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Use out parameter for generated methods returning JSVal (#34087)

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* Make generated bindings that return a WebIDL `any` value use out parameters.

Returning raw JSVal values makes it easier to create GC hazards in code
that calls these methods. Accepting a MutableHandle argument instead
ensures that the values are rooted by the caller.

Signed-off-by: Josh Matthews <josh@joshmatthews.net>

* Update mozjs.

Signed-off-by: Josh Matthews <josh@joshmatthews.net>

* Fix clippy warnings.

Signed-off-by: Josh Matthews <josh@joshmatthews.net>

---------

Signed-off-by: Josh Matthews <josh@joshmatthews.net>
This commit is contained in:
Josh Matthews 2024-11-05 03:29:08 -05:00 • committed by GitHub
parent 537958a3cc
commit 25a0764a37
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GPG key ID: B5690EEEBB952194
38 changed files with 763 additions and 515 deletions
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12
components/script/dom/testbinding.rs
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@ -11,8 +11,8 @@ use std::time::Duration;
use dom_struct::dom_struct;
use js::jsapi::{Heap, JSObject, JS_NewPlainObject};
use js::jsval::{JSVal, NullValue};
use js::rust::{CustomAutoRooterGuard, HandleObject, HandleValue};
use js::jsval::JSVal;
use js::rust::{CustomAutoRooterGuard, HandleObject, HandleValue, MutableHandleValue};
use js::typedarray::{self, Uint8ClampedArray};
use script_traits::serializable::BlobImpl;
use servo_config::prefs;
@ -229,9 +229,7 @@ impl TestBindingMethods for TestBinding {
create_buffer_source(cx, &data, array.handle_mut())
.expect("Creating ClampedU8 array should never fail")
}
fn AnyAttribute(&self, _: SafeJSContext) -> JSVal {
NullValue()
}
fn AnyAttribute(&self, _: SafeJSContext, _: MutableHandleValue) {}
fn SetAnyAttribute(&self, _: SafeJSContext, _: HandleValue) {}
#[allow(unsafe_code)]
fn ObjectAttribute(&self, cx: SafeJSContext) -> NonNull<JSObject> {
@ -426,9 +424,7 @@ impl TestBindingMethods for TestBinding {
can_gc,
)
}
fn ReceiveAny(&self, _: SafeJSContext) -> JSVal {
NullValue()
}
fn ReceiveAny(&self, _: SafeJSContext, _: MutableHandleValue) {}
fn ReceiveObject(&self, cx: SafeJSContext) -> NonNull<JSObject> {
self.ObjectAttribute(cx)
}