Represents a CSS directive.
/**
* Parse this node.
* This raises an error.
* @return array An empty array
*/
public function parse($context)
{
// If we are in a loop, function or mixin then the parent isn't what should
// go inside the media node. Walk up the parent tree to find the rule node
// to put inside the media node or the root node if the media node should be
// at the root.
$parent = $this->parent;
while (!$parent instanceof SassRuleNode && !$parent instanceof SassRootNode) {
$parent = $parent->parent;
}
// Make a copy of the token before parsing in case we are in a loop and it contains variables
$token = clone $this->token;
$token->source = SassDirectiveNode::interpolate_nonstrict($token->source, $context);
$node = new SassRuleNode($token, $context);
$node->root = $parent->root;
$rule = clone $parent;
$rule->root = $node->root;
$rule->children = $this->children;
$try = $rule->parse($context);
if (is_array($try)) {
$rule->children = $try;
}
// Tests were failing with this, but I'm not sure if we cover every case.
//else if (is_object($try) && method_exists($try, 'render')) {
// $rule = $try;
//}
$node->children = array(new SassString($rule->render($context)));
return array($node);
}
/**
* Parse this node.
* This raises an error.
* @return array An empty array
*/
public function parse($context)
{
$this->token->source = SassDirectiveNode::interpolate_nonstrict($this->token->source, $context);
$node = new SassRuleNode($this->token, $context);
$node->root = $this->parent->root;
$rule = clone $this->parent;
$rule->root = $node->root;
$rule->children = $this->children;
$try = $rule->parse($context);
if (is_array($try)) {
$rule->children = $try;
}
// Tests were failing with this, but I'm not sure if we cover every case.
//else if (is_object($try) && method_exists($try, 'render')) {
// $rule = $try;
//}
$node->children = array(new SassString($rule->render($context)));
return array($node);
}
/**
* Parses a directive
* @param SassToken token to parse
* @param SassNode parent node
* @return SassNode a Sass directive node
*/
public function parseDirective($token, $parent)
{
switch (SassDirectiveNode::extractDirective($token)) {
case '@content':
return new SassContentNode($token);
break;
case '@extend':
return new SassExtendNode($token);
break;
case '@function':
return new SassFunctionDefinitionNode($token);
break;
case '@return':
return new SassReturnNode($token);
break;
case '@media':
return new SassMediaNode($token);
break;
case '@mixin':
return new SassMixinDefinitionNode($token);
break;
case '@include':
return new SassMixinNode($token);
break;
case '@import':
if ($this->syntax == SassFile::SASS) {
$i = 0;
$source = '';
while (sizeof($this->source) > $i && empty($source) && isset($this->source[$i + 1])) {
$source = $this->source[$i++];
}
if (!empty($source) && $this->getLevel($source) > $token->level) {
if ($this->debug) {
throw new SassException('Nesting not allowed beneath @import directive', $token);
}
}
}
return new SassImportNode($token, $parent);
break;
case '@each':
return new SassEachNode($token);
break;
case '@for':
return new SassForNode($token);
break;
case '@if':
return new SassIfNode($token);
break;
case '@else':
// handles else and else if directives
return new SassElseNode($token);
break;
case '@do':
case '@while':
return new SassWhileNode($token);
break;
case '@warn':
return new SassWarnNode($token);
break;
case '@debug':
return new SassDebugNode($token);
break;
default:
return new SassDirectiveNode($token);
break;
}
}
/**
* Parses a directive
* @param SassToken token to parse
* @param SassNode parent node
* @return SassNode a Sass directive node
*/
private function parseDirective($token, $parent)
{
switch (SassDirectiveNode::extractDirective($token)) {
case '@extend':
return new SassExtendNode($token);
break;
case '@mixin':
return new SassMixinDefinitionNode($token);
break;
case '@include':
return new SassMixinNode($token);
break;
case '@import':
if ($this->syntax == SassFile::SASS) {
$i = 0;
$source = '';
while (!empty($this->source) && empty($source)) {
$source = $this->source[$i++];
}
if (!empty($source) && $this->getLevel($source) > $token->level) {
throw new SassException('Nesting not allowed beneath {what}', array('{what}' => '@import directive'), $token);
}
}
return new SassImportNode($token);
break;
case '@for':
return new SassForNode($token);
break;
case '@if':
return new SassIfNode($token);
break;
case '@else':
// handles else and else if directives
return new SassElseNode($token);
break;
case '@do':
case '@while':
return new SassWhileNode($token);
break;
case '@debug':
return new SassDebugNode($token);
break;
case '@warn':
return new SassDebugNode($token, true);
break;
default:
return new SassDirectiveNode($token);
break;
}
}
/**
* Parse a line and its children.
* @param array line to parse
* @param array remaining lines
* @param SassNode parent node
* @return SassNode a SassNode of the appropriate type
*/
private function parseLine($line, &$lines, $parent)
{
if (empty($line)) {
return null;
}
switch (true) {
case SassCommentNode::isa($line):
return $this->parseComment($line, $lines);
break;
case SassDirectiveNode::isa($line):
return $this->parseDirective($line, $lines, $parent);
break;
case SassMixinDefinitionNode::isa($line):
return $this->parseMixinDefinition($line);
break;
case SassMixinNode::isa($line):
return $this->parseMixin($line);
break;
case SassVariableNode::isa($line):
if ($this->hasChild($line, $Lines)) {
throw new SassException("Illegal nesting. Nesting not allowed beneath variables.\nLine {$line['number']}: " . (is_array($line['file']) ? join(DIRECTORY_SEPARATOR, $line['file']) : ''));
}
return $this->parseVariable($line);
break;
case SassPropertyNode::isa($line, $this->options['property_syntax']):
return $this->parseProperty($line);
break;
default:
return $this->parseRule($line, $lines);
break;
}
// switch
}
