| /* |
| * Copyright (c) 2007, 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package com.sun.tools.classfile; |
| |
| import java.io.IOException; |
| import java.lang.reflect.Constructor; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| /** |
| * <p><b>This is NOT part of any supported API. |
| * If you write code that depends on this, you do so at your own risk. |
| * This code and its internal interfaces are subject to change or |
| * deletion without notice.</b> |
| */ |
| |
| public abstract class Attribute { |
| public static final String AnnotationDefault = "AnnotationDefault"; |
| public static final String BootstrapMethods = "BootstrapMethods"; |
| public static final String CharacterRangeTable = "CharacterRangeTable"; |
| public static final String Code = "Code"; |
| public static final String ConstantValue = "ConstantValue"; |
| public static final String CompilationID = "CompilationID"; |
| public static final String Deprecated = "Deprecated"; |
| public static final String EnclosingMethod = "EnclosingMethod"; |
| public static final String Exceptions = "Exceptions"; |
| public static final String InnerClasses = "InnerClasses"; |
| public static final String LineNumberTable = "LineNumberTable"; |
| public static final String LocalVariableTable = "LocalVariableTable"; |
| public static final String LocalVariableTypeTable = "LocalVariableTypeTable"; |
| public static final String MethodParameters = "MethodParameters"; |
| public static final String RuntimeVisibleAnnotations = "RuntimeVisibleAnnotations"; |
| public static final String RuntimeInvisibleAnnotations = "RuntimeInvisibleAnnotations"; |
| public static final String RuntimeVisibleParameterAnnotations = "RuntimeVisibleParameterAnnotations"; |
| public static final String RuntimeInvisibleParameterAnnotations = "RuntimeInvisibleParameterAnnotations"; |
| public static final String RuntimeVisibleTypeAnnotations = "RuntimeVisibleTypeAnnotations"; |
| public static final String RuntimeInvisibleTypeAnnotations = "RuntimeInvisibleTypeAnnotations"; |
| public static final String Signature = "Signature"; |
| public static final String SourceDebugExtension = "SourceDebugExtension"; |
| public static final String SourceFile = "SourceFile"; |
| public static final String SourceID = "SourceID"; |
| public static final String StackMap = "StackMap"; |
| public static final String StackMapTable = "StackMapTable"; |
| public static final String Synthetic = "Synthetic"; |
| |
| public static class Factory { |
| public Factory() { |
| // defer init of standardAttributeClasses until after options set up |
| } |
| |
| public void setCompat(boolean compat) { |
| this.compat = compat; |
| } |
| |
| public Attribute createAttribute(ClassReader cr, int name_index, byte[] data) |
| throws IOException { |
| if (standardAttributes == null) { |
| init(); |
| } |
| |
| ConstantPool cp = cr.getConstantPool(); |
| String reasonForDefaultAttr; |
| try { |
| String name = cp.getUTF8Value(name_index); |
| Class<? extends Attribute> attrClass = standardAttributes.get(name); |
| if (attrClass != null) { |
| try { |
| Class<?>[] constrArgTypes = {ClassReader.class, int.class, int.class}; |
| Constructor<? extends Attribute> constr = attrClass.getDeclaredConstructor(constrArgTypes); |
| return constr.newInstance(cr, name_index, data.length); |
| } catch (Throwable t) { |
| reasonForDefaultAttr = t.toString(); |
| // fall through and use DefaultAttribute |
| // t.printStackTrace(); |
| } |
| } else { |
| reasonForDefaultAttr = "unknown attribute"; |
| } |
| } catch (ConstantPoolException e) { |
| reasonForDefaultAttr = e.toString(); |
| // fall through and use DefaultAttribute |
| } |
| return new DefaultAttribute(cr, name_index, data, reasonForDefaultAttr); |
| } |
| |
| protected void init() { |
| standardAttributes = new HashMap<>(); |
| standardAttributes.put(AnnotationDefault, AnnotationDefault_attribute.class); |
| standardAttributes.put(BootstrapMethods, BootstrapMethods_attribute.class); |
| standardAttributes.put(CharacterRangeTable, CharacterRangeTable_attribute.class); |
| standardAttributes.put(Code, Code_attribute.class); |
| standardAttributes.put(ConstantValue, ConstantValue_attribute.class); |
| standardAttributes.put(Deprecated, Deprecated_attribute.class); |
| standardAttributes.put(EnclosingMethod, EnclosingMethod_attribute.class); |
| standardAttributes.put(Exceptions, Exceptions_attribute.class); |
