Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 1 | """Debugger basics""" |
Guido van Rossum | babe2bf | 1992-01-22 22:21:31 +0000 | [diff] [blame] | 2 | |
Georg Brandl | 4d4313d | 2009-05-05 08:54:11 +0000 | [diff] [blame] | 3 | import fnmatch |
Guido van Rossum | babe2bf | 1992-01-22 22:21:31 +0000 | [diff] [blame] | 4 | import sys |
Barry Warsaw | 148ffbc | 1999-09-09 23:24:33 +0000 | [diff] [blame] | 5 | import os |
Guido van Rossum | 4808dcb | 1996-10-15 14:40:21 +0000 | [diff] [blame] | 6 | import types |
Guido van Rossum | babe2bf | 1992-01-22 22:21:31 +0000 | [diff] [blame] | 7 | |
Skip Montanaro | e99d5ea | 2001-01-20 19:54:20 +0000 | [diff] [blame] | 8 | __all__ = ["BdbQuit","Bdb","Breakpoint"] |
| 9 | |
Neal Norwitz | 93cf79f | 2002-03-31 14:06:41 +0000 | [diff] [blame] | 10 | class BdbQuit(Exception): |
| 11 | """Exception to give up completely""" |
Guido van Rossum | babe2bf | 1992-01-22 22:21:31 +0000 | [diff] [blame] | 12 | |
| 13 | |
Guido van Rossum | 6ea27cc | 1999-01-25 20:51:34 +0000 | [diff] [blame] | 14 | class Bdb: |
Tim Peters | 11cf605 | 2001-01-14 21:54:20 +0000 | [diff] [blame] | 15 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 16 | """Generic Python debugger base class. |
Guido van Rossum | 6ea27cc | 1999-01-25 20:51:34 +0000 | [diff] [blame] | 17 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 18 | This class takes care of details of the trace facility; |
| 19 | a derived class should implement user interaction. |
| 20 | The standard debugger class (pdb.Pdb) is an example. |
| 21 | """ |
Guido van Rossum | 6ea27cc | 1999-01-25 20:51:34 +0000 | [diff] [blame] | 22 | |
Georg Brandl | 4d4313d | 2009-05-05 08:54:11 +0000 | [diff] [blame] | 23 | def __init__(self, skip=None): |
| 24 | self.skip = set(skip) if skip else None |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 25 | self.breaks = {} |
| 26 | self.fncache = {} |
Senthil Kumaran | 7f6d4e1 | 2012-05-01 10:36:28 +0800 | [diff] [blame^] | 27 | self.frame_returning = None |
Barry Warsaw | 148ffbc | 1999-09-09 23:24:33 +0000 | [diff] [blame] | 28 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 29 | def canonic(self, filename): |
Guido van Rossum | 42f5332 | 2001-11-29 02:50:15 +0000 | [diff] [blame] | 30 | if filename == "<" + filename[1:-1] + ">": |
| 31 | return filename |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 32 | canonic = self.fncache.get(filename) |
| 33 | if not canonic: |
| 34 | canonic = os.path.abspath(filename) |
Guido van Rossum | bdba320 | 2002-02-25 23:23:24 +0000 | [diff] [blame] | 35 | canonic = os.path.normcase(canonic) |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 36 | self.fncache[filename] = canonic |
| 37 | return canonic |
Tim Peters | 11cf605 | 2001-01-14 21:54:20 +0000 | [diff] [blame] | 38 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 39 | def reset(self): |
| 40 | import linecache |
| 41 | linecache.checkcache() |
| 42 | self.botframe = None |
Benjamin Peterson | 9835394 | 2008-05-11 14:13:25 +0000 | [diff] [blame] | 43 | self._set_stopinfo(None, None) |
Tim Peters | 11cf605 | 2001-01-14 21:54:20 +0000 | [diff] [blame] | 44 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 45 | def trace_dispatch(self, frame, event, arg): |
| 46 | if self.quitting: |
| 47 | return # None |
| 48 | if event == 'line': |
| 49 | return self.dispatch_line(frame) |
| 50 | if event == 'call': |
| 51 | return self.dispatch_call(frame, arg) |
| 52 | if event == 'return': |
| 53 | return self.dispatch_return(frame, arg) |
| 54 | if event == 'exception': |
| 55 | return self.dispatch_exception(frame, arg) |
Nicholas Bastin | c69ebe8 | 2004-03-24 21:57:10 +0000 | [diff] [blame] | 56 | if event == 'c_call': |
| 57 | return self.trace_dispatch |
| 58 | if event == 'c_exception': |
| 59 | return self.trace_dispatch |
| 60 | if event == 'c_return': |
| 61 | return self.trace_dispatch |
Walter Dörwald | 70a6b49 | 2004-02-12 17:35:32 +0000 | [diff] [blame] | 62 | print 'bdb.Bdb.dispatch: unknown debugging event:', repr(event) |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 63 | return self.trace_dispatch |
Tim Peters | 11cf605 | 2001-01-14 21:54:20 +0000 | [diff] [blame] | 64 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 65 | def dispatch_line(self, frame): |
| 66 | if self.stop_here(frame) or self.break_here(frame): |
| 67 | self.user_line(frame) |
| 68 | if self.quitting: raise BdbQuit |
| 69 | return self.trace_dispatch |
Tim Peters | 11cf605 | 2001-01-14 21:54:20 +0000 | [diff] [blame] | 70 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 71 | def dispatch_call(self, frame, arg): |
| 72 | # XXX 'arg' is no longer used |
| 73 | if self.botframe is None: |
| 74 | # First call of dispatch since reset() |
Christian Tismer | 313a751 | 2002-05-28 08:04:00 +0000 | [diff] [blame] | 75 | self.botframe = frame.f_back # (CT) Note that this may also be None! |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 76 | return self.trace_dispatch |
