ArrayElementFactory.java

/*
 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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package jdk.test.lib.jittester.factories;

import java.util.ArrayList;
import jdk.test.lib.jittester.IRNode;
import jdk.test.lib.jittester.Literal;
import jdk.test.lib.jittester.ProductionFailedException;
import jdk.test.lib.jittester.ProductionParams;
import jdk.test.lib.jittester.Type;
import jdk.test.lib.jittester.TypeList;
import jdk.test.lib.jittester.arrays.ArrayCreation;
import jdk.test.lib.jittester.arrays.ArrayElement;
import jdk.test.lib.jittester.arrays.ArrayExtraction;
import jdk.test.lib.jittester.types.TypeArray;
import jdk.test.lib.jittester.types.TypeKlass;
import jdk.test.lib.jittester.utils.PseudoRandom;

class ArrayElementFactory extends SafeFactory<ArrayElement> {
    private final long complexityLimit;
    private final int operatorLimit;
    private final Type resultType;
    private final TypeKlass ownerClass;
    private final boolean exceptionSafe;
    private final boolean noconsts;

    ArrayElementFactory(long complexityLimit, int operatorLimit, TypeKlass ownerClass,
            Type resultType, boolean exceptionSafe, boolean noconsts) {
        this.complexityLimit = complexityLimit;
        this.operatorLimit = operatorLimit;
        this.ownerClass = ownerClass;
        this.resultType = resultType;
        this.exceptionSafe = exceptionSafe;
        this.noconsts = noconsts;
    }

    @Override
    protected ArrayElement sproduce() throws ProductionFailedException {
        if (resultType instanceof TypeArray) {
            throw new ProductionFailedException();
        }
        long arrayComplexityLimit = (long) (complexityLimit * 0.5 * PseudoRandom.random());
        int arrayOperatorLimit = (int) (operatorLimit * 0.5 * PseudoRandom.random());
        int dimensionsCount = PseudoRandom.randomNotZero(ProductionParams.dimensionsLimit.value());
        long complexityPerDimension = (long) ((complexityLimit - arrayComplexityLimit)
                * PseudoRandom.random()) / dimensionsCount;
        int operatorLimitPerDimension = (int) ((operatorLimit - arrayOperatorLimit - dimensionsCount)
                * PseudoRandom.random()) / dimensionsCount;
        IRNodeBuilder builder = new IRNodeBuilder().setOwnerKlass(ownerClass)
                .setExceptionSafe(exceptionSafe)
                .setNoConsts(noconsts);
        IRNode arrayReturningExpression = builder
                .setComplexityLimit(arrayComplexityLimit)
                .setOperatorLimit(arrayOperatorLimit)
                .setResultType(new TypeArray(resultType, dimensionsCount))
                .getExpressionFactory()
                .produce();
        Factory<IRNode> expressionFactory = builder
                .setComplexityLimit(complexityPerDimension)
                .setOperatorLimit(operatorLimitPerDimension)
                .setResultType(TypeList.BYTE)
                .getExpressionFactory();
        double chanceExpression = ProductionParams.chanceExpressionIndex.value() / 100.;
        ArrayList<IRNode> perDimensionExpressions = new ArrayList<>(dimensionsCount);
        for (int i = 0; i < dimensionsCount; i++) {
            if (PseudoRandom.randomBoolean(chanceExpression)) {
                perDimensionExpressions.add(expressionFactory.produce());
            } else {
                byte dimLimit = 0;
                if (arrayReturningExpression instanceof ArrayCreation) {
                    ArrayCreation arrayCreation = (ArrayCreation) arrayReturningExpression;
                    dimLimit = arrayCreation.getDimensionSize(i);
                } else if (arrayReturningExpression instanceof ArrayExtraction) {
                    ArrayExtraction arrayExtraction = (ArrayExtraction) arrayReturningExpression;
                    if (i < arrayExtraction.getDimsNumber())
                        dimLimit = arrayExtraction.getDim(i);
                }
                perDimensionExpressions.add(new Literal((byte)PseudoRandom.randomNotNegative(dimLimit), TypeList.BYTE));
            }
        }
        return new ArrayElement(arrayReturningExpression, perDimensionExpressions);
    }
}