[antlr-interest] A problem with loading AST Node type (screen picattached)

[Micheal J]

Nothing springs to mind that can help directly. I can only confirm that the heteroAST examples works fine here (.NET 1.1) and it's doing exactly what you are.
 
- Does that example work on your system?
 
- Did you build a .NET 2.0 version of the antlr.runtime.dll?
 
Micheal

-----Original Message-----
From: antlr-interest-bounces at antlr.org [mailto:antlr-interest-bounces at antlr.org] On Behalf Of Ëï¼Í¸Õ Jigang (Robert) Sun
Sent: 07 February 2006 17:39
To: antlr-interest at antlr.org
Subject: [antlr-interest] A problem with loading AST Node type (screen picattached)


A problem with loading AST Node type occured.

Here is my simplest grammar:

primaryExp
:
INTEGER_LITERAL <AST=INTNode>
;


INTNode class under my namespace (all generated classes and main class are all in the same name space)

public abstract class Expr : antlr.BaseAST{
      public abstract int value();
}

public class INTNode:Expr{
  int val=0;
  public INTNode(Token tok){
   val=int.Parse(tok.getText());
   }
  public override int value(){
   return val;
  }
  
  public override  void initialize(AST t){
  }
  public override  void initialize(IToken t){
  }
  public override  void initialize(int i,string s){
  }
 }
Error occurs when the following method of class ASTFactor y was trying to load my INTNode:


  private Type loadNodeTypeObject(string nodeTypeName)
  {
   Type nodeTypeObject = null;
   bool typeCreated  = false;
   if (nodeTypeName != null)
   {
    foreach (Assembly assem in AppDomain.CurrentDomain.GetAssemblies())
    {
     try
     {
      nodeTypeObject = assem.GetType(nodeTypeName);
      if (nodeTypeObject != null)
      {
       typeCreated = true;
       break;
      }
     }
     catch
     {
      typeCreated = false;
     }
    }
   }
   if (!typeCreated)
   {
    throw new TypeLoadException("Unable to load AST Node Type: '" + nodeTypeName + "'");
   }
   return nodeTypeObject;
  }


the error message is "Unable to load AST Node". I checked locals windows (stepping run mode), found that the node INTNode is "non_public member" as showed on attched picture. I got puzzuled since my class was declared as public.

Jigang





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