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util: make capacity a public attribute on lrucachedict
authorGregory Szorc <gregory.szorc@gmail.com>
Thu, 06 Sep 2018 11:37:27 -0700
changeset 39564 5d75a3c16193
parent 39563 b31b01f93b11
child 39565 2dcc68c7d25b
util: make capacity a public attribute on lrucachedict So others can query it. Useful for operations that may want to verify the cache has capacity for N items before it performs an operation that may cause cache eviction. Differential Revision: https://phab.mercurial-scm.org/D4499
mercurial/util.py file | annotate | diff | comparison | revisions
tests/test-lrucachedict.py file | annotate | diff | comparison | revisions 
--- a/mercurial/util.py	Thu Sep 06 11:33:40 2018 -0700
+++ b/mercurial/util.py	Thu Sep 06 11:37:27 2018 -0700
@@ -1241,7 +1241,7 @@
         head.prev = head
         head.next = head
         self._size = 1
-        self._capacity = max
+        self.capacity = max
 
     def __len__(self):
         return len(self._cache)
@@ -1269,7 +1269,7 @@
             self._movetohead(node)
             return
 
-        if self._size < self._capacity:
+        if self._size < self.capacity:
             node = self._addcapacity()
         else:
             # Grab the last/oldest item.
@@ -1312,7 +1312,7 @@
         self._cache.clear()
 
     def copy(self):
-        result = lrucachedict(self._capacity)
+        result = lrucachedict(self.capacity)
 
         # We copy entries by iterating in oldest-to-newest order so the copy
         # has the correct ordering.
--- a/tests/test-lrucachedict.py	Thu Sep 06 11:33:40 2018 -0700
+++ b/tests/test-lrucachedict.py	Thu Sep 06 11:37:27 2018 -0700
@@ -11,6 +11,7 @@
 class testlrucachedict(unittest.TestCase):
     def testsimple(self):
         d = util.lrucachedict(4)
+        self.assertEqual(d.capacity, 4)
         d['a'] = 'va'
         d['b'] = 'vb'
         d['c'] = 'vc'
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