Struct libffi::high::arity1::ClosureOnce1

pub struct ClosureOnce1<A, R> { /* private fields */ }

A one-shot, typed closure with the given argument and result types.

Implementations

impl<A: CType, R: CType> ClosureOnce1<A, R>

pub fn new<Callback>(callback: Callback) -> Selfwhere Callback: FnOnce(A) -> R + Any,

Constructs a typed closure callable from C from a Rust closure.

impl<A: Copy, R: CType> ClosureOnce1<A, R>

pub fn new_with_cif<Callback>(cif: Cif1<A, R>, callback: Callback) -> Selfwhere Callback: FnOnce(A) -> R + Any,

Constructs a one-shot closure callable from C from a CIF describing the calling convention for the resulting function and the Rust closure to call.

impl<A, R: CType> ClosureOnce1<A, R>

pub fn code_ptr(&self) -> &FnPtr1<'_, A, R>

Gets the C code pointer that is used to invoke the closure.

pub fn from_parts<U: Any>( cif: Cif1<A, R>, callback: CallbackOnce1<U, A, R::RetType>, userdata: U ) -> Self

Constructs a one-shot closure callable from C from a CIF describing the calling convention for the resulting function, a callback for the function to call, and userdata to pass to the callback. Note that the return type of the callback must follow the libffi implicit extension rules.