io.usethesource.criterion.impl.immutable.guava.ImmutableGuavaSetBuilder.java Source code

Introduction

Here is the source code for io.usethesource.criterion.impl.immutable.guava.ImmutableGuavaSetBuilder.java

Source

/**
 * Copyright (c) Michael Steindorfer <Centrum Wiskunde & Informatica> and Contributors.
 * All rights reserved.
 *
 * This file is licensed under the BSD 2-Clause License, which accompanies this project
 * and is available under https://opensource.org/licenses/BSD-2-Clause.
 */
package io.usethesource.criterion.impl.immutable.guava;

import com.google.common.collect.ImmutableSet;
import io.usethesource.criterion.api.JmhSet;
import io.usethesource.criterion.api.JmhValue;

final class ImmutableGuavaSetBuilder implements JmhSet.Builder {

    protected ImmutableSet.Builder<JmhValue> setContent;
    protected JmhSet constructedSet;

    ImmutableGuavaSetBuilder() {
        setContent = ImmutableSet.builder();
        constructedSet = null;
    }

    @Override
    public void insert(JmhValue... keys) {
        checkMutation();
        setContent.add(keys);
    }

    @Override
    public void insertAll(Iterable<? extends JmhValue> collection) {
        checkMutation();
        setContent.addAll(collection);
    }

    protected void checkMutation() {
        if (constructedSet != null) {
            throw new UnsupportedOperationException("Mutation of a finalized map is not supported.");
        }
    }

    @Override
    public JmhSet done() {
        if (constructedSet == null) {
            constructedSet = new ImmutableGuavaSet(setContent.build());
        }

        return constructedSet;
    }

}