1. 16 Feb, 2021 1 commit
    • Ryan Scott's avatar
      Parse symbolic names in ANN type correctly with otycon · a04179e7
      Ryan Scott authored
      This adds a new `otycon` production to the parser that allows for type
      constructor names that are either alphanumeric (`tycon`) or symbolic
      (`tyconsym`), where the latter must be parenthesized appropriately.
      `otycon` is much like the existing `oqtycon` production, except that it does
      not permit qualified names. The parser now uses `otycon` to parse type
      constructor names in `ANN type` declarations, which fixes #19374.
      
      To make sure that all of this works, I added three test cases:
      
      * `should_compile/T19374a`: the original test case from #19374
      * `should_fail/T19374b`: a test that makes sure that an `ANN` with a qualified
        name fails to parse
      * `should_fail/T19374c`: a test that makes sure that an `ANN type` with a
        qualified name fails to parse
      a04179e7