ref: 592b8d5b3528ba34f5bd0fffebdffcac1c9450cd
dir: /sys/lib/python/idlelib/ScriptBinding.py/
"""Extension to execute code outside the Python shell window.
This adds the following commands:
- Check module does a full syntax check of the current module.
It also runs the tabnanny to catch any inconsistent tabs.
- Run module executes the module's code in the __main__ namespace. The window
must have been saved previously. The module is added to sys.modules, and is
also added to the __main__ namespace.
XXX GvR Redesign this interface (yet again) as follows:
- Present a dialog box for ``Run Module''
- Allow specify command line arguments in the dialog box
"""
import os
import re
import string
import tabnanny
import tokenize
import tkMessageBox
import PyShell
from configHandler import idleConf
IDENTCHARS = string.ascii_letters + string.digits + "_"
indent_message = """Error: Inconsistent indentation detected!
1) Your indentation is outright incorrect (easy to fix), OR
2) Your indentation mixes tabs and spaces.
To fix case 2, change all tabs to spaces by using Edit->Select All followed \
by Format->Untabify Region and specify the number of columns used by each tab.
"""
class ScriptBinding:
menudefs = [
('run', [None,
('Check Module', '<<check-module>>'),
('Run Module', '<<run-module>>'), ]), ]
def __init__(self, editwin):
self.editwin = editwin
# Provide instance variables referenced by Debugger
# XXX This should be done differently
self.flist = self.editwin.flist
self.root = self.editwin.root
def check_module_event(self, event):
filename = self.getfilename()
if not filename:
return
if not self.tabnanny(filename):
return
self.checksyntax(filename)
def tabnanny(self, filename):
f = open(filename, 'r')
try:
tabnanny.process_tokens(tokenize.generate_tokens(f.readline))
except tokenize.TokenError, msg:
msgtxt, (lineno, start) = msg
self.editwin.gotoline(lineno)
self.errorbox("Tabnanny Tokenizing Error",
"Token Error: %s" % msgtxt)
return False
except tabnanny.NannyNag, nag:
# The error messages from tabnanny are too confusing...
self.editwin.gotoline(nag.get_lineno())
self.errorbox("Tab/space error", indent_message)
return False
except IndentationError:
# From tokenize(), let compile() in checksyntax find it again.
pass
return True
def checksyntax(self, filename):
self.shell = shell = self.flist.open_shell()
saved_stream = shell.get_warning_stream()
shell.set_warning_stream(shell.stderr)
f = open(filename, 'r')
source = f.read()
f.close()
if '\r' in source:
source = re.sub(r"\r\n", "\n", source)
source = re.sub(r"\r", "\n", source)
if source and source[-1] != '\n':
source = source + '\n'
text = self.editwin.text
text.tag_remove("ERROR", "1.0", "end")
try:
try:
# If successful, return the compiled code
return compile(source, filename, "exec")
except (SyntaxError, OverflowError), err:
try:
msg, (errorfilename, lineno, offset, line) = err
if not errorfilename:
err.args = msg, (filename, lineno, offset, line)
err.filename = filename
self.colorize_syntax_error(msg, lineno, offset)
except:
msg = "*** " + str(err)
self.errorbox("Syntax error",
"There's an error in your program:\n" + msg)
return False
finally:
shell.set_warning_stream(saved_stream)
def colorize_syntax_error(self, msg, lineno, offset):
text = self.editwin.text
pos = "0.0 + %d lines + %d chars" % (lineno-1, offset-1)
text.tag_add("ERROR", pos)
char = text.get(pos)
if char and char in IDENTCHARS:
text.tag_add("ERROR", pos + " wordstart", pos)
if '\n' == text.get(pos): # error at line end
text.mark_set("insert", pos)
else:
text.mark_set("insert", pos + "+1c")
text.see(pos)
def run_module_event(self, event):
"""Run the module after setting up the environment.
First check the syntax. If OK, make sure the shell is active and
then transfer the arguments, set the run environment's working
directory to the directory of the module being executed and also
add that directory to its sys.path if not already included.
"""
filename = self.getfilename()
if not filename:
return
if not self.tabnanny(filename):
return
code = self.checksyntax(filename)
if not code:
return
shell = self.shell
interp = shell.interp
if PyShell.use_subprocess:
shell.restart_shell()
dirname = os.path.dirname(filename)
# XXX Too often this discards arguments the user just set...
interp.runcommand("""if 1:
_filename = %r
import sys as _sys
from os.path import basename as _basename
if (not _sys.argv or
_basename(_sys.argv[0]) != _basename(_filename)):
_sys.argv = [_filename]
import os as _os
_os.chdir(%r)
del _filename, _sys, _basename, _os
\n""" % (filename, dirname))
interp.prepend_syspath(filename)
# XXX KBK 03Jul04 When run w/o subprocess, runtime warnings still
# go to __stderr__. With subprocess, they go to the shell.
# Need to change streams in PyShell.ModifiedInterpreter.
interp.runcode(code)
def getfilename(self):
"""Get source filename. If not saved, offer to save (or create) file
The debugger requires a source file. Make sure there is one, and that
the current version of the source buffer has been saved. If the user
declines to save or cancels the Save As dialog, return None.
If the user has configured IDLE for Autosave, the file will be
silently saved if it already exists and is dirty.
"""
filename = self.editwin.io.filename
if not self.editwin.get_saved():
autosave = idleConf.GetOption('main', 'General',
'autosave', type='bool')
if autosave and filename:
self.editwin.io.save(None)
else:
reply = self.ask_save_dialog()
self.editwin.text.focus_set()
if reply == "ok":
self.editwin.io.save(None)
filename = self.editwin.io.filename
else:
filename = None
return filename
def ask_save_dialog(self):
msg = "Source Must Be Saved\n" + 5*' ' + "OK to Save?"
mb = tkMessageBox.Message(title="Save Before Run or Check",
message=msg,
icon=tkMessageBox.QUESTION,
type=tkMessageBox.OKCANCEL,
default=tkMessageBox.OK,
master=self.editwin.text)
return mb.show()
def errorbox(self, title, message):
# XXX This should really be a function of EditorWindow...
tkMessageBox.showerror(title, message, master=self.editwin.text)
self.editwin.text.focus_set()