Function callback

example/hostref.cc:11–18

A function to be called from Wasm code.

// A function to be called from Wasm code.
auto callback(
  const wasm::vec<wasm::Val>& args, wasm::vec<wasm::Val>& results
) -> wasm::own<wasm::Trap> {
  std::cout << "Calling back..." << std::endl;
  std::cout << "> " << (args[0].ref() ? args[0].ref()->get_host_info() : nullptr) << std::endl;
  results[0] = args[0].copy();
  return nullptr;
}


auto get_export_func(const wasm::ownvec<wasm::Extern>& exports, size_t i) -> const wasm::Func* {