/**
* return IObject
*/
public function parse(string $aSource, ObjectContainer $aObjectContainer, UI $aUI)
{
$nProcIndex = 0;
$aState = ParserStateDefault::singleton();
$aCurrentObject = $aRootObject = new ObjectBase(0, $aSource->length() - 1, 0, '');
while ($nProcIndex < $aSource->length()) {
$aNewState = $aState->examineStateChange($aSource, $nProcIndex, $aCurrentObject);
if ($aNewState) {
// 切换状态
if ($aNewState != $aState) {
//
$aCurrentObject = $aState->sleep($aCurrentObject, $aSource, $nProcIndex - 1);
$aCurrentObject = $aNewState->active($aCurrentObject, $aSource, $nProcIndex);
// 状态变化
$aState = ParserState::queryState($aCurrentObject);
}
} else {
$aCurrentObject = $aState->complete($aCurrentObject, $aSource, $nProcIndex);
if (!$aCurrentObject) {
break;
}
$aCurrentObject = ParserState::queryState($aCurrentObject)->wakeup($aCurrentObject, $aSource, $nProcIndex);
// 状态变化
$aState = ParserState::queryState($aCurrentObject);
}
$nProcIndex++;
}
// 未完成的对象
if ($aCurrentObject != $aRootObject) {
$aBuff = new OutputStreamBuffer();
$aRootObject->printStruct($aBuff);
throw new Exception("<pre>\r\n分析UI模板时遇到未完成的对象：%s\r\n%s\r\n</pre>", array($aCurrentObject->summary(), $aBuff));
}
$aObjectContainer->clear();
foreach ($aRootObject->iterator() as $aObject) {
$aObjectContainer->add($aObject);
}
}
public function childElementsIterator()
{
return parent::iterator();
}