class SassWhileNode in Sassy 7.3

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

Hierarchy

• class \SassNode
  • class \SassWhileNode

File

phpsass/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::$children	public	property
SassNode::$parent	public	property		1
SassNode::$root	public	property
SassNode::$token	public	property
SassNode::addChild	public	function	Adds a child to this node.
SassNode::addWarning	public	function	Adds a warning to the node.
SassNode::evaluate	public	function	Evaluates a SassScript expression.
SassNode::getChildren	public	function	Returns the node's children
SassNode::getDebug_info	public	function	Returns the debug_info option setting for this node
SassNode::getFilename	public	function	Returns the filename for this node
SassNode::getLastChild	public	function	Returns the last child node of this node.
SassNode::getLevel	public	function	Returns the level of this node.
SassNode::getLine	public	function	Returns the line number for this node
SassNode::getLine_numbers	public	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	public	function	Returns the source for this node
SassNode::getStyle	public	function	Returns the render style of the document tree.
SassNode::getVendor_properties	public	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	public	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.	9
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	public	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