Multiline infix method call in for-comprehension fails to parse

[Jaakko Paju]

Commit of tree-sitter-scala you tested this on

1abd3d9

A code sample showing the error

There are many variants that fail to parse:

for {
  _ <- ZIO.unit *>
         ZIO.unit
} yield ()

for 
  _ <- ZIO.unit *>
         ZIO.unit
yield ()

for _ <- ZIO.unit *>
   ZIO.unit
yield ()

Show the error node

This is the AST of the first example above:

(compilation_unit [0, 0] - [5, 0]
  (ERROR [0, 0] - [5, 0]
    (enumerators [1, 2] - [5, 0]
      (enumerator [1, 2] - [1, 18]
        (wildcard [1, 2] - [1, 3])
        (postfix_expression [1, 7] - [1, 18]
          (field_expression [1, 7] - [1, 15]
            value: (identifier [1, 7] - [1, 10])
            field: (identifier [1, 11] - [1, 15]))
          (operator_identifier [1, 16] - [1, 18])))
      (ERROR [2, 9] - [3, 10]
        (case_class_pattern [2, 9] - [3, 10]
          type: (stable_type_identifier [2, 9] - [2, 17]
            (identifier [2, 9] - [2, 12])
            (type_identifier [2, 13] - [2, 17]))
          (ERROR [3, 0] - [3, 7]))))))

What do you expect the tree to look like

(compilation_unit [0, 2] - [4, 0]
  (for_expression [0, 2] - [2, 12]
    enumerators: (enumerators [1, 4] - [3, 2]
      (enumerator [1, 4] - [1, 29]
        (wildcard [1, 4] - [1, 5])
        (infix_expression [1, 9] - [1, 29]
          left: (field_expression [1, 9] - [1, 17]
            value: (identifier [1, 9] - [1, 12])
            field: (identifier [1, 13] - [1, 17]))
          operator: (operator_identifier [1, 18] - [1, 20])
          right: (field_expression [2, 9] - [2, 16]
            value: (identifier [2, 9] - [2, 12])
            field: (identifier [2, 13] - [2, 17])))))
    body: (unit [3, 9] - [3, 11])))

Where are you experiencing this error?

Both Helix and tree-sitter CLI

[Vasil Markoukin]

@jpaju Thanks for reporting!
Looks like a duplicate of #358

[Jaakko Paju]

Ohh, true. I'll close this one 👍🏼