auto merge of #2101 : jdm/servo/newroot_rebase, r=Ms2ger

As described in #1764, this strategy uses the following properties:
* DOM members are `JS<T>` types. These cannot be used with being explicitly rooted, but they are required for compiler-derived trace hooks.
* Methods that take DOM type arguments receive `&[mut] JSRef<T>`. These are rooted value references that are cloneable but cannot escape.
* Methods that return DOM values use `Unrooted<T>`. These are values that may or may not be rooted elsewhere, but callers must root them in order to interact with them in any way. One unsoundness hole exists - `Unrooted` values must be rooted ASAP, or there exists the danger that JSAPI calls could be made that could cause the underlying JS value to be GCed.
* All methods are implemented on `JSRef<T>`, enforcing the requirement that all DOM values are rooted for the duration of a method call (with a few exceptions for layout-related code, which cannot root values and therefore interacts with `JS<T>` and `&T` values - this is safe under the assumption that layout code interacts with DOM nodes that are in the tree, therefore rooted, and does not run concurrently with content code)

1 files changed, 365 insertions, 179 deletions

diff --git a/src/components/script/dom/testbinding.rs b/src/components/script/dom/testbinding.rs
index 6283b5a350e..a860d1c3d0f 100644
--- a/src/components/script/dom/testbinding.rs
+++ b/src/components/script/dom/testbinding.rs
@@ -2,7 +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/. */
 
-use dom::bindings::js::JS;
+use dom::bindings::js::{JS, JSRef, Temporary};
 use dom::bindings::codegen::BindingDeclarations::TestBindingBinding;
 use dom::bindings::codegen::UnionTypes::HTMLElementOrLong;
 use self::TestBindingBinding::TestEnum;
@@ -22,184 +22,370 @@ pub struct TestBinding {
     pub window: JS<Window>,
 }
 
-impl TestBinding {
-    pub fn BooleanAttribute(&self) -> bool { false }
-    pub fn SetBooleanAttribute(&self, _: bool) {}
-    pub fn ByteAttribute(&self) -> i8 { 0 }
-    pub fn SetByteAttribute(&self, _: i8) {}
-    pub fn OctetAttribute(&self) -> u8 { 0 }
-    pub fn SetOctetAttribute(&self, _: u8) {}
-    pub fn ShortAttribute(&self) -> i16 { 0 }
-    pub fn SetShortAttribute(&self, _: i16) {}
-    pub fn UnsignedShortAttribute(&self) -> u16 { 0 }
-    pub fn SetUnsignedShortAttribute(&self, _: u16) {}
-    pub fn LongAttribute(&self) -> i32 { 0 }
-    pub fn SetLongAttribute(&self, _: i32) {}
-    pub fn UnsignedLongAttribute(&self) -> u32 { 0 }
-    pub fn SetUnsignedLongAttribute(&self, _: u32) {}
-    pub fn LongLongAttribute(&self) -> i64 { 0 }
-    pub fn SetLongLongAttribute(&self, _: i64) {}
-    pub fn UnsignedLongLongAttribute(&self) -> u64 { 0 }
-    pub fn SetUnsignedLongLongAttribute(&self, _: u64) {}
-    pub fn FloatAttribute(&self) -> f32 { 0. }
-    pub fn SetFloatAttribute(&self, _: f32) {}
-    pub fn DoubleAttribute(&self) -> f64 { 0. }
-    pub fn SetDoubleAttribute(&self, _: f64) {}
-    pub fn StringAttribute(&self) -> DOMString { ~"" }
-    pub fn SetStringAttribute(&self, _: DOMString) {}
-    pub fn ByteStringAttribute(&self) -> ByteString { ByteString::new(vec!()) }
-    pub fn SetByteStringAttribute(&self, _: ByteString) {}
-    pub fn EnumAttribute(&self) -> TestEnum { _empty }
-    pub fn SetEnumAttribute(&self, _: TestEnum) {}
-    pub fn InterfaceAttribute(&self) -> JS<Blob> { Blob::new(&self.window) }
-    pub fn SetInterfaceAttribute(&self, _: &JS<Blob>) {}
-    pub fn AnyAttribute(&self, _: *JSContext) -> JSVal { NullValue() }
-    pub fn SetAnyAttribute(&self, _: *JSContext, _: JSVal) {}
-
-    pub fn GetBooleanAttributeNullable(&self) -> Option<bool> { Some(false) }
-    pub fn SetBooleanAttributeNullable(&self, _: Option<bool>) {}
-    pub fn GetByteAttributeNullable(&self) -> Option<i8> { Some(0) }
-    pub fn SetByteAttributeNullable(&self, _: Option<i8>) {}
-    pub fn GetOctetAttributeNullable(&self) -> Option<u8> { Some(0) }
-    pub fn SetOctetAttributeNullable(&self, _: Option<u8>) {}
-    pub fn GetShortAttributeNullable(&self) -> Option<i16> { Some(0) }
-    pub fn SetShortAttributeNullable(&self, _: Option<i16>) {}
