update less.php to PHP 7.x compatible fork

1 files changed, 241 insertions, 0 deletions

diff --git a/lib/less.php/Tree/Mixin/Definition.php b/lib/less.php/Tree/Mixin/Definition.php
new file mode 100644
index 0000000..b16d688
--- /dev/null
+++ b/lib/less.php/Tree/Mixin/Definition.php
@@ -0,0 +1,241 @@
+<?php
+
+class Less_Tree_Mixin_Definition extends Less_Tree_Ruleset{
+	public $name;
+	public $selectors;
+	public $params;
+	public $arity		= 0;
+	public $rules;
+	public $lookups		= array();
+	public $required	= 0;
+	public $frames		= array();
+	public $condition;
+	public $variadic;
+	public $type		= 'MixinDefinition';
+
+
+	// less.js : /lib/less/tree/mixin.js : tree.mixin.Definition
+	public function __construct($name, $params, $rules, $condition, $variadic = false, $frames = array() ){
+		$this->name = $name;
+		$this->selectors = array(new Less_Tree_Selector(array( new Less_Tree_Element(null, $name))));
+
+		$this->params = $params;
+		$this->condition = $condition;
+		$this->variadic = $variadic;
+		$this->rules = $rules;
+
+		if( $params ){
+			$this->arity = count($params);
+			foreach( $params as $p ){
+				if (! isset($p['name']) || ($p['name'] && !isset($p['value']))) {
+					$this->required++;
+				}
+			}
+		}
+
+		$this->frames = $frames;
+		$this->SetRulesetIndex();
+	}
+
+
+
+	//function accept( $visitor ){
+	//	$this->params = $visitor->visit($this->params);
+	//	$this->rules = $visitor->visit($this->rules);
+	//	$this->condition = $visitor->visit($this->condition);
+	//}
+
+
+	public function toCSS(){
+		return '';
+	}
+
+	// less.js : /lib/less/tree/mixin.js : tree.mixin.Definition.evalParams
+	public function compileParams($env, $mixinFrames, $args = array() , &$evaldArguments = array() ){
+		$frame = new Less_Tree_Ruleset(null, array());
+		$params = $this->params;
+		$mixinEnv = null;
+		$argsLength = 0;
+
+		if( $args ){
+			$argsLength = count($args);
+			for($i = 0; $i < $argsLength; $i++ ){
+				$arg = $args[$i];
+
+				if( $arg && $arg['name'] ){
+					$isNamedFound = false;
+
+					foreach($params as $j => $param){
+						if( !isset($evaldArguments[$j]) && $arg['name'] === $params[$j]['name']) {
+							$evaldArguments[$j] = $arg['value']->compile($env);
+							array_unshift($frame->rules, new Less_Tree_Rule( $arg['name'], $arg['value']->compile($env) ) );
+							$isNamedFound = true;
+							break;
+						}
+					}
+					if ($isNamedFound) {
+						array_splice($args, $i, 1);
+						$i--;
+						$argsLength--;
+						continue;
+					} else {
+						throw new Less_Exception_Compiler("Named argument for " . $this->name .' '.$args[$i]['name'] . ' not found');
+					}
+				}
+			}
+		}
+
+		$argIndex = 0;
+		foreach($params as $i => $param){
+
+			if ( isset($evaldArguments[$i]) ){ continue; }
+
+			$arg = null;
+			if( isset($args[$argIndex]) ){
+				$arg = $args[$argIndex];
+			}
+
+			if (isset($param['name']) && $param['name']) {
+
+				if( isset($param['variadic']) ){
+					$varargs = array();
+					for ($j = $argIndex; $j < $argsLength; $j++) {
+						$varargs[] = $args[$j]['value']->compile($env);
+					}
+					$expression = new Less_Tree_Expression($varargs);
+					array_unshift($frame->rules, new Less_Tree_Rule($param['name'], $expression->compile($env)));
+				}else{
+					$val = ($arg && $arg['value']) ? $arg['value'] : false;
+
+					if ($val) {
+						$val = $val->compile($env);
+					} else if ( isset($param['value']) ) {
+
