R/util-assert.R

In reside-ic/traduire: Internationalisation on the Fly

assert_named <- function(x, unique = FALSE, name = deparse(substitute(x))) {
  if (is.null(names(x))) {
    stop(sprintf("'%s' must be named", name), call. = FALSE)
  }
  if (unique && any(duplicated(names(x)))) {
    stop(sprintf("'%s' must have unique names", name), call. = FALSE)
  }
}

assert_scalar <- function(x, name = deparse(substitute(x))) {
  if (length(x) != 1) {
    stop(sprintf("'%s' must be a scalar", name), call. = FALSE)
  }
}

assert_character <- function(x, name = deparse(substitute(x))) {
  if (!is.character(x)) {
    stop(sprintf("'%s' must be character", name), call. = FALSE)
  }
}

assert_logical <- function(x, name = deparse(substitute(x))) {
  if (!is.logical(x)) {
    stop(sprintf("'%s' must be logical", name), call. = FALSE)
  }
}

assert_scalar_logical <- function(x, name = deparse(substitute(x))) {
  assert_scalar(x, name)
  assert_logical(x, name)
}

assert_scalar_character <- function(x, name = deparse(substitute(x))) {
  assert_scalar(x, name)
  assert_character(x, name)
}