/**
* Converts the ruleset to CSS.
*
* @param RulesetNode $ruleset
* @param array $variables
*
* @return string The generated CSS code
*
* @throws
*/
protected function toCSS(RulesetNode $ruleset, array $variables)
{
$precision = ini_set('precision', 16);
$locale = setlocale(LC_NUMERIC, 0);
setlocale(LC_NUMERIC, 'C');
if (extension_loaded('xdebug')) {
$level = ini_set('xdebug.max_nesting_level', PHP_INT_MAX);
}
$e = $css = null;
try {
$this->prepareVariables($this->context, $variables);
// pre compilation visitors
foreach ($this->getPreCompileVisitors() as $visitor) {
/* @var $visitor Visitor */
$visitor->run($ruleset);
}
// compile the ruleset
$compiled = $ruleset->compile($this->context);
// post compilation visitors
foreach ($this->getPostCompileVisitors() as $visitor) {
/* @var $visitor Visitor */
$visitor->run($compiled);
}
$context = $this->getContext();
$context->numPrecision = 8;
// less.js compatibility
if ($context->sourceMap) {
$generator = new Generator($compiled, $this->context->getContentsMap(), $this->context->sourceMapOptions);
// will also save file
$css = $generator->generateCSS($this->context);
} else {
$generator = null;
$css = $compiled->toCSS($this->context);
}
if ($this->pluginManager) {
// post process
$postProcessors = $this->pluginManager->getPostProcessors();
foreach ($postProcessors as $postProcessor) {
/* @var $postProcessor PostProcessorInterface */
$css = $postProcessor->process($css, ['context' => $this->context, 'source_map' => $generator, 'importer' => $this->importer]);
}
}
if ($this->context->compress) {
$css = preg_replace('/(^(\\s)+)|((\\s)+$)/', '', $css);
}
} catch (\Exception $e) {
}
// restore
setlocale(LC_NUMERIC, $locale);
ini_set('precision', $precision);
if (extension_loaded('xdebug')) {
ini_set('xdebug.max_nesting_level', $level);
}
if ($e) {
throw $e;
}
return $css;
}
