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 }