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<?php |
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/** |
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* This file is part of Railt package. |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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declare(strict_types=1); |
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namespace Railt\Compiler\Reader; |
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use Railt\Compiler\Exception\UnknownPragmaException; |
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use Railt\Io\Readable; |
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use Railt\Lexer\TokenInterface; |
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use Railt\Parser\Configuration; |
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/** |
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* Class BasePragmas |
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*/ |
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abstract class BasePragmas implements ProvidePragmas |
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{ |
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/** |
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* @var string |
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*/ |
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public const GROUP_PARSER = 'parser'; |
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/** |
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* @var string |
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*/ |
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public const GROUP_LEXER = 'lexer'; |
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/** |
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* @var string |
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*/ |
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public const GROUP_GRAMMAR = 'grammar'; |
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/** |
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* @var array|Config[] |
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*/ |
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private $resolvers; |
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/** |
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* @var array |
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*/ |
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private $configs = []; |
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/** |
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* PragmaResolver constructor. |
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*/ |
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public function __construct() |
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{ |
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$this->bootResolvers(); |
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} |
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/** |
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* @return void |
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*/ |
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private function bootResolvers(): void |
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{ |
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$this->resolvers[self::GROUP_PARSER] = $this->getParserResolver(); |
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$this->resolvers[self::GROUP_LEXER] = $this->getLexerResolver(); |
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$this->resolvers[self::GROUP_GRAMMAR] = $this->getGrammarResolver(); |
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} |
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/** |
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* @return Config |
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*/ |
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private function getParserResolver(): Config |
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{ |
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return new Config(self::GROUP_PARSER, [ |
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Configuration::PRAGMA_ROOT, |
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Configuration::PRAGMA_LOOKAHEAD, |
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Configuration::PRAGMA_RUNTIME, |
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]); |
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} |
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/** |
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* @return Config |
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*/ |
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private function getLexerResolver(): Config |
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{ |
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return new Config(self::GROUP_LEXER, [ |
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// TODO |
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]); |
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} |
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/** |
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* @return Config |
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*/ |
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private function getGrammarResolver(): Config |
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{ |
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return new Config(self::GROUP_GRAMMAR, [ |
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// TODO |
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]); |
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} |
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/** |
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* @return iterable|Config[] |
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*/ |
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protected function getResolvers(): iterable |
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{ |
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return $this->resolvers; |
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} |
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/** |
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* @return array |
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*/ |
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public function parser(): array |
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{ |
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return $this->resolvers[self::GROUP_GRAMMAR] ?? []; |
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} |
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/** |
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* @return array |
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*/ |
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public function lexer(): array |
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{ |
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return $this->resolvers[self::GROUP_LEXER] ?? []; |
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} |
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/** |
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* @return array |
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*/ |
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public function grammar(): array |
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{ |
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return $this->resolvers[self::GROUP_GRAMMAR] ?? []; |
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} |
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/** |
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* @param string $group |
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* @param string $name |
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* @param string $value |
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*/ |
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protected function set(string $group, string $name, string $value): void |
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{ |
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if (! \array_key_exists($group, $this->configs)) { |
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$this->configs[$group] = []; |
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} |
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$this->configs[$group][$name] = $value; |
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} |
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/** |
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* @param Readable $readable |
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* @param TokenInterface $token |
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* @param null|string $name |
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* @return string |
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* @throws \Railt\Io\Exception\ExternalFileException |
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*/ |
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protected function verifyPragmaName(Readable $readable, TokenInterface $token, ?string $name): string |
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{ |
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if ($name === null) { |
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$error = \vsprintf('Unknown configuration pragma rule "%s" with value "%s"', [ |
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$token->value(1), |
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$token->value(2), |
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]); |
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throw (new UnknownPragmaException($error))->throwsIn($readable, $token->offset()); |
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} |
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return $name; |
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} |
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} |
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railt /
compiler
