public function testPreprocessors()
{
$m = new PluginManager($this->getParserMock());
$r = $m->addPreProcessor($preprocessor1 = new myTestPreProcessor('first'));
$this->assertInstanceOf('ILess\\PluginManager', $r, 'fluent interface works');
$preprocessors = $m->getPreProcessors();
$this->assertEquals([$preprocessor1], $preprocessors, 'getPreProcessors returns an array of preprocessors');
// add second but with higher priority
$m->addPreProcessor($preprocessor2 = new myTestPreProcessor('second'), 200);
$preprocessors = $m->getPreProcessors();
$this->assertEquals([$preprocessor2, $preprocessor1], $preprocessors, 'getPreProcessors returns an array of preprocessors');
}
/**
* Parse a Less string into nodes.
*
* @param string $string The string to parse
*
* @return array
*
* @throws ParserException If there was an error in parsing the string
*/
protected function parse($string)
{
$string = Util::normalizeString($string);
if ($this->pluginManager) {
$preProcessors = $this->pluginManager->getPreProcessors();
foreach ($preProcessors as $preProcessor) {
/* @var $preProcessor PreProcessorInterface */
$string = $preProcessor->process($string, ['context' => $this->context, 'file_info' => $this->context->currentFileInfo, 'importer' => $this->importer]);
}
}
$this->input = new ParserInput();
$this->input->start($string);
$rules = $this->parsePrimary();
$endInfo = $this->input->end();
$error = null;
if (!$endInfo->isFinished) {
$message = $endInfo->furthestPossibleErrorMessage;
if (!$message) {
$message = 'Unrecognised input';
if ($endInfo->furthestChar === '}') {
$message .= '. Possibly missing opening \'{\'';
} elseif ($endInfo->furthestChar === ')') {
$message .= '. Possibly missing opening \'(\'';
} elseif ($endInfo->furthestReachedEnd) {
$message .= '. Possibly missing something';
}
}
$error = new ParserException($message, $endInfo->furthest, $this->context->currentFileInfo);
}
if ($error) {
throw $error;
}
return $rules;
}
