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