jdk8-mips64-public/langtools: src/share/classes/com/sun/tools/javap/AttributeWriter.java@31780dd06ec7 (annotated)

src/share/classes/com/sun/tools/javap/AttributeWriter.java@31780dd06ec7 (annotated)

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

Sat, 29 Dec 2012 17:33:17 -0800

author: jjg
date: Sat, 29 Dec 2012 17:33:17 -0800
changeset 1473: 31780dd06ec7
parent 826: 5cf6c432ef2f
child 1521: 71f35e4b93a5
permissions: -rw-r--r--

8004727: Add compiler support for parameter reflection
Reviewed-by: jjg
Contributed-by: eric.mccorkle@oracle.com

 /*
  * Copyright (c) 2007, 2012, 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.javap;
 import java.util.Formatter;
 import com.sun.tools.classfile.AccessFlags;
 import com.sun.tools.classfile.AnnotationDefault_attribute;
 import com.sun.tools.classfile.Attribute;
 import com.sun.tools.classfile.Attributes;
 import com.sun.tools.classfile.BootstrapMethods_attribute;
 import com.sun.tools.classfile.CharacterRangeTable_attribute;
 import com.sun.tools.classfile.Code_attribute;
 import com.sun.tools.classfile.CompilationID_attribute;
 import com.sun.tools.classfile.ConstantPool;
 import com.sun.tools.classfile.ConstantPoolException;
 import com.sun.tools.classfile.ConstantValue_attribute;
 import com.sun.tools.classfile.DefaultAttribute;
 import com.sun.tools.classfile.Deprecated_attribute;
 import com.sun.tools.classfile.EnclosingMethod_attribute;
 import com.sun.tools.classfile.Exceptions_attribute;
 import com.sun.tools.classfile.InnerClasses_attribute;
 import com.sun.tools.classfile.LineNumberTable_attribute;
 import com.sun.tools.classfile.LocalVariableTable_attribute;
 import com.sun.tools.classfile.LocalVariableTypeTable_attribute;
 import com.sun.tools.classfile.MethodParameters_attribute;
 import com.sun.tools.classfile.RuntimeInvisibleAnnotations_attribute;
 import com.sun.tools.classfile.RuntimeInvisibleParameterAnnotations_attribute;
 import com.sun.tools.classfile.RuntimeVisibleAnnotations_attribute;
 import com.sun.tools.classfile.RuntimeVisibleParameterAnnotations_attribute;
 import com.sun.tools.classfile.Signature_attribute;
 import com.sun.tools.classfile.SourceDebugExtension_attribute;
 import com.sun.tools.classfile.SourceFile_attribute;
 import com.sun.tools.classfile.SourceID_attribute;
 import com.sun.tools.classfile.StackMapTable_attribute;
 import com.sun.tools.classfile.StackMap_attribute;
 import com.sun.tools.classfile.Synthetic_attribute;
 import static com.sun.tools.classfile.AccessFlags.*;
 /*
  *  A writer for writing Attributes as text.
