src/share/classes/com/sun/tools/javap/AttributeWriter.java

Thu, 19 Nov 2009 11:38:38 -0800

author
jjg
date
Thu, 19 Nov 2009 11:38:38 -0800
changeset 437
a509a22f9845
parent 432
a491ad1bb624
child 554
9d9f26857129
permissions
-rw-r--r--

6902264: fix indentation of tableswitch and lookupswitch
Reviewed-by: ksrini

     1 /*
     2  * Copyright 2007-2008 Sun Microsystems, Inc.  All Rights Reserved.
     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
     4  *
     5  * This code is free software; you can redistribute it and/or modify it
     6  * under the terms of the GNU General Public License version 2 only, as
     7  * published by the Free Software Foundation.  Sun designates this
     8  * particular file as subject to the "Classpath" exception as provided
     9  * by Sun in the LICENSE file that accompanied this code.
    10  *
    11  * This code is distributed in the hope that it will be useful, but WITHOUT
    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    14  * version 2 for more details (a copy is included in the LICENSE file that
    15  * accompanied this code).
    16  *
    17  * You should have received a copy of the GNU General Public License version
    18  * 2 along with this work; if not, write to the Free Software Foundation,
    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
    20  *
    21  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
    22  * CA 95054 USA or visit www.sun.com if you need additional information or
    23  * have any questions.
    24  */
    26 package com.sun.tools.javap;
    28 import java.util.Formatter;
    30 import com.sun.tools.classfile.AccessFlags;
    31 import com.sun.tools.classfile.AnnotationDefault_attribute;
    32 import com.sun.tools.classfile.Attribute;
    33 import com.sun.tools.classfile.Attributes;
    34 import com.sun.tools.classfile.CharacterRangeTable_attribute;
    35 import com.sun.tools.classfile.Code_attribute;
    36 import com.sun.tools.classfile.CompilationID_attribute;
    37 import com.sun.tools.classfile.ConstantPool;
    38 import com.sun.tools.classfile.ConstantPoolException;
    39 import com.sun.tools.classfile.ConstantValue_attribute;
    40 import com.sun.tools.classfile.DefaultAttribute;
    41 import com.sun.tools.classfile.Deprecated_attribute;
    42 import com.sun.tools.classfile.EnclosingMethod_attribute;
    43 import com.sun.tools.classfile.Exceptions_attribute;
    44 import com.sun.tools.classfile.InnerClasses_attribute;
    45 import com.sun.tools.classfile.LineNumberTable_attribute;
    46 import com.sun.tools.classfile.LocalVariableTable_attribute;
    47 import com.sun.tools.classfile.LocalVariableTypeTable_attribute;
    48 import com.sun.tools.classfile.RuntimeInvisibleAnnotations_attribute;
    49 import com.sun.tools.classfile.RuntimeInvisibleParameterAnnotations_attribute;
    50 import com.sun.tools.classfile.RuntimeInvisibleTypeAnnotations_attribute;
    51 import com.sun.tools.classfile.RuntimeVisibleAnnotations_attribute;
    52 import com.sun.tools.classfile.RuntimeVisibleParameterAnnotations_attribute;
    53 import com.sun.tools.classfile.RuntimeVisibleTypeAnnotations_attribute;
    54 import com.sun.tools.classfile.Signature_attribute;
    55 import com.sun.tools.classfile.SourceDebugExtension_attribute;
    56 import com.sun.tools.classfile.SourceFile_attribute;
    57 import com.sun.tools.classfile.SourceID_attribute;
    58 import com.sun.tools.classfile.StackMapTable_attribute;
    59 import com.sun.tools.classfile.StackMap_attribute;
    60 import com.sun.tools.classfile.Synthetic_attribute;
    62 import static com.sun.tools.classfile.AccessFlags.*;
    64 /*
    65  *  A writer for writing Attributes as text.
    66  *
    67  *  <p><b>This is NOT part of any API supported by Sun Microsystems.  If
    68  *  you write code that depends on this, you do so at your own risk.