+						if( !$mixinEnv ){
+							$mixinEnv = new Less_Environment();
+							$mixinEnv->frames = array_merge( array($frame), $mixinFrames);
+						}
+
+						$val = $param['value']->compile($mixinEnv);
+						$frame->resetCache();
+					} else {
+						throw new Less_Exception_Compiler("Wrong number of arguments for " . $this->name . " (" . $argsLength . ' for ' . $this->arity . ")");
+					}
+
+					array_unshift($frame->rules, new Less_Tree_Rule($param['name'], $val));
+					$evaldArguments[$i] = $val;
+				}
+			}
+
+			if ( isset($param['variadic']) && $args) {
+				for ($j = $argIndex; $j < $argsLength; $j++) {
+					$evaldArguments[$j] = $args[$j]['value']->compile($env);
+				}
+			}
+			$argIndex++;
+		}
+
+		ksort($evaldArguments);
+		$evaldArguments = array_values($evaldArguments);
+
+		return $frame;
+	}
+
+	public function compile($env) {
+		if( $this->frames ){
+			return new Less_Tree_Mixin_Definition($this->name, $this->params, $this->rules, $this->condition, $this->variadic, $this->frames );
+		}
+		return new Less_Tree_Mixin_Definition($this->name, $this->params, $this->rules, $this->condition, $this->variadic, $env->frames );
+	}
+
+	public function evalCall($env, $args = NULL, $important = NULL) {
+
+		Less_Environment::$mixin_stack++;
+
+		$_arguments = array();
+
+		if( $this->frames ){
+			$mixinFrames = array_merge($this->frames, $env->frames);
+		}else{
+			$mixinFrames = $env->frames;
+		}
+
+		$frame = $this->compileParams($env, $mixinFrames, $args, $_arguments);
+
+		$ex = new Less_Tree_Expression($_arguments);
+		array_unshift($frame->rules, new Less_Tree_Rule('@arguments', $ex->compile($env)));
+
+
+		$ruleset = new Less_Tree_Ruleset(null, $this->rules);
+		$ruleset->originalRuleset = $this->ruleset_id;
+
+
+		$ruleSetEnv = new Less_Environment();
+		$ruleSetEnv->frames = array_merge( array($this, $frame), $mixinFrames );
+		$ruleset = $ruleset->compile( $ruleSetEnv );
+
+		if( $important ){
+			$ruleset = $ruleset->makeImportant();
+		}
+
+		Less_Environment::$mixin_stack--;
+
+		return $ruleset;
+	}
+
+
+	public function matchCondition($args, $env) {
+
+		if( !$this->condition ){
+			return true;
+		}
+
+		// set array to prevent error on array_merge
+		if(!is_array($this->frames)) {
+             $this->frames = array();
+        }
+
+		$frame = $this->compileParams($env, array_merge($this->frames,$env->frames), $args );
+
+		$compile_env = new Less_Environment();
+		$compile_env->frames = array_merge(
+				array($frame)		// the parameter variables
+				, $this->frames		// the parent namespace/mixin frames
+				, $env->frames		// the current environment frames
+			);
+
+		$compile_env->functions = $env->functions;
+
+		return (bool)$this->condition->compile($compile_env);
+	}
+
+	public function matchArgs($args, $env = NULL){
+		$argsLength = count($args);
+
+		if( !$this->variadic ){
+			if( $argsLength < $this->required ){
+				return false;
+			}
+			if( $argsLength > count($this->params) ){
+				return false;
+			}
+		}else{
+			if( $argsLength < ($this->required - 1)){
+				return false;
+			}
+		}
+
+		$len = min($argsLength, $this->arity);
+
+		for( $i = 0; $i < $len; $i++ ){
+			if( !isset($this->params[$i]['name']) && !isset($this->params[$i]['variadic']) ){
+				if( $args[$i]['value']->compile($env)->toCSS() != $this->params[$i]['value']->compile($env)->toCSS() ){
+					return false;
+				}
+			}
+		}
+
+		return true;
+	}
+
+}