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Issue #1925 - Convert NS_SIDE_TO_FULL_CORNER to a constexpr function.

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This commit is contained in:
Moonchild 2024-08-02 10:36:07 +02:00 • committed by roytam1
commit 2a399b60a1
3 changed files with 13 additions and 5 deletions
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10
gfx/2d/Types.h
View file

@ -479,6 +479,16 @@ constexpr bool SideIsVertical(Side aSide)
return aSide % 2;
}
/* @param aIsSecond: when true, return the clockwise second of the two
* corners associated with aSide. For example, with aSide = eSideBottom the
* result is eCornerBottomRight when aIsSecond is false, and
* eCornerBottomLeft when aIsSecond is true.
*/
constexpr Corner SideToFullCorner(Side aSide, bool aIsSecond)
{
return Corner((aSide + aIsSecond) % 4);
}
} // namespace mozilla
#endif /* MOZILLA_GFX_TYPES_H_ */

2
layout/style/nsStyleConsts.h
View file

@ -20,8 +20,6 @@ namespace mozilla {
// nsStyleCoord.cpp.
// Arguments must not have side effects.
#define NS_SIDE_TO_FULL_CORNER(side_, second_) \
(((side_) + !!(second_)) % 4)
#define NS_SIDE_TO_HALF_CORNER(side_, second_, parallel_) \
((((side_) + !!(second_))*2 + ((side_) + !(parallel_))%2) % 8)

6
layout/style/nsStyleCoord.cpp
View file

@ -380,10 +380,10 @@ CASE(eCornerBottomLeft, false, eCornerBottomLeftX);
CASE(eCornerBottomLeft, true, eCornerBottomLeftY);
#undef CASE
// Validation of NS_SIDE_TO_{FULL,HALF}_CORNER.
// Validation of SideToFullCorner.
#define CASE(side, second, result) \
static_assert(NS_SIDE_TO_FULL_CORNER(side, second) == result, \
"NS_SIDE_TO_FULL_CORNER is wrong")
static_assert(SideToFullCorner(side, second) == result, \
"SideToFullCorner is wrong")
CASE(eSideTop, false, eCornerTopLeft);
CASE(eSideTop, true, eCornerTopRight);