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<?php
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namespace Matrix\Operators;
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use Matrix\Matrix;
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use Matrix\Exception;
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abstract class Operator
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{
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    /**
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     * Stored internally as a 2-dimension array of values
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     *
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     * @property mixed[][] $matrix
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     **/
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    protected $matrix;
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    /**
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     * Number of rows in the matrix
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     *
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     * @property integer $rows
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     **/
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    protected $rows;
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    /**
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     * Number of columns in the matrix
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     *
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     * @property integer $columns
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     **/
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    protected $columns;
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    /**
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     * Create an new handler object for the operation
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     *
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     * @param Matrix $matrix The base Matrix object on which the operation will be performed
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     */
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    public function __construct(Matrix $matrix)
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    {
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        $this->rows = $matrix->rows;
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        $this->columns = $matrix->columns;
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        $this->matrix = $matrix->toArray();
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    }
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    /**
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     * Compare the dimensions of the matrices being operated on to see if they are valid for addition/subtraction
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     *
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     * @param Matrix $matrix The second Matrix object on which the operation will be performed
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     * @throws Exception
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     */
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    protected function validateMatchingDimensions(Matrix $matrix): void
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    {
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        if (($this->rows != $matrix->rows) || ($this->columns != $matrix->columns)) {
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            throw new Exception('Matrices have mismatched dimensions');
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        }
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    }
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    /**
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     * Compare the dimensions of the matrices being operated on to see if they are valid for multiplication/division
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     *
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     * @param Matrix $matrix The second Matrix object on which the operation will be performed
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     * @throws Exception
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     */
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    protected function validateReflectingDimensions(Matrix $matrix): void
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    {
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        if ($this->columns != $matrix->rows) {
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            throw new Exception('Matrices have mismatched dimensions');
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        }
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    }
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    /**
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     * Return the result of the operation
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     *
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     * @return Matrix
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     */
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    public function result(): Matrix
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    {
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        return new Matrix($this->matrix);
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    }
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}