jdk8-mips64-public/langtools: src/share/classes/sun/tools/javap/StackMapTableData.java@eaf608c64fec (annotated)

src/share/classes/sun/tools/javap/StackMapTableData.java@eaf608c64fec (annotated)

src/share/classes/sun/tools/javap/StackMapTableData.java

Wed, 02 Jul 2008 12:56:02 -0700

author: xdono
date: Wed, 02 Jul 2008 12:56:02 -0700
changeset 54: eaf608c64fec
parent 1: 9a66ca7c79fa
permissions: -rw-r--r--

6719955: Update copyright year
Summary: Update copyright year for files that have been modified in 2008
Reviewed-by: ohair, tbell

 /*
  * Copyright 2005 Sun Microsystems, Inc.  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.  Sun designates this
  * particular file as subject to the "Classpath" exception as provided
  * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  * CA 95054 USA or visit www.sun.com if you need additional information or
  * have any questions.
  */
 package sun.tools.javap;
 import java.util.*;
 import java.io.*;
 import static sun.tools.javap.RuntimeConstants.*;
 /* represents one entry of StackMapTable attribute
  */
 class StackMapTableData {
     final int frameType;
     int offsetDelta;
     StackMapTableData(int frameType) {
         this.frameType = frameType;
     }
     void print(JavapPrinter p) {
         p.out.print("   frame_type = " + frameType);
     }
     static class SameFrame extends StackMapTableData {
         SameFrame(int frameType, int offsetDelta) {
             super(frameType);
             this.offsetDelta = offsetDelta;
         }
         void print(JavapPrinter p) {
             super.print(p);
             if (frameType < SAME_FRAME_BOUND) {
                 p.out.println(" /* same */");
             } else {
                 p.out.println(" /* same_frame_extended */");
                 p.out.println("     offset_delta = " + offsetDelta);
             }
         }
     }
     static class SameLocals1StackItem extends StackMapTableData {
         final int[] stack;
         SameLocals1StackItem(int frameType, int offsetDelta, int[] stack) {
             super(frameType);
             this.offsetDelta = offsetDelta;
             this.stack = stack;
         }
         void print(JavapPrinter p) {
             super.print(p);
             if (frameType == SAME_LOCALS_1_STACK_ITEM_EXTENDED) {
                 p.out.println(" /* same_locals_1_stack_item_frame_extended */");
                 p.out.println("     offset_delta = " + offsetDelta);
             } else {
                 p.out.println(" /* same_locals_1_stack_item */");
             }
             p.printMap("     stack = [", stack);
         }
     }
     static class ChopFrame extends StackMapTableData {
         ChopFrame(int frameType, int offsetDelta) {
             super(frameType);
             this.offsetDelta = offsetDelta;
         }
         void print(JavapPrinter p) {
             super.print(p);
             p.out.println(" /* chop */");
             p.out.println("     offset_delta = " + offsetDelta);
         }
     }
     static class AppendFrame extends StackMapTableData {
         final int[] locals;
         AppendFrame(int frameType, int offsetDelta, int[] locals) {
             super(frameType);
             this.offsetDelta = offsetDelta;
             this.locals = locals;
         }
         void print(JavapPrinter p) {
             super.print(p);
             p.out.println(" /* append */");
             p.out.println("     offset_delta = " + offsetDelta);
             p.printMap("     locals = [", locals);
         }
     }
     static class FullFrame extends StackMapTableData {
         final int[] locals;
         final int[] stack;
         FullFrame(int offsetDelta, int[] locals, int[] stack) {
             super(FULL_FRAME);
             this.offsetDelta = offsetDelta;
             this.locals = locals;
             this.stack = stack;
         }
         void print(JavapPrinter p) {
             super.print(p);
             p.out.println(" /* full_frame */");
             p.out.println("     offset_delta = " + offsetDelta);
             p.printMap("     locals = [", locals);
             p.printMap("     stack = [", stack);
         }
     }
     static StackMapTableData getInstance(DataInputStream in, MethodData method)
                   throws IOException {
         int frameType = in.readUnsignedByte();
         if (frameType < SAME_FRAME_BOUND) {
             // same_frame
             return new SameFrame(frameType, frameType);
         } else if (SAME_FRAME_BOUND <= frameType && frameType < SAME_LOCALS_1_STACK_ITEM_BOUND) {
             // same_locals_1_stack_item_frame
             // read additional single stack element
             return new SameLocals1StackItem(frameType,
                                             (frameType - SAME_FRAME_BOUND),
                                             StackMapData.readTypeArray(in, 1, method));
         } else if (frameType == SAME_LOCALS_1_STACK_ITEM_EXTENDED) {
             // same_locals_1_stack_item_extended
             return new SameLocals1StackItem(frameType,
                                             in.readUnsignedShort(),
                                             StackMapData.readTypeArray(in, 1, method));
         } else if (SAME_LOCALS_1_STACK_ITEM_EXTENDED < frameType  && frameType < SAME_FRAME_EXTENDED) {
             // chop_frame or same_frame_extended
             return new ChopFrame(frameType, in.readUnsignedShort());
         } else if (frameType == SAME_FRAME_EXTENDED) {
             // chop_frame or same_frame_extended
             return new SameFrame(frameType, in.readUnsignedShort());
         } else if (SAME_FRAME_EXTENDED < frameType  && frameType < FULL_FRAME) {
             // append_frame
             return new AppendFrame(frameType, in.readUnsignedShort(),
                                    StackMapData.readTypeArray(in, frameType - SAME_FRAME_EXTENDED, method));
         } else if (frameType == FULL_FRAME) {
             // full_frame
             int offsetDelta = in.readUnsignedShort();
             int locals_size = in.readUnsignedShort();
             int[] locals = StackMapData.readTypeArray(in, locals_size, method);
             int stack_size = in.readUnsignedShort();
             int[] stack = StackMapData.readTypeArray(in, stack_size, method);
             return new FullFrame(offsetDelta, locals, stack);
         } else {
             throw new ClassFormatError("unrecognized frame_type in StackMapTable");
         }
     }
 }

Mercurial > jdk8-mips64-public > langtools / annotate

src/share/classes/sun/tools/javap/StackMapTableData.java@eaf608c64fec (annotated)

src/share/classes/sun/tools/javap/StackMapTableData.java