  *
  *  <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 class AttributeWriter extends BasicWriter
         implements Attribute.Visitor<Void,Void>
 {
     public static AttributeWriter instance(Context context) {
         AttributeWriter instance = context.get(AttributeWriter.class);
         if (instance == null)
             instance = new AttributeWriter(context);
         return instance;
     }
     protected AttributeWriter(Context context) {
         super(context);
         context.put(AttributeWriter.class, this);
         annotationWriter = AnnotationWriter.instance(context);
         codeWriter = CodeWriter.instance(context);
         constantWriter = ConstantWriter.instance(context);
         options = Options.instance(context);
     }
     public void write(Object owner, Attribute attr, ConstantPool constant_pool) {
         if (attr != null) {
             // null checks
             owner.getClass();
             constant_pool.getClass();
             this.constant_pool = constant_pool;
             this.owner = owner;
             attr.accept(this, null);
         }
     }
     public void write(Object owner, Attributes attrs, ConstantPool constant_pool) {
         if (attrs != null) {
             // null checks
             owner.getClass();
             constant_pool.getClass();
             this.constant_pool = constant_pool;
             this.owner = owner;
             for (Attribute attr: attrs)
                 attr.accept(this, null);
         }
     }
     public Void visitDefault(DefaultAttribute attr, Void ignore) {
         byte[] data = attr.info;
         int i = 0;
         int j = 0;
         print("  ");
         try {
             print(attr.getName(constant_pool));
         } catch (ConstantPoolException e) {
             report(e);
             print("attribute name = #" + attr.attribute_name_index);
         }
         print(": ");
         println("length = 0x" + toHex(attr.info.length));
         print("   ");
         while (i < data.length) {
             print(toHex(data[i], 2));
             j++;
             if (j == 16) {
                 println();
                 print("   ");
                 j = 0;
             } else {
                 print(" ");
             }
             i++;
         }
         println();
         return null;
     }
     public Void visitAnnotationDefault(AnnotationDefault_attribute attr, Void ignore) {
         println("AnnotationDefault:");
         indent(+1);
         print("default_value: ");
         annotationWriter.write(attr.default_value);
         indent(-1);
         return null;
     }
     public Void visitBootstrapMethods(BootstrapMethods_attribute attr, Void p) {
         println(Attribute.BootstrapMethods + ":");
         for (int i = 0; i < attr.bootstrap_method_specifiers.length ; i++) {
             BootstrapMethods_attribute.BootstrapMethodSpecifier bsm = attr.bootstrap_method_specifiers[i];
             indent(+1);
             print(i + ": #" + bsm.bootstrap_method_ref + " ");
             println(constantWriter.stringValue(bsm.bootstrap_method_ref));
             indent(+1);
             println("Method arguments:");
             indent(+1);
             for (int j = 0; j < bsm.bootstrap_arguments.length; j++) {
                 print("#" + bsm.bootstrap_arguments[j] + " ");
                 println(constantWriter.stringValue(bsm.bootstrap_arguments[j]));
             }
             indent(-3);
         }
         return null;
     }
     public Void visitCharacterRangeTable(CharacterRangeTable_attribute attr, Void ignore) {
         println("CharacterRangeTable:");
         indent(+1);
         for (int i = 0; i < attr.character_range_table.length; i++) {
             CharacterRangeTable_attribute.Entry e = attr.character_range_table[i];
             print(String.format("    %2d, %2d, %6x, %6x, %4x",
                     e.start_pc, e.end_pc,
                     e.character_range_start, e.character_range_end,
                     e.flags));
             tab();
             print(String.format("// %2d, %2d, %4d:%02d, %4d:%02d",
                     e.start_pc, e.end_pc,
                     (e.character_range_start >> 10), (e.character_range_start & 0x3ff),
                     (e.character_range_end >> 10), (e.character_range_end & 0x3ff)));
             if ((e.flags & CharacterRangeTable_attribute.CRT_STATEMENT) != 0)
                 print(", statement");
             if ((e.flags & CharacterRangeTable_attribute.CRT_BLOCK) != 0)
                 print(", block");
             if ((e.flags & CharacterRangeTable_attribute.CRT_ASSIGNMENT) != 0)
                 print(", assignment");
