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207 lines
7.9 KiB
Python
207 lines
7.9 KiB
Python
"""Extension to execute code outside the Python shell window.
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This adds the following commands:
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- Check module does a full syntax check of the current module.
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It also runs the tabnanny to catch any inconsistent tabs.
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- Run module executes the module's code in the __main__ namespace. The window
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must have been saved previously. The module is added to sys.modules, and is
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also added to the __main__ namespace.
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XXX GvR Redesign this interface (yet again) as follows:
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- Present a dialog box for ``Run Module''
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- Allow specify command line arguments in the dialog box
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"""
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import os
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import re
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import string
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import tabnanny
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import tokenize
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import tkinter.messagebox as tkMessageBox
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from idlelib.EditorWindow import EditorWindow
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from idlelib import PyShell, IOBinding
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from idlelib.configHandler import idleConf
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from idlelib import macosxSupport
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indent_message = """Error: Inconsistent indentation detected!
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1) Your indentation is outright incorrect (easy to fix), OR
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2) Your indentation mixes tabs and spaces.
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To fix case 2, change all tabs to spaces by using Edit->Select All followed \
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by Format->Untabify Region and specify the number of columns used by each tab.
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"""
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class ScriptBinding:
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menudefs = [
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('run', [None,
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('Check Module', '<<check-module>>'),
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('Run Module', '<<run-module>>'), ]), ]
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def __init__(self, editwin):
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self.editwin = editwin
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# Provide instance variables referenced by Debugger
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# XXX This should be done differently
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self.flist = self.editwin.flist
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self.root = self.editwin.root
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if macosxSupport.isCocoaTk():
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self.editwin.text_frame.bind('<<run-module-event-2>>', self._run_module_event)
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def check_module_event(self, event):
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filename = self.getfilename()
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if not filename:
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return 'break'
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if not self.checksyntax(filename):
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return 'break'
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if not self.tabnanny(filename):
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return 'break'
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def tabnanny(self, filename):
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# XXX: tabnanny should work on binary files as well
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with tokenize.open(filename) as f:
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try:
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tabnanny.process_tokens(tokenize.generate_tokens(f.readline))
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except tokenize.TokenError as msg:
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msgtxt, (lineno, start) = msg
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self.editwin.gotoline(lineno)
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self.errorbox("Tabnanny Tokenizing Error",
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"Token Error: %s" % msgtxt)
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return False
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except tabnanny.NannyNag as nag:
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# The error messages from tabnanny are too confusing...
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self.editwin.gotoline(nag.get_lineno())
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self.errorbox("Tab/space error", indent_message)
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return False
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return True
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def checksyntax(self, filename):
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self.shell = shell = self.flist.open_shell()
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saved_stream = shell.get_warning_stream()
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shell.set_warning_stream(shell.stderr)
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with open(filename, 'rb') as f:
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source = f.read()
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if b'\r' in source:
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source = source.replace(b'\r\n', b'\n')
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source = source.replace(b'\r', b'\n')
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if source and source[-1] != ord(b'\n'):
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source = source + b'\n'
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editwin = self.editwin
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text = editwin.text
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text.tag_remove("ERROR", "1.0", "end")
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try:
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# If successful, return the compiled code
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return compile(source, filename, "exec")
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except (SyntaxError, OverflowError, ValueError) as value:
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msg = getattr(value, 'msg', '') or value or "<no detail available>"
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lineno = getattr(value, 'lineno', '') or 1
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offset = getattr(value, 'offset', '') or 0
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if offset == 0:
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lineno += 1 #mark end of offending line
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pos = "0.0 + %d lines + %d chars" % (lineno-1, offset-1)
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editwin.colorize_syntax_error(text, pos)
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self.errorbox("SyntaxError", "%-20s" % msg)
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return False
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finally:
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shell.set_warning_stream(saved_stream)
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def run_module_event(self, event):
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if macosxSupport.isCocoaTk():
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# Tk-Cocoa in MacOSX is broken until at least
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# Tk 8.5.9, and without this rather
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# crude workaround IDLE would hang when a user
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# tries to run a module using the keyboard shortcut
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# (the menu item works fine).
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self.editwin.text_frame.after(200,
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lambda: self.editwin.text_frame.event_generate('<<run-module-event-2>>'))
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return 'break'
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else:
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return self._run_module_event(event)
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def _run_module_event(self, event):
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"""Run the module after setting up the environment.
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First check the syntax. If OK, make sure the shell is active and
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then transfer the arguments, set the run environment's working
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directory to the directory of the module being executed and also
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add that directory to its sys.path if not already included.
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"""
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filename = self.getfilename()
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if not filename:
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return 'break'
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code = self.checksyntax(filename)
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if not code:
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return 'break'
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if not self.tabnanny(filename):
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return 'break'
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interp = self.shell.interp
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if PyShell.use_subprocess:
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interp.restart_subprocess(with_cwd=False)
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dirname = os.path.dirname(filename)
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# XXX Too often this discards arguments the user just set...
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interp.runcommand("""if 1:
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__file__ = {filename!r}
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import sys as _sys
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from os.path import basename as _basename
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if (not _sys.argv or
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_basename(_sys.argv[0]) != _basename(__file__)):
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_sys.argv = [__file__]
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import os as _os
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_os.chdir({dirname!r})
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del _sys, _basename, _os
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\n""".format(filename=filename, dirname=dirname))
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interp.prepend_syspath(filename)
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# XXX KBK 03Jul04 When run w/o subprocess, runtime warnings still
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# go to __stderr__. With subprocess, they go to the shell.
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# Need to change streams in PyShell.ModifiedInterpreter.
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interp.runcode(code)
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return 'break'
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def getfilename(self):
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"""Get source filename. If not saved, offer to save (or create) file
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The debugger requires a source file. Make sure there is one, and that
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the current version of the source buffer has been saved. If the user
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declines to save or cancels the Save As dialog, return None.
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If the user has configured IDLE for Autosave, the file will be
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silently saved if it already exists and is dirty.
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"""
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filename = self.editwin.io.filename
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if not self.editwin.get_saved():
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autosave = idleConf.GetOption('main', 'General',
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'autosave', type='bool')
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if autosave and filename:
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self.editwin.io.save(None)
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else:
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confirm = self.ask_save_dialog()
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self.editwin.text.focus_set()
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if confirm:
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self.editwin.io.save(None)
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filename = self.editwin.io.filename
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else:
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filename = None
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return filename
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def ask_save_dialog(self):
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msg = "Source Must Be Saved\n" + 5*' ' + "OK to Save?"
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confirm = tkMessageBox.askokcancel(title="Save Before Run or Check",
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message=msg,
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default=tkMessageBox.OK,
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master=self.editwin.text)
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return confirm
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def errorbox(self, title, message):
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# XXX This should really be a function of EditorWindow...
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tkMessageBox.showerror(title, message, master=self.editwin.text)
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self.editwin.text.focus_set()
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