"const map<EnumType, ?>" fails to parse

[emilssolmanis]

The thrift def

enum Enum {
    A = 1
}

const map<Enum, string> ConstMap = {
  Enum.A: "hurr-durr"
}

fails to parse with

    def cast(self, data):
        dct = {}
        keys = data.keys()

        for key in keys:
>           dct[self[1].cast(key)] = self[2].cast(data[key])
E           AttributeError: 'str' object has no attribute 'cast'

../thriftpy/parser/model.py:141: AttributeError

[hit9]

Similar to issue #69.

[hit9]

Will be fixed in #80

[hit9]

Closed in #80