             if ((e.flags & CharacterRangeTable_attribute.CRT_FLOW_CONTROLLER) != 0)
                 print(", flow-controller");
             if ((e.flags & CharacterRangeTable_attribute.CRT_FLOW_TARGET) != 0)
                 print(", flow-target");
             if ((e.flags & CharacterRangeTable_attribute.CRT_INVOKE) != 0)
                 print(", invoke");
             if ((e.flags & CharacterRangeTable_attribute.CRT_CREATE) != 0)
                 print(", create");
             if ((e.flags & CharacterRangeTable_attribute.CRT_BRANCH_TRUE) != 0)
                 print(", branch-true");
             if ((e.flags & CharacterRangeTable_attribute.CRT_BRANCH_FALSE) != 0)
                 print(", branch-false");
             println();
         }
         indent(-1);
         return null;
     }
     public Void visitCode(Code_attribute attr, Void ignore) {
         codeWriter.write(attr, constant_pool);
         return null;
     }
     public Void visitCompilationID(CompilationID_attribute attr, Void ignore) {
         constantWriter.write(attr.compilationID_index);
         return null;
     }
     public Void visitConstantValue(ConstantValue_attribute attr, Void ignore) {
         if (options.compat) // BUG 6622216 javap names some attributes incorrectly
             print("Constant value: ");
         else
             print("ConstantValue: ");
         constantWriter.write(attr.constantvalue_index);
         println();
         return null;
     }
     public Void visitDeprecated(Deprecated_attribute attr, Void ignore) {
         println("Deprecated: true");
         return null;
     }
     public Void visitEnclosingMethod(EnclosingMethod_attribute attr, Void ignore) {
         print("EnclosingMethod: #" + attr.class_index + ".#" + attr.method_index);
         tab();
         print("// " + getJavaClassName(attr));
         if (attr.method_index != 0)
             print("." + getMethodName(attr));
         println();
         return null;
     }
     private String getJavaClassName(EnclosingMethod_attribute a) {
         try {
             return getJavaName(a.getClassName(constant_pool));
         } catch (ConstantPoolException e) {
             return report(e);
         }
     }
     private String getMethodName(EnclosingMethod_attribute a) {
         try {
             return a.getMethodName(constant_pool);
         } catch (ConstantPoolException e) {
             return report(e);
         }
     }
     public Void visitExceptions(Exceptions_attribute attr, Void ignore) {
         println("Exceptions:");
         indent(+1);
         print("throws ");
         for (int i = 0; i < attr.number_of_exceptions; i++) {
             if (i > 0)
                 print(", ");
             print(getJavaException(attr, i));
         }
         println();
         indent(-1);
         return null;
     }
     private String getJavaException(Exceptions_attribute attr, int index) {
         try {
             return getJavaName(attr.getException(index, constant_pool));
         } catch (ConstantPoolException e) {
             return report(e);
         }
     }
     public Void visitInnerClasses(InnerClasses_attribute attr, Void ignore) {
         boolean first = true;
         if (options.compat) {
             writeInnerClassHeader();
             first = false;
         }
         for (int i = 0 ; i < attr.classes.length; i++) {
             InnerClasses_attribute.Info info = attr.classes[i];
             //access
             AccessFlags access_flags = info.inner_class_access_flags;
             if (options.compat) {
                 // BUG 6622215: javap ignores certain relevant access flags
                 access_flags = access_flags.ignore(ACC_STATIC | ACC_PROTECTED | ACC_PRIVATE | ACC_INTERFACE | ACC_SYNTHETIC | ACC_ENUM);
                 // BUG 6622232: javap gets whitespace confused
                 print("   ");
             }
             if (options.checkAccess(access_flags)) {
                 if (first) {
                     writeInnerClassHeader();
                     first = false;
                 }
                 print("   ");
                 for (String name: access_flags.getInnerClassModifiers())
                     print(name + " ");
                 if (info.inner_name_index!=0) {
                     print("#" + info.inner_name_index + "= ");
                 }
                 print("#" + info.inner_class_info_index);
                 if (info.outer_class_info_index != 0) {
                     print(" of #" + info.outer_class_info_index);
                 }
                 print("; //");
                 if (info.inner_name_index != 0) {
                     print(getInnerName(constant_pool, info) + "=");
                 }
