update less.php to PHP 7.x compatible fork

1 files changed, 201 insertions, 0 deletions

diff --git a/lib/less.php/Tree/Dimension.php b/lib/less.php/Tree/Dimension.php
new file mode 100644
index 0000000..2bfb9d5
--- /dev/null
+++ b/lib/less.php/Tree/Dimension.php
@@ -0,0 +1,201 @@
+<?php
+
+/**
+ * Dimension
+ *
+ * @package Less
+ * @subpackage tree
+ */
+class Less_Tree_Dimension extends Less_Tree{
+
+	public $value;
+	public $unit;
+	public $type = 'Dimension';
+
+    public function __construct($value, $unit = null){
+        $this->value = floatval($value);
+
+		if( $unit && ($unit instanceof Less_Tree_Unit) ){
+			$this->unit = $unit;
+		}elseif( $unit ){
+			$this->unit = new Less_Tree_Unit( array($unit) );
+		}else{
+			$this->unit = new Less_Tree_Unit( );
+		}
+    }
+
+    public function accept( $visitor ){
+		$this->unit = $visitor->visitObj( $this->unit );
+	}
+
+    public function compile(){
+        return $this;
+    }
+
+    public function toColor() {
+        return new Less_Tree_Color(array($this->value, $this->value, $this->value));
+    }
+
+    /**
+     * @see Less_Tree::genCSS
+     */
+	public function genCSS( $output ){
+
+		if( Less_Parser::$options['strictUnits'] && !$this->unit->isSingular() ){
+			throw new Less_Exception_Compiler("Multiple units in dimension. Correct the units or use the unit function. Bad unit: ".$this->unit->toString());
+		}
+
+		$value = Less_Functions::fround( $this->value );
+		$strValue = (string)$value;
+
+		if( $value !== 0 && $value < 0.000001 && $value > -0.000001 ){
+			// would be output 1e-6 etc.
+			$strValue = number_format($strValue,10);
+			$strValue = preg_replace('/\.?0+$/','', $strValue);
+		}
+
+		if( Less_Parser::$options['compress'] ){
+			// Zero values doesn't need a unit
+			if( $value === 0 && $this->unit->isLength() ){
+				$output->add( $strValue );
+				return $strValue;
+			}
+
+			// Float values doesn't need a leading zero
+			if( $value > 0 && $value < 1 && $strValue[0] === '0' ){
+				$strValue = substr($strValue,1);
+			}
+		}
+
+		$output->add( $strValue );
+		$this->unit->genCSS( $output );
+	}
+
+    public function __toString(){
+        return $this->toCSS();
+    }
+
+    // In an operation between two Dimensions,
+    // we default to the first Dimension's unit,
+    // so `1px + 2em` will yield `3px`.
+
+    /**
+     * @param string $op
+     */
+    public function operate( $op, $other){
+
+		$value = Less_Functions::operate( $op, $this->value, $other->value);
+		$unit = clone $this->unit;
+
+		if( $op === '+' || $op === '-' ){
+
+			if( !$unit->numerator && !$unit->denominator ){
+				$unit->numerator = $other->unit->numerator;
+				$unit->denominator = $other->unit->denominator;
+			}elseif( !$other->unit->numerator && !$other->unit->denominator ){
+				// do nothing
+			}else{
+				$other = $other->convertTo( $this->unit->usedUnits());
+
+				if( Less_Parser::$options['strictUnits'] && $other->unit->toString() !== $unit->toCSS() ){
+					throw new Less_Exception_Compiler("Incompatible units. Change the units or use the unit function. Bad units: '" . $unit->toString() . "' and " . $other->unit->toString() . "'.");
+				}
+
+				$value = Less_Functions::operate( $op, $this->value, $other->value);
+			}
+		}elseif( $op === '*' ){
+			$unit->numerator = array_merge($unit->numerator, $other->unit->numerator);
+			$unit->denominator = array_merge($unit->denominator, $other->unit->denominator);
+			sort($unit->numerator);
+			sort($unit->denominator);
+			$unit->cancel();
+		}elseif( $op === '/' ){
+			$unit->numerator = array_merge($unit->numerator, $other->unit->denominator);
+			$unit->denominator = array_merge($unit->denominator, $other->unit->numerator);
+			sort($unit->numerator);
+			sort($unit->denominator);
+			$unit->cancel();
+		}
+		return new Less_Tree_Dimension( $value, $unit);
+    }
+
+	public function compare($other) {
+		if ($other instanceof Less_Tree_Dimension) {
+
+			if( $this->unit->isEmpty() || $other->unit->isEmpty() ){
+				$a = $this;
+				$b = $other;
+			} else {
+				$a = $this->unify();
+				$b = $other->unify();
+				if( $a->unit->compare($b->unit) !== 0 ){
+					return -1;
+				}
+			}
+			$aValue = $a->value;
+			$bValue = $b->value;
+
+			if ($bValue > $aValue) {
+				return -1;
+			} elseif ($bValue < $aValue) {
+				return 1;
+			} else {
+				return 0;
+			}
+		} else {
+			return -1;
+		}
+	}
+
+    public function unify() {
+		return $this->convertTo(array('length'=> 'px', 'duration'=> 's', 'angle' => 'rad' ));
+	}
+
+    public function convertTo($conversions) {
+		$value = $this->value;
+		$unit = clone $this->unit;
+
+		if( is_string($conversions) ){
+			$derivedConversions = array();
+			foreach( Less_Tree_UnitConversions::$groups as $i ){
+				if( isset(Less_Tree_UnitConversions::${$i}[$conversions]) ){
+					$derivedConversions = array( $i => $conversions);
+				}
+			}
+			$conversions = $derivedConversions;
+		}
+
+
+		foreach($conversions as $groupName => $targetUnit){
+			$group = Less_Tree_UnitConversions::${$groupName};
+
+			//numerator
+			foreach($unit->numerator as $i => $atomicUnit){
+				$atomicUnit = $unit->numerator[$i];
+				if( !isset($group[$atomicUnit]) ){
+					continue;
+				}
+
+				$value = $value * ($group[$atomicUnit] / $group[$targetUnit]);
+
+				$unit->numerator[$i] = $targetUnit;
+			}
+
+			//denominator
+			foreach($unit->denominator as $i => $atomicUnit){
+				$atomicUnit = $unit->denominator[$i];
+				if( !isset($group[$atomicUnit]) ){
+					continue;
+				}
+
+				$value = $value / ($group[$atomicUnit] / $group[$targetUnit]);
+
+				$unit->denominator[$i] = $targetUnit;
+			}
+		}
+
+		$unit->cancel();
+
+		return new Less_Tree_Dimension( $value, $unit);
+    }
+}