diff options
Diffstat (limited to 'Lib/idlelib/runscript.py')
| -rw-r--r-- | Lib/idlelib/runscript.py | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/Lib/idlelib/runscript.py b/Lib/idlelib/runscript.py new file mode 100644 index 0000000..79d86ad --- /dev/null +++ b/Lib/idlelib/runscript.py @@ -0,0 +1,207 @@ +"""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 tabnanny +import tokenize + +import tkinter.messagebox as tkMessageBox + +from idlelib.config import idleConf +from idlelib import macosx +from idlelib import pyshell + +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 + + if macosx.isCocoaTk(): + self.editwin.text_frame.bind('<<run-module-event-2>>', self._run_module_event) + + def check_module_event(self, event): + filename = self.getfilename() + if not filename: + return 'break' + if not self.checksyntax(filename): + return 'break' + if not self.tabnanny(filename): + return 'break' + + def tabnanny(self, filename): + # XXX: tabnanny should work on binary files as well + with tokenize.open(filename) as f: + try: + tabnanny.process_tokens(tokenize.generate_tokens(f.readline)) + except tokenize.TokenError as msg: + msgtxt, (lineno, start) = msg.args + self.editwin.gotoline(lineno) + self.errorbox("Tabnanny Tokenizing Error", + "Token Error: %s" % msgtxt) + return False + except tabnanny.NannyNag as 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): + self.shell = shell = self.flist.open_shell() + saved_stream = shell.get_warning_stream() + shell.set_warning_stream(shell.stderr) + with open(filename, 'rb') as f: + source = f.read() + if b'\r' in source: + source = source.replace(b'\r\n', b'\n') + source = source.replace(b'\r', b'\n') + if source and source[-1] != ord(b'\n'): + source = source + b'\n' + editwin = self.editwin + text = editwin.text + text.tag_remove("ERROR", "1.0", "end") + try: + # If successful, return the compiled code + return compile(source, filename, "exec") + except (SyntaxError, OverflowError, ValueError) as value: + msg = getattr(value, 'msg', '') or value or "<no detail available>" + lineno = getattr(value, 'lineno', '') or 1 + offset = getattr(value, 'offset', '') or 0 + if offset == 0: + lineno += 1 #mark end of offending line + pos = "0.0 + %d lines + %d chars" % (lineno-1, offset-1) + editwin.colorize_syntax_error(text, pos) + self.errorbox("SyntaxError", "%-20s" % msg) + return False + finally: + shell.set_warning_stream(saved_stream) + + def run_module_event(self, event): + if macosx.isCocoaTk(): + # Tk-Cocoa in MacOSX is broken until at least + # Tk 8.5.9, and without this rather + # crude workaround IDLE would hang when a user + # tries to run a module using the keyboard shortcut + # (the menu item works fine). + self.editwin.text_frame.after(200, + lambda: self.editwin.text_frame.event_generate('<<run-module-event-2>>')) + return 'break' + else: + return self._run_module_event(event) + + 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 'break' + code = self.checksyntax(filename) + if not code: + return 'break' + if not self.tabnanny(filename): + return 'break' + interp = self.shell.interp + if pyshell.use_subprocess: + interp.restart_subprocess(with_cwd=False, filename= + self.editwin._filename_to_unicode(filename)) + dirname = os.path.dirname(filename) + # XXX Too often this discards arguments the user just set... + interp.runcommand("""if 1: + __file__ = {filename!r} + import sys as _sys + from os.path import basename as _basename + if (not _sys.argv or + _basename(_sys.argv[0]) != _basename(__file__)): + _sys.argv = [__file__] + import os as _os + _os.chdir({dirname!r}) + del _sys, _basename, _os + \n""".format(filename=filename, dirname=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) + return 'break' + + 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: + confirm = self.ask_save_dialog() + self.editwin.text.focus_set() + if confirm: + 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?" + confirm = tkMessageBox.askokcancel(title="Save Before Run or Check", + message=msg, + default=tkMessageBox.OK, + parent=self.editwin.text) + return confirm + + def errorbox(self, title, message): + # XXX This should really be a function of EditorWindow... + tkMessageBox.showerror(title, message, parent=self.editwin.text) + self.editwin.text.focus_set() |