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<?php |
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namespace Popy\Calendar\Parser\FormatParser; |
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use Popy\Calendar\Parser\FormatToken; |
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use Popy\Calendar\Parser\FormatLexerInterface; |
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use Popy\Calendar\Parser\FormatParserInterface; |
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use Popy\Calendar\Parser\SymbolParserInterface; |
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use Popy\Calendar\Parser\DateLexer\PregSimple; |
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use Popy\Calendar\Parser\DateLexer\PregCollection; |
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/** |
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* Preg based implementation of the native DateTimeInterface format, with an |
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* "extension" : | symbols delimits format alternatives. |
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* |
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* Uses PregCollection date lexer, so is only compatible with SymbolParsers that |
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* returns Preg lexers. Otherwise, use another parser, like the basic one. |
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* |
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* PregCollection is usually 3x faster than a standard Collection lexer. |
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*/ |
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class PregExtendedNative implements FormatParserInterface |
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{ |
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/** |
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* Format lexer. |
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* |
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* @var FormatLexerInterface |
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*/ |
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protected $lexer; |
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/** |
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* Symbol Parser. |
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* |
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* @var SymbolParserInterface |
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*/ |
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protected $symbolParser; |
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/** |
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* Class constructor. |
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* |
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* @param FormatLexerInterface $lexer Format lexer. |
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* @param SymbolParserInterface $symbolParser Symbol Parser |
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*/ |
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public function __construct(FormatLexerInterface $lexer, SymbolParserInterface $symbolParser) |
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{ |
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$this->lexer = $lexer; |
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$this->symbolParser = $symbolParser; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function parseFormat($format, $isRecursiveCall = false) |
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{ |
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$tokens = $this->lexer->tokenizeFormat($format); |
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$dateParser = new PregCollection(); |
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$eofLexer = new PregSimple(new FormatToken(null, FormatToken::TYPE_EOF)); |
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foreach ($tokens as $token) { |
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if ($token->is('|')) { |
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if (!$isRecursiveCall) { |
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$dateParser->register($eofLexer); |
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} |
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$dateParser->close(); |
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continue; |
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} |
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$lexer = null; |
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if ($isRecursiveCall && $token->isType(FormatToken::TYPE_EOF)) { |
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// Don't include EOF in recursive calls. |
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break; |
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} |
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if ( |
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$token->isSymbol() |
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&& null === $lexer = $this->symbolParser->parseSymbol( |
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$token, |
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$this |
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) |
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) { |
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// finally, token seems litteral |
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$token = $token->setLitteral(); |
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} |
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if ($lexer === null) { |
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$lexer = new PregSimple($token); |
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} |
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$dateParser->register($lexer); |
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} |
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$dateParser->close(); |
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$dateParser->compile(); |
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return $dateParser; |
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} |
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} |
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popy-dev /
popy-calendar
