update less.php to PHP 7.x compatible fork

1 files changed, 202 insertions, 0 deletions

diff --git a/lib/less.php/Tree/Mixin/Call.php b/lib/less.php/Tree/Mixin/Call.php
new file mode 100644
index 0000000..04eb426
--- /dev/null
+++ b/lib/less.php/Tree/Mixin/Call.php
@@ -0,0 +1,202 @@
+<?php
+
+
+class Less_Tree_Mixin_Call extends Less_Tree{
+
+	public $selector;
+	public $arguments;
+	public $index;
+	public $currentFileInfo;
+
+	public $important;
+	public $type = 'MixinCall';
+
+	/**
+	 * less.js: tree.mixin.Call
+	 *
+	 */
+	public function __construct($elements, $args, $index, $currentFileInfo, $important = false){
+		$this->selector = new Less_Tree_Selector($elements);
+		$this->arguments = $args;
+		$this->index = $index;
+		$this->currentFileInfo = $currentFileInfo;
+		$this->important = $important;
+	}
+
+	//function accept($visitor){
+	//	$this->selector = $visitor->visit($this->selector);
+	//	$this->arguments = $visitor->visit($this->arguments);
+	//}
+
+
+	public function compile($env){
+
+		$rules = array();
+		$match = false;
+		$isOneFound = false;
+		$candidates = array();
+		$defaultUsed = false;
+		$conditionResult = array();
+
+		$args = array();
+		foreach($this->arguments as $a){
+			$args[] = array('name'=> $a['name'], 'value' => $a['value']->compile($env) );
+		}
+
+		foreach($env->frames as $frame){
+
+			$mixins = $frame->find($this->selector);
+
+			if( !$mixins ){
+				continue;
+			}
+
+			$isOneFound = true;
+			$defNone = 0;
+			$defTrue = 1;
+			$defFalse = 2;
+
+			// To make `default()` function independent of definition order we have two "subpasses" here.
+			// At first we evaluate each guard *twice* (with `default() == true` and `default() == false`),
+			// and build candidate list with corresponding flags. Then, when we know all possible matches,
+			// we make a final decision.
+
+			$mixins_len = count($mixins);
+			for( $m = 0; $m < $mixins_len; $m++ ){
+				$mixin = $mixins[$m];
+
+				if( $this->IsRecursive( $env, $mixin ) ){
+					continue;
+				}
+
+				if( $mixin->matchArgs($args, $env) ){
+
+					$candidate = array('mixin' => $mixin, 'group' => $defNone);
+
+					if( $mixin instanceof Less_Tree_Ruleset ){
+
+						for( $f = 0; $f < 2; $f++ ){
+							Less_Tree_DefaultFunc::value($f);
+							$conditionResult[$f] = $mixin->matchCondition( $args, $env);
+						}
+						if( $conditionResult[0] || $conditionResult[1] ){
+							if( $conditionResult[0] != $conditionResult[1] ){
+								$candidate['group'] = $conditionResult[1] ? $defTrue : $defFalse;
+							}
+
+							$candidates[] = $candidate;
+						}
+					}else{
+						$candidates[] = $candidate;
+					}
+
+					$match = true;
+				}
+			}
+
+			Less_Tree_DefaultFunc::reset();
+
+
+			$count = array(0, 0, 0);
+			for( $m = 0; $m < count($candidates); $m++ ){
+				$count[ $candidates[$m]['group'] ]++;
+			}
+
+			if( $count[$defNone] > 0 ){
+				$defaultResult = $defFalse;
+			} else {
+				$defaultResult = $defTrue;
+				if( ($count[$defTrue] + $count[$defFalse]) > 1 ){
+					throw new Exception( 'Ambiguous use of `default()` found when matching for `' . $this->format($args) . '`' );
+				}
+			}
+
+
+			$candidates_length = count($candidates);
+			$length_1 = ($candidates_length == 1);
+
+			for( $m = 0; $m < $candidates_length; $m++){
+				$candidate = $candidates[$m]['group'];
+				if( ($candidate === $defNone) || ($candidate === $defaultResult) ){
+					try{
+						$mixin = $candidates[$m]['mixin'];
+						if( !($mixin instanceof Less_Tree_Mixin_Definition) ){
+							$mixin = new Less_Tree_Mixin_Definition('', array(), $mixin->rules, null, false);
+							$mixin->originalRuleset = $mixins[$m]->originalRuleset;
+						}
+						$rules = array_merge($rules, $mixin->evalCall($env, $args, $this->important)->rules);
+					} catch (Exception $e) {
+						//throw new Less_Exception_Compiler($e->getMessage(), $e->index, null, $this->currentFileInfo['filename']);
+						throw new Less_Exception_Compiler($e->getMessage(), null, null, $this->currentFileInfo);
+					}
+				}
+			}
+
+			if( $match ){
+				if( !$this->currentFileInfo || !isset($this->currentFileInfo['reference']) || !$this->currentFileInfo['reference'] ){
+					Less_Tree::ReferencedArray($rules);
+				}
+
+				return $rules;
+			}
+		}
+
+		if( $isOneFound ){
+			throw new Less_Exception_Compiler('No matching definition was found for `'.$this->Format( $args ).'`', null, $this->index, $this->currentFileInfo);
+
+		}else{
+			throw new Less_Exception_Compiler(trim($this->selector->toCSS()) . " is undefined in ".$this->currentFileInfo['filename'], null, $this->index);
+		}
+
+	}
+
+	/**
+	 * Format the args for use in exception messages
+	 *
+	 */
+	private function Format($args){
+		$message = array();
+		if( $args ){
+			foreach($args as $a){
+				$argValue = '';
+				if( $a['name'] ){
+					$argValue .= $a['name'] . ':';
+				}
+				if( is_object($a['value']) ){
+					$argValue .= $a['value']->toCSS();
+				}else{
+					$argValue .= '???';
+				}
+				$message[] = $argValue;
+			}
+		}
+		return implode(', ',$message);
+	}
+
+
+	/**
+	 * Are we in a recursive mixin call?
+	 *
+	 * @return bool
+	 */
+	private function IsRecursive( $env, $mixin ){
+
+		foreach($env->frames as $recur_frame){
+			if( !($mixin instanceof Less_Tree_Mixin_Definition) ){
+
+				if( $mixin === $recur_frame ){
+					return true;
+				}
+
+				if( isset($recur_frame->originalRuleset) && $mixin->ruleset_id === $recur_frame->originalRuleset ){
+					return true;
+				}
+			}
+		}
+
+		return false;
+	}
+
+}
+
+