templatekw: add default implementation of _hybrid.gen
This is convenient for new template keyword, which doesn't need to support
the legacy list hack (provided by _showlist()), but still wants to have
a string representation.
--- a/mercurial/templatekw.py Sun Apr 09 11:58:27 2017 +0900
+++ b/mercurial/templatekw.py Wed Apr 12 21:10:47 2017 +0900
@@ -32,10 +32,20 @@
"""
def __init__(self, gen, values, makemap, joinfmt):
- self.gen = gen
+ if gen is not None:
+ self.gen = gen
self._values = values
self._makemap = makemap
self.joinfmt = joinfmt
+ @util.propertycache
+ def gen(self):
+ return self._defaultgen()
+ def _defaultgen(self):
+ """Generator to stringify this as {join(self, ' ')}"""
+ for i, d in enumerate(self.itermaps()):
+ if i > 0:
+ yield ' '
+ yield self.joinfmt(d)
def itermaps(self):
makemap = self._makemap
for x in self._values: