1; Comments
  2(module_comment) @comment
  3(statement_comment) @comment
  4(comment) @comment
  5
  6; Constants
  7(constant
  8  name: (identifier) @constant)
  9
 10; Variables
 11(identifier) @variable
 12(discard) @comment.unused
 13
 14; Modules
 15(module) @module
 16(import alias: (identifier) @module)
 17(remote_type_identifier
 18  module: (identifier) @module)
 19(remote_constructor_name
 20  module: (identifier) @module)
 21((field_access
 22  record: (identifier) @module
 23  field: (label) @function)
 24 (#is-not? local))
 25
 26; Functions
 27(unqualified_import (identifier) @function)
 28(unqualified_import "type" (type_identifier) @type)
 29(unqualified_import (type_identifier) @constructor)
 30(function
 31  name: (identifier) @function)
 32(external_function
 33  name: (identifier) @function)
 34(function_parameter
 35  name: (identifier) @variable.parameter)
 36((function_call
 37   function: (identifier) @function)
 38 (#is-not? local))
 39((binary_expression
 40   operator: "|>"
 41   right: (identifier) @function)
 42 (#is-not? local))
 43
 44; "Properties"
 45; Assumed to be intended to refer to a name for a field; something that comes
 46; before ":" or after "."
 47; e.g. record field names, tuple indices, names for named arguments, etc
 48(label) @property
 49(tuple_access
 50  index: (integer) @property)
 51
 52; Attributes
 53(attribute
 54  "@" @attribute
 55  name: (identifier) @attribute)
 56
 57(attribute_value (identifier) @constant)
 58
 59; Type names
 60(remote_type_identifier) @type
 61(type_identifier) @type
 62
 63; Data constructors
 64(constructor_name) @constructor
 65
 66; Literals
 67(string) @string
 68((escape_sequence) @warning
 69 ; Deprecated in v0.33.0-rc2:
 70 (#eq? @warning "\\e"))
 71(escape_sequence) @string.escape
 72(bit_string_segment_option) @function.builtin
 73(integer) @number
 74(float) @number
 75
 76; Reserved identifiers
 77; TODO: when tree-sitter supports `#any-of?` in the Rust bindings,
 78; refactor this to use `#any-of?` rather than `#match?`
 79((identifier) @warning
 80 (#match? @warning "^(auto|delegate|derive|else|implement|macro|test|echo)$"))
 81
 82; Keywords
 83[
 84  (visibility_modifier) ; "pub"
 85  (opacity_modifier) ; "opaque"
 86  "as"
 87  "assert"
 88  "case"
 89  "const"
 90  ; DEPRECATED: 'external' was removed in v0.30.
 91  "external"
 92  "fn"
 93  "if"
 94  "import"
 95  "let"
 96  "panic"
 97  "todo"
 98  "type"
 99  "use"
100] @keyword
101
102; Operators
103(binary_expression
104  operator: _ @operator)
105(boolean_negation "!" @operator)
106(integer_negation "-" @operator)
107
108; Punctuation
109[
110  "("
111  ")"
112  "["
113  "]"
114  "{"
115  "}"
116  "<<"
117  ">>"
118] @punctuation.bracket
119[
120  "."
121  ","
122  ;; Controversial -- maybe some are operators?
123  ":"
124  "#"
125  "="
126  "->"
127  ".."
128  "-"
129  "<-"
130] @punctuation.delimiter