-    pub fn GetUnsignedShortAttributeNullable(&self) -> Option<u16> { Some(0) }
-    pub fn SetUnsignedShortAttributeNullable(&self, _: Option<u16>) {}
-    pub fn GetLongAttributeNullable(&self) -> Option<i32> { Some(0) }
-    pub fn SetLongAttributeNullable(&self, _: Option<i32>) {}
-    pub fn GetUnsignedLongAttributeNullable(&self) -> Option<u32> { Some(0) }
-    pub fn SetUnsignedLongAttributeNullable(&self, _: Option<u32>) {}
-    pub fn GetLongLongAttributeNullable(&self) -> Option<i64> { Some(0) }
-    pub fn SetLongLongAttributeNullable(&self, _: Option<i64>) {}
-    pub fn GetUnsignedLongLongAttributeNullable(&self) -> Option<u64> { Some(0) }
-    pub fn SetUnsignedLongLongAttributeNullable(&self, _: Option<u64>) {}
-    pub fn GetFloatAttributeNullable(&self) -> Option<f32> { Some(0.) }
-    pub fn SetFloatAttributeNullable(&self, _: Option<f32>) {}
-    pub fn GetDoubleAttributeNullable(&self) -> Option<f64> { Some(0.) }
-    pub fn SetDoubleAttributeNullable(&self, _: Option<f64>) {}
-    pub fn GetByteStringAttributeNullable(&self) -> Option<ByteString> { Some(ByteString::new(vec!())) }
-    pub fn SetByteStringAttributeNullable(&self, _: Option<ByteString>) {}
-    pub fn GetStringAttributeNullable(&self) -> Option<DOMString> { Some(~"") }
-    pub fn SetStringAttributeNullable(&self, _: Option<DOMString>) {}
-    pub fn GetEnumAttributeNullable(&self) -> Option<TestEnum> { Some(_empty) }
-    pub fn GetInterfaceAttributeNullable(&self) -> Option<JS<Blob>> { Some(Blob::new(&self.window)) }
-    pub fn SetInterfaceAttributeNullable(&self, _: Option<JS<Blob>>) {}
-
-    pub fn PassBoolean(&self, _: bool) {}
-    pub fn PassByte(&self, _: i8) {}
-    pub fn PassOctet(&self, _: u8) {}
-    pub fn PassShort(&self, _: i16) {}
-    pub fn PassUnsignedShort(&self, _: u16) {}
-    pub fn PassLong(&self, _: i32) {}
-    pub fn PassUnsignedLong(&self, _: u32) {}
-    pub fn PassLongLong(&self, _: i64) {}
-    pub fn PassUnsignedLongLong(&self, _: u64) {}
-    pub fn PassFloat(&self, _: f32) {}
-    pub fn PassDouble(&self, _: f64) {}
-    pub fn PassString(&self, _: DOMString) {}
-    pub fn PassByteString(&self, _: ByteString) {}
-    pub fn PassEnum(&self, _: TestEnum) {}
-    pub fn PassInterface(&self, _: &JS<Blob>) {}
-    pub fn PassUnion(&self, _: HTMLElementOrLong) {}
-    pub fn PassAny(&self, _: *JSContext, _: JSVal) {}
-
-    pub fn PassNullableBoolean(&self, _: Option<bool>) {}
-    pub fn PassNullableByte(&self, _: Option<i8>) {}
-    pub fn PassNullableOctet(&self, _: Option<u8>) {}
-    pub fn PassNullableShort(&self, _: Option<i16>) {}
-    pub fn PassNullableUnsignedShort(&self, _: Option<u16>) {}
-    pub fn PassNullableLong(&self, _: Option<i32>) {}
-    pub fn PassNullableUnsignedLong(&self, _: Option<u32>) {}
-    pub fn PassNullableLongLong(&self, _: Option<i64>) {}
-    pub fn PassNullableUnsignedLongLong(&self, _: Option<u64>) {}
-    pub fn PassNullableFloat(&self, _: Option<f32>) {}
-    pub fn PassNullableDouble(&self, _: Option<f64>) {}
-    pub fn PassNullableString(&self, _: Option<DOMString>) {}
-    pub fn PassNullableByteString(&self, _: Option<ByteString>) {}
-    // pub fn PassNullableEnum(&self, _: Option<TestEnum>) {}
-    pub fn PassNullableInterface(&self, _: Option<JS<Blob>>) {}
-    pub fn PassNullableUnion(&self, _: Option<HTMLElementOrLong>) {}
-    pub fn PassNullableAny(&self, _: *JSContext, _: Option<JSVal>) {}
-
-    pub fn PassOptionalBoolean(&self, _: Option<bool>) {}
-    pub fn PassOptionalByte(&self, _: Option<i8>) {}
-    pub fn PassOptionalOctet(&self, _: Option<u8>) {}
-    pub fn PassOptionalShort(&self, _: Option<i16>) {}
-    pub fn PassOptionalUnsignedShort(&self, _: Option<u16>) {}
-    pub fn PassOptionalLong(&self, _: Option<i32>) {}
-    pub fn PassOptionalUnsignedLong(&self, _: Option<u32>) {}
-    pub fn PassOptionalLongLong(&self, _: Option<i64>) {}
-    pub fn PassOptionalUnsignedLongLong(&self, _: Option<u64>) {}
-    pub fn PassOptionalFloat(&self, _: Option<f32>) {}
-    pub fn PassOptionalDouble(&self, _: Option<f64>) {}
-    pub fn PassOptionalString(&self, _: Option<DOMString>) {}
-    pub fn PassOptionalByteString(&self, _: Option<ByteString>) {}
-    pub fn PassOptionalEnum(&self, _: Option<TestEnum>) {}