                 constantWriter.write(info.inner_class_info_index);
                 if (info.outer_class_info_index != 0) {
                     print(" of ");
                     constantWriter.write(info.outer_class_info_index);
                 }
                 println();
             }
         }
         if (!first)
             indent(-1);
         return null;
     }
     String getInnerName(ConstantPool constant_pool, InnerClasses_attribute.Info info) {
         try {
             return info.getInnerName(constant_pool);
         } catch (ConstantPoolException e) {
             return report(e);
         }
     }
     private void writeInnerClassHeader() {
         if (options.compat) // BUG 6622216: javap names some attributes incorrectly
             print("InnerClass");
         else
             print("InnerClasses");
         println(":");
         indent(+1);
     }
     public Void visitLineNumberTable(LineNumberTable_attribute attr, Void ignore) {
         println("LineNumberTable:");
         indent(+1);
         for (LineNumberTable_attribute.Entry entry: attr.line_number_table) {
             println("line " + entry.line_number + ": " + entry.start_pc);
         }
         indent(-1);
         return null;
     }
     public Void visitLocalVariableTable(LocalVariableTable_attribute attr, Void ignore) {
         println("LocalVariableTable:");
         indent(+1);
         println("Start  Length  Slot  Name   Signature");
         for (LocalVariableTable_attribute.Entry entry : attr.local_variable_table) {
             Formatter formatter = new Formatter();
             println(formatter.format("%8d %7d %5d %5s   %s",
                     entry.start_pc, entry.length, entry.index,
                     constantWriter.stringValue(entry.name_index),
                     constantWriter.stringValue(entry.descriptor_index)));
         }
         indent(-1);
         return null;
     }
     public Void visitLocalVariableTypeTable(LocalVariableTypeTable_attribute attr, Void ignore) {
         println("LocalVariableTypeTable:");
         indent(+1);
         println("Start  Length  Slot  Name   Signature");
         for (LocalVariableTypeTable_attribute.Entry entry : attr.local_variable_table) {
             println(String.format("%5d %7d %5d %5s   %s",
                     entry.start_pc, entry.length, entry.index,
                     constantWriter.stringValue(entry.name_index),
                     constantWriter.stringValue(entry.signature_index)));
         }
         indent(-1);
         return null;
     }
     private static final String format = "%-31s%s";
     public Void visitMethodParameters(MethodParameters_attribute attr,
                                       Void ignore) {
         final String header = String.format(format, "Name", "Flags");
         println("MethodParameters:");
         indent(+1);
         println(header);
         for (MethodParameters_attribute.Entry entry :
                  attr.method_parameter_table) {
             String flagstr =
                 (0 != (entry.flags & ACC_FINAL) ? " final" : "") +
                 (0 != (entry.flags & ACC_SYNTHETIC) ? " synthetic" : "");
             println(String.format(format,
                                   constantWriter.stringValue(entry.name_index),
                                   flagstr));
         }
         indent(-1);
         return null;
     }
     public Void visitRuntimeVisibleAnnotations(RuntimeVisibleAnnotations_attribute attr, Void ignore) {
         println("RuntimeVisibleAnnotations:");
         indent(+1);
         for (int i = 0; i < attr.annotations.length; i++) {
             print(i + ": ");
             annotationWriter.write(attr.annotations[i]);
             println();
         }
         indent(-1);
         return null;
     }
     public Void visitRuntimeInvisibleAnnotations(RuntimeInvisibleAnnotations_attribute attr, Void ignore) {
         println("RuntimeInvisibleAnnotations:");
         indent(+1);
         for (int i = 0; i < attr.annotations.length; i++) {
             print(i + ": ");
             annotationWriter.write(attr.annotations[i]);
             println();
         }
         indent(-1);
         return null;
     }
     public Void visitRuntimeVisibleParameterAnnotations(RuntimeVisibleParameterAnnotations_attribute attr, Void ignore) {
         println("RuntimeVisibleParameterAnnotations:");
         indent(+1);
         for (int param = 0; param < attr.parameter_annotations.length; param++) {
             println("parameter " + param + ": ");
             indent(+1);
             for (int i = 0; i < attr.parameter_annotations[param].length; i++) {
                 print(i + ": ");
