tree-sitter tags file for Julia

julia-tree-sitter-tags.scm

; Modules
(
  (module_definition
    (identifier) @name) @definition.module
)

; Types (Structs, Abstract, Primitive)
(
  (struct_definition
    (type_head [
      (identifier) @name ; Direct identifier: struct Foo ...
      (parametrized_type_expression (identifier) @name .) ; Parametric: struct Foo{T} ...
      (binary_expression ; Inheritance: struct Foo <: Bar ... or struct Foo{T} <: Bar{T} ...
        [
          (identifier) @name
          (parametrized_type_expression (identifier) @name .)
        ]
        (operator) ; Operator (e.g., <:) - could be alias too
        (_) ; RHS (parent type) - we don't need to capture this
      )
    ])
  ) @definition.structure
)

(
  (abstract_definition
    (type_head (identifier) @name)) @definition.abstract
)

(
  (primitive_definition
    (type_head (identifier) @name)) @definition.primitive
)

; Functions
(
  (function_definition
    (signature
      (call_expression
        (identifier) @name))) @definition.function
)

; Macro-wrapped function definition
(
  (macrocall_expression
    (macro_argument_list
      (function_definition
        (signature
          [ ; Match either direct call or call inside where
            (call_expression
              (identifier) @name)
            (where_expression
              (call_expression
                (identifier) @name) @ignore)
          ]
        )
      )
    )
  ) @definition.function
)

; Short-form function definition
(
  (assignment
    (call_expression
      (identifier) @name)
    (operator)
    (_expression)
  ) @definition.function
)

; Macros
(
  (macro_definition
    (signature
      (call_expression
        (identifier) @name))) @definition.macro
)

; Constants
(
  (const_statement
    (assignment
      (identifier) @name
      "="
      (_)
    )
  ) @definition.constant
)

; Struct fields
[
  (struct_definition
    (identifier) @name @definition.field
  )
  (struct_definition
    (typed_expression (identifier) @name) @definition.field
  )
]

I can try to get this going, i.e. the PR to tree sitter, if you want me to using this file. I'd make sure that you are mentioned in the PR.