-    pub fn PassOptionalInterface(&self, _: Option<JS<Blob>>) {}
-    pub fn PassOptionalUnion(&self, _: Option<HTMLElementOrLong>) {}
-    pub fn PassOptionalAny(&self, _: *JSContext, _: Option<JSVal>) {}
-
-    pub fn PassOptionalNullableBoolean(&self, _: Option<Option<bool>>) {}
-    pub fn PassOptionalNullableByte(&self, _: Option<Option<i8>>) {}
-    pub fn PassOptionalNullableOctet(&self, _: Option<Option<u8>>) {}
-    pub fn PassOptionalNullableShort(&self, _: Option<Option<i16>>) {}
-    pub fn PassOptionalNullableUnsignedShort(&self, _: Option<Option<u16>>) {}
-    pub fn PassOptionalNullableLong(&self, _: Option<Option<i32>>) {}
-    pub fn PassOptionalNullableUnsignedLong(&self, _: Option<Option<u32>>) {}
-    pub fn PassOptionalNullableLongLong(&self, _: Option<Option<i64>>) {}
-    pub fn PassOptionalNullableUnsignedLongLong(&self, _: Option<Option<u64>>) {}
-    pub fn PassOptionalNullableFloat(&self, _: Option<Option<f32>>) {}
-    pub fn PassOptionalNullableDouble(&self, _: Option<Option<f64>>) {}
-    pub fn PassOptionalNullableString(&self, _: Option<Option<DOMString>>) {}
-    pub fn PassOptionalNullableByteString(&self, _: Option<Option<ByteString>>) {}
-    // pub fn PassOptionalNullableEnum(&self, _: Option<Option<TestEnum>>) {}
-    pub fn PassOptionalNullableInterface(&self, _: Option<Option<JS<Blob>>>) {}
-    pub fn PassOptionalNullableUnion(&self, _: Option<Option<HTMLElementOrLong>>) {}
-
-    pub fn PassOptionalBooleanWithDefault(&self, _: bool) {}
-    pub fn PassOptionalByteWithDefault(&self, _: i8) {}
-    pub fn PassOptionalOctetWithDefault(&self, _: u8) {}
-    pub fn PassOptionalShortWithDefault(&self, _: i16) {}
-    pub fn PassOptionalUnsignedShortWithDefault(&self, _: u16) {}
-    pub fn PassOptionalLongWithDefault(&self, _: i32) {}
-    pub fn PassOptionalUnsignedLongWithDefault(&self, _: u32) {}
-    pub fn PassOptionalLongLongWithDefault(&self, _: i64) {}
-    pub fn PassOptionalUnsignedLongLongWithDefault(&self, _: u64) {}
-    pub fn PassOptionalStringWithDefault(&self, _: DOMString) {}
-    pub fn PassOptionalEnumWithDefault(&self, _: TestEnum) {}
-
-    pub fn PassOptionalNullableBooleanWithDefault(&self, _: Option<bool>) {}
-    pub fn PassOptionalNullableByteWithDefault(&self, _: Option<i8>) {}
-    pub fn PassOptionalNullableOctetWithDefault(&self, _: Option<u8>) {}
-    pub fn PassOptionalNullableShortWithDefault(&self, _: Option<i16>) {}
-    pub fn PassOptionalNullableUnsignedShortWithDefault(&self, _: Option<u16>) {}
-    pub fn PassOptionalNullableLongWithDefault(&self, _: Option<i32>) {}
-    pub fn PassOptionalNullableUnsignedLongWithDefault(&self, _: Option<u32>) {}
-    pub fn PassOptionalNullableLongLongWithDefault(&self, _: Option<i64>) {}
-    pub fn PassOptionalNullableUnsignedLongLongWithDefault(&self, _: Option<u64>) {}
-    pub fn PassOptionalNullableFloatWithDefault(&self, _: Option<f32>) {}
-    pub fn PassOptionalNullableDoubleWithDefault(&self, _: Option<f64>) {}
-    pub fn PassOptionalNullableStringWithDefault(&self, _: Option<DOMString>) {}
-    pub fn PassOptionalNullableByteStringWithDefault(&self, _: Option<ByteString>) {}
-    // pub fn PassOptionalNullableEnumWithDefault(&self, _: Option<TestEnum>) {}
-    pub fn PassOptionalNullableInterfaceWithDefault(&self, _: Option<JS<Blob>>) {}
-    pub fn PassOptionalNullableUnionWithDefault(&self, _: Option<HTMLElementOrLong>) {}
-    pub fn PassOptionalAnyWithDefault(&self, _: *JSContext, _: JSVal) {}
-
-    pub fn PassOptionalNullableBooleanWithNonNullDefault(&self, _: Option<bool>) {}
-    pub fn PassOptionalNullableByteWithNonNullDefault(&self, _: Option<i8>) {}
-    pub fn PassOptionalNullableOctetWithNonNullDefault(&self, _: Option<u8>) {}
-    pub fn PassOptionalNullableShortWithNonNullDefault(&self, _: Option<i16>) {}
-    pub fn PassOptionalNullableUnsignedShortWithNonNullDefault(&self, _: Option<u16>) {}
-    pub fn PassOptionalNullableLongWithNonNullDefault(&self, _: Option<i32>) {}
-    pub fn PassOptionalNullableUnsignedLongWithNonNullDefault(&self, _: Option<u32>) {}
-    pub fn PassOptionalNullableLongLongWithNonNullDefault(&self, _: Option<i64>) {}
