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helix/runtime/queries/rust/highlights.scm

462 lines
7.5 KiB
Scheme

; -------
; Tree-Sitter doesn't allow overrides in regards to captures,
; though it is possible to affect the child node of a captured
; node. Thus, the approach here is to flip the order so that
; overrides are unnecessary.
; -------
; -------
; Types
; -------
(type_parameters
(type_identifier) @type.parameter)
(constrained_type_parameter
left: (type_identifier) @type.parameter)
(optional_type_parameter
name: (type_identifier) @type.parameter)
; ---
; Primitives
; ---
(escape_sequence) @constant.character.escape
(primitive_type) @type.builtin
(boolean_literal) @constant.builtin.boolean
(integer_literal) @constant.numeric.integer
(float_literal) @constant.numeric.float
(char_literal) @constant.character
[
(string_literal)
(raw_string_literal)
] @string
(line_comment (doc_comment)) @comment.documentation
(block_comment (doc_comment)) @comment.block.documentation
[
(line_comment)
(block_comment)
] @comment
; ---
; Extraneous
; ---
(self) @variable.builtin
(enum_variant (identifier) @type.enum.variant)
(field_initializer
(field_identifier) @variable.other.member)
(shorthand_field_initializer
(identifier) @variable.other.member)
(shorthand_field_identifier) @variable.other.member
(lifetime
"'" @label
(identifier) @label)
(label
"'" @label
(identifier) @label)
; ---
; Prelude
; ---
((identifier) @type.enum.variant.builtin
(#any-of? @type.enum.variant.builtin "Some" "None" "Ok" "Err"))
((type_identifier) @type.builtin
(#any-of?
@type.builtin
"Send"
"Sized"
"Sync"
"Unpin"
"Drop"
"Fn"
"FnMut"
"FnOnce"
"AsMut"
"AsRef"
"From"
"Into"
"DoubleEndedIterator"
"ExactSizeIterator"
"Extend"
"IntoIterator"
"Iterator"
"Option"
"Result"
"Clone"
"Copy"
"Debug"
"Default"
"Eq"
"Hash"
"Ord"
"PartialEq"
"PartialOrd"
"ToOwned"
"Box"
"String"
"ToString"
"Vec"
"FromIterator"
"TryFrom"
"TryInto"))
; ---
; Punctuation
; ---
[
"::"
"."
";"
","
] @punctuation.delimiter
[
"("
")"
"["
"]"
"{"
"}"
"#"
] @punctuation.bracket
(type_arguments
[
"<"
">"
] @punctuation.bracket)
(type_parameters
[
"<"
">"
] @punctuation.bracket)
(closure_parameters
"|" @punctuation.bracket)
; ---
; Variables
; ---
(let_declaration
pattern: [
((identifier) @variable)
((tuple_pattern
(identifier) @variable))
])
; It needs to be anonymous to not conflict with `call_expression` further below.
(_
value: (field_expression
value: (identifier)? @variable
field: (field_identifier) @variable.other.member))
(parameter
pattern: (identifier) @variable.parameter)
(closure_parameters
(identifier) @variable.parameter)
; -------
; Keywords
; -------
(for_expression
"for" @keyword.control.repeat)
((identifier) @keyword.control
(#match? @keyword.control "^yield$"))
"in" @keyword.control
[
"match"
"if"
"else"
"try"
] @keyword.control.conditional
[
"while"
"loop"
] @keyword.control.repeat
[
"break"
"continue"
"return"
"await"
] @keyword.control.return
"use" @keyword.control.import
(mod_item "mod" @keyword.control.import !body)
(use_as_clause "as" @keyword.control.import)
(type_cast_expression "as" @keyword.operator)
[
(crate)
(super)
"as"
"pub"
"mod"
"extern"
"impl"
"where"
"trait"
"for"
"default"
"async"
] @keyword
[
"struct"
"enum"
"union"
"type"
] @keyword.storage.type
"let" @keyword.storage
"fn" @keyword.function
"unsafe" @keyword.special
"macro_rules!" @function.macro
(mutable_specifier) @keyword.storage.modifier.mut
(reference_type "&" @keyword.storage.modifier.ref)
(self_parameter "&" @keyword.storage.modifier.ref)
[
"static"
"const"
"ref"
"move"
"dyn"
] @keyword.storage.modifier
; TODO: variable.mut to highlight mutable identifiers via locals.scm
; -------
; Constructors
; -------
; TODO: this is largely guesswork, remove it once we get actual info from locals.scm or r-a
(struct_expression
name: (type_identifier) @constructor)
(tuple_struct_pattern
type: [
(identifier) @constructor
(scoped_identifier
name: (identifier) @constructor)
])
(struct_pattern
type: [
((type_identifier) @constructor)
(scoped_type_identifier
name: (type_identifier) @constructor)
])
(match_pattern
((identifier) @constructor) (#match? @constructor "^[A-Z]"))
(or_pattern
((identifier) @constructor)
((identifier) @constructor)
(#match? @constructor "^[A-Z]"))
; -------
; Guess Other Types
; -------
((identifier) @constant
(#match? @constant "^[A-Z][A-Z\\d_]*$"))
; ---
; PascalCase identifiers in call_expressions (e.g. `Ok()`)
; are assumed to be enum constructors.
