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<?php declare(strict_types=1); |
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/** |
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* This file is part of the Phootwork package. |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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* |
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* @license MIT License |
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* @copyright Thomas Gossmann |
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*/ |
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namespace phootwork\lang\parts; |
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use phootwork\lang\Text; |
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/** |
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* Internal Text methods |
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* |
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* @author Thomas Gossmann |
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* @author Cristiano Cinotti |
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*/ |
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trait InternalPart { |
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abstract public function length(): int; |
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/** |
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* @internal |
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* |
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* @param int $offset |
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* |
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* @return int |
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*/ |
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protected function prepareOffset(int $offset): int { |
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$len = $this->length(); |
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if ($offset < -$len || $offset > $len) { |
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throw new \InvalidArgumentException('Offset must be in range [-len, len]'); |
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} |
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if ($offset < 0) { |
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$offset += $len; |
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} |
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return $offset; |
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} |
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/** |
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* @internal |
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* |
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* @param int $offset |
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* @param int $length |
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* |
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* @throws \InvalidArgumentException |
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* |
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* @return int |
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*/ |
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protected function prepareLength(int $offset, ?int $length): int { |
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$length = (null === $length) ? ($this->length() - $offset) : ( |
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($length < 0) ? ($length + $this->length() - $offset) : $length); |
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if ($length < 0) { |
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throw new \InvalidArgumentException('Length too small'); |
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} |
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if ($offset + $length > $this->length()) { |
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throw new \InvalidArgumentException('Length too large'); |
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} |
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return $length; |
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} |
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/** |
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* @internal |
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* |
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* @param string|Text $string |
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* @param string $name |
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* |
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* @throws \InvalidArgumentException |
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*/ |
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3 |
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protected function verifyNotEmpty($string, string $name): void { |
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if (empty($string)) { |
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throw new \InvalidArgumentException("$name cannot be empty"); |
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} |
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} |
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/** |
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* @internal |
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* |
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* @param int $value |
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* @param string $name |
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* |
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* @throws \InvalidArgumentException |
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*/ |
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3 |
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protected function verifyPositive(int $value, string $name): void { |
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if ($value <= 0) { |
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throw new \InvalidArgumentException("$name has to be positive"); |
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} |
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1 |
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} |
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/** |
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* @internal |
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* |
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* @param int $value |
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* @param string $name |
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* |
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* @throws \InvalidArgumentException |
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*/ |
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protected function verifyNotNegative(int $value, string $name): void { |
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if ($value < 0) { |
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throw new \InvalidArgumentException("$name can not be negative"); |
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} |
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} |
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} |
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phootwork /
phootwork
