48 lines
695 B
Go
48 lines
695 B
Go
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package missinggo
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type (
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SameLessFunc func() (same, less bool)
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MultiLess struct {
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ok bool
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less bool
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}
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)
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func (me *MultiLess) Less() bool {
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return me.ok && me.less
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}
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func (me *MultiLess) Final() bool {
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if !me.ok {
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panic("undetermined")
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}
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return me.less
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}
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func (me *MultiLess) FinalOk() (left, ok bool) {
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return me.less, me.ok
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}
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func (me *MultiLess) Next(f SameLessFunc) {
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if me.ok {
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return
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}
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same, less := f()
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if same {
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return
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}
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me.ok = true
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me.less = less
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}
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func (me *MultiLess) StrictNext(same, less bool) {
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if me.ok {
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return
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}
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me.Next(func() (bool, bool) { return same, less })
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}
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func (me *MultiLess) NextBool(l, r bool) {
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me.StrictNext(l == r, l)
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}
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