    69  *  This code and its internal interfaces are subject to change or
    70  *  deletion without notice.</b>
    71  */
    72 public class AttributeWriter extends BasicWriter
    73         implements Attribute.Visitor<Void,Void>
    74 {
    75     public static AttributeWriter instance(Context context) {
    76         AttributeWriter instance = context.get(AttributeWriter.class);
    77         if (instance == null)
    78             instance = new AttributeWriter(context);
    79         return instance;
    80     }
    82     protected AttributeWriter(Context context) {
    83         super(context);
    84         context.put(AttributeWriter.class, this);
    85         annotationWriter = AnnotationWriter.instance(context);
    86         codeWriter = CodeWriter.instance(context);
    87         constantWriter = ConstantWriter.instance(context);
    88         options = Options.instance(context);
    89     }
    91     public void write(Object owner, Attribute attr, ConstantPool constant_pool) {
    92         if (attr != null) {
    93             // null checks
    94             owner.getClass();
    95             constant_pool.getClass();
    96             this.constant_pool = constant_pool;
    97             this.owner = owner;
    98             attr.accept(this, null);
    99         }
   100     }
   102     public void write(Object owner, Attributes attrs, ConstantPool constant_pool) {
   103         if (attrs != null) {
   104             // null checks
   105             owner.getClass();
   106             constant_pool.getClass();
   107             this.constant_pool = constant_pool;
   108             this.owner = owner;
   109             for (Attribute attr: attrs)
   110                 attr.accept(this, null);
   111         }
   112     }
   114     public Void visitDefault(DefaultAttribute attr, Void ignore) {
   115         byte[] data = attr.info;
   116         int i = 0;
   117         int j = 0;
   118         print("  ");
   119         try {
   120             print(attr.getName(constant_pool));
   121         } catch (ConstantPoolException e) {
   122             report(e);
   123             print("attribute name = #" + attr.attribute_name_index);
   124         }
   125         print(": ");
   126         println("length = 0x" + toHex(attr.info.length));
   128         print("   ");
   130         while (i < data.length) {
   131             print(toHex(data[i], 2));
   133             j++;
   134             if (j == 16) {
   135                 println();
   136                 print("   ");
   137                 j = 0;
   138             } else {
   139                 print(" ");
   140             }
   141             i++;
   142         }
   143         println();
   144         return null;
   145     }
   147     public Void visitAnnotationDefault(AnnotationDefault_attribute attr, Void ignore) {
   148         println("AnnotationDefault:");
   149         indent(+1);
   150         print("default_value: ");
   151         annotationWriter.write(attr.default_value);
   152         indent(-1);
   153         return null;
   154     }
   156     public Void visitCharacterRangeTable(CharacterRangeTable_attribute attr, Void ignore) {
   157         println("CharacterRangeTable:");
   158         indent(+1);
   159         for (int i = 0; i < attr.character_range_table.length; i++) {
   160             CharacterRangeTable_attribute.Entry e = attr.character_range_table[i];
   161             print("    " + e.start_pc + ", " +
   162                     e.end_pc + ", " +
   163                     Integer.toHexString(e.character_range_start) + ", " +
   164                     Integer.toHexString(e.character_range_end) + ", " +
   165                     Integer.toHexString(e.flags));
   166             tab();
   167             print("// ");
   168             print(e.start_pc + ", " +
   169                     e.end_pc + ", " +
   170                     (e.character_range_start >> 10) + ":" + (e.character_range_start & 0x3ff) + ", " +
   171                     (e.character_range_end >> 10) + ":" + (e.character_range_end & 0x3ff));
   172             if ((e.flags & CharacterRangeTable_attribute.CRT_STATEMENT) != 0)
   173                 print(", statement");
   174             if ((e.flags & CharacterRangeTable_attribute.CRT_BLOCK) != 0)
   175                 print(", block");
   176             if ((e.flags & CharacterRangeTable_attribute.CRT_ASSIGNMENT) != 0)
   177                 print(", assignment");
   178             if ((e.flags & CharacterRangeTable_attribute.CRT_FLOW_CONTROLLER) != 0)
   179                 print(", flow-controller");
   180             if ((e.flags & CharacterRangeTable_attribute.CRT_FLOW_TARGET) != 0)
   181                 print(", flow-target");
   182             if ((e.flags & CharacterRangeTable_attribute.CRT_INVOKE) != 0)
   183                 print(", invoke");
   184             if ((e.flags & CharacterRangeTable_attribute.CRT_CREATE) != 0)
   185                 print(", create");
   186             if ((e.flags & CharacterRangeTable_attribute.CRT_BRANCH_TRUE) != 0)
   187                 print(", branch-true");