-    pub fn PassOptionalNullableUnsignedLongLongWithNonNullDefault(&self, _: Option<u64>) {}
-    // pub fn PassOptionalNullableFloatWithNonNullDefault(&self, _: Option<f32>) {}
-    // pub fn PassOptionalNullableDoubleWithNonNullDefault(&self, _: Option<f64>) {}
-    pub fn PassOptionalNullableStringWithNonNullDefault(&self, _: Option<DOMString>) {}
-    // pub fn PassOptionalNullableEnumWithNonNullDefault(&self, _: Option<TestEnum>) {}
+pub trait TestBindingMethods {
+    fn BooleanAttribute(&self) -> bool;
+    fn SetBooleanAttribute(&self, _: bool);
+    fn ByteAttribute(&self) -> i8;
+    fn SetByteAttribute(&self, _: i8);
+    fn OctetAttribute(&self) -> u8;
+    fn SetOctetAttribute(&self, _: u8);
+    fn ShortAttribute(&self) -> i16;
+    fn SetShortAttribute(&self, _: i16);
+    fn UnsignedShortAttribute(&self) -> u16;
+    fn SetUnsignedShortAttribute(&self, _: u16);
+    fn LongAttribute(&self) -> i32;
+    fn SetLongAttribute(&self, _: i32);
+    fn UnsignedLongAttribute(&self) -> u32;
+    fn SetUnsignedLongAttribute(&self, _: u32);
+    fn LongLongAttribute(&self) -> i64;
+    fn SetLongLongAttribute(&self, _: i64);
+    fn UnsignedLongLongAttribute(&self) -> u64;
+    fn SetUnsignedLongLongAttribute(&self, _: u64);
+    fn FloatAttribute(&self) -> f32;
+    fn SetFloatAttribute(&self, _: f32);
+    fn DoubleAttribute(&self) -> f64;
+    fn SetDoubleAttribute(&self, _: f64);
+    fn StringAttribute(&self) -> DOMString;
+    fn SetStringAttribute(&self, _: DOMString);
+    fn ByteStringAttribute(&self) -> ByteString;
+    fn SetByteStringAttribute(&self, _: ByteString);
+    fn EnumAttribute(&self) -> TestEnum;
+    fn SetEnumAttribute(&self, _: TestEnum);
+    fn InterfaceAttribute(&self) -> Temporary<Blob>;
+    fn SetInterfaceAttribute(&self, _: &JSRef<Blob>);
+    fn AnyAttribute(&self, _: *JSContext) -> JSVal;
+    fn SetAnyAttribute(&self, _: *JSContext, _: JSVal);
+
+    fn GetBooleanAttributeNullable(&self) -> Option<bool>;
+    fn SetBooleanAttributeNullable(&self, _: Option<bool>);
+    fn GetByteAttributeNullable(&self) -> Option<i8>;
+    fn SetByteAttributeNullable(&self, _: Option<i8>);
+    fn GetOctetAttributeNullable(&self) -> Option<u8>;
+    fn SetOctetAttributeNullable(&self, _: Option<u8>);
+    fn GetShortAttributeNullable(&self) -> Option<i16>;
+    fn SetShortAttributeNullable(&self, _: Option<i16>);
+    fn GetUnsignedShortAttributeNullable(&self) -> Option<u16>;
+    fn SetUnsignedShortAttributeNullable(&self, _: Option<u16>);
+    fn GetLongAttributeNullable(&self) -> Option<i32>;
+    fn SetLongAttributeNullable(&self, _: Option<i32>);
+    fn GetUnsignedLongAttributeNullable(&self) -> Option<u32>;
+    fn SetUnsignedLongAttributeNullable(&self, _: Option<u32>);
+    fn GetLongLongAttributeNullable(&self) -> Option<i64>;
+    fn SetLongLongAttributeNullable(&self, _: Option<i64>);
+    fn GetUnsignedLongLongAttributeNullable(&self) -> Option<u64>;
+    fn SetUnsignedLongLongAttributeNullable(&self, _: Option<u64>);
+    fn GetFloatAttributeNullable(&self) -> Option<f32>;
+    fn SetFloatAttributeNullable(&self, _: Option<f32>);
+    fn GetDoubleAttributeNullable(&self) -> Option<f64>;
+    fn SetDoubleAttributeNullable(&self, _: Option<f64>);
+    fn GetByteStringAttributeNullable(&self) -> Option<ByteString>;
+    fn SetByteStringAttributeNullable(&self, _: Option<ByteString>);
+    fn GetStringAttributeNullable(&self) -> Option<DOMString>;
+    fn SetStringAttributeNullable(&self, _: Option<DOMString>);
+    fn GetEnumAttributeNullable(&self) -> Option<TestEnum>;
+    fn GetInterfaceAttributeNullable(&self) -> Option<Temporary<Blob>>;
+    fn SetInterfaceAttributeNullable(&self, _: Option<JSRef<Blob>>);
+
+    fn PassBoolean(&self, _: bool);
+    fn PassByte(&self, _: i8);
+    fn PassOctet(&self, _: u8);
+    fn PassShort(&self, _: i16);
+    fn PassUnsignedShort(&self, _: u16);
+    fn PassLong(&self, _: i32);
+    fn PassUnsignedLong(&self, _: u32);
+    fn PassLongLong(&self, _: i64);
+    fn PassUnsignedLongLong(&self, _: u64);
+    fn PassFloat(&self, _: f32);
+    fn PassDouble(&self, _: f64);
+    fn PassString(&self, _: DOMString);
+    fn PassByteString(&self, _: ByteString);
+    fn PassEnum(&self, _: TestEnum);
