jjg@46: /* jjg@815: * Copyright (c) 2007, 2011, Oracle and/or its affiliates. All rights reserved. jjg@46: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. jjg@46: * jjg@46: * This code is free software; you can redistribute it and/or modify it jjg@46: * under the terms of the GNU General Public License version 2 only, as ohair@554: * published by the Free Software Foundation. Oracle designates this jjg@46: * particular file as subject to the "Classpath" exception as provided ohair@554: * by Oracle in the LICENSE file that accompanied this code. jjg@46: * jjg@46: * This code is distributed in the hope that it will be useful, but WITHOUT jjg@46: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or jjg@46: * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License jjg@46: * version 2 for more details (a copy is included in the LICENSE file that jjg@46: * accompanied this code). jjg@46: * jjg@46: * You should have received a copy of the GNU General Public License version jjg@46: * 2 along with this work; if not, write to the Free Software Foundation, jjg@46: * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. jjg@46: * ohair@554: * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA ohair@554: * or visit www.oracle.com if you need additional information or have any ohair@554: * questions. jjg@46: */ jjg@46: jjg@46: package com.sun.tools.classfile; jjg@46: jjg@46: import java.io.IOException; jjg@46: import java.lang.reflect.Constructor; jjg@46: import java.util.HashMap; jjg@46: import java.util.Map; jjg@46: jjg@46: /** jjg@581: *

This is NOT part of any supported API. jjg@581: * If you write code that depends on this, you do so at your own risk. jjg@46: * This code and its internal interfaces are subject to change or jjg@46: * deletion without notice. jjg@46: */ jjg@46: jjg@46: public abstract class Attribute { jjg@46: public static final String AnnotationDefault = "AnnotationDefault"; ksrini@826: public static final String BootstrapMethods = "BootstrapMethods"; jjg@46: public static final String CharacterRangeTable = "CharacterRangeTable"; jjg@46: public static final String Code = "Code"; jjg@46: public static final String ConstantValue = "ConstantValue"; jjg@46: public static final String CompilationID = "CompilationID"; jjg@46: public static final String Deprecated = "Deprecated"; jjg@46: public static final String EnclosingMethod = "EnclosingMethod"; jjg@46: public static final String Exceptions = "Exceptions"; jjg@46: public static final String InnerClasses = "InnerClasses"; jjg@46: public static final String LineNumberTable = "LineNumberTable"; jjg@46: public static final String LocalVariableTable = "LocalVariableTable"; jjg@46: public static final String LocalVariableTypeTable = "LocalVariableTypeTable"; jjg@46: public static final String RuntimeVisibleAnnotations = "RuntimeVisibleAnnotations"; jjg@46: public static final String RuntimeInvisibleAnnotations = "RuntimeInvisibleAnnotations"; jjg@46: public static final String RuntimeVisibleParameterAnnotations = "RuntimeVisibleParameterAnnotations"; jjg@46: public static final String RuntimeInvisibleParameterAnnotations = "RuntimeInvisibleParameterAnnotations"; jjg@46: public static final String Signature = "Signature"; jjg@46: public static final String SourceDebugExtension = "SourceDebugExtension"; jjg@46: public static final String SourceFile = "SourceFile"; jjg@46: public static final String SourceID = "SourceID"; jjg@46: public static final String StackMap = "StackMap"; jjg@46: public static final String StackMapTable = "StackMapTable"; jjg@46: public static final String Synthetic = "Synthetic"; jjg@46: jjg@46: public static class Factory { jjg@46: public Factory() { jjg@46: // defer init of standardAttributeClasses until after options set up jjg@46: } jjg@46: jjg@46: public void setCompat(boolean compat) { jjg@46: this.compat = compat; jjg@46: } jjg@46: jjg@46: public Attribute createAttribute(ClassReader cr, int name_index, byte[] data) jjg@46: throws IOException { jjg@46: if (standardAttributes == null) jjg@46: init(); jjg@46: jjg@46: ConstantPool cp = cr.getConstantPool(); jjg@46: try { jjg@46: String name = cp.getUTF8Value(name_index); jjg@46: Class attrClass = standardAttributes.get(name); jjg@46: if (attrClass != null) { jjg@46: try { jjg@46: Class[] constrArgTypes = {ClassReader.class, int.class, int.class}; jjg@46: Constructor constr = attrClass.getDeclaredConstructor(constrArgTypes); jjg@46: return constr.newInstance(new Object[] { cr, name_index, data.length }); jjg@46: } catch (Throwable t) { jjg@46: // fall through and use DefaultAttribute jjg@46: // t.printStackTrace(); jjg@46: } jjg@46: } jjg@46: } catch (ConstantPoolException e) { jjg@46: // fall through and use DefaultAttribute jjg@46: } jjg@46: return new DefaultAttribute(cr, name_index, data); jjg@46: } jjg@46: jjg@46: protected void