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package packet
import "bytes"
func decodePathAttrFlags(buf *bytes.Buffer, pa *PathAttribute) error {
flags := uint8(0)
err := decode(buf, []interface{}{&flags})
if err != nil {
return err
}
pa.Optional = isOptional(flags)
pa.Transitive = isTransitive(flags)
pa.Partial = isPartial(flags)
pa.ExtendedLength = isExtendedLength(flags)
return nil
}
func isOptional(x uint8) bool {
if x&128 == 128 {
return true
}
return false
}
func isTransitive(x uint8) bool {
if x&64 == 64 {
return true
}
return false
}
func isPartial(x uint8) bool {
if x&32 == 32 {
return true
}
return false
}
func isExtendedLength(x uint8) bool {
if x&16 == 16 {
return true
}
return false
}
func setOptional(x uint8) uint8 {
return x | 128
}
func setTransitive(x uint8) uint8 {
return x | 64
}
func setPartial(x uint8) uint8 {
return x | 32
}
func setExtendedLength(x uint8) uint8 {
return x | 16
}