| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.maven.shared.dependency.analyzer.asm; |
| |
| import org.objectweb.asm.AnnotationVisitor; |
| import org.objectweb.asm.ClassVisitor; |
| import org.objectweb.asm.FieldVisitor; |
| import org.objectweb.asm.MethodVisitor; |
| import org.objectweb.asm.Opcodes; |
| import org.objectweb.asm.Type; |
| import org.objectweb.asm.signature.SignatureReader; |
| import org.objectweb.asm.signature.SignatureVisitor; |
| |
| /** |
| * Computes the set of classes referenced by visited code. |
| * Inspired by <code>org.objectweb.asm.depend.DependencyVisitor</code> in the ASM dependencies example. |
| * |
| * @author <a href="mailto:markhobson@gmail.com">Mark Hobson</a> |
| */ |
| public class DefaultClassVisitor extends ClassVisitor { |
| private final ResultCollector resultCollector; |
| |
| private final SignatureVisitor signatureVisitor; |
| |
| private final AnnotationVisitor annotationVisitor; |
| |
| private final FieldVisitor fieldVisitor; |
| |
| private final MethodVisitor methodVisitor; |
| |
| /** |
| * <p>Constructor for DefaultClassVisitor.</p> |
| * |
| * @param signatureVisitor a {@link org.objectweb.asm.signature.SignatureVisitor} object. |
| * @param annotationVisitor a {@link org.objectweb.asm.AnnotationVisitor} object. |
| * @param fieldVisitor a {@link org.objectweb.asm.FieldVisitor} object. |
| * @param methodVisitor a {@link org.objectweb.asm.MethodVisitor} object. |
| * @param resultCollector a {@link org.apache.maven.shared.dependency.analyzer.asm.ResultCollector} object. |
| */ |
| public DefaultClassVisitor( |
| SignatureVisitor signatureVisitor, |
| AnnotationVisitor annotationVisitor, |
| FieldVisitor fieldVisitor, |
| MethodVisitor methodVisitor, |
| ResultCollector resultCollector) { |
| super(Opcodes.ASM9); |
| this.signatureVisitor = signatureVisitor; |
| this.annotationVisitor = annotationVisitor; |
| this.fieldVisitor = fieldVisitor; |
| this.methodVisitor = methodVisitor; |
| this.resultCollector = resultCollector; |
| } |
| |
| /** |
| * <p>visit.</p> |
| * |
| * @param version a int. |
| * @param access a int. |
| * @param name a {@link java.lang.String} object. |
| * @param signature a {@link java.lang.String} object. |
| * @param superName a {@link java.lang.String} object. |
| * @param interfaces an array of {@link java.lang.String} objects. |
| */ |
| @Override |
| public void visit( |
| final int version, |
| final int access, |
| final String name, |
| final String signature, |
| final String superName, |
| final String[] interfaces) { |
| if (signature == null) { |
| resultCollector.addName(superName); |
| resultCollector.addNames(interfaces); |
| } else { |
| addSignature(signature); |
| } |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public AnnotationVisitor visitAnnotation(final String desc, final boolean visible) { |
| resultCollector.addDesc(desc); |
| |
| return annotationVisitor; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public FieldVisitor visitField( |
| final int access, final String name, final String desc, final String signature, final Object value) { |
| if (signature == null) { |
| resultCollector.addDesc(desc); |
| } else { |
| addTypeSignature(signature); |
| } |
| |
| if (value instanceof Type) { |
| resultCollector.addType((Type) value); |
| } |
| |
| return fieldVisitor; |
| } |
| |
| /** |
| * <p>visitMethod.</p> |
| * |
| * @param access a int. |
| * @param name a {@link java.lang.String} object. |
| * @param desc a {@link java.lang.String} object. |
| * @param signature a {@link java.lang.String} object. |
| * @param exceptions an array of {@link java.lang.String} objects. |
| * @return a {@link org.objectweb.asm.MethodVisitor} object. |
| */ |
| @Override |
| public MethodVisitor visitMethod( |
| final int access, final String name, final String desc, final String signature, final String[] exceptions) { |
| if (signature == null) { |
| resultCollector.addMethodDesc(desc); |
| } else { |
| addSignature(signature); |
| } |
| |
| resultCollector.addNames(exceptions); |
| |
| return methodVisitor; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public void visitNestHost(final String nestHost) { |
| resultCollector.addName(nestHost); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public void visitNestMember(final String nestMember) { |
| resultCollector.addName(nestMember); |
| } |
| |
| private void addSignature(final String signature) { |
| if (signature != null) { |
| new SignatureReader(signature).accept(signatureVisitor); |
| } |
| } |
| |
| private void addTypeSignature(final String signature) { |
| if (signature != null) { |
| new SignatureReader(signature).acceptType(signatureVisitor); |
| } |
| } |
| } |