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rotl_is_flag <- function(x) {
identical(length(x), 1L) &&
rlang::is_bare_logical(x) &&
!is.na(x)
}
rotl_is_string <- function(x) {
identical(length(x), 1L) &&
rlang::is_bare_character(x) &&
!is.na(x)
}
check_factory <- function(f, x, arg_name, msg) {
if (f(x)) {
return(TRUE)
}
stop(
paste0(
"Argument ",
sQuote(arg_name),
msg
),
call. = FALSE
)
}
check_is_flag <- function(x) {
arg_name <- deparse(substitute(x))
check_factory(
rotl_is_flag,
x,
arg_name,
" is not a flag (a length one logical vector)."
)
}
check_is_string <- function(x) {
arg_name <- deparse(substitute(x))
check_factory(
rotl_is_string,
x,
arg_name,
" is not a string (a length one character vector)."
)
}
|
