Trait FFIConversion 

pub trait FFIConversion<T> {
    // Required methods
    unsafe fn ffi_from_const(ffi: *const Self) -> T;
    unsafe fn ffi_to_const(obj: T) -> *const Self;

    // Provided methods
    unsafe fn ffi_from(ffi: *mut Self) -> T { ... }
    unsafe fn ffi_to(obj: T) -> *mut Self { ... }
    unsafe fn ffi_from_opt(ffi: *mut Self) -> Option<T> { ... }
    unsafe fn ffi_to_opt(obj: Option<T>) -> *mut Self
       where Self: Sized { ... }
    unsafe fn destroy(ffi: *mut Self) { ... }
}

Required Methods

unsafe fn ffi_from_const(ffi: *const Self) -> T

Safety

unsafe fn ffi_to_const(obj: T) -> *const Self

Safety

Provided Methods

unsafe fn ffi_from(ffi: *mut Self) -> T

Safety

unsafe fn ffi_to(obj: T) -> *mut Self

Safety

unsafe fn ffi_from_opt(ffi: *mut Self) -> Option<T>

Safety

unsafe fn ffi_to_opt(obj: Option<T>) -> *mut Self

where Self: Sized,

Safety

unsafe fn destroy(ffi: *mut Self)

Safety

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl FFIConversion<&str> for c_char

unsafe fn ffi_from_const(ffi: *const Self) -> &'static str

unsafe fn ffi_to_const(obj: &str) -> *const Self

unsafe fn ffi_from(ffi: *mut Self) -> &'static str

unsafe fn ffi_to(obj: &str) -> *mut Self

unsafe fn destroy(ffi: *mut Self)

impl FFIConversion<String> for c_char

unsafe fn ffi_from_const(ffi: *const Self) -> String

unsafe fn ffi_to_const(obj: String) -> *const Self

unsafe fn ffi_from(ffi: *mut Self) -> String

unsafe fn ffi_to(obj: String) -> *mut Self

unsafe fn destroy(ffi: *mut Self)

Implementors

impl FFIConversion<*const c_void> for OpaqueContext

impl FFIConversion<*mut c_void> for OpaqueContextMut