1 /** 2 * ASM: a very small and fast Java bytecode manipulation framework 3 * Copyright (c) 2000-2005 INRIA, France Telecom 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. Neither the name of the copyright holders nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 28 * THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 package org.objectweb.asm.attrs; 31 32 import java.util.List; 33 34 import org.objectweb.asm.Label; 35 36 /** 37 * Holds the state of the stack and local variables for a single execution 38 * branch. 39 * 40 * <i>Note that Long and Double types are represented by two entries in locals 41 * and stack. Second entry should be always of type Top.</i> 42 * 43 * @see <a href="http://www.jcp.org/en/jsr/detail?id=139">JSR 139 : Connected 44 * Limited Device Configuration 1.1</a> 45 * 46 * @see "ClassFileFormat-Java6.fm Page 138 Friday, April 15, 2005 3:22 PM" 47 * 48 * @author Eugene Kuleshov 49 */ 50 public class StackMapFrame { 51 52 /** 53 * A <code>Label</code> for frame offset within method bytecode. 54 */ 55 public Label label; 56 57 /** 58 * A List of <code>StackMapType</code> instances that represent locals for 59 * this frame. 60 */ 61 public List locals; 62 63 /** 64 * A List of <code>StackMapType</code> instances that represent stack for 65 * this frame. 66 */ 67 public List stack; 68 StackMapFrame(Label label, List locals, List stack)69 public StackMapFrame(Label label, List locals, List stack) { 70 this.label = label; 71 this.locals = locals; 72 this.stack = stack; 73 } 74 toString()75 public String toString() { 76 StringBuffer sb = new StringBuffer("Frame:L"); 77 sb.append(System.identityHashCode(label)); 78 sb.append(" locals").append(locals); 79 sb.append(" stack").append(stack); 80 return sb.toString(); 81 } 82 } 83