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Update hash functions to use folly:#️⃣:hash_combine 

Summary: Following hashing best practices.

Reviewed By: shergin

Differential Revision: D13827893

fbshipit-source-id: 3786f1e42b176a973890989be7b33efce4825ac6
This commit is contained in:
Joshua Gross 2019-01-28 14:07:46 -08:00 committed by Facebook Github Bot
parent 6418e30e90
commit 88bc80c518
6 changed files with 83 additions and 85 deletions
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10
ReactCommon/fabric/attributedstring/AttributedString.h
View File

@ -91,10 +91,12 @@ struct hash<facebook::react::AttributedString::Fragment> {
size_t operator()(
const facebook::react::AttributedString::Fragment &fragment) const {
auto seed = size_t{0};
folly::hash::hash_combine(seed, fragment.string);
folly::hash::hash_combine(seed, fragment.textAttributes);
folly::hash::hash_combine(seed, fragment.shadowView);
folly::hash::hash_combine(seed, fragment.parentShadowView);
folly::hash::hash_combine(
seed,
fragment.string,
fragment.textAttributes,
fragment.shadowView,
fragment.parentShadowView);
return seed;
}
};

16
ReactCommon/fabric/attributedstring/ParagraphAttributes.h
View File

@ -73,15 +73,15 @@ template <>
struct hash<facebook::react::ParagraphAttributes> {
size_t operator()(
const facebook::react::ParagraphAttributes &attributes) const {
size_t seed = 0;
folly::hash::hash_combine(seed, attributes.maximumNumberOfLines);
folly::hash::hash_combine(seed, attributes.ellipsizeMode);
folly::hash::hash_combine(seed, attributes.adjustsFontSizeToFit);
auto seed = size_t{0};
folly::hash::hash_combine(
seed, std::hash<float>{}(attributes.minimumFontSize));
folly::hash::hash_combine(
seed, std::hash<float>{}(attributes.maximumFontSize));
return hash<int>()(seed);
seed,
attributes.maximumNumberOfLines,
attributes.ellipsizeMode,
attributes.adjustsFontSizeToFit,
attributes.minimumFontSize,
attributes.maximumFontSize);
return seed;
}
};
} // namespace std

72
ReactCommon/fabric/attributedstring/TextAttributes.h
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@ -10,6 +10,7 @@
#include <functional>
#include <limits>
#include <folly/Hash.h>
#include <folly/Optional.h>
#include <react/attributedstring/primitives.h>
#include <react/core/LayoutPrimitives.h>
@ -92,55 +93,38 @@ class TextAttributes : public DebugStringConvertible {
} // namespace facebook
namespace std {
template <>
struct hash<facebook::react::TextAttributes> {
size_t operator()(
const facebook::react::TextAttributes &textAttributes) const {
return std::hash<decltype(textAttributes.foregroundColor)>{}(
textAttributes.foregroundColor) +
std::hash<decltype(textAttributes.backgroundColor)>{}(
textAttributes.backgroundColor) +
std::hash<decltype(textAttributes.opacity)>{}(textAttributes.opacity) +
std::hash<decltype(textAttributes.fontFamily)>{}(
textAttributes.fontFamily) +
std::hash<decltype(textAttributes.fontSize)>{}(
textAttributes.fontSize) +
std::hash<decltype(textAttributes.fontSizeMultiplier)>{}(
textAttributes.fontSizeMultiplier) +
std::hash<decltype(textAttributes.fontWeight)>{}(
textAttributes.fontWeight) +
std::hash<decltype(textAttributes.fontStyle)>{}(
textAttributes.fontStyle) +
std::hash<decltype(textAttributes.fontVariant)>{}(
textAttributes.fontVariant) +
std::hash<decltype(textAttributes.allowFontScaling)>{}(
textAttributes.allowFontScaling) +
std::hash<decltype(textAttributes.letterSpacing)>{}(
textAttributes.letterSpacing) +
std::hash<decltype(textAttributes.lineHeight)>{}(
textAttributes.lineHeight) +
std::hash<decltype(textAttributes.alignment)>{}(
textAttributes.alignment) +
std::hash<decltype(textAttributes.baseWritingDirection)>{}(
textAttributes.baseWritingDirection) +
std::hash<decltype(textAttributes.textDecorationColor)>{}(
textAttributes.textDecorationColor) +
std::hash<decltype(textAttributes.textDecorationLineType)>{}(
textAttributes.textDecorationLineType) +
std::hash<decltype(textAttributes.textDecorationLineStyle)>{}(
textAttributes.textDecorationLineStyle) +
std::hash<decltype(textAttributes.textDecorationLinePattern)>{}(
textAttributes.textDecorationLinePattern) +
std::hash<decltype(textAttributes.textShadowOffset)>{}(
textAttributes.textShadowOffset) +
std::hash<decltype(textAttributes.textShadowRadius)>{}(
textAttributes.textShadowRadius) +
std::hash<decltype(textAttributes.textShadowColor)>{}(
textAttributes.textShadowColor) +
std::hash<decltype(textAttributes.isHighlighted)>{}(
textAttributes.isHighlighted) +
std::hash<decltype(textAttributes.layoutDirection)>{}(
auto seed = size_t{0};
folly::hash::hash_combine(
seed,
textAttributes.foregroundColor,
textAttributes.backgroundColor,
textAttributes.opacity,
textAttributes.fontFamily,
textAttributes.fontSize,
textAttributes.fontSizeMultiplier,
textAttributes.fontWeight,
textAttributes.fontStyle,
textAttributes.fontVariant,
textAttributes.allowFontScaling,
textAttributes.letterSpacing,
textAttributes.lineHeight,
textAttributes.alignment,
textAttributes.baseWritingDirection,
textAttributes.textDecorationColor,
textAttributes.textDecorationLineType,
textAttributes.textDecorationLineStyle,
textAttributes.textDecorationLinePattern,
textAttributes.textShadowOffset,
textAttributes.textShadowRadius,
textAttributes.textShadowColor,
textAttributes.isHighlighted,
textAttributes.layoutDirection);
return seed;
}
};
} // namespace std

