helix-mods/runtime/queries/rust/injections.scm

([(line_comment) (block_comment)] @injection.content
 (#set! injection.language "comment"))

((macro_invocation
  (token_tree) @injection.content)
 (#set! injection.language "rust")
 (#set! injection.include-children))

((macro_rule
  (token_tree) @injection.content)
 (#set! injection.language "rust")
 (#set! injection.include-children))

(call_expression
  function: (scoped_identifier
    path: (identifier) @_regex (#eq? @_regex "Regex")
    name: (identifier) @_new (#eq? @_new "new"))
  arguments: (arguments (raw_string_literal) @injection.content)
  (#set! injection.language "regex"))

(call_expression
  function: (scoped_identifier
    path: (scoped_identifier (identifier) @_regex (#eq? @_regex "Regex") .)
    name: (identifier) @_new (#eq? @_new "new"))
  arguments: (arguments (raw_string_literal) @injection.content)
  (#set! injection.language "regex"))

; Highlight SQL in `sqlx::query!()`
(macro_invocation
  macro: (scoped_identifier
    path: (identifier) @_sqlx (#eq? @_sqlx "sqlx")
    name: (identifier) @_query (#eq? @_query "query"))
  (token_tree
    ; Only the first argument is SQL
    .
    [(string_literal) (raw_string_literal)] @injection.content
  )
  (#set! injection.language "sql"))

; Highlight SQL in `sqlx::query_as!()`
(macro_invocation
  macro: (scoped_identifier
    path: (identifier) @_sqlx (#eq? @_sqlx "sqlx")
    name: (identifier) @_query_as (#eq? @_query_as "query_as"))
  (token_tree
    ; Only the second argument is SQL
    .
    ; Allow anything as the first argument in case the user has lower case type
    ; names for some reason
    (_)
    [(string_literal) (raw_string_literal)] @injection.content
  )
  (#set! injection.language "sql"))