class SassForNode in Sassy 7.3
Same name and namespace in other branches
- 7 phamlp/sass/tree/SassForNode.php \SassForNode
SassForNode class. Represents a Sass @for loop. @package PHamlP @subpackage Sass.tree
Hierarchy
- class \SassNode
- class \SassForNode
Expanded class hierarchy of SassForNode
File
- phpsass/
tree/ SassForNode.php, line 28
View source
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 @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:: |
private | property | ||
SassForNode:: |
private | property | ||
SassForNode:: |
private | property | changes on each iteration | |
SassForNode:: |
private | property | ||
SassForNode:: |
private | property | ||
SassForNode:: |
constant | |||
SassForNode:: |
constant | |||
SassForNode:: |
constant | |||
SassForNode:: |
constant | |||
SassForNode:: |
public | function | Parse this node. | |
SassForNode:: |
constant | |||
SassForNode:: |
constant | |||
SassForNode:: |
constant | |||
SassForNode:: |
public | function |
SassForNode constructor. Overrides SassNode:: |
|
SassNode:: |
public | property | ||
SassNode:: |
public | property | 1 | |
SassNode:: |
public | property | ||
SassNode:: |
public | property | ||
SassNode:: |
public | function | Adds a child to this node. | |
SassNode:: |
public | function | Adds a warning to the node. | |
SassNode:: |
public | function | Evaluates a SassScript expression. | |
SassNode:: |
public | function | Returns the node's children | |
SassNode:: |
public | function | Returns the debug_info option setting for this node | |
SassNode:: |
public | function | Returns the filename for this node | |
SassNode:: |
public | function | Returns the last child node of this node. | |
SassNode:: |
public | function | Returns the level of this node. | |
SassNode:: |
public | function | Returns the line number for this node | |
SassNode:: |
public | function | Returns the line_numbers option setting for this node | |
SassNode:: |
public | function | Returns the node's parent | |
SassNode:: |
public | function | Returns the Sass parser. | |
SassNode:: |
public | function | Returns the property syntax being used. | |
SassNode:: |
public | function | Returns the renderer. | |
SassNode:: |
public | function | Returns the SassScript parser. | |
SassNode:: |
public | function | Returns the source for this node | |
SassNode:: |
public | function | Returns the render style of the document tree. | |
SassNode:: |
public | function | Returns vendor specific properties | |
SassNode:: |
public | function | Returns a value indicating if this node has children | |
SassNode:: |
public | function | Return a value indicating if this node has a parent | |
SassNode:: |
public | function | Returns a value indicating whether this node is in a directive | |
SassNode:: |
public | function | Returns a value indicating whether this node is in a SassScript directive | |
SassNode:: |
public | function | Replace interpolated SassScript contained in '#{}' with the parsed value. | |
SassNode:: |
public static | function | Returns a value indicating if the token represents this type of node. | 9 |
SassNode:: |
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:: |
public | function | Parse the children of the node. | |
SassNode:: |
public | function | Resets children when cloned | |
SassNode:: |
public | function | Getter. | |
SassNode:: |
public | function | Setter. |