refactor: Make CScriptVisitor stateless
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1 changed files with 26 additions and 38 deletions
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@ -239,59 +239,47 @@ bool ExtractDestinations(const CScript& scriptPubKey, txnouttype& typeRet, std::
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namespace
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{
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class CScriptVisitor : public boost::static_visitor<bool>
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class CScriptVisitor : public boost::static_visitor<CScript>
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{
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private:
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CScript *script;
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public:
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explicit CScriptVisitor(CScript *scriptin) { script = scriptin; }
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bool operator()(const CNoDestination &dest) const {
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script->clear();
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return false;
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}
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bool operator()(const PKHash &keyID) const {
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script->clear();
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*script << OP_DUP << OP_HASH160 << ToByteVector(keyID) << OP_EQUALVERIFY << OP_CHECKSIG;
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return true;
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}
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bool operator()(const ScriptHash &scriptID) const {
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script->clear();
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*script << OP_HASH160 << ToByteVector(scriptID) << OP_EQUAL;
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return true;
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}
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bool operator()(const WitnessV0KeyHash& id) const
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CScript operator()(const CNoDestination& dest) const
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{
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script->clear();
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*script << OP_0 << ToByteVector(id);
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return true;
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return CScript();
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}
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bool operator()(const WitnessV0ScriptHash& id) const
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CScript operator()(const PKHash& keyID) const
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{
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script->clear();
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*script << OP_0 << ToByteVector(id);
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return true;
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return CScript() << OP_DUP << OP_HASH160 << ToByteVector(keyID) << OP_EQUALVERIFY << OP_CHECKSIG;
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}
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bool operator()(const WitnessUnknown& id) const
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CScript operator()(const ScriptHash& scriptID) const
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{
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script->clear();
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*script << CScript::EncodeOP_N(id.version) << std::vector<unsigned char>(id.program, id.program + id.length);
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return true;
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return CScript() << OP_HASH160 << ToByteVector(scriptID) << OP_EQUAL;
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}
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CScript operator()(const WitnessV0KeyHash& id) const
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{
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return CScript() << OP_0 << ToByteVector(id);
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}
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CScript operator()(const WitnessV0ScriptHash& id) const
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{
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return CScript() << OP_0 << ToByteVector(id);
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}
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CScript operator()(const WitnessUnknown& id) const
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{
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return CScript() << CScript::EncodeOP_N(id.version) << std::vector<unsigned char>(id.program, id.program + id.length);
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}
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};
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const CScriptVisitor g_script_visitor;
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} // namespace
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CScript GetScriptForDestination(const CTxDestination& dest)
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{
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CScript script;
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boost::apply_visitor(CScriptVisitor(&script), dest);
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return script;
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return boost::apply_visitor(::g_script_visitor, dest);
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}
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CScript GetScriptForRawPubKey(const CPubKey& pubKey)
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