch(mctx, x):
     return mctx.matcher([x])
 
@@ -443,6 +446,7 @@
         return mctx.predicate(sstate.__contains__, predrepr='subrepo')
 
 methods = {
+    'withstatus': getmatchwithstatus,
     'string': stringmatch,
     'symbol': stringmatch,
     'kindpat': kindpatmatch,