sun.reflect.generics.scope
Class AbstractScope<D extends GenericDeclaration>

java.lang.Object
  sun.reflect.generics.scope.AbstractScope<D>

All Implemented Interfaces:

Scope

Direct Known Subclasses:

ClassScope, ConstructorScope, MethodScope

public abstract class AbstractScope<D extends GenericDeclaration>
extends Object
implements Scope

Abstract superclass for lazy scope objects, used when building factories for generic information repositories. The type parameter D represents the type of reflective object whose scope this class is representing.

To subclass this, all one needs to do is implement computeEnclosingScope and the subclass' constructor.

Constructor Summary

protected

AbstractScope(D decl) Constructor.

Method Summary

protected abstract Scope	computeEnclosingScope() This method must be implemented by any concrete subclass.
protected Scope	getEnclosingScope() Accessor for the enclosing scope, which is computed lazily and cached.
protected D	getRecvr() Accessor for the receiver - the object whose scope this Scope object represents.
TypeVariable<?>	lookup(String name) Lookup a type variable in the scope, using its name.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AbstractScope

protected AbstractScope(D decl)

Constructor. Takes a reflective object whose scope the newly constructed instance will represent.

Parameters:

D - - A generic declaration whose scope the newly constructed instance will represent

Method Detail

getRecvr

protected D getRecvr()

Accessor for the receiver - the object whose scope this Scope object represents.

Returns:

The object whose scope this Scope object represents

computeEnclosingScope

protected abstract Scope computeEnclosingScope()

This method must be implemented by any concrete subclass. It must return the enclosing scope of this scope. If this scope is a top-level scope, an instance of DummyScope must be returned.

Returns:

The enclosing scope of this scope

getEnclosingScope

protected Scope getEnclosingScope()

Accessor for the enclosing scope, which is computed lazily and cached.

Returns:

the enclosing scope

lookup

public TypeVariable<?> lookup(String name)

Lookup a type variable in the scope, using its name. Returns null if no type variable with this name is declared in this scope or any of its surrounding scopes.

Specified by:

lookup in interface Scope

Parameters:

name - - the name of the type variable being looked up

Returns:

the requested type variable, if found