| """Fixer for sys.exc_{type, value, traceback} | |
| sys.exc_type -> sys.exc_info()[0] | |
| sys.exc_value -> sys.exc_info()[1] | |
| sys.exc_traceback -> sys.exc_info()[2] | |
| """ | |
| # By Jeff Balogh and Benjamin Peterson | |
| # Local imports | |
| from .. import fixer_base | |
| from ..fixer_util import Attr, Call, Name, Number, Subscript, Node, syms | |
| class FixSysExc(fixer_base.BaseFix): | |
| # This order matches the ordering of sys.exc_info(). | |
| exc_info = [u"exc_type", u"exc_value", u"exc_traceback"] | |
| BM_compatible = True | |
| PATTERN = """ | |
| power< 'sys' trailer< dot='.' attribute=(%s) > > | |
| """ % '|'.join("'%s'" % e for e in exc_info) | |
| def transform(self, node, results): | |
| sys_attr = results["attribute"][0] | |
| index = Number(self.exc_info.index(sys_attr.value)) | |
| call = Call(Name(u"exc_info"), prefix=sys_attr.prefix) | |
| attr = Attr(Name(u"sys"), call) | |
| attr[1].children[0].prefix = results["dot"].prefix | |
| attr.append(Subscript(index)) | |
| return Node(syms.power, attr, prefix=node.prefix) |