| /* |
| * 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.myfaces.extensions.scripting.core.engine.dependencyScan.core; |
| |
| import org.objectweb.asm.*; |
| import org.objectweb.asm.signature.SignatureReader; |
| import org.apache.myfaces.extensions.scripting.core.engine.dependencyScan.api.DependencyRegistry; |
| |
| import java.util.logging.Level; |
| import java.util.logging.Logger; |
| |
| /** |
| * A scan visitor on method level |
| * to cope with method scoped dependencies like inlined |
| * fully qualified names, annotations, local variables |
| * etc... |
| * |
| * @author Werner Punz (latest modification by $Author$) |
| * @version $Revision$ $Date$ |
| */ |
| |
| class MethodScanVisitor implements MethodVisitor { |
| |
| // static final Logger log = Logger.getLogger("ClassScanVisitor"); |
| |
| String _currentlyVisitedClass = null; |
| String _rootClass; |
| Integer _engineType = null; |
| DependencyRegistry _dependencyRegistry = null; |
| |
| static Logger _log = Logger.getLogger(MethodScanVisitor.class.getName()); |
| |
| public MethodScanVisitor(Integer engineType, String rootClass, String currentlyVisitedClass, DependencyRegistry registry) { |
| _currentlyVisitedClass = currentlyVisitedClass; |
| _dependencyRegistry = registry; |
| _engineType = engineType; |
| _rootClass = rootClass; |
| } |
| |
| public AnnotationVisitor visitAnnotationDefault() { |
| return null; |
| } |
| |
| public AnnotationVisitor visitAnnotation(String description, boolean b) { |
| if(description != null) { |
| registerDependency(Type.getType(description)); |
| } |
| return null; |
| } |
| |
| public AnnotationVisitor visitParameterAnnotation(int opCode, String description, boolean b) { |
| if(description != null) { |
| registerDependency(Type.getType(description)); |
| } |
| return null; |
| } |
| |
| public void visitAttribute(Attribute attribute) { |
| if (_log.isLoggable(Level.FINEST)) |
| _log.log(Level.FINEST, "visitAttribute {0}", attribute.type); |
| } |
| |
| public void visitCode() { |
| //log.log(Level.INFO, "Method code"); |
| } |
| |
| public void visitFrame(int opCode1, int opCode2, Object[] objects, int opCode3, Object[] objects1) { |
| if (_log.isLoggable(Level.FINEST)) |
| _log.log(Level.FINEST, "visitFrame {0}", ""); |
| |
| } |
| |
| public void visitInsn(int opCode) { |
| } |
| |
| public void visitIntInsn(int opCode1, int opCode2) { |
| } |
| |
| public void visitVarInsn(int opCode1, int opCode2) { |
| } |
| |
| public void visitTypeInsn(int opCode, String castType) { |
| //cast |
| // log.log(Level.INFO, "TypeInsn: {0} ", new String[]{castType}); |
| if (castType != null) { |
| registerDependency(Type.getObjectType(castType)); |
| if (_log.isLoggable(Level.FINEST)) |
| _log.log(Level.FINEST, "visitTypeInsn {0}", castType); |
| } |
| } |
| |
| private void registerDependency(Type dependency) { |
| |
| String className = dependency.getClassName(); |
| |
| |
| if (className.endsWith("[]")) { |
| className = className.substring(0, className.indexOf("[")); |
| } |
| |
| if (_dependencyRegistry != null) { |
| _dependencyRegistry.addDependency(_engineType, _rootClass, _currentlyVisitedClass, className); |
| } |
| } |
| |
| /** |
| * @param opCode the opCode of the insert statement |
| * @param owner hosting classname of field (always the calling class afaik) |
| * @param name internal descriptor |
| * @param descriptor field type |
| */ |
| public void visitFieldInsn(int opCode, String owner, String name, String descriptor) { |
| // log.log(Level.INFO, "visitFieldInsn {0} {1} {2}", new Object[]{owner, name, descriptor}); |
| //we have to deal with static imports as special case of field insertions |
| if (name != null && name.length() > 6 && name.startsWith("class$")) { |
| //special fallback for groovy static imports which are added as fields |
| name = "L" + name.substring(6).replaceAll("\\$", ".") + ";"; |
| registerDependency(Type.getType(name)); |
| } |
| if (descriptor != null) { |
| registerDependency(Type.getType(descriptor)); |
| } |
| |
| if (_log.isLoggable(Level.FINEST)) |
| _log.log(Level.FINEST, "visitFieldInsn {0}", descriptor); |
| |
| } |
| |
| /** |
| * Method call |
| * |
| * @param opc internal opcode |
| * @param owner hosting classname of the method |
| * @param name method name |
| * @param desc descriptor string |
| */ |
| public void visitMethodInsn(int opc, String owner, String name, String desc) { |
| //s2 arguments list |
| if (desc != null) { |
| registerDependency(Type.getReturnType(desc)); |
| Type[] argumentTypes = Type.getArgumentTypes(desc); |
| if (argumentTypes != null) { |
| for (Type argumentType : argumentTypes) { |
| registerDependency(argumentType); |
| } |
| } |
| } |
| |
| if (owner != null) |
| registerDependency(Type.getObjectType(owner)); |
| |
| } |
| |
| public void visitJumpInsn(int i, Label label) { |
| |
| } |
| |
| public void visitLabel(Label label) { |
| |
| } |
| |
| public void visitLdcInsn(Object o) { |
| |
| } |
| |
| public void visitIincInsn(int i, int i1) { |
| |
| } |
| |
| public void visitTableSwitchInsn(int i, int i1, Label label, Label[] labels) { |
| |
| } |
| |
| public void visitLookupSwitchInsn(Label label, int[] ints, Label[] labels) { |
| |
| } |
| |
| public void visitMultiANewArrayInsn(String s, int i) { |
| if (_log.isLoggable(Level.FINEST)) |
| _log.log(Level.FINEST, "visitMultiANewArrayInsn {0}", s); |
| } |
| |
| public void visitTryCatchBlock(Label label, Label label1, Label label2, String catchType) { |
| //try catch block type information in the last string |
| //log.log(Level.INFO, "visitTryCatchBlock: {0} {1} {2} {3}", new Object[]{label.toString(), label1.toString(), label2.toString(), catchType}); |
| if (catchType != null) { |
| registerDependency(Type.getObjectType(catchType)); |
| } |
| } |
| |
| public void visitLocalVariable(String name, String description, String signature, Label label, Label label1, int i) { |
| //local variable on method level |
| if (description != null) { |
| registerDependency(Type.getType(description)); |
| } |
| if (signature != null) { |
| handleGenerics(signature); |
| } |
| } |
| |
| public void visitLineNumber(int i, Label label) { |
| |
| } |
| |
| public void visitMaxs(int i, int i1) { |
| |
| } |
| |
| public void visitEnd() { |
| |
| } |
| |
| private void handleGenerics(String signature) { |
| if (signature != null && signature.contains("<")) { |
| SignatureReader reader = new SignatureReader(signature); |
| reader.acceptType(new DependencySignatureVisitor(_dependencyRegistry, _engineType, _rootClass, _currentlyVisitedClass)); |
| } |
| } |
| } |