+    fn PassInterface(&self, _: &JSRef<Blob>);
+    fn PassUnion(&self, _: HTMLElementOrLong);
+    fn PassAny(&self, _: *JSContext, _: JSVal);
+
+    fn PassNullableBoolean(&self, _: Option<bool>);
+    fn PassNullableByte(&self, _: Option<i8>);
+    fn PassNullableOctet(&self, _: Option<u8>);
+    fn PassNullableShort(&self, _: Option<i16>);
+    fn PassNullableUnsignedShort(&self, _: Option<u16>);
+    fn PassNullableLong(&self, _: Option<i32>);
+    fn PassNullableUnsignedLong(&self, _: Option<u32>);
+    fn PassNullableLongLong(&self, _: Option<i64>);
+    fn PassNullableUnsignedLongLong(&self, _: Option<u64>);
+    fn PassNullableFloat(&self, _: Option<f32>);
+    fn PassNullableDouble(&self, _: Option<f64>);
+    fn PassNullableString(&self, _: Option<DOMString>);
+    fn PassNullableByteString(&self, _: Option<ByteString>) {}
+    // fn PassNullableEnum(&self, _: Option<TestEnum>);
+    fn PassNullableInterface(&self, _: Option<JSRef<Blob>>);
+    fn PassNullableUnion(&self, _: Option<HTMLElementOrLong>);
+    fn PassNullableAny(&self, _: *JSContext, _: Option<JSVal>);
+
+    fn PassOptionalBoolean(&self, _: Option<bool>);
+    fn PassOptionalByte(&self, _: Option<i8>);
+    fn PassOptionalOctet(&self, _: Option<u8>);
+    fn PassOptionalShort(&self, _: Option<i16>);
+    fn PassOptionalUnsignedShort(&self, _: Option<u16>);
+    fn PassOptionalLong(&self, _: Option<i32>);
+    fn PassOptionalUnsignedLong(&self, _: Option<u32>);
+    fn PassOptionalLongLong(&self, _: Option<i64>);
+    fn PassOptionalUnsignedLongLong(&self, _: Option<u64>);
+    fn PassOptionalFloat(&self, _: Option<f32>);
+    fn PassOptionalDouble(&self, _: Option<f64>);
+    fn PassOptionalString(&self, _: Option<DOMString>);
+    fn PassOptionalByteString(&self, _: Option<ByteString>) {}
+    fn PassOptionalEnum(&self, _: Option<TestEnum>);
+    fn PassOptionalInterface(&self, _: Option<JSRef<Blob>>);
+    fn PassOptionalUnion(&self, _: Option<HTMLElementOrLong>);
+    fn PassOptionalAny(&self, _: *JSContext, _: Option<JSVal>);
+
+    fn PassOptionalNullableBoolean(&self, _: Option<Option<bool>>);
+    fn PassOptionalNullableByte(&self, _: Option<Option<i8>>);
+    fn PassOptionalNullableOctet(&self, _: Option<Option<u8>>);
+    fn PassOptionalNullableShort(&self, _: Option<Option<i16>>);
+    fn PassOptionalNullableUnsignedShort(&self, _: Option<Option<u16>>);
+    fn PassOptionalNullableLong(&self, _: Option<Option<i32>>);
+    fn PassOptionalNullableUnsignedLong(&self, _: Option<Option<u32>>);
+    fn PassOptionalNullableLongLong(&self, _: Option<Option<i64>>);
+    fn PassOptionalNullableUnsignedLongLong(&self, _: Option<Option<u64>>);
+    fn PassOptionalNullableFloat(&self, _: Option<Option<f32>>);
+    fn PassOptionalNullableDouble(&self, _: Option<Option<f64>>);
+    fn PassOptionalNullableString(&self, _: Option<Option<DOMString>>);
+    fn PassOptionalNullableByteString(&self, _: Option<Option<ByteString>>) {}
+    // fn PassOptionalNullableEnum(&self, _: Option<Option<TestEnum>>);
+    fn PassOptionalNullableInterface(&self, _: Option<Option<JSRef<Blob>>>);
+    fn PassOptionalNullableUnion(&self, _: Option<Option<HTMLElementOrLong>>);
+
+    fn PassOptionalBooleanWithDefault(&self, _: bool);
+    fn PassOptionalByteWithDefault(&self, _: i8);
+    fn PassOptionalOctetWithDefault(&self, _: u8);
+    fn PassOptionalShortWithDefault(&self, _: i16);
+    fn PassOptionalUnsignedShortWithDefault(&self, _: u16);
+    fn PassOptionalLongWithDefault(&self, _: i32);
+    fn PassOptionalUnsignedLongWithDefault(&self, _: u32);
+    fn PassOptionalLongLongWithDefault(&self, _: i64);
+    fn PassOptionalUnsignedLongLongWithDefault(&self, _: u64);
+    fn PassOptionalStringWithDefault(&self, _: DOMString);
+    fn PassOptionalEnumWithDefault(&self, _: TestEnum);
+
+    fn PassOptionalNullableBooleanWithDefault(&self, _: Option<bool>);
+    fn PassOptionalNullableByteWithDefault(&self, _: Option<i8>);
+    fn PassOptionalNullableOctetWithDefault(&self, _: Option<u8>);
+    fn PassOptionalNullableShortWithDefault(&self, _: Option<i16>);
+    fn PassOptionalNullableUnsignedShortWithDefault(&self, _: Option<u16>);
+    fn PassOptionalNullableLongWithDefault(&self, _: Option<i32>);
