mirror of https://github.com/python/cpython
210 lines
7.5 KiB
Python
210 lines
7.5 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 tkMessageBox
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import PyShell
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from configHandler import idleConf
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IDENTCHARS = string.ascii_letters + string.digits + "_"
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indent_message = """Error: Inconsistent indentation detected!
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This means that either:
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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 in a way that depends on \
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how many spaces a tab is worth.
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To fix case 2, change all tabs to spaces by using Select All followed \
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by Untabify Region (both in the Edit menu)."""
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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.flist.root
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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
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if not self.tabnanny(filename):
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return
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self.checksyntax(filename)
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def tabnanny(self, filename):
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f = open(filename, 'r')
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try:
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tabnanny.process_tokens(tokenize.generate_tokens(f.readline))
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except tokenize.TokenError, 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, 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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f = open(filename, 'r')
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source = f.read()
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f.close()
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if '\r' in source:
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source = re.sub(r"\r\n", "\n", source)
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if source and source[-1] != '\n':
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source = source + '\n'
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text = self.editwin.text
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text.tag_remove("ERROR", "1.0", "end")
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try:
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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), err:
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try:
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msg, (errorfilename, lineno, offset, line) = err
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if not errorfilename:
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err.args = msg, (filename, lineno, offset, line)
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err.filename = filename
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self.colorize_syntax_error(msg, lineno, offset)
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except:
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msg = "*** " + str(err)
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self.errorbox("Syntax error",
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"There's an error in your program:\n" + 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 colorize_syntax_error(self, msg, lineno, offset):
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text = self.editwin.text
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pos = "0.0 + %d lines + %d chars" % (lineno-1, offset-1)
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text.tag_add("ERROR", pos)
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char = text.get(pos)
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if char and char in IDENTCHARS:
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text.tag_add("ERROR", pos + " wordstart", pos)
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if '\n' == text.get(pos): # error at line end
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text.mark_set("insert", pos)
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else:
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text.mark_set("insert", pos + "+1c")
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text.see(pos)
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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
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if not self.tabnanny(filename):
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return
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code = self.checksyntax(filename)
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if not code:
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return
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shell = self.shell
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interp = shell.interp
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if PyShell.use_subprocess:
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shell.restart_shell()
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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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_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(_filename)):
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_sys.argv = [_filename]
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import os as _os
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_os.chdir(%r)
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del _filename, _sys, _basename, _os
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\n""" % (filename, 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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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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reply = self.ask_save_dialog()
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self.editwin.text.focus_set()
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if reply == "ok":
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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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mb = tkMessageBox.Message(title="Save Before Run or Check",
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message=msg,
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icon=tkMessageBox.QUESTION,
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type=tkMessageBox.OKCANCEL,
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default=tkMessageBox.OK,
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master=self.editwin.text)
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return mb.show()
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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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