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-rw-r--r--components/script/dom/bindings/codegen/CodegenRust.py6
-rw-r--r--components/script/dom/testbinding.rs4
-rw-r--r--components/script/dom/webidls/TestBinding.webidl1
3 files changed, 10 insertions, 1 deletions
diff --git a/components/script/dom/bindings/codegen/CodegenRust.py b/components/script/dom/bindings/codegen/CodegenRust.py
index b184cce76b2..73dfb4294f1 100644
--- a/components/script/dom/bindings/codegen/CodegenRust.py
+++ b/components/script/dom/bindings/codegen/CodegenRust.py
@@ -722,6 +722,9 @@ def getJSToNativeConversionInfo(type, descriptorProvider, failureCode=None,
if type.nullable():
declType = CGWrapper(declType, pre="Option<", post=" >")
+ if isMember != "Dictionary" and type_needs_tracing(type):
+ declType = CGTemplatedType("RootedTraceableBox", declType)
+
templateBody = ("match FromJSValConvertible::from_jsval(cx, ${val}, ()) {\n"
" Ok(ConversionResult::Success(value)) => value,\n"
" Ok(ConversionResult::Failure(error)) => {\n"
@@ -6196,6 +6199,9 @@ def type_needs_tracing(t):
if t.isSequence():
return type_needs_tracing(t.inner)
+ if t.isUnion():
+ return any(type_needs_tracing(member) for member in t.flatMemberTypes)
+
return False
if t.isDictionary():
diff --git a/components/script/dom/testbinding.rs b/components/script/dom/testbinding.rs
index 1582647ca33..d9defc53770 100644
--- a/components/script/dom/testbinding.rs
+++ b/components/script/dom/testbinding.rs
@@ -435,7 +435,9 @@ impl TestBindingMethods for TestBinding {
fn PassUnion6(&self, _: UnsignedLongOrBoolean) {}
fn PassUnion7(&self, _: StringSequenceOrUnsignedLong) {}
fn PassUnion8(&self, _: ByteStringSequenceOrLong) {}
- fn PassUnion9(&self, _: UnionTypes::TestDictionaryOrLong) {}
+ fn PassUnion9(&self, _: RootedTraceableBox<UnionTypes::TestDictionaryOrLong>) {}
+ #[allow(unsafe_code)]
+ unsafe fn PassUnion10(&self, _: *mut JSContext, _: RootedTraceableBox<UnionTypes::StringOrObject>) {}
fn PassUnionWithTypedef(&self, _: DocumentOrTestTypedef) {}
fn PassUnionWithTypedef2(&self, _: LongSequenceOrTestTypedef) {}
#[allow(unsafe_code)]
diff --git a/components/script/dom/webidls/TestBinding.webidl b/components/script/dom/webidls/TestBinding.webidl
index fc6d4771366..74216947917 100644
--- a/components/script/dom/webidls/TestBinding.webidl
+++ b/components/script/dom/webidls/TestBinding.webidl
@@ -246,6 +246,7 @@ interface TestBinding {
void passUnion7((sequence<DOMString> or unsigned long) arg);
void passUnion8((sequence<ByteString> or long) arg);
void passUnion9((TestDictionary or long) arg);
+ void passUnion10((DOMString or object) arg);
void passUnionWithTypedef((Document or TestTypedef) arg);
void passUnionWithTypedef2((sequence<long> or TestTypedef) arg);
void passAny(any arg);