ianmcook commented on a change in pull request #10327:
URL: https://github.com/apache/arrow/pull/10327#discussion_r637423216
##########
File path: r/R/dplyr-functions.R
##########
@@ -109,6 +126,55 @@ nse_funcs$as.numeric <- function(x) {
Expression$create("cast", x, options = cast_options(to_type = float64()))
}
+# is.* type functions
+nse_funcs$is.character <- function(x) {
+ x$type_id() %in% Type[c("STRING", "LARGE_STRING")]
+}
+nse_funcs$is.numeric <- function(x) {
+ x$type_id() %in% Type[c("UINT8", "INT8", "UINT16", "INT16", "UINT32",
"INT32",
+ "UINT64", "INT64", "HALF_FLOAT", "FLOAT", "DOUBLE",
+ "DECIMAL", "DECIMAL256")]
+}
+nse_funcs$is.double <- function(x) {
+ x$type_id() == Type["DOUBLE"]
+}
+nse_funcs$is.integer <- function(x) {
+ x$type_id() %in% Type[c("UINT8", "INT8", "UINT16", "INT16", "UINT32",
"INT32",
+ "UINT64", "INT64")]
+}
+nse_funcs$is.integer64 <- function(x) {
+ x$type_id() == Type["INT64"]
+}
+nse_funcs$is.logical <- function(x) {
+ x$type_id() == Type["BOOL"]
+}
+nse_funcs$is.factor <- function(x) {
+ x$type_id() == Type["DICTIONARY"]
+}
+nse_funcs$is.list <- function(x) {
+ x$type_id() %in% Type[c("LIST", "FIXED_SIZE_LIST", "LARGE_LIST")]
+}
+
+# rlang::is_* type functions
+nse_funcs$is_character <- function(x, n = NULL) {
+ nse_funcs$is.character(x) && (is.null(n) || length(x) == n)
+}
+nse_funcs$is_double <- function(x, n = NULL, finite = NULL) {
+ nse_funcs$is.double(x) &&
+ (is.null(n) || length(x) == n) &&
+ (is.null(finite) ||
+ (finite && as.vector(!any(is_in(x, c(NA_real_, Inf,-Inf, NaN))))))
Review comment:
TODO: wait until #10375 is merged, rebase, simplify this to use
`is.finite()`
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