1 """Extension to execute code outside the Python shell window. 2 3 This adds the following commands: 4 5 - Check module does a full syntax check of the current module. 6 It also runs the tabnanny to catch any inconsistent tabs. 7 8 - Run module executes the module's code in the __main__ namespace. The window 9 must have been saved previously. The module is added to sys.modules, and is 10 also added to the __main__ namespace. 11 12 XXX GvR Redesign this interface (yet again) as follows: 13 14 - Present a dialog box for ``Run Module'' 15 16 - Allow specify command line arguments in the dialog box 17 18 """ 19 20 import os 21 import re 22 import string 23 import tabnanny 24 import tokenize 25 import tkMessageBox 26 from idlelib import PyShell 27 28 from idlelib.configHandler import idleConf 29 from idlelib import macosxSupport 30 31 IDENTCHARS = string.ascii_letters + string.digits + "_" 32 33 indent_message = """Error: Inconsistent indentation detected! 34 35 1) Your indentation is outright incorrect (easy to fix), OR 36 37 2) Your indentation mixes tabs and spaces. 38 39 To fix case 2, change all tabs to spaces by using Edit->Select All followed \ 40 by Format->Untabify Region and specify the number of columns used by each tab. 41 """ 42 43 class ScriptBinding: 44 45 menudefs = [ 46 ('run', [None, 47 ('Check Module', '<<check-module>>'), 48 ('Run Module', '<<run-module>>'), ]), ] 49 50 def __init__(self, editwin): 51 self.editwin = editwin 52 # Provide instance variables referenced by Debugger 53 # XXX This should be done differently 54 self.flist = self.editwin.flist 55 self.root = self.editwin.root 56 57 if macosxSupport.isCocoaTk(): 58 self.editwin.text_frame.bind('<<run-module-event-2>>', self._run_module_event) 59 60 def check_module_event(self, event): 61 filename = self.getfilename() 62 if not filename: 63 return 'break' 64 if not self.checksyntax(filename): 65 return 'break' 66 if not self.tabnanny(filename): 67 return 'break' 68 69 def tabnanny(self, filename): 70 f = open(filename, 'r') 71 try: 72 tabnanny.process_tokens(tokenize.generate_tokens(f.readline)) 73 except tokenize.TokenError as msg: 74 msgtxt, (lineno, start) = msg.args 75 self.editwin.gotoline(lineno) 76 self.errorbox("Tabnanny Tokenizing Error", 77 "Token Error: %s" % msgtxt) 78 return False 79 except tabnanny.NannyNag as nag: 80 # The error messages from tabnanny are too confusing... 81 self.editwin.gotoline(nag.get_lineno()) 82 self.errorbox("Tab/space error", indent_message) 83 return False 84 return True 85 86 def checksyntax(self, filename): 87 self.shell = shell = self.flist.open_shell() 88 saved_stream = shell.get_warning_stream() 89 shell.set_warning_stream(shell.stderr) 90 with open(filename, 'r') as f: 91 source = f.read() 92 if '\r' in source: 93 source = re.sub(r"\r\n", "\n", source) 94 source = re.sub(r"\r", "\n", source) 95 if source and source[-1] != '\n': 96 source = source + '\n' 97 text = self.editwin.text 98 text.tag_remove("ERROR", "1.0", "end") 99 try: 100 try: 101 # If successful, return the compiled code 102 return compile(source, filename, "exec") 103 except (SyntaxError, OverflowError, ValueError) as err: 104 try: 105 msg, (errorfilename, lineno, offset, line) = err 106 if not errorfilename: 107 err.args = msg, (filename, lineno, offset, line) 108 err.filename = filename 109 self.colorize_syntax_error(msg, lineno, offset) 110 except: 111 msg = "*** " + str(err) 112 self.errorbox("Syntax error", 113 "There's an error in your program:\n" + msg) 114 return False 115 finally: 116 shell.set_warning_stream(saved_stream) 117 118 def colorize_syntax_error(self, msg, lineno, offset): 119 text = self.editwin.text 120 pos = "0.0 + %d lines + %d chars" % (lineno-1, offset-1) 121 text.tag_add("ERROR", pos) 122 char = text.get(pos) 123 if char and char in IDENTCHARS: 124 text.tag_add("ERROR", pos + " wordstart", pos) 125 if '\n' == text.get(pos): # error at line end 126 text.mark_set("insert", pos) 127 else: 128 text.mark_set("insert", pos + "+1c") 129 text.see(pos) 130 131 def run_module_event(self, event): 132 """Run the module after setting up the environment. 