   188             if ((e.flags & CharacterRangeTable_attribute.CRT_BRANCH_FALSE) != 0)
   189                 print(", branch-false");
   190         }
   191         indent(-1);
   192         return null;
   193     }
   195     public Void visitCode(Code_attribute attr, Void ignore) {
   196         codeWriter.write(attr, constant_pool);
   197         return null;
   198     }
   200     public Void visitCompilationID(CompilationID_attribute attr, Void ignore) {
   201         constantWriter.write(attr.compilationID_index);
   202         return null;
   203     }
   205     public Void visitConstantValue(ConstantValue_attribute attr, Void ignore) {
   206         if (options.compat) // BUG 6622216 javap names some attributes incorrectly
   207             print("Constant value: ");
   208         else
   209             print("ConstantValue: ");
   210         constantWriter.write(attr.constantvalue_index);
   211         println();
   212         return null;
   213     }
   215     public Void visitDeprecated(Deprecated_attribute attr, Void ignore) {
   216         println("Deprecated: true");
   217         return null;
   218     }
   220     public Void visitEnclosingMethod(EnclosingMethod_attribute attr, Void ignore) {
   221         print("EnclosingMethod: #" + attr.class_index + ".#" + attr.method_index);
   222         tab();
   223         print("// " + getJavaClassName(attr));
   224         if (attr.method_index != 0)
   225             print("." + getMethodName(attr));
   226         println();
   227         return null;
   228     }
   230     private String getJavaClassName(EnclosingMethod_attribute a) {
   231         try {
   232             return getJavaName(a.getClassName(constant_pool));
   233         } catch (ConstantPoolException e) {
   234             return report(e);
   235         }
   236     }
   238     private String getMethodName(EnclosingMethod_attribute a) {
   239         try {
   240             return a.getMethodName(constant_pool);
   241         } catch (ConstantPoolException e) {
   242             return report(e);
   243         }
   244     }
   246     public Void visitExceptions(Exceptions_attribute attr, Void ignore) {
   247         println("Exceptions:");
   248         indent(+1);
   249         print("throws ");
   250         for (int i = 0; i < attr.number_of_exceptions; i++) {
   251             if (i > 0)
   252                 print(", ");
   253             print(getJavaException(attr, i));
   254         }
   255         println();
   256         indent(-1);
   257         return null;
   258     }
   260     private String getJavaException(Exceptions_attribute attr, int index) {
   261         try {
   262             return getJavaName(attr.getException(index, constant_pool));
   263         } catch (ConstantPoolException e) {
   264             return report(e);
   265         }
   266     }
   268     public Void visitInnerClasses(InnerClasses_attribute attr, Void ignore) {
   269         boolean first = true;
   270         if (options.compat) {
   271             writeInnerClassHeader();
   272             first = false;
   273         }
   274         for (int i = 0 ; i < attr.classes.length; i++) {
   275             InnerClasses_attribute.Info info = attr.classes[i];
   276             //access
   277             AccessFlags access_flags = info.inner_class_access_flags;
   278             if (options.compat) {
   279                 // BUG 6622215: javap ignores certain relevant access flags
   280                 access_flags = access_flags.ignore(ACC_STATIC | ACC_PROTECTED | ACC_PRIVATE | ACC_INTERFACE | ACC_SYNTHETIC | ACC_ENUM);
   281                 // BUG 6622232: javap gets whitespace confused
   282                 print("   ");
   283             }
   284             if (options.checkAccess(access_flags)) {
   285                 if (first) {
   286                     writeInnerClassHeader();
   287                     first = false;
   288                 }
   289                 print("   ");
   290                 for (String name: access_flags.getInnerClassModifiers())
   291                     print(name + " ");
   292                 if (info.inner_name_index!=0) {
   293                     print("#" + info.inner_name_index + "= ");
   294                 }
   295                 print("#" + info.inner_class_info_index);
   296                 if (info.outer_class_info_index != 0) {
   297                     print(" of #" + info.outer_class_info_index);
   298                 }
   299                 print("; //");
   300                 if (info.inner_name_index != 0) {
   301                     print(getInnerName(constant_pool, info) + "=");
   302                 }
   303                 constantWriter.write(info.inner_class_info_index);
   304                 if (info.outer_class_info_index != 0) {
   305                     print(" of ");
   306                     constantWriter.write(info.outer_class_info_index);
   307                 }
   308                 println();
   309             }
   310         }
   311         if (!first)
   312             indent(-1);
   313         return null;
