1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
|
# Copyright (C) 2004-2012 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
|
