/
pluralRule.go
48 lines (43 loc) · 1019 Bytes
/
pluralRule.go
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//Handle plurality rules
package translate
type cmpOp uint8
type pluralRule struct {
op cmpOp //For cmpBetween the top 5 bits (0-31) are added to i0 for the upper limit of the between comparison. cmpBetweenExtraBit gives (32-63)
i0 uint8
}
func (pr pluralRule) getOp() cmpOp {
return cmpOp(uint8(pr.op) & 7)
}
const (
cmpAll cmpOp = iota
cmpEquals
cmpLess
cmpLessEqual
cmpGreater
cmpGreaterEqual
cmpBetween
cmpBetweenExtraBit
_ = 255
)
func (pr pluralRule) cmp(pluralCount uint8) bool {
switch pr.getOp() {
case cmpAll:
return true
case cmpEquals:
return pluralCount == pr.i0
case cmpLess:
return pluralCount < pr.i0
case cmpLessEqual:
return pluralCount <= pr.i0
case cmpGreater:
return pluralCount > pr.i0
case cmpGreaterEqual:
return pluralCount >= pr.i0
case cmpBetween:
return pr.i0 <= pluralCount && (pr.i0+(uint8(pr.op)>>3)) >= pluralCount
case cmpBetweenExtraBit:
return pr.i0 <= pluralCount && (pr.i0+(uint8(pr.op)>>3))+32 >= pluralCount
default:
return false
}
}