Module altrep 

Core ALTREP types and registration traits.

Architecture

• FFI: Raw setters/types in crate::ffi::altrep
• Traits: Safe traits in crate::altrep_traits (Altrep, AltVec, AltInteger, etc.)
  • Required methods: Compiler-enforced by trait definition
  • Optional methods: Gated by HAS_* constants, defaults provided
• Bridge: Generic extern "C-unwind" trampolines in crate::altrep_bridge
• Macro: #[miniextendr] on a struct emits impl RegisterAltrep that:
  • Creates the class handle via R_make_alt*
  • Installs methods based on trait bounds and HAS_* consts

Enums

RBase

Base type for ALTREP vectors.

Statics

REGISTERED_CLASS_NAMES 🔒

Records every ALTREP class name registered during package_init().

Traits

AltrepClass

Trait implemented by ALTREP classes via #[miniextendr].

RegisterAltrep

Registration trait: implemented per type by the macro on struct items.

Functions

assert_altrep_class_uniqueness

Assert that all registered ALTREP class names are unique.

make_class_by_base^⚠

Create an ALTREP class handle based on the runtime base type.

validate_altrep_class

Validate that an ALTREP class handle was successfully created.