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Shift format ECMAScript 6 AST tooling

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/*
 * Copyright 2014 Shape Security, 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.shapesecurity.shift.ast.expression;

import com.shapesecurity.shift.ast.Identifier;
import com.shapesecurity.shift.ast.types.Type;

import org.jetbrains.annotations.NotNull;

public class IdentifierExpression extends PrimaryExpression {
  @NotNull
  public final Identifier identifier;

  public IdentifierExpression(@NotNull Identifier identifier) {
    super();
    this.identifier = identifier;
  }

  @NotNull
  @Override
  public Type type() {
    return Type.IdentifierExpression;
  }

  @Override
  public boolean equals(Object object) {
    return object instanceof IdentifierExpression && this.identifier.equals(((IdentifierExpression) object).identifier);
  }

  @NotNull
  public Identifier getIdentifier() {
    return this.identifier;
  }

  @NotNull
  public IdentifierExpression setIdentifier(@NotNull Identifier identifier) {
    return new IdentifierExpression(identifier);
  }
}