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txscript: Remove unused isNullData function.

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Dave Collins 2019-03-13 01:11:51 -05:00 committed by Olaoluwa Osuntokun
parent d80863da92
commit 78046b3815
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1 changed files with 0 additions and 18 deletions
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18
txscript/standard.go
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@ -386,24 +386,6 @@ func isWitnessScriptHashScript(script []byte) bool {
return extractWitnessScriptHash(script) != nil return extractWitnessScriptHash(script) != nil
} }
// isNullData returns true if the passed script is a null data transaction,
// false otherwise.
func isNullData(pops []parsedOpcode) bool {
// A nulldata transaction is either a single OP_RETURN or an
// OP_RETURN SMALLDATA (where SMALLDATA is a data push up to
// MaxDataCarrierSize bytes).
l := len(pops)
if l == 1 && pops[0].opcode.value == OP_RETURN {
return true
}
return l == 2 &&
pops[0].opcode.value == OP_RETURN &&
(isSmallInt(pops[1].opcode.value) || pops[1].opcode.value <=
OP_PUSHDATA4) &&
len(pops[1].data) <= MaxDataCarrierSize
}
// isNullDataScript returns whether or not the passed script is a standard // isNullDataScript returns whether or not the passed script is a standard
// null data script. // null data script.
// //