diff mercurial/revset.py @ 46113:59fa3890d40a

node: import symbols explicitly

There is no point in lazy importing mercurial.node, it is used all over
the place anyway. So consistently import the used symbols directly.
Fix one file using symbols indirectly via mercurial.revlog.

Differential Revision: https://phab.mercurial-scm.org/D9480

--- a/mercurial/revset.py	Sun Dec 13 18:29:22 2020 -0800
+++ b/mercurial/revset.py	Tue Dec 01 21:54:46 2020 +0100
@@ -11,6 +11,11 @@
 
 from .i18n import _
 from .pycompat import getattr
+from .node import (
+    bin,
+    nullrev,
+    wdirrev,
+)
 from . import (
     dagop,
     destutil,
@@ -20,7 +25,6 @@
     grep as grepmod,
     hbisect,
     match as matchmod,
-    node,
     obsolete as obsmod,
     obsutil,
     pathutil,
@@ -55,7 +59,7 @@
 fullreposet = smartset.fullreposet
 
 # revisions not included in all(), but populated if specified
-_virtualrevs = (node.nullrev, node.wdirrev)
+_virtualrevs = (nullrev, wdirrev)
 
 # Constants for ordering requirement, used in getset():
 #
@@ -177,9 +181,9 @@
 def _makerangeset(repo, subset, m, n, order):
     if m == n:
         r = baseset([m])
-    elif n == node.wdirrev:
+    elif n == wdirrev:
         r = spanset(repo, m, len(repo)) + baseset([n])
-    elif m == node.wdirrev:
+    elif m == wdirrev:
         r = baseset([m]) + spanset(repo, repo.changelog.tiprev(), n - 1)
     elif m < n:
         r = spanset(repo, m, n + 1)
@@ -597,7 +601,7 @@
                 bms.add(repo[bmrev].rev())
     else:
         bms = {repo[r].rev() for r in repo._bookmarks.values()}
-    bms -= {node.nullrev}
+    bms -= {nullrev}
     return subset & bms
 
 
@@ -722,7 +726,6 @@
     cs = set()
     pr = repo.changelog.parentrevs
     minrev = parentset.min()
-    nullrev = node.nullrev
     for r in subset:
         if r <= minrev:
             continue
@@ -1396,7 +1399,7 @@
                     b'_matchfiles expected at most one revision'
                 )
             if value == b'':  # empty means working directory
-                rev = node.wdirrev
+                rev = wdirrev
             else:
                 rev = value
         elif prefix == b'd:':
@@ -1416,7 +1419,6 @@
     # This directly read the changelog data as creating changectx for all
     # revisions is quite expensive.
     getfiles = repo.changelog.readfiles
-    wdirrev = node.wdirrev
 
     def matches(x):
         if x == wdirrev:
@@ -1490,15 +1492,15 @@
         order = followorder
     inputset = getset(repo, fullreposet(repo), x, order=order)
     wdirparents = None
-    if node.wdirrev in inputset:
+    if wdirrev in inputset:
         # a bit slower, but not common so good enough for now
         wdirparents = [p.rev() for p in repo[None].parents()]
         inputset = set(inputset)
-        inputset.discard(node.wdirrev)
+        inputset.discard(wdirrev)
     heads = repo.changelog.headrevs(inputset)
     if wdirparents is not None:
         heads.difference_update(wdirparents)
-        heads.add(node.wdirrev)
+        heads.add(wdirrev)
     heads = baseset(heads)
     return subset & heads
 
@@ -1598,7 +1600,6 @@
     # i18n: "merge" is a keyword
     getargs(x, 0, 0, _(b"merge takes no arguments"))
     cl = repo.changelog
-    nullrev = node.nullrev
 
     def ismerge(r):
         try:
@@ -1692,7 +1693,7 @@
             if name not in ns.deprecated:
                 names.update(repo[n].rev() for n in ns.nodes(repo, name))
 
-    names -= {node.nullrev}
+    names -= {nullrev}
     return subset & names
 
 
@@ -1705,9 +1706,9 @@
     n = getstring(l[0], _(b"id requires a string"))
     if len(n) == 40:
         try:
-            rn = repo.changelog.rev(node.bin(n))
+            rn = repo.changelog.rev(bin(n))
         except error.WdirUnsupported:
-            rn = node.wdirrev
+            rn = wdirrev
         except (LookupError, TypeError):
             rn = None
     else:
@@ -1719,7 +1720,7 @@
         except LookupError:
             pass
         except error.WdirUnsupported:
-            rn = node.wdirrev
+            rn = wdirrev
 
     if rn is None:
         return baseset()
@@ -1864,7 +1865,7 @@
             ps.add(cl.parentrevs(r)[0])
         except error.WdirUnsupported:
             ps.add(repo[r].p1().rev())
-    ps -= {node.nullrev}
+    ps -= {nullrev}
     # XXX we should turn this into a baseset instead of a set, smartset may do
     # some optimizations from the fact this is a baseset.
     return subset & ps
@@ -1892,7 +1893,7 @@
             parents = repo[r].parents()
             if len(parents) == 2:
                 ps.add(parents[1])
-    ps -= {node.nullrev}
+    ps -= {nullrev}
     # XXX we should turn this into a baseset instead of a set, smartset may do
     # some optimizations from the fact this is a baseset.
     return subset & ps
@@ -1919,7 +1920,7 @@
                 up(parentrevs(r))
             except error.WdirUnsupported:
                 up(p.rev() for p in repo[r].parents())
-    ps -= {node.nullrev}
+    ps -= {nullrev}
     return subset & ps
 
 
@@ -1994,7 +1995,7 @@
         else:
             try:
                 parents = cl.parentrevs(r)
-                if parents[1] != node.nullrev:
+                if parents[1] != nullrev:
                     ps.add(parents[1])
             except error.WdirUnsupported:
                 parents = repo[r].parents()
@@ -2567,8 +2568,8 @@
     """Working directory. (EXPERIMENTAL)"""
     # i18n: "wdir" is a keyword
     getargs(x, 0, 0, _(b"wdir takes no arguments"))
-    if node.wdirrev in subset or isinstance(subset, fullreposet):
-        return baseset([node.wdirrev])
+    if wdirrev in subset or isinstance(subset, fullreposet):
+        return baseset([wdirrev])
     return baseset()
 
 
@@ -2638,7 +2639,7 @@
     if not s:
         return baseset()
     cl = repo.changelog
-    ls = [cl.rev(node.bin(r)) for r in s.split(b'\0')]
+    ls = [cl.rev(bin(r)) for r in s.split(b'\0')]
     s = subset
     return baseset([r for r in ls if r in s])