+    fn PassOptionalNullableUnsignedLongWithDefault(&self, _: Option<u32>);
+    fn PassOptionalNullableLongLongWithDefault(&self, _: Option<i64>);
+    fn PassOptionalNullableUnsignedLongLongWithDefault(&self, _: Option<u64>);
+    fn PassOptionalNullableFloatWithDefault(&self, _: Option<f32>);
+    fn PassOptionalNullableDoubleWithDefault(&self, _: Option<f64>);
+    fn PassOptionalNullableStringWithDefault(&self, _: Option<DOMString>);
+    fn PassOptionalNullableByteStringWithDefault(&self, _: Option<ByteString>) {}
+    // fn PassOptionalNullableEnumWithDefault(&self, _: Option<TestEnum>);
+    fn PassOptionalNullableInterfaceWithDefault(&self, _: Option<JSRef<Blob>>);
+    fn PassOptionalNullableUnionWithDefault(&self, _: Option<HTMLElementOrLong>);
+    fn PassOptionalAnyWithDefault(&self, _: *JSContext, _: JSVal);
+
+    fn PassOptionalNullableBooleanWithNonNullDefault(&self, _: Option<bool>);
+    fn PassOptionalNullableByteWithNonNullDefault(&self, _: Option<i8>);
+    fn PassOptionalNullableOctetWithNonNullDefault(&self, _: Option<u8>);
+    fn PassOptionalNullableShortWithNonNullDefault(&self, _: Option<i16>);
+    fn PassOptionalNullableUnsignedShortWithNonNullDefault(&self, _: Option<u16>);
+    fn PassOptionalNullableLongWithNonNullDefault(&self, _: Option<i32>);
+    fn PassOptionalNullableUnsignedLongWithNonNullDefault(&self, _: Option<u32>);
+    fn PassOptionalNullableLongLongWithNonNullDefault(&self, _: Option<i64>);
+    fn PassOptionalNullableUnsignedLongLongWithNonNullDefault(&self, _: Option<u64>);
+    // fn PassOptionalNullableFloatWithNonNullDefault(&self, _: Option<f32>);
+    // fn PassOptionalNullableDoubleWithNonNullDefault(&self, _: Option<f64>);
+    fn PassOptionalNullableStringWithNonNullDefault(&self, _: Option<DOMString>);
+    // fn PassOptionalNullableEnumWithNonNullDefault(&self, _: Option<TestEnum>);
+}
+
+impl<'a> TestBindingMethods for JSRef<'a, TestBinding> {
+    fn BooleanAttribute(&self) -> bool { false }
+    fn SetBooleanAttribute(&self, _: bool) {}
+    fn ByteAttribute(&self) -> i8 { 0 }
+    fn SetByteAttribute(&self, _: i8) {}
+    fn OctetAttribute(&self) -> u8 { 0 }
+    fn SetOctetAttribute(&self, _: u8) {}
+    fn ShortAttribute(&self) -> i16 { 0 }
+    fn SetShortAttribute(&self, _: i16) {}
+    fn UnsignedShortAttribute(&self) -> u16 { 0 }
+    fn SetUnsignedShortAttribute(&self, _: u16) {}
+    fn LongAttribute(&self) -> i32 { 0 }
+    fn SetLongAttribute(&self, _: i32) {}
+    fn UnsignedLongAttribute(&self) -> u32 { 0 }
+    fn SetUnsignedLongAttribute(&self, _: u32) {}
+    fn LongLongAttribute(&self) -> i64 { 0 }
+    fn SetLongLongAttribute(&self, _: i64) {}
+    fn UnsignedLongLongAttribute(&self) -> u64 { 0 }
+    fn SetUnsignedLongLongAttribute(&self, _: u64) {}
+    fn FloatAttribute(&self) -> f32 { 0. }
+    fn SetFloatAttribute(&self, _: f32) {}
+    fn DoubleAttribute(&self) -> f64 { 0. }
+    fn SetDoubleAttribute(&self, _: f64) {}
+    fn StringAttribute(&self) -> DOMString { ~"" }
+    fn SetStringAttribute(&self, _: DOMString) {}
+    fn ByteStringAttribute(&self) -> ByteString { ByteString::new(vec!()) }
+    fn SetByteStringAttribute(&self, _: ByteString) {}
+    fn EnumAttribute(&self) -> TestEnum { _empty }
+    fn SetEnumAttribute(&self, _: TestEnum) {}
+    fn InterfaceAttribute(&self) -> Temporary<Blob> {
+        let window = self.window.root();
+        Blob::new(&*window)
+    }
+    fn SetInterfaceAttribute(&self, _: &JSRef<Blob>) {}
+    fn AnyAttribute(&self, _: *JSContext) -> JSVal { NullValue() }
+    fn SetAnyAttribute(&self, _: *JSContext, _: JSVal) {}
+
+    fn GetBooleanAttributeNullable(&self) -> Option<bool> { Some(false) }
+    fn SetBooleanAttributeNullable(&self, _: Option<bool>) {}
+    fn GetByteAttributeNullable(&self) -> Option<i8> { Some(0) }
+    fn SetByteAttributeNullable(&self, _: Option<i8>) {}
+    fn GetOctetAttributeNullable(&self) -> Option<u8> { Some(0) }
+    fn SetOctetAttributeNullable(&self, _: Option<u8>) {}
+    fn GetShortAttributeNullable(&self) -> Option<i16> { Some(0) }
+    fn SetShortAttributeNullable(&self, _: Option<i16>) {}
+    fn GetUnsignedShortAttributeNullable(&self) -> Option<u16> { Some(0) }
