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<?php |
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declare(strict_types=1); |
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namespace Remorhaz\UniLex\Console; |
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use ReflectionException; |
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use Remorhaz\UniLex\Exception; |
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use Remorhaz\UniLex\Lexer\TokenMatcherGenerator; |
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use Remorhaz\UniLex\Lexer\TokenMatcherSpec; |
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use Remorhaz\UniLex\Lexer\TokenMatcherSpecParser; |
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use RuntimeException; |
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use Symfony\Component\Console\Command\Command; |
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use Symfony\Component\Console\Exception\InvalidOptionException; |
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use Symfony\Component\Console\Input\InputArgument; |
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use Symfony\Component\Console\Input\InputInterface; |
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use Symfony\Component\Console\Input\InputOption; |
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use Symfony\Component\Console\Output\OutputInterface; |
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use function array_merge; |
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use function file_put_contents; |
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use function realpath; |
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use function strlen; |
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use function substr_count; |
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final class GenerateTokenMatcherCommand extends Command |
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{ |
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protected static $defaultName = 'generate-token-matcher'; |
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protected function configure() |
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{ |
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$this |
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->setDescription('Generates token matcher.') |
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->setHelp('Generates token matcher based on given specification.') |
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->addArgument('spec', InputArgument::REQUIRED, 'Specification file') |
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->addArgument('target', InputArgument::REQUIRED, 'Target file') |
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->addOption('desc', 'd', InputOption::VALUE_REQUIRED, 'Token matcher description'); |
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} |
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/** |
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* @param InputInterface $input |
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* @param OutputInterface $output |
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* @return int|void |
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* @throws ReflectionException |
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* @throws Exception |
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*/ |
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protected function execute(InputInterface $input, OutputInterface $output) |
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{ |
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$output->writeln("Generating token matcher..."); |
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$spec = $this->buildSpec($input, $output); |
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$content = $this->buildContent($output, $spec); |
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$this->buildTarget($input, $output, $content); |
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return 0; |
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} |
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/** |
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* @param InputInterface $input |
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* @param OutputInterface $output |
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* @return TokenMatcherSpec |
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* @throws Exception |
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* @throws ReflectionException |
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*/ |
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private function buildSpec(InputInterface $input, OutputInterface $output): TokenMatcherSpec |
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{ |
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$specFile = $this->getSpecFile($input); |
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$output->writeln("Specification used: {$specFile}"); |
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return TokenMatcherSpecParser::loadFromFile($specFile) |
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->getMatcherSpec() |
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->addFileComment(...$this->getFileComments($input)); |
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} |
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/** |
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* @param OutputInterface $output |
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* @param TokenMatcherSpec $spec |
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* @return string |
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* @throws Exception |
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* @throws ReflectionException |
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*/ |
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private function buildContent(OutputInterface $output, TokenMatcherSpec $spec): string |
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{ |
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$generator = new TokenMatcherGenerator($spec); |
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$content = $generator->getOutput(); |
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$byteCount = strlen($content); |
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$lineCount = $byteCount > 0 |
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? substr_count($content, "\n") + 1 |
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: 0; |
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$output->writeln("Done ({$lineCount} lines)!"); |
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return $content; |
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} |
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private function buildTarget(InputInterface $input, OutputInterface $output, string $content): void |
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{ |
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$targetFile = $this->getTargetFile($input); |
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$output->writeln("Dumping generated data to file {$targetFile}..."); |
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if (false === file_put_contents($targetFile, $content)) { |
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throw new RuntimeException("Failed to write file {$targetFile}"); |
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} |
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$byteCount = strlen($content); |
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$output->writeln("Done ({$byteCount} bytes)!"); |
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} |
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private function getTargetFile(InputInterface $input): string |
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{ |
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return $input->getArgument('target'); |
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} |
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private function getSpecFile(InputInterface $input): string |
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{ |
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$specFile = $input->getArgument('spec'); |
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$specFile = realpath($specFile); |
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if (false === $specFile) { |
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throw new InvalidOptionException("Option --spec must contain valid path to specification file"); |
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} |
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return $specFile; |
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} |
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private function getFileComments(InputInterface $input): array |
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{ |
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$description = $input->getOption('desc'); |
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return array_merge( |
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isset($description) ? [$description, ''] : [], |
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[ |
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"Auto-generated file, please don't edit manually.", |
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"Generated by UniLex.", |
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] |
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); |
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} |
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} |
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remorhaz /
php-unilex
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