| 77 | if not (self.stop_here(frame) or self.break_anywhere(frame)): |
| 78 | # No need to trace this function |
| 79 | return # None |
| 80 | self.user_call(frame, arg) |
| 81 | if self.quitting: raise BdbQuit |
| 82 | return self.trace_dispatch |
Tim Peters | 11cf605 | 2001-01-14 21:54:20 +0000 | [diff] [blame] | 83 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 84 | def dispatch_return(self, frame, arg): |
| 85 | if self.stop_here(frame) or frame == self.returnframe: |
Senthil Kumaran | 7f6d4e1 | 2012-05-01 10:36:28 +0800 | [diff] [blame^] | 86 | self.frame_returning = frame |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 87 | self.user_return(frame, arg) |
Senthil Kumaran | 7f6d4e1 | 2012-05-01 10:36:28 +0800 | [diff] [blame^] | 88 | self.frame_returning = None |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 89 | if self.quitting: raise BdbQuit |
Just van Rossum | ae1f65f | 2001-06-25 18:01:24 +0000 | [diff] [blame] | 90 | return self.trace_dispatch |
Tim Peters | 11cf605 | 2001-01-14 21:54:20 +0000 | [diff] [blame] | 91 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 92 | def dispatch_exception(self, frame, arg): |
| 93 | if self.stop_here(frame): |
| 94 | self.user_exception(frame, arg) |
| 95 | if self.quitting: raise BdbQuit |
| 96 | return self.trace_dispatch |
Tim Peters | 11cf605 | 2001-01-14 21:54:20 +0000 | [diff] [blame] | 97 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 98 | # Normally derived classes don't override the following |
| 99 | # methods, but they may if they want to redefine the |
| 100 | # definition of stopping and breakpoints. |
Tim Peters | 11cf605 | 2001-01-14 21:54:20 +0000 | [diff] [blame] | 101 | |
Georg Brandl | 4d4313d | 2009-05-05 08:54:11 +0000 | [diff] [blame] | 102 | def is_skipped_module(self, module_name): |
| 103 | for pattern in self.skip: |
| 104 | if fnmatch.fnmatch(module_name, pattern): |
| 105 | return True |
| 106 | return False |
| 107 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 108 | def stop_here(self, frame): |
Neal Norwitz | 72a2b4d | 2002-05-29 00:54:38 +0000 | [diff] [blame] | 109 | # (CT) stopframe may now also be None, see dispatch_call. |
| 110 | # (CT) the former test for None is therefore removed from here. |
Georg Brandl | 4d4313d | 2009-05-05 08:54:11 +0000 | [diff] [blame] | 111 | if self.skip and \ |
| 112 | self.is_skipped_module(frame.f_globals.get('__name__')): |
| 113 | return False |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 114 | if frame is self.stopframe: |
Georg Brandl | 5077599 | 2010-08-01 19:33:15 +0000 | [diff] [blame] | 115 | if self.stoplineno == -1: |
| 116 | return False |
Benjamin Peterson | 9835394 | 2008-05-11 14:13:25 +0000 | [diff] [blame] | 117 | return frame.f_lineno >= self.stoplineno |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 118 | while frame is not None and frame is not self.stopframe: |
| 119 | if frame is self.botframe: |
Tim Peters | bc0e910 | 2002-04-04 22:55:58 +0000 | [diff] [blame] | 120 | return True |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 121 | frame = frame.f_back |
Tim Peters | bc0e910 | 2002-04-04 22:55:58 +0000 | [diff] [blame] | 122 | return False |
Guido van Rossum | d93643f | 1998-09-11 22:38:35 +0000 | [diff] [blame] | 123 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 124 | def break_here(self, frame): |
| 125 | filename = self.canonic(frame.f_code.co_filename) |
Raymond Hettinger | 54f0222 | 2002-06-01 14:18:47 +0000 | [diff] [blame] | 126 | if not filename in self.breaks: |
Tim Peters | bc0e910 | 2002-04-04 22:55:58 +0000 | [diff] [blame] | 127 | return False |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 128 | lineno = frame.f_lineno |
| 129 | if not lineno in self.breaks[filename]: |
Johannes Gijsbers | 4a9faa1 | 2004-08-30 13:29:44 +0000 | [diff] [blame] | 130 | # The line itself has no breakpoint, but maybe the line is the |
| 131 | # first line of a function with breakpoint set by function name. |
| 132 | lineno = frame.f_code.co_firstlineno |
| 133 | if not lineno in self.breaks[filename]: |
| 134 | return False |
| 135 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 136 | # flag says ok to delete temp. bp |
| 137 | (bp, flag) = effective(filename, lineno, frame) |
| 138 | if bp: |
| 139 | self.currentbp = bp.number |
| 140 | if (flag and bp.temporary): |
| 141 | self.do_clear(str(bp.number)) |
Tim Peters | bc0e910 | 2002-04-04 22:55:58 +0000 | [diff] [blame] | 142 | return True |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 143 | else: |
Tim Peters | bc0e910 | 2002-04-04 22:55:58 +0000 | [diff] [blame] | 144 | return False |
Tim Peters | 11cf605 | 2001-01-14 21:54:20 +0000 | [diff] [blame] | 145 | |
Guido van Rossum | 9cec8fb | 2001-04-08 15:05:16 +0000 | [diff] [blame] | 146 | def do_clear(self, arg): |
| 147 | raise NotImplementedError, "subclass of bdb must implement do_clear()" |
