package bluej.parser.entity;

import java.util.List;

import bluej.debugger.gentype.GenTypeDeclTpar;
import bluej.debugger.gentype.GenTypeSolid;
import bluej.debugger.gentype.JavaType;
import bluej.debugger.gentype.Reflective;
import threadchecker.OnThread;
import threadchecker.Tag;




| A JavaEntity subclass for representing type parameters. In particular this avoids
| the problems associated with recursive definitions such as:
|
| <blockquote>
|     <code>class Sort<T extends Comparable<T>> {} }</code></dt>
| </blockquote>
|
| @author Davin McCall
|
public class TparEntity
extends JavaEntity{    
   private JavaEntity bounds;
   
   private GenTypeDeclTpar tpar;
   
   private String name;
    
   
   public TparEntity(String name, JavaEntity bounds)
   {
      super();
       
      this.name = name;
       
      this.tpar = new GenTypeDeclTpar(name);
       
      this.bounds = bounds;     
      }

   
   @Override
   @OnThread(Tag.FXPlatform)
   
   public GenTypeDeclTpar getType()
   {
      if (bounds != null) {            
         JavaEntity boundsCopy = bounds;
           
         bounds = null; 
            
         TypeEntity tent = boundsCopy.resolveAsType();
         if (tent != null) {
            GenTypeSolid boundType = tent.getType().asSolid();
            if (boundType != null) {
               tpar.setBounds(boundType.getUpperBounds());                 
               }
               

            else {
                   
            tpar = null;                 
            }             
         }
           

      else {
               
      tpar = null;             
      }         
   }
       
return tpar;     
}
    
   
@Override
   
public TypeEntity resolveAsType()
   {
   JavaType myType = getType();
   if (myType != null) {            
      return new TypeEntity(myType);         
      }
       

   else {
           
   return null;         
   }     
}
    
   
@Override
   
public JavaEntity setTypeArgs(List<TypeArgumentEntity> tparams)
   {        
   return null;     
   }
    
   
@Override
   
public JavaEntity getSubentity(String name, Reflective accessSource)
   {        
   return null;     
   }
    
   
@Override
   
public String getName()
   {        
   return name;     
   } 
}