# HG changeset patch
# User Matt Mackall <mpm@selenic.com>
# Date 1214508950 18000
# Node ID fb42030d79d628a78b9c5f093d918ee3793189cb
# Parent  51b0e799352fa4c2254c9add438c8b72255689ce
add __len__ and __iter__ methods to repo and revlog

diff -r 51b0e799352f -r fb42030d79d6 contrib/dumprevlog
--- a/contrib/dumprevlog	Thu Jun 26 14:35:50 2008 -0500
+++ b/contrib/dumprevlog	Thu Jun 26 14:35:50 2008 -0500
@@ -12,7 +12,7 @@
     binopen = lambda fn: open(fn, 'rb')
     r = revlog.revlog(binopen, f)
     print "file:", f
-    for i in xrange(r.count()):
+    for i in r:
         n = r.node(i)
         p = r.parents(n)
         d = r.revision(n)
diff -r 51b0e799352f -r fb42030d79d6 hgext/acl.py
--- a/hgext/acl.py	Thu Jun 26 14:35:50 2008 -0500
+++ b/hgext/acl.py	Thu Jun 26 14:35:50 2008 -0500
@@ -118,7 +118,5 @@
         ui.debug(_('acl: changes have source "%s" - skipping\n') % source)
         return
 
-    start = repo.changelog.rev(bin(node))
-    end = repo.changelog.count()
-    for rev in xrange(start, end):
+    for rev in xrange(repo[node].rev(), len(repo)):
         c.check(repo.changelog.node(rev))
diff -r 51b0e799352f -r fb42030d79d6 hgext/churn.py
--- a/hgext/churn.py	Thu Jun 26 14:35:50 2008 -0500
+++ b/hgext/churn.py	Thu Jun 26 14:35:50 2008 -0500
@@ -91,7 +91,7 @@
     cl    = repo.changelog
 
     if not revs:
-        revs = range(0, cl.count())
+        revs = range(len(cl))
 
     nr_revs = len(revs)
     cur_rev = 0
diff -r 51b0e799352f -r fb42030d79d6 hgext/graphlog.py
--- a/hgext/graphlog.py	Thu Jun 26 14:35:50 2008 -0500
+++ b/hgext/graphlog.py	Thu Jun 26 14:35:50 2008 -0500
@@ -89,7 +89,7 @@
     assert start_rev >= stop_rev
     curr_rev = start_rev
     revs = []
-    filerev = repo.file(path).count() - 1
+    filerev = len(repo.file(path)) - 1
     while filerev >= 0:
         fctx = repo.filectx(path, fileid=filerev)
 
@@ -198,7 +198,7 @@
         revs = revrange(repo, rev_opt)
         return (max(revs), min(revs))
     else:
-        return (repo.changelog.count() - 1, 0)
+        return (len(repo) - 1, 0)
 
 def graphlog(ui, repo, path=None, **opts):
     """show revision history alongside an ASCII revision graph
diff -r 51b0e799352f -r fb42030d79d6 hgext/hgk.py
--- a/hgext/hgk.py	Thu Jun 26 14:35:50 2008 -0500
+++ b/hgext/hgk.py	Thu Jun 26 14:35:50 2008 -0500
@@ -175,7 +175,7 @@
 # you can specify a commit to stop at by starting the sha1 with ^
 def revtree(ui, args, repo, full="tree", maxnr=0, parents=False):
     def chlogwalk():
-        count = repo.changelog.count()
+        count = len(repo)
         i = count
         l = [0] * 100
         chunk = 100
diff -r 51b0e799352f -r fb42030d79d6 hgext/keyword.py
--- a/hgext/keyword.py	Thu Jun 26 14:35:50 2008 -0500
+++ b/hgext/keyword.py	Thu Jun 26 14:35:50 2008 -0500
@@ -178,6 +178,7 @@
             notify = self.ui.debug
         else:                    # kwexpand/kwshrink
             ctx = self.repo['.']
+            mf = ctx.manifest()
             notify = self.ui.note
         candidates = [f for f in files if self.iskwfile(f, ctx.flags)]
         if candidates:
diff -r 51b0e799352f -r fb42030d79d6 hgext/mq.py
--- a/hgext/mq.py	Thu Jun 26 14:35:50 2008 -0500
+++ b/hgext/mq.py	Thu Jun 26 14:35:50 2008 -0500
@@ -2319,7 +2319,7 @@
             # we might as well use it, but we won't save it.
 
