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; ----------------------------------------------------------------------------
; Literals and comments
(integer) @constant.numeric.integer
(exp_negation) @constant.numeric.integer
(exp_literal (number)) @constant.numeric.float
(char) @constant.character
[
(string)
(triple_quote_string)
] @string
(comment) @comment
; ----------------------------------------------------------------------------
; Punctuation
[
"("
")"
"{"
"}"
"["
"]"
] @punctuation.bracket
[
(comma)
";"
] @punctuation.delimiter
; ----------------------------------------------------------------------------
; Keywords, operators, includes
; This needs to come before the other "else" in
; order to be highlighted correctly
(class_instance "else" @keyword)
[
"if"
"then"
"else"
"case"
"of"
] @keyword.control.conditional
[
"import"
"module"
] @keyword.control.import
[
(operator)
(constructor_operator)
(type_operator)
(qualified_module) ; grabs the `.` (dot), ex: import System.IO
(all_names)
; `_` wildcards in if-then-else and case-of expressions,
; as well as record updates and operator sections
(wildcard)
"="
"|"
"::"
"∷"
"=>"
"⇒"
"<="
"⇐"
"->"
"→"
"<-"
"←"
"\\"
"`"
"@"
] @operator
(qualified_module (module) @constructor)
(module) @namespace
(qualified_type (module) @namespace)
(qualified_variable (module) @namespace)
(import (module) @namespace)
[
(where)
"let"
"in"
"class"
"instance"
"derive"
"foreign"
"data"
"newtype"
"type"
"as"
"hiding"
"do"
"ado"
"forall"
"∀"
"infix"
"infixl"
"infixr"
] @keyword
(type_role_declaration
"role" @keyword
role: (type_role) @keyword)
(hole) @label
; ----------------------------------------------------------------------------
; Functions and variables
(row_field (field_name) @variable.other.member)
(record_field (field_name) @variable.other.member)
(record_accessor (variable) @variable.other.member)
(exp_record_access (variable) @variable.other.member)
(signature name: (variable) @type)
(function name: (variable) @function)
(class_instance (instance_name) @function)
(derive_declaration (instance_name) @function)
; true or false
((variable) @constant.builtin.boolean
(#match? @constant.builtin.boolean "^(true|false)$"))
; The former one works for `tree-sitter highlight` but not in Helix/Kakoune.
; The latter two work in Helix (but not Kakoune) and are a good compromise between not highlighting anything at all
; as an operator and leaving it to the child nodes, and highlighting everything as an operator.
(exp_ticked (_) @operator)
(exp_ticked (exp_name (variable) @operator))
(exp_ticked (exp_name (qualified_variable (variable) @operator)))
(variable) @variable
("@" @namespace) ; "as" pattern operator, e.g. x@Constructor
; ----------------------------------------------------------------------------
; Types
(type) @type
(constructor) @constructor
|
