cc27d85110
Summary: Pull Request resolved: https://github.com/facebook/react-native/pull/25430 Pull Request resolved: https://github.com/facebook/litho/pull/561 Pull Request resolved: https://github.com/facebook/yoga/pull/910 * According to C++ standard values which produce undefined behavior cannot be declared as `constexpr`. * Expressions which evaluate to `nan, infinity, etc` are undefined behavior. For more details you can checkout this Stackoverflow answer: https://stackoverflow.com/a/46373136 Reviewed By: davidaurelio Differential Revision: D16055108 fbshipit-source-id: ee85ba63a714b18bfb8aa8c0770652e184454f74
46 lines
1.4 KiB
C++
46 lines
1.4 KiB
C++
/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the LICENSE
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* file in the root directory of this source tree.
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*/
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#pragma once
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#include "YGFloatOptional.h"
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#include "Yoga-internal.h"
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struct YGLayout {
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std::array<float, 4> position = {};
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std::array<float, 2> dimensions = {{YGUndefined, YGUndefined}};
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std::array<float, 4> margin = {};
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std::array<float, 4> border = {};
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std::array<float, 4> padding = {};
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YGDirection direction : 2;
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bool didUseLegacyFlag : 1;
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bool doesLegacyStretchFlagAffectsLayout : 1;
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bool hadOverflow : 1;
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uint32_t computedFlexBasisGeneration = 0;
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YGFloatOptional computedFlexBasis = {};
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// Instead of recomputing the entire layout every single time, we cache some
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// information to break early when nothing changed
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uint32_t generationCount = 0;
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YGDirection lastOwnerDirection = (YGDirection) -1;
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uint32_t nextCachedMeasurementsIndex = 0;
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std::array<YGCachedMeasurement, YG_MAX_CACHED_RESULT_COUNT>
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cachedMeasurements = {};
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std::array<float, 2> measuredDimensions = {{YGUndefined, YGUndefined}};
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YGCachedMeasurement cachedLayout = YGCachedMeasurement();
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YGLayout()
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: direction(YGDirectionInherit),
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didUseLegacyFlag(false),
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doesLegacyStretchFlagAffectsLayout(false),
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hadOverflow(false) {}
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bool operator==(YGLayout layout) const;
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bool operator!=(YGLayout layout) const { return !(*this == layout); }
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};
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