| 148 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 149 | def break_anywhere(self, frame): |
Brett Cannon | c6a30ec | 2008-08-01 01:36:47 +0000 | [diff] [blame] | 150 | return self.canonic(frame.f_code.co_filename) in self.breaks |
Tim Peters | 11cf605 | 2001-01-14 21:54:20 +0000 | [diff] [blame] | 151 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 152 | # Derived classes should override the user_* methods |
| 153 | # to gain control. |
Tim Peters | 11cf605 | 2001-01-14 21:54:20 +0000 | [diff] [blame] | 154 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 155 | def user_call(self, frame, argument_list): |
| 156 | """This method is called when there is the remote possibility |
| 157 | that we ever need to stop in this function.""" |
| 158 | pass |
Tim Peters | 11cf605 | 2001-01-14 21:54:20 +0000 | [diff] [blame] | 159 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 160 | def user_line(self, frame): |
| 161 | """This method is called when we stop or break at this line.""" |
| 162 | pass |
Tim Peters | 11cf605 | 2001-01-14 21:54:20 +0000 | [diff] [blame] | 163 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 164 | def user_return(self, frame, return_value): |
| 165 | """This method is called when a return trap is set here.""" |
| 166 | pass |
Tim Peters | 11cf605 | 2001-01-14 21:54:20 +0000 | [diff] [blame] | 167 | |
Brett Cannon | c6a30ec | 2008-08-01 01:36:47 +0000 | [diff] [blame] | 168 | def user_exception(self, frame, exc_info): |
| 169 | exc_type, exc_value, exc_traceback = exc_info |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 170 | """This method is called if an exception occurs, |
| 171 | but only if we are to stop at or just below this level.""" |
| 172 | pass |
Tim Peters | 11cf605 | 2001-01-14 21:54:20 +0000 | [diff] [blame] | 173 | |
Georg Brandl | 5077599 | 2010-08-01 19:33:15 +0000 | [diff] [blame] | 174 | def _set_stopinfo(self, stopframe, returnframe, stoplineno=0): |
Benjamin Peterson | 9835394 | 2008-05-11 14:13:25 +0000 | [diff] [blame] | 175 | self.stopframe = stopframe |
| 176 | self.returnframe = returnframe |
| 177 | self.quitting = 0 |
Georg Brandl | 5077599 | 2010-08-01 19:33:15 +0000 | [diff] [blame] | 178 | # stoplineno >= 0 means: stop at line >= the stoplineno |
| 179 | # stoplineno -1 means: don't stop at all |
Benjamin Peterson | 9835394 | 2008-05-11 14:13:25 +0000 | [diff] [blame] | 180 | self.stoplineno = stoplineno |
| 181 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 182 | # Derived classes and clients can call the following methods |
| 183 | # to affect the stepping state. |
Tim Peters | 11cf605 | 2001-01-14 21:54:20 +0000 | [diff] [blame] | 184 | |
Benjamin Peterson | 9835394 | 2008-05-11 14:13:25 +0000 | [diff] [blame] | 185 | def set_until(self, frame): #the name "until" is borrowed from gdb |
| 186 | """Stop when the line with the line no greater than the current one is |
| 187 | reached or when returning from current frame""" |
| 188 | self._set_stopinfo(frame, frame, frame.f_lineno+1) |
| 189 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 190 | def set_step(self): |
| 191 | """Stop after one line of code.""" |
Senthil Kumaran | 7f6d4e1 | 2012-05-01 10:36:28 +0800 | [diff] [blame^] | 192 | # Issue #13183: pdb skips frames after hitting a breakpoint and running |
| 193 | # step commands. |
| 194 | # Restore the trace function in the caller (that may not have been set |
| 195 | # for performance reasons) when returning from the current frame. |
| 196 | if self.frame_returning: |
| 197 | caller_frame = self.frame_returning.f_back |
| 198 | if caller_frame and not caller_frame.f_trace: |
| 199 | caller_frame.f_trace = self.trace_dispatch |
Georg Brandl | 5077599 | 2010-08-01 19:33:15 +0000 | [diff] [blame] | 200 | self._set_stopinfo(None, None) |
Tim Peters | 11cf605 | 2001-01-14 21:54:20 +0000 | [diff] [blame] | 201 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 202 | def set_next(self, frame): |
| 203 | """Stop on the next line in or below the given frame.""" |
Benjamin Peterson | 9835394 | 2008-05-11 14:13:25 +0000 | [diff] [blame] | 204 | self._set_stopinfo(frame, None) |
Tim Peters | 11cf605 | 2001-01-14 21:54:20 +0000 | [diff] [blame] | 205 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 206 | def set_return(self, frame): |
| 207 | """Stop when returning from the given frame.""" |
Benjamin Peterson | 9835394 | 2008-05-11 14:13:25 +0000 | [diff] [blame] | 208 | self._set_stopinfo(frame.f_back, frame) |
Tim Peters | 11cf605 | 2001-01-14 21:54:20 +0000 | [diff] [blame] | 209 | |
Johannes Gijsbers | 84a6c20 | 2004-11-07 11:35:30 +0000 | [diff] [blame] | 210 | def set_trace(self, frame=None): |
| 211 | """Start debugging from `frame`. |
| 212 | |
| 213 | If frame is not specified, debugging starts from caller's frame. |
| 214 | """ |
| 215 | if frame is None: |
| 216 | frame = sys._getframe().f_back |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 217 | self.reset() |
