Implement tbl_sum() for dibble (#19)

NAMESPACE

@@ -117,6 +117,8 @@ S3method(tbl_format_header,ddf_col)
 S3method(tbl_format_header,tbl_ddf)
 S3method(tbl_format_setup,ddf_col)
 S3method(tbl_format_setup,tbl_ddf)
+S3method(tbl_sum,ddf_col)
+S3method(tbl_sum,tbl_ddf)
 S3method(zeros,array)
 S3method(zeros,ddf_col)
 S3method(zeros,default)
@@ -156,5 +158,6 @@ importFrom(pillar,tbl_format_body)
 importFrom(pillar,tbl_format_footer)
 importFrom(pillar,tbl_format_header)
 importFrom(pillar,tbl_format_setup)
+importFrom(pillar,tbl_sum)
 importFrom(tibble,as_tibble)
 importFrom(tidyr,replace_na)

R/ddf_col.R

@@ -154,6 +154,16 @@ format.ddf_col <- function(x, n = NULL, ...) {
                 ...)
 }
 
+#' @export
+tbl_sum.ddf_col <- function(x) {
+  dim_names <- dimnames(x)
+  dim <- list_sizes_unnamed(dim_names)
+  size_dim <- prod(dim)
+
+  c(`A dibble` = big_mark(size_dim),
+    `Dimensions` = commas(paste0(names(dim_names), " [", big_mark(dim), "]")))
+}
+
 #' @export
 tbl_format_setup.ddf_col <- function(x, width = NULL, ..., n = NULL, max_extra_cols = NULL, max_footer_lines = NULL, focus = NULL) {
   tbl_format_setup_dibble(x,

R/dibble-package.R

@@ -8,5 +8,6 @@
 #' @importFrom pillar tbl_format_footer
 #' @importFrom pillar tbl_format_header
 #' @importFrom pillar tbl_format_setup
+#' @importFrom pillar tbl_sum
 ## usethis namespace: end
 NULL

R/dibble.R

@@ -439,31 +439,13 @@ format_dibble <- function(x, n, ...) {
 }
 
 tbl_format_setup_dibble <- function(x, n, ...) {
-  dim_names <- dimnames(x)
-  axes <- names(dim_names)
-  dim <- list_sizes_unnamed(dim_names)
-  size_dim <- prod(dim)
+  size_dim <- prod(list_sizes_unnamed(dimnames(x)))
 
-  meas_names <- colnames(x)
-  size_meas <- big_mark(vec_size(meas_names))
-
-  dim_sum <- c(`Dimensions` = commas(paste0(axes, " [", big_mark(dim), "]")))
-  if (is_ddf_col(x)) {
-    tbl_sum <- c(`A dibble` = big_mark(size_dim),
-                             dim_sum)
-  } else {
-    tbl_sum <- c(`A dibble` = paste(big_mark(size_dim), size_meas,
-                                    sep = " x "),
-                 dim_sum,
-                 `Measures` = commas(meas_names))
-  }
-
-  x <- tibble::as_tibble(head_dibble(x,
-                                     n = n))
-  setup <- tbl_format_setup(x,
+  setup <- tbl_format_setup(tibble::as_tibble(head_dibble(x,
+                                                          n = n)),
                             n = n,
                             ...)
-  setup$tbl_sum <- tbl_sum
+  setup$tbl_sum <- tbl_sum(x)
   rows_total_old <- setup$rows_total
   rows_total_new <- size_dim
   setup$rows_total <- rows_total_new

R/tbl_ddf.R

@@ -197,6 +197,20 @@ format.tbl_ddf <- function(x, n = NULL, ...) {
                 ...)
 }
 
+#' @export
+tbl_sum.tbl_ddf <- function(x) {
+  dim_names <- dimnames(x)
+  dim <- list_sizes_unnamed(dim_names)
+  size_dim <- prod(dim)
+  meas_names <- colnames(x)
+  size_meas <- big_mark(vec_size(meas_names))
+
+  c(`A dibble` = paste(big_mark(size_dim), size_meas,
+                       sep = " x "),
+    `Dimensions` = commas(paste0(names(dim_names), " [", big_mark(dim), "]")),
+    `Measures` = commas(meas_names))
+}
+
 #' @export
 tbl_format_setup.tbl_ddf <- function(x, width = NULL, ..., n = NULL, max_extra_cols = NULL, max_footer_lines = NULL, focus = NULL) {
   tbl_format_setup_dibble(x,