struct Adaptor

Converts a member function in the implementation C++ class to a signature

compatible with the definition in the ops table.

This class assumes the |zxio_t*| pointer as passed as the first argument to

all |zxio_ops_t| entries is the pointer to the C++ implementation instance.

For example, given the |release| call with the following signature:

zx_status_t (*release)(zxio_t* io, zx_handle_t* out_handle);

The C++ implementation may define a member function with this signature:

zx_status_t MyClass::Release(zx_handle_t* out_handle);

And |Adaptor

<MyClass

>::From

<

&Release

>| will evaluate to a function with a

signature compatible to the C-style definition, treating |io| as a pointer

to the |HasIo|, invoking the corresponding member function automatically.