Function operator<<

example/callback.cc:10–34

Print a Wasm value

// Print a Wasm value
auto operator<<(std::ostream& out, const wasm::Val& val) -> std::ostream& {
  switch (val.kind()) {
    case wasm::ValKind::I32: {
      out << val.i32();
    } break;
    case wasm::ValKind::I64: {
      out << val.i64();
    } break;
    case wasm::ValKind::F32: {
      out << val.f32();
    } break;
    case wasm::ValKind::F64: {
      out << val.f64();
    } break;
    case wasm::ValKind::EXTERNREF:
    case wasm::ValKind::FUNCREF: {
      if (val.ref() == nullptr) {
        out << "null";
      } else {
        out << "ref(" << val.ref() << ")";
      }
    } break;
  }
  return out;
}

// A function to be called from Wasm code.
auto print_callback(