(identifier) @variable (metavariable) @variable (type_identifier) @type (fragment_specifier) @type (primitive_type) @type.builtin (self) @variable.special (field_identifier) @property (shorthand_field_identifier) @property (trait_item name: (type_identifier) @type.interface) (impl_item trait: (type_identifier) @type.interface) (abstract_type trait: (type_identifier) @type.interface) (dynamic_type trait: (type_identifier) @type.interface) (trait_bounds (type_identifier) @type.interface) (call_expression function: [ (identifier) @function (scoped_identifier name: (identifier) @function) (field_expression field: (field_identifier) @function.method) ]) (generic_function function: [ (identifier) @function (scoped_identifier name: (identifier) @function) (field_expression field: (field_identifier) @function.method) ]) (function_item name: (identifier) @function.definition) (function_signature_item name: (identifier) @function.definition) (macro_invocation macro: [ (identifier) @function.special (scoped_identifier name: (identifier) @function.special) ]) (macro_invocation "!" @function.special) (macro_definition name: (identifier) @function.special.definition) ; Identifier conventions; Assume uppercase names are types/enum-constructors((identifier) @type (#match? @type "^[A-Z]")) ; Assume all-caps names are constants((identifier) @constant (#match? @constant "^_*[A-Z][A-Z\\d_]*$")) ; Ensure enum variants are highlighted correctly regardless of naming convention(enum_variant name: (identifier) @type) [ "(" ")" "{" "}" "[" "]"] @punctuation.bracket (_ . "<" @punctuation.bracket ">" @punctuation.bracket) [ "." ";" "," "::"] @punctuation.delimiter "#" @punctuation.special [ "as" "async" "const" "default" "dyn" "enum" "extern" "fn" "impl" "let" "macro_rules!" "mod" "move" "pub" "raw" "ref" "static" "struct" "for" "trait" "type" "union" "unsafe" "use" "where" (crate) (mutable_specifier) (super)] @keyword [ "await" "break" "continue" "else" "if" "in" "loop" "match" "return" "while" "yield"] @keyword.control (for_expression "for" @keyword.control) [ (string_literal) (raw_string_literal) (char_literal)] @string (escape_sequence) @string.escape [ (integer_literal) (float_literal)] @number (boolean_literal) @boolean [ (line_comment) (block_comment)] @comment [ (line_comment (doc_comment)) (block_comment (doc_comment))] @comment.doc [ "!=" "%" "%=" "&" "&=" "&&" "*" "*=" "+" "+=" "-" "-=" "->" ".." "..=" "..." "/=" ":" "<<" "<<=" "<" "<=" "=" "==" "=>" ">" ">=" ">>" ">>=" "@" "^" "^=" "|" "|=" "||" "?"] @operator ; Avoid highlighting these as operators when used in doc comments.(unary_expression "!" @operator) operator: "/" @operator (lifetime "'" @lifetime (identifier) @lifetime) (parameter (identifier) @variable.parameter) (attribute_item (attribute [ (identifier) @attribute (scoped_identifier name: (identifier) @attribute) (token_tree (identifier) @attribute (#match? @attribute "^[a-z\\d_]*$")) (token_tree (identifier) @none "::" (#match? @none "^[a-z\\d_]*$")) ])) (inner_attribute_item (attribute [ (identifier) @attribute (scoped_identifier name: (identifier) @attribute) (token_tree (identifier) @attribute (#match? @attribute "^[a-z\\d_]*$")) (token_tree (identifier) @none "::" (#match? @none "^[a-z\\d_]*$")) ]))
(identifier) @variable
(metavariable) @variable
(type_identifier) @type
(fragment_specifier) @type
(primitive_type) @type.builtin
(self) @variable.special
(field_identifier) @property
(shorthand_field_identifier) @property
(trait_item
name: (type_identifier) @type.interface)
(impl_item
trait: (type_identifier) @type.interface)
(abstract_type
trait: (type_identifier) @type.interface)
(dynamic_type
trait: (type_identifier) @type.interface)
(trait_bounds
(type_identifier) @type.interface)
(call_expression
function: [
(identifier) @function
(scoped_identifier
name: (identifier) @function)
(field_expression
field: (field_identifier) @function.method)
])
(generic_function
function: [
(identifier) @function
(scoped_identifier
name: (identifier) @function)
(field_expression
field: (field_identifier) @function.method)
])
(function_item
name: (identifier) @function.definition)
(function_signature_item
name: (identifier) @function.definition)
(macro_invocation
macro: [
(identifier) @function.special
(scoped_identifier
name: (identifier) @function.special)
])
(macro_invocation
"!" @function.special)
(macro_definition
name: (identifier) @function.special.definition)
; Identifier conventions
; Assume uppercase names are types/enum-constructors
((identifier) @type
(#match? @type "^[A-Z]"))
; Assume all-caps names are constants
((identifier) @constant
(#match? @constant "^_*[A-Z][A-Z\\d_]*$"))
; Ensure enum variants are highlighted correctly regardless of naming convention
(enum_variant
name: (identifier) @type)
[
"("
")"
"{"
"}"
"["
"]"
] @punctuation.bracket
(_
.
"<" @punctuation.bracket
">" @punctuation.bracket)
[
"."
";"
","
"::"
] @punctuation.delimiter
"#" @punctuation.special
[
"as"
"async"
"const"
"default"
"dyn"
"enum"
"extern"
"fn"
"impl"
"let"
"macro_rules!"
"mod"
"move"
"pub"
"raw"
"ref"
"static"
"struct"
"for"
"trait"
"type"
"union"
"unsafe"
"use"
"where"
(crate)
(mutable_specifier)
(super)
] @keyword
[
"await"
"break"
"continue"
"else"
"if"
"in"
"loop"
"match"
"return"
"while"
"yield"
] @keyword.control
(for_expression
"for" @keyword.control)
[
(string_literal)
(raw_string_literal)
(char_literal)
] @string
(escape_sequence) @string.escape
[
(integer_literal)
(float_literal)
] @number
(boolean_literal) @boolean
[
(line_comment)
(block_comment)
] @comment
[
(line_comment
(doc_comment))
(block_comment
(doc_comment))
] @comment.doc
[
"!="
"%"
"%="
"&"
"&="
"&&"
"*"
"*="
"+"
"+="
"-"
"-="
"->"
".."
"..="
"..."
"/="
":"
"<<"
"<<="
"<"
"<="
"="
"=="
"=>"
">"
">="
">>"
">>="
"@"
"^"
"^="
"|"
"|="
"||"
"?"
] @operator
; Avoid highlighting these as operators when used in doc comments.
(unary_expression
"!" @operator)
operator: "/" @operator
(lifetime
"'" @lifetime
(identifier) @lifetime)
(parameter
(identifier) @variable.parameter)
(attribute_item
(attribute
[
(identifier) @attribute
(scoped_identifier
name: (identifier) @attribute)
(token_tree
(identifier) @attribute
(#match? @attribute "^[a-z\\d_]*$"))
(token_tree
(identifier) @none
"::"
(#match? @none "^[a-z\\d_]*$"))
]))
(inner_attribute_item
(attribute
[
(identifier) @attribute
(scoped_identifier
name: (identifier) @attribute)
(token_tree
(identifier) @attribute
(#match? @attribute "^[a-z\\d_]*$"))
(token_tree
(identifier) @none
"::"
(#match? @none "^[a-z\\d_]*$"))
]))