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 java.util.ArrayList;
  27 import jdk.test.lib.jittester.IRNode;
  28 import jdk.test.lib.jittester.Literal;
  29 import jdk.test.lib.jittester.ProductionFailedException;
  30 import jdk.test.lib.jittester.ProductionParams;
  31 import jdk.test.lib.jittester.Type;
  32 import jdk.test.lib.jittester.arrays.ArrayCreation;
  33 import jdk.test.lib.jittester.arrays.ArrayElement;
  34 import jdk.test.lib.jittester.arrays.ArrayExtraction;
  35 import jdk.test.lib.jittester.types.TypeArray;
  36 import jdk.test.lib.jittester.types.TypeKlass;
  37 import jdk.test.lib.jittester.types.TypeByte;
  38 import jdk.test.lib.jittester.utils.PseudoRandom;
  39 
  40 class ArrayElementFactory extends SafeFactory {
  41     private final long complexityLimit;
  42     private final int operatorLimit;
  43     private final Type resultType;
  44     private final TypeKlass ownerClass;
  45     private final boolean exceptionSafe;
  46     private final boolean noconsts;
  47 
  48     ArrayElementFactory(long complexityLimit, int operatorLimit, TypeKlass ownerClass,
  49             Type resultType, boolean exceptionSafe, boolean noconsts) {
  50         this.complexityLimit = complexityLimit;
  51         this.operatorLimit = operatorLimit;
  52         this.ownerClass = ownerClass;
  53         this.resultType = resultType;
  54         this.exceptionSafe = exceptionSafe;
  55         this.noconsts = noconsts;
  56     }
  57 
  58     @Override
  59     protected IRNode sproduce() throws ProductionFailedException {
  60         if (resultType instanceof TypeArray) {
  61             throw new ProductionFailedException();
  62         }
  63         long arrayComplexityLimit = (long) (complexityLimit * 0.5 * PseudoRandom.random());
  64         int arrayOperatorLimit = (int) (operatorLimit * 0.5 * PseudoRandom.random());
  65         int dimensionsCount = PseudoRandom.randomNotZero(ProductionParams.dimensionsLimit.value());
  66         long complexityPerDimension = (long) ((complexityLimit - arrayComplexityLimit)
  67                 * PseudoRandom.random()) / dimensionsCount;
  68         int operatorLimitPerDimension = (int) ((operatorLimit - arrayOperatorLimit - dimensionsCount)
  69                 * PseudoRandom.random()) / dimensionsCount;
  70         IRNodeBuilder builder = new IRNodeBuilder().setOwnerKlass(ownerClass)
  71                 .setExceptionSafe(exceptionSafe)
  72                 .setNoConsts(noconsts);
  73         IRNode arrayReturningExpression = builder
  74                 .setComplexityLimit(arrayComplexityLimit)
  75                 .setOperatorLimit(arrayOperatorLimit)
  76                 .setResultType(new TypeArray(resultType, dimensionsCount))
  77                 .getExpressionFactory()
  78                 .produce();
  79         ExpressionFactory expressionFactory = builder
  80                 .setComplexityLimit(complexityPerDimension)
  81                 .setOperatorLimit(operatorLimitPerDimension)
  82                 .setResultType(new TypeByte())
  83                 .getExpressionFactory();
  84         double chanceExpression = ProductionParams.chanceExpressionIndex.value() / 100.;
  85         ArrayList<IRNode> perDimensionExpressions = new ArrayList<>(dimensionsCount);
  86         for (int i = 0; i < dimensionsCount; i++) {
  87             if (PseudoRandom.randomBoolean(chanceExpression)) {
  88                 perDimensionExpressions.add(expressionFactory.produce());
  89             } else {
  90                 byte dimLimit = 0;
  91                 if (arrayReturningExpression instanceof ArrayCreation) {
  92                     ArrayCreation arrayCreation = (ArrayCreation) arrayReturningExpression;
  93                     dimLimit = arrayCreation.getDimensionSize(i);
  94                 } else if (arrayReturningExpression instanceof ArrayExtraction) {
  95                     ArrayExtraction arrayExtraction = (ArrayExtraction) arrayReturningExpression;
  96                     if (i < arrayExtraction.getDimsNumber())
  97                         dimLimit = arrayExtraction.getDim(i);
  98                 }
  99                 perDimensionExpressions.add(new Literal(PseudoRandom.randomNotNegative(dimLimit), new TypeByte()));
 100             }
 101         }
 102         return new ArrayElement(arrayReturningExpression, perDimensionExpressions);
 103     }
 104 }