package bluej.runtime;




| Interface implemented by all "shell" classes.
|*
* The src for each "shell" class is constructed automatically,
* compiled and executed. They are used for method invocation
* and object creation.
*
* @author  Michael Cahill
* @author  Michael Kolling
 
*/
public abstract class Shell{
|
|/**
| A dummy method called by class loader to prepare the class
| after loading.
|
public static void prepare()
   {     
   }

   



| Provide the shell class with static access to the object
| bench scopes.
|
protected static BJMap getScope(String scopeId)
   {
   return ExecServer.getScope(scopeId);     
   }

   



| Put an object into the scope of one of the object benches.
|
protected static void putObject(String scopeId, String instanceName, Object value)
   {
   ExecServer.addObject(scopeId, instanceName, value);     
   }

   



| Construct an object that allows the result to be plucked out by
| the debugger. We do this so that primitive types can be encapsulated
| properly; if we boxed them, the debugger wouldn't know if the result
| was really primitive or not.
|
public static Object makeObj(final Object o)
   {        
   return new Object() {
      @SuppressWarnings("unused")
           
      public Object result = o;         
      };
   }

   
protected static Object makeObj(final String s)
   {        
   return new Object() {
      @SuppressWarnings("unused")
          
      public String result = s;         
      };
   }

   
protected static Object makeObj(final boolean b)
   {        
   return new Object() {
      @SuppressWarnings("unused")
           
      public boolean result = b;         
      };
   }

   
protected static Object makeObj(final byte b)
   {        
   return new Object() {
      @SuppressWarnings("unused")
           
      public byte result = b;         
      };
   }

   
protected static Object makeObj(final char c)
   {        
   return new Object() {
      @SuppressWarnings("unused")
           
      public char result = c;         
      };
   }

   
protected static Object makeObj(final double d)
{           
return new Object() {
      @SuppressWarnings("unused")
           
      public double result = d;         
      };
   }

   
protected static Object makeObj(final float f)
   {        
   return new Object() {
      @SuppressWarnings("unused")
           
      public float result = f;         
      };
   }

   
protected static Object makeObj(final int i)
   {        
   return new Object() {
      @SuppressWarnings("unused")
           
      public int result = i;         
      };
   }

   
protected static Object makeObj(final long l)
   {        
   return new Object() {
      @SuppressWarnings("unused")
           
      public long result = l;         
      };
   }

   
protected static Object makeObj(final short s)
   {        
   return new Object() {
      @SuppressWarnings("unused")
           
      public short result = s;         
      };
   } 
}