Module rlang_ffi 

Functions

arg 🔒

Get the nth arg, returning NULL if missing.

as_char_vec 🔒

Extract a character vector from an RValue.

check_character_constraints 🔒

Check character-specific constraints: missing (NA) and empty (“”) values.

check_length 🔒

Check if length matches expected n (None = no restriction).

ffi_cnd_type 🔒

ffi_cnd_type(x) — return the condition type. Inspects the class attribute to determine if it’s an error, warning, message, or generic condition.

ffi_duplicate 🔒

ffi_duplicate(x, shallow) — deep or shallow copy. In miniR, RValue::clone() is always a deep copy since we use Rc<RefCell<>> for environments.

ffi_env_binding_types 🔒

ffi_env_binding_types(env, names) — return binding types as an integer vector. Types: 0 = regular, 1 = active binding, 2 = promise

ffi_env_clone 🔒

ffi_env_clone(env) — clone an environment (shallow: same parent, copy bindings).

ffi_env_has 🔒

ffi_env_has(env, names, inherit)

ffi_env_poke_parent 🔒

ffi_env_poke_parent(env, parent) — set the parent of an environment.

ffi_find_var 🔒

ffi_find_var(sym, env) — find a variable in an environment.

ffi_format_error_arg 🔒

ffi_format_error_arg(x) — format an argument for error messages. Returns the argument as a backtick-quoted string.

ffi_hash 🔒

ffi_hash(x) — compute a hash of x.

ffi_is_atomic 🔒

ffi_is_atomic(x, n) — TRUE for atomic vectors and NULL

ffi_is_call 🔒

ffi_is_call(x, name, n, ns)

ffi_is_character 🔒

ffi_is_character(x, n, missing, empty)

ffi_is_closure 🔒

ffi_is_closure(x)

ffi_is_complex 🔒

ffi_is_complex(x, n, finite)

ffi_is_double 🔒

ffi_is_double(x, n, finite)

ffi_is_finite 🔒

ffi_is_finite(x) — all elements are finite

ffi_is_formula 🔒

ffi_is_formula(x, n, lhs)

ffi_is_function 🔒

ffi_is_function(x)

ffi_is_integer 🔒

ffi_is_integer(x, n)

ffi_is_integerish 🔒

ffi_is_integerish(x, n, finite)

ffi_is_list 🔒

ffi_is_list(x, n)

ffi_is_logical 🔒

ffi_is_logical(x, n)

ffi_is_primitive 🔒

ffi_is_primitive(x)

ffi_is_primitive_eager 🔒

ffi_is_primitive_eager(x) — in miniR all builtins are eager

ffi_is_primitive_lazy 🔒

ffi_is_primitive_lazy(x) — in miniR no builtins are lazy

ffi_is_raw 🔒

ffi_is_raw(x, n)

ffi_is_reference 🔒

ffi_is_reference(x, y) — check if two objects are identical (pointer-equal for environments, deep-equal for others).

ffi_is_string 🔒

ffi_is_string(x, string, empty)

ffi_is_vector 🔒

ffi_is_vector(x, n) — TRUE for atomic vectors and lists

ffi_length 🔒

ffi_length(x) — return length as integer

ffi_names 🔒

ffi_names(x) — return names attribute

ffi_ns_registry_env 🔒

ffi_ns_registry_env() — return the namespace registry (empty environment).

ffi_obj_address 🔒

ffi_obj_address(x) — return address as hex string. We use a hash of the debug representation since RValues don’t have stable addresses.

ffi_set_names 🔒

ffi_set_names(x, names, transform) — set names on x. transform is ignored (it’s a function for name transformation).

ffi_standalone_check_number 🔒

ffi_standalone_check_number(x, allow_decimal, min, max, allow_infinite, allow_na, allow_null) -> integer Returns 0 for success, positive integer for various failure codes.

ffi_standalone_is_bool 🔒

ffi_standalone_is_bool(x, allow_na, allow_null) -> logical

ffi_symbol 🔒

ffi_symbol(x) — create a symbol (language object) from a string.

int_scalar 🔒

Extract an integer scalar from an RValue, or None if NULL.

int_val 🔒

is_r_null 🔒

Check if an arg is R NULL (meaning “no restriction” in rlang type checks).

lgl 🔒

lgl_scalar 🔒

Extract a logical scalar from an RValue, or None if NULL.

r_bool 🔒

r_false 🔒

register_rlang_ccallables

Register all rlang CCallable functions in the cross-package registry.

rlang_arg_match 🔒

arg_match — match an argument to allowed values (legacy).

rlang_arg_match_2 🔒

arg_match_2 — match an argument to allowed values.

rlang_as_data_mask 🔒

Convert data to a data mask.

rlang_as_data_pronoun 🔒

Create a data pronoun from an environment.

rlang_as_function 🔒

Coerce to function — if it’s already a function, return it.

rlang_env_dots_list 🔒

Get dots as a list from an environment.

rlang_env_dots_values 🔒

Get dots values from an environment.

rlang_env_print 🔒

Print environment — no-op.

rlang_env_unbind 🔒

Unbind variables from an environment.

rlang_eval_tidy 🔒

Evaluate an expression in a tidy evaluation context.

rlang_format_error_arg 🔒

Format an argument name for error messages.

rlang_is_quosure 🔒

Check if an object is a quosure.

rlang_is_splice_box 🔒

is_splice_box — check if object is a splice box.

rlang_names_as_unique 🔒

Make names unique by appending …1, …2, etc. for duplicates/NA/empty.

rlang_new_data_mask 🔒

Create a new data mask from bottom and top environments.

rlang_new_quosure 🔒

Create a new quosure.

rlang_obj_encode_utf8 🔒

Encode a character vector as UTF-8.

rlang_obj_type_friendly_full 🔒

Return a human-friendly type description for an R object.

rlang_print_backtrace 🔒

Print backtrace — no-op.

rlang_quo_get_env 🔒

Get the environment from a quosure.

rlang_quo_get_expr 🔒

Get the expression from a quosure.

rlang_quo_set_env 🔒

Set the environment on a quosure.

rlang_quo_set_expr 🔒

Set the expression on a quosure.

rlang_squash_if 🔒

Squash a list conditionally.

rlang_stop_internal 🔒

rlang_stop_internal — abort with an internal error message.

rlang_stop_internal2 🔒

rlang_stop_internal2 — abort with file/line context.

rlang_str_as_symbol 🔒

Convert a CHARSXP or scalar STRSXP to a symbol (SYMSXP).

rlang_sym_as_character 🔒

Convert a symbol to a character SEXP.

rlang_sym_as_string 🔒

Convert a symbol to a string SEXP (CHARSXP).

rlang_unbox 🔒

Unbox a scalar value from a list.

rlang_xxh3_64bits 🔒

xxh3_64bits hash — return 0 as stub.

try_dispatch

Try to dispatch an rlang FFI function by symbol name.