/**
   * This method is used to add "bridge" methods for private methods of an inner/outer class, so
   * that the outer class is capable of calling them. It does basically the same job as access$000
   * like methods in Java.
   *
   * @param node an inner/outer class node for which to generate bridge methods
   */
  @SuppressWarnings("unchecked")
  private void addPrivateBridgeMethods(final ClassNode node) {
    Set<ASTNode> accessedMethods =
        (Set<ASTNode>) node.getNodeMetaData(StaticTypesMarker.PV_METHODS_ACCESS);
    if (accessedMethods == null) return;
    List<MethodNode> methods = new ArrayList<MethodNode>(node.getAllDeclaredMethods());
    Map<MethodNode, MethodNode> privateBridgeMethods =
        (Map<MethodNode, MethodNode>) node.getNodeMetaData(PRIVATE_BRIDGE_METHODS);
    if (privateBridgeMethods != null) {
      // private bridge methods already added
      return;
    }
    privateBridgeMethods = new HashMap<MethodNode, MethodNode>();
    int i = -1;
    final int access = Opcodes.ACC_STATIC | Opcodes.ACC_PUBLIC | Opcodes.ACC_SYNTHETIC;
    for (MethodNode method : methods) {
      if (accessedMethods.contains(method)) {
        i++;
        Parameter[] methodParameters = method.getParameters();
        Parameter[] newParams = new Parameter[methodParameters.length + 1];
        System.arraycopy(methodParameters, 0, newParams, 1, methodParameters.length);
        newParams[0] = new Parameter(node.getPlainNodeReference(), "$that");
        Expression arguments;
        if (method.getParameters() == null || method.getParameters().length == 0) {
          arguments = ArgumentListExpression.EMPTY_ARGUMENTS;
        } else {
          List<Expression> args = new LinkedList<Expression>();
          for (Parameter parameter : methodParameters) {
            args.add(new VariableExpression(parameter));
          }
          arguments = new ArgumentListExpression(args);
        }
        Expression receiver =
            method.isStatic() ? new ClassExpression(node) : new VariableExpression(newParams[0]);
        MethodCallExpression mce = new MethodCallExpression(receiver, method.getName(), arguments);
        mce.setMethodTarget(method);

        ExpressionStatement returnStatement = new ExpressionStatement(mce);
        MethodNode bridge =
            node.addMethod(
                "access$" + i,
                access,
                method.getReturnType(),
                newParams,
                method.getExceptions(),
                returnStatement);
        privateBridgeMethods.put(method, bridge);
        bridge.addAnnotation(new AnnotationNode(COMPILESTATIC_CLASSNODE));
      }
    }
    if (!privateBridgeMethods.isEmpty()) {
      node.setNodeMetaData(PRIVATE_BRIDGE_METHODS, privateBridgeMethods);
    }
  }
예제 #2
0
 public void addMixin(MixinNode mixin) {
   // let's check if it already uses a mixin
   MixinNode[] mixins = redirect().mixins;
   boolean skip = false;
   for (MixinNode existing : mixins) {
     if (mixin.equals(existing)) {
       skip = true;
       break;
     }
   }
   if (!skip) {
     MixinNode[] newMixins = new MixinNode[mixins.length + 1];
     System.arraycopy(mixins, 0, newMixins, 0, mixins.length);
     newMixins[mixins.length] = mixin;
     redirect().mixins = newMixins;
   }
 }
예제 #3
0
 public void addInterface(ClassNode type) {
   // let's check if it already implements an interface
   boolean skip = false;
   ClassNode[] interfaces = redirect().interfaces;
   for (ClassNode existing : interfaces) {
     if (type.equals(existing)) {
       skip = true;
       break;
     }
   }
   if (!skip) {
     ClassNode[] newInterfaces = new ClassNode[interfaces.length + 1];
     System.arraycopy(interfaces, 0, newInterfaces, 0, interfaces.length);
     newInterfaces[interfaces.length] = type;
     redirect().interfaces = newInterfaces;
   }
 }