| 218 | while frame: |
| 219 | frame.f_trace = self.trace_dispatch |
| 220 | self.botframe = frame |
| 221 | frame = frame.f_back |
| 222 | self.set_step() |
| 223 | sys.settrace(self.trace_dispatch) |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 224 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 225 | def set_continue(self): |
| 226 | # Don't stop except at breakpoints or when finished |
Georg Brandl | 5077599 | 2010-08-01 19:33:15 +0000 | [diff] [blame] | 227 | self._set_stopinfo(self.botframe, None, -1) |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 228 | if not self.breaks: |
| 229 | # no breakpoints; run without debugger overhead |
| 230 | sys.settrace(None) |
Christian Tismer | 313a751 | 2002-05-28 08:04:00 +0000 | [diff] [blame] | 231 | frame = sys._getframe().f_back |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 232 | while frame and frame is not self.botframe: |
| 233 | del frame.f_trace |
| 234 | frame = frame.f_back |
Tim Peters | 11cf605 | 2001-01-14 21:54:20 +0000 | [diff] [blame] | 235 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 236 | def set_quit(self): |
| 237 | self.stopframe = self.botframe |
| 238 | self.returnframe = None |
| 239 | self.quitting = 1 |
| 240 | sys.settrace(None) |
Tim Peters | 11cf605 | 2001-01-14 21:54:20 +0000 | [diff] [blame] | 241 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 242 | # Derived classes and clients can call the following methods |
| 243 | # to manipulate breakpoints. These methods return an |
| 244 | # error message is something went wrong, None if all is well. |
| 245 | # Set_break prints out the breakpoint line and file:lineno. |
| 246 | # Call self.get_*break*() to see the breakpoints or better |
| 247 | # for bp in Breakpoint.bpbynumber: if bp: bp.bpprint(). |
Tim Peters | 11cf605 | 2001-01-14 21:54:20 +0000 | [diff] [blame] | 248 | |
Johannes Gijsbers | 4a9faa1 | 2004-08-30 13:29:44 +0000 | [diff] [blame] | 249 | def set_break(self, filename, lineno, temporary=0, cond = None, |
| 250 | funcname=None): |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 251 | filename = self.canonic(filename) |
| 252 | import linecache # Import as late as possible |
| 253 | line = linecache.getline(filename, lineno) |
| 254 | if not line: |
| 255 | return 'Line %s:%d does not exist' % (filename, |
| 256 | lineno) |
Raymond Hettinger | 54f0222 | 2002-06-01 14:18:47 +0000 | [diff] [blame] | 257 | if not filename in self.breaks: |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 258 | self.breaks[filename] = [] |
| 259 | list = self.breaks[filename] |
| 260 | if not lineno in list: |
| 261 | list.append(lineno) |
Johannes Gijsbers | 4a9faa1 | 2004-08-30 13:29:44 +0000 | [diff] [blame] | 262 | bp = Breakpoint(filename, lineno, temporary, cond, funcname) |
Guido van Rossum | d93643f | 1998-09-11 22:38:35 +0000 | [diff] [blame] | 263 | |
Senthil Kumaran | 9a5897b | 2010-11-29 12:41:03 +0000 | [diff] [blame] | 264 | def _prune_breaks(self, filename, lineno): |
| 265 | if (filename, lineno) not in Breakpoint.bplist: |
| 266 | self.breaks[filename].remove(lineno) |
| 267 | if not self.breaks[filename]: |
| 268 | del self.breaks[filename] |
| 269 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 270 | def clear_break(self, filename, lineno): |
| 271 | filename = self.canonic(filename) |
Raymond Hettinger | 54f0222 | 2002-06-01 14:18:47 +0000 | [diff] [blame] | 272 | if not filename in self.breaks: |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 273 | return 'There are no breakpoints in %s' % filename |
| 274 | if lineno not in self.breaks[filename]: |
| 275 | return 'There is no breakpoint at %s:%d' % (filename, |
| 276 | lineno) |
| 277 | # If there's only one bp in the list for that file,line |
| 278 | # pair, then remove the breaks entry |
| 279 | for bp in Breakpoint.bplist[filename, lineno][:]: |
| 280 | bp.deleteMe() |
Senthil Kumaran | 9a5897b | 2010-11-29 12:41:03 +0000 | [diff] [blame] | 281 | self._prune_breaks(filename, lineno) |
Tim Peters | 11cf605 | 2001-01-14 21:54:20 +0000 | [diff] [blame] | 282 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 283 | def clear_bpbynumber(self, arg): |
| 284 | try: |
| 285 | number = int(arg) |
| 286 | except: |
| 287 | return 'Non-numeric breakpoint number (%s)' % arg |
| 288 | try: |
| 289 | bp = Breakpoint.bpbynumber[number] |
| 290 | except IndexError: |
| 291 | return 'Breakpoint number (%d) out of range' % number |
| 292 | if not bp: |
| 293 | return 'Breakpoint (%d) already deleted' % number |
Senthil Kumaran | 9a5897b | 2010-11-29 12:41:03 +0000 | [diff] [blame] | 294 | bp.deleteMe() |
| 295 | self._prune_breaks(bp.file, bp.line) |
Guido van Rossum | 6ea27cc | 1999-01-25 20:51:34 +0000 | [diff] [blame] | 296 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 297 | def clear_all_file_breaks(self, filename): |
| 298 | filename = self.canonic(filename) |