             # update the cache up to the tip
-            self._updatebranchcache(partial, start, cl.count())
+            self._updatebranchcache(partial, start, len(cl))
 
             return partial
 
diff -r 51b0e799352f -r fb42030d79d6 hgext/notify.py
--- a/hgext/notify.py	Thu Jun 26 14:35:50 2008 -0500
+++ b/hgext/notify.py	Thu Jun 26 14:35:50 2008 -0500
@@ -269,11 +269,11 @@
     node = bin(node)
     ui.pushbuffer()
     if hooktype == 'changegroup':
-        start = repo.changelog.rev(node)
-        end = repo.changelog.count()
+        start = repo[node].rev()
+        end = len(repo)
         count = end - start
         for rev in xrange(start, end):
-            n.node(repo.changelog.node(rev))
+            n.node(repo[node].rev())
         n.diff(node, repo.changelog.tip())
     else:
         count = 1
diff -r 51b0e799352f -r fb42030d79d6 hgext/win32text.py
--- a/hgext/win32text.py	Thu Jun 26 14:35:50 2008 -0500
+++ b/hgext/win32text.py	Thu Jun 26 14:35:50 2008 -0500
@@ -98,7 +98,7 @@
 
 def forbidnewline(ui, repo, hooktype, node, newline, **kwargs):
     halt = False
-    for rev in xrange(repo.changelog.rev(bin(node)), repo.changelog.count()):
+    for rev in xrange(repo[node].rev(), len(repo)):
         c = repo[rev]
         for f in c.files():
             if f not in c:
diff -r 51b0e799352f -r fb42030d79d6 mercurial/bundlerepo.py
--- a/mercurial/bundlerepo.py	Thu Jun 26 14:35:50 2008 -0500
+++ b/mercurial/bundlerepo.py	Thu Jun 26 14:35:50 2008 -0500
@@ -34,7 +34,7 @@
             for chunk in changegroup.chunkiter(bundlefile):
                 pos = bundlefile.tell()
                 yield chunk, pos - len(chunk)
-        n = self.count()
+        n = len(self)
         prev = None
         for chunk, start in chunkpositer():
             size = len(chunk)
diff -r 51b0e799352f -r fb42030d79d6 mercurial/changelog.py
--- a/mercurial/changelog.py	Thu Jun 26 14:35:50 2008 -0500
+++ b/mercurial/changelog.py	Thu Jun 26 14:35:50 2008 -0500
@@ -82,7 +82,7 @@
         "delay visibility of index updates to other readers"
         self._realopener = self.opener
         self.opener = self._delayopener
-        self._delaycount = self.count()
+        self._delaycount = len(self)
         self._delaybuf = []
         self._delayname = None
 
@@ -108,7 +108,7 @@
         # if we're doing an initial clone, divert to another file
         if self._delaycount == 0:
             self._delayname = fp.name
-            if not self.count():
+            if not len(self):
                 # make sure to truncate the file
                 mode = mode.replace('a', 'w')
             return self._realopener(name + ".a", mode)
@@ -192,4 +192,4 @@
         list.sort()
         l = [hex(manifest), user, parseddate] + list + ["", desc]
         text = "\n".join(l)
-        return self.addrevision(text, transaction, self.count(), p1, p2)
+        return self.addrevision(text, transaction, len(self), p1, p2)
diff -r 51b0e799352f -r fb42030d79d6 mercurial/cmdutil.py
--- a/mercurial/cmdutil.py	Thu Jun 26 14:35:50 2008 -0500
+++ b/mercurial/cmdutil.py	Thu Jun 26 14:35:50 2008 -0500
@@ -126,7 +126,7 @@
         if revrangesep in revs[0]:
             start, end = revs[0].split(revrangesep, 1)
             start = revfix(repo, start, 0)
-            end = revfix(repo, end, repo.changelog.count() - 1)
+            end = revfix(repo, end, len(repo) - 1)
         else:
             start = revfix(repo, revs[0], None)
     elif len(revs) == 2:
@@ -151,7 +151,7 @@
         if revrangesep in spec:
             start, end = spec.split(revrangesep, 1)
             start = revfix(repo, start, 0)
-            end = revfix(repo, end, repo.changelog.count() - 1)
+            end = revfix(repo, end, len(repo) - 1)
             step = start > end and -1 or 1
             for rev in xrange(start, end+step, step):
                 if rev in seen:
@@ -988,7 +988,7 @@
     m = match(repo, pats, opts)
     follow = opts.get('follow') or opts.get('follow_first')
 
-    if repo.changelog.count() == 0:
+    if not len(repo):
         return [], m
 
     if follow:
@@ -1007,9 +1007,9 @@
     if not slowpath:
         # Only files, no patterns.  Check the history of each file.
         def filerevgen(filelog, node):
-            cl_count = repo.changelog.count()
+            cl_count = len(repo)
             if node is None:
-                last = filelog.count() - 1
+                last = len(filelog) - 1
             else:
                 last = filelog.rev(node)
             for i, window in increasing_windows(last, nullrev):
@@ -1032,7 +1032,7 @@
         minrev, maxrev = min(revs), max(revs)
         for file_, node in iterfiles():
             filelog = repo.file(file_)
-            if filelog.count() == 0:
+            if not len(filelog):
                 if node is None:
                     # A zero count may be a directory or deleted file, so
                     # try to find matching entries on the slow path.
@@ -1058,8 +1058,7 @@
 
         # The slow path checks files modified in every changeset.
         def changerevgen():
-            for i, window in increasing_windows(repo.changelog.count()-1,
-                                                nullrev):
+            for i, window in increasing_windows(len(repo) - 1, nullrev):
                 for j in xrange(i - window, i + 1):
                     yield j, change(j)[3]
 
diff -r 51b0e799352f -r fb42030d79d6 mercurial/commands.py
--- a/mercurial/commands.py	Thu Jun 26 14:35:50 2008 -0500
+++ b/mercurial/commands.py	Thu Jun 26 14:35:50 2008 -0500
@@ -773,7 +773,7 @@
     r = revlog.revlog(util.opener(os.getcwd(), audit=False), file_)
     ui.write("   rev    offset  length   base linkrev" +
              " nodeid       p1           p2\n")
-    for i in xrange(r.count()):
+    for i in r:
         node = r.node(i)
         try:
             pp = r.parents(node)
@@ -787,7 +787,7 @@
     """dump an index DAG as a .dot file"""
     r = revlog.revlog(util.opener(os.getcwd(), audit=False), file_)
     ui.write("digraph G {\n")
-    for i in xrange(r.count()):
+    for i in r:
         node = r.node(i)
         pp = r.parents(node)
         ui.write("\t%d -> %d\n" % (r.rev(pp[0]), i))
@@ -1762,7 +1762,7 @@
     if opts['copies'] and opts['rev']:
         endrev = max(cmdutil.revrange(repo, opts['rev'])) + 1
     else:
-        endrev = repo.changelog.count()
+        endrev = len(repo)
     rcache = {}
     ncache = {}
     def getrenamed(fn, rev):
@@ -1774,7 +1774,7 @@
             rcache[fn] = {}
             ncache[fn] = {}
             fl = repo.file(fn)
-            for i in xrange(fl.count()):
+            for i in fl:
                 node = fl.node(i)
                 lr = fl.linkrev(node)
                 renamed = fl.renamed(node)
@@ -2794,7 +2794,7 @@
     that repository becomes the current tip. The "tip" tag is special
     and cannot be renamed or assigned to a different changeset.
     """
-    cmdutil.show_changeset(ui, repo, opts).show(nullrev+repo.changelog.count())
+    cmdutil.show_changeset(ui, repo, opts).show(len(repo) - 1)
 
