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It contains tuples of the form: # # (file name, line number of function def, function name) # self._stack = [] self._append = self._stack.append self._pop = self._stack.pop def close(self): self._reader.close() def fileno(self): """Return the file descriptor of the log reader's log file.""" return self._reader.fileno() def addinfo(self, key, value): """This method is called for each additional ADD_INFO record. This can be overridden by applications that want to receive these events. The default implementation does not need to be called by alternate implementations. The initial set of ADD_INFO records do not pass through this mechanism; this is only needed to receive notification when new values are added. Subclasses can inspect self._info after calling LogReader.__init__(). """ pass def get_filename(self, fileno): try: return self._filemap[fileno] except KeyError: raise ValueError, "unknown fileno" def get_filenames(self): return self._filemap.values() def get_fileno(self, filename): filename = os.path.normcase(os.path.normpath(filename)) for fileno, name in self._filemap.items(): if name == filename: return fileno raise ValueError, "unknown filename" def get_funcname(self, fileno, lineno): try: return self._funcmap[(fileno, lineno)] except KeyError: raise ValueError, "unknown function location" # Iteration support: # This adds an optional (& ignored) parameter to next() so that the # same bound method can be used as the __getitem__() method -- this # avoids using an additional method call which kills the performance. def next(self, index=0): while 1: # This call may raise StopIteration: what, tdelta, fileno, lineno = self._nextitem() # handle the most common cases first if what == WHAT_ENTER: filename, funcname = self._decode_location(fileno, lineno) t = (filename, lineno, funcname) self._append(t) return what, t, tdelta if what == WHAT_EXIT: try: return what, self._pop(), tdelta except IndexError: raise StopIteration if what == WHAT_LINENO: filename, firstlineno, funcname = self._stack[-1] return what, (filename, lineno, funcname), tdelta if what == WHAT_DEFINE_FILE: filename = os.path.normcase(os.path.normpath(tdelta)) self._filemap[fileno] = filename elif what == WHAT_DEFINE_FUNC: filename = self._filemap[fileno] self._funcmap[(fileno, lineno)] = (filename, tdelta) elif what == WHAT_ADD_INFO: # value already loaded into self.info; call the # overridable addinfo() handler so higher-level code # can pick up the new value if tdelta == 'current-directory': self.cwd = lineno self.addinfo(tdelta, lineno) else: raise ValueError, "unknown event type" def __iter__(self): return self # # helpers # def _decode_location(self, fileno, lineno): try: return self._funcmap[(fileno, lineno)] except KeyError: # # This should only be needed when the log file does not # contain all the DEFINE_FUNC records needed to allow the # function name to be retrieved from the log file. # if self._loadfile(fileno): filename = funcname = None try: filename, funcname = self._funcmap[(fileno, lineno)] except KeyError: filename = self._filemap.get(fileno) funcname = None self._funcmap[(fileno, lineno)] = (filename, funcname) return filename, funcname def _loadfile(self, fileno): try: filename = self._filemap[fileno] except KeyError: print "Could not identify fileId", fileno return 1 if filename is None: return 1 absname = os.path.normcase(os.path.join(self.cwd, filename)) try: fp = open(absname) except IOError: return st = parser.suite(fp.read()) fp.close() # Scan the tree looking for def and lambda nodes, filling in # self._funcmap with all the available information. funcdef = symbol.funcdef lambdef = symbol.lambdef stack = [st.totuple(1)] while stack: tree = stack.pop() try: sym = tree[0] except (IndexError, TypeError): continue if sym == funcdef: self._funcmap[(fileno, tree[2][2])] = filename, tree[2][1] elif sym == lambdef: self._funcmap[(fileno, tree[1][2])] = filename, "" stack.extend(list(tree[1:]))