Raymond Hettinger | 54f0222 | 2002-06-01 14:18:47 +0000 | [diff] [blame] | 299 | if not filename in self.breaks: |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 300 | return 'There are no breakpoints in %s' % filename |
| 301 | for line in self.breaks[filename]: |
| 302 | blist = Breakpoint.bplist[filename, line] |
| 303 | for bp in blist: |
| 304 | bp.deleteMe() |
| 305 | del self.breaks[filename] |
Tim Peters | 11cf605 | 2001-01-14 21:54:20 +0000 | [diff] [blame] | 306 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 307 | def clear_all_breaks(self): |
| 308 | if not self.breaks: |
| 309 | return 'There are no breakpoints' |
| 310 | for bp in Breakpoint.bpbynumber: |
| 311 | if bp: |
| 312 | bp.deleteMe() |
| 313 | self.breaks = {} |
Tim Peters | 11cf605 | 2001-01-14 21:54:20 +0000 | [diff] [blame] | 314 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 315 | def get_break(self, filename, lineno): |
| 316 | filename = self.canonic(filename) |
Raymond Hettinger | 54f0222 | 2002-06-01 14:18:47 +0000 | [diff] [blame] | 317 | return filename in self.breaks and \ |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 318 | lineno in self.breaks[filename] |
Tim Peters | 11cf605 | 2001-01-14 21:54:20 +0000 | [diff] [blame] | 319 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 320 | def get_breaks(self, filename, lineno): |
| 321 | filename = self.canonic(filename) |
Raymond Hettinger | 54f0222 | 2002-06-01 14:18:47 +0000 | [diff] [blame] | 322 | return filename in self.breaks and \ |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 323 | lineno in self.breaks[filename] and \ |
| 324 | Breakpoint.bplist[filename, lineno] or [] |
Tim Peters | 11cf605 | 2001-01-14 21:54:20 +0000 | [diff] [blame] | 325 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 326 | def get_file_breaks(self, filename): |
| 327 | filename = self.canonic(filename) |
Raymond Hettinger | 54f0222 | 2002-06-01 14:18:47 +0000 | [diff] [blame] | 328 | if filename in self.breaks: |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 329 | return self.breaks[filename] |
| 330 | else: |
| 331 | return [] |
Tim Peters | 11cf605 | 2001-01-14 21:54:20 +0000 | [diff] [blame] | 332 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 333 | def get_all_breaks(self): |
| 334 | return self.breaks |
Tim Peters | 11cf605 | 2001-01-14 21:54:20 +0000 | [diff] [blame] | 335 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 336 | # Derived classes and clients can call the following method |
| 337 | # to get a data structure representing a stack trace. |
Tim Peters | 11cf605 | 2001-01-14 21:54:20 +0000 | [diff] [blame] | 338 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 339 | def get_stack(self, f, t): |
| 340 | stack = [] |
| 341 | if t and t.tb_frame is f: |
| 342 | t = t.tb_next |
| 343 | while f is not None: |
| 344 | stack.append((f, f.f_lineno)) |
| 345 | if f is self.botframe: |
| 346 | break |
| 347 | f = f.f_back |
| 348 | stack.reverse() |
| 349 | i = max(0, len(stack) - 1) |
| 350 | while t is not None: |
| 351 | stack.append((t.tb_frame, t.tb_lineno)) |
| 352 | t = t.tb_next |
Benjamin Peterson | c18574c | 2008-10-22 21:16:34 +0000 | [diff] [blame] | 353 | if f is None: |
| 354 | i = max(0, len(stack) - 1) |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 355 | return stack, i |
Tim Peters | 11cf605 | 2001-01-14 21:54:20 +0000 | [diff] [blame] | 356 | |
| 357 | # |
| 358 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 359 | def format_stack_entry(self, frame_lineno, lprefix=': '): |
Brett Cannon | 2ee0e8e | 2008-05-23 05:03:59 +0000 | [diff] [blame] | 360 | import linecache, repr |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 361 | frame, lineno = frame_lineno |
| 362 | filename = self.canonic(frame.f_code.co_filename) |
Walter Dörwald | 70a6b49 | 2004-02-12 17:35:32 +0000 | [diff] [blame] | 363 | s = '%s(%r)' % (filename, lineno) |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 364 | if frame.f_code.co_name: |
| 365 | s = s + frame.f_code.co_name |
| 366 | else: |
| 367 | s = s + "<lambda>" |
Raymond Hettinger | 54f0222 | 2002-06-01 14:18:47 +0000 | [diff] [blame] | 368 | if '__args__' in frame.f_locals: |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 369 | args = frame.f_locals['__args__'] |
| 370 | else: |
| 371 | args = None |
| 372 | if args: |
Brett Cannon | 2ee0e8e | 2008-05-23 05:03:59 +0000 | [diff] [blame] | 373 | s = s + repr.repr(args) |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 374 | else: |
| 375 | s = s + '()' |
Raymond Hettinger | 54f0222 | 2002-06-01 14:18:47 +0000 | [diff] [blame] | 376 | if '__return__' in frame.f_locals: |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 377 | rv = frame.f_locals['__return__'] |
| 378 | s = s + '->' |
Brett Cannon | 2ee0e8e | 2008-05-23 05:03:59 +0000 | [diff] [blame] | 379 | s = s + repr.repr(rv) |
Nick Coghlan | a205347 | 2008-12-14 10:54:50 +0000 | [diff] [blame] | 380 | line = linecache.getline(filename, lineno, frame.f_globals) |
