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<?php |
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/** |
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* @package s9e\TextFormatter |
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* @copyright Copyright (c) 2010-2019 The s9e Authors |
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* @license http://www.opensource.org/licenses/mit-license.php The MIT License |
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*/ |
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namespace s9e\TextFormatter\Configurator\RendererGenerators\PHP\XPathConvertor\Convertors; |
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class Math extends AbstractConvertor |
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{ |
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/** |
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* {@inheritdoc} |
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*/ |
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80 |
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public function getMatchers(): array |
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{ |
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$number = '((?&Attribute)|(?&MathSubExpr)|(?&Number)|(?&Parameter))'; |
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$math = '((?&Math)|' . substr($number, 1); |
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return [ |
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'Math:Addition' => $number . ' \\+ ' . $math, |
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'Math:Division' => $number . ' div ' . $math, |
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'Math:MathSubExpr' => '\\( ((?&Math)) \\)', |
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'Math:Multiplication' => $number . ' \\* ' . $math, |
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'Math:Substraction' => $number . ' - ' . $math |
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]; |
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} |
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/** |
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* Convert an addition |
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* |
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* @param string $expr1 |
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* @param string $expr2 |
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* @return string |
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*/ |
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public function parseAddition($expr1, $expr2) |
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{ |
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return $this->convertOperation($expr1, '+', $expr2); |
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} |
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/** |
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* Convert a division |
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* |
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* @param string $expr1 |
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* @param string $expr2 |
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* @return string |
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*/ |
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public function parseDivision($expr1, $expr2) |
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{ |
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return $this->convertOperation($expr1, '/', $expr2); |
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} |
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/** |
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* Convert a math subexpression |
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* |
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* @param string $expr |
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* @return string |
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*/ |
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public function parseMathSubExpr($expr) |
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{ |
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return '(' . $this->recurse($expr) . ')'; |
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} |
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/** |
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* Convert a multiplication |
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* |
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* @param string $expr1 |
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* @param string $expr2 |
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* @return string |
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*/ |
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public function parseMultiplication($expr1, $expr2) |
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{ |
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return $this->convertOperation($expr1, '*', $expr2); |
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} |
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/** |
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* Convert a substraction |
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* |
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* @param string $expr1 |
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* @param string $expr2 |
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* @return string |
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*/ |
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public function parseSubstraction($expr1, $expr2) |
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{ |
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return $this->convertOperation($expr1, '-', $expr2); |
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} |
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/** |
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* Convert an operation |
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* |
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* @param string $expr1 |
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* @param string $operator |
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* @param string $expr2 |
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* @return string |
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*/ |
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protected function convertOperation($expr1, $operator, $expr2) |
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{ |
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$expr1 = $this->recurse($expr1); |
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$expr2 = $this->recurse($expr2); |
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// Prevent two consecutive minus signs to be interpreted as a post-decrement operator |
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if ($operator === '-' && $expr2[0] === '-') |
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{ |
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$operator .= ' '; |
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} |
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return $expr1 . $operator . $expr2; |
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} |
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} |
s9e /
TextFormatter
