| /* |
| * Copyright 2009 Google Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| * use this file except in compliance with the License. You may obtain a copy of |
| * the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| * License for the specific language governing permissions and limitations under |
| * the License. |
| */ |
| package com.google.gwt.dev.javac.asm; |
| |
| import org.objectweb.asm.Opcodes; |
| import org.objectweb.asm.signature.SignatureVisitor; |
| |
| /** |
| * Signature visitor that does nothing. |
| * |
| * Unlike the ASM-provided EmptyVisitor (which does not implement |
| * SignatureVisitor), this class does not pass itself to unimplemented |
| * sub-visitors, so that a subclass doesn't have to worry about calls for |
| * something under a sub-visitor it doesn't care about. |
| * |
| * There is no need to call any superclass methods from any subclass as they do |
| * nothing. |
| */ |
| public class EmptySignatureVisitor extends SignatureVisitor { |
| |
| protected static EmptySignatureVisitor ignore = new EmptySignatureVisitor(); |
| |
| public EmptySignatureVisitor() { |
| super(Opcodes.ASM7); |
| } |
| |
| /** |
| * Treated as a visitEnd for this visitor. |
| */ |
| @Override |
| public SignatureVisitor visitArrayType() { |
| return ignore; |
| } |
| |
| /** |
| * Treated as a visitEnd for this visitor. |
| */ |
| @Override |
| public void visitBaseType(char descriptor) { |
| } |
| |
| @Override |
| public SignatureVisitor visitClassBound() { |
| return ignore; |
| } |
| |
| @Override |
| public void visitClassType(String name) { |
| } |
| |
| @Override |
| public void visitEnd() { |
| } |
| |
| @Override |
| public SignatureVisitor visitExceptionType() { |
| return ignore; |
| } |
| |
| @Override |
| public void visitFormalTypeParameter(String name) { |
| } |
| |
| @Override |
| public void visitInnerClassType(String name) { |
| } |
| |
| @Override |
| public SignatureVisitor visitInterface() { |
| return ignore; |
| } |
| |
| @Override |
| public SignatureVisitor visitInterfaceBound() { |
| return ignore; |
| } |
| |
| @Override |
| public SignatureVisitor visitParameterType() { |
| return ignore; |
| } |
| |
| @Override |
| public SignatureVisitor visitReturnType() { |
| return ignore; |
| } |
| |
| @Override |
| public SignatureVisitor visitSuperclass() { |
| return ignore; |
| } |
| |
| @Override |
| public void visitTypeArgument() { |
| } |
| |
| @Override |
| public SignatureVisitor visitTypeArgument(char wildcard) { |
| return ignore; |
| } |
| |
| /** |
| * Treated as a visitEnd for this visitor. |
| */ |
| @Override |
| public void visitTypeVariable(String name) { |
| } |
| } |