public static MetadataNode TryParseNode(SourceToken[] Tokens, ref int Index)
{
MetadataNode Node = null;
if (Tokens[Index].IsIdentifier)
{
int NewIndex = Index + 1;
// Check whether it has a value
if (Tokens[NewIndex].Text == "=" || Tokens[NewIndex].Text == "(")
{
if (Tokens[NewIndex].Text == "=")
{
NewIndex++;
}
List <MetadataNode> NodeList = TryParseNodeList(Tokens, ref NewIndex);
if (NodeList != null)
{
Node = new MetadataNode(Tokens[Index], NodeList);
Index = NewIndex;
}
else if (Tokens[NewIndex].IsIdentifier || Tokens[NewIndex].IsLiteral)
{
Node = new MetadataNode(Tokens[Index], Tokens[NewIndex]);
Index = NewIndex + 1;
}
}
else
{
Node = new MetadataNode(Tokens[Index]);
Index = NewIndex;
}
}
else if (Tokens[Index].IsLiteral)
{
Node = new MetadataNode(Tokens[Index]);
Index++;
}
return(Node);
}
public static List <MetadataNode> TryParseNodeList(SourceToken[] Tokens, ref int Index)
{
List <MetadataNode> Nodes = null;
if (Tokens[Index].Text == "(")
{
Nodes = new List <MetadataNode>();
int NewIndex = Index + 1;
if (Tokens[NewIndex].Text != ")")
{
for (; ;)
{
// Read the next node
MetadataNode Node = TryParseNode(Tokens, ref NewIndex);
if (Node == null)
{
throw new NotImplementedException();
}
// Append it to the list
Nodes.Add(Node);
// Read the next delimiting comma
if (Tokens[NewIndex].Text == ")")
{
break;
}
if (Tokens[NewIndex].Text != ",")
{
throw new NotImplementedException();
}
NewIndex++;
}
}
Index = NewIndex + 1;
}
return(Nodes);
}
public static MetadataNode TryParseNode(SourceToken[] Tokens, ref int Index)
{
MetadataNode Node = null;
if(Tokens[Index].IsIdentifier)
{
int NewIndex = Index + 1;
// Check whether it has a value
if (Tokens[NewIndex].Text == "=" || Tokens[NewIndex].Text == "(")
{
if(Tokens[NewIndex].Text == "=") NewIndex++;
List<MetadataNode> NodeList = TryParseNodeList(Tokens, ref NewIndex);
if (NodeList != null)
{
Node = new MetadataNode(Tokens[Index], NodeList);
Index = NewIndex;
}
else if(Tokens[NewIndex].IsIdentifier || Tokens[NewIndex].IsLiteral)
{
Node = new MetadataNode(Tokens[Index], Tokens[NewIndex]);
Index = NewIndex + 1;
}
}
else
{
Node = new MetadataNode(Tokens[Index]);
Index = NewIndex;
}
}
else if (Tokens[Index].IsLiteral)
{
Node = new MetadataNode(Tokens[Index]);
Index++;
}
return Node;
}