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-rw-r--r--lib/less.php/Tree/Call.php121
1 files changed, 121 insertions, 0 deletions
diff --git a/lib/less.php/Tree/Call.php b/lib/less.php/Tree/Call.php
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+<?php
+
+
+/**
+ * Call
+ *
+ * @package Less
+ * @subpackage tree
+ */
+class Less_Tree_Call extends Less_Tree{
+ public $value;
+
+ public $name;
+ public $args;
+ public $index;
+ public $currentFileInfo;
+ public $type = 'Call';
+
+ public function __construct($name, $args, $index, $currentFileInfo = null ){
+ $this->name = $name;
+ $this->args = $args;
+ $this->index = $index;
+ $this->currentFileInfo = $currentFileInfo;
+ }
+
+ public function accept( $visitor ){
+ $this->args = $visitor->visitArray( $this->args );
+ }
+
+ //
+ // When evaluating a function call,
+ // we either find the function in `tree.functions` [1],
+ // in which case we call it, passing the evaluated arguments,
+ // or we simply print it out as it appeared originally [2].
+ //
+ // The *functions.js* file contains the built-in functions.
+ //
+ // The reason why we evaluate the arguments, is in the case where
+ // we try to pass a variable to a function, like: `saturate(@color)`.
+ // The function should receive the value, not the variable.
+ //
+ public function compile($env=null){
+ $args = array();
+ foreach($this->args as $a){
+ $args[] = $a->compile($env);
+ }
+
+ $nameLC = strtolower($this->name);
+ switch($nameLC){
+ case '%':
+ $nameLC = '_percent';
+ break;
+
+ case 'get-unit':
+ $nameLC = 'getunit';
+ break;
+
+ case 'data-uri':
+ $nameLC = 'datauri';
+ break;
+
+ case 'svg-gradient':
+ $nameLC = 'svggradient';
+ break;
+ }
+
+ $result = null;
+ if( $nameLC === 'default' ){
+ $result = Less_Tree_DefaultFunc::compile();
+
+ }else{
+
+ if( method_exists('Less_Functions',$nameLC) ){ // 1.
+ try {
+
+ $func = new Less_Functions($env, $this->currentFileInfo);
+ $result = call_user_func_array( array($func,$nameLC),$args);
+
+ } catch (Exception $e) {
+ throw new Less_Exception_Compiler('error evaluating function `' . $this->name . '` '.$e->getMessage().' index: '. $this->index);
+ }
+ } elseif( isset( $env->functions[$nameLC] ) && is_callable( $env->functions[$nameLC] ) ) {
+ try {
+ $result = call_user_func_array( $env->functions[$nameLC], $args );
+ } catch (Exception $e) {
+ throw new Less_Exception_Compiler('error evaluating function `' . $this->name . '` '.$e->getMessage().' index: '. $this->index);
+ }
+ }
+ }
+
+ if( $result !== null ){
+ return $result;
+ }
+
+
+ return new Less_Tree_Call( $this->name, $args, $this->index, $this->currentFileInfo );
+ }
+
+ /**
+ * @see Less_Tree::genCSS
+ */
+ public function genCSS( $output ){
+
+ $output->add( $this->name . '(', $this->currentFileInfo, $this->index );
+ $args_len = count($this->args);
+ for($i = 0; $i < $args_len; $i++ ){
+ $this->args[$i]->genCSS( $output );
+ if( $i + 1 < $args_len ){
+ $output->add( ', ' );
+ }
+ }
+
+ $output->add( ')' );
+ }
+
+
+ //public function toCSS(){
+ // return $this->compile()->toCSS();
+ //}
+
+}