Trait ffi_utils::callback::Callback

pub trait Callback {
    type Args: CallbackArgs;
    fn call(
        &self, 
        user_data: *mut c_void, 
        error: *const FfiResult, 
        args: Self::Args
    );
}

This trait allows us to treat callbacks with different number and type of arguments uniformly.

Associated Types

type Args: CallbackArgs

Arguments for the callback. Should be a tuple.

Required Methods

fn call(
    &self,
    user_data: *mut c_void,
    error: *const FfiResult,
    args: Self::Args
)

Call the callback, passing the user data pointer, error code and any additional arguments.

Implementations on Foreign Types

impl Callback for extern "C" fn(_: *mut c_void, _: *const FfiResult)

type Args = ()

fn call(
    &self,
    user_data: *mut c_void,
    error: *const FfiResult,
    _args: Self::Args
)

impl<T: CallbackArgs> Callback for extern "C" fn(_: *mut c_void, _: *const FfiResult, _: T)

type Args = T

fn call(
    &self,
    user_data: *mut c_void,
    error: *const FfiResult,
    args: Self::Args
)

impl<T: CallbackArgs> Callback for unsafe extern "C" fn(_: *mut c_void, _: *const FfiResult, _: T)

type Args = T

fn call(
    &self,
    user_data: *mut c_void,
    error: *const FfiResult,
    args: Self::Args
)

impl<T0: CallbackArgs, T1: CallbackArgs> Callback for extern "C" fn(_: *mut c_void, _: *const FfiResult, _: T0, _: T1)

type Args = (T0, T1)

fn call(
    &self,
    user_data: *mut c_void,
    error: *const FfiResult,
    args: Self::Args
)

impl<T0: CallbackArgs, T1: CallbackArgs, T2: CallbackArgs> Callback for extern "C" fn(_: *mut c_void, _: *const FfiResult, _: T0, _: T1, _: T2)

type Args = (T0, T1, T2)

fn call(
    &self,
    user_data: *mut c_void,
    error: *const FfiResult,
    args: Self::Args
)

Implementors