| /* |
| * ProGuard -- shrinking, optimization, obfuscation, and preverification |
| * of Java bytecode. |
| * |
| * Copyright (c) 2002-2011 Eric Lafortune (eric@graphics.cornell.edu) |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License as published by the Free |
| * Software Foundation; either version 2 of the License, or (at your option) |
| * any later version. |
| * |
| * This program 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 for |
| * more details. |
| * |
| * You should have received a copy of the GNU General Public License along |
| * with this program; if not, write to the Free Software Foundation, Inc., |
| * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| package proguard.classfile.attribute.preverification; |
| |
| import proguard.classfile.*; |
| import proguard.classfile.attribute.*; |
| import proguard.classfile.attribute.preverification.visitor.StackMapFrameVisitor; |
| import proguard.classfile.attribute.visitor.AttributeVisitor; |
| |
| /** |
| * This Attribute represents a stack map table attribute. |
| * |
| * @author Eric Lafortune |
| */ |
| public class StackMapTableAttribute extends Attribute |
| { |
| public int u2stackMapFramesCount; |
| public StackMapFrame[] stackMapFrames; |
| |
| |
| /** |
| * Creates an uninitialized StackMapTableAttribute. |
| */ |
| public StackMapTableAttribute() |
| { |
| } |
| |
| |
| /** |
| * Creates a StackMapTableAttribute with the given stack map frames. |
| */ |
| public StackMapTableAttribute(StackMapFrame[] stackMapFrames) |
| { |
| this(stackMapFrames.length, stackMapFrames); |
| } |
| |
| |
| /** |
| * Creates a StackMapTableAttribute with the given stack map frames. |
| */ |
| public StackMapTableAttribute(int stackMapFramesCount, |
| StackMapFrame[] stackMapFrames) |
| { |
| this.u2stackMapFramesCount = stackMapFramesCount; |
| this.stackMapFrames = stackMapFrames; |
| } |
| |
| |
| // Implementations for Attribute. |
| |
| public void accept(Clazz clazz, Method method, CodeAttribute codeAttribute, AttributeVisitor attributeVisitor) |
| { |
| attributeVisitor.visitStackMapTableAttribute(clazz, method, codeAttribute, this); |
| } |
| |
| |
| /** |
| * Applies the given stack map frame visitor to all stack map frames. |
| */ |
| public void stackMapFramesAccept(Clazz clazz, Method method, CodeAttribute codeAttribute, StackMapFrameVisitor stackMapFrameVisitor) |
| { |
| int offset = 0; |
| |
| for (int index = 0; index < u2stackMapFramesCount; index++) |
| { |
| StackMapFrame stackMapFrame = stackMapFrames[index]; |
| |
| // Note that the byte code offset is computed differently for the |
| // first stack map frame. |
| offset += stackMapFrame.getOffsetDelta() + (index == 0 ? 0 : 1); |
| |
| stackMapFrame.accept(clazz, method, codeAttribute, offset, stackMapFrameVisitor); |
| } |
| } |
| } |