Emilio Cobos Álvarez
b2e224354b
Using operator= is not quite sound in presence of destructors and operator overloading. It's perfectly fine to assume that the left-hand-side of an operator= expression is valid memory, however we're using uninitialized memory here, that may not be the case. Use placement new to properly construct tagged unions. I don't need this with any urgency, but it's the right thing to do in presence of complex types, and the current code seems a bomb waiting to explode :)
102 lines
2.3 KiB
C++
102 lines
2.3 KiB
C++
#include <cstdarg>
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#include <cstdint>
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#include <cstdlib>
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#include <new>
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struct LayoutUnit;
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struct UnknownUnit;
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template<typename T, typename Unit>
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struct TypedLength {
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T _0;
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};
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template<typename T>
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using Length = TypedLength<T, UnknownUnit>;
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using LayoutLength = TypedLength<float, LayoutUnit>;
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template<typename T, typename U>
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struct TypedSideOffsets2D {
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T top;
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T right;
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T bottom;
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T left;
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};
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template<typename T>
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using SideOffsets2D = TypedSideOffsets2D<T, UnknownUnit>;
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using LayoutSideOffsets2D = TypedSideOffsets2D<float, LayoutUnit>;
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template<typename T, typename U>
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struct TypedSize2D {
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T width;
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T height;
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};
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template<typename T>
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using Size2D = TypedSize2D<T, UnknownUnit>;
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using LayoutSize2D = TypedSize2D<float, LayoutUnit>;
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template<typename T, typename U>
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struct TypedPoint2D {
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T x;
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T y;
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};
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template<typename T>
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using Point2D = TypedPoint2D<T, UnknownUnit>;
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using LayoutPoint2D = TypedPoint2D<float, LayoutUnit>;
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template<typename T, typename U>
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struct TypedRect {
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TypedPoint2D<T, U> origin;
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TypedSize2D<T, U> size;
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};
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template<typename T>
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using Rect = TypedRect<T, UnknownUnit>;
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using LayoutRect = TypedRect<float, LayoutUnit>;
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template<typename T, typename Src, typename Dst>
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struct TypedTransform2D {
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T m11;
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T m12;
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T m21;
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T m22;
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T m31;
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T m32;
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};
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extern "C" {
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void root(TypedLength<float, UnknownUnit> length_a,
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TypedLength<float, LayoutUnit> length_b,
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Length<float> length_c,
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LayoutLength length_d,
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TypedSideOffsets2D<float, UnknownUnit> side_offsets_a,
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TypedSideOffsets2D<float, LayoutUnit> side_offsets_b,
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SideOffsets2D<float> side_offsets_c,
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LayoutSideOffsets2D side_offsets_d,
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TypedSize2D<float, UnknownUnit> size_a,
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TypedSize2D<float, LayoutUnit> size_b,
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Size2D<float> size_c,
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LayoutSize2D size_d,
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TypedPoint2D<float, UnknownUnit> point_a,
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TypedPoint2D<float, LayoutUnit> point_b,
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Point2D<float> point_c,
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LayoutPoint2D point_d,
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TypedRect<float, UnknownUnit> rect_a,
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TypedRect<float, LayoutUnit> rect_b,
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Rect<float> rect_c,
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LayoutRect rect_d,
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TypedTransform2D<float, UnknownUnit, LayoutUnit> transform_a,
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TypedTransform2D<float, LayoutUnit, UnknownUnit> transform_b);
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} // extern "C"
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