| /* |
| * Copyright (c) 1994, 2003, 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 sun.tools.asm; |
| |
| import sun.tools.java.*; |
| import java.io.IOException; |
| import java.io.DataOutputStream; |
| |
| /** |
| * A numeric constant pool item. Can either be integer, float, long or double. |
| * |
| * WARNING: The contents of this source file are not part of any |
| * supported API. Code that depends on them does so at its own risk: |
| * they are subject to change or removal without notice. |
| */ |
| final |
| class NumberConstantData extends ConstantPoolData { |
| Number num; |
| |
| /** |
| * Constructor |
| */ |
| NumberConstantData(ConstantPool tab, Number num) { |
| this.num = num; |
| } |
| |
| /** |
| * Write the constant to the output stream |
| */ |
| void write(Environment env, DataOutputStream out, ConstantPool tab) throws IOException { |
| if (num instanceof Integer) { |
| out.writeByte(CONSTANT_INTEGER); |
| out.writeInt(num.intValue()); |
| } else if (num instanceof Long) { |
| out.writeByte(CONSTANT_LONG); |
| out.writeLong(num.longValue()); |
| } else if (num instanceof Float) { |
| out.writeByte(CONSTANT_FLOAT); |
| out.writeFloat(num.floatValue()); |
| } else if (num instanceof Double) { |
| out.writeByte(CONSTANT_DOUBLE); |
| out.writeDouble(num.doubleValue()); |
| } |
| } |
| /** |
| * Return the order of the constant |
| */ |
| int order() { |
| return (width() == 1) ? 0 : 3; |
| } |
| |
| /** |
| * Return the number of entries that it takes up in the constant pool |
| */ |
| int width() { |
| return ((num instanceof Double) || (num instanceof Long)) ? 2 : 1; |
| } |
| } |