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transaction_builder: expandInput - check p2sh early, can avoid redundant assignments

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This commit is contained in:
Thomas Kerin 2017-01-03 19:04:05 +01:00 committed by Daniel Cousens
parent a32cc5b3be
commit c5541c8f96
1 changed files with 1 additions and 9 deletions
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10
src/transaction_builder.js
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@ -90,8 +90,6 @@ function expandInput (scriptSig, witnessStack) {
if (!redeemScript.equals(witnessProgram)) {
throw new Error('Redeem script didn\'t match witnessScript')
}
prevOutScript = bscript.scriptHash.output.encode(bcrypto.hash160(witnessProgram))
prevOutType = scriptTypes.P2SH
}
if (SIGNABLE.indexOf(bscript.classifyOutput(witnessScript)) === -1) {
@ -117,26 +115,20 @@ function expandInput (scriptSig, witnessStack) {
if (!redeemScript.equals(witnessProgram)) {
throw new Error('Redeem script did not have the right witness program')
}
prevOutScript = bscript.scriptHash.output.encode(bcrypto.hash160(witnessProgram))
prevOutType = scriptTypes.P2SH
}
scriptType = scriptTypes.P2PKH
chunks = witnessStack
} else if (redeemScript) {
redeemScriptType = bscript.classifyOutput(redeemScript)
if (P2SH.indexOf(redeemScriptType) === -1) {
throw new Error('Bad redeemscript!')
}
script = redeemScript
scriptType = redeemScriptType
prevOutType = scriptTypes.P2SH
prevOutScript = bscript.scriptHash.output.encode(bcrypto.hash160(redeemScript))
chunks = scriptSigChunks.slice(0, -1)
} else {
var bareType = bscript.classifyInput(scriptSig)
prevOutType = scriptType = bareType
prevOutType = scriptType = bscript.classifyInput(scriptSig)
chunks = scriptSigChunks
}