private Tag CollectForTag(Tag tag, ref int index)
{
if (tag.IsClosed)
{
return(tag);
}
_indent = _indent + 4;
if (tag.Name == "if" || tag.Name == "foreach" || tag.Name == "using" || tag.Name == "define" || tag.Name == "for")
{
//Console.WriteLine(" in "+tag.Name);
_level.Push(tag.Name);
}
if (string.Compare(tag.Name, "if", true) == 0)
{
tag = (IfStatement)tag;
}
Tag collectTag = tag;
for (index++; index < _elements.Count; index++)
{
Token elem = _elements[index];
//Console.WriteLine("x="+elem.TokenKind);
if (elem is Text)
{
collectTag.Tokens.Add(elem);
}
else if (elem is Expression)
{
collectTag.Tokens.Add(elem);
}
else if (elem is Tag)
{
Tag innerTag = (Tag)elem;
//Console.WriteLine("==="+innerTag.Name);
if (string.Compare(innerTag.Name, "else", true) == 0)
{
if (collectTag is IfStatement)
{
((IfStatement)collectTag).FalseBranch = innerTag;
collectTag = innerTag;
}
else
{
throw new VoltException("else tag has to be positioned inside of if or elseif tag " + innerTag.Line + "," + innerTag.Col, innerTag.Line, innerTag.Col);
}
}
else if (string.Compare(innerTag.Name, "elseif", true) == 0)
{
if (collectTag is IfStatement)
{
Tag newTag = (IfStatement)innerTag;
((IfStatement)collectTag).FalseBranch = newTag;
collectTag = newTag;
}
else
{
throw new VoltException("elseif tag is not positioned properly" + innerTag.Line + "," + innerTag.Col, innerTag.Line, innerTag.Col);
}
}
else
{
collectTag.Tokens.Add(CollectForTag(innerTag, ref index));
}
}
else if (elem is TagClose)
{
TagClose tagClose = (TagClose)elem;
_indent = _indent - 4;
_level.Pop();
return(tag);
}
else
{
throw new VoltException("Invalid element: [" + elem.GetType().ToString() + "] " + elem.Line + "," + elem.Col, elem.Line, elem.Col);
}
}
throw new VoltException("Start tag: [" + tag.Name + "] does not have matching end tag." + tag.Line + "," + tag.Col, tag.Line, tag.Col);
}
private Tag CollectForTag(Tag tag, ref int index)
{
if (tag.IsClosed) // if self-closing tag, do not collect inner elements
{
return(tag);
}
if (string.Compare(tag.Name, "if", true) == 0)
{
tag = new TagIf(tag.Line, tag.Col, tag.AttributeValue("test"));
}
Tag collectTag = tag;
for (index++; index < elements.Count; index++)
{
Element elem = elements[index];
if ((elem as Text) != null)
{
collectTag.InnerElements.Add(elem);
}
else if ((elem as Expression) != null)
{
collectTag.InnerElements.Add(elem);
}
else if ((elem as Tag) != null)
{
Tag innerTag = (Tag)elem;
if (string.Compare(innerTag.Name, "else", true) == 0)
{
if ((collectTag as TagIf) != null)
{
((TagIf)collectTag).FalseBranch = innerTag;
collectTag = innerTag;
}
else
{
throw new ParseException("else tag has to be positioned inside of if or elseif tag", innerTag.Line, innerTag.Col);
}
}
else if (string.Compare(innerTag.Name, "elseif", true) == 0)
{
if ((collectTag as TagIf) != null)
{
Tag newTag = new TagIf(innerTag.Line, innerTag.Col, innerTag.AttributeValue("test"));
((TagIf)collectTag).FalseBranch = newTag;
collectTag = newTag;
}
else
{
throw new ParseException("elseif tag is not positioned properly", innerTag.Line, innerTag.Col);
}
}
else
{
collectTag.InnerElements.Add(CollectForTag(innerTag, ref index));
}
}
else if ((elem as TagClose) != null)
{
TagClose tagClose = (TagClose)elem;
if (string.Compare(tag.Name, tagClose.Name, true) == 0)
{
return(tag);
}
throw new ParseException("Close tag for " + tagClose.Name + " doesn't have matching start tag.", elem.Line, elem.Col);
}
else
{
throw new ParseException("Invalid element: " + elem.GetType().ToString(), elem.Line, elem.Col);
}
}
throw new ParseException("Start tag: " + tag.Name + " does not have matching end tag.", tag.Line, tag.Col);
}
/// <summary>
/// 收集子标签。
/// </summary>
/// <param name="tag">指定一个标签实例。</param>
/// <param name="index">指定标签索引。</param>
/// <returns>Tag</returns>
private Tag CollectForTag(Tag tag, ref int index)
{
if (tag.IsClosed)
{
return(tag);
}
if (string.Compare(tag.Name, "if", true) == 0)
{
tag = new TagIf(tag.Line, tag.Col, tag.AttributeValue("test"));
}
Tag collectTag = tag;
for (index++; index < _Elements.Count; index++)
{
Element elem = _Elements[index];
if (elem is Text)
{
collectTag.InnerElements.Add(elem);
}
else if (elem is Expression)
{
collectTag.InnerElements.Add(elem);
}
else if (elem is Tag)
{
Tag innerTag = (Tag)elem;
if (string.Compare(innerTag.Name, "else", true) == 0)
{
if (collectTag is TagIf)
{
((TagIf)collectTag).FalseBranch = innerTag;
collectTag = innerTag;
}
else
{
throw new ParseException("else 标签必须包含在 if 或 elseif 之内。", innerTag.Line, innerTag.Col);
}
}
else if (string.Compare(innerTag.Name, "elseif", true) == 0)
{
if (collectTag is TagIf)
{
Tag newTag = new TagIf(innerTag.Line, innerTag.Col, innerTag.AttributeValue("test"));
((TagIf)collectTag).FalseBranch = newTag;
collectTag = newTag;
}
else
{
throw new ParseException("elseif 标签位置不正确。", innerTag.Line, innerTag.Col);
}
}
else
{
collectTag.InnerElements.Add(CollectForTag(innerTag, ref index));
}
}
else if (elem is TagClose)
{
TagClose tagClose = (TagClose)elem;
if (string.Compare(tag.Name, tagClose.Name, true) == 0)
{
return(tag);
}
throw new ParseException("没有为闭合标签 " + tagClose.Name + " 找到合适的开始标签。", elem.Line, elem.Col);
}
else
{
throw new ParseException("无效标签： " + elem.GetType().ToString(), elem.Line, elem.Col);
}
}
throw new ParseException("没有为开始标签 " + tag.Name + " 找到合适的闭合标签。", tag.Line, tag.Col);
}