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/*
* Copyright (c) 2024. caoccao.com Sam Cao
*
* 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.caoccao.javet.swc4j.utils;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
/**
* The type Simple map is a polyfill because Map.of() is not available at JDK 8 .
*
* @since 0.2.0
*/
public final class SimpleMap {
private SimpleMap() {
}
/**
* Immutable map.
*
* @param the type parameter
* @param the type parameter
* @param map the map
* @return the map
* @since 0.4.0
*/
public static Map immutable(Map map) {
return Collections.unmodifiableMap(map);
}
/**
* Immutable of map.
*
* @param the type parameter
* @param the type parameter
* @param objects the objects
* @return the map
* @since 0.8.0
*/
public static Map immutableOf(Object... objects) {
return immutable(of(objects));
}
/**
* Of map.
*
* @param the type parameter
* @param the type parameter
* @param k1 the k1
* @param v1 the v1
* @return the map
* @since 0.2.0
*/
public static Map of(
K k1, V v1
) {
HashMap map = new HashMap();
map.put(k1, v1);
return map;
}
/**
* Of map.
*
* @param the type parameter
* @param the type parameter
* @param k1 the k1
* @param v1 the v1
* @param k2 the k2
* @param v2 the v2
* @return the map
* @since 0.2.0
*/
public static Map of(
K k1, V v1,
K k2, V v2
) {
HashMap map = new HashMap();
map.put(k1, v1);
map.put(k2, v2);
return map;
}
/**
* Of map.
*
* @param the type parameter
* @param the type parameter
* @param k1 the k1
* @param v1 the v1
* @param k2 the k2
* @param v2 the v2
* @param k3 the k3
* @param v3 the v3
* @return the map
* @since 0.2.0
*/
public static Map of(
K k1, V v1,
K k2, V v2,
K k3, V v3
) {
HashMap map = new HashMap();
map.put(k1, v1);
map.put(k2, v2);
map.put(k3, v3);
return map;
}
/**
* Of map.
*
* @param the type parameter
* @param the type parameter
* @param k1 the k1
* @param v1 the v1
* @param k2 the k2
* @param v2 the v2
* @param k3 the k3
* @param v3 the v3
* @param k4 the k4
* @param v4 the v4
* @return the map
* @since 0.2.0
*/
public static Map of(
K k1, V v1,
K k2, V v2,
K k3, V v3,
K k4, V v4
) {
HashMap map = new HashMap();
map.put(k1, v1);
map.put(k2, v2);
map.put(k3, v3);
map.put(k4, v4);
return map;
}
/**
* Of map.
*
* @param the type parameter
* @param the type parameter
* @param k1 the k1
* @param v1 the v1
* @param k2 the k2
* @param v2 the v2
* @param k3 the k3
* @param v3 the v3
* @param k4 the k4
* @param v4 the v4
* @param k5 the k5
* @param v5 the v5
* @return the map
* @since 0.2.0
*/
public static Map of(
K k1, V v1,
K k2, V v2,
K k3, V v3,
K k4, V v4,
K k5, V v5
) {
HashMap map = new HashMap();
map.put(k1, v1);
map.put(k2, v2);
map.put(k3, v3);
map.put(k4, v4);
map.put(k5, v5);
return map;
}
/**
* Of map.
*
* @param the type parameter
* @param the type parameter
* @param k1 the k1
* @param v1 the v1
* @param k2 the k2
* @param v2 the v2
* @param k3 the k3
* @param v3 the v3
* @param k4 the k4
* @param v4 the v4
* @param k5 the k5
* @param v5 the v5
* @param k6 the k6
* @param v6 the v6
* @return the map
* @since 0.2.0
*/
public static Map of(
K k1, V v1,
K k2, V v2,
K k3, V v3,
K k4, V v4,
K k5, V v5,
K k6, V v6
) {
HashMap map = new HashMap();
map.put(k1, v1);
map.put(k2, v2);
map.put(k3, v3);
map.put(k4, v4);
map.put(k5, v5);
map.put(k6, v6);
return map;
}
/**
* Of map.
*
* @param the type parameter
* @param the type parameter
* @param k1 the k1
* @param v1 the v1
* @param k2 the k2
* @param v2 the v2
* @param k3 the k3
* @param v3 the v3
* @param k4 the k4
* @param v4 the v4
* @param k5 the k5
* @param v5 the v5
* @param k6 the k6
* @param v6 the v6
* @param k7 the k7
* @param v7 the v7
* @return the map
* @since 0.2.0
*/
public static Map of(
K k1, V v1,
K k2, V v2,
K k3, V v3,
K k4, V v4,
K k5, V v5,
K k6, V v6,
K k7, V v7
) {
HashMap map = new HashMap();
map.put(k1, v1);
map.put(k2, v2);
map.put(k3, v3);
map.put(k4, v4);
map.put(k5, v5);
map.put(k6, v6);
map.put(k7, v7);
return map;
}
/**
* Of map.
*
* @param the type parameter
* @param the type parameter
* @param k1 the k1
* @param v1 the v1
* @param k2 the k2
* @param v2 the v2
* @param k3 the k3
* @param v3 the v3
* @param k4 the k4
* @param v4 the v4
* @param k5 the k5
* @param v5 the v5
* @param k6 the k6
* @param v6 the v6
* @param k7 the k7
* @param v7 the v7
* @param k8 the k8
* @param v8 the v8
* @return the map
* @since 0.2.0
*/
public static Map of(
K k1, V v1,
K k2, V v2,
K k3, V v3,
K k4, V v4,
K k5, V v5,
K k6, V v6,
K k7, V v7,
K k8, V v8
) {
HashMap map = new HashMap();
map.put(k1, v1);
map.put(k2, v2);
map.put(k3, v3);
map.put(k4, v4);
map.put(k5, v5);
map.put(k6, v6);
map.put(k7, v7);
map.put(k8, v8);
return map;
}
/**
* Of map.
*
* @param the type parameter
* @param the type parameter
* @param objects the objects
* @return the map
* @since 0.2.0
*/
@SuppressWarnings("unchecked")
public static Map of(Object... objects) {
final int length = objects.length;
AssertionUtils.notTrue(length % 2 == 0, "Object count must be an odd number.");
HashMap map = new HashMap();
for (int i = 0; i < length; i += 2) {
map.put((K) objects[i], (V) objects[i + 1]);
}
return map;
}
}
