GrumPHP\Task\AbstractLinterTask::lint PHP Method

    protected function lint(FilesCollection $files)
    {
        $this->guardLinterIsInstalled();
        // Skip ignored patterns:
        $configuration = $this->getConfiguration();
        foreach ($configuration['ignore_patterns'] as $pattern) {
            $files = $files->notPath($pattern);
        }
        // Lint every file:
        $lintErrors = new LintErrorsCollection();
        foreach ($files as $file) {
            foreach ($this->linter->lint($file) as $error) {
                $lintErrors->add($error);
            }
        }
        return $lintErrors;
    }