naskya/napi-rs
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fix(napi): InvalidArg error when create_external with size hint

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LongYinan 2021-03-11 19:02:42 +08:00
parent 66663d129d
commit 50f207f744
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GPG key ID: C3666B7FC82ADAD7
4 changed files with 20 additions and 3 deletions
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2
README.md
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@ -31,7 +31,7 @@ A minimal library for building compiled `NodeJS` add-ons in `Rust`.
## NodeJS
| Node10 | Node12 | Node14 | Node15 |
| ------ | ------- | ------ | ------ |
| ------ | ------ | ------ | ------ |
| ✓ | ✓ | ✓ | ✓ |
This library depends on N-API and requires `Node@10.0.0` or later.

5
napi/src/env.rs
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@ -798,7 +798,10 @@ impl Env {
)
})?;
if let Some(changed) = size_hint {
check_status!(unsafe { sys::napi_adjust_external_memory(self.0, changed, ptr::null_mut()) })?;
let mut adjusted_value = 0i64;
check_status!(unsafe {
sys::napi_adjust_external_memory(self.0, changed, &mut adjusted_value)
})?;
};
Ok(unsafe { JsExternal::from_raw_unchecked(self.0, object_value) })
}

6
test_module/__test__/create-external.spec.ts
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@ -7,3 +7,9 @@ test('should create external object and get it back', (t) => {
const externalObject = bindings.createExternal(42)
t.is(bindings.getExternalCount(externalObject), fixture)
})
test('should create external with size hint', (t) => {
const fixture = 42
const externalObject = bindings.createExternalWithHint(42)
t.is(bindings.getExternalCount(externalObject), fixture)
})

8
test_module/src/external.rs
View file

@ -13,6 +13,13 @@ pub fn create_external(ctx: CallContext) -> Result<JsExternal> {
ctx.env.create_external(native, None)
}
#[js_function(1)]
pub fn create_external_with_hint(ctx: CallContext) -> Result<JsExternal> {
let count = ctx.get::<JsNumber>(0)?.try_into()?;
let native = NativeObject { count };
ctx.env.create_external(native, Some(5))
}
#[js_function(1)]
pub fn get_external_count(ctx: CallContext) -> Result<JsNumber> {
let attached_obj = ctx.get::<JsExternal>(0)?;
@ -22,6 +29,7 @@ pub fn get_external_count(ctx: CallContext) -> Result<JsNumber> {
pub fn register_js(exports: &mut JsObject) -> Result<()> {
exports.create_named_method("createExternal", create_external)?;
exports.create_named_method("createExternalWithHint", create_external_with_hint)?;
exports.create_named_method("getExternalCount", get_external_count)?;
Ok(())
}