forked from mirrors/gecko-dev
bb5d1b73f6
This patch does not impact behavior; it's just formatting changes.
This patch was automatically generated by the following command:
./mach clang-format -p layout
Differential Revision: https://phabricator.services.mozilla.com/D145163
70 lines
1.8 KiB
C++
70 lines
1.8 KiB
C++
/* 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_ScrollGeneration_h_
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#define mozilla_ScrollGeneration_h_
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#include <cstdint>
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#include <iosfwd>
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namespace mozilla {
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struct ScrollGenerationCounter;
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class APZTag {};
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class MainThreadTag {};
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template <typename Tag>
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struct ScrollGeneration;
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template <typename Tag>
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std::ostream& operator<<(std::ostream& aStream,
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const ScrollGeneration<Tag>& aGen);
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template <typename Tag>
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struct ScrollGeneration {
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friend struct ScrollGenerationCounter;
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private:
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// Private constructor; use ScrollGenerationCounter to get a new instance.
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explicit ScrollGeneration(uint64_t aValue);
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public:
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// Dummy constructor, needed for IPDL purposes. Not intended for manual use.
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ScrollGeneration();
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uint64_t Raw() const { return mValue; }
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bool operator<(const ScrollGeneration<Tag>& aOther) const;
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bool operator==(const ScrollGeneration<Tag>& aOther) const;
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bool operator!=(const ScrollGeneration<Tag>& aOther) const;
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friend std::ostream& operator<< <>(std::ostream& aStream,
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const ScrollGeneration<Tag>& aGen);
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private:
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uint64_t mValue;
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};
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using APZScrollGeneration = ScrollGeneration<APZTag>;
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using MainThreadScrollGeneration = ScrollGeneration<MainThreadTag>;
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struct ScrollGenerationCounter {
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MainThreadScrollGeneration NewMainThreadGeneration() {
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uint64_t value = ++mCounter;
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return MainThreadScrollGeneration(value);
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}
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APZScrollGeneration NewAPZGeneration() {
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uint64_t value = ++mCounter;
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return APZScrollGeneration(value);
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}
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private:
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uint64_t mCounter = 0;
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};
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} // namespace mozilla
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#endif // mozilla_ScrollGeneration_h_
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