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.jittester.IRNode;
  27 import jdk.test.lib.jittester.ProductionFailedException;
  28 import jdk.test.lib.jittester.SymbolTable;
  29 import jdk.test.lib.jittester.TernaryOperator;
  30 import jdk.test.lib.jittester.Type;
  31 import jdk.test.lib.jittester.TypeList;
  32 import jdk.test.lib.jittester.types.TypeKlass;
  33 import jdk.test.lib.jittester.utils.PseudoRandom;
  34 
  35 class TernaryOperatorFactory extends OperatorFactory<TernaryOperator> {
  36     private final Type resultType;
  37     private final TypeKlass ownerClass;
  38 
  39     TernaryOperatorFactory(long complexityLimit, int operatorLimit, TypeKlass ownerClass,
  40             Type resultType, boolean exceptionSafe, boolean noconsts) {
  41         super(2, complexityLimit, operatorLimit, exceptionSafe, noconsts);
  42         this.resultType = resultType;
  43         this.ownerClass = ownerClass;
  44     }
  45 
  46     private TernaryOperator generateProduction() throws ProductionFailedException {
  47         int leftOpLimit = (int) (PseudoRandom.random() * 0.3 * (operatorLimit - 1));
  48         int rightOpLimit = (int) (PseudoRandom.random() * 0.3 * (operatorLimit - 1));
  49         int condOpLimit = operatorLimit - 1 - leftOpLimit - rightOpLimit;
  50         long leftComplLimit = (long) (PseudoRandom.random() * 0.3 * (complexityLimit - 1));
  51         long rightComplLimit = (long) (PseudoRandom.random() * 0.3 * (complexityLimit - 1));
  52         long condComplLimit = complexityLimit - 1 - leftComplLimit - rightComplLimit;
  53         if (leftComplLimit == 0 || rightComplLimit == 0 || condComplLimit == 0
  54                 || leftOpLimit == 0 || rightOpLimit == 0 || condOpLimit == 0) {
  55             throw new ProductionFailedException();
  56         }
  57         IRNodeBuilder builder = new IRNodeBuilder().setOwnerKlass(ownerClass)
  58                 .setExceptionSafe(exceptionSafe);
  59         IRNode conditionalExp = builder.setComplexityLimit(condComplLimit)
  60                 .setOperatorLimit(condOpLimit)
  61                 .setResultType(TypeList.BOOLEAN)
  62                 .setNoConsts(noconsts)
  63                 .getExpressionFactory()
  64                 .produce();
  65         // Ignore initializations performed in left and right branches:
  66         IRNode leftExp;
  67         SymbolTable.push();
  68         try {
  69             leftExp = builder.setComplexityLimit(leftComplLimit)
  70                     .setOperatorLimit(leftOpLimit)
  71                     .setResultType(resultType)
  72                     .setNoConsts(false)
  73                     .getExpressionFactory()
  74                     .produce();
  75         } finally {
  76             SymbolTable.pop();
  77         }
  78         IRNode rightExp;
  79         SymbolTable.push();
  80         try {
  81             rightExp = builder.setComplexityLimit(rightComplLimit)
  82                     .setOperatorLimit(rightOpLimit)
  83                     .setResultType(resultType)
  84                     .setNoConsts(false)
  85                     .getExpressionFactory()
  86                     .produce();
  87         } finally {
  88             SymbolTable.pop();
  89         }
  90         return new TernaryOperator(conditionalExp, leftExp, rightExp);
  91     }
  92 
  93     @Override
  94     public TernaryOperator produce() throws ProductionFailedException {
  95         try {
  96             SymbolTable.push();
  97             TernaryOperator result = generateProduction();
  98             SymbolTable.merge();
  99             return result;
 100         } catch (ProductionFailedException e) {
 101             SymbolTable.pop();
 102             throw e;
 103         }
 104     }
 105 }