def parse_net(self, args): """ Assembles a net from a list of junctions, segments, and labels. """ thisnet = Net(args) subdata = defaultdict(list) for phrase in self.stream: print phrase cmd, _sep, args = phrase.partition(' ') if cmd not in ('J', 'S', 'A', 'L', 'Q', 'B'): self.stream.push(phrase) break print args k, v = self.parsenode(cmd)(args) subdata[k].append(v) # finish building thisnet for netpt in subdata['netpoint'][:]: # using a copy so that we can modify subdata['netpoint'] inside loop if netpt.point_id not in thisnet.points: thisnet.add_point(netpt) else: # oh yeah, a net can have a point more than once, because that # makes *great* sense. for point in netpt.connected_points: thisnet.points[netpt.point_id].add_connected_point(point) for comp in netpt.connected_components: thisnet.points[netpt.point_id].add_connected_component(comp) # update subdata['netpoint'] so that ref to netpt points to the # new combined point i = subdata['netpoint'].index(netpt) subdata['netpoint'][i] = thisnet.points[netpt.point_id] # yuck, passing in-band thisnet.ibpts = subdata['netpoint'] for pt_a, pt_b in subdata['segment']: thisnet.connect((subdata['netpoint'][pt_a - 1], subdata['netpoint'][pt_b - 1])) for annot in subdata['annot']: thisnet.add_annotation(annot) if '=' in annot.value: thisnet.add_attribute(*(annot.value.split('=', 1))) return ('net', thisnet)