| package org.apache.maven.shared.dependency.analyzer.asm; |
| |
| /* |
| * 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. |
| */ |
| |
| 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.ASM8 ); |
| 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. |
| */ |
| 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} */ |
| public AnnotationVisitor visitAnnotation( final String desc, final boolean visible ) |
| { |
| resultCollector.addDesc( desc ); |
| |
| return annotationVisitor; |
| } |
| |
| /** {@inheritDoc} */ |
| 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. |
| */ |
| 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} */ |
| public void visitNestHost( final String nestHost ) |
| { |
| resultCollector.addName( nestHost ); |
| } |
| |
| /** {@inheritDoc} */ |
| 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 ); |
| } |
| } |
| } |