public function testGetNext() { $list = new TokensList($this->tokens); $this->assertEquals($this->tokens[0], $list->getNext()); $this->assertEquals($this->tokens[2], $list->getNext()); $this->assertEquals($this->tokens[4], $list->getNext()); $this->assertEquals($this->tokens[6], $list->getNext()); $this->assertEquals(null, $list->getNext()); }
/** * @param Parser $parser The parser that serves as context. * @param TokensList $list The list of tokens that are being parsed. * @param array $options Parameters for parsing. * * @return PartitionDefinition */ public static function parse(Parser $parser, TokensList $list, array $options = array()) { $ret = new PartitionDefinition(); /** * The state of the parser. * * Below are the states of the parser. * * 0 -------------[ PARTITION | SUBPARTITION ]------------> 1 * * 1 -----------------------[ name ]----------------------> 2 * * 2 ----------------------[ VALUES ]---------------------> 3 * * 3 ---------------------[ LESS THAN ]-------------------> 4 * 3 ------------------------[ IN ]-----------------------> 4 * * 4 -----------------------[ expr ]----------------------> 5 * * 5 ----------------------[ options ]--------------------> 6 * * 6 ------------------[ subpartitions ]------------------> (END) * * @var int $state */ $state = 0; for (; $list->idx < $list->count; ++$list->idx) { /** * Token parsed at this moment. * * @var Token $token */ $token = $list->tokens[$list->idx]; // End of statement. if ($token->type === Token::TYPE_DELIMITER) { break; } // Skipping whitespaces and comments. if ($token->type === Token::TYPE_WHITESPACE || $token->type === Token::TYPE_COMMENT) { continue; } if ($state === 0) { $ret->isSubpartition = $token->type === Token::TYPE_KEYWORD && $token->value === 'SUBPARTITION'; $state = 1; } elseif ($state === 1) { $ret->name = $token->value; // Looking ahead for a 'VALUES' keyword. $idx = $list->idx; $list->getNext(); $nextToken = $list->getNext(); $list->idx = $idx; $state = $nextToken->type === Token::TYPE_KEYWORD && $nextToken->value === 'VALUES' ? 2 : 5; } elseif ($state === 2) { $state = 3; } elseif ($state === 3) { $ret->type = $token->value; $state = 4; } elseif ($state === 4) { if ($token->value === 'MAXVALUE') { $ret->expr = $token->value; } else { $ret->expr = Expression::parse($parser, $list, array('parenthesesDelimited' => true, 'breakOnAlias' => true)); } $state = 5; } elseif ($state === 5) { $ret->options = OptionsArray::parse($parser, $list, static::$OPTIONS); $state = 6; } elseif ($state === 6) { if ($token->type === Token::TYPE_OPERATOR && $token->value === '(') { $ret->subpartitions = ArrayObj::parse($parser, $list, array('type' => 'SqlParser\\Components\\PartitionDefinition')); ++$list->idx; } break; } } --$list->idx; return $ret; }