 def unbundle(ui, repo, fname1, *fnames, **opts):
     """apply one or more changegroup files
diff -r 51b0e799352f -r fb42030d79d6 mercurial/copies.py
--- a/mercurial/copies.py	Thu Jun 26 14:35:50 2008 -0500
+++ b/mercurial/copies.py	Thu Jun 26 14:35:50 2008 -0500
@@ -67,7 +67,7 @@
     #   - quit when interesting revs is zero
 
     cl = repo.changelog
-    working = cl.count() # pseudo rev for the working directory
+    working = len(cl) # pseudo rev for the working directory
     if a is None:
         a = working
     if b is None:
diff -r 51b0e799352f -r fb42030d79d6 mercurial/dirstate.py
--- a/mercurial/dirstate.py	Thu Jun 26 14:35:50 2008 -0500
+++ b/mercurial/dirstate.py	Thu Jun 26 14:35:50 2008 -0500
@@ -384,7 +384,7 @@
     def rebuild(self, parent, files):
         self.clear()
         for f in files:
-            if 'x' in files.flag(f):
+            if 'x' in files.flags(f):
                 self._map[f] = ('n', 0777, -1, 0, 0)
             else:
                 self._map[f] = ('n', 0666, -1, 0, 0)
diff -r 51b0e799352f -r fb42030d79d6 mercurial/hbisect.py
--- a/mercurial/hbisect.py	Thu Jun 26 14:35:50 2008 -0500
+++ b/mercurial/hbisect.py	Thu Jun 26 14:35:50 2008 -0500
@@ -20,12 +20,12 @@
         badrev = min([changelog.rev(n) for n in bad])
         goodrevs = [changelog.rev(n) for n in good]
         # build ancestors array
-        ancestors = [[]] * (changelog.count() + 1) # an extra for [-1]
+        ancestors = [[]] * (len(changelog) + 1) # an extra for [-1]
 
         # clear good revs from array
         for node in goodrevs:
             ancestors[node] = None
-        for rev in xrange(changelog.count(), -1, -1):
+        for rev in xrange(len(changelog), -1, -1):
             if ancestors[rev] is None:
                 for prev in clparents(rev):
                     ancestors[prev] = None
diff -r 51b0e799352f -r fb42030d79d6 mercurial/hgweb/webcommands.py
--- a/mercurial/hgweb/webcommands.py	Thu Jun 26 14:35:50 2008 -0500
+++ b/mercurial/hgweb/webcommands.py	Thu Jun 26 14:35:50 2008 -0500
@@ -110,7 +110,7 @@
         qw = query.lower().split()
 
         def revgen():
-            for i in xrange(cl.count() - 1, 0, -100):
+            for i in xrange(len(cl) - 1, 0, -100):
                 l = []
                 for j in xrange(max(0, i - 100), i + 1):
                     ctx = web.repo[j]
@@ -168,7 +168,7 @@
         if 'rev' in req.form:
             hi = req.form['rev'][0]
         else:
-            hi = web.repo.changelog.count() - 1
+            hi = len(web.repo) - 1
         try:
             ctx = web.repo[hi]
         except RepoError:
@@ -205,7 +205,7 @@
 
     maxchanges = shortlog and web.maxshortchanges or web.maxchanges
     cl = web.repo.changelog
-    count = cl.count()
+    count = len(cl)
     pos = ctx.rev()
     start = max(0, pos - maxchanges + 1)
     end = min(count, start + maxchanges)
@@ -409,7 +409,7 @@
         yield l
 
     cl = web.repo.changelog
-    count = cl.count()
+    count = len(cl)
     start = max(0, count - web.maxchanges)
     end = min(count, start + web.maxchanges)
 
