/* * Copyright (C) 2008 Google Inc. * * 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.google.gson.internal; import java.lang.reflect.Type; /** * Contains static utility methods pertaining to primitive types and their corresponding wrapper * types. * * @author Kevin Bourrillion */ public final class Primitives { private Primitives() {} /** Returns true if this type is a primitive. */ public static boolean isPrimitive(Type type) { return type instanceof Class> && ((Class>) type).isPrimitive(); } /** * Returns {@code true} if {@code type} is one of the nine primitive-wrapper types, such as {@link * Integer}. * * @see Class#isPrimitive */ public static boolean isWrapperType(Type type) { return type == Integer.class || type == Float.class || type == Byte.class || type == Double.class || type == Long.class || type == Character.class || type == Boolean.class || type == Short.class || type == Void.class; } /** * Returns the corresponding wrapper type of {@code type} if it is a primitive type; otherwise * returns {@code type} itself. Idempotent. * *
* wrap(int.class) == Integer.class * wrap(Integer.class) == Integer.class * wrap(String.class) == String.class **/ @SuppressWarnings({"unchecked", "MissingBraces"}) public static
* unwrap(Integer.class) == int.class * unwrap(int.class) == int.class * unwrap(String.class) == String.class **/ @SuppressWarnings({"unchecked", "MissingBraces"}) public static