--- /dev/null
+<?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;
+ }
+
+}
+
+
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