@@ -498,7 +498,7 @@
     fctx = webutil.filectx(web.repo, req)
     f = fctx.path()
     fl = fctx.filelog()
-    count = fl.count()
+    count = len(fl)
     pagelen = web.maxshortchanges
     pos = fctx.filerev()
     start = max(0, pos - pagelen + 1)
@@ -579,7 +579,7 @@
     rev = webutil.changectx(web.repo, req).rev()
     bg_height = 39
 
-    max_rev = web.repo.changelog.count() - 1
+    max_rev = len(web.repo) - 1
     revcount = min(max_rev, int(req.form.get('revcount', [25])[0]))
     revnode = web.repo.changelog.node(rev)
     revnode_hex = hex(revnode)
@@ -588,7 +588,7 @@
     lessrev = max(0, rev - revcount / 2)
 
     maxchanges = web.maxshortchanges or web.maxchanges
-    count = web.repo.changelog.count()
+    count = len(web.repo)
     changenav = webutil.revnavgen(rev, maxchanges, count, web.repo.changectx)
 
     tree = list(graphmod.graph(web.repo, rev, rev - revcount))
diff -r 51b0e799352f -r fb42030d79d6 mercurial/hgweb/webutil.py
--- a/mercurial/hgweb/webutil.py	Thu Jun 26 14:35:50 2008 -0500
+++ b/mercurial/hgweb/webutil.py	Thu Jun 26 14:35:50 2008 -0500
@@ -112,12 +112,11 @@
     return util.canonpath(repo.root, '', path)
 
 def changectx(repo, req):
+    changeid = "tip"
     if 'node' in req.form:
         changeid = req.form['node'][0]
     elif 'manifest' in req.form:
         changeid = req.form['manifest'][0]
-    else:
-        changeid = repo.changelog.count() - 1
 
     try:
         ctx = repo[changeid]
diff -r 51b0e799352f -r fb42030d79d6 mercurial/localrepo.py
--- a/mercurial/localrepo.py	Thu Jun 26 14:35:50 2008 -0500
+++ b/mercurial/localrepo.py	Thu Jun 26 14:35:50 2008 -0500
@@ -122,6 +122,16 @@
             return context.workingctx(self)
         return context.changectx(self, changeid)
 
+    def __nonzero__(self):
+        return True
+
+    def __len__(self):
+        return len(self.changelog)
+
+    def __iter__(self):
+        for i in xrange(len(self)):
+            yield i
+
     def url(self):
         return 'file:' + self.root
 
@@ -368,7 +378,7 @@
         return self.nodetagscache.get(node, [])
 
     def _branchtags(self, partial, lrev):
-        tiprev = self.changelog.count() - 1
+        tiprev = len(self) - 1
         if lrev != tiprev:
             self._updatebranchcache(partial, lrev+1, tiprev+1)
             self._writebranchcache(partial, self.changelog.tip(), tiprev)
@@ -413,8 +423,7 @@
         try:
             last, lrev = lines.pop(0).split(" ", 1)
             last, lrev = bin(last), int(lrev)
-            if not (lrev < self.changelog.count() and
-                    self.changelog.node(lrev) == last): # sanity check
+            if lrev >= len(self) or self[lrev].node() != last:
                 # invalidate the cache
                 raise ValueError('invalidating branch cache (tip differs)')
             for l in lines:
@@ -834,7 +843,7 @@
             # check in files
             new = {}
             changed = []
-            linkrev = self.changelog.count()
+            linkrev = len(self)
             commit.sort()
             for f in commit:
                 self.ui.note(f + "\n")
@@ -1638,7 +1647,7 @@
         # Nor do we know which filenodes are missing.
         msng_filenode_set = {}
 
-        junk = mnfst.index[mnfst.count() - 1] # Get around a bug in lazyindex
+        junk = mnfst.index[len(mnfst) - 1] # Get around a bug in lazyindex
         junk = None
 
         # A changeset always belongs to itself, so the changenode lookup
@@ -1838,7 +1847,7 @@
             # Go through all our files in order sorted by name.
             for fname in changedfiles:
                 filerevlog = self.file(fname)
-                if filerevlog.count() == 0:
+                if not len(filerevlog):
                     raise util.Abort(_("empty or missing revlog for %s") % fname)
                 # Toss out the filenodes that the recipient isn't really
                 # missing.
@@ -1889,10 +1898,10 @@
         def identity(x):
             return x
 
