Nothing
#' Require usage of `anyNA(x)` over `any(is.na(x))`
#'
#' [anyNA()] exists as a replacement for `any(is.na(x))` which is more efficient
#' for simple objects, and is at worst equally efficient.
#' Therefore, it should be used in all situations instead of the latter.
#'
#' @examples
#' # will produce lints
#' lint(
#' text = "any(is.na(x), na.rm = TRUE)",
#' linters = any_is_na_linter()
#' )
#'
#' lint(
#' text = "any(is.na(foo(x)))",
#' linters = any_is_na_linter()
#' )
#'
#' # okay
#' lint(
#' text = "anyNA(x)",
#' linters = any_is_na_linter()
#' )
#'
#' lint(
#' text = "anyNA(foo(x))",
#' linters = any_is_na_linter()
#' )
#'
#' lint(
#' text = "any(!is.na(x), na.rm = TRUE)",
#' linters = any_is_na_linter()
#' )
#'
#' @evalRd rd_tags("any_is_na_linter")
#' @seealso [linters] for a complete list of linters available in lintr.
#' @export
any_is_na_linter <- function() {
xpath <- "
//SYMBOL_FUNCTION_CALL[text() = 'any']
/parent::expr
/following-sibling::expr[1][expr[1][SYMBOL_FUNCTION_CALL[text() = 'is.na']]]
/parent::expr[
count(expr) = 2
or (count(expr) = 3 and SYMBOL_SUB[text() = 'na.rm'])
]
"
Linter(function(source_expression) {
if (!is_lint_level(source_expression, "expression")) {
return(list())
}
xml <- source_expression$xml_parsed_content
bad_expr <- xml_find_all(xml, xpath)
xml_nodes_to_lints(
bad_expr,
source_expression = source_expression,
lint_message = "anyNA(x) is better than any(is.na(x)).",
type = "warning"
)
})
}
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