1(type_identifier) @type
  2(primitive_type) @type.builtin
  3(self) @variable.special
  4(field_identifier) @property
  5
  6(trait_item name: (type_identifier) @type.interface)
  7(impl_item trait: (type_identifier) @type.interface)
  8(abstract_type trait: (type_identifier) @type.interface)
  9(dynamic_type trait: (type_identifier) @type.interface)
 10(trait_bounds (type_identifier) @type.interface)
 11
 12(call_expression
 13  function: [
 14    (identifier) @function
 15    (scoped_identifier
 16      name: (identifier) @function)
 17    (field_expression
 18      field: (field_identifier) @function.method)
 19  ])
 20
 21(generic_function
 22  function: [
 23    (identifier) @function
 24    (scoped_identifier
 25      name: (identifier) @function)
 26    (field_expression
 27      field: (field_identifier) @function.method)
 28  ])
 29
 30(function_item name: (identifier) @function.definition)
 31(function_signature_item name: (identifier) @function.definition)
 32
 33(macro_invocation
 34  macro: [
 35    (identifier) @function.special
 36    (scoped_identifier
 37      name: (identifier) @function.special)
 38  ])
 39
 40(macro_definition
 41  name: (identifier) @function.special.definition)
 42
 43; Identifier conventions
 44
 45; Assume uppercase names are types/enum-constructors
 46((identifier) @type
 47 (#match? @type "^[A-Z]"))
 48
 49; Assume all-caps names are constants
 50((identifier) @constant
 51 (#match? @constant "^_*[A-Z][A-Z\\d_]*$"))
 52
 53[
 54  "("
 55  ")"
 56  "{"
 57  "}"
 58  "["
 59  "]"
 60] @punctuation.bracket
 61
 62(_
 63  .
 64  "<" @punctuation.bracket
 65  ">" @punctuation.bracket)
 66
 67[
 68  ";"
 69  ","
 70  "::"
 71] @punctuation.delimiter
 72
 73[
 74  "#"
 75] @punctuation.special
 76
 77[
 78  "as"
 79  "async"
 80  "await"
 81  "break"
 82  "const"
 83  "continue"
 84  "default"
 85  "dyn"
 86  "else"
 87  "enum"
 88  "extern"
 89  "fn"
 90  "for"
 91  "if"
 92  "impl"
 93  "in"
 94  "let"
 95  "loop"
 96  "macro_rules!"
 97  "match"
 98  "mod"
 99  "move"
100  "pub"
101  "ref"
102  "return"
103  "static"
104  "struct"
105  "trait"
106  "type"
107  "union"
108  "unsafe"
109  "use"
110  "where"
111  "while"
112  "yield"
113  (crate)
114  (mutable_specifier)
115  (super)
116] @keyword
117
118[
119  (string_literal)
120  (raw_string_literal)
121  (char_literal)
122] @string
123
124[
125  (integer_literal)
126  (float_literal)
127] @number
128
129(boolean_literal) @constant
130
131[
132  (line_comment)
133  (block_comment)
134] @comment
135
136[
137  (line_comment (doc_comment))
138  (block_comment (doc_comment))
139] @comment.doc
140
141[
142  "!="
143  "%"
144  "%="
145  "&"
146  "&="
147  "&&"
148  "*"
149  "*="
150  "*"
151  "+"
152  "+="
153  ","
154  "-"
155  "-="
156  "->"
157  "."
158  ".."
159  "..="
160  "..."
161  "/="
162  ":"
163  ";"
164  "<<"
165  "<<="
166  "<"
167  "<="
168  "="
169  "=="
170  "=>"
171  ">"
172  ">="
173  ">>"
174  ">>="
175  "@"
176  "^"
177  "^="
178  "|"
179  "|="
180  "||"
181  "?"
182] @operator
183
184; Avoid highlighting these as operators when used in doc comments.
185(unary_expression "!" @operator)
186operator: "/" @operator
187
188(lifetime) @lifetime
189
190(parameter (identifier) @variable.parameter)
191
192(attribute_item) @attribute
193(inner_attribute_item) @attribute