Preconditions.java
/*
* Copyright 2023-2024 Markitect
*
* 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 dev.markitect.liquibase.base;
import com.google.errorprone.annotations.CanIgnoreReturnValue;
import org.checkerframework.checker.nullness.qual.Nullable;
public final class Preconditions {
@CanIgnoreReturnValue
public static int checkIndex(int index, int size) {
if (index < 0 || index >= size) {
throw new IndexOutOfBoundsException(
index < 0
? "index (" + index + ") must be non-negative"
: "index (" + index + ") must be less than size (" + size + ")");
}
return index;
}
@CanIgnoreReturnValue
public static int checkIndex(int index, int size, @Nullable String errorMessage) {
if (index < 0 || index >= size) {
throw new IndexOutOfBoundsException(String.valueOf(errorMessage));
}
return index;
}
@CanIgnoreReturnValue
public static <T> T checkNotNull(T reference) {
if (reference == null) {
throw new NullPointerException();
}
return reference;
}
@CanIgnoreReturnValue
public static <T> T checkNotNull(T reference, @Nullable String errorMessage) {
if (reference == null) {
throw new NullPointerException(String.valueOf(errorMessage));
}
return reference;
}
public static void checkState(boolean expression) {
if (!expression) {
throw new IllegalStateException();
}
}
public static void checkState(boolean expression, @Nullable String errorMessage) {
if (!expression) {
throw new IllegalStateException(String.valueOf(errorMessage));
}
}
private Preconditions() {}
}