1 /* 2 * Copyright (c) 1998, 2000, 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 com.sun.jdi; 27 28 /** 29 * The value assigned to a field or variable of primitive type in a 30 * target VM. Each primitive values is accessed through a subinterface 31 * of this interface. 32 * 33 * @author Robert Field 34 * @author Gordon Hirsch 35 * @author James McIlree 36 * @since 1.3 37 */ 38 public interface PrimitiveValue extends Value 39 { 40 /** 41 * Converts this value to a BooleanValue and returns the result 42 * as a boolean. 43 * 44 * @return <code>true</code> if this value is non-zero (or 45 * <code>true</code> if already a BooleanValue); false otherwise. 46 */ 47 boolean booleanValue(); 48 49 /** 50 * Converts this value to a ByteValue and returns the result 51 * as a byte. The value will be narrowed as 52 * necessary, and magnitude or precision information 53 * may be lost (as if the primitive had been cast to a byte). 54 * 55 * @return the value, converted to byte 56 */ 57 byte byteValue(); 58 59 /** 60 * Converts this value to a CharValue and returns the result 61 * as a char. The value will be narrowed or widened as 62 * necessary, and magnitude or precision information 63 * may be lost (as if the primitive had been cast to a char, 64 * in the narrowing case). 65 * 66 * @return the value, converted to char 67 */ 68 char charValue(); 69 70 /** 71 * Converts this value to a ShortValue and returns the result 72 * as a short. The value will be narrowed or widened as 73 * necessary, and magnitude or precision information 74 * may be lost (as if the primitive had been cast to a short, 75 * in the narrowing case). 76 * 77 * @return the value, converted to short 78 */ 79 short shortValue(); 80 81 /** 82 * Converts this value to an IntegerValue and returns the result 83 * as an int. The value will be narrowed or widened as 84 * necessary, and magnitude or precision information 85 * may be lost (as if the primitive had been cast to an int, 86 * in the narrowing case). 87 * 88 * @return the value, converted to int 89 */ 90 int intValue(); 91 92 /** 93 * Converts this value to a LongValue and returns the result 94 * as a long. The value will be narrowed or widened as 95 * necessary, and magnitude or precision information 96 * may be lost (as if the primitive had been cast to a long, 97 * in the narrowing case). 98 * 99 * @return the value, converted to long 100 */ 101 long longValue(); 102 103 /** 104 * Converts this value to a FloatValue and returns the result 105 * as a float. The value will be narrowed or widened as 106 * necessary, and magnitude or precision information 107 * may be lost (as if the primitive had been cast to a float, 108 * in the narrowing case). 109 * 110 * @return the value, converted to float 111 */ 112 float floatValue(); 113 114 /** 115 * Converts this value to a DoubleValue and returns the result 116 * as a double. The value will be widened as 117 * necessary, and precision information 118 * may be lost. 119 * 120 * @return the value, converted to double 121 */ 122 double doubleValue(); 123 }