-        def gennodelst(revlog):
-            for r in xrange(0, revlog.count()):
-                n = revlog.node(r)
-                if revlog.linkrev(n) in revset:
+        def gennodelst(log):
+            for r in log:
+                n = log.node(r)
+                if log.linkrev(n) in revset:
                     yield n
 
         def changed_file_collector(changedfileset):
@@ -1924,7 +1933,7 @@
 
             for fname in changedfiles:
                 filerevlog = self.file(fname)
-                if filerevlog.count() == 0:
+                if not len(filerevlog):
                     raise util.Abort(_("empty or missing revlog for %s") % fname)
                 nodeiter = gennodelst(filerevlog)
                 nodeiter = list(nodeiter)
@@ -1953,7 +1962,7 @@
         """
         def csmap(x):
             self.ui.debug(_("add changeset %s\n") % short(x))
-            return cl.count()
+            return len(cl)
 
         def revmap(x):
             return cl.rev(x)
@@ -1976,11 +1985,11 @@
             trp = weakref.proxy(tr)
             # pull off the changeset group
             self.ui.status(_("adding changesets\n"))
-            cor = cl.count() - 1
+            cor = len(cl) - 1
             chunkiter = changegroup.chunkiter(source)
             if cl.addgroup(chunkiter, csmap, trp) is None and not emptyok:
                 raise util.Abort(_("received changelog group is empty"))
-            cnr = cl.count() - 1
+            cnr = len(cl) - 1
             changesets = cnr - cor
 
             # pull off the manifest group
@@ -2000,11 +2009,11 @@
                     break
                 self.ui.debug(_("adding %s revisions\n") % f)
                 fl = self.file(f)
-                o = fl.count()
+                o = len(fl)
                 chunkiter = changegroup.chunkiter(source)
                 if fl.addgroup(chunkiter, revmap, trp) is None:
                     raise util.Abort(_("received file revlog group is empty"))
-                revisions += fl.count() - o
+                revisions += len(fl) - o
                 files += 1
 
             # make changelog see real files again
diff -r 51b0e799352f -r fb42030d79d6 mercurial/repair.py
--- a/mercurial/repair.py	Thu Jun 26 14:35:50 2008 -0500
+++ b/mercurial/repair.py	Thu Jun 26 14:35:50 2008 -0500
@@ -23,7 +23,7 @@
     """find out the filelogs affected by the strip"""
     files = {}
 
-    for x in xrange(striprev, repo.changelog.count()):
+    for x in xrange(striprev, len(repo)):
         for name in repo[x].files():
             if name in files:
                 continue
@@ -37,7 +37,7 @@
     """return the nodes that have to be saved before the strip"""
     def collectone(revlog):
         extra = []
-        startrev = count = revlog.count()
+        startrev = count = len(revlog)
         # find the truncation point of the revlog
         for i in xrange(0, count):
             node = revlog.node(i)
@@ -84,7 +84,7 @@
     tostrip = {striprev: 1}
     saveheads = {}
     savebases = []
-    for r in xrange(striprev + 1, cl.count()):
+    for r in xrange(striprev + 1, len(cl)):
         parents = cl.parentrevs(r)
         if parents[0] in tostrip or parents[1] in tostrip:
             # r is a descendant of striprev
diff -r 51b0e799352f -r fb42030d79d6 mercurial/revlog.py
--- a/mercurial/revlog.py	Thu Jun 26 14:35:50 2008 -0500
+++ b/mercurial/revlog.py	Thu Jun 26 14:35:50 2008 -0500
@@ -515,9 +515,11 @@
 
