public function examineStateChange(&$sToken, ParseState $aParseState)
{
if ($sToken !== 'TABLE' and $sToken !== 'TABLES') {
return false;
}
$aParseState->arrTree[] = $sToken;
$sOriToken = $sToken;
// IF NOT EXISTS
$arrTokenList = array('IF', 'NOT', 'EXISTS');
while (1) {
$sToken = next($aParseState->arrTokenList);
if (empty($arrTokenList) or array_shift($arrTokenList) !== $sToken) {
break;
}
$aParseState->arrTree[] = $sToken;
}
// 到头了， table/tables 后面没有内容
if ($sToken === false) {
prev($aParseState->arrTokenList);
array_pop($aParseState->arrTree);
$sToken = $sOriToken;
return false;
} else {
if (strtolower($sToken) === 'status') {
$aParseState->arrTree[] = $sToken;
$sToken = next($aParseState->arrTokenList);
}
}
// 遇到 TABLE ，检查下一个token 是否是有效的表名
// $sToken = next($aParseState->arrTokenList) ;
return parent::examineStateChange($sToken, $aParseState);
}
public function read()
{
parent::read();
$this->cleanUp();
return $this->result;
}
