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Diffstat (limited to 'lib/less.php/Tree/Mixin/Call.php')
| -rw-r--r-- | lib/less.php/Tree/Mixin/Call.php | 202 |
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; + } + +} + + |