зеркало из https://github.com/mozilla/gecko-dev.git
88 строки
3.0 KiB
C++
88 строки
3.0 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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_WebIDLGlobalNameHash_h__
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#define mozilla_dom_WebIDLGlobalNameHash_h__
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#include "js/RootingAPI.h"
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#include "nsTArray.h"
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namespace mozilla {
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namespace dom {
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struct WebIDLNameTableEntry;
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namespace constructors {
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namespace id {
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enum ID : uint16_t;
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} // namespace id
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} // namespace constructors
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class WebIDLGlobalNameHash
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{
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public:
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static void Init();
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static void Shutdown();
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typedef JSObject*
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(*DefineGlobalName)(JSContext* cx, JS::Handle<JSObject*> global,
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JS::Handle<jsid> id, bool defineOnGlobal);
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// Check whether a constructor should be enabled for the given object.
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// Note that the object should NOT be an Xray, since Xrays will end up
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// defining constructors on the underlying object.
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// This is a typedef for the function type itself, not the function
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// pointer, so it's more obvious that pointers to a ConstructorEnabled
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// can be null.
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typedef bool
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(ConstructorEnabled)(JSContext* cx, JS::Handle<JSObject*> obj);
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static void Register(uint16_t aNameOffset, uint16_t aNameLength,
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DefineGlobalName aDefine, ConstructorEnabled* aEnabled,
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constructors::id::ID aConstructorId);
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static void Remove(const char* aName, uint32_t aLength);
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// Returns false if something failed. aFound is set to true if the name is in
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// the hash, whether it's enabled or not.
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static bool DefineIfEnabled(JSContext* aCx, JS::Handle<JSObject*> aObj,
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JS::Handle<jsid> aId,
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JS::MutableHandle<JS::PropertyDescriptor> aDesc,
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bool* aFound);
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static bool MayResolve(jsid aId);
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// The type of names we're asking for.
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enum NameType {
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// All WebIDL names enabled for aObj.
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AllNames,
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// Only the names that are enabled for aObj and have not been resolved for
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// aObj in the past (and therefore can't have been deleted).
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UnresolvedNamesOnly
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};
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// Returns false if an exception has been thrown on aCx.
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static bool GetNames(JSContext* aCx, JS::Handle<JSObject*> aObj,
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NameType aNameType,
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JS::AutoIdVector& aNames);
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private:
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friend struct WebIDLNameTableEntry;
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// The total number of names that we will add to the hash.
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// The value of sCount is generated by Codegen.py in RegisterBindings.cpp.
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static const uint32_t sCount;
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// The names that will be registered in the hash, concatenated as one big
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// string with \0 as a separator between names.
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// The value of sNames is generated by Codegen.py in RegisterBindings.cpp.
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static const char sNames[];
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};
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_dom_WebIDLGlobalNameHash_h__
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