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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:22:09 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:22:09 +0000
commit43a97878ce14b72f0981164f87f2e35e14151312 (patch)
tree620249daf56c0258faa40cbdcf9cfba06de2a846 /dom/quota/UsageInfo.h
parentInitial commit. (diff)
downloadfirefox-43a97878ce14b72f0981164f87f2e35e14151312.tar.xz
firefox-43a97878ce14b72f0981164f87f2e35e14151312.zip
Adding upstream version 110.0.1.upstream/110.0.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'dom/quota/UsageInfo.h')
-rw-r--r--dom/quota/UsageInfo.h103
1 files changed, 103 insertions, 0 deletions
diff --git a/dom/quota/UsageInfo.h b/dom/quota/UsageInfo.h
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+++ b/dom/quota/UsageInfo.h
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+/* -*- 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_quota_usageinfo_h__
+#define mozilla_dom_quota_usageinfo_h__
+
+#include <cstdint>
+#include <utility>
+#include "mozilla/CheckedInt.h"
+#include "mozilla/Maybe.h"
+
+namespace mozilla::dom::quota {
+
+enum struct UsageKind { Database, File };
+
+namespace detail {
+inline void AddCapped(Maybe<uint64_t>& aValue, const Maybe<uint64_t> aDelta) {
+ if (aDelta.isSome()) {
+ CheckedUint64 value = aValue.valueOr(0);
+
+ value += aDelta.value();
+
+ aValue = Some(value.isValid() ? value.value() : UINT64_MAX);
+ }
+}
+
+template <UsageKind Kind>
+struct Usage {
+ explicit Usage(Maybe<uint64_t> aValue = Nothing{}) : mValue(aValue) {}
+
+ Maybe<uint64_t> GetValue() const { return mValue; }
+
+ Usage& operator+=(const Usage aDelta) {
+ AddCapped(mValue, aDelta.mValue);
+
+ return *this;
+ }
+
+ Usage operator+(const Usage aDelta) const {
+ Usage res = *this;
+ res += aDelta;
+ return res;
+ }
+
+ private:
+ Maybe<uint64_t> mValue;
+};
+} // namespace detail
+
+using DatabaseUsageType = detail::Usage<UsageKind::Database>;
+using FileUsageType = detail::Usage<UsageKind::File>;
+
+class UsageInfo final {
+ public:
+ UsageInfo() = default;
+
+ explicit UsageInfo(const DatabaseUsageType aUsage) : mDatabaseUsage(aUsage) {}
+
+ explicit UsageInfo(const FileUsageType aUsage) : mFileUsage(aUsage) {}
+
+ UsageInfo operator+(const UsageInfo& aUsageInfo) {
+ UsageInfo res = *this;
+ res += aUsageInfo;
+ return res;
+ }
+
+ UsageInfo& operator+=(const UsageInfo& aUsageInfo) {
+ mDatabaseUsage += aUsageInfo.mDatabaseUsage;
+ mFileUsage += aUsageInfo.mFileUsage;
+ return *this;
+ }
+
+ UsageInfo& operator+=(const DatabaseUsageType aUsage) {
+ mDatabaseUsage += aUsage;
+ return *this;
+ }
+
+ UsageInfo& operator+=(const FileUsageType aUsage) {
+ mFileUsage += aUsage;
+ return *this;
+ }
+
+ Maybe<uint64_t> DatabaseUsage() const { return mDatabaseUsage.GetValue(); }
+
+ Maybe<uint64_t> FileUsage() const { return mFileUsage.GetValue(); }
+
+ Maybe<uint64_t> TotalUsage() const {
+ Maybe<uint64_t> res = mDatabaseUsage.GetValue();
+ detail::AddCapped(res, FileUsage());
+ return res;
+ }
+
+ private:
+ DatabaseUsageType mDatabaseUsage;
+ FileUsageType mFileUsage;
+};
+
+} // namespace mozilla::dom::quota
+
+#endif // mozilla_dom_quota_usageinfo_h__