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224115946f
In the new setup, all per-interface DOM binding files are exported into mozilla/dom. General files not specific to an interface are also exported into mozilla/dom. In terms of namespaces, most things now live in mozilla::dom. Each interface Foo that has generated code has a mozilla::dom::FooBinding namespace for said generated code (and possibly a mozilla::bindings::FooBinding_workers if there's separate codegen for workers). IDL enums are a bit weird: since the name of the enum and the names of its entries all end up in the same namespace, we still generate a C++ namespace with the name of the IDL enum type with "Values" appended to it, with a ::valuelist inside for the actual C++ enum. We then typedef EnumFooValues::valuelist to EnumFoo. That makes it a bit more difficult to refer to the values, but means that values from different enums don't collide with each other. The enums with the proto and constructor IDs in them now live under the mozilla::dom::prototypes and mozilla::dom::constructors namespaces respectively. Again, this lets us deal sanely with the whole "enum value names are flattened into the namespace the enum is in" deal. The main benefit of this setup (and the reason "Binding" got appended to the per-interface namespaces) is that this way "using mozilla::dom" should Just Work for consumers and still allow C++ code to sanely use the IDL interface names for concrete classes, which is fairly desirable. --HG-- rename : dom/bindings/Utils.cpp => dom/bindings/BindingUtils.cpp rename : dom/bindings/Utils.h => dom/bindings/BindingUtils.h
103 lines
3.3 KiB
C++
103 lines
3.3 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-*/
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_DOMJSClass_h
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#define mozilla_dom_DOMJSClass_h
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#include "jsapi.h"
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#include "jsfriendapi.h"
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#include "mozilla/dom/PrototypeList.h" // auto-generated
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// For non-global objects we use slot 0 for holding the raw object.
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#define DOM_OBJECT_SLOT 0
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// All DOM globals must have two slots at DOM_GLOBAL_OBJECT_SLOT and
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// DOM_PROTOTYPE_SLOT. We have to start at 1 past JSCLASS_GLOBAL_SLOT_COUNT
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// because XPConnect uses that one.
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#define DOM_GLOBAL_OBJECT_SLOT (JSCLASS_GLOBAL_SLOT_COUNT + 1)
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#define DOM_PROTOTYPE_SLOT (JSCLASS_GLOBAL_SLOT_COUNT + 2)
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// We use these flag bits for the new bindings.
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#define JSCLASS_IS_DOMJSCLASS JSCLASS_USERBIT1
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#define JSCLASS_DOM_GLOBAL JSCLASS_USERBIT2
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namespace mozilla {
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namespace dom {
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typedef bool
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(* ResolveProperty)(JSContext* cx, JSObject* wrapper, jsid id, bool set,
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JSPropertyDescriptor* desc);
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typedef bool
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(* EnumerateProperties)(JS::AutoIdVector& props);
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struct NativePropertyHooks
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{
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ResolveProperty mResolveProperty;
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EnumerateProperties mEnumerateProperties;
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const NativePropertyHooks *mProtoHooks;
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};
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// Special JSClass for reflected DOM objects.
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struct DOMJSClass
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{
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// It would be nice to just inherit from JSClass, but that precludes pure
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// compile-time initialization of the form |DOMJSClass = {...};|, since C++
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// only allows brace initialization for aggregate/POD types.
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JSClass mBase;
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// A list of interfaces that this object implements, in order of decreasing
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// derivedness.
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const prototypes::ID mInterfaceChain[prototypes::id::_ID_Count];
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// We cache the VTable index of GetWrapperCache for objects that support it.
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//
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// -1 indicates that GetWrapperCache is not implemented on the underlying object.
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// XXXkhuey this is unused and needs to die.
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const int16_t mGetWrapperCacheVTableOffset;
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// We store the DOM object in a reserved slot whose index is mNativeSlot.
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// Sometimes it's an nsISupports and sometimes it's not; this class tells
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// us which it is.
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const bool mDOMObjectIsISupports;
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// The slot to use to get the object reference from the object
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const size_t mNativeSlot;
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const NativePropertyHooks* mNativeHooks;
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static DOMJSClass* FromJSClass(JSClass* base) {
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MOZ_ASSERT(base->flags & JSCLASS_IS_DOMJSCLASS);
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return reinterpret_cast<DOMJSClass*>(base);
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}
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static const DOMJSClass* FromJSClass(const JSClass* base) {
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MOZ_ASSERT(base->flags & JSCLASS_IS_DOMJSCLASS);
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return reinterpret_cast<const DOMJSClass*>(base);
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}
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static DOMJSClass* FromJSClass(js::Class* base) {
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return FromJSClass(Jsvalify(base));
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}
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static const DOMJSClass* FromJSClass(const js::Class* base) {
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return FromJSClass(Jsvalify(base));
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}
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JSClass* ToJSClass() { return &mBase; }
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};
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inline JSObject**
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GetProtoOrIfaceArray(JSObject* global)
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{
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MOZ_ASSERT(js::GetObjectClass(global)->flags & JSCLASS_DOM_GLOBAL);
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return static_cast<JSObject**>(
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js::GetReservedSlot(global, DOM_PROTOTYPE_SLOT).toPrivate());
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}
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} // namespace dom
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} // namespace mozilla
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#endif /* mozilla_dom_DOMJSClass_h */
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