Function compile_wat_module_from_file

examples/async.cc:90–117

}

handle<wasmtime_module_t, wasmtime_module_delete>
compile_wat_module_from_file(wasm_engine_t *engine,
                             const std::string &filename) {
  std::ifstream t(filename);
  std::stringstream buffer;
  buffer << t.rdbuf();
  if (t.bad()) {
    std::cerr << "error reading file: " << filename << std::endl;
    std::exit(1);
  }
  const std::string &content = buffer.str();
  wasm_byte_vec_t wasm_bytes;
  handle<wasmtime_error_t, wasmtime_error_delete> error{
      wasmtime_wat2wasm(content.data(), content.size(), &wasm_bytes)};
  if (error) {
    exit_with_error("failed to parse wat", error.get(), nullptr);
  }
  wasmtime_module_t *mod_ptr = nullptr;
  error.reset(wasmtime_module_new(engine,
                                  reinterpret_cast<uint8_t *>(wasm_bytes.data),
                                  wasm_bytes.size, &mod_ptr));
  wasm_byte_vec_delete(&wasm_bytes);
  handle<wasmtime_module_t, wasmtime_module_delete> mod{mod_ptr};
  if (!mod) {
    exit_with_error("failed to compile module", error.get(), nullptr);
  }
  return mod;
}

class printer_thread_state {
public: