com.google.gwt.dev.jjs.impl

Class ComputeOverridesAndImplementDefaultMethods

java.lang.Object

com.google.gwt.dev.jjs.impl.ComputeOverridesAndImplementDefaultMethods

public class ComputeOverridesAndImplementDefaultMethods
extends Object

Computes the transitive override relationships between methods and stored them in JMethod, accessible through JMethod.getOverriddenMethods() and JMethod.getOverridingMethods().

In the process of computing overrides, some classes require the addition of stubs or forwarding methods in order to implement default interface methods and to account for accidental overrides

NOTE: Accidental overrides arise when a class A defines an instance method m(), an unrelated interface I also declares a method with the same signature and a second class B extends A and implements I. In this case m() at B is an override of I.m() but is inherited from A making A.m() override a method on an unrelated override.

Modeling accidental overrides in the naive way, i.e. marking the superclass method as overriding a method from an unrelated interface, has many undesirable consequences, the worst of which is that it makes the override relation non-local (only correct with global information.

A simple solution is to explicitly add a (forwarding) stub to the class that inherits the method and implements the interface.

Constructor Summary

Constructors

Constructor and Description
ComputeOverridesAndImplementDefaultMethods()

Method Summary

Modifier and Type	Method and Description
List<JMethod>	exec(JProgram program) Returns the methods created by this pass.

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, toString

Constructor Detail

ComputeOverridesAndImplementDefaultMethods

public ComputeOverridesAndImplementDefaultMethods()

Method Detail

exec

public List<JMethod> exec(JProgram program)

Returns the methods created by this pass. These methods are created due to default declarations or due to accidental overrides.