1 /*
   2  * Copyright (c) 2015, 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.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 package jdk.test.lib.jittester.factories;
  25 
  26 import jdk.test.lib.Pair;
  27 import jdk.test.lib.jittester.BuiltInType;
  28 import jdk.test.lib.jittester.OperatorKind;
  29 import jdk.test.lib.jittester.ProductionFailedException;
  30 import jdk.test.lib.jittester.Type;
  31 import jdk.test.lib.jittester.TypeList;
  32 import jdk.test.lib.jittester.utils.TypeUtil;
  33 import jdk.test.lib.jittester.types.TypeInt;
  34 import jdk.test.lib.jittester.types.TypeKlass;
  35 import jdk.test.lib.jittester.utils.PseudoRandom;
  36 
  37 import java.util.Collection;
  38 
  39 class BinaryArithmeticOperatorFactory extends BinaryOperatorFactory {
  40     BinaryArithmeticOperatorFactory(OperatorKind opKind, long complexityLimit, int operatorLimit,
  41             TypeKlass ownerClass, Type resultType, boolean exceptionSafe, boolean noconsts) {
  42         super(opKind, complexityLimit, operatorLimit, ownerClass, resultType, exceptionSafe, noconsts);
  43     }
  44 
  45     @Override
  46     protected boolean isApplicable(Type resultType) {
  47         // arithmetic for built-in types less capacious than "int" is not supported.
  48         if (TypeList.isBuiltIn(resultType)) {
  49             BuiltInType builtInType = (BuiltInType) resultType;
  50             return builtInType.equals(new TypeInt()) || builtInType.isMoreCapaciousThan(new TypeInt());
  51         } else {
  52             return false;
  53         }
  54     }
  55 
  56     @Override
  57     protected Pair<Type, Type> generateTypes() throws ProductionFailedException {
  58         Collection<Type> castableFromResultType = TypeUtil.getImplicitlyCastable(TypeList.getBuiltIn(), resultType);
  59         // built-in types less capacious than int are automatically casted to int in arithmetic.
  60         final Type leftType = PseudoRandom.randomElement(castableFromResultType);
  61         final Type rightType = resultType.equals(new TypeInt()) ?
  62                 PseudoRandom.randomElement(castableFromResultType) : resultType;
  63         //TODO: is there sense to swap them randomly as it was done in original code?
  64         return PseudoRandom.randomBoolean() ? new Pair<>(leftType, rightType) : new Pair<>(rightType, leftType);
  65     }
  66 }