mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-11-23 07:19:15 +00:00
235 lines
8.1 KiB
Python
235 lines
8.1 KiB
Python
# Copyright (C) 2004-2011 Free Software Foundation, Inc.
|
|
# Author: Dave Love <fx@gnu.org>
|
|
|
|
# This file is part of GNU Emacs.
|
|
|
|
# GNU Emacs is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation, either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
|
|
# GNU Emacs is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
import os, sys, traceback, inspect, imp, __main__
|
|
|
|
try:
|
|
set
|
|
except:
|
|
from sets import Set as set
|
|
|
|
__all__ = ["eexecfile", "eargs", "complete", "ehelp", "eimport", "modpath"]
|
|
|
|
def format_exception (filename, should_remove_self):
|
|
type, value, tb = sys.exc_info ()
|
|
sys.last_type = type
|
|
sys.last_value = value
|
|
sys.last_traceback = tb
|
|
if type is SyntaxError:
|
|
try: # parse the error message
|
|
msg, (dummy_filename, lineno, offset, line) = value
|
|
except:
|
|
pass # Not the format we expect; leave it alone
|
|
else:
|
|
# Stuff in the right filename
|
|
value = SyntaxError(msg, (filename, lineno, offset, line))
|
|
sys.last_value = value
|
|
res = traceback.format_exception_only (type, value)
|
|
# There are some compilation errors which do not provide traceback so we
|
|
# should not massage it.
|
|
if should_remove_self:
|
|
tblist = traceback.extract_tb (tb)
|
|
del tblist[:1]
|
|
res = traceback.format_list (tblist)
|
|
if res:
|
|
res.insert(0, "Traceback (most recent call last):\n")
|
|
res[len(res):] = traceback.format_exception_only (type, value)
|
|
# traceback.print_exception(type, value, tb)
|
|
for line in res: print(line, end=' ')
|
|
|
|
def eexecfile (file):
|
|
"""Execute FILE and then remove it.
|
|
Execute the file within the __main__ namespace.
|
|
If we get an exception, print a traceback with the top frame
|
|
(ourselves) excluded."""
|
|
# We cannot use real execfile since it has a bug where the file stays
|
|
# locked forever (under w32) if SyntaxError occurs.
|
|
# --- code based on code.py and PyShell.py.
|
|
try:
|
|
try:
|
|
source = open (file, "r").read()
|
|
code = compile (source, file, "exec")
|
|
# Other exceptions (shouldn't be any...) will (correctly) fall
|
|
# through to "final".
|
|
except (OverflowError, SyntaxError, ValueError):
|
|
# FIXME: When can compile() raise anything else than
|
|
# SyntaxError ????
|
|
format_exception (file, False)
|
|
return
|
|
try:
|
|
exec(code, __main__.__dict__)
|
|
except:
|
|
format_exception (file, True)
|
|
finally:
|
|
os.remove (file)
|
|
|
|
def eargs (name, imports):
|
|
"Get arglist of NAME for Eldoc &c."
|
|
try:
|
|
if imports: exec(imports)
|
|
parts = name.split ('.')
|
|
if len (parts) > 1:
|
|
exec('import ' + parts[0]) # might fail
|
|
func = eval (name)
|
|
if inspect.isbuiltin (func) or type(func) is type:
|
|
doc = func.__doc__
|
|
if doc.find (' ->') != -1:
|
|
print('_emacs_out', doc.split (' ->')[0])
|
|
else:
|
|
print('_emacs_out', doc.split ('\n')[0])
|
|
return
|
|
if inspect.ismethod (func):
|
|
func = func.im_func
|
|
if not inspect.isfunction (func):
|
|
print('_emacs_out ')
|
|
return
|
|
(args, varargs, varkw, defaults) = inspect.getargspec (func)
|
|
# No space between name and arglist for consistency with builtins.
|
|
print('_emacs_out', \
|
|
func.__name__ + inspect.formatargspec (args, varargs, varkw,
|
|
defaults))
|
|
except:
|
|
print("_emacs_out ")
|
|
|
|
def all_names (object):
|
|
"""Return (an approximation to) a list of all possible attribute
|
|
names reachable via the attributes of OBJECT, i.e. roughly the
|
|
leaves of the dictionary tree under it."""
