nvim-treesitter/runtime/queries/hare/highlights.scm

; Variables
(identifier) @variable

; Types
(type) @type

(scoped_type_identifier
  (identifier)
  .
  (identifier) @type)

(struct_literal
  .
  (identifier) @type)

(builtin_type) @type.builtin

; Constants
((identifier) @constant
  (#lua-match? @constant "^[A-Z_]+$"))

; Includes
[
  "use"
  "export"
] @keyword.import

(use_statement
  (scoped_type_identifier
    (identifier) @module))

(use_statement
  (identifier) @module
  "{")

(use_statement
  .
  (identifier) @module .)

((scoped_type_identifier
  path: (_) @module)
  (#set! priority 105))

; Keywords
[
  "def"
  "let"
] @keyword

[
  "enum"
  "struct"
  "union"
  "type"
] @keyword.type

"fn" @keyword.function

[
  "defer"
  "yield"
  "return"
] @keyword.return

[
  "as"
  "is"
] @keyword.operator

; Typedefs
(type_declaration
  "type"
  (identifier) @type.definition
  .
  "=")

; Qualifiers
[
  "const"
  "static"
  "nullable"
] @keyword.modifier

; Attributes
[
  "@fini"
  "@init"
  "@test"
  "@noreturn"
  "@packed"
  (declaration_attribute)
] @attribute

; Labels
((label) @label
  (#set! priority 105))

; Functions
(function_declaration
  "fn"
  .
  (identifier) @function)

(call_expression
  .
  (identifier) @function.call)

(call_expression
  .
  (scoped_type_identifier
    .
    (identifier)
    .
    "::"
    .
    (identifier) @function.method.call))

((call_expression
  .
  (identifier) @function.builtin)
  (#any-of? @function.builtin "align" "assert" "free" "len" "offset" "size"))

(size_expression
  "size" @function.builtin)

((function_declaration
  "fn"
  .
  (identifier) @constructor)
  (#eq? @constructor "init"))

((call_expression
  .
  (identifier) @constructor)
  (#eq? @constructor "init"))

; Parameters
(parameter
  (_) @variable.parameter
  .
  ":")

; Fields
((member_expression
  "."
  (_) @variable.member)
  (#set! priority 105))

(field
  .
  (identifier) @variable.member)

(field_assignment
  .
  (identifier) @variable.member)

; Repeats
"for" @keyword.repeat

; Conditionals
[
  "if"
  "else"
  "break"
  "switch"
  "match"
  "case"
] @keyword.conditional

; Operators
[
  "+"
  "-"
  "*"
  "/"
  "%"
  "||"
  "&&"
  "^^"
  "|"
  "&"
  "^"
  "=="
  "!="
  ">"
  ">="
  "<="
  "<"
  "<<"
  ">>"
  "~"
  "!"
  "+="
  "-="
  "*="
  "/="
  "%="
  "<<="
  ">>="
  "|="
  "&="
  "^="
  "||="
  "&&="
  "^^="
  "="
  "?"
] @operator

; Punctuation
[
  "{"
  "}"
] @punctuation.bracket

[
  "["
  "]"
] @punctuation.bracket

[
  "("
  ")"
] @punctuation.bracket

[
  ".."
  "..."
  "_"
] @punctuation.special

(pointer_type
  "*" @punctuation.special)

(slice_type
  "*" @punctuation.special)

(error_type
  "!" @punctuation.special)

[
  ","
  "."
  ":"
  ";"
  "::"
  "=>"
] @punctuation.delimiter

; Literals
[
  (string)
  (raw_string)
] @string

(rune) @character

(escape_sequence) @string.escape

(number) @number

(float) @number.float

(boolean) @boolean

[
  (void)
  (null)
] @constant.builtin

; Comments
(comment) @comment @spell