def save_tree(tree, loc, rel, lmk, parent=None): if len(tree.productions()) == 1: # if this tree only has one production # it means that its child is a terminal (word) word = Word() word.word = tree[0] word.pos = tree.node word.parent = parent word.location = loc else: prod = Production() prod.lhs = tree.node prod.rhs = ' '.join(n.node for n in tree) prod.parent = parent prod.location = loc # some productions are related to semantic representation if prod.lhs == 'RELATION': prod.relation = rel_type(rel) if hasattr(rel, 'measurement'): prod.relation_distance_class = rel.measurement.best_distance_class prod.relation_degree_class = rel.measurement.best_degree_class elif prod.lhs == 'LANDMARK-PHRASE': prod.landmark = lmk_id(lmk) prod.landmark_class = lmk.object_class prod.landmark_orientation_relations = get_lmk_ori_rels_str(lmk) prod.landmark_color = lmk.color # next landmark phrase will need the parent landmark lmk = parent_landmark(lmk) elif prod.lhs == 'LANDMARK': # LANDMARK has the same landmark as its parent LANDMARK-PHRASE prod.landmark = parent.landmark prod.landmark_class = parent.landmark_class prod.landmark_orientation_relations = parent.landmark_orientation_relations prod.landmark_color = parent.landmark_color # save subtrees, keeping track of parent for subtree in tree: save_tree(subtree, loc, rel, lmk, prod)