R/is.recordlist.R

In jsonlite: A Simple and Robust JSON Parser and Generator for R

#' @useDynLib jsonlite C_is_recordlist
is_recordlist_c <- function(x){
  .Call(C_is_recordlist, x)
}

is_recordlist_r <- function(x) {
  if (!(is.unnamedlist(x) && length(x))) {
    return(FALSE)
  }
  at_least_one_object = FALSE
  for(i in x){
    if(!(is.namedlist(i) || is.null(i))) return(FALSE)
    if(!at_least_one_object && is.namedlist(i)) at_least_one_object <- TRUE
  }
  return(at_least_one_object)
}

is.recordlist <- is_recordlist_c;

is.namedlist <- function(x) {
  isTRUE(is.list(x) && !is.null(names(x)))
}

is.unnamedlist <- function(x) {
  isTRUE(is.list(x) && is.null(names(x)))
}