+    fn SetUnsignedShortAttributeNullable(&self, _: Option<u16>) {}
+    fn GetLongAttributeNullable(&self) -> Option<i32> { Some(0) }
+    fn SetLongAttributeNullable(&self, _: Option<i32>) {}
+    fn GetUnsignedLongAttributeNullable(&self) -> Option<u32> { Some(0) }
+    fn SetUnsignedLongAttributeNullable(&self, _: Option<u32>) {}
+    fn GetLongLongAttributeNullable(&self) -> Option<i64> { Some(0) }
+    fn SetLongLongAttributeNullable(&self, _: Option<i64>) {}
+    fn GetUnsignedLongLongAttributeNullable(&self) -> Option<u64> { Some(0) }
+    fn SetUnsignedLongLongAttributeNullable(&self, _: Option<u64>) {}
+    fn GetFloatAttributeNullable(&self) -> Option<f32> { Some(0.) }
+    fn SetFloatAttributeNullable(&self, _: Option<f32>) {}
+    fn GetDoubleAttributeNullable(&self) -> Option<f64> { Some(0.) }
+    fn SetDoubleAttributeNullable(&self, _: Option<f64>) {}
+    fn GetByteStringAttributeNullable(&self) -> Option<ByteString> { Some(ByteString::new(vec!())) }
+    fn SetByteStringAttributeNullable(&self, _: Option<ByteString>) {}
+    fn GetStringAttributeNullable(&self) -> Option<DOMString> { Some(~"") }
+    fn SetStringAttributeNullable(&self, _: Option<DOMString>) {}
+    fn GetEnumAttributeNullable(&self) -> Option<TestEnum> { Some(_empty) }
+    fn GetInterfaceAttributeNullable(&self) -> Option<Temporary<Blob>> {
+        let window = self.window.root();
+        Some(Blob::new(&*window))
+    }
+    fn SetInterfaceAttributeNullable(&self, _: Option<JSRef<Blob>>) {}
+
+    fn PassBoolean(&self, _: bool) {}
+    fn PassByte(&self, _: i8) {}
+    fn PassOctet(&self, _: u8) {}
+    fn PassShort(&self, _: i16) {}
+    fn PassUnsignedShort(&self, _: u16) {}
+    fn PassLong(&self, _: i32) {}
+    fn PassUnsignedLong(&self, _: u32) {}
+    fn PassLongLong(&self, _: i64) {}
+    fn PassUnsignedLongLong(&self, _: u64) {}
+    fn PassFloat(&self, _: f32) {}
+    fn PassDouble(&self, _: f64) {}
+    fn PassString(&self, _: DOMString) {}
+    fn PassByteString(&self, _: ByteString) {}
+    fn PassEnum(&self, _: TestEnum) {}
+    fn PassInterface(&self, _: &JSRef<Blob>) {}
+    fn PassUnion(&self, _: HTMLElementOrLong) {}
+    fn PassAny(&self, _: *JSContext, _: JSVal) {}
+
+    fn PassNullableBoolean(&self, _: Option<bool>) {}
+    fn PassNullableByte(&self, _: Option<i8>) {}
+    fn PassNullableOctet(&self, _: Option<u8>) {}
+    fn PassNullableShort(&self, _: Option<i16>) {}
+    fn PassNullableUnsignedShort(&self, _: Option<u16>) {}
+    fn PassNullableLong(&self, _: Option<i32>) {}
+    fn PassNullableUnsignedLong(&self, _: Option<u32>) {}
+    fn PassNullableLongLong(&self, _: Option<i64>) {}
+    fn PassNullableUnsignedLongLong(&self, _: Option<u64>) {}
+    fn PassNullableFloat(&self, _: Option<f32>) {}
+    fn PassNullableDouble(&self, _: Option<f64>) {}
+    fn PassNullableString(&self, _: Option<DOMString>) {}
+    fn PassNullableByteString(&self, _: Option<ByteString>) {}
+    // fn PassNullableEnum(&self, _: Option<TestEnum>) {}
+    fn PassNullableInterface(&self, _: Option<JSRef<Blob>>) {}
+    fn PassNullableUnion(&self, _: Option<HTMLElementOrLong>) {}
+    fn PassNullableAny(&self, _: *JSContext, _: Option<JSVal>) {}
+
+    fn PassOptionalBoolean(&self, _: Option<bool>) {}
+    fn PassOptionalByte(&self, _: Option<i8>) {}
+    fn PassOptionalOctet(&self, _: Option<u8>) {}
+    fn PassOptionalShort(&self, _: Option<i16>) {}
+    fn PassOptionalUnsignedShort(&self, _: Option<u16>) {}
+    fn PassOptionalLong(&self, _: Option<i32>) {}
+    fn PassOptionalUnsignedLong(&self, _: Option<u32>) {}
+    fn PassOptionalLongLong(&self, _: Option<i64>) {}
+    fn PassOptionalUnsignedLongLong(&self, _: Option<u64>) {}
+    fn PassOptionalFloat(&self, _: Option<f32>) {}
+    fn PassOptionalDouble(&self, _: Option<f64>) {}
+    fn PassOptionalString(&self, _: Option<DOMString>) {}
+    fn PassOptionalByteString(&self, _: Option<ByteString>) {}
+    fn PassOptionalEnum(&self, _: Option<TestEnum>) {}
+    fn PassOptionalInterface(&self, _: Option<JSRef<Blob>>) {}
+    fn PassOptionalUnion(&self, _: Option<HTMLElementOrLong>) {}
+    fn PassOptionalAny(&self, _: *JSContext, _: Option<JSVal>) {}
+
