stylo: Add sugar for nsCSSShadowArray

ports/geckolib/binding_tools/regen.py

@@ -143,7 +143,7 @@ COMPILATION_TARGETS = {
             "nsChangeHint", "SheetParsingMode", "nsMainThreadPtrHandle",
             "nsMainThreadPtrHolder", "nscolor", "nsFont", "FontFamilyList",
             "FontFamilyType", "nsIAtom", "nsStyleContext", "StyleClipPath",
-            "StyleBasicShapeType", "StyleBasicShape"
+            "StyleBasicShapeType", "StyleBasicShape", "nsCSSShadowArray",
         ],
         "void_types": [
             "nsINode", "nsIDocument", "nsIPrincipal", "nsIURI",

ports/geckolib/gecko_bindings/bindings.rs

@@ -157,6 +157,7 @@ impl HeapSizeOf for nsStyleContext { fn heap_size_of_children(&self) -> usize {
 use structs::StyleClipPath;
 use structs::StyleBasicShapeType;
 use structs::StyleBasicShape;
+use structs::nsCSSShadowArray;
 
 pub type RawGeckoNode = nsINode;
 pub enum Element { }
@@ -345,6 +346,11 @@ extern "C" {
                                         max_len: u32);
     pub fn Gecko_AddRefCalcArbitraryThread(aPtr: *mut Calc);
     pub fn Gecko_ReleaseCalcArbitraryThread(aPtr: *mut Calc);
+    pub fn Gecko_NewCSSShadowArray(len: u32) -> *mut nsCSSShadowArray;
+    pub fn Gecko_AddRefCSSShadowArrayArbitraryThread(aPtr:
+                                                         *mut nsCSSShadowArray);
+    pub fn Gecko_ReleaseCSSShadowArrayArbitraryThread(aPtr:
+                                                          *mut nsCSSShadowArray);
     pub fn Gecko_Construct_nsStyleFont(ptr: *mut nsStyleFont);
     pub fn Gecko_CopyConstruct_nsStyleFont(ptr: *mut nsStyleFont,
                                            other: *const nsStyleFont);

ports/geckolib/gecko_bindings/structs_debug.rs

@@ -5917,14 +5917,13 @@ fn bindgen_test_layout_nsCSSShadowItem() {
 #[repr(C)]
 #[derive(Debug)]
 pub struct nsCSSShadowArray {
-    pub mRefCnt: nsAutoRefCnt,
-    pub _mOwningThread: nsAutoOwningThread,
+    pub mRefCnt: ThreadSafeAutoRefCnt,
     pub mLength: u32,
     pub mArray: [nsCSSShadowItem; 1usize],
 }
 #[test]
 fn bindgen_test_layout_nsCSSShadowArray() {
-    assert_eq!(::std::mem::size_of::<nsCSSShadowArray>() , 48usize);
+    assert_eq!(::std::mem::size_of::<nsCSSShadowArray>() , 40usize);
     assert_eq!(::std::mem::align_of::<nsCSSShadowArray>() , 8usize);
 }
 #[repr(C)]

ports/geckolib/gecko_bindings/structs_release.rs

@@ -5895,14 +5895,13 @@ fn bindgen_test_layout_nsCSSShadowItem() {
 #[repr(C)]
 #[derive(Debug)]
 pub struct nsCSSShadowArray {
-    pub mRefCnt: nsAutoRefCnt,
-    pub _mOwningThread: nsAutoOwningThread,
+    pub mRefCnt: ThreadSafeAutoRefCnt,
     pub mLength: u32,
     pub mArray: [nsCSSShadowItem; 1usize],
 }
 #[test]
 fn bindgen_test_layout_nsCSSShadowArray() {
-    assert_eq!(::std::mem::size_of::<nsCSSShadowArray>() , 48usize);
+    assert_eq!(::std::mem::size_of::<nsCSSShadowArray>() , 40usize);
     assert_eq!(::std::mem::align_of::<nsCSSShadowArray>() , 8usize);
 }
 #[repr(C)]

ports/geckolib/gecko_bindings/sugar/mod.rs

@@ -2,6 +2,7 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
+mod ns_css_shadow_array;
 mod ns_style_auto_array;
 pub mod ns_style_coord;
 mod ns_t_array;

ports/geckolib/gecko_bindings/sugar/ns_css_shadow_array.rs

@@ -0,0 +1,65 @@
+/* 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 http://mozilla.org/MPL/2.0/. */
+
+use bindings::Gecko_AddRefCSSShadowArrayArbitraryThread;
+use bindings::Gecko_NewCSSShadowArray;
+use bindings::Gecko_ReleaseCSSShadowArrayArbitraryThread;
+use std::ops::{Deref, DerefMut};
+use std::{ptr, slice};
+use structs::{nsCSSShadowArray, nsCSSShadowItem, RefPtr};
+
+impl RefPtr<nsCSSShadowArray> {
+    pub fn replace_with_new(&mut self, len: u32) {
+        unsafe {
+            if !self.mRawPtr.is_null() {
+                Gecko_ReleaseCSSShadowArrayArbitraryThread(self.mRawPtr);
+            }
+
+            self.mRawPtr = if len == 0 {
+                ptr::null_mut()
+            } else {
+                Gecko_NewCSSShadowArray(len)
+            }
+        }
+    }
+    pub fn copy_from(&mut self, other: &Self) {
+        unsafe {
+            if !self.mRawPtr.is_null() {
+                Gecko_ReleaseCSSShadowArrayArbitraryThread(self.mRawPtr);
+            }
+            if !other.mRawPtr.is_null() {
+                Gecko_AddRefCSSShadowArrayArbitraryThread(other.mRawPtr);
+            }
+
+            self.mRawPtr = other.mRawPtr;
+        }
+    }
+}
+
+impl Deref for RefPtr<nsCSSShadowArray> {
+    type Target = [nsCSSShadowItem];
+    fn deref(&self) -> &[nsCSSShadowItem] {
+        if self.mRawPtr.is_null() {
+            &[]
+        } else {
+            unsafe {
+                slice::from_raw_parts((*self.mRawPtr).mArray.as_ptr(),
+                                      (*self.mRawPtr).mLength as usize)
+            }
+        }
+    }
+}
+
+impl DerefMut for RefPtr<nsCSSShadowArray> {
+    fn deref_mut(&mut self) -> &mut [nsCSSShadowItem] {
+        if self.mRawPtr.is_null() {
+            &mut []
+        } else {
+            unsafe {
+                slice::from_raw_parts_mut((*self.mRawPtr).mArray.as_mut_ptr(),
+                                          (*self.mRawPtr).mLength as usize)
+            }
+        }
+    }
+}