com.squarespace.compiler.parse.Atom Maven / Gradle / Ivy

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/**
 * Copyright, 2017, Squarespace, 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.squarespace.compiler.parse;

import java.util.Objects;


/**
 * Wrapper for an atomic value.
 */
public class Atom> extends Node {

  private final Object value;

  private final int hashCode;

  public Atom(T type, Object value) {
    super(type);
    this.value = value;
    this.hashCode = Objects.hash(type, value);
  }

  public Object value() {
    return value;
  }

  public static > Node atom(T type, Object value) {
    return new Atom(type, value);
  }

  @Override
  public int hashCode() {
    return hashCode;
  }

  @Override
  public boolean equals(Object obj) {
    if (obj instanceof Atom) {
      Atom other = (Atom) obj;
      return type().equals(other.type()) && Objects.equals(value, other.value);
    }
    return false;
  }

}