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Access to the Neo4j graph database through Java

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/*
 * Copyright (c) "Neo4j"
 * Neo4j Sweden AB [https://neo4j.com]
 *
 * 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 org.neo4j.driver.internal.util;

public final class Preconditions {
    private Preconditions() {}

    /**
     * Assert that given expression is true.
     *
     * @param expression the value to check.
     * @param message the message.
     * @throws IllegalArgumentException if given value is {@code false}.
     */
    public static void checkArgument(boolean expression, String message) {
        if (!expression) {
            throw new IllegalArgumentException(message);
        }
    }

    /**
     * Assert that given argument is of expected type.
     *
     * @param argument the object to check.
     * @param expectedClass the expected type.
     * @throws IllegalArgumentException if argument is not of expected type.
     */
    public static void checkArgument(Object argument, Class expectedClass) {
        if (!expectedClass.isInstance(argument)) {
            throw new IllegalArgumentException(
                    "Argument expected to be of type: " + expectedClass.getName() + " but was: " + argument);
        }
    }
}