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38 lines
586 B
Go
38 lines
586 B
Go
package head
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import (
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"fmt"
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)
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const (
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hasmorebit FlagsProto = 0x20 << iota
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nofragbit
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topbit
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)
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const (
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impossiblebit = hasmorebit | nofragbit
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flagsbit = topbit | impossiblebit
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protobit = ^flagsbit
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)
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type FlagsProto uint8
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func (pf FlagsProto) String() string {
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return fmt.Sprintf("%02x", uint8(pf))
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}
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func (pf FlagsProto) IsValid() bool {
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return pf&topbit == 0 &&
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pf&impossiblebit != impossiblebit &&
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pf.Proto() < ProtoTop
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}
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func (pf FlagsProto) HasMore() bool {
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return pf&hasmorebit != 0
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}
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func (pf FlagsProto) NoFrag() bool {
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return pf&nofragbit != 0
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}
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