// Copyright 2011 Google Inc. All Rights Reserved.
//
// 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
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package com.hughes.util;

import java.util.Map;

@SuppressWarnings({"WeakerAccess", "unused"})
public class MapUtil {

    public static <K,V> V safeGet(final Map<K,V> map, K key, V defaultValue) {
        if (!map.containsKey(key)) {
            return defaultValue;
        }
        return map.get(key);
    }

    public static <K,V> V safeGetOrPut(final Map<K,V> map, K key, V defaultValue) {
        if (!map.containsKey(key)) {
            map.put(key, defaultValue);
        }
        return map.get(key);
    }

    public static <K,V> V safeGet(final Map<K,V> map, K key, Class<V> valueClass) {
        if (!map.containsKey(key)) {
            try {
                map.put(key, valueClass.newInstance());
            } catch (Exception e) {
                throw new RuntimeException(e);
            }
        }
        return map.get(key);
    }

    public static <K,V> V safeRemove(final Map<K,V> map, K key, V defaultValue) {
        if (!map.containsKey(key)) {
            return defaultValue;
        }
        return map.remove(key);
    }


}