| standardAttributes.put(InnerClasses, InnerClasses_attribute.class); |
| standardAttributes.put(LineNumberTable, LineNumberTable_attribute.class); |
| standardAttributes.put(LocalVariableTable, LocalVariableTable_attribute.class); |
| standardAttributes.put(LocalVariableTypeTable, LocalVariableTypeTable_attribute.class); |
| |
| if (!compat) { // old javap does not recognize recent attributes |
| standardAttributes.put(MethodParameters, MethodParameters_attribute.class); |
| standardAttributes.put(CompilationID, CompilationID_attribute.class); |
| standardAttributes.put(RuntimeInvisibleAnnotations, RuntimeInvisibleAnnotations_attribute.class); |
| standardAttributes.put(RuntimeInvisibleParameterAnnotations, RuntimeInvisibleParameterAnnotations_attribute.class); |
| standardAttributes.put(RuntimeVisibleAnnotations, RuntimeVisibleAnnotations_attribute.class); |
| standardAttributes.put(RuntimeVisibleParameterAnnotations, RuntimeVisibleParameterAnnotations_attribute.class); |
| standardAttributes.put(RuntimeVisibleTypeAnnotations, RuntimeVisibleTypeAnnotations_attribute.class); |
| standardAttributes.put(RuntimeInvisibleTypeAnnotations, RuntimeInvisibleTypeAnnotations_attribute.class); |
| standardAttributes.put(Signature, Signature_attribute.class); |
| standardAttributes.put(SourceID, SourceID_attribute.class); |
| } |
| |
| standardAttributes.put(SourceDebugExtension, SourceDebugExtension_attribute.class); |
| standardAttributes.put(SourceFile, SourceFile_attribute.class); |
| standardAttributes.put(StackMap, StackMap_attribute.class); |
| standardAttributes.put(StackMapTable, StackMapTable_attribute.class); |
| standardAttributes.put(Synthetic, Synthetic_attribute.class); |
| } |
| |
| private Map<String,Class<? extends Attribute>> standardAttributes; |
| private boolean compat; // don't support recent attrs in compatibility mode |
| } |
| |
| public static Attribute read(ClassReader cr) throws IOException { |
| return cr.readAttribute(); |
| } |
| |
| protected Attribute(int name_index, int length) { |
| attribute_name_index = name_index; |
| attribute_length = length; |
| } |
| |
| public String getName(ConstantPool constant_pool) throws ConstantPoolException { |
| return constant_pool.getUTF8Value(attribute_name_index); |
| } |
| |
| public abstract <R,D> R accept(Attribute.Visitor<R,D> visitor, D data); |
| |
| public int byteLength() { |
| return 6 + attribute_length; |
| } |
| |
| public final int attribute_name_index; |
| public final int attribute_length; |
| |
| |
| public interface Visitor<R,P> { |
| R visitBootstrapMethods(BootstrapMethods_attribute attr, P p); |
| R visitDefault(DefaultAttribute attr, P p); |
| R visitAnnotationDefault(AnnotationDefault_attribute attr, P p); |
| R visitCharacterRangeTable(CharacterRangeTable_attribute attr, P p); |
| R visitCode(Code_attribute attr, P p); |
| R visitCompilationID(CompilationID_attribute attr, P p); |
| R visitConstantValue(ConstantValue_attribute attr, P p); |
| R visitDeprecated(Deprecated_attribute attr, P p); |
| R visitEnclosingMethod(EnclosingMethod_attribute attr, P p); |
| R visitExceptions(Exceptions_attribute attr, P p); |
| R visitInnerClasses(InnerClasses_attribute attr, P p); |
| R visitLineNumberTable(LineNumberTable_attribute attr, P p); |
| R visitLocalVariableTable(LocalVariableTable_attribute attr, P p); |
| R visitLocalVariableTypeTable(LocalVariableTypeTable_attribute attr, P p); |
| R visitMethodParameters(MethodParameters_attribute attr, P p); |
| R visitRuntimeVisibleAnnotations(RuntimeVisibleAnnotations_attribute attr, P p); |
| R visitRuntimeInvisibleAnnotations(RuntimeInvisibleAnnotations_attribute attr, P p); |
| R visitRuntimeVisibleParameterAnnotations(RuntimeVisibleParameterAnnotations_attribute attr, P p); |
| R visitRuntimeInvisibleParameterAnnotations(RuntimeInvisibleParameterAnnotations_attribute attr, P p); |
| R visitRuntimeVisibleTypeAnnotations(RuntimeVisibleTypeAnnotations_attribute attr, P p); |
| R visitRuntimeInvisibleTypeAnnotations(RuntimeInvisibleTypeAnnotations_attribute attr, P p); |
| R visitSignature(Signature_attribute attr, P p); |
| R visitSourceDebugExtension(SourceDebugExtension_attribute attr, P p); |
| R visitSourceFile(SourceFile_attribute attr, P p); |
| R visitSourceID(SourceID_attribute attr, P p); |
| R visitStackMap(StackMap_attribute attr, P p); |
| R visitStackMapTable(StackMapTable_attribute attr, P p); |
| R visitSynthetic(Synthetic_attribute attr, P p); |
| } |
| } |
