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920dae64 AT |
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 | import PyShell | |
27 | ||
28 | from configHandler import idleConf | |
29 | ||
30 | IDENTCHARS = string.ascii_letters + string.digits + "_" | |
31 | ||
32 | indent_message = """Error: Inconsistent indentation detected! | |
33 | ||
34 | This means that either: | |
35 | ||
36 | 1) your indentation is outright incorrect (easy to fix), or | |
37 | ||
38 | 2) your indentation mixes tabs and spaces in a way that depends on \ | |
39 | how many spaces a tab is worth. | |
40 | ||
41 | To fix case 2, change all tabs to spaces by using Select All followed \ | |
42 | by Untabify Region (both in the Edit menu).""" | |
43 | ||
44 | ||
45 | class ScriptBinding: | |
46 | ||
47 | menudefs = [ | |
48 | ('run', [None, | |
49 | ('Check Module', '<<check-module>>'), | |
50 | ('Run Module', '<<run-module>>'), ]), ] | |
51 | ||
52 | def __init__(self, editwin): | |
53 | self.editwin = editwin | |
54 | # Provide instance variables referenced by Debugger | |
55 | # XXX This should be done differently | |
56 | self.flist = self.editwin.flist | |
57 | self.root = self.flist.root | |
58 | ||
59 | def check_module_event(self, event): | |
60 | filename = self.getfilename() | |
61 | if not filename: | |
62 | return | |
63 | if not self.tabnanny(filename): | |
64 | return | |
65 | self.checksyntax(filename) | |
66 | ||
67 | def tabnanny(self, filename): | |
68 | f = open(filename, 'r') | |
69 | try: | |
70 | tabnanny.process_tokens(tokenize.generate_tokens(f.readline)) | |
71 | except tokenize.TokenError, msg: | |
72 | msgtxt, (lineno, start) = msg | |
73 | self.editwin.gotoline(lineno) | |
74 | self.errorbox("Tabnanny Tokenizing Error", | |
75 | "Token Error: %s" % msgtxt) | |
76 | return False | |
77 | except tabnanny.NannyNag, nag: | |
78 | # The error messages from tabnanny are too confusing... | |
79 | self.editwin.gotoline(nag.get_lineno()) | |
80 | self.errorbox("Tab/space error", indent_message) | |
81 | return False | |
82 | return True | |
83 | ||
84 | def checksyntax(self, filename): | |
85 | self.shell = shell = self.flist.open_shell() | |
86 | saved_stream = shell.get_warning_stream() | |
87 | shell.set_warning_stream(shell.stderr) | |
88 | f = open(filename, 'r') | |
89 | source = f.read() | |
90 | f.close() | |
91 | if '\r' in source: | |
92 | source = re.sub(r"\r\n", "\n", source) | |
93 | source = re.sub(r"\r", "\n", source) | |
94 | if source and source[-1] != '\n': | |
95 | source = source + '\n' | |
96 | text = self.editwin.text | |
97 | text.tag_remove("ERROR", "1.0", "end") | |
98 | try: | |
99 | try: | |
100 | # If successful, return the compiled code | |
101 | return compile(source, filename, "exec") | |
102 | except (SyntaxError, OverflowError), err: | |
103 | try: | |
104 | msg, (errorfilename, lineno, offset, line) = err | |
105 | if not errorfilename: | |
106 | err.args = msg, (filename, lineno, offset, line) | |
107 | err.filename = filename | |
108 | self.colorize_syntax_error(msg, lineno, offset) | |
109 | except: | |
110 | msg = "*** " + str(err) | |
111 | self.errorbox("Syntax error", | |
112 | "There's an error in your program:\n" + msg) | |
113 | return False | |
114 | finally: | |
115 | shell.set_warning_stream(saved_stream) | |
116 | ||
117 | def colorize_syntax_error(self, msg, lineno, offset): | |
118 | text = self.editwin.text | |
119 | pos = "0.0 + %d lines + %d chars" % (lineno-1, offset-1) | |
120 | text.tag_add("ERROR", pos) | |
121 | char = text.get(pos) | |
122 | if char and char in IDENTCHARS: | |
123 | text.tag_add("ERROR", pos + " wordstart", pos) | |
124 | if '\n' == text.get(pos): # error at line end | |
125 | text.mark_set("insert", pos) | |
126 | else: | |
127 | text.mark_set("insert", pos + "+1c") | |
128 | text.see(pos) | |
129 | ||
130 | def run_module_event(self, event): | |
131 | """Run the module after setting up the environment. | |
132 | ||
133 | First check the syntax. If OK, make sure the shell is active and | |
134 | then transfer the arguments, set the run environment's working | |
135 | directory to the directory of the module being executed and also | |
136 | add that directory to its sys.path if not already included. | |
137 | ||
138 | """ | |
139 | filename = self.getfilename() | |
140 | if not filename: | |
141 | return | |
142 | code = self.checksyntax(filename) | |
143 | if not code: | |
144 | return | |
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 | ||
168 | def getfilename(self): | |
169 | """Get source filename. If not saved, offer to save (or create) file | |
170 | ||
171 | The debugger requires a source file. Make sure there is one, and that | |
172 | the current version of the source buffer has been saved. If the user | |
173 | declines to save or cancels the Save As dialog, return None. | |
174 | ||
175 | If the user has configured IDLE for Autosave, the file will be | |
176 | silently saved if it already exists and is dirty. | |
177 | ||
178 | """ | |
179 | filename = self.editwin.io.filename | |
180 | if not self.editwin.get_saved(): | |
181 | autosave = idleConf.GetOption('main', 'General', | |
182 | 'autosave', type='bool') | |
183 | if autosave and filename: | |
184 | self.editwin.io.save(None) | |
185 | else: | |
186 | reply = self.ask_save_dialog() | |
187 | self.editwin.text.focus_set() | |
188 | if reply == "ok": | |
189 | self.editwin.io.save(None) | |
190 | filename = self.editwin.io.filename | |
191 | else: | |
192 | filename = None | |
193 | return filename | |
194 | ||
195 | def ask_save_dialog(self): | |
196 | msg = "Source Must Be Saved\n" + 5*' ' + "OK to Save?" | |
197 | mb = tkMessageBox.Message(title="Save Before Run or Check", | |
198 | message=msg, | |
199 | icon=tkMessageBox.QUESTION, | |
200 | type=tkMessageBox.OKCANCEL, | |
201 | default=tkMessageBox.OK, | |
202 | master=self.editwin.text) | |
203 | return mb.show() | |
204 | ||
205 | def errorbox(self, title, message): | |
206 | # XXX This should really be a function of EditorWindow... | |
207 | tkMessageBox.showerror(title, message, master=self.editwin.text) | |
208 | self.editwin.text.focus_set() |