Eric S. Raymond | b49f4a4 | 2001-02-09 05:07:04 +0000 | [diff] [blame] | 381 | if line: s = s + lprefix + line.strip() |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 382 | return s |
Tim Peters | 11cf605 | 2001-01-14 21:54:20 +0000 | [diff] [blame] | 383 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 384 | # The following two methods can be called by clients to use |
| 385 | # a debugger to debug a statement, given as a string. |
Tim Peters | 11cf605 | 2001-01-14 21:54:20 +0000 | [diff] [blame] | 386 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 387 | def run(self, cmd, globals=None, locals=None): |
| 388 | if globals is None: |
| 389 | import __main__ |
| 390 | globals = __main__.__dict__ |
| 391 | if locals is None: |
| 392 | locals = globals |
| 393 | self.reset() |
| 394 | sys.settrace(self.trace_dispatch) |
| 395 | if not isinstance(cmd, types.CodeType): |
| 396 | cmd = cmd+'\n' |
| 397 | try: |
Benjamin Peterson | 41cf50d | 2008-03-28 20:56:00 +0000 | [diff] [blame] | 398 | exec cmd in globals, locals |
| 399 | except BdbQuit: |
| 400 | pass |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 401 | finally: |
| 402 | self.quitting = 1 |
| 403 | sys.settrace(None) |
Tim Peters | 11cf605 | 2001-01-14 21:54:20 +0000 | [diff] [blame] | 404 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 405 | def runeval(self, expr, globals=None, locals=None): |
| 406 | if globals is None: |
| 407 | import __main__ |
| 408 | globals = __main__.__dict__ |
| 409 | if locals is None: |
| 410 | locals = globals |
| 411 | self.reset() |
| 412 | sys.settrace(self.trace_dispatch) |
| 413 | if not isinstance(expr, types.CodeType): |
| 414 | expr = expr+'\n' |
| 415 | try: |
Benjamin Peterson | 41cf50d | 2008-03-28 20:56:00 +0000 | [diff] [blame] | 416 | return eval(expr, globals, locals) |
| 417 | except BdbQuit: |
| 418 | pass |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 419 | finally: |
| 420 | self.quitting = 1 |
| 421 | sys.settrace(None) |
Guido van Rossum | 5e38b6f | 1995-02-27 13:13:40 +0000 | [diff] [blame] | 422 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 423 | def runctx(self, cmd, globals, locals): |
| 424 | # B/W compatibility |
| 425 | self.run(cmd, globals, locals) |
Guido van Rossum | 4e16098 | 1992-09-02 20:43:20 +0000 | [diff] [blame] | 426 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 427 | # This method is more useful to debug a single function call. |
Guido van Rossum | 4e16098 | 1992-09-02 20:43:20 +0000 | [diff] [blame] | 428 | |
Raymond Hettinger | 2ef7e6c | 2004-10-24 00:32:24 +0000 | [diff] [blame] | 429 | def runcall(self, func, *args, **kwds): |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 430 | self.reset() |
| 431 | sys.settrace(self.trace_dispatch) |
| 432 | res = None |
| 433 | try: |
Benjamin Peterson | 41cf50d | 2008-03-28 20:56:00 +0000 | [diff] [blame] | 434 | res = func(*args, **kwds) |
| 435 | except BdbQuit: |
| 436 | pass |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 437 | finally: |
| 438 | self.quitting = 1 |
| 439 | sys.settrace(None) |
| 440 | return res |
Guido van Rossum | babe2bf | 1992-01-22 22:21:31 +0000 | [diff] [blame] | 441 | |
Guido van Rossum | babe2bf | 1992-01-22 22:21:31 +0000 | [diff] [blame] | 442 | |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 443 | def set_trace(): |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 444 | Bdb().set_trace() |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 445 | |
Guido van Rossum | d93643f | 1998-09-11 22:38:35 +0000 | [diff] [blame] | 446 | |
| 447 | class Breakpoint: |
| 448 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 449 | """Breakpoint class |
Guido van Rossum | d93643f | 1998-09-11 22:38:35 +0000 | [diff] [blame] | 450 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 451 | Implements temporary breakpoints, ignore counts, disabling and |
| 452 | (re)-enabling, and conditionals. |
Guido van Rossum | d93643f | 1998-09-11 22:38:35 +0000 | [diff] [blame] | 453 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 454 | Breakpoints are indexed by number through bpbynumber and by |
| 455 | the file,line tuple using bplist. The former points to a |
| 456 | single instance of class Breakpoint. The latter points to a |
| 457 | list of such instances since there may be more than one |
| 458 | breakpoint per line. |
Guido van Rossum | d93643f | 1998-09-11 22:38:35 +0000 | [diff] [blame] | 459 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 460 | """ |
Guido van Rossum | d93643f | 1998-09-11 22:38:35 +0000 | [diff] [blame] | 461 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 462 | # XXX Keeping state in the class is a mistake -- this means |
| 463 | # you cannot have more than one active Bdb instance. |
Guido van Rossum | d93643f | 1998-09-11 22:38:35 +0000 | [diff] [blame] | 464 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 465 | next = 1 # Next bp to be assigned |
