src/main/java/com/google/devtools/build/lib/util/ClassName.java

// Copyright 2019 The Bazel Authors. All rights reserved.
//
// 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.devtools.build.lib.util;

/** Utilities providing user-friendly class names. */
public final class ClassName {

  /**
   * Returns a class's {@link Class#getSimpleName}, but also includes the outer class's simple name
   * if this is an inner class.
   *
   * <p>For example, given {@code MyInnerClass} under {@code MyOuterClass}, returns {@code
   * "MyOuterClass$MyInnerClass"}.
   */
  public static String getSimpleNameWithOuter(Class<?> clazz) {
    String name = clazz.getName();
    return name.substring(name.lastIndexOf(".") + 1);
  }

  private ClassName() {}
}