changeset 47489:3f13dfa1fa78

dirstate: introduce a symbolic constant for the AMBIGUOUS_TIME marker

This is going to be clearer and easier to track than -1. Ultimately I would
like to get ride of this special value everywhere but in the lower level,
however we need to clarify the API first. This changeset is part of such
clarification.

Differential Revision: https://phab.mercurial-scm.org/D10928

--- a/mercurial/dirstate.py	Thu Jul 01 19:15:22 2021 +0200
+++ b/mercurial/dirstate.py	Thu Jul 01 19:15:30 2021 +0200
@@ -54,6 +54,9 @@
 # a special value used internally for `size` if the file is modified/merged/added
 NONNORMAL = -1
 
+# a special value used internally for `time` if the time is ambigeous
+AMBIGUOUS_TIME = -1
+
 
 class repocache(filecache):
     """filecache for files in .hg/"""
@@ -502,7 +505,7 @@
                     return
                 if entry[0] == b'm' or entry[0] == b'n' and entry[2] == FROM_P2:
                     return
-        self._addpath(f, b'n', 0, NONNORMAL, -1)
+        self._addpath(f, b'n', 0, NONNORMAL, AMBIGUOUS_TIME)
         self._map.copymap.pop(f, None)
 
     def otherparent(self, f):
@@ -512,15 +515,15 @@
             raise error.Abort(msg)
         if f in self and self[f] == b'n':
             # merge-like
-            self._addpath(f, b'm', 0, FROM_P2, -1)
+            self._addpath(f, b'm', 0, FROM_P2, AMBIGUOUS_TIME)
         else:
             # add-like
-            self._addpath(f, b'n', 0, FROM_P2, -1)
+            self._addpath(f, b'n', 0, FROM_P2, AMBIGUOUS_TIME)
         self._map.copymap.pop(f, None)
 
     def add(self, f):
         '''Mark a file added.'''
-        self._addpath(f, b'a', 0, NONNORMAL, -1)
+        self._addpath(f, b'a', 0, NONNORMAL, AMBIGUOUS_TIME)
         self._map.copymap.pop(f, None)
 
     def remove(self, f):
@@ -1537,7 +1540,7 @@
         if oldstate == b"?" and "_alldirs" in self.__dict__:
             self._alldirs.addpath(f)
         self._map[f] = dirstatetuple(state, mode, size, mtime)
-        if state != b'n' or mtime == -1:
+        if state != b'n' or mtime == AMBIGUOUS_TIME:
             self.nonnormalset.add(f)
         if size == FROM_P2:
             self.otherparentset.add(f)
@@ -1581,7 +1584,7 @@
         for f in files:
             e = self.get(f)
             if e is not None and e[0] == b'n' and e[3] == now:
-                self._map[f] = dirstatetuple(e[0], e[1], e[2], -1)
+                self._map[f] = dirstatetuple(e[0], e[1], e[2], AMBIGUOUS_TIME)
                 self.nonnormalset.add(f)
 
     def nonnormalentries(self):
@@ -1592,7 +1595,7 @@
             nonnorm = set()
             otherparent = set()
             for fname, e in pycompat.iteritems(self._map):
-                if e[0] != b'n' or e[3] == -1:
+                if e[0] != b'n' or e[3] == AMBIGUOUS_TIME:
                     nonnorm.add(fname)
                 if e[0] == b'n' and e[2] == FROM_P2:
                     otherparent.add(fname)