org.logicng.formulas.cache.TransformationCacheEntry Maven / Gradle / Ivy

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//               The Next Generation Logic Library                       //
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//  Copyright 2015-20xx Christoph Zengler                                //
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//  Licensed under the Apache License, Version 2.0 (the "License");      //
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//  http://www.apache.org/licenses/LICENSE-2.0                           //
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package org.logicng.formulas.cache;

/**
 * The pre-defined transformation cache entries.
 * @version 2.3.0
 * @since 1.0
 */
public enum TransformationCacheEntry implements CacheEntry {
    NNF("negation normal form"),
    PLAISTED_GREENBAUM_POS("Plaisted & Greenbaum conjunctive normal form (positive polarity)"),
    PLAISTED_GREENBAUM_NEG("Plaisted & Greenbaum conjunctive normal form (negative polarity)"),
    PLAISTED_GREENBAUM_VARIABLE("Plaisted & Greenbaum variable"),
    TSEITIN("Tseitin conjunctive normal form"),
    TSEITIN_VARIABLE("Tseitin variable"),
    FACTORIZED_CNF("factorized conjunctive normal form"),
    BDD_CNF("conjunctive normal form via BDD"),
    FACTORIZED_DNF("factorized disjunctive normal form"),
    BDD_DNF("disjunctive normal form via BDD"),
    AIG("and-inverter graph"),
    UNIT_PROPAGATION("unit propagation"),
    DISTRIBUTIVE_SIMPLIFICATION("distributive simplification"),
    ANONYMIZATION("anonymization");

    private final String description;

    /**
     * Constructs a new entry.
     * @param description the description of this entry
     */
    TransformationCacheEntry(final String description) {
        this.description = description;
    }

    @Override
    public String description() {
        return "TransformationCacheEntry{description=" + this.description + "}";
    }
}