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<?php |
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/* @description Transformation Style Sheets - Revolutionising PHP templating * |
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* @author Tom Butler [email protected] * |
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* @copyright 2017 Tom Butler <[email protected]> | https://r.je/ * |
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* @license http://www.opensource.org/licenses/bsd-license.php BSD License * |
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* @version 1.2 */ |
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namespace Transphporm\Parser; |
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class ValueResult { |
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private $result = []; |
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/* |
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The next operation to perform. Will be one of the following: |
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ARG - A new value e.g, "a","b" becomes ["a", "b"] |
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CONCAT - Concat onto the current arg e.g "a" + "b" becomes ["ab"] |
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NOT - Boolean operation "a" != "b" becomes [true] |
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EQUALS - Boolean operation "a" = "b" becomes [false] |
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*/ |
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private $mode = Tokenizer::ARG; |
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//Processes $newValue using $mode. Either concats to the current argument, adds a new argument |
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//Or usess the two arguments for a boolean comparison |
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public function processValue($newValue) { |
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$funcs = [ |
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Tokenizer::ARG => 'arg', |
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Tokenizer::CONCAT => 'concat', |
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Tokenizer::EQUALS => 'equals', |
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Tokenizer::NOT => 'not', |
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Tokenizer::SUBTRACT => 'sub', |
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Tokenizer::MULTIPLY => 'mult', |
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Tokenizer::DIVIDE => 'div', |
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Tokenizer::GREATER_THAN => 'greater', |
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Tokenizer::LOWER_THAN => 'lower', |
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Tokenizer::IN => 'in' |
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]; |
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if ($funcs[$this->mode] === 'concat' && is_numeric($newValue) |
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&& is_numeric($this->result[count($this->result)-1])) |
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$this->add($newValue); |
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else |
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$this->{$funcs[$this->mode]}($newValue); |
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} |
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public function in($value) { |
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if (!is_array($value)) throw new \Exception(' `in` can only be used with arrays'); |
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$this->result[count($this->result)-1] = in_array($this->result[count($this->result)-1], $value); |
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} |
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public function arg($value) { |
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$this->result[] = $value; |
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} |
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public function concat($value) { |
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$this->result[count($this->result)-1] .= $value; |
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} |
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public function not($value) { |
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$this->result[count($this->result)-1] = $this->result[count($this->result)-1] != $value; |
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} |
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public function equals($value) { |
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$this->result[count($this->result)-1] = $this->result[count($this->result)-1] == $value; |
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} |
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public function greater($value) { |
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$this->result[count($this->result)-1] = $this->result[count($this->result)-1] > $value; |
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} |
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public function lower($value) { |
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$this->result[count($this->result)-1] = $this->result[count($this->result)-1] < $value; |
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} |
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public function add($value) { |
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$this->result[count($this->result)-1] += $value; |
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} |
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public function sub($value) { |
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$this->result[count($this->result)-1] -= $value; |
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} |
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public function mult($value) { |
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$this->result[count($this->result)-1] *= $value; |
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} |
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public function div($value) { |
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$this->result[count($this->result)-1] /= $value; |
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} |
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public function setMode($mode) { |
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$this->mode = $mode; |
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} |
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public function getMode() { |
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return $this->mode; |
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} |
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public function getResult() { |
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return $this->result; |
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} |
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public function pop() { |
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return array_pop($this->result); |
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} |
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private function write($index, $value, $allowNull = false) { |
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if ($value !== null || $allowNull === true) { |
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$this->result[$index] = $value; |
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} |
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} |
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//Postprocessing - replace values with null where allowed, or override a value at position |
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public function postProcess(ValueData $data, $val, $overrideVal, $allowNull) { |
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foreach ($this->getResult() as $i => $value) { |
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if (is_scalar($value)) { |
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$val = ($overrideVal == $val) ? $data->read($value) : $overrideVal; |
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$this->write($i, $val, $allowNull); |
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} |
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} |
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} |
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public function clear() { |
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$this->result = []; |
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} |
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} |
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