42 lines
897 B
Go
42 lines
897 B
Go
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package item
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// WrittenBookGeneration represents a WrittenBook generation.
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type WrittenBookGeneration struct {
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generation
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}
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type generation uint8
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// OriginalGeneration is the original WrittenBook.
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func OriginalGeneration() WrittenBookGeneration {
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return WrittenBookGeneration{0}
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}
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// CopyGeneration is a copy of the original WrittenBook.
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func CopyGeneration() WrittenBookGeneration {
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return WrittenBookGeneration{1}
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}
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// CopyOfCopyGeneration is a copy of a copy of the original WrittenBook.
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func CopyOfCopyGeneration() WrittenBookGeneration {
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return WrittenBookGeneration{2}
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}
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// Uint8 returns the generation as a uint8.
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func (g generation) Uint8() uint8 {
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return uint8(g)
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}
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// String ...
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func (g generation) String() string {
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switch g {
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case 0:
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return "original"
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case 1:
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return "copy of original"
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case 2:
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return "copy of copy"
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}
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panic("unknown written book generation")
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}
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