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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");      //
//  you may not use this file except in compliance with the License.     //
//  You may obtain a copy of the License at                              //
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//  http://www.apache.org/licenses/LICENSE-2.0                           //
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package org.logicng.formulas;

import java.util.Arrays;

/**
 * A wrapper class for the internal formula factory state.
 * @version 1.2
 * @since 1.2
 */
public final class FormulaFactoryState {

    private final int id;

    private final int[] state;

    /**
     * Creates a new formula factory state with a given id and internal formula factory data.
     * @param id    the id
     * @param state the formula factory data
     */
    FormulaFactoryState(final int id, final int[] state) {
        this.id = id;
        this.state = Arrays.copyOf(state, state.length);
    }

    /**
     * Returns the id of this state.
     * @return the id of this state
     */
    int id() {
        return id;
    }

    /**
     * Returns the internal formula factory state.
     * @return the internal formula factory state
     */
    int[] state() {
        return this.state;
    }

    @Override
    public String toString() {
        return String.format("FormulaFactoryState{id=%d, state=%s}", id, Arrays.toString(state));
    }
}