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<?php |
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declare(strict_types=1); |
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namespace UnicornFail\Emoji; |
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use UnicornFail\Emoji\Token\AbstractToken; |
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use UnicornFail\Emoji\Token\Emoticon; |
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use UnicornFail\Emoji\Token\HtmlEntity; |
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use UnicornFail\Emoji\Token\Shortcode; |
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use UnicornFail\Emoji\Token\Text; |
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use UnicornFail\Emoji\Token\Unicode; |
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use UnicornFail\Emoji\Util\Normalize; |
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class Parser implements ParserInterface |
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{ |
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private const TYPE_METHODS = [ |
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Lexer::T_TEXT => 'parseText', |
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Lexer::T_EMOTICON => 'parseEmoticon', |
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Lexer::T_HTML_ENTITY => 'parseHtmlEntity', |
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Lexer::T_SHORTCODE => 'parseShortcode', |
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Lexer::T_UNICODE => 'parseUnicode', |
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]; |
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/** @var Configuration|ConfigurationInterface */ |
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private $configuration; |
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/** @var Dataset */ |
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private $dataset; |
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/** @var Lexer */ |
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private $lexer; |
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public function __construct(ConfigurationInterface $configuration, Dataset $dataset, ?Lexer $lexer = null) |
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{ |
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$this->configuration = $configuration; |
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$this->dataset = $dataset; |
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$this->lexer = $lexer ?? new Lexer($configuration); |
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} |
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/** |
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* @return AbstractToken[] |
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*/ |
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public function parse(string $input): array |
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{ |
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$this->lexer->setInput($input); |
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$this->lexer->moveNext(); |
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return $this->parseTokens(); |
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} |
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/** |
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* @return AbstractToken[] |
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*/ |
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protected function parseTokens(): array |
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{ |
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$tokens = []; |
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while (true) { |
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if (! $this->lexer->lookahead) { |
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break; |
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} |
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$this->lexer->moveNext(); |
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$currentToken = \array_merge([ |
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'type' => Lexer::T_TEXT, |
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'value' => '', |
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], $this->lexer->token ?? []); |
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$method = self::TYPE_METHODS[$currentToken['type']] ?? null; |
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if ($method && ($token = $this->$method($currentToken['value'])) instanceof AbstractToken) { |
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$tokens[] = $token; |
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} |
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} |
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return $tokens; |
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} |
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protected function parseEmoticon(string $value): ?Emoticon |
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{ |
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$emoji = $this->dataset->indexBy('emoticon')->offsetGet($value); |
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// Clone the configuration here. This is necessary so it can be passed to tokens, |
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// which may be rendered at a later time; when the configuration may have changed. |
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return $emoji ? new Emoticon(clone $this->configuration, $value, $emoji) : null; |
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} |
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protected function parseHtmlEntity(string $value): ?HtmlEntity |
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{ |
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$emoji = $this->dataset->indexBy('htmlEntity')->offsetGet($value); |
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// Clone the configuration here. This is necessary so it can be passed to tokens, |
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// which may be rendered at a later time; when the configuration may have changed. |
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$configuration = clone $this->configuration; |
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return $emoji ? new HtmlEntity($configuration, $value, $emoji) : null; |
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} |
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protected function parseShortcode(string $value): ?Shortcode |
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{ |
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$emoji = $this->dataset->indexBy('shortcodes')->offsetGet(\current(Normalize::shortcodes($value))); |
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// Clone the configuration here. This is necessary so it can be passed to tokens, |
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// which may be rendered at a later time; when the configuration may have changed. |
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return $emoji ? new Shortcode(clone $this->configuration, $value, $emoji) : null; |
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} |
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protected function parseUnicode(string $value): ?Unicode |
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{ |
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$emoji = $this->dataset->indexBy('emoji')->offsetGet($value) ?: $this->dataset->indexBy('text')->offsetGet($value); |
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// Clone the configuration here. This is necessary so it can be passed to tokens, |
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// which may be rendered at a later time; when the configuration may have changed. |
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return $emoji ? new Unicode(clone $this->configuration, $value, $emoji) : null; |
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} |
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protected function parseText(string $value): ?Text |
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{ |
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$text = ''; |
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while (true) { |
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$text .= $value; |
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if ($this->lexer->lookahead === null || $this->lexer->lookahead['type'] !== Lexer::T_TEXT) { |
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break; |
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} |
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$value = $this->lexer->lookahead['value'] ?? ''; |
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$this->lexer->moveNext(); |
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} |
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return $text ? new Text($text) : null; |
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} |
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} |
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unicorn-fail /
emoji
