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

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

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/**
 * 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 java.util.HashMap;
import java.util.Iterator;
import java.util.Map.Entry;

import com.google.common.collect.ImmutableMap;
import io.usethesource.criterion.api.JmhMap;
import io.usethesource.criterion.api.JmhValue;

public final class ImmutableGuavaMap implements JmhMap {

    private final ImmutableMap<JmhValue, JmhValue> content;

    protected ImmutableGuavaMap(ImmutableMap<JmhValue, JmhValue> content) {
        this.content = content;
    }

    @Override
    public boolean isEmpty() {
        return content.isEmpty();
    }

    @Override
    public int size() {
        return content.size();
    }

    @Override
    public JmhMap put(JmhValue key, JmhValue value) {
        final HashMap<JmhValue, JmhValue> tmpContent = new HashMap<>(content);
        tmpContent.put(key, value);

        final ImmutableMap<JmhValue, JmhValue> newContent = ImmutableMap.copyOf(tmpContent);

        return new ImmutableGuavaMap(newContent);

        //    try {
        //      final ImmutableMap<JmhValue, JmhValue> newContent =
        //          ImmutableMap.<JmhValue, JmhValue>builder().putAll(content).put(key, value).build();
        //
        //      return new ImmutableGuavaMap(newContent);
        //    } catch (IllegalArgumentException e) {
        //      return this;
        //    }
    }

    @Override
    public JmhMap removeKey(JmhValue key) {
        final HashMap<JmhValue, JmhValue> tmpContent = new HashMap<>(content);
        tmpContent.remove(key);

        final ImmutableMap<JmhValue, JmhValue> newContent = ImmutableMap.copyOf(tmpContent);

        return new ImmutableGuavaMap(newContent);
    }

    @Override
    public boolean containsKey(JmhValue key) {
        return content.containsKey(key);
    }

    @Override
    public boolean containsValue(JmhValue value) {
        return content.containsValue(value);
    }

    @Override
    public JmhValue get(JmhValue key) {
        return content.get(key);
    }

    @Override
    public int hashCode() {
        return content.hashCode();
    }

    @Override
    public boolean equals(Object other) {
        if (other == this) {
            return true;
        }
        if (other == null) {
            return false;
        }

        if (other instanceof ImmutableGuavaMap) {
            ImmutableGuavaMap that = (ImmutableGuavaMap) other;

            if (this.size() != that.size()) {
                return false;
            }

            return content.equals(that.content);
        }

        return false;
    }

    @Override
    public Object unwrap() {
        return content;
    }

    @Override
    public Iterator<JmhValue> iterator() {
        return content.keySet().iterator();
    }

    @Override
    public Iterator<JmhValue> valueIterator() {
        return content.values().iterator();
    }

    @Override
    public Iterator<Entry<JmhValue, JmhValue>> entryIterator() {
        return content.entrySet().iterator();
    }

}