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<?php |
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declare(strict_types=1); |
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namespace Spiral\Stempler; |
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use Spiral\Stempler\Compiler\Result; |
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use Spiral\Stempler\Exception\CompilerException; |
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use Spiral\Stempler\Exception\ContextExceptionInterface; |
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use Spiral\Stempler\Exception\LoaderException; |
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use Spiral\Stempler\Exception\ParserException; |
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use Spiral\Stempler\Lexer\StringStream; |
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use Spiral\Stempler\Lexer\Token; |
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use Spiral\Stempler\Loader\LoaderInterface; |
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use Spiral\Stempler\Loader\Source; |
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use Spiral\Stempler\Node\Template; |
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use Spiral\Stempler\Parser\Context; |
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/** |
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* Builds and compiles templates using set given compiler. Template is passed thought the set of |
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* visitors each within specific group. |
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*/ |
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final class Builder |
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{ |
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// node visiting stages |
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public const STAGE_PREPARE = 0; |
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public const STAGE_TRANSFORM = 1; |
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public const STAGE_FINALIZE = 2; |
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public const STAGE_COMPILE = 3; |
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/** @var VisitorInterface[][] */ |
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private array $visitors = []; |
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public function __construct( |
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private readonly LoaderInterface $loader, |
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private readonly Parser $parser = new Parser(), |
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private readonly Compiler $compiler = new Compiler() |
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) { |
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} |
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public function getLoader(): LoaderInterface |
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{ |
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return $this->loader; |
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} |
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public function getParser(): Parser |
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{ |
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return $this->parser; |
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} |
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public function getCompiler(): Compiler |
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{ |
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return $this->compiler; |
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} |
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/** |
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* Add visitor to specific builder stage. |
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*/ |
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public function addVisitor(VisitorInterface $visitor, int $stage = self::STAGE_PREPARE): void |
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{ |
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$this->visitors[$stage][] = $visitor; |
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} |
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/** |
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* Compile template. |
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* |
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* @throws CompilerException |
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* @throws \Throwable |
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*/ |
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public function compile(string $path): Result |
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{ |
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$tpl = $this->load($path); |
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return $this->compileTemplate($tpl); |
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} |
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/** |
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* @throws ContextExceptionInterface |
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* @throws \Throwable |
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*/ |
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public function compileTemplate(Template $tpl): Result |
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{ |
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try { |
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if (isset($this->visitors[self::STAGE_COMPILE])) { |
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$traverser = new Traverser($this->visitors[self::STAGE_COMPILE]); |
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$tpl = $traverser->traverse([$tpl])[0]; |
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} |
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return $this->compiler->compile($tpl); |
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} catch (CompilerException $e) { |
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throw $this->mapException($e); |
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} |
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} |
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/** |
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* @throws \Throwable |
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*/ |
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public function load(string $path): Template |
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{ |
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$source = $this->loader->load($path); |
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$stream = new StringStream($source->getContent()); |
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try { |
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$tpl = $this->parser->withPath($path)->parse($stream); |
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$tpl->setContext(new Context( |
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new Token(Token::TYPE_RAW, 0, ''), |
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$path |
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)); |
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} catch (ParserException $e) { |
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throw $this->mapException($e); |
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} |
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try { |
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return $this->process($tpl); |
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} catch (ContextExceptionInterface $e) { |
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throw $this->mapException($e); |
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} catch (\Throwable $e) { |
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throw $e; |
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} |
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} |
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/** |
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* @throws \Throwable |
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*/ |
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private function process(Template $template): Template |
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{ |
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if (isset($this->visitors[self::STAGE_PREPARE])) { |
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$traverser = new Traverser($this->visitors[self::STAGE_PREPARE]); |
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$template = $traverser->traverse([$template])[0]; |
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} |
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if (isset($this->visitors[self::STAGE_TRANSFORM])) { |
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$traverser = new Traverser($this->visitors[self::STAGE_TRANSFORM]); |
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$template = $traverser->traverse([$template])[0]; |
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} |
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if (isset($this->visitors[self::STAGE_FINALIZE])) { |
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$traverser = new Traverser($this->visitors[self::STAGE_FINALIZE]); |
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$template = $traverser->traverse([$template])[0]; |
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} |
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return $template; |
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} |
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/** |
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* Set exception path and line. |
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*/ |
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private function mapException(ContextExceptionInterface $e): ContextExceptionInterface |
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{ |
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if ($e->getContext()->getPath() === null) { |
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return $e; |
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} |
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try { |
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$source = $this->loader->load($e->getContext()->getPath()); |
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} catch (LoaderException) { |
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return $e; |
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} |
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if ($source->getFilename() === null) { |
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return $e; |
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} |
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$e->setLocation( |
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$source->getFilename(), |
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Source::resolveLine($source->getContent(), $e->getContext()->getToken()->offset) |
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); |
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return $e; |
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} |
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} |
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spiral /
framework
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