   314     }
   316     String getInnerName(ConstantPool constant_pool, InnerClasses_attribute.Info info) {
   317         try {
   318             return info.getInnerName(constant_pool);
   319         } catch (ConstantPoolException e) {
   320             return report(e);
   321         }
   322     }
   324     private void writeInnerClassHeader() {
   325         if (options.compat) // BUG 6622216: javap names some attributes incorrectly
   326             print("InnerClass");
   327         else
   328             print("InnerClasses");
   329         println(":");
   330         indent(+1);
   331     }
   333     public Void visitLineNumberTable(LineNumberTable_attribute attr, Void ignore) {
   334         println("LineNumberTable:");
   335         indent(+1);
   336         for (LineNumberTable_attribute.Entry entry: attr.line_number_table) {
   337             println("line " + entry.line_number + ": " + entry.start_pc);
   338         }
   339         indent(-1);
   340         return null;
   341     }
   343     public Void visitLocalVariableTable(LocalVariableTable_attribute attr, Void ignore) {
   344         println("LocalVariableTable:");
   345         indent(+1);
   346         println("Start  Length  Slot  Name   Signature");
   347         for (LocalVariableTable_attribute.Entry entry : attr.local_variable_table) {
   348             Formatter formatter = new Formatter();
   349             println(formatter.format("%8d %7d %5d %5s   %s",
   350                     entry.start_pc, entry.length, entry.index,
   351                     constantWriter.stringValue(entry.name_index),
   352                     constantWriter.stringValue(entry.descriptor_index)));
   353         }
   354         indent(-1);
   355         return null;
   356     }
   358     public Void visitLocalVariableTypeTable(LocalVariableTypeTable_attribute attr, Void ignore) {
   359         println("LocalVariableTypeTable:");
   360         indent(+1);
   361         println("Start  Length  Slot  Name   Signature");
   362         for (LocalVariableTypeTable_attribute.Entry entry : attr.local_variable_table) {
   363             println(String.format("%5d %7d %5d %5s   %s",
   364                     entry.start_pc, entry.length, entry.index,
   365                     constantWriter.stringValue(entry.name_index),
   366                     constantWriter.stringValue(entry.signature_index)));
   367         }
   368         indent(-1);
   369         return null;
   370     }
   372     public Void visitRuntimeVisibleAnnotations(RuntimeVisibleAnnotations_attribute attr, Void ignore) {
   373         println("RuntimeVisibleAnnotations:");
   374         indent(+1);
   375         for (int i = 0; i < attr.annotations.length; i++) {
   376             print(i + ": ");
   377             annotationWriter.write(attr.annotations[i]);
   378             println();
   379         }
   380         indent(-1);
   381         return null;
   382     }
   384     public Void visitRuntimeInvisibleAnnotations(RuntimeInvisibleAnnotations_attribute attr, Void ignore) {
   385         println("RuntimeInvisibleAnnotations:");
   386         indent(+1);
   387         for (int i = 0; i < attr.annotations.length; i++) {
   388             print(i + ": ");
   389             annotationWriter.write(attr.annotations[i]);
   390             println();
   391         }
   392         indent(-1);
   393         return null;
   394     }
   396     public Void visitRuntimeVisibleTypeAnnotations(RuntimeVisibleTypeAnnotations_attribute attr, Void ignore) {
   397         println("RuntimeVisibleTypeAnnotations:");
   398         indent(+1);
   399         for (int i = 0; i < attr.annotations.length; i++) {
   400             print(i + ": ");
   401             annotationWriter.write(attr.annotations[i]);
   402             println();
   403         }
   404         indent(-1);
   405         return null;
   406     }
   408     public Void visitRuntimeInvisibleTypeAnnotations(RuntimeInvisibleTypeAnnotations_attribute attr, Void ignore) {
   409         println("RuntimeInvisibleTypeAnnotations:");
   410         indent(+1);
   411         for (int i = 0; i < attr.annotations.length; i++) {
   412             print(i + ": ");
   413             annotationWriter.write(attr.annotations[i]);
   414             println();
   415         }
   416         indent(-1);
   417         return null;
   418     }
   420     public Void visitRuntimeVisibleParameterAnnotations(RuntimeVisibleParameterAnnotations_attribute attr, Void ignore) {
   421         println("RuntimeVisibleParameterAnnotations:");
   422         indent(+1);
   423         for (int param = 0; param < attr.parameter_annotations.length; param++) {
   424             println("parameter " + param + ": ");
   425             indent(+1);
   426             for (int i = 0; i < attr.parameter_annotations[param].length; i++) {
   427                 print(i + ": ");
   428                 annotationWriter.write(attr.parameter_annotations[param][i]);
   429                 println();
   430             }
   431             indent(-1);
   432         }
   433         indent(-1);
   434         return null;