                 annotationWriter.write(attr.parameter_annotations[param][i]);
                 println();
             }
             indent(-1);
         }
         indent(-1);
         return null;
     }
     public Void visitRuntimeInvisibleParameterAnnotations(RuntimeInvisibleParameterAnnotations_attribute attr, Void ignore) {
         println("RuntimeInvisibleParameterAnnotations:");
         indent(+1);
         for (int param = 0; param < attr.parameter_annotations.length; param++) {
             println(param + ": ");
             indent(+1);
             for (int i = 0; i < attr.parameter_annotations[param].length; i++) {
                 print(i + ": ");
                 annotationWriter.write(attr.parameter_annotations[param][i]);
                 println();
             }
             indent(-1);
         }
         indent(-1);
         return null;
     }
     public Void visitSignature(Signature_attribute attr, Void ignore) {
         print("Signature: #" + attr.signature_index);
         tab();
         println("// " + getSignature(attr));
         return null;
     }
     String getSignature(Signature_attribute info) {
         try {
             return info.getSignature(constant_pool);
         } catch (ConstantPoolException e) {
             return report(e);
         }
     }
     public Void visitSourceDebugExtension(SourceDebugExtension_attribute attr, Void ignore) {
         println("SourceDebugExtension: " + attr.getValue());
         return null;
     }
     public Void visitSourceFile(SourceFile_attribute attr, Void ignore) {
         println("SourceFile: \"" + getSourceFile(attr) + "\"");
         return null;
     }
     private String getSourceFile(SourceFile_attribute attr) {
         try {
             return attr.getSourceFile(constant_pool);
         } catch (ConstantPoolException e) {
             return report(e);
         }
     }
     public Void visitSourceID(SourceID_attribute attr, Void ignore) {
         constantWriter.write(attr.sourceID_index);
         return null;
     }
     public Void visitStackMap(StackMap_attribute attr, Void ignore) {
         println("StackMap: number_of_entries = " + attr.number_of_entries);
         indent(+1);
         StackMapTableWriter w = new StackMapTableWriter();
         for (StackMapTable_attribute.stack_map_frame entry : attr.entries) {
             w.write(entry);
         }
         println();
         indent(-1);
         return null;
     }
     public Void visitStackMapTable(StackMapTable_attribute attr, Void ignore) {
         println("StackMapTable: number_of_entries = " + attr.number_of_entries);
         indent(+1);
         StackMapTableWriter w = new StackMapTableWriter();
         for (StackMapTable_attribute.stack_map_frame entry : attr.entries) {
             w.write(entry);
         }
         println();
         indent(-1);
         return null;
     }
     class StackMapTableWriter // also handles CLDC StackMap attributes
             implements StackMapTable_attribute.stack_map_frame.Visitor<Void,Void> {
         public void write(StackMapTable_attribute.stack_map_frame frame) {
             frame.accept(this, null);
         }
         public Void visit_same_frame(StackMapTable_attribute.same_frame frame, Void p) {
             printHeader(frame);
             println(" /* same */");
             return null;
         }
         public Void visit_same_locals_1_stack_item_frame(StackMapTable_attribute.same_locals_1_stack_item_frame frame, Void p) {
             printHeader(frame);
             println(" /* same_locals_1_stack_item */");
             indent(+1);
             printMap("stack", frame.stack);
             indent(-1);
             return null;
         }
         public Void visit_same_locals_1_stack_item_frame_extended(StackMapTable_attribute.same_locals_1_stack_item_frame_extended frame, Void p) {
             printHeader(frame);
             println(" /* same_locals_1_stack_item_frame_extended */");
             indent(+1);
             println("offset_delta = " + frame.offset_delta);
             printMap("stack", frame.stack);
             indent(-1);
             return null;
         }
         public Void visit_chop_frame(StackMapTable_attribute.chop_frame frame, Void p) {
             printHeader(frame);
             println(" /* chop */");
             indent(+1);
             println("offset_delta = " + frame.offset_delta);
             indent(-1);
             return null;
         }
         public Void visit_same_frame_extended(StackMapTable_attribute.same_frame_extended frame, Void p) {
             printHeader(frame);
             println(" /* same_frame_extended */");
             indent(+1);