     def tip(self):
         return self.node(len(self.index) - 2)
-    def count(self):
+    def __len__(self):
         return len(self.index) - 1
-
+    def __iter__(self):
+        for i in xrange(len(self)):
+            yield i
     def rev(self, node):
         try:
             return self.nodemap[node]
@@ -620,12 +622,11 @@
             lowestrev = nullrev
         if (lowestrev == nullrev) and (heads is None):
             # We want _all_ the nodes!
-            return ([self.node(r) for r in xrange(0, self.count())],
-                    [nullid], list(self.heads()))
+            return ([self.node(r) for r in self], [nullid], list(self.heads()))
         if heads is None:
             # All nodes are ancestors, so the latest ancestor is the last
             # node.
-            highestrev = self.count() - 1
+            highestrev = len(self) - 1
             # Set ancestors to None to signal that every node is an ancestor.
             ancestors = None
             # Set heads to an empty dictionary for later discovery of heads
@@ -754,15 +755,15 @@
         as if they had no children
         """
         if start is None and stop is None:
-            count = self.count()
+            count = len(self)
             if not count:
                 return [nullid]
             ishead = [1] * (count + 1)
             index = self.index
-            for r in xrange(count):
+            for r in self:
                 e = index[r]
                 ishead[e[5]] = ishead[e[6]] = 0
-            return [self.node(r) for r in xrange(count) if ishead[r]]
+            return [self.node(r) for r in self if ishead[r]]
 
         if start is None:
             start = nullid
@@ -774,7 +775,7 @@
         heads = {startrev: 1}
 
         parentrevs = self.parentrevs
-        for r in xrange(startrev + 1, self.count()):
+        for r in xrange(startrev + 1, len(self)):
             for p in parentrevs(r):
                 if p in reachable:
                     if r not in stoprevs:
@@ -789,7 +790,7 @@
         """find the children of a given node"""
         c = []
         p = self.rev(node)
-        for r in range(p + 1, self.count()):
+        for r in range(p + 1, len(self)):
             prevs = [pr for pr in self.parentrevs(r) if pr != nullrev]
             if prevs:
                 for pr in prevs:
@@ -818,8 +819,8 @@
             if str(rev) != id:
                 raise ValueError
             if rev < 0:
-                rev = self.count() + rev
-            if rev < 0 or rev >= self.count():
+                rev = len(self) + rev
+            if rev < 0 or rev >= len(self):
                 raise ValueError
             return self.node(rev)
         except (ValueError, OverflowError):
@@ -982,7 +983,7 @@
         df = self.opener(self.datafile, 'w')
         try:
             calc = self._io.size
-            for r in xrange(self.count()):
+            for r in self:
                 start = self.start(r) + (r + 1) * calc
                 length = self.length(r)
                 fp.seek(start)
@@ -995,7 +996,7 @@
         fp = self.opener(self.indexfile, 'w', atomictemp=True)
         self.version &= ~(REVLOGNGINLINEDATA)
         self._inline = False
-        for i in xrange(self.count()):
+        for i in self:
             e = self._io.packentry(self.index[i], self.node, self.version, i)
             fp.write(e)
 
@@ -1031,7 +1032,7 @@
         if node in self.nodemap:
             return node
 
-        curr = self.count()
+        curr = len(self)
         prev = curr - 1
         base = self.base(prev)
         offset = self.end(prev)
@@ -1146,7 +1147,7 @@
         """
 
         #track the base of the current delta log
-        r = self.count()
+        r = len(self)
         t = r - 1
         node = None
 
@@ -1265,13 +1266,13 @@
         trust that the caller has saved the revisions that shouldn't be
         removed and that it'll readd them after this truncation.
         """
-        if self.count() == 0:
+        if len(self) == 0:
             return
 
         if isinstance(self.index, lazyindex):
             self._loadindexmap()
 
