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<?php |
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namespace BitWasp\Bitcoin\Script; |
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use BitWasp\Bitcoin\Address\SegwitAddress; |
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use BitWasp\Bitcoin\Exceptions\WitnessScriptException; |
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class WitnessScript extends Script |
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{ |
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/** |
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* @var ScriptInterface |
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*/ |
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private $outputScript; |
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/** |
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* @var \BitWasp\Buffertools\BufferInterface |
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*/ |
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protected $witnessScriptHash; |
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/** |
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* @var WitnessProgram|null |
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*/ |
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private $witnessProgram; |
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/** |
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* @var SegwitAddress |
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*/ |
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private $address; |
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/** |
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* WitnessScript constructor. |
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* @param ScriptInterface $script |
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* @param Opcodes|null $opcodes |
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* @throws WitnessScriptException |
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*/ |
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public function __construct(ScriptInterface $script, Opcodes $opcodes = null) |
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{ |
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if ($script instanceof self) { |
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throw new WitnessScriptException("Cannot nest V0 P2WSH scripts."); |
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} else if ($script instanceof P2shScript) { |
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throw new WitnessScriptException("Cannot embed a P2SH script in a V0 P2WSH script."); |
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} |
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parent::__construct($script->getBuffer(), $opcodes); |
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$this->witnessScriptHash = $script->getWitnessScriptHash(); |
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$this->outputScript = ScriptFactory::scriptPubKey()->p2wsh($this->witnessScriptHash); |
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} |
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/** |
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* @return WitnessProgram |
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*/ |
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public function getWitnessProgram() |
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{ |
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if (null === $this->witnessProgram) { |
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$this->witnessProgram = WitnessProgram::v0($this->witnessScriptHash); |
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} |
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return $this->witnessProgram; |
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} |
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/** |
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* @return SegwitAddress |
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*/ |
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public function getAddress() |
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{ |
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if (null === $this->address) { |
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$this->address = new SegwitAddress($this->getWitnessProgram()); |
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} |
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return $this->address; |
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} |
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/** |
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* @return ScriptInterface |
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*/ |
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public function getOutputScript() |
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{ |
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return $this->getWitnessProgram()->getScript(); |
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} |
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} |
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Bit-Wasp /
bitcoin-php