|
|
|
|
def do_object (object, names):
|
|
if inspect.ismodule (object):
|
|
do_module (object, names)
|
|
elif inspect.isclass (object):
|
|
do_class (object, names)
|
|
# Might have an object without its class in scope.
|
|
elif hasattr (object, '__class__'):
|
|
names.add ('__class__')
|
|
do_class (object.__class__, names)
|
|
# Probably not a good idea to try to enumerate arbitrary
|
|
# dictionaries...
|
|
return names
|
|
|
|
def do_module (module, names):
|
|
if hasattr (module, '__all__'): # limited export list
|
|
names.update(module.__all__)
|
|
for i in module.__all__:
|
|
do_object (getattr (module, i), names)
|
|
else: # use all names
|
|
names.update(dir (module))
|
|
for i in dir (module):
|
|
do_object (getattr (module, i), names)
|
|
return names
|
|
|
|
def do_class (object, names):
|
|
ns = dir (object)
|
|
names.update(ns)
|
|
if hasattr (object, '__bases__'): # superclasses
|
|
for i in object.__bases__: do_object (i, names)
|
|
return names
|
|
|
|
return do_object (object, set([]))
|
|
|
|
def complete (name, imports):
|
|
"""Complete TEXT in NAMESPACE and print a Lisp list of completions.
|
|
Exec IMPORTS first."""
|
|
import __main__, keyword
|
|
|
|
def class_members(object):
|
|
names = dir (object)
|
|
if hasattr (object, '__bases__'):
|
|
for super in object.__bases__:
|
|
names = class_members (super)
|
|
return names
|
|
|
|
names = set([])
|
|
base = None
|
|
try:
|
|
dict = __main__.__dict__.copy()
|
|
if imports: exec(imports, dict)
|
|
l = len (name)
|
|
if not "." in name:
|
|
for src in [dir (__builtins__), keyword.kwlist, list(dict.keys())]:
|
|
for elt in src:
|
|
if elt[:l] == name: names.add(elt)
|
|
else:
|
|
base = name[:name.rfind ('.')]
|
|
name = name[name.rfind('.')+1:]
|
|
try:
|
|
object = eval (base, dict)
|
|
names = set(dir (object))
|
|
if hasattr (object, '__class__'):
|
|
names.add('__class__')
|
|
names.update(class_members (object))
|
|
except: names = all_names (dict)
|
|
except:
|
|
print(sys.exc_info())
|
|
names = []
|
|
|
|
l = len(name)
|
|
print('_emacs_out (', end=' ')
|
|
for n in names:
|
|
if name == n[:l]:
|
|
if base: print('"%s.%s"' % (base, n), end=' ')
|
|
else: print('"%s"' % n, end=' ')
|
|
print(')')
|
|
|
|
def ehelp (name, imports):
|
|
"""Get help on string NAME.
|
|
First try to eval name for, e.g. user definitions where we need
|
|
the object. Otherwise try the string form."""
|
|
locls = {}
|
|
if imports:
|
|
try: exec(imports, locls)
|
|
except: pass
|
|
try: help (eval (name, globals(), locls))
|
|
except: help (name)
|
|
|
|
def eimport (mod, dir):
|
|
"""Import module MOD with directory DIR at the head of the search path.
|
|
NB doesn't load from DIR if MOD shadows a system module."""
|
|
from __main__ import __dict__
|
|
|
|
path0 = sys.path[0]
|
|
sys.path[0] = dir
|
|
try:
|
|
try:
|
|
if mod in __dict__ and inspect.ismodule (__dict__[mod]):
|
|
imp.reload (__dict__[mod])
|
|
else:
|
|
__dict__[mod] = __import__ (mod)
|
|
except:
|
|
(type, value, tb) = sys.exc_info ()
|
|
print("Traceback (most recent call last):")
|
|
traceback.print_exception (type, value, tb.tb_next)
|
|
finally:
|
|
sys.path[0] = path0
|
|
|
|
def modpath (module):
|
|
"""Return the source file for the given MODULE (or None).
|
|
Assumes that MODULE.py and MODULE.pyc are in the same directory."""
|
|
try:
|
|
path = __import__ (module).__file__
|
|
if path[-4:] == '.pyc' and os.path.exists (path[0:-1]):
|
|
path = path[:-1]
|
|
print("_emacs_out", path)
|
|
except:
|
|
print("_emacs_out ()")
|
|
|
|
# print '_emacs_ok' # ready for input and can call continuation
|
|
|