зеркало из https://github.com/mozilla/gecko-dev.git
121 строка
3.3 KiB
C++
121 строка
3.3 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
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_indexeddb_keypath_h__
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#define mozilla_dom_indexeddb_keypath_h__
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#include <new>
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#include <utility>
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#include "js/TypeDecls.h"
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#include "mozilla/Result.h"
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#include "mozilla/ipc/IPCForwards.h"
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#include "nsISupports.h"
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#include "nsError.h"
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#include "nsString.h"
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#include "nsTArray.h"
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namespace JS {
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template <class T>
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class Heap;
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}
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namespace mozilla::dom {
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class OwningStringOrStringSequence;
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template <typename T>
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class Sequence;
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template <typename T>
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struct Nullable;
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namespace indexedDB {
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class IndexMetadata;
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class Key;
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class ObjectStoreMetadata;
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class KeyPath {
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// This private constructor is only to be used by IPDL-generated classes.
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friend class IndexMetadata;
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friend class ObjectStoreMetadata;
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ALLOW_DEPRECATED_READPARAM
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KeyPath() : mType(KeyPathType::NonExistent) { MOZ_COUNT_CTOR(KeyPath); }
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public:
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enum class KeyPathType { NonExistent, String, Array, EndGuard };
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void SetType(KeyPathType aType);
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bool AppendStringWithValidation(const nsAString& aString);
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explicit KeyPath(int aDummy) : mType(KeyPathType::NonExistent) {
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MOZ_COUNT_CTOR(KeyPath);
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}
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KeyPath(KeyPath&& aOther) {
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MOZ_COUNT_CTOR(KeyPath);
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*this = std::move(aOther);
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}
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KeyPath& operator=(KeyPath&&) = default;
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KeyPath(const KeyPath& aOther) {
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MOZ_COUNT_CTOR(KeyPath);
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*this = aOther;
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}
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KeyPath& operator=(const KeyPath&) = default;
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MOZ_COUNTED_DTOR(KeyPath)
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static Result<KeyPath, nsresult> Parse(const nsAString& aString);
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static Result<KeyPath, nsresult> Parse(const Sequence<nsString>& aStrings);
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static Result<KeyPath, nsresult> Parse(
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const Nullable<OwningStringOrStringSequence>& aValue);
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nsresult ExtractKey(JSContext* aCx, const JS::Value& aValue, Key& aKey) const;
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nsresult ExtractKeyAsJSVal(JSContext* aCx, const JS::Value& aValue,
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JS::Value* aOutVal) const;
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using ExtractOrCreateKeyCallback = nsresult (*)(JSContext*, void*);
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nsresult ExtractOrCreateKey(JSContext* aCx, const JS::Value& aValue,
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Key& aKey, ExtractOrCreateKeyCallback aCallback,
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void* aClosure) const;
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inline bool IsValid() const { return mType != KeyPathType::NonExistent; }
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inline bool IsArray() const { return mType == KeyPathType::Array; }
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inline bool IsString() const { return mType == KeyPathType::String; }
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inline bool IsEmpty() const {
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return mType == KeyPathType::String && mStrings[0].IsEmpty();
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}
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bool operator==(const KeyPath& aOther) const {
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return mType == aOther.mType && mStrings == aOther.mStrings;
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}
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nsAutoString SerializeToString() const;
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static KeyPath DeserializeFromString(const nsAString& aString);
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nsresult ToJSVal(JSContext* aCx, JS::MutableHandle<JS::Value> aValue) const;
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nsresult ToJSVal(JSContext* aCx, JS::Heap<JS::Value>& aValue) const;
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bool IsAllowedForObjectStore(bool aAutoIncrement) const;
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KeyPathType mType;
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CopyableTArray<nsString> mStrings;
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};
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} // namespace indexedDB
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} // namespace mozilla::dom
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#endif // mozilla_dom_indexeddb_keypath_h__
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