templater: extract type conversion from evalfuncarg()
Needed by the subsequent patches.
--- a/mercurial/templateutil.py Fri Mar 23 20:23:55 2018 +0900
+++ b/mercurial/templateutil.py Fri Mar 23 21:03:21 2018 +0900
@@ -287,7 +287,12 @@
def evalfuncarg(context, mapping, arg):
"""Evaluate given argument as value type"""
- thing = evalrawexp(context, mapping, arg)
+ return _unwrapvalue(evalrawexp(context, mapping, arg))
+
+# TODO: unify this with unwrapvalue() once the bug of templatefunc.join()
+# is fixed. we can't do that right now because join() has to take a generator
+# of byte strings as it is, not a lazy byte string.
+def _unwrapvalue(thing):
thing = unwrapvalue(thing)
# evalrawexp() may return string, generator of strings or arbitrary object
# such as date tuple, but filter does not want generator.