feat(npm): implement Node API (#13633)

This PR implements the NAPI for loading native modules into Deno. 

Co-authored-by: Bartek Iwańczuk <biwanczuk@gmail.com>
Co-authored-by: DjDeveloper <43033058+DjDeveloperr@users.noreply.github.com>
Co-authored-by: Ryan Dahl <ry@tinyclouds.org>

1 files changed, 73 insertions, 0 deletions

diff --git a/test_napi/src/array.rs b/test_napi/src/array.rs
new file mode 100644
index 000000000..767aa08b1
--- /dev/null
+++ b/test_napi/src/array.rs
@@ -0,0 +1,73 @@
+// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
+
+use napi_sys::Status::napi_ok;
+use napi_sys::ValueType::napi_number;
+use napi_sys::ValueType::napi_object;
+use napi_sys::*;
+use std::ptr;
+
+extern "C" fn test_array_new(
+  env: napi_env,
+  info: napi_callback_info,
+) -> napi_value {
+  let (args, argc, _) = crate::get_callback_info!(env, info, 1);
+  assert_eq!(argc, 1);
+
+  let mut ty = -1;
+  assert!(unsafe { napi_typeof(env, args[0], &mut ty) } == napi_ok);
+  assert_eq!(ty, napi_object);
+
+  let mut value: napi_value = ptr::null_mut();
+  assert!(unsafe { napi_create_array(env, &mut value) } == napi_ok);
+
+  let mut length: u32 = 0;
+  assert!(
+    unsafe { napi_get_array_length(env, args[0], &mut length) } == napi_ok
+  );
+
+  for i in 0..length {
+    let mut e: napi_value = ptr::null_mut();
+    assert!(unsafe { napi_get_element(env, args[0], i, &mut e) } == napi_ok);
+    assert!(unsafe { napi_set_element(env, value, i, e) } == napi_ok);
+  }
+
+  value
+}
+
+extern "C" fn test_array_new_with_length(
+  env: napi_env,
+  info: napi_callback_info,
+) -> napi_value {
+  let (args, argc, _) = crate::get_callback_info!(env, info, 1);
+  assert_eq!(argc, 1);
+
+  let mut ty = -1;
+  assert!(unsafe { napi_typeof(env, args[0], &mut ty) } == napi_ok);
+  assert_eq!(ty, napi_number);
+
+  let mut len: u32 = 0;
+  assert!(unsafe { napi_get_value_uint32(env, args[0], &mut len) } == napi_ok);
+
+  let mut value: napi_value = ptr::null_mut();
+  assert!(
+    unsafe { napi_create_array_with_length(env, len as usize, &mut value) }
+      == napi_ok
+  );
+
+  value
+}
+
+pub fn init(env: napi_env, exports: napi_value) {
+  let properties = &[
+    crate::new_property!(env, "test_array_new\0", test_array_new),
+    crate::new_property!(
+      env,
+      "test_array_new_with_length\0",
+      test_array_new_with_length
+    ),
+  ];
+
+  unsafe {
+    napi_define_properties(env, exports, properties.len(), properties.as_ptr())
+  };
+}