| 466 | bplist = {} # indexed by (file, lineno) tuple |
| 467 | bpbynumber = [None] # Each entry is None or an instance of Bpt |
| 468 | # index 0 is unused, except for marking an |
| 469 | # effective break .... see effective() |
Guido van Rossum | d93643f | 1998-09-11 22:38:35 +0000 | [diff] [blame] | 470 | |
Johannes Gijsbers | 4a9faa1 | 2004-08-30 13:29:44 +0000 | [diff] [blame] | 471 | def __init__(self, file, line, temporary=0, cond=None, funcname=None): |
| 472 | self.funcname = funcname |
| 473 | # Needed if funcname is not None. |
| 474 | self.func_first_executable_line = None |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 475 | self.file = file # This better be in canonical form! |
| 476 | self.line = line |
| 477 | self.temporary = temporary |
| 478 | self.cond = cond |
| 479 | self.enabled = 1 |
| 480 | self.ignore = 0 |
| 481 | self.hits = 0 |
| 482 | self.number = Breakpoint.next |
| 483 | Breakpoint.next = Breakpoint.next + 1 |
| 484 | # Build the two lists |
| 485 | self.bpbynumber.append(self) |
Benjamin Peterson | 6e3dbbd | 2009-10-09 22:15:50 +0000 | [diff] [blame] | 486 | if (file, line) in self.bplist: |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 487 | self.bplist[file, line].append(self) |
| 488 | else: |
| 489 | self.bplist[file, line] = [self] |
Guido van Rossum | d93643f | 1998-09-11 22:38:35 +0000 | [diff] [blame] | 490 | |
Tim Peters | 11cf605 | 2001-01-14 21:54:20 +0000 | [diff] [blame] | 491 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 492 | def deleteMe(self): |
| 493 | index = (self.file, self.line) |
| 494 | self.bpbynumber[self.number] = None # No longer in list |
| 495 | self.bplist[index].remove(self) |
| 496 | if not self.bplist[index]: |
| 497 | # No more bp for this f:l combo |
| 498 | del self.bplist[index] |
Guido van Rossum | d93643f | 1998-09-11 22:38:35 +0000 | [diff] [blame] | 499 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 500 | def enable(self): |
| 501 | self.enabled = 1 |
Guido van Rossum | d93643f | 1998-09-11 22:38:35 +0000 | [diff] [blame] | 502 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 503 | def disable(self): |
| 504 | self.enabled = 0 |
Guido van Rossum | d93643f | 1998-09-11 22:38:35 +0000 | [diff] [blame] | 505 | |
Georg Brandl | 1956480 | 2006-05-10 17:13:20 +0000 | [diff] [blame] | 506 | def bpprint(self, out=None): |
| 507 | if out is None: |
| 508 | out = sys.stdout |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 509 | if self.temporary: |
Tim Peters | 11cf605 | 2001-01-14 21:54:20 +0000 | [diff] [blame] | 510 | disp = 'del ' |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 511 | else: |
Tim Peters | 11cf605 | 2001-01-14 21:54:20 +0000 | [diff] [blame] | 512 | disp = 'keep ' |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 513 | if self.enabled: |
Martin v. Löwis | 4b501e6 | 2006-04-15 08:41:11 +0000 | [diff] [blame] | 514 | disp = disp + 'yes ' |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 515 | else: |
Martin v. Löwis | 4b501e6 | 2006-04-15 08:41:11 +0000 | [diff] [blame] | 516 | disp = disp + 'no ' |
Georg Brandl | 1956480 | 2006-05-10 17:13:20 +0000 | [diff] [blame] | 517 | print >>out, '%-4dbreakpoint %s at %s:%d' % (self.number, disp, |
| 518 | self.file, self.line) |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 519 | if self.cond: |
Georg Brandl | 1956480 | 2006-05-10 17:13:20 +0000 | [diff] [blame] | 520 | print >>out, '\tstop only if %s' % (self.cond,) |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 521 | if self.ignore: |
Georg Brandl | 1956480 | 2006-05-10 17:13:20 +0000 | [diff] [blame] | 522 | print >>out, '\tignore next %d hits' % (self.ignore) |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 523 | if (self.hits): |
| 524 | if (self.hits > 1): ss = 's' |
| 525 | else: ss = '' |
Georg Brandl | 1956480 | 2006-05-10 17:13:20 +0000 | [diff] [blame] | 526 | print >>out, ('\tbreakpoint already hit %d time%s' % |
| 527 | (self.hits, ss)) |
Guido van Rossum | d93643f | 1998-09-11 22:38:35 +0000 | [diff] [blame] | 528 | |
| 529 | # -----------end of Breakpoint class---------- |
| 530 | |
Johannes Gijsbers | 4a9faa1 | 2004-08-30 13:29:44 +0000 | [diff] [blame] | 531 | def checkfuncname(b, frame): |
| 532 | """Check whether we should break here because of `b.funcname`.""" |
| 533 | if not b.funcname: |
| 534 | # Breakpoint was set via line number. |
| 535 | if b.line != frame.f_lineno: |
| 536 | # Breakpoint was set at a line with a def statement and the function |
| 537 | # defined is called: don't break. |
| 538 | return False |
| 539 | return True |
| 540 | |
| 541 | # Breakpoint set via function name. |
| 542 | |
| 543 | if frame.f_code.co_name != b.funcname: |
| 544 | # It's not a function call, but rather execution of def statement. |
| 545 | return False |
| 546 | |
| 547 | # We are in the right frame. |
