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"""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 Redesign this interface (yet again) as follows:
- Present a dialog box for ``Run script''
- Allow specify command line arguments in the dialog box
"""
import tkMessageBox
indent_message = """Error: Inconsistent indentation detected!
This means that either:
1) your indentation is outright incorrect (easy to fix), or
2) your indentation mixes tabs and spaces in a way that depends on \
how many spaces a tab is worth.
To fix case 2, change all tabs to spaces by using Select All followed \
by Untabify Region (both in the Edit menu)."""
# XXX TBD Implement stop-execution KBK 11Jun02
class ScriptBinding:
menudefs = [
('run', [None,
('Check module', '<<check-module>>'),
('Run script', '<<run-script>>'), ]), ]
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.flist.root
def check_module_event(self, event):
filename = self.getfilename()
if not filename:
return
if not self.tabnanny(filename):
return
if not self.checksyntax(filename):
return
def tabnanny(self, filename):
import tabnanny
import tokenize
f = open(filename, 'r')
try:
tabnanny.process_tokens(tokenize.generate_tokens(f.readline))
except tokenize.TokenError, msg:
self.errorbox("Token error", "Token error:\n%s" % msg)
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
return True
def checksyntax(self, filename):
f = open(filename, 'r')
source = f.read()
f.close()
if '\r' in source:
import re
source = re.sub(r"\r\n", "\n", source)
if source and source[-1] != '\n':
source = source + '\n'
try:
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
except:
lineno = None
msg = "*** " + str(err)
if lineno:
self.editwin.gotoline(lineno)
self.errorbox("Syntax error",
"There's an error in your program:\n" + msg)
return True
def run_script_event(self, event):
filename = self.getfilename()
if not filename:
return
flist = self.editwin.flist
shell = flist.open_shell()
interp = shell.interp
if interp.tkconsole.executing:
interp.display_executing_dialog()
return
interp.restart_subprocess()
# XXX Too often this discards arguments the user just set...
interp.runcommand("""if 1:
_filename = %s
import sys as _sys
from os.path import basename as _basename
if (not _sys.argv or
_basename(_sys.argv[0]) != _basename(_filename)):
# XXX 25 July 2002 KBK should this be sys.argv not _sys.argv?
_sys.argv = [_filename]
del _filename, _sys, _basename
\n""" % `filename`)
interp.execfile(filename)
def getfilename(self):
# Logic to make sure we have a saved filename
# XXX Better logic would offer to save!
if not self.editwin.get_saved():
name = (self.editwin.short_title() or
self.editwin.long_title() or
"Untitled")
self.errorbox("Not saved",
"The buffer for %s is not saved.\n" % name +
"Please save it first!")
self.editwin.text.focus_set()
return
filename = self.editwin.io.filename
if not filename:
self.errorbox("No file name",
"This window has no file name")
return
return filename
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()
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