1 files changed, 171 insertions, 0 deletions
diff --git a/servo/components/style/gecko/arc_types.rs b/servo/components/style/gecko/arc_types.rs
new file mode 100644
index 0000000000..24bf22d69a
--- /dev/null
+++ b/servo/components/style/gecko/arc_types.rs
@@ -0,0 +1,171 @@
+/* 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/. */
+
+//! This file lists all arc FFI types and defines corresponding addref and release functions. This
+//! list loosely corresponds to ServoLockedArcTypeList.h file in Gecko.
+
+#![allow(non_snake_case, missing_docs)]
+
+use crate::gecko::url::CssUrlData;
+use crate::media_queries::MediaList;
+use crate::properties::animated_properties::AnimationValue;
+use crate::properties::{ComputedValues, PropertyDeclarationBlock};
+use crate::shared_lock::Locked;
+use crate::stylesheets::keyframes_rule::Keyframe;
+use crate::stylesheets::{
+    ContainerRule, CounterStyleRule, CssRules, DocumentRule, FontFaceRule, FontFeatureValuesRule,
+    FontPaletteValuesRule, ImportRule, KeyframesRule, LayerBlockRule, LayerStatementRule,
+    MediaRule, NamespaceRule, PageRule, PropertyRule, StyleRule, StylesheetContents, SupportsRule,
+};
+use servo_arc::Arc;
+
+macro_rules! impl_simple_arc_ffi {
+    ($ty:ty, $addref:ident, $release:ident) => {
+        #[no_mangle]
+        pub unsafe extern "C" fn $addref(obj: *const $ty) {
+            std::mem::forget(Arc::from_raw_addrefed(obj));
+        }
+
+        #[no_mangle]
+        pub unsafe extern "C" fn $release(obj: *const $ty) {
+            let _ = Arc::from_raw(obj);
+        }
+    };
+}
+
+macro_rules! impl_locked_arc_ffi {
+    ($servo_type:ty, $alias:ident, $addref:ident, $release:ident) => {
+        /// A simple alias for a locked type.
+        pub type $alias = Locked<$servo_type>;
+        impl_simple_arc_ffi!($alias, $addref, $release);
+    };
+}
+
+impl_locked_arc_ffi!(
+    CssRules,
+    LockedCssRules,
+    Servo_CssRules_AddRef,
+    Servo_CssRules_Release
+);
+impl_locked_arc_ffi!(
+    PropertyDeclarationBlock,
+    LockedDeclarationBlock,
+    Servo_DeclarationBlock_AddRef,
+    Servo_DeclarationBlock_Release
+);
+impl_locked_arc_ffi!(
+    StyleRule,
+    LockedStyleRule,
+    Servo_StyleRule_AddRef,
+    Servo_StyleRule_Release
+);
+impl_locked_arc_ffi!(
+    ImportRule,
+    LockedImportRule,
+    Servo_ImportRule_AddRef,
+    Servo_ImportRule_Release
+);
+impl_locked_arc_ffi!(
+    Keyframe,
+    LockedKeyframe,
+    Servo_Keyframe_AddRef,
+    Servo_Keyframe_Release
+);
+impl_locked_arc_ffi!(
+    KeyframesRule,
+    LockedKeyframesRule,
+    Servo_KeyframesRule_AddRef,
+    Servo_KeyframesRule_Release
+);
+impl_simple_arc_ffi!(
+    LayerBlockRule,
+    Servo_LayerBlockRule_AddRef,
+    Servo_LayerBlockRule_Release
+);
+impl_simple_arc_ffi!(
+    LayerStatementRule,
+    Servo_LayerStatementRule_AddRef,
+    Servo_LayerStatementRule_Release
+);
+impl_locked_arc_ffi!(
+    MediaList,
+    LockedMediaList,
+    Servo_MediaList_AddRef,
+    Servo_MediaList_Release
+);
+impl_simple_arc_ffi!(MediaRule, Servo_MediaRule_AddRef, Servo_MediaRule_Release);
+impl_simple_arc_ffi!(
+    NamespaceRule,
+    Servo_NamespaceRule_AddRef,
+    Servo_NamespaceRule_Release
+);
+impl_locked_arc_ffi!(
+    PageRule,
+    LockedPageRule,
+    Servo_PageRule_AddRef,
+    Servo_PageRule_Release
+);
+impl_simple_arc_ffi!(
+    PropertyRule,
+    Servo_PropertyRule_AddRef,
+    Servo_PropertyRule_Release
+);
+impl_simple_arc_ffi!(
+    SupportsRule,
+    Servo_SupportsRule_AddRef,
+    Servo_SupportsRule_Release
+);
+impl_simple_arc_ffi!(
+    ContainerRule,
+    Servo_ContainerRule_AddRef,
+    Servo_ContainerRule_Release
+);
+impl_simple_arc_ffi!(
+    DocumentRule,
+    Servo_DocumentRule_AddRef,
+    Servo_DocumentRule_Release
+);
+impl_simple_arc_ffi!(
+    FontFeatureValuesRule,
+    Servo_FontFeatureValuesRule_AddRef,
+    Servo_FontFeatureValuesRule_Release
+);
+impl_simple_arc_ffi!(
+    FontPaletteValuesRule,
+    Servo_FontPaletteValuesRule_AddRef,
+    Servo_FontPaletteValuesRule_Release
+);
+impl_locked_arc_ffi!(
+    FontFaceRule,
+    LockedFontFaceRule,
+    Servo_FontFaceRule_AddRef,
+    Servo_FontFaceRule_Release
+);
+impl_locked_arc_ffi!(
+    CounterStyleRule,
+    LockedCounterStyleRule,
+    Servo_CounterStyleRule_AddRef,
+    Servo_CounterStyleRule_Release
+);
+
+impl_simple_arc_ffi!(
+    StylesheetContents,
+    Servo_StyleSheetContents_AddRef,
+    Servo_StyleSheetContents_Release
+);
+impl_simple_arc_ffi!(
+    CssUrlData,
+    Servo_CssUrlData_AddRef,
+    Servo_CssUrlData_Release
+);
+impl_simple_arc_ffi!(
+    ComputedValues,
+    Servo_ComputedStyle_AddRef,
+    Servo_ComputedStyle_Release
+);
+impl_simple_arc_ffi!(
+    AnimationValue,
+    Servo_AnimationValue_AddRef,
+    Servo_AnimationValue_Release
+);