From 80111f4f85a3500471c10cec120649848e40f765 Mon Sep 17 00:00:00 2001 From: Glenn Morris Date: Mon, 24 Sep 2007 00:16:47 +0000 Subject: [PATCH] Adam Hupp New file, split off from emacs.py. --- etc/emacs2.py | 239 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 239 insertions(+) create mode 100644 etc/emacs2.py diff --git a/etc/emacs2.py b/etc/emacs2.py new file mode 100644 index 00000000000..b48689508e6 --- /dev/null +++ b/etc/emacs2.py @@ -0,0 +1,239 @@ +"""Definitions used by commands sent to inferior Python in python.el.""" + +# Copyright (C) 2004, 2005, 2006, 2007 Free Software Foundation, Inc. +# Author: Dave Love + +# 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, 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; see the file COPYING. If not, write to the +# Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, +# Boston, MA 02110-1301, USA. + +import os, sys, traceback, inspect, __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, + +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 in __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 in dict + l = len (name) + if not "." in name: + for src in [dir (__builtins__), keyword.kwlist, 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 (', + for n in names: + if name == n[:l]: + if base: print '"%s.%s"' % (base, n), + else: print '"%s"' % n, + 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 in 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 __dict__.has_key(mod) and inspect.ismodule (__dict__[mod]): + 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 + +# arch-tag: d90408f3-90e2-4de4-99c2-6eb9c7b9ca46