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rust highlights: clean up constructor logic (#8957)

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Enum variants and (tuple) structs are indistinguishable in general, so we
mark any PascalCase pattern or expression as a "constructor", which
covers all three.
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Rose Hudson 2024-01-02 15:38:13 +00:00 • committed by GitHub
parent 7fd266efa9
commit a680b2e409
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1 changed files with 43 additions and 21 deletions
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62
runtime/queries/rust/highlights.scm
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@ -189,6 +189,33 @@
; 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
; -------
@ -203,33 +230,28 @@
(call_expression
function: [
((identifier) @type.enum.variant
(#match? @type.enum.variant "^[A-Z]"))
((identifier) @constructor
(#match? @constructor "^[A-Z]"))
(scoped_identifier
name: ((identifier) @type.enum.variant
(#match? @type.enum.variant "^[A-Z]")))
name: ((identifier) @constructor
(#match? @constructor "^[A-Z]")))
])
; ---
; Assume that types in match arms are enums and not
; tuple structs. Same for `if let` expressions.
; PascalCase identifiers under a path which is also PascalCase
; are assumed to be constructors if they have methods or fields.
; ---
(match_pattern
(field_expression
value: (scoped_identifier
path: [
(identifier) @type
(scoped_identifier
name: (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)
])
name: (identifier) @type)
]
name: (identifier) @constructor
(#match? @type "^[A-Z]")
(#match? @constructor "^[A-Z]")))
; ---
; Other PascalCase identifiers are assumed to be structs.