             println("offset_delta = " + frame.offset_delta);
             indent(-1);
             return null;
         }
         public Void visit_append_frame(StackMapTable_attribute.append_frame frame, Void p) {
             printHeader(frame);
             println(" /* append */");
             println("     offset_delta = " + frame.offset_delta);
             printMap("locals", frame.locals);
             return null;
         }
         public Void visit_full_frame(StackMapTable_attribute.full_frame frame, Void p) {
             printHeader(frame);
             if (frame instanceof StackMap_attribute.stack_map_frame) {
                 indent(+1);
                 println(" offset = " + frame.offset_delta);
             } else {
                 println(" /* full_frame */");
                 indent(+1);
                 println("offset_delta = " + frame.offset_delta);
             }
             printMap("locals", frame.locals);
             printMap("stack", frame.stack);
             indent(-1);
             return null;
         }
         void printHeader(StackMapTable_attribute.stack_map_frame frame) {
             print("   frame_type = " + frame.frame_type);
         }
         void printMap(String name, StackMapTable_attribute.verification_type_info[] map) {
             print(name + " = [");
             for (int i = 0; i < map.length; i++) {
                 StackMapTable_attribute.verification_type_info info = map[i];
                 int tag = info.tag;
                 switch (tag) {
                     case StackMapTable_attribute.verification_type_info.ITEM_Object:
                         print(" ");
                         constantWriter.write(((StackMapTable_attribute.Object_variable_info) info).cpool_index);
                         break;
                     case StackMapTable_attribute.verification_type_info.ITEM_Uninitialized:
                         print(" " + mapTypeName(tag));
                         print(" " + ((StackMapTable_attribute.Uninitialized_variable_info) info).offset);
                         break;
                     default:
                         print(" " + mapTypeName(tag));
                 }
                 print(i == (map.length - 1) ? " " : ",");
             }
             println("]");
         }
         String mapTypeName(int tag) {
             switch (tag) {
             case StackMapTable_attribute.verification_type_info.ITEM_Top:
                 return "top";
             case StackMapTable_attribute.verification_type_info.ITEM_Integer:
                 return "int";
             case StackMapTable_attribute.verification_type_info.ITEM_Float:
                 return "float";
             case StackMapTable_attribute.verification_type_info.ITEM_Long:
                 return "long";
             case StackMapTable_attribute.verification_type_info.ITEM_Double:
                 return "double";
             case StackMapTable_attribute.verification_type_info.ITEM_Null:
                 return "null";
             case StackMapTable_attribute.verification_type_info.ITEM_UninitializedThis:
                 return "this";
             case StackMapTable_attribute.verification_type_info.ITEM_Object:
                 return "CP";
             case StackMapTable_attribute.verification_type_info.ITEM_Uninitialized:
                 return "uninitialized";
             default:
                 report("unrecognized verification_type_info tag: " + tag);
                 return "[tag:" + tag + "]";
             }
         }
     }
     public Void visitSynthetic(Synthetic_attribute attr, Void ignore) {
         println("Synthetic: true");
         return null;
     }
     static String getJavaName(String name) {
         return name.replace('/', '.');
     }
     String toHex(byte b, int w) {
         if (options.compat) // BUG 6622260: javap prints negative bytes incorrectly in hex
             return toHex((int) b, w);
         else
             return toHex(b & 0xff, w);
     }
     static String toHex(int i) {
         return Integer.toString(i, 16).toUpperCase();
     }
     static String toHex(int i, int w) {
         String s = Integer.toHexString(i).toUpperCase();
         while (s.length() < w)
             s = "0" + s;
         return s.toUpperCase();
     }
     private AnnotationWriter annotationWriter;
     private CodeWriter codeWriter;
     private ConstantWriter constantWriter;
     private Options options;
     private ConstantPool constant_pool;
     private Object owner;
 }

Mercurial > jdk8-mips64-public > langtools / annotate

src/share/classes/com/sun/tools/javap/AttributeWriter.java@31780dd06ec7 (annotated)

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