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package sun.reflect.generics.reflectiveObjects;

import java.lang.reflect.Type;
import sun.reflect.generics.factory.GenericsFactory;
import sun.reflect.generics.tree.FieldTypeSignature;
import sun.reflect.generics.visitor.Reifier;


Common infrastructure for things that lazily generate reflective generics objects.

In all these cases, one needs produce a visitor that will, on demand, traverse the stored AST(s) and reify them into reflective objects. The visitor needs to be initialized with a factory, which will be provided when the instance is initialized. The factory should be cached.

/** * Common infrastructure for things that lazily generate reflective generics * objects. * <p> In all these cases, one needs produce a visitor that will, on demand, * traverse the stored AST(s) and reify them into reflective objects. * The visitor needs to be initialized with a factory, which will be * provided when the instance is initialized. * The factory should be cached. * */
public abstract class LazyReflectiveObjectGenerator { private final GenericsFactory factory; // cached factory protected LazyReflectiveObjectGenerator(GenericsFactory f) { factory = f; } // accessor for factory private GenericsFactory getFactory() { return factory; } // produce a reifying visitor (could this be typed as a TypeTreeVisitor? protected Reifier getReifier(){return Reifier.make(getFactory());} Type[] reifyBounds(FieldTypeSignature[] boundASTs) { final int length = boundASTs.length; final Type[] bounds = new Type[length]; // iterate over bound trees, reifying each in turn for (int i = 0; i < length; i++) { Reifier r = getReifier(); boundASTs[i].accept(r); bounds[i] = r.getResult(); } return bounds; } }