Ophestra Umiker
57c1b3eda6
Invalid enablement is only caused by bad API usage, however panicking on the spot leaves behind messy state that has to be manually cleaned up. Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
50 lines
863 B
Go
50 lines
863 B
Go
package system
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type (
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// Enablement represents an optional system resource
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Enablement uint8
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// Enablements represents optional system resources to share
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Enablements uint64
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)
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const (
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EWayland Enablement = iota
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EX11
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EDBus
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EPulse
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)
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var enablementString = [...]string{
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EWayland: "Wayland",
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EX11: "X11",
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EDBus: "D-Bus",
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EPulse: "PulseAudio",
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}
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const ELen = len(enablementString)
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func (e Enablement) String() string {
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if int(e) >= ELen {
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return "<invalid enablement>"
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}
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return enablementString[e]
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}
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func (e Enablement) Mask() Enablements {
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return 1 << e
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}
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// Has returns whether a feature is enabled
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func (es *Enablements) Has(e Enablement) bool {
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return *es&e.Mask() != 0
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}
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// Set enables a feature
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func (es *Enablements) Set(e Enablement) {
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if es.Has(e) {
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panic("enablement " + e.String() + " set twice")
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}
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*es |= e.Mask()
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}
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