class SassWhileNode in Sassy 7

SassWhileNode class. Represents a Sass @while loop and a Sass @do loop. @package PHamlP @subpackage Sass.tree

Hierarchy

• class \SassNode
  • class \SassWhileNode

File

phamlp/sass/tree/SassWhileNode.php, line 18

class SassWhileNode extends SassNode {
  const MATCH = '/^@(do|while)\\s+(.+)$/i';
  const LOOP = 1;
  const EXPRESSION = 2;
  const IS_DO = 'do';

  /**
   * @var boolean whether this is a do/while.
   * A do/while loop is guarenteed to run at least once.
   */
  private $isDo;

  /**
   * @var string expression to evaluate
   */
  private $expression;

  /**
   * SassWhileNode constructor.
   * @param object source token
   * @return SassWhileNode
   */
  public function __construct($token) {
    parent::__construct($token);
    preg_match(self::MATCH, $token->source, $matches);
    $this->expression = $matches[self::EXPRESSION];
    $this->isDo = $matches[self::LOOP] === SassWhileNode::IS_DO;
  }

  /**
   * Parse this node.
   * @param SassContext the context in which this node is parsed
   * @return array the parsed child nodes
   */
  public function parse($context) {
    $children = array();
    if ($this->isDo) {
      do {
        $children = array_merge($children, $this
          ->parseChildren($context));
      } while ($this
        ->evaluate($this->expression, $context)
        ->toBoolean());
    }
    else {
      while ($this
        ->evaluate($this->expression, $context)
        ->toBoolean()) {
        $children = array_merge($children, $this
          ->parseChildren($context));
      }
    }
    return $children;
  }

}

Members

Name	Modifiers	Type	Description	Overrides
SassNode::$children	protected	property	*
SassNode::$parent	protected	property	*
SassNode::$root	protected	property	*
SassNode::$token	protected	property	*
SassNode::addChild	public	function	* Adds a child to this node. *
SassNode::addWarning	public	function	* Adds a warning to the node. *
SassNode::evaluate	protected	function	* Evaluates a SassScript expression. *
SassNode::getChildren	public	function	* Returns the node's children *
SassNode::getDebug_info	private	function	* Returns the debug_info option setting for this node *
SassNode::getFilename	private	function	* Returns the filename for this node *
SassNode::getLastChild	public	function	* Returns the last child node of this node. *
SassNode::getLevel	private	function	* Returns the level of this node. *
SassNode::getLine	private	function	* Returns the line number for this node *
SassNode::getLine_numbers	private	function	* Returns the line_numbers option setting for this node *
SassNode::getParent	public	function	* Returns the node's parent *
SassNode::getParser	public	function	* Returns the Sass parser. *
SassNode::getPropertySyntax	public	function	* Returns the property syntax being used. *
SassNode::getRenderer	public	function	* Returns the renderer. *
SassNode::getScript	public	function	* Returns the SassScript parser. *
SassNode::getSource	private	function	* Returns the source for this node *
SassNode::getStyle	public	function	* Returns the render style of the document tree. *
SassNode::getVendor_properties	private	function	* Returns vendor specific properties *
SassNode::hasChildren	public	function	* Returns a value indicating if this node has children *
SassNode::hasParent	public	function	* Return a value indicating if this node has a parent *
SassNode::inDirective	public	function	* Returns a value indicating whether this node is in a directive *
SassNode::inSassScriptDirective	public	function	* Returns a value indicating whether this node is in a SassScript directive *
SassNode::interpolate	protected	function	* Replace interpolated SassScript contained in '#{}' with the parsed value. *
SassNode::isa	public static	function	* Returns a value indicating if the token represents this type of node. *	7
SassNode::isChildOf	public	function	* Returns a value indicating if this node is a child of the passed node. * This just checks the levels of the nodes. If this node is at a greater * level than the passed node if is a child of it. *
SassNode::parseChildren	protected	function	* Parse the children of the node. *
SassNode::__clone	public	function	* Resets children when cloned *
SassNode::__get	public	function	* Getter. *
SassNode::__set	public	function	* Setter. *
SassWhileNode::$expression	private	property	*
SassWhileNode::$isDo	private	property	* * A do/while loop is guarenteed to run at least once.
SassWhileNode::EXPRESSION		constant
SassWhileNode::IS_DO		constant
SassWhileNode::LOOP		constant
SassWhileNode::MATCH		constant
SassWhileNode::parse	public	function	* Parse this node. *
SassWhileNode::__construct	public	function	* SassWhileNode constructor. * Overrides SassNode::__construct