class SassForNode in Sassy 7

SassForNode class. Represents a Sass @for loop. @package PHamlP @subpackage Sass.tree

Hierarchy

• class \SassNode
  • class \SassForNode

File

phamlp/sass/tree/SassForNode.php, line 28

class SassForNode extends SassNode {
  const MATCH = '/@for\\s+[!\\$](\\w+)\\s+from\\s+(.+?)\\s+(through|to)\\s+(.+?)(?:\\s+step\\s+(.+))?$/i';
  const VARIABLE = 1;
  const FROM = 2;
  const INCLUSIVE = 3;
  const TO = 4;
  const STEP = 5;
  const IS_INCLUSIVE = 'through';

  /**
   * @var string variable name for the loop
   */
  private $variable;

  /**
   * @var string expression that provides the loop start value
   */
  private $from;

  /**
   * @var string expression that provides the loop end value
   */
  private $to;

  /**
   * @var boolean whether the loop end value is inclusive
   */
  private $inclusive;

  /**
   * @var string expression that provides the amount by which the loop variable
   * changes on each iteration
   */
  private $step;

  /**
   * SassForNode constructor.
   * @param object source token
   * @return SassForNode
   */
  public function __construct($token) {
    parent::__construct($token);
    if (!preg_match(self::MATCH, $token->source, $matches)) {
      throw new SassForNodeException('Invalid {what}', array(
        '{what}' => '@for directive',
      ), $this);
    }
    $this->variable = $matches[self::VARIABLE];
    $this->from = $matches[self::FROM];
    $this->to = $matches[self::TO];
    $this->inclusive = $matches[self::INCLUSIVE] === SassForNode::IS_INCLUSIVE;
    $this->step = empty($matches[self::STEP]) ? 1 : $matches[self::STEP];
  }

  /**
   * Parse this node.
   * @param SassContext the context in which this node is parsed
   * @return array parsed child nodes
   */
  public function parse($context) {
    $children = array();
    $from = (double) $this
      ->evaluate($this->from, $context)->value;
    $to = (double) $this
      ->evaluate($this->to, $context)->value;
    $step = (double) $this
      ->evaluate($this->step, $context)->value * ($to > $from ? 1 : -1);
    if ($this->inclusive) {
      $to += $from < $to ? 1 : -1;
    }
    $context = new SassContext($context);
    for ($i = $from; $from < $to ? $i < $to : $i > $to; $i = $i + $step) {
      $context
        ->setVariable($this->variable, new SassNumber($i));
      $children = array_merge($children, $this
        ->parseChildren($context));
    }
    return $children;
  }

}

Members

Name	Modifiers	Type	Description	Overrides
SassForNode::$from	private	property	*
SassForNode::$inclusive	private	property	*
SassForNode::$step	private	property	* * changes on each iteration
SassForNode::$to	private	property	*
SassForNode::$variable	private	property	*
SassForNode::FROM		constant
SassForNode::INCLUSIVE		constant
SassForNode::IS_INCLUSIVE		constant
SassForNode::MATCH		constant
SassForNode::parse	public	function	* Parse this node. *
SassForNode::STEP		constant
SassForNode::TO		constant
SassForNode::VARIABLE		constant
SassForNode::__construct	public	function	* SassForNode constructor. * Overrides SassNode::__construct
SassNode::$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. *