class SassIfNode in Sassy 7
Same name and namespace in other branches
- 7.3 phpsass/tree/SassIfNode.php \SassIfNode
SassIfNode class. Represents Sass If, Else If and Else statements. Else If and Else statement nodes are chained below the If statement node. @package PHamlP @subpackage Sass.tree
Hierarchy
- class \SassNode
- class \SassIfNode
Expanded class hierarchy of SassIfNode
File
- phamlp/
sass/ tree/ SassIfNode.php, line 19
View source
class SassIfNode extends SassNode {
const MATCH_IF = '/^@if\\s+(.+)$/i';
const MATCH_ELSE = '/@else(\\s+if\\s+(.+))?/i';
const IF_EXPRESSION = 1;
const ELSE_IF = 1;
const ELSE_EXPRESSION = 2;
/**
* @var SassIfNode the next else node.
*/
private $else;
/**
* @var string expression to evaluate
*/
private $expression;
/**
* SassIfNode constructor.
* @param object source token
* @param boolean true for an "if" node, false for an "else if | else" node
* @return SassIfNode
*/
public function __construct($token, $if = true) {
parent::__construct($token);
if ($if) {
preg_match(self::MATCH_IF, $token->source, $matches);
$this->expression = $matches[SassIfNode::IF_EXPRESSION];
}
else {
preg_match(self::MATCH_ELSE, $token->source, $matches);
$this->expression = sizeof($matches) == 1 ? null : $matches[SassIfNode::ELSE_EXPRESSION];
}
}
/**
* Adds an "else" statement to this node.
* @param SassIfNode "else" statement node to add
* @return SassIfNode this node
*/
public function addElse($node) {
if (is_null($this->else)) {
$node->parent = $this;
$node->root = $this->root;
$this->else = $node;
}
else {
$this->else
->addElse($node);
}
return $this;
}
/**
* Parse this node.
* @param SassContext the context in which this node is parsed
* @return array parsed child nodes
*/
public function parse($context) {
if ($this
->isElse() || $this
->evaluate($this->expression, $context)
->toBoolean()) {
$children = $this
->parseChildren($context);
}
elseif (!empty($this->else)) {
$children = $this->else
->parse($context);
}
else {
$children = array();
}
return $children;
}
/**
* Returns a value indicating if this node is an "else" node.
* @return true if this node is an "else" node, false if this node is an "if"
* or "else if" node
*/
private function isElse() {
return $this->expression == '';
}
}
Members
Name | Modifiers | Type | Description | Overrides |
---|---|---|---|---|
SassIfNode:: |
private | property | * | |
SassIfNode:: |
private | property | * | |
SassIfNode:: |
public | function | * Adds an "else" statement to this node. * | |
SassIfNode:: |
constant | |||
SassIfNode:: |
constant | |||
SassIfNode:: |
constant | |||
SassIfNode:: |
private | function | * Returns a value indicating if this node is an "else" node. * | |
SassIfNode:: |
constant | |||
SassIfNode:: |
constant | |||
SassIfNode:: |
public | function | * Parse this node. * | |
SassIfNode:: |
public | function |
* SassIfNode constructor.
* Overrides SassNode:: |
1 |
SassNode:: |
protected | property | * | |
SassNode:: |
protected | property | * | |
SassNode:: |
protected | property | * | |
SassNode:: |
protected | property | * | |
SassNode:: |
public | function | * Adds a child to this node. * | |
SassNode:: |
public | function | * Adds a warning to the node. * | |
SassNode:: |
protected | function | * Evaluates a SassScript expression. * | |
SassNode:: |
public | function | * Returns the node's children * | |
SassNode:: |
private | function | * Returns the debug_info option setting for this node * | |
SassNode:: |
private | function | * Returns the filename for this node * | |
SassNode:: |
public | function | * Returns the last child node of this node. * | |
SassNode:: |
private | function | * Returns the level of this node. * | |
SassNode:: |
private | function | * Returns the line number for this node * | |
SassNode:: |
private | 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:: |
private | function | * Returns the source for this node * | |
SassNode:: |
public | function | * Returns the render style of the document tree. * | |
SassNode:: |
private | 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:: |
protected | 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. * | 7 |
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:: |
protected | function | * Parse the children of the node. * | |
SassNode:: |
public | function | * Resets children when cloned * | |
SassNode:: |
public | function | * Getter. * | |
SassNode:: |
public | function | * Setter. * |