; ---
(call_expression
function: [
((identifier) @constructor
(#match? @constructor "^[A-Z]"))
(scoped_identifier
name: ((identifier) @constructor
(#match? @constructor "^[A-Z]")))
])
; ---
; PascalCase identifiers under a path which is also PascalCase
; are assumed to be constructors if they have methods or fields.
; ---
(field_expression
value: (scoped_identifier
path: [
(identifier) @type
(scoped_identifier
name: (identifier) @type)
]
name: (identifier) @constructor
(#match? @type "^[A-Z]")
(#match? @constructor "^[A-Z]")))
; ---
; Other PascalCase identifiers are assumed to be structs.
; ---
((identifier) @type
(#match? @type "^[A-Z]"))
; -------
; Functions
; -------
(call_expression
function: [
((identifier) @function)
(scoped_identifier
name: (identifier) @function)
(field_expression
field: (field_identifier) @function)
])
(generic_function
function: [
((identifier) @function)
(scoped_identifier
name: (identifier) @function)
(field_expression
field: (field_identifier) @function.method)
])
(function_item
name: (identifier) @function)
(function_signature_item
name: (identifier) @function)
; ---
; Macros
; ---
(attribute
(identifier) @special
arguments: (token_tree (identifier) @type)
(#eq? @special "derive")
)
(attribute
(identifier) @function.macro)
(attribute
[
(identifier) @function.macro
(scoped_identifier
name: (identifier) @function.macro)
]
(token_tree (identifier) @function.macro)?)
(inner_attribute_item) @attribute
(macro_definition
name: (identifier) @function.macro)
(macro_invocation
macro: [
((identifier) @function.macro)
(scoped_identifier
name: (identifier) @function.macro)
]
"!" @function.macro)
(metavariable) @variable.parameter
(fragment_specifier) @type
; -------
; Operators
; -------
[
"*"
"'"
"->"
"=>"
"<="
"="
"=="
"!"
"!="
"%"
"%="
"&"
"&="
"&&"
"|"
"|="
"||"
"^"
"^="
"*"
"*="
"-"
"-="
"+"
"+="
"/"
"/="
">"
"<"
">="
">>"
"<<"
">>="
"<<="
"@"
".."
"..="
"'"
] @operator
; -------
; Paths
; -------
(use_declaration
argument: (identifier) @namespace)
(use_wildcard
(identifier) @namespace)
(extern_crate_declaration
name: (identifier) @namespace
alias: (identifier)? @namespace)
(mod_item
name: (identifier) @namespace)
(scoped_use_list
path: (identifier)? @namespace)
(use_list
(identifier) @namespace)
(use_as_clause
path: (identifier)? @namespace
alias: (identifier) @namespace)
; ---
; Remaining Paths
; ---
(scoped_identifier
path: (identifier)? @namespace
name: (identifier) @namespace)
(scoped_type_identifier
path: (identifier) @namespace)
; -------
; Remaining Identifiers
; -------
"?" @special
(type_identifier) @type
(identifier) @variable
(field_identifier) @variable.other.member