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; CREDITS @stumash (stuart.mashaal@gmail.com)
;; variables
((identifier) @variable.builtin
(#match? @variable.builtin "^this$"))
(interpolation) @none
; Assume other uppercase names constants.
; NOTE: In order to distinguish constants we highlight
; all the identifiers that are uppercased. But this solution
; is not suitable for all occurrences e.g. it will highlight
; an uppercased method as a constant if used with no params.
; Introducing highlighting for those specific cases, is probably
; best way to resolve the issue.
((identifier) @constant (#match? @constant "^[A-Z]"))
;; types
(type_identifier) @type
(class_definition
name: (identifier) @type)
(object_definition
name: (identifier) @type)
(trait_definition
name: (identifier) @type)
(type_definition
name: (type_identifier) @type)
; method definition
(class_definition
body: (template_body
(function_definition
name: (identifier) @function.method)))
(object_definition
body: (template_body
(function_definition
name: (identifier) @function.method)))
(trait_definition
body: (template_body
(function_definition
name: (identifier) @function.method)))
; imports
(import_declaration
path: (identifier) @namespace)
((stable_identifier (identifier) @namespace))
((import_declaration
path: (identifier) @type) (#match? @type "^[A-Z]"))
((stable_identifier (identifier) @type) (#match? @type "^[A-Z]"))
((import_selectors (identifier) @type) (#match? @type "^[A-Z]"))
; method invocation
(call_expression
function: (identifier) @function)
(call_expression
function: (field_expression
field: (identifier) @function.method))
((call_expression
function: (identifier) @variable.other.member)
(#match? @variable.other.member "^[A-Z]"))
(generic_function
function: (identifier) @function)
(
(identifier) @function.builtin
(#match? @function.builtin "^super$")
)
; function definitions
(function_definition
name: (identifier) @function)
(parameter
name: (identifier) @variable.parameter)
; expressions
(field_expression field: (identifier) @variable.other.member)
(field_expression value: (identifier) @type
(#match? @type "^[A-Z]"))
(infix_expression operator: (identifier) @operator)
(infix_expression operator: (operator_identifier) @operator)
(infix_type operator: (operator_identifier) @operator)
(infix_type operator: (operator_identifier) @operator)
; literals
(boolean_literal) @constant.builtin.boolean
(integer_literal) @constant.numeric.integer
(floating_point_literal) @constant.numeric.float
(symbol_literal) @string.special.symbol
[
(string)
(character_literal)
(interpolated_string_expression)
] @string
(interpolation "$" @punctuation.special)
;; keywords
[
"abstract"
"case"
"class"
"extends"
"final"
"finally"
;; `forSome` existential types not implemented yet
"implicit"
"lazy"
;; `macro` not implemented yet
"object"
"override"
"package"
"private"
"protected"
"sealed"
"trait"
"type"
"val"
"var"
"with"
] @keyword
(null_literal) @constant.builtin
(wildcard) @keyword
;; special keywords
"new" @keyword.operator
[
"else"
"if"
"match"
"try"
"catch"
"throw"
] @keyword.control.conditional
[
"("
")"
"["
"]"
"{"
"}"
] @punctuation.bracket
[
"."
","
] @punctuation.delimiter
[
"do"
"for"
"while"
"yield"
] @keyword.control.repeat
"def" @keyword.function
[
"=>"
"<-"
"@"
] @keyword.operator
"import" @keyword.control.import
"return" @keyword.control.return
(comment) @comment
;; `case` is a conditional keyword in case_block
(case_block
(case_clause ("case") @keyword.control.conditional))
(identifier) @variable
|
