Function main

examples/wasip1/main.cc:30–63

}

int main() {
  // Define the WASI functions globally on the `Config`.
  Engine engine;
  Linker linker(engine);
  linker.define_wasi().unwrap();

  // Create a WASI context and put it in a Store; all instances in the store
  // share this context. `WasiConfig` provides a number of ways to
  // configure what the target program will have access to.
  WasiConfig wasi;
  wasi.inherit_argv();
  wasi.inherit_stdin();
  wasi.inherit_stdout();
  wasi.inherit_stderr();

  Store store(engine);
  store.context().set_wasi(std::move(wasi)).unwrap();

  // Load and compile the wasm module.
  auto bytes = read_binary_file("target/wasm32-wasip1/debug/wasi.wasm");
  auto module =
      Module::compile(engine, Span<uint8_t>(bytes.data(), bytes.size()))
          .unwrap();

  // Define the module in the linker (anonymous name matches Rust example
  // usage).
  linker.module(store.context(), "", module).unwrap();

  // Get the default export (command entrypoint) and invoke it.
  Func default_func = linker.get_default(store.context(), "").unwrap();
  default_func.call(store, {}).unwrap();

  return 0;
}