Module pass_by

Provides host <-> runtime FFI marshalling strategy newtype wrappers for defining runtime interfaces.

Structs

AllocateAndReturnByCodec

(DEPRECATED) Return T into the runtime using the SCALE codec.

AllocateAndReturnFatPointer

(DEPRECATED) Return T as a blob of bytes into the runtime.

AllocateAndReturnPointer

(DEPRECATED) Return T as a blob of bytes into the runtime.

PassAs

Pass T through the FFI boundary by first converting it to U in the runtime, and then converting it back to T on the host’s side.

PassFatPointerAndDecode

Pass a T into the host using the SCALE codec.

PassFatPointerAndDecodeSlice

Pass a &[T] into the host using the SCALE codec.

PassFatPointerAndRead

Pass a value into the host by a fat pointer.

PassFatPointerAndReadWrite

Pass a value into the host by a fat pointer, writing it back after the host call ends.

PassPointerAndRead

Pass a value into the host by a thin pointer.

PassPointerAndReadCopy

Pass a value into the host by a thin pointer.

PassPointerAndWrite

Pass a pointer into the host and write to it after the host call ends.

ReturnAs

Return T through the FFI boundary by first converting it to U on the host’s side, and then converting it back to T in the runtime.