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<?php |
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declare(strict_types=1); |
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namespace Spiral\Stempler\Parser\Syntax; |
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use Spiral\Stempler\Exception\SyntaxException; |
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use Spiral\Stempler\Lexer\Grammar\HTMLGrammar; |
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use Spiral\Stempler\Lexer\Token; |
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use Spiral\Stempler\Node\HTML\Attr; |
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use Spiral\Stempler\Node\HTML\Nil; |
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use Spiral\Stempler\Node\HTML\Tag; |
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use Spiral\Stempler\Node\HTML\Verbatim; |
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use Spiral\Stempler\Node\Mixin; |
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use Spiral\Stempler\Node\Raw; |
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use Spiral\Stempler\Parser; |
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use Spiral\Stempler\Parser\Assembler; |
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use Spiral\Stempler\Parser\SyntaxInterface; |
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/** |
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* HTML tags and attributes. |
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*/ |
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final class HTMLSyntax implements SyntaxInterface |
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{ |
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use Parser\Syntax\Traits\MixinTrait; |
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// list of tags which are closed automatically (http://xahlee.info/js/html5_non-closing_tag.html) |
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private const VOID_TAGS = [ |
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'area', |
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'base', |
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'br', |
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'col', |
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'embed', |
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'hr', |
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'img', |
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'input', |
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'link', |
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'meta', |
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'param', |
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'source', |
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'track', |
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'wbr', |
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]; |
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// list of attributes which define verbatim blocks (https://www.w3schools.com/tags/ref_eventattributes.asp) |
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private const VERBATIM_ATTRIBUTES = [ |
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'style', |
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'on*', |
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]; |
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private ?Tag $node = null; |
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private ?Token $token = null; |
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private ?Attr $attr = null; |
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public function handle(Parser $parser, Assembler $asm, Token $token): void |
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{ |
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switch ($token->type) { |
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case HTMLGrammar::TYPE_OPEN: |
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case HTMLGrammar::TYPE_OPEN_SHORT: |
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$this->node = new Tag(new Parser\Context($token, $parser->getPath())); |
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$this->token = $token; |
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break; |
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case HTMLGrammar::TYPE_KEYWORD: |
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if ($this->node->name === null) { |
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$this->node->name = $this->parseToken($parser, $token); |
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return; |
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} |
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if ($this->attr !== null && !$this->attr->value instanceof Nil) { |
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$this->attr->value = $this->parseToken($parser, $token); |
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$this->attr = null; |
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break; |
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} |
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$this->attr = new Attr( |
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$this->parseToken($parser, $token), |
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new Nil(), |
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new Parser\Context($token, $parser->getPath()), |
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); |
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$this->node->attrs[] = $this->attr; |
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break; |
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case HTMLGrammar::TYPE_EQUAL: |
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if ($this->attr === null) { |
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throw new SyntaxException('unexpected attribute token', $token); |
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} |
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// expect the value |
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$this->attr->value = null; |
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break; |
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case HTMLGrammar::TYPE_ATTRIBUTE: |
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if ($this->attr === null) { |
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throw new SyntaxException('unexpected attribute token', $token); |
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} |
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if ( |
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\is_string($this->attr->name) |
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&& ( |
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\str_starts_with($this->attr->name, 'on') |
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|| \in_array($this->attr->name, self::VERBATIM_ATTRIBUTES, true) |
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) |
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) { |
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$this->attr->value = $this->parseVerbatim($parser, $token); |
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} else { |
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$this->attr->value = $this->parseToken($parser, $token); |
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} |
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$this->attr = null; |
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break; |
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case HTMLGrammar::TYPE_CLOSE_SHORT: |
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$this->node->void = true; |
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$asm->push($this->node); |
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$this->flush(); |
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break; |
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case HTMLGrammar::TYPE_CLOSE: |
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if ($this->token->type == HTMLGrammar::TYPE_OPEN_SHORT) { |
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if (!$asm->getNode() instanceof Tag || $asm->getNode()->name !== $this->node->name) { |
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/** |
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* TODO issue #767 |
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* @link https://github.com/spiral/framework/issues/767 |
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* @psalm-suppress NoInterfaceProperties |
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*/ |
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throw new SyntaxException( |
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"Invalid closing tag `{$this->node->name}`, expected `{$asm->getNode()->name}`", |
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$this->token, |
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); |
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} |
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$asm->close(); |
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} elseif (\in_array($this->node->name, self::VOID_TAGS)) { |
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$this->node->void = true; |
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$asm->push($this->node); |
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} else { |
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$asm->open($this->node, 'nodes'); |
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} |
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$this->flush(); |
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break; |
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case HTMLGrammar::TYPE_VERBATIM: |
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$asm->push($this->parseVerbatim($parser, $token)); |
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break; |
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default: |
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if ($asm->getNode() instanceof Mixin || $asm->getNode() instanceof Verbatim) { |
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$node = $this->parseToken($parser, $token); |
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if (\is_string($node)) { |
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$node = new Raw($node, new Parser\Context($token, $parser->getPath())); |
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} |
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$asm->push($node); |
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} |
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} |
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} |
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/** |
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* Flush open nodes and tokens. |
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*/ |
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private function flush(): void |
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{ |
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$this->node = null; |
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$this->token = null; |
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$this->attr = null; |
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} |
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private function parseVerbatim(Parser $parser, Token $token): Verbatim |
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{ |
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$verbatim = new Verbatim(new Parser\Context($token, $parser->getPath())); |
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if ($token->tokens === []) { |
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if ($token->content) { |
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$verbatim->nodes[] = $token->content; |
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} |
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} else { |
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/** |
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* TODO issue #767 |
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* @link https://github.com/spiral/framework/issues/767 |
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* @psalm-suppress InvalidArgument |
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*/ |
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$parser->parseTokens( |
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new Assembler($verbatim, 'nodes'), |
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$token->tokens, |
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); |
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} |
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return $verbatim; |
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} |
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} |
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