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<?php |
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namespace BitWasp\Bitcoin\Script\Path; |
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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 $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("LogicOpNode was not for root"); |
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} |
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$descriptorIdx = 0; |
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$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, $keyedIdxMap)) { |
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throw new \RuntimeException("Duplicate logical pathway, invalid ScriptBranch found"); |
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} |
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$keyedIdxMap[$descriptorKey] = $branch; |
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$descriptorIdx++; |
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} |
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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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* Returns a list of paths for this script. This is not |
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* always guaranteed to be in order, so take care that |
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* you actually work out the paths in advance of signing, |
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* and hard code them somehow. |
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* |
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* @return array[] - array of paths |
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*/ |
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public function getPaths() |
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{ |
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return array_map(function (ScriptBranch $branch) { |
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return $branch->getPath(); |
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}, $this->descriptorMap); |
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} |
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/** |
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* Look up the branch by it's path |
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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 getBranchByPath(array $branchDesc) |
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{ |
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$key = json_encode($branchDesc); |
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if (!array_key_exists($key, $this->descriptorMap)) { |
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throw new \RuntimeException("Unknown logical pathway"); |
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} |
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return $this->descriptorMap[$key]; |
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} |
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} |
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Bit-Wasp /
bitcoin-php
