Module altrep_bridge 

Unsafe ALTREP trampolines and installers bridging safe traits to R’s C ABI.

This module provides:

• Generic extern "C-unwind" trampolines that call into safe trait methods
• Installer functions that register methods with R based on HAS_* consts

Design

Trampolines are only installed when HAS_* is true. When false, the method is NOT installed with R, so R uses its own default behavior.

Macros

def_installer 🔒

Generate a family-specific installer function from a declarative spec.

Functions

guarded_altrep_call 🔒

Dispatch an ALTREP callback through the guard mode selected by T::GUARD.

install_base^⚠

Install base ALTREP methods (always installs length, conditionally installs optional).

install_cplx^⚠

Install complex-specific methods.

install_int^⚠

Install integer-specific methods.

install_lgl^⚠

Install logical-specific methods.

install_list^⚠

Install list-specific methods.

install_raw^⚠

Install raw-specific methods.

install_real^⚠

Install real-specific methods.

install_str^⚠

Install string-specific methods.

install_vec^⚠

Install vector-level methods.

t_coerce^⚠

Trampoline for Coerce method.

t_cplx_elt^⚠

Trampoline for complex Elt method.

t_cplx_get_region^⚠

Trampoline for complex Get_region method.

t_dataptr^⚠

Trampoline for Dataptr method.

t_dataptr_or_null^⚠

Trampoline for Dataptr_or_null method.

t_duplicate^⚠

Trampoline for Duplicate method.

t_duplicate_ex^⚠

Trampoline for DuplicateEX method (extended duplication).

t_extract_subset^⚠

Trampoline for Extract_subset method.

t_inspect^⚠

Trampoline for Inspect method.

t_int_elt^⚠

Trampoline for integer Elt method.

t_int_get_region^⚠

Trampoline for integer Get_region method.

t_int_is_sorted^⚠

Trampoline for integer Is_sorted method.

t_int_max^⚠

Trampoline for integer Max method.

t_int_min^⚠

Trampoline for integer Min method.

t_int_no_na^⚠

Trampoline for integer No_NA method.

t_int_sum^⚠

Trampoline for integer Sum method.

t_length^⚠

Trampoline for Length method.

t_lgl_elt^⚠

Trampoline for logical Elt method.

t_lgl_get_region^⚠

Trampoline for logical Get_region method.

t_lgl_is_sorted^⚠

Trampoline for logical Is_sorted method.

t_lgl_no_na^⚠

Trampoline for logical No_NA method.

t_lgl_sum^⚠

Trampoline for logical Sum method.

t_list_elt^⚠

Trampoline for list Elt method (REQUIRED for ALTLIST).

t_list_set_elt^⚠

Trampoline for list Set_elt method.

t_raw_elt^⚠

Trampoline for raw Elt method.

t_raw_get_region^⚠

Trampoline for raw Get_region method.

t_real_elt^⚠

Trampoline for real Elt method.

t_real_get_region^⚠

Trampoline for real Get_region method.

t_real_is_sorted^⚠

Trampoline for real Is_sorted method.

t_real_max^⚠

Trampoline for real Max method.

t_real_min^⚠

Trampoline for real Min method.

t_real_no_na^⚠

Trampoline for real No_NA method.

t_real_sum^⚠

Trampoline for real Sum method.

t_serialized_state^⚠

Trampoline for Serialized_state method.

t_str_elt^⚠

Trampoline for string Elt method (REQUIRED for ALTSTRING).

t_str_is_sorted^⚠

Trampoline for string Is_sorted method.

t_str_no_na^⚠

Trampoline for string No_NA method.

t_str_set_elt^⚠

Trampoline for string Set_elt method.

t_unserialize^⚠

Trampoline for Unserialize method.

t_unserialize_ex^⚠

Trampoline for UnserializeEX method (extended unserialization with attributes).