newly exported functions used for external packages

DESCRIPTION

@@ -31,7 +31,7 @@ Imports:
     prettyunits,
     vctrs (>= 0.2.0)
 Roxygen: list(markdown = TRUE)
-RoxygenNote: 7.0.1.9000
+RoxygenNote: 7.0.2.9000
 Suggests: 
     testthat,
     knitr,

NAMESPACE

@@ -90,6 +90,7 @@ export(C5.0_train)
 export(add_rowindex)
 export(boost_tree)
 export(check_empty_ellipse)
+export(check_final_param)
 export(control_parsnip)
 export(decision_tree)
 export(fit)
@@ -103,6 +104,7 @@ export(get_from_env)
 export(get_model_env)
 export(get_pred_type)
 export(has_multi_predict)
+export(is_varying)
 export(keras_mlp)
 export(linear_reg)
 export(logistic_reg)
@@ -114,7 +116,9 @@ export(multi_predict)
 export(multi_predict_args)
 export(multinom_reg)
 export(nearest_neighbor)
+export(new_model_spec)
 export(null_model)
+export(null_value)
 export(nullmodel)
 export(pred_value_template)
 export(predict.model_fit)
@@ -133,12 +137,15 @@ export(set_model_mode)
 export(set_new_model)
 export(set_pred)
 export(show_call)
+export(show_fit)
 export(show_model_info)
 export(surv_reg)
 export(svm_poly)
 export(svm_rbf)
 export(tidy.model_fit)
 export(translate)
+export(update_dot_check)
+export(update_main_parameters)
 export(varying)
 export(varying_args)
 export(xgb_train)

NEWS.md

@@ -8,6 +8,8 @@
 
  * `glmnet` was removed as a dependency since the new version depends on 3.6.0 or greater. Keeping it would constrain `parsnip` to that same requirement. All `glmnet` tests are run locally. 
 
+ * A set of internal functions are now exported. These are helpful when creating a new package that registers new model specifications. 
+
 ## New Features
 
  * `nnet` was added as an engine to `multinom_reg()` [#209](https://github.com/tidymodels/parsnip/issues/209)

R/arguments.R

@@ -1,3 +1,10 @@
+#' Functions required for parsnip-adjacent packages
+#'
+#' These functions are helpful when creating new packages that will register
+#' new model specifications.
+#' @export
+#' @keywords internal
+#' @rdname add_on_exports
 #' @importFrom rlang expr enquos enquo quos is_quosure call2 quo_get_expr ll
 #' @importFrom rlang abort current_env get_expr is_missing is_null is_symbolic  missing_arg
 null_value <- function(x) {

R/misc.R

@@ -144,6 +144,9 @@ is_spark <- function(x)
   isTRUE(unname(x$method$fit$func["pkg"] == "sparklyr"))
 
 
+#' @export
+#' @keywords internal
+#' @rdname add_on_exports
 show_fit <- function(model, eng) {
   mod <- translate(x = model, engine = eng)
   fit_call <- show_call(mod)
@@ -181,6 +184,9 @@ names0 <- function (num, prefix = "x") {
 
 # ------------------------------------------------------------------------------
 
+#' @export
+#' @keywords internal
+#' @rdname add_on_exports
 update_dot_check <- function(...) {
   dots <- enquos(...)
   if (length(dots) > 0)
@@ -192,6 +198,9 @@ update_dot_check <- function(...) {
 
 # ------------------------------------------------------------------------------
 
+#' @export
+#' @keywords internal
+#' @rdname add_on_exports
 new_model_spec <- function(cls, args, eng_args, mode, method, engine) {
   spec_modes <- rlang::env_get(get_model_env(), paste0(cls, "_modes"))
   if (!(mode %in% spec_modes))
@@ -236,6 +245,9 @@ terms_y <- function(x) {
 
 # ------------------------------------------------------------------------------
 
+#' @export
+#' @keywords internal
+#' @rdname add_on_exports
 check_final_param <- function(x) {
   if (is.null(x)) {
     return(invisible(x))
@@ -256,6 +268,9 @@ check_final_param <- function(x) {
   invisible(x)
 }
 
+#' @export
+#' @keywords internal
+#' @rdname add_on_exports
 update_main_parameters <- function(args, param) {
 
   if (length(param) == 0) {

R/varying.R

@@ -193,14 +193,18 @@ non_varying_step_arguments <- c(
 
 # helpers ----------------------------------------------------------------------
 
+#' @export
+#' @keywords internal
+#' @rdname add_on_exports
 is_varying <- function(x) {
-  if(is.null(x)) {
+  if (is.null(x)) {
     res <- FALSE
   } else {
-    res <- if(is_quosure(x))
-      isTRUE(all.equal(x[[-1]], quote(varying())))
-    else
-      isTRUE(all.equal(x, quote(varying())))
+    if (is_quosure(x)) {
+      res <- isTRUE(all.equal(x[[-1]], quote(varying())))
+    } else {
+      res <- isTRUE(all.equal(x, quote(varying())))
+    }
   }
   res
 }