-        for rev in xrange(0, self.count()):
+        for rev in self:
             if self.index[rev][4] >= minlink:
                 break
         else:
@@ -1292,15 +1293,15 @@
         # then reset internal state in memory to forget those revisions
         self._cache = None
         self._chunkcache = None
-        for x in xrange(rev, self.count()):
+        for x in xrange(rev, len(self)):
             del self.nodemap[self.node(x)]
 
         del self.index[rev:-1]
 
     def checksize(self):
         expected = 0
-        if self.count():
-            expected = max(0, self.end(self.count() - 1))
+        if len(self):
+            expected = max(0, self.end(len(self) - 1))
 
         try:
             f = self.opener(self.datafile)
@@ -1321,10 +1322,10 @@
             di = actual - (i * s)
             if self._inline:
                 databytes = 0
-                for r in xrange(self.count()):
+                for r in self:
                     databytes += max(0, self.length(r))
                 dd = 0
-                di = actual - self.count() * s - databytes
+                di = actual - len(self) * s - databytes
         except IOError, inst:
             if inst.errno != errno.ENOENT:
                 raise
diff -r 51b0e799352f -r fb42030d79d6 mercurial/verify.py
--- a/mercurial/verify.py	Thu Jun 26 14:35:50 2008 -0500
+++ b/mercurial/verify.py	Thu Jun 26 14:35:50 2008 -0500
@@ -65,13 +65,13 @@
     havecl = havemf = 1
     seen = {}
     repo.ui.status(_("checking changesets\n"))
-    if repo.changelog.count() == 0 and repo.manifest.count() > 1:
+    if not len(repo) and len(repo.manifest):
         havecl = 0
         err(0, _("empty or missing 00changelog.i"))
     else:
         checksize(repo.changelog, "changelog")
 
-    for i in xrange(repo.changelog.count()):
+    for i in repo:
         changesets += 1
         n = repo.changelog.node(i)
         l = repo.changelog.linkrev(n)
@@ -101,18 +101,18 @@
 
     seen = {}
     repo.ui.status(_("checking manifests\n"))
-    if repo.changelog.count() > 0 and repo.manifest.count() == 0:
+    if len(repo) and not len(repo.manifest):
         havemf = 0
         err(0, _("empty or missing 00manifest.i"))
     else:
         checkversion(repo.manifest, "manifest")
         checksize(repo.manifest, "manifest")
 
-    for i in xrange(repo.manifest.count()):
+    for i in repo.manifest:
         n = repo.manifest.node(i)
         l = repo.manifest.linkrev(n)
 
-        if l < 0 or (havecl and l >= repo.changelog.count()):
+        if l < 0 or (havecl and l >= len(repo)):
             err(None, _("bad link (%d) at manifest revision %d") % (l, i))
 
         if n in neededmanifests:
@@ -182,19 +182,19 @@
         checkversion(fl, f)
         checksize(fl, f)
 
-        if fl.count() == 0:
+        if not len(fl):
             err(filelinkrevs[f][0], _("empty or missing revlog"), f)
             continue
 
         seen = {}
         nodes = {nullid: 1}
-        for i in xrange(fl.count()):
+        for i in fl:
             revisions += 1
             n = fl.node(i)
             flr = fl.linkrev(n)
 
             if flr < 0 or (havecl and flr not in filelinkrevs.get(f, [])):
-                if flr < 0 or flr >= repo.changelog.count():
+                if flr < 0 or flr >= len(repo):
                     err(None, _("rev %d point to nonexistent changeset %d")
                         % (i, flr), f)
                 else:
@@ -245,7 +245,7 @@
                 rp = fl.renamed(n)
                 if rp:
                     fl2 = repo.file(rp[0])
-                    if fl2.count() == 0:
+                    if not len(fl2):
                         err(flr, _("empty or missing copy source revlog %s:%s")
                             % (rp[0], short(rp[1])), f)
                     elif rp[1] == nullid:
diff -r 51b0e799352f -r fb42030d79d6 tests/test-parseindex
--- a/tests/test-parseindex	Thu Jun 26 14:35:50 2008 -0500
+++ b/tests/test-parseindex	Thu Jun 26 14:35:50 2008 -0500
@@ -44,8 +44,8 @@
     return wrapper
 
 cl = changelog.changelog(opener('.hg/store'))
-print cl.count(), 'revisions:'
-for r in xrange(cl.count()):
+print len(cl), 'revisions:'
+for r in cl:
     print short(cl.node(r))
 EOF