1: <?php
 2: 
 3: namespace BN\Compiler\Scanner\Converter;
 4: 
 5: use BN\Compiler\Token\Token;
 6: use BN\Compiler\Token\TokenType;
 7: use BN\Compiler\Scanner\LexemeConverter;
 8: 
 9: class LexemeToVariable implements LexemeConverter
10: {
11:     public function canConvertLexeme($lexeme)
12:     {
13:         $startsWithDollar = $lexeme[0] == '$';
14:         $alphaCharacters = ctype_alpha(substr($lexeme, 1));
15:         return $startsWithDollar && $alphaCharacters;
16:     }
17: 
18:     public function convertLexeme($lexeme)
19:     {
20:         return new Token(TokenType::VARIABLE, $lexeme);
21:     }
22: }
23: