dirstate: move management of nonnormal sets into dirstate map

dirstate: move management of nonnormal sets into dirstate map

The dirstate map owns the nonnormal sets, and so should be the class to update
them.  A future implementation of the dirstate will manage these maps
differently.

The action of clearing ambiguous times is now entirely controlled by the
dirstate map, so it moves there too.

Differential Revision: https://phab.mercurial-scm.org/D1341

--- a/mercurial/dirstate.py	Wed Nov 15 01:07:42 2017 -0800
+++ b/mercurial/dirstate.py	Wed Nov 15 01:07:42 2017 -0800
@@ -415,10 +415,6 @@
             self._map.dirs.addpath(f)
         self._dirty = True
         self._updatedfiles.add(f)
-        if state != 'n' or mtime == -1:
-            self._map.nonnormalset.add(f)
-        if size == -2:
-            self._map.otherparentset.add(f)
         self._map.addfile(f, state, mode, size, mtime)
 
     def normal(self, f):
@@ -490,7 +486,6 @@
                 elif entry[0] == 'n' and entry[2] == -2: # other parent
                     size = -2
                     self._map.otherparentset.add(f)
-        self._map.nonnormalset.add(f)
         self._map.removefile(f, size)
         if size == 0:
             self._map.copymap.pop(f, None)
@@ -506,8 +501,6 @@
         if self._map.dropfile(f):
             self._dirty = True
             self._droppath(f)
-            if f in self._map.nonnormalset:
-                self._map.nonnormalset.remove(f)
             self._map.copymap.pop(f, None)
 
     def _discoverpath(self, path, normed, ignoremissing, exists, storemap):
@@ -631,12 +624,7 @@
 
             # emulate dropping timestamp in 'parsers.pack_dirstate'
             now = _getfsnow(self._opener)
-            dmap = self._map
-            for f in self._updatedfiles:
-                e = dmap.get(f)
-                if e is not None and e[0] == 'n' and e[3] == now:
-                    dmap.addfile(f, e[0], e[1], e[2], -1)
-                    self._map.nonnormalset.add(f)
+            self._map.clearambiguoustimes(self._updatedfiles, now)
 
             # emulate that all 'dirstate.normal' results are written out
             self._lastnormaltime = 0
@@ -1229,8 +1217,8 @@
     - `dirfoldmap` is a dict mapping normalized directory names to the
       denormalized form that they appear as in the dirstate.
 
-    Once instantiated, the nonnormalset, otherparentset, dirs, filefoldmap and
-    dirfoldmap views must be maintained by the caller.
+    Once instantiated, the dirs, filefoldmap and dirfoldmap views must be
+    maintained by the caller.
     """
 
     def __init__(self, ui, opener, root):
@@ -1295,6 +1283,10 @@
     def addfile(self, f, state, mode, size, mtime):
         """Add a tracked file to the dirstate."""
         self._map[f] = dirstatetuple(state, mode, size, mtime)
+        if state != 'n' or mtime == -1:
+            self.nonnormalset.add(f)
+        if size == -2:
+            self.otherparentset.add(f)
 
     def removefile(self, f, size):
         """
@@ -1305,13 +1297,23 @@
         to be more explicit about what that state is.
         """
         self._map[f] = dirstatetuple('r', 0, size, 0)
+        self.nonnormalset.add(f)
 
     def dropfile(self, f):
         """
         Remove a file from the dirstate.  Returns True if the file was
         previously recorded.
         """
-        return self._map.pop(f, None) is not None
+        exists = self._map.pop(f, None) is not None
+        self.nonnormalset.discard(f)
+        return exists
+
+    def clearambiguoustimes(self, files, now):
+        for f in files:
+            e = self.get(f)
+            if e is not None and e[0] == 'n' and e[3] == now:
+                self._map[f] = dirstatetuple(e[0], e[1], e[2], -1)
+                self.nonnormalset.add(f)
 
     def nonnormalentries(self):
         '''Compute the nonnormal dirstate entries from the dmap'''