com.sun.jdo.api.persistence.enhancer.classfile.InsnIInc Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of payara-micro Show documentation
Show all versions of payara-micro Show documentation
Micro Distribution of the Payara Project
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package com.sun.jdo.api.persistence.enhancer.classfile;
import java.io.PrintStream;
/**
* Special instruction form for the opc_iinc instruction
*/
public class InsnIInc extends Insn {
/* The local variable slot to be incremented */
private int localVarIndex;
/* The amount by which the slot is to be incremented */
private int value;
/* public accessors */
public int nStackArgs() {
return 0;
}
public int nStackResults() {
return 0;
}
/**
* What are the types of the stack operands ?
*/
public String argTypes() {
return "";//NOI18N
}
/**
* What are the types of the stack results?
*/
public String resultTypes() {
return "";//NOI18N
}
public boolean branches() {
return false;
}
/**
* The local variable slot to be incremented
*/
public int varIndex() {
return localVarIndex;
}
/**
* The amount by which the slot is to be incremented
*/
public int incrValue() {
return value;
}
/**
* Constructor for opc_iinc instruction
*/
public InsnIInc (int localVarIndex, int value) {
this(localVarIndex, value, NO_OFFSET);
}
/* package local methods */
InsnIInc (int localVarIndex, int value, int pc) {
super(opc_iinc, pc);
this.localVarIndex = localVarIndex;
this.value =value;
}
void print (PrintStream out, int indent) {
ClassPrint.spaces(out, indent);
out.println(offset() + " opc_iinc " + //NOI18N
localVarIndex + "," + value);//NOI18N
}
int store(byte[] buf, int index) {
if (isWide())
buf[index++] = (byte) opc_wide;
buf[index++] = (byte) opcode();
if (isWide()) {
index = storeShort(buf, index, (short) localVarIndex);
index = storeShort(buf, index, (short) value);
} else {
buf[index++] = (byte)localVarIndex;
buf[index++] = (byte)value;
}
return index;
}
int size() {
return isWide() ? 6 : 3;
}
private boolean isWide() {
return (value > 127 || value < -128 || localVarIndex > 255);
}
}