47 lines
932 B
Go
47 lines
932 B
Go
package bitmask
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// MaskBit is a flag container.
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type MaskBit uint8
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/*
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NewMaskBit is a convenience function.
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It will return a MaskBit with a (referenced) value of 0, so set your consts up accordingly.
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It is highly recommended to set this default as a "None" flag (separate from your iotas!)
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as shown in the example.
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*/
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func NewMaskBit() (m *MaskBit) {
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m = new(MaskBit)
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return
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}
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// HasFlag is true if m has MaskBit flag set/enabled.
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func (m *MaskBit) HasFlag(flag MaskBit) (r bool) {
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var b MaskBit = *m
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if b&flag != 0 {
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r = true
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}
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return
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}
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// AddFlag adds MaskBit flag to m.
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func (m *MaskBit) AddFlag(flag MaskBit) {
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*m |= flag
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return
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}
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// ClearFlag removes MaskBit flag from m.
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func (m *MaskBit) ClearFlag(flag MaskBit) {
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*m &= flag
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return
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}
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// ToggleFlag switches MaskBit flag in m to its inverse; if true, it is now false and vice versa.
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func (m *MaskBit) ToggleFlag(flag MaskBit) {
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*m ^= flag
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return
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}
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