Return annotations

[RedKhan]

Hi guys, I ran into a problem where Baron interprets the "-" in the "->" of a function's return annotation as a minus instead of as part of an arrow.

def foo() -> int: return 3

baron.parser.ParsingError: Error, got an unexpected token MINUS here:
1 def foo() -<---- here
The token MINUS should be one of those: COLON

Very cool project by the way; would be nice to use something like RB in combination with support for annotations to enable some proper static analysis of functions, maybe even hijack some ideas from Haskell.

[lordmauve]

Cannot reproduce with baron==0.9:

>>> baron.parse('def foo() -> int: return 3')
[{'type': 'def', 'async': False, 'return_annotation': {'type': 'name', 'value': 'int'}, 'return_annotation_first_formatting': [{'type': 'space', 'value': ' '}], 'return_annotation_second_formatting': [{'type': 'space', 'value': ' '}], 'async_formatting': [], 'decorators': [], 'name': 'foo', 'first_formatting': [{'type': 'space', 'value': ' '}], 'second_formatting': [], 'third_formatting': [], 'fourth_formatting': [], 'fifth_formatting': [], 'sixth_formatting': [{'type': 'space', 'value': ' '}], 'arguments': [], 'value': [{'type': 'return', 'value': {'type': 'int', 'value': '3', 'section': 'number'}, 'formatting': [{'type': 'space', 'value': ' '}]}, {'type': 'endl', 'value': '\n', 'formatting': [], 'indent': ''}]}]
>>> baron.dumps(_)
'def foo() -> int: return 3\n'

[RedKhan]

uninstalling and re-installing baron to upgrade to 0.9 resolved the problem for me.