[R] Argument names ignored in schema supplied as `in_type` argument to `register_scalar_function()`

[csgillespie]

Describe the bug, including details regarding any error messages, version, and platform.

For in_type, I would have expected the argument name should match the data. But this doesn't seem to be the case

library(arrow)
library(dplyr)
# Make data set
write.csv(sleep, "sleep.csv", row.names = F)

# Register function
register_scalar_function(
  name = "f",
  fun = function(context, x) as.integer(x),
  in_type = schema(blah = int64()), # NOTE: Schema name
  out_type = int32(),
  auto_convert = TRUE
)

open_dataset("sleep.csv", format = "csv") |>
  mutate(f(group)) |>
  head() |>
  collect()

Component(s)

R

[nealrichardson]

We could add a check that identical(formalArgs(fun)[-1], names(in_type)) (if inherits(in_type, "Schema"), which it may not be if there's only one arg).

[thisisnic]

Issue resolved by pull request 51324
#51324