public static IParseTree ReconstructTreeAux(Parser grammar, Lexer lexer, IParseTree ast_tree, ParserRuleContext parent)
{
if (ast_tree == null)
{
return(null);
}
// Pre order visit.
if (ast_tree as AstParserParser.NodeContext != null)
{
// Convert.
var v = ast_tree as AstParserParser.NodeContext;
var id = v.GetChild(1).GetText();
if (id == "TOKEN")
{
var type_attr = v.GetChild(2);
var type_str = type_attr.GetChild(2).GetText();
type_str = type_str.Substring(1, type_str.Length - 2);
var type = Int32.Parse(type_str);
var text_attr = v.GetChild(3);
var text_str = text_attr.GetChild(2).GetText();
text_str = text_str.Substring(1, text_str.Length - 2);
var text = text_str;
var sym = new CommonToken(type, text);
var x = new TerminalNodeImpl(sym);
if (parent != null)
{
parent.AddChild(x);
}
return(x);
}
else
{
// Look up "<id>Context" in grammar.
id = id + "Context";
var u = grammar.GetType().GetNestedTypes().Where(t =>
{
if (t.IsClass && t.Name.ToLower() == id.ToLower())
{
return(true);
}
return(false);
});
var w = u.FirstOrDefault();
object[] parms = new object[2];
parms[0] = parent;
parms[1] = 0;
var x = (ParserRuleContext)Activator.CreateInstance(w, parms);
if (parent != null)
{
parent.AddChild(x);
}
for (int i = 0; i < ast_tree.ChildCount; ++i)
{
var c = ast_tree.GetChild(i);
var eq = ReconstructTreeAux(grammar, lexer, c, x);
}
return(x);
}
}
else if (ast_tree as AstParserParser.AttrContext != null)
{
return(null);
}
else
{
var tni = ast_tree as TerminalNodeImpl;
var sym = tni.Symbol;
var pp = sym.GetType().FullName;
return(null);
}
}
private void AddCtx(ParserRuleContext ctx, string s)
{
ctx.AddChild(new CommonToken(0, s));
}