   435     }
   437     public Void visitRuntimeInvisibleParameterAnnotations(RuntimeInvisibleParameterAnnotations_attribute attr, Void ignore) {
   438         println("RuntimeInvisibleParameterAnnotations:");
   439         indent(+1);
   440         for (int param = 0; param < attr.parameter_annotations.length; param++) {
   441             println(param + ": ");
   442             indent(+1);
   443             for (int i = 0; i < attr.parameter_annotations[param].length; i++) {
   444                 print(i + ": ");
   445                 annotationWriter.write(attr.parameter_annotations[param][i]);
   446                 println();
   447             }
   448             indent(-1);
   449         }
   450         indent(-1);
   451         return null;
   452     }
   454     public Void visitSignature(Signature_attribute attr, Void ignore) {
   455         print("Signature: #" + attr.signature_index);
   456         tab();
   457         println("// " + getSignature(attr));
   458         return null;
   459     }
   461     String getSignature(Signature_attribute info) {
   462         try {
   463             return info.getSignature(constant_pool);
   464         } catch (ConstantPoolException e) {
   465             return report(e);
   466         }
   467     }
   469     public Void visitSourceDebugExtension(SourceDebugExtension_attribute attr, Void ignore) {
   470         println("SourceDebugExtension: " + attr.getValue());
   471         return null;
   472     }
   474     public Void visitSourceFile(SourceFile_attribute attr, Void ignore) {
   475         println("SourceFile: \"" + getSourceFile(attr) + "\"");
   476         return null;
   477     }
   479     private String getSourceFile(SourceFile_attribute attr) {
   480         try {
   481             return attr.getSourceFile(constant_pool);
   482         } catch (ConstantPoolException e) {
   483             return report(e);
   484         }
   485     }
   487     public Void visitSourceID(SourceID_attribute attr, Void ignore) {
   488         constantWriter.write(attr.sourceID_index);
   489         return null;
   490     }
   492     public Void visitStackMap(StackMap_attribute attr, Void ignore) {
   493         println("StackMap: number_of_entries = " + attr.number_of_entries);
   494         indent(+1);
   495         StackMapTableWriter w = new StackMapTableWriter();
   496         for (StackMapTable_attribute.stack_map_frame entry : attr.entries) {
   497             w.write(entry);
   498         }
   499         println();
   500         indent(-1);
   501         return null;
   502     }
   504     public Void visitStackMapTable(StackMapTable_attribute attr, Void ignore) {
   505         println("StackMapTable: number_of_entries = " + attr.number_of_entries);
   506         indent(+1);
   507         StackMapTableWriter w = new StackMapTableWriter();
   508         for (StackMapTable_attribute.stack_map_frame entry : attr.entries) {
   509             w.write(entry);
   510         }
   511         println();
   512         indent(-1);
   513         return null;
   514     }
   516     class StackMapTableWriter // also handles CLDC StackMap attributes
   517             implements StackMapTable_attribute.stack_map_frame.Visitor<Void,Void> {
   518         public void write(StackMapTable_attribute.stack_map_frame frame) {
   519             frame.accept(this, null);
   520         }
   522         public Void visit_same_frame(StackMapTable_attribute.same_frame frame, Void p) {
   523             printHeader(frame);
   524             println(" /* same */");
   525             return null;
   526         }
   528         public Void visit_same_locals_1_stack_item_frame(StackMapTable_attribute.same_locals_1_stack_item_frame frame, Void p) {
   529             printHeader(frame);
   530             println(" /* same_locals_1_stack_item */");
   531             indent(+1);
   532             printMap("stack", frame.stack);
   533             indent(-1);
   534             return null;
   535         }
   537         public Void visit_same_locals_1_stack_item_frame_extended(StackMapTable_attribute.same_locals_1_stack_item_frame_extended frame, Void p) {
   538             printHeader(frame);
   539             println(" /* same_locals_1_stack_item_frame_extended */");
   540             indent(+1);
   541             println("offset_delta = " + frame.offset_delta);
   542             printMap("stack", frame.stack);
   543             indent(-1);
   544             return null;
   545         }
   547         public Void visit_chop_frame(StackMapTable_attribute.chop_frame frame, Void p) {
   548             printHeader(frame);
   549             println(" /* chop */");
   550             indent(+1);
   551             println("offset_delta = " + frame.offset_delta);
   552             indent(-1);
   553             return null;
   554         }
   556         public Void visit_same_frame_extended(StackMapTable_attribute.same_frame_extended frame, Void p) {
   557             printHeader(frame);
   558             println(" /* same_frame_extended */");
   559             indent(+1);
