Showing the changes to java/pkg/sun/tools/asm/NumberConstantData.java (1 of 18352 files). Show all
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| 1 | /* | ||
| 2 | * Copyright (c) 1994, 2003, Oracle and/or its affiliates. All rights reserved. | ||
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| 4 | * | ||
| 5 | * This code is free software; you can redistribute it and/or modify it | ||
| 6 | * under the terms of the GNU General Public License version 2 only, as | ||
| 7 | * published by the Free Software Foundation. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle in the LICENSE file that accompanied this code. | ||
| 10 | * | ||
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| 14 | * version 2 for more details (a copy is included in the LICENSE file that | ||
| 15 | * accompanied this code). | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU General Public License version | ||
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, | ||
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| 20 | * | ||
| 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * questions. | ||
| 24 | */ | ||
| 25 | |||
| 26 | package sun.tools.asm; | ||
| 27 | |||
| 28 | import sun.tools.java.*; | ||
| 29 | import java.io.IOException; | ||
| 30 | import java.io.DataOutputStream; | ||
| 31 | |||
| 32 | /** | ||
| 33 | * A numeric constant pool item. Can either be integer, float, long or double. | ||
| 34 | * | ||
| 35 | * WARNING: The contents of this source file are not part of any | ||
| 36 | * supported API. Code that depends on them does so at its own risk: | ||
| 37 | * they are subject to change or removal without notice. | ||
| 38 | */ | ||
| 39 | final | ||
| 40 | class NumberConstantData extends ConstantPoolData { | ||
| 41 | Number num; | ||
| 42 | |||
| 43 | /** | ||
| 44 | * Constructor | ||
| 45 | */ | ||
| 46 | NumberConstantData(ConstantPool tab, Number num) { | ||
| 47 | this.num = num; | ||
| 48 | } | ||
| 49 | |||
| 50 | /** | ||
| 51 | * Write the constant to the output stream | ||
| 52 | */ | ||
| 53 | void write(Environment env, DataOutputStream out, ConstantPool tab) throws IOException { | ||
| 54 | if (num instanceof Integer) { | ||
| 55 | out.writeByte(CONSTANT_INTEGER); | ||
| 56 | out.writeInt(num.intValue()); | ||
| 57 | } else if (num instanceof Long) { | ||
| 58 | out.writeByte(CONSTANT_LONG); | ||
| 59 | out.writeLong(num.longValue()); | ||
| 60 | } else if (num instanceof Float) { | ||
| 61 | out.writeByte(CONSTANT_FLOAT); | ||
| 62 | out.writeFloat(num.floatValue()); | ||
| 63 | } else if (num instanceof Double) { | ||
| 64 | out.writeByte(CONSTANT_DOUBLE); | ||
| 65 | out.writeDouble(num.doubleValue()); | ||
| 66 | } | ||
| 67 | } | ||
| 68 | /** | ||
| 69 | * Return the order of the constant | ||
| 70 | */ | ||
| 71 | int order() { | ||
| 72 | return (width() == 1) ? 0 : 3; | ||
| 73 | } | ||
| 74 | |||
| 75 | /** | ||
| 76 | * Return the number of entries that it takes up in the constant pool | ||
| 77 | */ | ||
| 78 | int width() { | ||
| 79 | return ((num instanceof Double) || (num instanceof Long)) ? 2 : 1; | ||
| 80 | } | ||
| 81 | } | ||