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#' @title Check if parameter requirements are met.
#'
#' @description
#' Check if a parameter value satisfies the requirements of the
#' parameter description. This only checks the `requires` expressions.
#'
#' @template arg_parset
#' @param par.vals (`list()`) \cr
#' List of parameter settings.
#' @param ids (`character()`) \cr
#' `id`s of the param.vals to check. Default is `names(par.vals)`.
#' @param use.defaults (`logical()`) \cr
#' Some requirements relay on default values of the `par.set`. Default is
#' `TRUE`, which means that if the value is not present in `par.vals` the
#' default value will be considered.
#' @return `logical(1)` \cr
#' @export
isRequiresOk = function(par.set, par.vals, ids = names(par.vals), use.defaults = TRUE) {
assertClass(par.set, "ParamSet")
assertList(par.vals, names = "named")
if (is.numeric(ids)) {
assertInteger(ids, lower = 1L, upper = length(par.vals), unique = TRUE)
} else {
assertSubset(ids, choices = names(par.vals))
}
assertFlag(use.defaults)
if (use.defaults) {
par.vals.env = insert(getDefaults(par.set), par.vals)
} else {
par.vals.env = par.vals
}
requireOks = vlapply(names(par.vals), function(par.name) {
requiresOk(par.set$pars[[par.name]], par.vals.env)
})
if (any(!requireOks)) {
# just constructing an informative error message
# FIXME Maybe use paramValueToString
par.names.failed = names(requireOks)[!requireOks]
par.vals.failed = par.vals[par.names.failed]
requires.failed = as.character(extractSubList(par.set$pars, "requires")[par.names.failed])
stopf("The following parameter settings do not meet the requirements: %s",
paste0(par.names.failed, "=", par.vals.failed, " needs ", requires.failed, collapse = ", "))
}
return(all(requireOks))
}
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