1 /* 2 * Copyright (c) 2010, 2013, 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 jdk.nashorn.internal.codegen.types; 27 28 import jdk.internal.org.objectweb.asm.MethodVisitor; 29 30 /** 31 * Numeric operations, not supported by all types 32 */ 33 interface BytecodeNumericOps { 34 35 /** 36 * Pop and negate the value on top of the stack and push the result 37 * 38 * @param method method visitor 39 * @param programPoint program point id 40 * @return result type 41 */ 42 Type neg(MethodVisitor method, int programPoint); 43 44 /** 45 * Pop two values on top of the stack and subtract the first from the 46 * second, pushing the result on the stack 47 * 48 * @param method method visitor 49 * @param programPoint program point id 50 * @return result type 51 */ 52 Type sub(MethodVisitor method, int programPoint); 53 54 /** 55 * Pop and multiply the two values on top of the stack and push the result 56 * on the stack 57 * 58 * @param method method visitor 59 * @param programPoint program point id 60 * @return result type 61 */ 62 Type mul(MethodVisitor method, int programPoint); 63 64 /** 65 * Pop two values on top of the stack and divide the first with the second, 66 * pushing the result on the stack 67 * 68 * @param method method visitor 69 * @param programPoint program point id 70 * @return result type 71 */ 72 Type div(MethodVisitor method, int programPoint); 73 74 /** 75 * Pop two values on top of the stack and compute the modulo of the first 76 * with the second, pushing the result on the stack 77 * 78 * Note that the rem method never takes a program point, because it 79 * can never be more optimistic than its widest operand - an int/int 80 * rem operation or a long/long rem operation can never return a 81 * winder remainder than the int or the long 82 * 83 * @param method method visitor 84 * @param programPoint program point id 85 * @return result type 86 */ 87 Type rem(MethodVisitor method, int programPoint); 88 89 /** 90 * Comparison with int return value, e.g. LCMP, DCMP. 91 * 92 * @param method the method visitor 93 * @param isCmpG is this a double style cmpg 94 * 95 * @return int return value 96 */ 97 Type cmp(MethodVisitor method, boolean isCmpG); 98 }