Priority
A priority object for comparing priorities.
using System;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
namespace AngleSharp.Css
{
[StructLayout(LayoutKind.Explicit, CharSet = CharSet.Unicode, Pack = 1)]
public readonly struct Priority : IEquatable<Priority>, IComparable<Priority>
{
[FieldOffset(0)]
private readonly byte ;
[FieldOffset(1)]
private readonly byte _classes;
[FieldOffset(2)]
private readonly byte _ids;
[FieldOffset(3)]
private readonly byte _inlines;
[FieldOffset(0)]
private readonly uint _priority;
public static readonly Priority Zero = new Priority(0);
public static readonly Priority OneTag = new Priority(0, 0, 0, 1);
public static readonly Priority OneClass = new Priority(0, 0, 1, 0);
public static readonly Priority OneId = new Priority(0, 1, 0, 0);
public static readonly Priority Inline = new Priority(1, 0, 0, 0);
public byte Tags => _tags;
public byte Classes => _classes;
public byte Ids => _ids;
public byte Inlines => _inlines;
public Priority(uint priority)
{
_inlines = (_ids = (_classes = (_tags = 0)));
_priority = priority;
}
public Priority(byte inlines, byte ids, byte classes, byte tags)
{
_priority = 0;
_inlines = inlines;
_ids = ids;
_classes = classes;
_tags = tags;
}
public static Priority operator +(Priority a, Priority b)
{
return new Priority(a._priority + b._priority);
}
public static bool operator ==(Priority a, Priority b)
{
return a._priority == b._priority;
}
public static bool operator >(Priority a, Priority b)
{
return a._priority > b._priority;
}
public static bool operator >=(Priority a, Priority b)
{
return a._priority >= b._priority;
}
public static bool operator <(Priority a, Priority b)
{
return a._priority < b._priority;
}
public static bool operator <=(Priority a, Priority b)
{
return a._priority <= b._priority;
}
public static bool operator !=(Priority a, Priority b)
{
return a._priority != b._priority;
}
public bool Equals(Priority other)
{
return _priority == other._priority;
}
[System.Runtime.CompilerServices.NullableContext(2)]
public override bool Equals(object obj)
{
if (obj is Priority) {
Priority other = (Priority)obj;
return Equals(other);
}
return false;
}
public override int GetHashCode()
{
return (int)_priority;
}
public int CompareTo(Priority other)
{
if (!(this == other)) {
if (!(this > other))
return -1;
return 1;
}
return 0;
}
[System.Runtime.CompilerServices.NullableContext(1)]
public override string ToString()
{
return $"""{_inlines}""{_ids}""{_classes}""{_tags}""";
}
}
}