Macro sc_executor::impl_wasm_host_interface

macro_rules! impl_wasm_host_interface {
    (
		impl $interface_name:ident where $context:ident {
			$(
				$name:ident($( $names:ident : $params:ty ),* $(,)? ) $( -> $returns:ty )?
				{ $( $body:tt )* }
			)*
		}
	) => { ... };
}

Implements the wasm host interface for the given type.