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 | +} | |