Use Heap for dictionary and union members.

components/script/dom/bindings/codegen/CodegenRust.py

@@ -1031,21 +1031,22 @@ def getJSToNativeConversionInfo(type, descriptorProvider, failureCode=None,
 
     if type.isAny():
         assert not isEnforceRange and not isClamp
+        assert isMember != "Union"
 
         if isMember == "Dictionary":
             # TODO: Need to properly root dictionaries
             # https://github.com/servo/servo/issues/6381
-            declType = CGGeneric("JSVal")
+            declType = CGGeneric("Heap<JSVal>")
 
             if defaultValue is None:
                 default = None
             elif isinstance(defaultValue, IDLNullValue):
-                default = "NullValue()"
+                default = "Heap::new(NullValue())"
             elif isinstance(defaultValue, IDLUndefinedValue):
-                default = "UndefinedValue()"
+                default = "Heap::new(UndefinedValue())"
             else:
                 raise TypeError("Can't handle non-null, non-undefined default value here")
-            return handleOptional("${val}", declType, default)
+            return handleOptional("Heap::new(${val}.get())", declType, default)
 
         declType = CGGeneric("HandleValue")
 
@@ -1065,13 +1066,22 @@ def getJSToNativeConversionInfo(type, descriptorProvider, failureCode=None,
 
         # TODO: Need to root somehow
         # https://github.com/servo/servo/issues/6382
-        declType = CGGeneric("*mut JSObject")
+        default = "ptr::null_mut()"
         templateBody = wrapObjectTemplate("${val}.get().to_object()",
-                                          "ptr::null_mut()",
+                                          default,
                                           isDefinitelyObject, type, failureCode)
 
+        if isMember in ("Dictionary", "Union"):
+            declType = CGGeneric("Heap<*mut JSObject>")
+            templateBody = "Heap::new(%s)" % templateBody
+            default = "Heap::new(%s)" % default
+        else:
+            # TODO: Need to root somehow
+            # https://github.com/servo/servo/issues/6382
+            declType = CGGeneric("*mut JSObject")
+
         return handleOptional(templateBody, declType,
-                              handleDefaultNull("ptr::null_mut()"))
+                              handleDefaultNull(default))
 
     if type.isDictionary():
         # There are no nullable dictionaries
@@ -2230,6 +2240,7 @@ def UnionTypes(descriptors, dictionaries, callbacks, typedefs, config):
         'dom::types::*',
         'js::error::throw_type_error',
         'js::jsapi::HandleValue',
+        'js::jsapi::Heap',
         'js::jsapi::JSContext',
         'js::jsapi::JSObject',
         'js::jsapi::MutableHandleValue',
@@ -4049,7 +4060,7 @@ def getUnionTypeTemplateVars(type, descriptorProvider):
         typeName = builtinNames[type.tag()]
     elif type.isObject():
         name = type.name
-        typeName = "*mut JSObject"
+        typeName = "Heap<*mut JSObject>"
     else:
         raise TypeError("Can't handle %s in unions yet" % type)
 
@@ -5993,8 +6004,6 @@ class CGDictionary(CGThing):
         default = info.default
         replacements = {"val": "rval.handle()"}
         conversion = string.Template(templateBody).substitute(replacements)
-        if memberType.isAny():
-            conversion = "%s.get()" % conversion
 
         assert (member.defaultValue is None) == (default is None)
         if not member.optional:

components/script/dom/bindings/iterable.rs

@@ -15,7 +15,7 @@ use dom::bindings::reflector::{DomObject, Reflector, reflect_dom_object};
 use dom::bindings::trace::JSTraceable;
 use dom::globalscope::GlobalScope;
 use js::conversions::ToJSValConvertible;
-use js::jsapi::{HandleValue, JSContext, JSObject, MutableHandleObject};
+use js::jsapi::{HandleValue, Heap, JSContext, JSObject, MutableHandleObject};
 use js::jsval::UndefinedValue;
 use std::cell::Cell;
 use std::ptr;
@@ -116,7 +116,7 @@ fn dict_return(cx: *mut JSContext,
                value: HandleValue) -> Fallible<()> {
     let mut dict = unsafe { IterableKeyOrValueResult::empty(cx) };
     dict.done = done;
-    dict.value = value.get();
+    dict.value.set(value.get());
     rooted!(in(cx) let mut dict_value = UndefinedValue());
     unsafe {
         dict.to_jsval(cx, dict_value.handle_mut());
@@ -131,7 +131,7 @@ fn key_and_value_return(cx: *mut JSContext,
                         value: HandleValue) -> Fallible<()> {
     let mut dict = unsafe { IterableKeyAndValueResult::empty(cx) };
     dict.done = false;
-    dict.value = Some(vec![key.get(), value.get()]);
+    dict.value = Some(vec![Heap::new(key.get()), Heap::new(value.get())]);
     rooted!(in(cx) let mut dict_value = UndefinedValue());
     unsafe {
         dict.to_jsval(cx, dict_value.handle_mut());

components/script/dom/customevent.rs

@@ -57,7 +57,7 @@ impl CustomEvent {
                             Atom::from(type_),
                             init.parent.bubbles,
                             init.parent.cancelable,
-                            unsafe { HandleValue::from_marked_location(&init.detail) }))
+                            init.detail.handle()))
     }
 
