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python3 compatibility: funcattrs, methodattrs

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the introspection names changed a lot in python3, so lets have two
implementations used by respective runtime
This commit is contained in:
Michal Vyskocil 2013-04-09 11:30:03 +02:00 committed by Adrian Schröter
parent 600a565428
commit a134074417
1 changed files with 31 additions and 12 deletions
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43
osc/cmdln.py
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@ -42,10 +42,37 @@ import os
import re
import cmd
import optparse
import sys
from pprint import pprint
from datetime import date
# this is python 2.x style
def introspect_handler_2(handler):
# Extract the introspection bits we need.
func = handler.im_func
if func.func_defaults:
func_defaults = func.func_defaults
else:
func_defaults = []
return \
func_defaults, \
func.func_code.co_argcount, \
func.func_code.co_varnames, \
func.func_code.co_flags, \
func
def introspect_handler_3(handler):
return \
list(handler.__defaults__), \
handler.__code__.co_argcount, \
handler.__code__.co_varnames, \
handler.__code__.co_flags, \
handler.__func__
if sys.version_info[0] == 2:
introspect_handler = introspect_handler_2
else:
introspect_handler = introspect_handler_3
#---- globals
@ -806,15 +833,7 @@ class RawCmdln(cmd.Cmd):
indent, indent_width = _get_indent(marker, help)
suffix = _get_trailing_whitespace(marker, help)
# Extract the introspection bits we need.
func = handler.im_func
if func.func_defaults:
func_defaults = list(func.func_defaults)
else:
func_defaults = []
co_argcount = func.func_code.co_argcount
co_varnames = func.func_code.co_varnames
co_flags = func.func_code.co_flags
func_defaults, co_argcount, co_varnames, co_flags, _ = introspect_handler(handler)
CO_FLAGS_ARGS = 4
CO_FLAGS_KWARGS = 8
@ -839,7 +858,7 @@ class RawCmdln(cmd.Cmd):
warnings.warn("argument '**%s' on '%s.%s' command "
"handler will never get values"
% (name, self.__class__.__name__,
func.func_name))
getattr(func, "__name__", getattr(func, "func_name"))))
if co_flags & CO_FLAGS_ARGS:
name = argnames.pop(-1)
tail = "[%s...]" % name.upper()
@ -1155,14 +1174,14 @@ class Cmdln(RawCmdln):
and an appropriate error message will be raised/printed if the
command is called with a different number of args.
"""
co_argcount = handler.im_func.func_code.co_argcount
co_argcount = introspect_handler(handler)[1]
if co_argcount == 2: # handler ::= do_foo(self, argv)
return handler(argv)
elif co_argcount >= 3: # handler ::= do_foo(self, subcmd, opts, ...)
try:
optparser = handler.optparser
except AttributeError:
optparser = handler.im_func.optparser = SubCmdOptionParser()
optparser = introspect_handler(handler)[4].optparser = SubCmdOptionParser()
assert isinstance(optparser, SubCmdOptionParser)
optparser.set_cmdln_info(self, argv[0])
try: