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<?php |
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namespace BitWasp\Bitcoin\Script\Path; |
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use BitWasp\Bitcoin\Script\ScriptFactory; |
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use BitWasp\Bitcoin\Script\ScriptInterface; |
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class ParsedScript |
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{ |
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/** |
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* @var ScriptInterface |
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*/ |
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private $script; |
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/** |
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* @var LogicOpNode |
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*/ |
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private $ast; |
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/** |
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* @var array |
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*/ |
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private $branches; |
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/** |
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* @var array |
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*/ |
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private $branchMap; |
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/** |
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* @var array |
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*/ |
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private $descriptorMap; |
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/** |
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* ParsedScript constructor. |
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* @param ScriptInterface $script |
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* @param LogicOpNode $ast |
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* @param ScriptBranch[] $branches |
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*/ |
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public function __construct(ScriptInterface $script, LogicOpNode $ast, array $branches) |
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{ |
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if (!$ast->isRoot()) { |
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throw new \RuntimeException("AST is for invalid node, wasn't root"); |
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} |
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$descriptorIdx = 0; |
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$keyedBranchMap = []; // idx => ScriptBranch |
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$keyedIdxMap = []; // descriptor => ScriptBranch |
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foreach ($branches as $branch) { |
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$descriptor = $branch->getPath(); |
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$descriptorKey = json_encode($descriptor); |
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if (array_key_exists($descriptorKey, $keyedBranchMap)) { |
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throw new \RuntimeException("Duplicate branch descriptor, invalid ScriptBranch found"); |
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} |
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$keyedBranchMap[] = $branch; |
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$keyedIdxMap[$descriptorKey] = $descriptorIdx; |
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$descriptorIdx++; |
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} |
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$this->branchMap = $keyedBranchMap; |
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$this->descriptorMap = $keyedIdxMap; |
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$this->script = $script; |
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$this->ast = $ast; |
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} |
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/** |
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* @return bool |
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*/ |
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public function hasMultipleBranches() |
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{ |
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return $this->ast->hasChildren(); |
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} |
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/** |
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* @param array $branchDesc |
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* @return int |
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*/ |
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private function getBranchIdx(array $branchDesc) |
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{ |
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$descriptorKey = json_encode($branchDesc); |
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if (array_key_exists($descriptorKey, $this->descriptorMap)) { |
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return $this->descriptorMap[$descriptorKey]; |
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} |
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throw new \RuntimeException("Unknown branch"); |
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} |
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/** |
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* @param array $branchDesc |
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* @return bool|ScriptBranch |
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*/ |
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public function getBranchByDesc(array $branchDesc) |
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{ |
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$idx = $this->getBranchIdx($branchDesc); |
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if (!array_key_exists($idx, $this->branchMap)) { |
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throw new \RuntimeException("Coding error, missing entry in branch map for desc"); |
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} |
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return $this->branchMap[$idx]; |
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} |
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/** |
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* @param int $idx |
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* @return bool|ScriptBranch |
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*/ |
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public function getBranchByIdx($idx) |
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{ |
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if (array_key_exists($idx, $this->branchMap)) { |
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return $this->branchMap[$idx]; |
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} |
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throw new \RuntimeException("Unknown branch index"); |
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} |
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/** |
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* @param $branch |
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* @return ScriptInterface|bool |
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*/ |
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public function getMutuallyExclusiveOps($branch) |
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{ |
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if (!($branch = $this->getBranchByDesc($branch))) { |
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return false; |
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} |
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$steps = $branch->getSignSteps(); |
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$ops = []; |
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foreach ($steps as $step) { |
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$ops = array_merge($ops, $step->all()); |
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} |
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return ScriptFactory::fromOperations($ops); |
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} |
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} |
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Bit-Wasp /
bitcoin-php
This check marks private properties in classes that are never used. Those properties can be removed.