internal List <Token> CreateHierarchy()
{
List <Token> result = new List <Token>();
for (int index = 0; index < elements.Count; index++)
{
Token elem = elements[index];
if (elem is Text)
{
result.Add(elem);
}
else if (elem is Expression)
{
result.Add(elem);
}
else if (elem is Tag)
{
result.Add(CollectForTag((Tag)elem, ref index));
}
else if (elem is StatementClose)
{
throw new TmplException("1Close tag for [" + ((StatementClose)elem).Name + "] doesn't have matching start tag. " + elem.Line + "," + elem.Col, elem.Line, elem.Col);
}
else
{
throw new TmplException("Invalid element: [" + elem.GetType().ToString() + "] " + elem.Line + "," + elem.Col, elem.Line, elem.Col);
}
}
return(result);
}
///======================================================================
private void visitElement(Token elem)
{
if (elem is Expression)
{
visitExpression((Expression)elem);
}
else if (elem is Text)
{
visitText((Text)elem);
}
else if (elem is IfStatement)
{
visitTagIf((IfStatement)elem);
}
else if (elem is Tag)
{
visitTag((Tag)elem);
}
else if (elem is StatementClose)
{
visitTagClose((StatementClose)elem);
}
else
{
WriteLine("Unknown Token: " + elem.GetType().ToString());
}
}
private Tag CollectForTag(Tag tag, ref int index)
{
if (tag.IsClosed)
{
return(tag);
}
if (string.Compare(tag.Name, "if", true) == 0)
{
tag = new IfStatement(tag.Line, tag.Col, tag.AttributeValue("test"));
}
Tag collectTag = tag;
for (index++; index < elements.Count; index++)
{
Token elem = elements[index];
if (elem is Text)
{
collectTag.InnerTokens.Add(elem);
}
else if (elem is Expression)
{
collectTag.InnerTokens.Add(elem);
}
else if (elem is Tag)
{
Tag innerTag = (Tag)elem;
if (string.Compare(innerTag.Name, "else", true) == 0)
{
if (collectTag is IfStatement)
{
((IfStatement)collectTag).FalseBranch = innerTag;
collectTag = innerTag;
}
else
{
throw new TmplException("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 = new IfStatement(innerTag.Line, innerTag.Col, innerTag.AttributeValue("test"));
((IfStatement)collectTag).FalseBranch = newTag;
collectTag = newTag;
}
else
{
throw new TmplException("elseif tag is not positioned properly" + innerTag.Line + "," + innerTag.Col, innerTag.Line, innerTag.Col);
}
}
else
{
collectTag.InnerTokens.Add(CollectForTag(innerTag, ref index));
}
}
else if (elem is StatementClose)
{
StatementClose tagClose = (StatementClose)elem;
return(tag);
}
else
{
throw new TmplException("Invalid element: [" + elem.GetType().ToString() + "] " + elem.Line + "," + elem.Col, elem.Line, elem.Col);
}
}
throw new TmplException("Start tag: [" + tag.Name + "] does not have matching end tag." + tag.Line + "," + tag.Col, tag.Line, tag.Col);
}
///======================================================================
private void visitElement(Token elem)
{
if (elem is Expression)
visitExpression((Expression) elem);
else if (elem is Text)
visitText((Text) elem);
else if (elem is IfStatement)
visitTagIf((IfStatement) elem);
else if (elem is Tag)
visitTag((Tag) elem);
else if (elem is StatementClose)
visitTagClose((StatementClose) elem);
else
WriteLine("Unknown Token: " + elem.GetType().ToString());
}