+    fn PassOptionalNullableBoolean(&self, _: Option<Option<bool>>) {}
+    fn PassOptionalNullableByte(&self, _: Option<Option<i8>>) {}
+    fn PassOptionalNullableOctet(&self, _: Option<Option<u8>>) {}
+    fn PassOptionalNullableShort(&self, _: Option<Option<i16>>) {}
+    fn PassOptionalNullableUnsignedShort(&self, _: Option<Option<u16>>) {}
+    fn PassOptionalNullableLong(&self, _: Option<Option<i32>>) {}
+    fn PassOptionalNullableUnsignedLong(&self, _: Option<Option<u32>>) {}
+    fn PassOptionalNullableLongLong(&self, _: Option<Option<i64>>) {}
+    fn PassOptionalNullableUnsignedLongLong(&self, _: Option<Option<u64>>) {}
+    fn PassOptionalNullableFloat(&self, _: Option<Option<f32>>) {}
+    fn PassOptionalNullableDouble(&self, _: Option<Option<f64>>) {}
+    fn PassOptionalNullableString(&self, _: Option<Option<DOMString>>) {}
+    fn PassOptionalNullableByteString(&self, _: Option<Option<ByteString>>) {}
+    // fn PassOptionalNullableEnum(&self, _: Option<Option<TestEnum>>) {}
+    fn PassOptionalNullableInterface(&self, _: Option<Option<JSRef<Blob>>>) {}
+    fn PassOptionalNullableUnion(&self, _: Option<Option<HTMLElementOrLong>>) {}
+
+    fn PassOptionalBooleanWithDefault(&self, _: bool) {}
+    fn PassOptionalByteWithDefault(&self, _: i8) {}
+    fn PassOptionalOctetWithDefault(&self, _: u8) {}
+    fn PassOptionalShortWithDefault(&self, _: i16) {}
+    fn PassOptionalUnsignedShortWithDefault(&self, _: u16) {}
+    fn PassOptionalLongWithDefault(&self, _: i32) {}
+    fn PassOptionalUnsignedLongWithDefault(&self, _: u32) {}
+    fn PassOptionalLongLongWithDefault(&self, _: i64) {}
+    fn PassOptionalUnsignedLongLongWithDefault(&self, _: u64) {}
+    fn PassOptionalStringWithDefault(&self, _: DOMString) {}
+    fn PassOptionalEnumWithDefault(&self, _: TestEnum) {}
+
+    fn PassOptionalNullableBooleanWithDefault(&self, _: Option<bool>) {}
+    fn PassOptionalNullableByteWithDefault(&self, _: Option<i8>) {}
+    fn PassOptionalNullableOctetWithDefault(&self, _: Option<u8>) {}
+    fn PassOptionalNullableShortWithDefault(&self, _: Option<i16>) {}
+    fn PassOptionalNullableUnsignedShortWithDefault(&self, _: Option<u16>) {}
+    fn PassOptionalNullableLongWithDefault(&self, _: Option<i32>) {}
+    fn PassOptionalNullableUnsignedLongWithDefault(&self, _: Option<u32>) {}
+    fn PassOptionalNullableLongLongWithDefault(&self, _: Option<i64>) {}
+    fn PassOptionalNullableUnsignedLongLongWithDefault(&self, _: Option<u64>) {}
+    fn PassOptionalNullableFloatWithDefault(&self, _: Option<f32>) {}
+    fn PassOptionalNullableDoubleWithDefault(&self, _: Option<f64>) {}
+    fn PassOptionalNullableStringWithDefault(&self, _: Option<DOMString>) {}
+    fn PassOptionalNullableByteStringWithDefault(&self, _: Option<ByteString>) {}
+    // fn PassOptionalNullableEnumWithDefault(&self, _: Option<TestEnum>) {}
+    fn PassOptionalNullableInterfaceWithDefault(&self, _: Option<JSRef<Blob>>) {}
+    fn PassOptionalNullableUnionWithDefault(&self, _: Option<HTMLElementOrLong>) {}
+    fn PassOptionalAnyWithDefault(&self, _: *JSContext, _: JSVal) {}
+
+    fn PassOptionalNullableBooleanWithNonNullDefault(&self, _: Option<bool>) {}
+    fn PassOptionalNullableByteWithNonNullDefault(&self, _: Option<i8>) {}
+    fn PassOptionalNullableOctetWithNonNullDefault(&self, _: Option<u8>) {}
+    fn PassOptionalNullableShortWithNonNullDefault(&self, _: Option<i16>) {}
+    fn PassOptionalNullableUnsignedShortWithNonNullDefault(&self, _: Option<u16>) {}
+    fn PassOptionalNullableLongWithNonNullDefault(&self, _: Option<i32>) {}
+    fn PassOptionalNullableUnsignedLongWithNonNullDefault(&self, _: Option<u32>) {}
+    fn PassOptionalNullableLongLongWithNonNullDefault(&self, _: Option<i64>) {}
+    fn PassOptionalNullableUnsignedLongLongWithNonNullDefault(&self, _: Option<u64>) {}
+    // fn PassOptionalNullableFloatWithNonNullDefault(&self, _: Option<f32>) {}
+    // fn PassOptionalNullableDoubleWithNonNullDefault(&self, _: Option<f64>) {}
+    fn PassOptionalNullableStringWithNonNullDefault(&self, _: Option<DOMString>) {}
+    // fn PassOptionalNullableEnumWithNonNullDefault(&self, _: Option<TestEnum>) {}
 }
 
 impl Reflectable for TestBinding {