SassMixinNode.php in Sassy 7

File

phamlp/sass/tree/SassMixinNode.php

<?php

/* SVN FILE: $Id$ */

/**
 * SassMixinNode class file.
 * @author			Chris Yates <[e-mail]>
 * @copyright 	Copyright (c) 2010 PBM Web Development
 * @license			http://phamlp.googlecode.com/files/license.txt
 * @package			PHamlP
 * @subpackage	Sass.tree
 */

/**
 * SassMixinNode class.
 * Represents a Mixin.
 * @package			PHamlP
 * @subpackage	Sass.tree
 */
class SassMixinNode extends SassNode {
  const NODE_IDENTIFIER = '+';
  const MATCH = '/^(\\+|@include\\s+)([-\\w]+)\\s*(?:\\((.*?)\\))?$/i';
  const IDENTIFIER = 1;
  const NAME = 2;
  const ARGS = 3;

  /**
   * @var string name of the mixin
   */
  private $name;

  /**
   * @var array arguments for the mixin
   */
  private $args = array();

  /**
   * SassMixinDefinitionNode constructor.
   * @param object source token
   * @return SassMixinNode
   */
  public function __construct($token) {
    parent::__construct($token);
    preg_match(self::MATCH, $token->source, $matches);
    $this->name = $matches[self::NAME];
    if (isset($matches[self::ARGS])) {
      $this->args = SassScriptFunction::extractArgs($matches[self::ARGS]);
    }
  }

  /**
   * Parse this node.
   * Set passed arguments and any optional arguments not passed to their
   * defaults, then render the children of the mixin definition.
   * @param SassContext the context in which this node is parsed
   * @return array the parsed node
   */
  public function parse($pcontext) {
    $mixin = $pcontext
      ->getMixin($this->name);
    $context = new SassContext($pcontext);
    $argc = count($this->args);
    $count = 0;
    foreach ($mixin->args as $name => $value) {
      if ($count < $argc) {
        $context
          ->setVariable($name, $this
          ->evaluate($this->args[$count++], $context));
      }
      elseif (!is_null($value)) {
        $context
          ->setVariable($name, $this
          ->evaluate($value, $context));
      }
      else {
        throw new SassMixinNodeException("Mixin::{mname}: Required variable ({vname}) not given.\nMixin defined: {dfile}::{dline}\nMixin used", array(
          '{vname}' => $name,
          '{mname}' => $this->name,
          '{dfile}' => $mixin->token->filename,
          '{dline}' => $mixin->token->line,
        ), $this);
      }
    }

    // foreach
    $children = array();
    foreach ($mixin->children as $child) {
      $child->parent = $this;
      $children = array_merge($children, $child
        ->parse($context));
    }

    // foreach

    //$context->merge();
    return $children;
  }

  /**
   * Returns a value indicating if the token represents this type of node.
   * @param object token
   * @return boolean true if the token represents this type of node, false if not
   */
  public static function isa($token) {
    return $token->source[0] === self::NODE_IDENTIFIER;
  }

}

Classes

Name	Description
SassMixinNode	SassMixinNode class. Represents a Mixin. @package PHamlP @subpackage Sass.tree