   560             println("offset_delta = " + frame.offset_delta);
   561             indent(-1);
   562             return null;
   563         }
   565         public Void visit_append_frame(StackMapTable_attribute.append_frame frame, Void p) {
   566             printHeader(frame);
   567             println(" /* append */");
   568             println("     offset_delta = " + frame.offset_delta);
   569             printMap("locals", frame.locals);
   570             return null;
   571         }
   573         public Void visit_full_frame(StackMapTable_attribute.full_frame frame, Void p) {
   574             printHeader(frame);
   575             if (frame instanceof StackMap_attribute.stack_map_frame) {
   576                 indent(+1);
   577                 println(" offset = " + frame.offset_delta);
   578             } else {
   579                 println(" /* full_frame */");
   580                 indent(+1);
   581                 println("offset_delta = " + frame.offset_delta);
   582             }
   583             printMap("locals", frame.locals);
   584             printMap("stack", frame.stack);
   585             indent(-1);
   586             return null;
   587         }
   589         void printHeader(StackMapTable_attribute.stack_map_frame frame) {
   590             print("   frame_type = " + frame.frame_type);
   591         }
   593         void printMap(String name, StackMapTable_attribute.verification_type_info[] map) {
   594             print(name + " = [");
   595             for (int i = 0; i < map.length; i++) {
   596                 StackMapTable_attribute.verification_type_info info = map[i];
   597                 int tag = info.tag;
   598                 switch (tag) {
   599                     case StackMapTable_attribute.verification_type_info.ITEM_Object:
   600                         print(" ");
   601                         constantWriter.write(((StackMapTable_attribute.Object_variable_info) info).cpool_index);
   602                         break;
   603                     case StackMapTable_attribute.verification_type_info.ITEM_Uninitialized:
   604                         print(" " + mapTypeName(tag));
   605                         print(" " + ((StackMapTable_attribute.Uninitialized_variable_info) info).offset);
   606                         break;
   607                     default:
   608                         print(" " + mapTypeName(tag));
   609                 }
   610                 print(i == (map.length - 1) ? " " : ",");
   611             }
   612             println("]");
   613         }
   615         String mapTypeName(int tag) {
   616             switch (tag) {
   617             case StackMapTable_attribute.verification_type_info.ITEM_Top:
   618                 return "top";
   620             case StackMapTable_attribute.verification_type_info.ITEM_Integer:
   621                 return "int";
   623             case StackMapTable_attribute.verification_type_info.ITEM_Float:
   624                 return "float";
   626             case StackMapTable_attribute.verification_type_info.ITEM_Long:
   627                 return "long";
   629             case StackMapTable_attribute.verification_type_info.ITEM_Double:
   630                 return "double";
   632             case StackMapTable_attribute.verification_type_info.ITEM_Null:
   633                 return "null";
   635             case StackMapTable_attribute.verification_type_info.ITEM_UninitializedThis:
   636                 return "this";
   638             case StackMapTable_attribute.verification_type_info.ITEM_Object:
   639                 return "CP";
   641             case StackMapTable_attribute.verification_type_info.ITEM_Uninitialized:
   642                 return "uninitialized";
   644             default:
   645                 report("unrecognized verification_type_info tag: " + tag);
   646                 return "[tag:" + tag + "]";
   647             }
   648         }
   649     }
   651     public Void visitSynthetic(Synthetic_attribute attr, Void ignore) {
   652         println("Synthetic: true");
   653         return null;
   654     }
   656     static String getJavaName(String name) {
   657         return name.replace('/', '.');
   658     }
   660     String toHex(byte b, int w) {
   661         if (options.compat) // BUG 6622260: javap prints negative bytes incorrectly in hex
   662             return toHex((int) b, w);
   663         else
   664             return toHex(b & 0xff, w);
   665     }
   667     static String toHex(int i) {
   668         return Integer.toString(i, 16).toUpperCase();
   669     }
   671     static String toHex(int i, int w) {
   672         String s = Integer.toHexString(i).toUpperCase();
   673         while (s.length() < w)
   674             s = "0" + s;
   675         return s.toUpperCase();
   676     }
   678     private AnnotationWriter annotationWriter;
   679     private CodeWriter codeWriter;
   680     private ConstantWriter constantWriter;
   681     private Options options;
   683     private ConstantPool constant_pool;
   684     private Object owner;
   685 }

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