62 lines
1.5 KiB
Rust
62 lines
1.5 KiB
Rust
bitflags! {
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/// Constants shared by multiple CSS Box Alignment properties
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///
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/// These constants match Gecko's `NS_STYLE_ALIGN_*` constants.
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#[derive(MallocSizeOf)]
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#[repr(C)]
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pub struct AlignFlags: u8 {
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/// 'auto'
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const AUTO = 0;
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/// 'normal'
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const NORMAL = 1;
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/// 'start'
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const START = 1 << 1;
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/// 'end'
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const END = 1 << 2;
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const ALIAS = Self::END.bits();
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/// 'flex-start'
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const FLEX_START = 1 << 3;
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const MIXED = 1 << 4 | AlignFlags::FLEX_START.bits() | AlignFlags::END.bits();
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const MIXED_SELF = 1 << 5 | AlignFlags::FLEX_START.bits() | AlignFlags::END.bits();
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}
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}
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bitflags! {
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#[repr(C)]
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pub struct DebugFlags: u32 {
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/// Flag with the topmost bit set of the u32
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const BIGGEST_ALLOWED = 1 << 31;
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}
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}
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bitflags! {
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#[repr(C)]
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pub struct LargeFlags: u64 {
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/// Flag with a very large shift that usually would be narrowed.
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const LARGE_SHIFT = 1u64 << 44;
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const INVERTED = !Self::LARGE_SHIFT.bits();
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}
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}
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// bitflags 2 allows to define types out-of-line for custom derives
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// #[derive(SomeTrait)]
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#[repr(C)]
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pub struct OutOfLine(u32);
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bitflags! {
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impl OutOfLine: u32 {
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const A = 1;
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const B = 2;
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const AB = Self::A.bits() | Self::B.bits();
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}
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}
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#[no_mangle]
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pub extern "C" fn root(
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flags: AlignFlags,
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bigger_flags: DebugFlags,
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largest_flags: LargeFlags,
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out_of_line: OutOfLine,
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) {
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}
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