From 5f8de423f190bbb79a62f804151bc24824fa32d8 Mon Sep 17 00:00:00 2001
From: "Matt A. Tobin" <mattatobin@localhost.localdomain>
Date: Fri, 2 Feb 2018 04:16:08 -0500
Subject: Add m-esr52 at 52.6.0

---
 dom/indexedDB/IDBCursor.h | 224 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 224 insertions(+)
 create mode 100644 dom/indexedDB/IDBCursor.h

(limited to 'dom/indexedDB/IDBCursor.h')

diff --git a/dom/indexedDB/IDBCursor.h b/dom/indexedDB/IDBCursor.h
new file mode 100644
index 000000000..25be16bee
--- /dev/null
+++ b/dom/indexedDB/IDBCursor.h
@@ -0,0 +1,224 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * 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/. */
+
+#ifndef mozilla_dom_idbcursor_h__
+#define mozilla_dom_idbcursor_h__
+
+#include "IndexedDatabase.h"
+#include "js/RootingAPI.h"
+#include "mozilla/Attributes.h"
+#include "mozilla/dom/IDBCursorBinding.h"
+#include "mozilla/dom/indexedDB/Key.h"
+#include "nsCycleCollectionParticipant.h"
+#include "nsWrapperCache.h"
+
+class nsPIDOMWindowInner;
+
+namespace mozilla {
+
+class ErrorResult;
+
+namespace dom {
+
+class IDBIndex;
+class IDBObjectStore;
+class IDBRequest;
+class IDBTransaction;
+class OwningIDBObjectStoreOrIDBIndex;
+
+namespace indexedDB {
+class BackgroundCursorChild;
+}
+
+class IDBCursor final
+  : public nsISupports
+  , public nsWrapperCache
+{
+public:
+  typedef indexedDB::Key Key;
+  typedef indexedDB::StructuredCloneReadInfo StructuredCloneReadInfo;
+
+  enum Direction
+  {
+    NEXT = 0,
+    NEXT_UNIQUE,
+    PREV,
+    PREV_UNIQUE,
+
+    // Only needed for IPC serialization helper, should never be used in code.
+    DIRECTION_INVALID
+  };
+
+private:
+  enum Type
+  {
+    Type_ObjectStore,
+    Type_ObjectStoreKey,
+    Type_Index,
+    Type_IndexKey,
+  };
+
+  indexedDB::BackgroundCursorChild* mBackgroundActor;
+
+  RefPtr<IDBRequest> mRequest;
+  RefPtr<IDBObjectStore> mSourceObjectStore;
+  RefPtr<IDBIndex> mSourceIndex;
+
+  // mSourceObjectStore or mSourceIndex will hold this alive.
+  IDBTransaction* mTransaction;
+
+  JS::Heap<JSObject*> mScriptOwner;
+
+  // These are cycle-collected!
+  JS::Heap<JS::Value> mCachedKey;
+  JS::Heap<JS::Value> mCachedPrimaryKey;
+  JS::Heap<JS::Value> mCachedValue;
+
+  Key mKey;
+  Key mSortKey;
+  Key mPrimaryKey;
+  StructuredCloneReadInfo mCloneInfo;
+
+  const Type mType;
+  const Direction mDirection;
+
+  bool mHaveCachedKey : 1;
+  bool mHaveCachedPrimaryKey : 1;
+  bool mHaveCachedValue : 1;
+  bool mRooted : 1;
+  bool mContinueCalled : 1;
+  bool mHaveValue : 1;
+
+public:
+  static already_AddRefed<IDBCursor>
+  Create(indexedDB::BackgroundCursorChild* aBackgroundActor,
+         const Key& aKey,
+         StructuredCloneReadInfo&& aCloneInfo);
+
+  static already_AddRefed<IDBCursor>
+  Create(indexedDB::BackgroundCursorChild* aBackgroundActor,
+         const Key& aKey);
+
+  static already_AddRefed<IDBCursor>
+  Create(indexedDB::BackgroundCursorChild* aBackgroundActor,
+         const Key& aKey,
+         const Key& aSortKey,
+         const Key& aPrimaryKey,
+         StructuredCloneReadInfo&& aCloneInfo);
+
+  static already_AddRefed<IDBCursor>
+  Create(indexedDB::BackgroundCursorChild* aBackgroundActor,
+         const Key& aKey,
+         const Key& aSortKey,
+         const Key& aPrimaryKey);
+
+  static Direction
+  ConvertDirection(IDBCursorDirection aDirection);
+
+  void
+  AssertIsOnOwningThread() const
+#ifdef DEBUG
+  ;
+#else
+  { }
+#endif
+
+  nsPIDOMWindowInner*
+  GetParentObject() const;
+
+  void
+  GetSource(OwningIDBObjectStoreOrIDBIndex& aSource) const;
+
+  IDBCursorDirection
+  GetDirection() const;
+
+  void
+  GetKey(JSContext* aCx,
+         JS::MutableHandle<JS::Value> aResult,
+         ErrorResult& aRv);
+
+  void
+  GetPrimaryKey(JSContext* aCx,
+                JS::MutableHandle<JS::Value> aResult,
+                ErrorResult& aRv);
+
+  void
+  GetValue(JSContext* aCx,
+           JS::MutableHandle<JS::Value> aResult,
+           ErrorResult& aRv);
+
+  void
+  Continue(JSContext* aCx, JS::Handle<JS::Value> aKey, ErrorResult& aRv);
+
+  void
+  ContinuePrimaryKey(JSContext* aCx,
+                     JS::Handle<JS::Value> aKey,
+                     JS::Handle<JS::Value> aPrimaryKey,
+                     ErrorResult& aRv);
+
+  void
+  Advance(uint32_t aCount, ErrorResult& aRv);
+
+  already_AddRefed<IDBRequest>
+  Update(JSContext* aCx, JS::Handle<JS::Value> aValue, ErrorResult& aRv);
+
+  already_AddRefed<IDBRequest>
+  Delete(JSContext* aCx, ErrorResult& aRv);
+
+  void
+  Reset();
+
+  void
+  Reset(Key&& aKey, StructuredCloneReadInfo&& aValue);
+
+  void
+  Reset(Key&& aKey);
+
+  void
+  Reset(Key&& aKey, Key&& aSortKey, Key&& aPrimaryKey, StructuredCloneReadInfo&& aValue);
+
+  void
+  Reset(Key&& aKey, Key&& aSortKey, Key&& aPrimaryKey);
+
+  void
+  ClearBackgroundActor()
+  {
+    AssertIsOnOwningThread();
+
+    mBackgroundActor = nullptr;
+  }
+
+  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(IDBCursor)
+
+  // nsWrapperCache
+  virtual JSObject*
+  WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
+
+private:
+  IDBCursor(Type aType,
+            indexedDB::BackgroundCursorChild* aBackgroundActor,
+            const Key& aKey);
+
+  ~IDBCursor();
+
+#ifdef ENABLE_INTL_API
+  // Checks if this is a locale aware cursor (ie. the index's sortKey is unset)
+  bool
+  IsLocaleAware() const;
+#endif
+
+  void
+  DropJSObjects();
+
+  bool
+  IsSourceDeleted() const;
+};
+
+} // namespace dom
+} // namespace mozilla
+
+#endif // mozilla_dom_idbcursor_h__
-- 
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