Function match_arg_vec_from_sexp

pub fn match_arg_vec_from_sexp<T: MatchArg>(
    sexp: SEXP,
) -> Result<Vec<T>, MatchArgError>

Expand description

Extract multiple strings from an R SEXP (STRSXP) and match each against the choices of a MatchArg type.

Used by the generated C wrapper for match_arg + several_ok parameters (match.arg with several.ok = TRUE).

NULL input returns all variants (matching R’s match.arg default with several.ok = TRUE).

Note: factors (INTSXP) are not handled here — the R wrapper coerces factors to character before the .Call() boundary.

match_arg_vec_from_sexp