15
ReactCommon/fabric/core/layout/LayoutConstraints.h
View File

@ -36,14 +36,15 @@ inline bool operator==(
namespace std {
template <>
struct hash<facebook::react::LayoutConstraints> {
size_t operator()(const facebook::react::LayoutConstraints &v) const {
size_t seed = 0;
size_t operator()(
const facebook::react::LayoutConstraints &constraints) const {
auto seed = size_t{0};
folly::hash::hash_combine(
seed, std::hash<facebook::react::Size>()(v.minimumSize));
folly::hash::hash_combine(
seed, std::hash<facebook::react::Size>()(v.maximumSize));
folly::hash::hash_combine(seed, v.layoutDirection);
return hash<int>()(seed);
seed,
constraints.minimumSize,
constraints.maximumSize,
constraints.layoutDirection);
return seed;
}
};
} // namespace std

36
ReactCommon/fabric/graphics/Geometry.h
View File

@ -9,6 +9,7 @@
#include <functional>
#include <tuple>
#include <folly/Hash.h>
#include <react/graphics/Float.h>
namespace facebook {
@ -185,44 +186,51 @@ namespace std {
template <>
struct hash<facebook::react::Point> {
size_t operator()(const facebook::react::Point &point) const {
return hash<decltype(point.x)>{}(point.x) +
hash<decltype(point.y)>{}(point.y);
auto seed = size_t{0};
folly::hash::hash_combine(seed, point.x, point.y);
return seed;
}
};
template <>
struct hash<facebook::react::Size> {
size_t operator()(const facebook::react::Size &size) const {
return hash<decltype(size.width)>{}(size.width) +
hash<decltype(size.height)>{}(size.height);
auto seed = size_t{0};
folly::hash::hash_combine(seed, size.width, size.height);
return seed;
}
};
template <>
struct hash<facebook::react::Rect> {
size_t operator()(const facebook::react::Rect &rect) const {
return hash<decltype(rect.origin)>{}(rect.origin) +
hash<decltype(rect.size)>{}(rect.size);
auto seed = size_t{0};
folly::hash::hash_combine(seed, rect.origin, rect.size);
return seed;
}
};
template <typename T>
struct hash<facebook::react::RectangleEdges<T>> {
size_t operator()(const facebook::react::RectangleEdges<T> &edges) const {
return hash<decltype(edges.left)>{}(edges.left) +
hash<decltype(edges.right)>{}(edges.right) +
hash<decltype(edges.top)>{}(edges.top) +
hash<decltype(edges.bottom)>{}(edges.bottom);
auto seed = size_t{0};
folly::hash::hash_combine(
seed, edges.left, edges.right, edges.top, edges.bottom);
return seed;
}
};
template <typename T>
struct hash<facebook::react::RectangleCorners<T>> {
size_t operator()(const facebook::react::RectangleCorners<T> &corners) const {
return hash<decltype(corners.topLeft)>{}(corners.topLeft) +
hash<decltype(corners.bottomLeft)>{}(corners.bottomLeft) +
hash<decltype(corners.topRight)>{}(corners.topRight) +
hash<decltype(corners.bottomRight)>{}(corners.bottomRight);
auto seed = size_t{0};
folly::hash::hash_combine(
seed,
corners.topLeft,
corners.bottomLeft,
corners.topRight,
corners.bottomRight);
return seed;
}
};

17
ReactCommon/fabric/mounting/ShadowView.h
View File

@ -5,6 +5,7 @@
#pragma once
#include <folly/Hash.h>
#include <react/core/LayoutMetrics.h>
#include <react/core/LocalData.h>
#include <react/core/Props.h>
@ -65,13 +66,15 @@ namespace std {
template <>
struct hash<facebook::react::ShadowView> {
size_t operator()(const facebook::react::ShadowView &shadowView) const {
return std::hash<decltype(shadowView.componentHandle)>{}(
shadowView.componentHandle) +
std::hash<decltype(shadowView.tag)>{}(shadowView.tag) +
std::hash<decltype(shadowView.props)>{}(shadowView.props) +
std::hash<decltype(shadowView.eventEmitter)>{}(
shadowView.eventEmitter) +
std::hash<decltype(shadowView.localData)>{}(shadowView.localData);
auto seed = size_t{0};
folly::hash::hash_combine(
seed,
shadowView.componentHandle,
shadowView.tag,
shadowView.props,
shadowView.eventEmitter,
shadowView.localData);
return seed;
}
};