     fn init_custom_event(&self,

components/script/dom/errorevent.rs

@@ -93,7 +93,7 @@ impl ErrorEvent {
 
         // Dictionaries need to be rooted
         // https://github.com/servo/servo/issues/6381
-        rooted!(in(global.get_cx()) let error = init.error);
+        rooted!(in(global.get_cx()) let error = init.error.get());
         let event = ErrorEvent::new(
                 global,
                 Atom::from(type_),

components/script/dom/extendablemessageevent.rs

@@ -50,7 +50,7 @@ impl ExtendableMessageEvent {
                        init: &ExtendableMessageEventBinding::ExtendableMessageEventInit)
                        -> Fallible<Root<ExtendableMessageEvent>> {
         let global = worker.upcast::<GlobalScope>();
-        rooted!(in(global.get_cx()) let data = init.data);
+        rooted!(in(global.get_cx()) let data = init.data.get());
         let ev = ExtendableMessageEvent::new(global,
                                              Atom::from(type_),
                                              init.parent.parent.bubbles,

components/script/dom/filereader.rs

@@ -344,7 +344,7 @@ impl FileReaderMethods for FileReader {
             FileReaderResult::String(ref string) =>
                 StringOrObject::String(string.clone()),
             FileReaderResult::ArrayBuffer(ref arr_buffer) => {
-                StringOrObject::Object((*arr_buffer.ptr.get()).to_object())
+                StringOrObject::Object(Heap::new((*arr_buffer.ptr.get()).to_object()))
             }
         })
     }

components/script/dom/messageevent.rs

@@ -64,7 +64,7 @@ impl MessageEvent {
                        -> Fallible<Root<MessageEvent>> {
         // Dictionaries need to be rooted
         // https://github.com/servo/servo/issues/6381
-        rooted!(in(global.get_cx()) let data = init.data);
+        rooted!(in(global.get_cx()) let data = init.data.get());
         let ev = MessageEvent::new(global,
                                    Atom::from(type_),
                                    init.parent.bubbles,

components/script/dom/popstateevent.rs

@@ -53,7 +53,6 @@ impl PopStateEvent {
         ev
     }
 
-    #[allow(unsafe_code)]
     pub fn Constructor(window: &Window,
                        type_: DOMString,
                        init: &PopStateEventBinding::PopStateEventInit)
@@ -62,7 +61,7 @@ impl PopStateEvent {
                               Atom::from(type_),
                               init.parent.bubbles,
                               init.parent.cancelable,
-                              unsafe { HandleValue::from_marked_location(&init.state) }))
+                              init.state.handle()))
     }
 }
 

components/script/dom/request.rs

@@ -139,12 +139,12 @@ impl Request {
         // TODO: `environment settings object` is not implemented in Servo yet.
 
         // Step 10
-        if !init.window.is_undefined() && !init.window.is_null() {
+        if !init.window.handle().is_null_or_undefined() {
             return Err(Error::Type("Window is present and is not null".to_string()))
         }
 
         // Step 11
-        if !init.window.is_undefined() {
+        if !init.window.handle().is_undefined() {
             window = Window::NoWindow;
         }
 
@@ -179,7 +179,7 @@ impl Request {
             init.redirect.is_some() ||
             init.referrer.is_some() ||
             init.referrerPolicy.is_some() ||
-            !init.window.is_undefined() {
+            !init.window.handle().is_undefined() {
                 // Step 13.1
                 if request.mode == NetTraitsRequestMode::Navigate {
                     return Err(Error::Type(

components/script/dom/testbinding.rs

@@ -33,7 +33,7 @@ use dom::globalscope::GlobalScope;
 use dom::promise::Promise;
 use dom::promisenativehandler::{PromiseNativeHandler, Callback};
 use dom::url::URL;
-use js::jsapi::{HandleObject, HandleValue, JSContext, JSObject, JSAutoCompartment};
+use js::jsapi::{HandleObject, HandleValue, Heap, JSContext, JSObject, JSAutoCompartment};
 use js::jsapi::{JS_NewPlainObject, JS_NewUint8ClampedArray};
 use js::jsval::{JSVal, NullValue};
 use script_traits::MsDuration;
@@ -338,12 +338,12 @@ impl TestBindingMethods for TestBinding {
     fn ReceiveNullableSequence(&self) -> Option<Vec<i32>> { Some(vec![1]) }
     fn ReceiveTestDictionaryWithSuccessOnKeyword(&self) -> TestDictionary {
         TestDictionary {
-            anyValue: NullValue(),
+            anyValue: Heap::new(NullValue()),
             booleanValue: None,
             byteValue: None,
             dict: TestDictionaryDefaults {
                 UnrestrictedDoubleValue: 0.0,
-                anyValue: NullValue(),
+                anyValue: Heap::new(NullValue()),
                 booleanValue: false,
                 bytestringValue: ByteString::new(vec![]),
                 byteValue: 0,
@@ -359,7 +359,7 @@ impl TestBindingMethods for TestBinding {
                 nullableFloatValue: None,
                 nullableLongLongValue: None,
                 nullableLongValue: None,
-                nullableObjectValue: ptr::null_mut(),
+                nullableObjectValue: Heap::new(ptr::null_mut()),
                 nullableOctetValue: None,
                 nullableShortValue: None,
                 nullableStringValue: None,