dragosmg commented on code in PR #13960:
URL: https://github.com/apache/arrow/pull/13960#discussion_r955419205
##########
r/R/dplyr-eval.R:
##########
@@ -121,3 +128,120 @@ format_expr <- function(x) {
}
head(out, 1)
}
+
+# vector of function names that do not have corresponding bindings, but we
+# shouldn't try to translate
+translation_exceptions <- c(
+ "c",
+ "$",
+ "factor",
+ # "~",
+ # "(",
+ "across",
+ ":",
+ "[",
+ "regex",
+ "fixed",
+ "list",
+ "%>%",
+ # all the types functions
+ "int8",
+ "int16",
+ "int32",
+ "int64",
+ "uint8",
+ "uint16",
+ "uint32",
+ "uint64",
+ "float16",
+ "halffloat",
+ "float32",
+ "float",
+ "float64",
+ "boolean",
+ "bool",
+ "utf8",
+ "large_utf8",
+ "binary",
+ "large_binary",
+ "fixed_size_binary",
+ "string",
+ "date32",
+ "date64",
+ "time32",
+ "time64",
+ "duration",
+ "null",
+ "timestamp",
+ "decimal",
+ "decimal128",
+ "decimal256"
+)
+
+register_user_bindings <- function(quo, .env) {
+ unknown_functions_chr <- setdiff(
+ all_funs(quo),
+ union(
+ names(.env),
+ translation_exceptions
+ )
+ )
+
+ if (length(unknown_functions_chr != 0)) {
+ # get the actual functions from the quosure's original environment or, if
+ # the call contains `::`, get the function from the namespace
+ unknown_functions <- purrr::map_if(
+ .x = unknown_functions_chr,
+ .p = ~ !grepl("::", .x),
+ .f = ~ tryCatch(as_function(.x, env = rlang::quo_get_env(quo)), error =
function(e) NULL),
+ .else = ~ asNamespace(sub(":{+}.*?$", "", .x))[[sub("^.*?:{+}", "", .x)]]
+ )
+
+ # set the original quosure environment as the parent environment for the
+ # functions
+ parent.env(.env) <- rlang::quo_get_env(quo)
Review Comment:
> Also, I'm not sure you want `rlang::quo_get_env(quo)`...you might want the
original function environment (i.e., `environment(unknown_fn)`?
Would that be a bit circular, given
https://github.com/dragosmg/arrow/blob/dc345571458d9d466dd37db38f6830ab2566f08f/r/R/dplyr-eval.R#L207
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