[PATCH 3 of 7] context: add a markerctx context

[Pierre-Yves David]

# HG changeset patch
# User Pierre-Yves.David at ens-lyon.org
# Date 1337008999 -7200
# Node ID f895c60ac3e0de611419c1c2c7c5a56e6157e3c4
# Parent  5f8d61f6111dd069abf4eb7aef0a51aca4c9ece9
context: add a markerctx context

Add associated method on local repository.

diff -r 5f8d61f6111d -r f895c60ac3e0 mercurial/context.py
--- a/mercurial/context.py	Mon May 14 17:06:34 2012 +0200
+++ b/mercurial/context.py	Mon May 14 17:23:19 2012 +0200
@@ -8,7 +8,7 @@
 from node import nullid, nullrev, short, hex, bin
 from i18n import _
 import ancestor, mdiff, error, util, scmutil, subrepo, patch, encoding, phases
-import copies
+import copies, obsolete
 import match as matchmod
 import os, errno, stat
 
@@ -1273,3 +1273,30 @@
         return 'l' in self._flags
     def renamed(self):
         return self._copied
+
+class markerctx(object):
+    """markerctx represent an obsolete marker """
+
+    def __init__(self, repo, data):
+        self._repo = repo
+        self._data = data
+        self._decodedmeta = None
+
+    def obsnode(self):
+        """node-id of the changeset obsoleted by this marker (as single string)"""
+        return self._data[0]
+
+    def replnodes(self):
+        """node-id of replacement in this marker (as a list)"""
+        return self._data[1]
+
+    def metadata(self):
+        """decoded version of a marker metadata"""
+        if self._decodedmeta is None:
+            self._decodedmeta = obsolete.decodemeta(self._data[3])
+        return self._decodedmeta
+
+    def date(self):
+        """marker creation date (float, int)"""
+        parts = self.metadata()['date'].split(' ')
+        return (float(parts[0]), int(parts[1]))
diff -r 5f8d61f6111d -r f895c60ac3e0 mercurial/localrepo.py
--- a/mercurial/localrepo.py	Mon May 14 17:06:34 2012 +0200
+++ b/mercurial/localrepo.py	Mon May 14 17:23:19 2012 +0200
@@ -254,6 +254,11 @@
         for i in xrange(len(self)):
             yield i
 
+    def markers(self):
+        """all obsolete markers known in this repository"""
+        for marker in self.obsstore._all:
+            yield context.markerctx(self, marker)
+
     def revs(self, expr, *args):
         '''Return a list of revisions matching the given revset'''
         expr = revset.formatspec(expr, *args)