/// <summary>
/// 结束标签的解析
/// </summary>
/// <param name="ownerTemplate">模板宿主</param>
/// <param name="container">元素容器</param>
/// <param name="tagStack">标签堆栈</param>
/// <param name="text"></param>
/// <param name="match"></param>
internal virtual void ProcessEndTag(Template ownerTemplate, Tag container, Stack <Tag> tagStack, string text, ref Match match)
{
int charOffset = 0, offset = 0;
bool isClosedTag;
charOffset = offset = match.Index + match.Length;
match = null;
while (offset < text.Length)
{
if (ParserHelper.IsVariableTagStart(text, offset) && (match = ParserRegex.VarTagRegex.Match(text, offset)).Success) //匹配到模板变量
{
//构建文本节点
ParserHelper.CreateTextNode(ownerTemplate, container, text, charOffset, match.Index - charOffset);
//构建模板变量
ParserHelper.CreateVariableTag(ownerTemplate, container, match);
}
else if (ParserHelper.IsTagStart(text, offset) && (match = ParserRegex.TagRegex.Match(text, offset)).Success) //匹配到某种类型的标签
{
//构建文本节点
ParserHelper.CreateTextNode(ownerTemplate, container, text, charOffset, match.Index - charOffset);
//构建标签
Tag tag = ParserHelper.CreateTag(ownerTemplate, match, out isClosedTag);
if (container.IsSingleTag && tag.IsSingleTag)
{
//如果前容器是单一标签并且当前标签也是单一标签.则回退到上一级非单元素标签
while (tagStack.Count > 0)
{
container = tagStack.Peek();
if (container.IsSingleTag)
{
tagStack.Pop();
}
else
{
break;
}
}
}
//将当前标签加入堆栈
tagStack.Push(tag);
//将解析权交给标签
bool flag = tag.ProcessBeginTag(ownerTemplate, container, tagStack, text, ref match, isClosedTag);
//非已闭合标签或者是单标签则处理标签的结束标签
if (flag)
{
tag.ProcessEndTag(ownerTemplate, tag, tagStack, text, ref match);
}
if (tagStack.Count > 0 && tagStack.Peek() == tag && isClosedTag)
{
//闭合标签则回滚一级
tagStack.Pop();
}
if (tag.IsSingleTag)
{
//如果标签是单标签则退出寻找
break;
}
else
{
//取得容器
if (tagStack.Count > 0)
{
container = tagStack.Peek();
}
}
}
else if (ParserHelper.IsCloseTagStart(text, offset) && (match = ParserRegex.EndTagRegex.Match(text, offset)).Success) //匹配到某个结束标签
{
//构建文本节点
ParserHelper.CreateTextNode(ownerTemplate, container, text, charOffset, match.Index - charOffset);
//取得标签名称
string name = match.Groups["tagname"].Value;
//回滚标签堆栈.直到回滚到同名称元素的上级为此
while (tagStack.Count > 0)
{
Tag popTag = tagStack.Pop();
if (name.Equals(popTag.TagName, StringComparison.InvariantCultureIgnoreCase))
{
break;
}
if (!name.Equals(popTag.EndTagName, StringComparison.InvariantCultureIgnoreCase))
{
//非匹配的结束标签.则模板有错
throw new ParserException(string.Format("无效的结束标签,原期望的是{0}结束标签", popTag.EndTagName));
}
}
break;
}
//else if (ParserHelper.IsCommentTagStart(text, offset))
//{
// //构建文本节点
// ParserHelper.CreateTextNode(ownerTemplate, container, text, charOffset, offset - charOffset);
// //找到注释的起始标记"<!--dt[",则直接查找结束标记"]-->"
// offset = text.IndexOf(ParserHelper.CommentTagEnd, offset + ParserHelper.CommentTagStart.Length);
// if (offset == -1) throw new ParserException("无法找到注释的结束标记");
// offset += ParserHelper.CommentTagEnd.Length;
// charOffset = offset;
// continue;
//}
//处理偏移位置
if (match != null && match.Success)
{
charOffset = offset = match.Index + match.Length;
match = null;
}
else
{
offset++;
}
}
if (match == null)
{
throw new ParserException(string.Format("{0}标签未闭合", container.TagName));
}
}