package and depencies

vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Calculation/Engine/ArrayArgumentHelper.php

@@ -0,0 +1,209 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Calculation\Engine;
+
+use PhpOffice\PhpSpreadsheet\Calculation\Exception;
+
+class ArrayArgumentHelper
+{
+    /**
+     * @var int
+     */
+    protected $indexStart = 0;
+
+    /**
+     * @var array
+     */
+    protected $arguments;
+
+    /**
+     * @var int
+     */
+    protected $argumentCount;
+
+    /**
+     * @var array
+     */
+    protected $rows;
+
+    /**
+     * @var array
+     */
+    protected $columns;
+
+    public function initialise(array $arguments): void
+    {
+        $keys = array_keys($arguments);
+        $this->indexStart = (int) array_shift($keys);
+        $this->rows = $this->rows($arguments);
+        $this->columns = $this->columns($arguments);
+
+        $this->argumentCount = count($arguments);
+        $this->arguments = $this->flattenSingleCellArrays($arguments, $this->rows, $this->columns);
+
+        $this->rows = $this->rows($arguments);
+        $this->columns = $this->columns($arguments);
+
+        if ($this->arrayArguments() > 2) {
+            throw new Exception('Formulae with more than two array arguments are not supported');
+        }
+    }
+
+    public function arguments(): array
+    {
+        return $this->arguments;
+    }
+
+    public function hasArrayArgument(): bool
+    {
+        return $this->arrayArguments() > 0;
+    }
+
+    public function getFirstArrayArgumentNumber(): int
+    {
+        $rowArrays = $this->filterArray($this->rows);
+        $columnArrays = $this->filterArray($this->columns);
+
+        for ($index = $this->indexStart; $index < $this->argumentCount; ++$index) {
+            if (isset($rowArrays[$index]) || isset($columnArrays[$index])) {
+                return ++$index;
+            }
+        }
+
+        return 0;
+    }
+
+    public function getSingleRowVector(): ?int
+    {
+        $rowVectors = $this->getRowVectors();
+
+        return count($rowVectors) === 1 ? array_pop($rowVectors) : null;
+    }
+
+    private function getRowVectors(): array
+    {
+        $rowVectors = [];
+        for ($index = $this->indexStart; $index < ($this->indexStart + $this->argumentCount); ++$index) {
+            if ($this->rows[$index] === 1 && $this->columns[$index] > 1) {
+                $rowVectors[] = $index;
+            }
+        }
+
+        return $rowVectors;
+    }
+
+    public function getSingleColumnVector(): ?int
+    {
+        $columnVectors = $this->getColumnVectors();
+
+        return count($columnVectors) === 1 ? array_pop($columnVectors) : null;
+    }
+
+    private function getColumnVectors(): array
+    {
+        $columnVectors = [];
+        for ($index = $this->indexStart; $index < ($this->indexStart + $this->argumentCount); ++$index) {
+            if ($this->rows[$index] > 1 && $this->columns[$index] === 1) {
+                $columnVectors[] = $index;
+            }
+        }
+
+        return $columnVectors;
+    }
+
+    public function getMatrixPair(): array
+    {
+        for ($i = $this->indexStart; $i < ($this->indexStart + $this->argumentCount - 1); ++$i) {
+            for ($j = $i + 1; $j < $this->argumentCount; ++$j) {
+                if (isset($this->rows[$i], $this->rows[$j])) {
+                    return [$i, $j];
+                }
+            }
+        }
+
+        return [];
+    }
+
+    public function isVector(int $argument): bool
+    {
+        return $this->rows[$argument] === 1 || $this->columns[$argument] === 1;
+    }
+
+    public function isRowVector(int $argument): bool
+    {
+        return $this->rows[$argument] === 1;
+    }
+
+    public function isColumnVector(int $argument): bool
+    {
+        return $this->columns[$argument] === 1;
+    }
+
+    public function rowCount(int $argument): int
+    {
+        return $this->rows[$argument];
+    }
+
+    public function columnCount(int $argument): int
+    {
+        return $this->columns[$argument];
+    }
+
+    private function rows(array $arguments): array
+    {
+        return array_map(
+            function ($argument) {
+                return is_countable($argument) ? count($argument) : 1;
+            },
+            $arguments
+        );
+    }
+
+    private function columns(array $arguments): array
+    {
+        return array_map(
+            function ($argument) {
+                return is_array($argument) && is_array($argument[array_keys($argument)[0]])
+                    ? count($argument[array_keys($argument)[0]])
+                    : 1;
+            },
+            $arguments
+        );
+    }
+
+    public function arrayArguments(): int
+    {
+        $count = 0;
+        foreach (array_keys($this->arguments) as $argument) {
+            if ($this->rows[$argument] > 1 || $this->columns[$argument] > 1) {
+                ++$count;
+            }
+        }
+
+        return $count;
+    }
+
+    private function flattenSingleCellArrays(array $arguments, array $rows, array $columns): array
+    {
+        foreach ($arguments as $index => $argument) {
+            if ($rows[$index] === 1 && $columns[$index] === 1) {
+                while (is_array($argument)) {
+                    $argument = array_pop($argument);
+                }
+                $arguments[$index] = $argument;
+            }
+        }
+
+        return $arguments;
+    }
+
+    private function filterArray(array $array): array
+    {
+        return array_filter(
+            $array,
+            function ($value) {
+                return $value > 1;
+            }
+        );
+    }
+}