| /** |
| * Copyright (C) 2007 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.inject.internal.util; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| |
| import java.lang.reflect.Constructor; |
| import java.lang.reflect.Field; |
| import java.lang.reflect.Member; |
| import java.lang.reflect.Method; |
| import java.lang.reflect.Modifier; |
| |
| /** |
| * Class utilities. |
| */ |
| public final class Classes { |
| |
| public static boolean isInnerClass(Class<?> clazz) { |
| return !Modifier.isStatic(clazz.getModifiers()) |
| && clazz.getEnclosingClass() != null; |
| } |
| |
| public static boolean isConcrete(Class<?> clazz) { |
| int modifiers = clazz.getModifiers(); |
| return !clazz.isInterface() && !Modifier.isAbstract(modifiers); |
| } |
| |
| /** |
| * Formats a member as concise string, such as {@code java.util.ArrayList.size}, |
| * {@code java.util.ArrayList<init>()} or {@code java.util.List.remove()}. |
| */ |
| public static String toString(Member member) { |
| Class<? extends Member> memberType = Classes.memberType(member); |
| |
| if (memberType == Method.class) { |
| return member.getDeclaringClass().getName() + "." + member.getName() + "()"; |
| } else if (memberType == Field.class) { |
| return member.getDeclaringClass().getName() + "." + member.getName(); |
| } else if (memberType == Constructor.class) { |
| return member.getDeclaringClass().getName() + ".<init>()"; |
| } else { |
| throw new AssertionError(); |
| } |
| } |
| |
| /** |
| * Returns {@code Field.class}, {@code Method.class} or {@code Constructor.class}. |
| */ |
| public static Class<? extends Member> memberType(Member member) { |
| checkNotNull(member, "member"); |
| |
| if (member instanceof Field) { |
| return Field.class; |
| |
| } else if (member instanceof Method) { |
| return Method.class; |
| |
| } else if (member instanceof Constructor) { |
| return Constructor.class; |
| |
| } else { |
| throw new IllegalArgumentException( |
| "Unsupported implementation class for Member, " + member.getClass()); |
| } |
| } |
| } |