source: python/vendor/Python-2.6.5/Lib/idlelib/ScriptBinding.py

Last change on this file was 2, checked in by Yuri Dario, 15 years ago

Initial import for vendor code.
  • Property svn:eol-style set to native
File size: 7.6 KB
Line 
1"""Extension to execute code outside the Python shell window.
2
3This 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
12XXX 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
20import os
21import re
22import string
23import tabnanny
24import tokenize
25import tkMessageBox
26import PyShell
27
28from configHandler import idleConf
29
30IDENTCHARS = string.ascii_letters + string.digits + "_"
31
32indent_message = """Error: Inconsistent indentation detected!
33
341) Your indentation is outright incorrect (easy to fix), OR
35
362) Your indentation mixes tabs and spaces.
37
38To fix case 2, change all tabs to spaces by using Edit->Select All followed \
39by Format->Untabify Region and specify the number of columns used by each tab.
40"""
41
42class ScriptBinding:
43
44 menudefs = [
45 ('run', [None,
46 ('Check Module', '<<check-module>>'),
47 ('Run Module', '<<run-module>>'), ]), ]
48
49 def __init__(self, editwin):
50 self.editwin = editwin
51 # Provide instance variables referenced by Debugger
52 # XXX This should be done differently
53 self.flist = self.editwin.flist
54 self.root = self.editwin.root
55
56 def check_module_event(self, event):
57 filename = self.getfilename()
58 if not filename:
59 return 'break'
60 if not self.checksyntax(filename):
61 return 'break'
62 if not self.tabnanny(filename):
63 return 'break'
64
65 def tabnanny(self, filename):
66 f = open(filename, 'r')
67 try:
68 tabnanny.process_tokens(tokenize.generate_tokens(f.readline))
69 except tokenize.TokenError, msg:
70 msgtxt, (lineno, start) = msg
71 self.editwin.gotoline(lineno)
72 self.errorbox("Tabnanny Tokenizing Error",
73 "Token Error: %s" % msgtxt)
74 return False
75 except tabnanny.NannyNag, nag:
76 # The error messages from tabnanny are too confusing...
77 self.editwin.gotoline(nag.get_lineno())
78 self.errorbox("Tab/space error", indent_message)
79 return False
80 return True
81
82 def checksyntax(self, filename):
83 self.shell = shell = self.flist.open_shell()
84 saved_stream = shell.get_warning_stream()
85 shell.set_warning_stream(shell.stderr)
86 f = open(filename, 'r')
87 source = f.read()
88 f.close()
89 if '\r' in source:
90 source = re.sub(r"\r\n", "\n", source)
91 source = re.sub(r"\r", "\n", source)
92 if source and source[-1] != '\n':
93 source = source + '\n'
94 text = self.editwin.text
95 text.tag_remove("ERROR", "1.0", "end")
96 try:
97 try:
98 # If successful, return the compiled code
99 return compile(source, filename, "exec")
100 except (SyntaxError, OverflowError), err:
101 try:
102 msg, (errorfilename, lineno, offset, line) = err
103 if not errorfilename:
104 err.args = msg, (filename, lineno, offset, line)
105 err.filename = filename
106 self.colorize_syntax_error(msg, lineno, offset)
107 except:
108 msg = "*** " + str(err)
109 self.errorbox("Syntax error",
110 "There's an error in your program:\n" + msg)
111 return False
112 finally:
113 shell.set_warning_stream(saved_stream)
114
115 def colorize_syntax_error(self, msg, lineno, offset):
116 text = self.editwin.text
117 pos = "0.0 + %d lines + %d chars" % (lineno-1, offset-1)
118 text.tag_add("ERROR", pos)
119 char = text.get(pos)
120 if char and char in IDENTCHARS:
121 text.tag_add("ERROR", pos + " wordstart", pos)
122 if '\n' == text.get(pos): # error at line end
123 text.mark_set("insert", pos)
124 else:
125 text.mark_set("insert", pos + "+1c")
126 text.see(pos)
127
128 def run_module_event(self, event):
129 """Run the module after setting up the environment.
130
131 First check the syntax. If OK, make sure the shell is active and
132 then transfer the arguments, set the run environment's working
133 directory to the directory of the module being executed and also
134 add that directory to its sys.path if not already included.
135
136 """
137 filename = self.getfilename()
138 if not filename:
139 return 'break'
140 code = self.checksyntax(filename)
141 if not code:
142 return 'break'
143 if not self.tabnanny(filename):
144 return 'break'
145 shell = self.shell
146 interp = shell.interp
147 if PyShell.use_subprocess:
148 shell.restart_shell()
149 dirname = os.path.dirname(filename)
150 # XXX Too often this discards arguments the user just set...
151 interp.runcommand("""if 1:
152 _filename = %r
153 import sys as _sys
154 from os.path import basename as _basename
155 if (not _sys.argv or
156 _basename(_sys.argv[0]) != _basename(_filename)):
157 _sys.argv = [_filename]
158 import os as _os
159 _os.chdir(%r)
160 del _filename, _sys, _basename, _os
161 \n""" % (filename, dirname))
162 interp.prepend_syspath(filename)
163 # XXX KBK 03Jul04 When run w/o subprocess, runtime warnings still
164 # go to __stderr__. With subprocess, they go to the shell.
165 # Need to change streams in PyShell.ModifiedInterpreter.
166 interp.runcode(code)
167 return 'break'
168
169 def getfilename(self):
170 """Get source filename. If not saved, offer to save (or create) file
171
172 The debugger requires a source file. Make sure there is one, and that
173 the current version of the source buffer has been saved. If the user
174 declines to save or cancels the Save As dialog, return None.
175
176 If the user has configured IDLE for Autosave, the file will be
177 silently saved if it already exists and is dirty.
178
179 """
180 filename = self.editwin.io.filename
181 if not self.editwin.get_saved():
182 autosave = idleConf.GetOption('main', 'General',
183 'autosave', type='bool')
184 if autosave and filename:
185 self.editwin.io.save(None)
186 else:
187 reply = self.ask_save_dialog()
188 self.editwin.text.focus_set()
189 if reply == "ok":
190 self.editwin.io.save(None)
191 filename = self.editwin.io.filename
192 else:
193 filename = None
194 return filename
195
196 def ask_save_dialog(self):
197 msg = "Source Must Be Saved\n" + 5*' ' + "OK to Save?"
198 mb = tkMessageBox.Message(title="Save Before Run or Check",
199 message=msg,
200 icon=tkMessageBox.QUESTION,
201 type=tkMessageBox.OKCANCEL,
202 default=tkMessageBox.OK,
203 master=self.editwin.text)
204 return mb.show()
205
206 def errorbox(self, title, message):
207 # XXX This should really be a function of EditorWindow...
208 tkMessageBox.showerror(title, message, master=self.editwin.text)
209 self.editwin.text.focus_set()
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