Filter out webidl files based on special comments, and feature-gate webxr interfaces. (#34348)

* Filter out webidl files based on skip-if directives.

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

* script: Don't build XR functionality without webxr feature.

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

* Fix tidy.

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

* script: Adjust imports for file movement.

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

* Fix clippy.

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

* Formatting.

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

* Clean up webxr module import.

Co-authored-by: Samson <16504129+sagudev@users.noreply.github.com>
Signed-off-by: Josh Matthews <josh@joshmatthews.net>

---------

Signed-off-by: Josh Matthews <josh@joshmatthews.net>
Co-authored-by: Samson <16504129+sagudev@users.noreply.github.com>

components/script/dom/webxr/xrrigidtransform.rs

@@ -0,0 +1,188 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+use dom_struct::dom_struct;
+use euclid::{RigidTransform3D, Rotation3D, Vector3D};
+use js::rust::HandleObject;
+use js::typedarray::{Float32, Float32Array};
+
+use crate::dom::bindings::buffer_source::HeapBufferSource;
+use crate::dom::bindings::codegen::Bindings::DOMPointBinding::DOMPointInit;
+use crate::dom::bindings::codegen::Bindings::XRRigidTransformBinding::XRRigidTransformMethods;
+use crate::dom::bindings::error::{Error, Fallible};
+use crate::dom::bindings::reflector::{reflect_dom_object_with_proto, DomObject, Reflector};
+use crate::dom::bindings::root::{DomRoot, MutNullableDom};
+use crate::dom::dompointreadonly::DOMPointReadOnly;
+use crate::dom::globalscope::GlobalScope;
+use crate::dom::window::Window;
+use crate::dom::xrsession::ApiRigidTransform;
+use crate::script_runtime::{CanGc, JSContext};
+
+#[dom_struct]
+pub struct XRRigidTransform {
+    reflector_: Reflector,
+    position: MutNullableDom<DOMPointReadOnly>,
+    orientation: MutNullableDom<DOMPointReadOnly>,
+    #[ignore_malloc_size_of = "defined in euclid"]
+    #[no_trace]
+    transform: ApiRigidTransform,
+    inverse: MutNullableDom<XRRigidTransform>,
+    #[ignore_malloc_size_of = "defined in mozjs"]
+    matrix: HeapBufferSource<Float32>,
+}
+
+impl XRRigidTransform {
+    fn new_inherited(transform: ApiRigidTransform) -> XRRigidTransform {
+        XRRigidTransform {
+            reflector_: Reflector::new(),
+            position: MutNullableDom::default(),
+            orientation: MutNullableDom::default(),
+            transform,
+            inverse: MutNullableDom::default(),
+            matrix: HeapBufferSource::default(),
+        }
+    }
+
+    pub fn new(
+        global: &GlobalScope,
+        transform: ApiRigidTransform,
+        can_gc: CanGc,
+    ) -> DomRoot<XRRigidTransform> {
+        Self::new_with_proto(global, None, transform, can_gc)
+    }
+
+    fn new_with_proto(
+        global: &GlobalScope,
+        proto: Option<HandleObject>,
+        transform: ApiRigidTransform,
+        can_gc: CanGc,
+    ) -> DomRoot<XRRigidTransform> {
+        reflect_dom_object_with_proto(
+            Box::new(XRRigidTransform::new_inherited(transform)),
+            global,
+            proto,
+            can_gc,
+        )
+    }
+
+    pub fn identity(window: &GlobalScope, can_gc: CanGc) -> DomRoot<XRRigidTransform> {
+        let transform = RigidTransform3D::identity();
+        XRRigidTransform::new(window, transform, can_gc)
+    }
+}
+
+impl XRRigidTransformMethods<crate::DomTypeHolder> for XRRigidTransform {
+    // https://immersive-web.github.io/webxr/#dom-xrrigidtransform-xrrigidtransform
+    fn Constructor(
+        window: &Window,
+        proto: Option<HandleObject>,
+        can_gc: CanGc,
+        position: &DOMPointInit,
+        orientation: &DOMPointInit,
+    ) -> Fallible<DomRoot<Self>> {
+        if position.w != 1.0 {
+            return Err(Error::Type(format!(
+                "XRRigidTransform must be constructed with a position that has a w value of of 1.0, not {}",
+                position.w
+            )));
+        }
+
+        if !position.x.is_finite() ||
+            !position.y.is_finite() ||
+            !position.z.is_finite() ||
+            !position.w.is_finite()
+        {
+            return Err(Error::Type(
+                "Position must not contain non-finite values".into(),
+            ));
+        }
+
+        if !orientation.x.is_finite() ||
+            !orientation.y.is_finite() ||
+            !orientation.z.is_finite() ||
+            !orientation.w.is_finite()
+        {
+            return Err(Error::Type(
+                "Orientation must not contain non-finite values".into(),
+            ));
+        }
+
+        let translate = Vector3D::new(position.x as f32, position.y as f32, position.z as f32);
+        let rotate = Rotation3D::unit_quaternion(
+            orientation.x as f32,
+            orientation.y as f32,
+            orientation.z as f32,
+            orientation.w as f32,
+        );
+
+        if !rotate.i.is_finite() {
+            // if quaternion has zero norm, we'll get an infinite or NaN
+            // value for each element. This is preferable to checking for zero.
+            return Err(Error::InvalidState);
+        }
+        let transform = RigidTransform3D::new(rotate, translate);
+        Ok(XRRigidTransform::new_with_proto(
+            &window.global(),
+            proto,
+            transform,
+            can_gc,
+        ))
+    }
+
+    // https://immersive-web.github.io/webxr/#dom-xrrigidtransform-position
+    fn Position(&self, can_gc: CanGc) -> DomRoot<DOMPointReadOnly> {
+        self.position.or_init(|| {
+            let t = &self.transform.translation;
+            DOMPointReadOnly::new(
+                &self.global(),
+                t.x.into(),
+                t.y.into(),
+                t.z.into(),
+                1.0,
+                can_gc,
+            )
+        })
+    }
+    // https://immersive-web.github.io/webxr/#dom-xrrigidtransform-orientation
+    fn Orientation(&self, can_gc: CanGc) -> DomRoot<DOMPointReadOnly> {
+        self.orientation.or_init(|| {
+            let r = &self.transform.rotation;
+            DOMPointReadOnly::new(
+                &self.global(),
+                r.i.into(),
+                r.j.into(),
+                r.k.into(),
+                r.r.into(),
+                can_gc,
+            )
+        })
+    }
+    // https://immersive-web.github.io/webxr/#dom-xrrigidtransform-inverse
+    fn Inverse(&self, can_gc: CanGc) -> DomRoot<XRRigidTransform> {
+        self.inverse.or_init(|| {
+            let transform = XRRigidTransform::new(&self.global(), self.transform.inverse(), can_gc);
+            transform.inverse.set(Some(self));
+            transform
+        })
+    }
+    // https://immersive-web.github.io/webxr/#dom-xrrigidtransform-matrix
+    fn Matrix(&self, _cx: JSContext) -> Float32Array {
+        if !self.matrix.is_initialized() {
+            self.matrix
+                .set_data(_cx, &self.transform.to_transform().to_array())
+                .expect("Failed to set on data on transform's internal matrix.")
+        }
+
+        self.matrix
+            .get_buffer()
+            .expect("Failed to get transform's internal matrix.")
+    }
+}
+
+impl XRRigidTransform {
+    /// <https://immersive-web.github.io/webxr/#dom-xrpose-transform>
+    pub fn transform(&self) -> ApiRigidTransform {
+        self.transform
+    }
+}