# HG changeset patch
# User Matt Harbison <matt_harbison@yahoo.com>
# Date 2019-12-16 02:28:30
# Node ID b5655f337bd792e01d444724fe8ef7771530cb01
# Parent  eff050dbb7037e323958a67f7f14effffd9d2ed8

typing: add a couple of assertions to lrucachedict to help pytype

Fixes the following warnings:

    line 1488, in pop: No attribute 'markempty' on None [attribute-error]
         In Optional[Union[Any, _lrucachenode, nothing]]
    line 1578, in popoldest: No attribute 'markempty' on None [attribute-error]
         In Optional[Union[Any, _lrucachenode, nothing]]

Differential Revision: https://phab.mercurial-scm.org/D7674

diff --git a/mercurial/util.py b/mercurial/util.py
--- a/mercurial/util.py
+++ b/mercurial/util.py
@@ -1480,6 +1480,8 @@ class lrucachedict(object):
             if default is _notset:
                 raise
             return default
+
+        assert node is not None  # help pytype
         value = node.value
         self.totalcost -= node.cost
         node.markempty()
@@ -1567,6 +1569,8 @@ class lrucachedict(object):
         while n.key is _notset:
             n = n.prev
 
+        assert n is not None  # help pytype
+
         key, value = n.key, n.value
 
         # And remove it from the cache and mark it as empty.