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<?php |
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|
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namespace TablePress\PhpOffice\PhpSpreadsheet\Calculation\Token; |
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|
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use TablePress\PhpOffice\PhpSpreadsheet\Calculation\Calculation; |
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use TablePress\PhpOffice\PhpSpreadsheet\Calculation\Engine\BranchPruner; |
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use TablePress\PhpOffice\PhpSpreadsheet\Shared\StringHelper; |
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|
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class Stack |
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{ |
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private BranchPruner $branchPruner; |
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|
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/** |
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* The parser stack for formulae. |
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* |
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* @var array<int, array<mixed>> |
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*/ |
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private array $stack = []; |
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|
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/** |
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* Count of entries in the parser stack. |
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*/ |
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private int $count = 0; |
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|
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public function __construct(BranchPruner $branchPruner) |
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{ |
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$this->branchPruner = $branchPruner; |
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} |
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|
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/** |
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* Return the number of entries on the stack. |
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*/ |
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public function count(): int |
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{ |
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return $this->count; |
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} |
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|
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/** |
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* Push a new entry onto the stack. |
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* @param mixed $value |
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*/ |
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public function push(string $type, $value, ?string $reference = null): void |
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{ |
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$stackItem = $this->getStackItem($type, $value, $reference); |
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$this->stack[$this->count++] = $stackItem; |
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|
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if ($type === 'Function') { |
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$localeFunction = Calculation::localeFunc(StringHelper::convertToString($value)); |
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if ($localeFunction != $value) { |
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$this->stack[($this->count - 1)]['localeValue'] = $localeFunction; |
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} |
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} |
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} |
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|
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/** @param array<mixed> $stackItem */ |
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public function pushStackItem(array $stackItem): void |
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{ |
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$this->stack[$this->count++] = $stackItem; |
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} |
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|
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/** @return array<mixed> |
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* @param mixed $value */ |
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public function getStackItem(string $type, $value, ?string $reference = null): array |
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{ |
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$stackItem = [ |
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'type' => $type, |
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'value' => $value, |
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'reference' => $reference, |
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]; |
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|
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// will store the result under this alias |
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$storeKey = $this->branchPruner->currentCondition(); |
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if (isset($storeKey) || $reference === 'NULL') { |
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$stackItem['storeKey'] = $storeKey; |
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} |
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|
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// will only run computation if the matching store key is true |
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$onlyIf = $this->branchPruner->currentOnlyIf(); |
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if (isset($onlyIf) || $reference === 'NULL') { |
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$stackItem['onlyIf'] = $onlyIf; |
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} |
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|
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// will only run computation if the matching store key is false |
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$onlyIfNot = $this->branchPruner->currentOnlyIfNot(); |
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if (isset($onlyIfNot) || $reference === 'NULL') { |
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$stackItem['onlyIfNot'] = $onlyIfNot; |
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} |
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|
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return $stackItem; |
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} |
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|
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/** |
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* Pop the last entry from the stack. |
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* |
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* @return null|array<mixed> |
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*/ |
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public function pop(): ?array |
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{ |
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if ($this->count > 0) { |
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return $this->stack[--$this->count]; |
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} |
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|
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return null; |
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} |
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|
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/** |
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* Return an entry from the stack without removing it. |
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* |
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* @return null|array<mixed> |
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*/ |
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public function last(int $n = 1): ?array |
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{ |
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if ($this->count - $n < 0) { |
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return null; |
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} |
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|
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return $this->stack[$this->count - $n]; |
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} |
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|
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/** |
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* Clear the stack. |
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*/ |
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public function clear(): void |
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{ |
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$this->stack = []; |
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$this->count = 0; |
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} |
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} |
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|