init() { jjg@46: standardAttributes = new HashMap>(); jjg@46: standardAttributes.put(AnnotationDefault, AnnotationDefault_attribute.class); ksrini@826: standardAttributes.put(BootstrapMethods, BootstrapMethods_attribute.class); jjg@46: standardAttributes.put(CharacterRangeTable, CharacterRangeTable_attribute.class); jjg@46: standardAttributes.put(Code, Code_attribute.class); jjg@46: standardAttributes.put(ConstantValue, ConstantValue_attribute.class); jjg@46: standardAttributes.put(Deprecated, Deprecated_attribute.class); jjg@46: standardAttributes.put(EnclosingMethod, EnclosingMethod_attribute.class); jjg@46: standardAttributes.put(Exceptions, Exceptions_attribute.class); jjg@46: standardAttributes.put(InnerClasses, InnerClasses_attribute.class); jjg@46: standardAttributes.put(LineNumberTable, LineNumberTable_attribute.class); jjg@46: standardAttributes.put(LocalVariableTable, LocalVariableTable_attribute.class); jjg@46: standardAttributes.put(LocalVariableTypeTable, LocalVariableTypeTable_attribute.class); jjg@46: jjg@46: if (!compat) { // old javap does not recognize recent attributes jjg@46: standardAttributes.put(CompilationID, CompilationID_attribute.class); jjg@46: standardAttributes.put(RuntimeInvisibleAnnotations, RuntimeInvisibleAnnotations_attribute.class); jjg@46: standardAttributes.put(RuntimeInvisibleParameterAnnotations, RuntimeInvisibleParameterAnnotations_attribute.class); jjg@46: standardAttributes.put(RuntimeVisibleAnnotations, RuntimeVisibleAnnotations_attribute.class); jjg@46: standardAttributes.put(RuntimeVisibleParameterAnnotations, RuntimeVisibleParameterAnnotations_attribute.class); jjg@46: standardAttributes.put(Signature, Signature_attribute.class); jjg@46: standardAttributes.put(SourceID, SourceID_attribute.class); jjg@46: } jjg@46: jjg@46: standardAttributes.put(SourceDebugExtension, SourceDebugExtension_attribute.class); jjg@46: standardAttributes.put(SourceFile, SourceFile_attribute.class); jjg@46: standardAttributes.put(StackMap, StackMap_attribute.class); jjg@46: standardAttributes.put(StackMapTable, StackMapTable_attribute.class); jjg@46: standardAttributes.put(Synthetic, Synthetic_attribute.class); jjg@46: } jjg@46: jjg@46: private Map> standardAttributes; jjg@46: private boolean compat; // don't support recent attrs in compatibility mode jjg@46: } jjg@46: jjg@46: public static Attribute read(ClassReader cr) throws IOException { jjg@46: return cr.readAttribute(); jjg@46: } jjg@46: jjg@46: protected Attribute(int name_index, int length) { jjg@46: attribute_name_index = name_index; jjg@46: attribute_length = length; jjg@46: } jjg@46: jjg@46: public String getName(ConstantPool constant_pool) throws ConstantPoolException { jjg@46: return constant_pool.getUTF8Value(attribute_name_index); jjg@46: } jjg@46: jjg@46: public abstract R accept(Attribute.Visitor visitor, D data); jjg@46: jjg@345: public int byteLength() { jjg@345: return 6 + attribute_length; jjg@345: } jjg@345: jjg@46: public final int attribute_name_index; jjg@46: public final int attribute_length; jjg@46: jjg@46: jjg@46: public interface Visitor { ksrini@826: R visitBootstrapMethods(BootstrapMethods_attribute attr, P p); jjg@46: R visitDefault(DefaultAttribute attr, P p); jjg@46: R visitAnnotationDefault(AnnotationDefault_attribute attr, P p); jjg@46: R visitCharacterRangeTable(CharacterRangeTable_attribute attr, P p); jjg@46: R visitCode(Code_attribute attr, P p); jjg@46: R visitCompilationID(CompilationID_attribute attr, P p); jjg@46: R visitConstantValue(ConstantValue_attribute attr, P p); jjg@46: R visitDeprecated(Deprecated_attribute attr, P p); jjg@46: R visitEnclosingMethod(EnclosingMethod_attribute attr, P p); jjg@46: R visitExceptions(Exceptions_attribute attr, P p); jjg@46: R visitInnerClasses(InnerClasses_attribute attr, P p); jjg@46: R visitLineNumberTable(LineNumberTable_attribute attr, P p); jjg@46: R visitLocalVariableTable(LocalVariableTable_attribute attr, P p); jjg@46: R visitLocalVariableTypeTable(LocalVariableTypeTable_attribute attr, P p); jjg@46: R visitRuntimeVisibleAnnotations(RuntimeVisibleAnnotations_attribute attr, P p); jjg@46: R visitRuntimeInvisibleAnnotations(RuntimeInvisibleAnnotations_attribute attr, P p); jjg@46: R visitRuntimeVisibleParameterAnnotations(RuntimeVisibleParameterAnnotations_attribute attr, P p); jjg@46: R visitRuntimeInvisibleParameterAnnotations(RuntimeInvisibleParameterAnnotations_attribute attr, P p); jjg@46: R visitSignature(Signature_attribute attr, P p); jjg@46: R visitSourceDebugExtension(SourceDebugExtension_attribute attr, P p); jjg@46: R visitSourceFile(SourceFile_attribute attr, P p); jjg@46: R visitSourceID(SourceID_attribute attr, P p); jjg@46: R visitStackMap(StackMap_attribute attr, P p); jjg@46: R visitStackMapTable(StackMapTable_attribute attr, P p); jjg@46: R visitSynthetic(Synthetic_attribute attr, P p); jjg@46: } jjg@46: }