133 134 First check the syntax. If OK, make sure the shell is active and 135 then transfer the arguments, set the run environment's working 136 directory to the directory of the module being executed and also 137 add that directory to its sys.path if not already included. 138 139 """ 140 filename = self.getfilename() 141 if not filename: 142 return 'break' 143 code = self.checksyntax(filename) 144 if not code: 145 return 'break' 146 if not self.tabnanny(filename): 147 return 'break' 148 interp = self.shell.interp 149 if PyShell.use_subprocess: 150 interp.restart_subprocess(with_cwd=False, filename=code.co_filename) 151 dirname = os.path.dirname(filename) 152 # XXX Too often this discards arguments the user just set... 153 interp.runcommand("""if 1: 154 __file__ = {filename!r} 155 import sys as _sys 156 from os.path import basename as _basename 157 if (not _sys.argv or 158 _basename(_sys.argv[0]) != _basename(__file__)): 159 _sys.argv = [__file__] 160 import os as _os 161 _os.chdir({dirname!r}) 162 del _sys, _basename, _os 163 \n""".format(filename=filename, dirname=dirname)) 164 interp.prepend_syspath(filename) 165 # XXX KBK 03Jul04 When run w/o subprocess, runtime warnings still 166 # go to __stderr__. With subprocess, they go to the shell. 167 # Need to change streams in PyShell.ModifiedInterpreter. 168 interp.runcode(code) 169 return 'break' 170 171 if macosxSupport.isCocoaTk(): 172 # Tk-Cocoa in MacOSX is broken until at least 173 # Tk 8.5.9, and without this rather 174 # crude workaround IDLE would hang when a user 175 # tries to run a module using the keyboard shortcut 176 # (the menu item works fine). 177 _run_module_event = run_module_event 178 179 def run_module_event(self, event): 180 self.editwin.text_frame.after(200, 181 lambda: self.editwin.text_frame.event_generate('<<run-module-event-2>>')) 182 return 'break' 183 184 def getfilename(self): 185 """Get source filename. If not saved, offer to save (or create) file 186 187 The debugger requires a source file. Make sure there is one, and that 188 the current version of the source buffer has been saved. If the user 189 declines to save or cancels the Save As dialog, return None. 190 191 If the user has configured IDLE for Autosave, the file will be 192 silently saved if it already exists and is dirty. 193 194 """ 195 filename = self.editwin.io.filename 196 if not self.editwin.get_saved(): 197 autosave = idleConf.GetOption('main', 'General', 198 'autosave', type='bool') 199 if autosave and filename: 200 self.editwin.io.save(None) 201 else: 202 confirm = self.ask_save_dialog() 203 self.editwin.text.focus_set() 204 if confirm: 205 self.editwin.io.save(None) 206 filename = self.editwin.io.filename 207 else: 208 filename = None 209 return filename 210 211 def ask_save_dialog(self): 212 msg = "Source Must Be Saved\n" + 5*' ' + "OK to Save?" 213 confirm = tkMessageBox.askokcancel(title="Save Before Run or Check", 214 message=msg, 215 default=tkMessageBox.OK, 216 parent=self.editwin.text) 217 return confirm 218 219 def errorbox(self, title, message): 220 # XXX This should really be a function of EditorWindow... 221 tkMessageBox.showerror(title, message, parent=self.editwin.text) 222 self.editwin.text.focus_set() 223
