content: /*
   * Copyright (C) 2020 ActiveJ LLC.
   *
   * 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 io.activej.codegen;
  
  import java.util.Arrays;
  
  /**
   * A key that is used as a cache key in a {@link DefiningClassLoader}.
   * <p>
   * Represents some superclass with an array of parameters.
   */
  public final class ClassKey<T> {
  	private final Class<T> clazz;
  	private final Object[] parameters;
  
  	private ClassKey(Class<T> clazz, Object[] parameters) {
  		this.clazz = clazz;
  		this.parameters = parameters;
  	}
  
  	public static <T> ClassKey<T> of(Class<? super T> clazz, Object... parameters) {
  		//noinspection unchecked,rawtypes
  		return new ClassKey<>((Class) clazz, parameters);
  	}
  
  	public Class<T> getKeyClass() {
  		return clazz;
  	}
  
  	public Object[] getParameters() {
  		return parameters;
  	}
  
  	@Override
  	public boolean equals(Object o) {
  		if (this == o) return true;
  		if (o == null || getClass() != o.getClass()) return false;
  		ClassKey<?> that = (ClassKey<?>) o;
  		return
  			clazz.equals(that.clazz) &&
  			Arrays.equals(this.parameters, that.parameters);
  	}
  
  	@Override
  	public int hashCode() {
  		return clazz.hashCode() * 31 + Arrays.hashCode(parameters);
  	}
  
  	@Override
  	public String toString() {
  		return
  			clazz.getName() +
  			(parameters != null && parameters.length != 0 ? " " + Arrays.toString(parameters) : "");
  	}
  }
  