| 548 | if not b.func_first_executable_line: |
| 549 | # The function is entered for the 1st time. |
| 550 | b.func_first_executable_line = frame.f_lineno |
| 551 | |
| 552 | if b.func_first_executable_line != frame.f_lineno: |
| 553 | # But we are not at the first line number: don't break. |
| 554 | return False |
| 555 | return True |
| 556 | |
Guido van Rossum | d93643f | 1998-09-11 22:38:35 +0000 | [diff] [blame] | 557 | # Determines if there is an effective (active) breakpoint at this |
| 558 | # line of code. Returns breakpoint number or 0 if none |
| 559 | def effective(file, line, frame): |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 560 | """Determine which breakpoint for this file:line is to be acted upon. |
Guido van Rossum | d93643f | 1998-09-11 22:38:35 +0000 | [diff] [blame] | 561 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 562 | Called only if we know there is a bpt at this |
| 563 | location. Returns breakpoint that was triggered and a flag |
| 564 | that indicates if it is ok to delete a temporary bp. |
Guido van Rossum | d93643f | 1998-09-11 22:38:35 +0000 | [diff] [blame] | 565 | |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 566 | """ |
| 567 | possibles = Breakpoint.bplist[file,line] |
| 568 | for i in range(0, len(possibles)): |
| 569 | b = possibles[i] |
| 570 | if b.enabled == 0: |
| 571 | continue |
Johannes Gijsbers | 4a9faa1 | 2004-08-30 13:29:44 +0000 | [diff] [blame] | 572 | if not checkfuncname(b, frame): |
| 573 | continue |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 574 | # Count every hit when bp is enabled |
| 575 | b.hits = b.hits + 1 |
| 576 | if not b.cond: |
| 577 | # If unconditional, and ignoring, |
| 578 | # go on to next, else break |
| 579 | if b.ignore > 0: |
| 580 | b.ignore = b.ignore -1 |
| 581 | continue |
| 582 | else: |
| 583 | # breakpoint and marker that's ok |
| 584 | # to delete if temporary |
| 585 | return (b,1) |
| 586 | else: |
| 587 | # Conditional bp. |
| 588 | # Ignore count applies only to those bpt hits where the |
| 589 | # condition evaluates to true. |
| 590 | try: |
| 591 | val = eval(b.cond, frame.f_globals, |
Tim Peters | 11cf605 | 2001-01-14 21:54:20 +0000 | [diff] [blame] | 592 | frame.f_locals) |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 593 | if val: |
| 594 | if b.ignore > 0: |
| 595 | b.ignore = b.ignore -1 |
| 596 | # continue |
| 597 | else: |
| 598 | return (b,1) |
| 599 | # else: |
| 600 | # continue |
| 601 | except: |
| 602 | # if eval fails, most conservative |
| 603 | # thing is to stop on breakpoint |
Tim Peters | 11cf605 | 2001-01-14 21:54:20 +0000 | [diff] [blame] | 604 | # regardless of ignore count. |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 605 | # Don't delete temporary, |
| 606 | # as another hint to user. |
| 607 | return (b,0) |
| 608 | return (None, None) |
Guido van Rossum | d93643f | 1998-09-11 22:38:35 +0000 | [diff] [blame] | 609 | |
Guido van Rossum | babe2bf | 1992-01-22 22:21:31 +0000 | [diff] [blame] | 610 | # -------------------- testing -------------------- |
| 611 | |
| 612 | class Tdb(Bdb): |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 613 | def user_call(self, frame, args): |
| 614 | name = frame.f_code.co_name |
| 615 | if not name: name = '???' |
| 616 | print '+++ call', name, args |
| 617 | def user_line(self, frame): |
Eric S. Raymond | b49f4a4 | 2001-02-09 05:07:04 +0000 | [diff] [blame] | 618 | import linecache |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 619 | name = frame.f_code.co_name |
| 620 | if not name: name = '???' |
| 621 | fn = self.canonic(frame.f_code.co_filename) |
Nick Coghlan | a205347 | 2008-12-14 10:54:50 +0000 | [diff] [blame] | 622 | line = linecache.getline(fn, frame.f_lineno, frame.f_globals) |
Eric S. Raymond | b49f4a4 | 2001-02-09 05:07:04 +0000 | [diff] [blame] | 623 | print '+++', fn, frame.f_lineno, name, ':', line.strip() |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 624 | def user_return(self, frame, retval): |
| 625 | print '+++ return', retval |
| 626 | def user_exception(self, frame, exc_stuff): |
| 627 | print '+++ exception', exc_stuff |
| 628 | self.set_continue() |
Guido van Rossum | babe2bf | 1992-01-22 22:21:31 +0000 | [diff] [blame] | 629 | |
| 630 | def foo(n): |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 631 | print 'foo(', n, ')' |
| 632 | x = bar(n*10) |
| 633 | print 'bar returned', x |
Guido van Rossum | babe2bf | 1992-01-22 22:21:31 +0000 | [diff] [blame] | 634 | |
| 635 | def bar(a): |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 636 | print 'bar(', a, ')' |
| 637 | return a/2 |
Guido van Rossum | babe2bf | 1992-01-22 22:21:31 +0000 | [diff] [blame] | 638 | |
| 639 | def test(): |
Guido van Rossum | 4acc25b | 2000-02-02 15:10:15 +0000 | [diff] [blame] | 640 | t = Tdb() |
| 641 | t.run('import bdb; bdb.foo(10)') |
Eric S. Raymond | b49f4a4 | 2001-02-09 05:07:04 +0000 | [diff] [blame] | 642 | |
| 643 | # end |