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.BinaryOperator;
  28 import jdk.test.lib.jittester.IRNode;
  29 import jdk.test.lib.jittester.OperatorKind;
  30 import jdk.test.lib.jittester.ProductionFailedException;
  31 import jdk.test.lib.jittester.Type;
  32 import jdk.test.lib.jittester.TypeList;
  33 import jdk.test.lib.jittester.TypeUtil;
  34 import jdk.test.lib.jittester.types.TypeKlass;
  35 import jdk.test.lib.jittester.types.TypeBoolean;
  36 import jdk.test.lib.jittester.utils.PseudoRandom;
  37 
  38 class CompoundShiftAssignmentOperatorFactory extends BinaryOperatorFactory {
  39     CompoundShiftAssignmentOperatorFactory(OperatorKind opKind, long complexityLimit,
  40             int operatorLimit, TypeKlass ownerClass, Type resultType, boolean exceptionSafe, boolean noconsts) {
  41         super(opKind, complexityLimit, operatorLimit, ownerClass, resultType, exceptionSafe, noconsts);
  42     }
  43 
  44     @Override
  45     protected boolean isApplicable(Type resultType) {
  46         return TypeList.isBuiltInInt(resultType) && !resultType.equals(new TypeBoolean());
  47     }
  48 
  49     @Override
  50     protected Pair<Type, Type> generateTypes() throws ProductionFailedException {
  51         return new Pair<>(resultType, PseudoRandom.randomElement(
  52                 TypeUtil.getExplicitlyCastable(TypeList.getBuiltInInt(), resultType)));
  53     }
  54 
  55     @Override
  56     protected BinaryOperator generateProduction(Type leftType, Type rightType) throws ProductionFailedException {
  57         long leftComplexityLimit = (long) (PseudoRandom.random() * complexityLimit);
  58         long rightComplexityLimit = complexityLimit - leftComplexityLimit;
  59         int leftOperatorLimit = (int) (PseudoRandom.random() * operatorLimit);
  60         int rightOperatorLimit = operatorLimit = leftOperatorLimit;
  61         IRNodeBuilder builder = new IRNodeBuilder().setOwnerKlass((TypeKlass) ownerClass)
  62                 .setExceptionSafe(exceptionSafe)
  63                 .setNoConsts(noconsts);
  64         IRNode leftExpr = builder.setComplexityLimit(leftComplexityLimit)
  65                 .setOperatorLimit(leftOperatorLimit)
  66                 .setResultType(leftType)
  67                 .setIsConstant(false)
  68                 .setIsInitialized(true)
  69                 .getVariableFactory()
  70                 .produce();
  71         IRNode rightExpr = builder.setComplexityLimit(rightComplexityLimit)
  72                 .setOperatorLimit(rightOperatorLimit)
  73                 .setResultType(rightType)
  74                 .getExpressionFactory()
  75                 .produce();
  76         return new BinaryOperator(opKind, leftExpr, rightExpr);
  77     }
  78 }