Mercurial > jdk8-mips64-public > langtools / file revision

 /*

  * 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();

             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(new Object[] { cr, name_index, data.length });

                     } catch (Throwable t) {

                         // fall through and use DefaultAttribute

                         // t.printStackTrace();

                     }

                 }

             } catch (ConstantPoolException e) {

                 // fall through and use DefaultAttribute

             }

             return new DefaultAttribute(cr, name_index, data);

         }

         protected void init() {

             standardAttributes = new HashMap<String,Class<? extends Attribute>>();

             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);

     }

 }