Struct ArenaGuard 

pub struct ArenaGuard<'a, M: MapStorage> {
    arena: &'a Arena<M>,
    sexp: SEXP,
}

An RAII guard that unprotects a SEXP when dropped.

Fields

arena: &'a Arena<M>

sexp: SEXP

Implementations

impl<'a, M: MapStorage> ArenaGuard<'a, M>

pub unsafe fn new(arena: &'a Arena<M>, sexp: SEXP) -> Self

Create a new guard that protects the SEXP and unprotects on drop.

Safety

Must be called from the R main thread. The SEXP must be valid.

pub fn get(&self) -> SEXP

Returns the protected SEXP.

Trait Implementations

impl<M: MapStorage> Deref for ArenaGuard<'_, M>

type Target = SEXP

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl<M: MapStorage> Drop for ArenaGuard<'_, M>

fn drop(&mut self)

Executes the destructor for this type.