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<?php declare(strict_types=1); |
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/** |
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* @license http://opensource.org/licenses/mit-license.php MIT |
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* @link https://github.com/nicoSWD |
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* @author Nicolas Oelgart <[email protected]> |
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*/ |
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namespace nicoSWD\Rule\Highlighter; |
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use ArrayIterator; |
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use nicoSWD\Rule\Tokenizer\TokenizerInterface; |
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use nicoSWD\Rule\TokenStream\Token\BaseToken; |
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use nicoSWD\Rule\TokenStream\Token\TokenType; |
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use SplObjectStorage; |
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final class Highlighter |
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{ |
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private readonly SplObjectStorage $styles; |
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public function __construct( |
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private readonly TokenizerInterface $tokenizer, |
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) { |
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$this->styles = new SplObjectStorage(); |
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$this->styles[TokenType::COMMENT] = 'color: #948a8a; font-style: italic;'; |
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$this->styles[TokenType::LOGICAL] = 'color: #c72d2d;'; |
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$this->styles[TokenType::OPERATOR] = 'color: #000;'; |
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$this->styles[TokenType::PARENTHESIS] = 'color: #000;'; |
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$this->styles[TokenType::VALUE] = 'color: #e36700; font-style: italic;'; |
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$this->styles[TokenType::VARIABLE] = 'color: #007694; font-weight: 900;'; |
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$this->styles[TokenType::METHOD] = 'color: #000'; |
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} |
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public function setStyle(TokenType $group, string $style): void |
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{ |
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$this->styles[$group] = $style; |
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} |
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public function highlightString(string $string): string |
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{ |
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return $this->highlightTokens($this->tokenizer->tokenize($string)); |
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} |
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public function highlightTokens(ArrayIterator $tokens): string |
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{ |
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$string = ''; |
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foreach ($tokens as $token) { |
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/** @var BaseToken $token */ |
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$tokenType = $token->getType(); |
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if (isset($this->styles[$tokenType])) { |
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$string .= '<span style="' . $this->styles[$tokenType] . '">' . $this->encode($token) . '</span>'; |
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} else { |
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$string .= $token->getOriginalValue(); |
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} |
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} |
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2 |
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return '<pre><code>' . $string . '</code></pre>'; |
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} |
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private function encode(BaseToken $token): string |
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{ |
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return htmlentities($token->getOriginalValue(), ENT_QUOTES, 'utf-8'); |
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} |
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} |
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nicoSWD /
php-rule-parser
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