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txscript: Optimize typeOfScript for null data scripts

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This continues the process of converting the typeOfScript function to
use a combination of raw script analysize and the tokenizer instead of
parsed opcode, with the intent of significanty optimizing the function.

In particular, it converts the detection of null data scripts to use raw
script analysis.
This commit is contained in:
Conner Fromknecht 2021-02-04 15:15:45 -08:00 committed by Olaoluwa Osuntokun
parent d02f97e04a
commit d80863da92
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GPG key ID: 3BBD59E99B280306
1 changed files with 3 additions and 2 deletions
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5
txscript/standard.go
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@ -458,6 +458,8 @@ func typeOfScript(scriptVersion uint16, script []byte) ScriptClass {
return ScriptHashTy
case isMultisigScript(scriptVersion, script):
return MultiSigTy
case isNullDataScript(scriptVersion, script):
return NullDataTy
}
pops, err := parseScript(script)
@ -469,9 +471,8 @@ func typeOfScript(scriptVersion uint16, script []byte) ScriptClass {
return WitnessV0PubKeyHashTy
} else if isWitnessScriptHash(pops) {
return WitnessV0ScriptHashTy
} else if isNullData(pops) {
return NullDataTy
}
return NonStandardTy
}