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Liferay Frontend JS Minifier

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/*
 * Copyright 2014 The Closure Compiler Authors.
 *
 * 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.javascript.refactoring;

import com.google.auto.value.AutoValue;
import com.google.auto.value.AutoValue.CopyAnnotations;
import com.google.errorprone.annotations.Immutable;

/**
 * Class that represents a set of changes to make to the code.
 *
 * @author [email protected] (Mark Knichel)
 */
@AutoValue @CopyAnnotations @Immutable
public abstract class CodeReplacement {

  static CodeReplacement create(int startPosition, int length, String newContent) {
    return create(startPosition, length, newContent, "");
  }

  static CodeReplacement create(int startPosition, int length, String newContent, String sortKey) {
    return new AutoValue_CodeReplacement(startPosition, length, newContent, sortKey);
  }

  /**
   * Returns the start position within the file that the modification should be applied starting at.
   */
  public abstract int getStartPosition();

  /** Returns how many characters the new content should replace in the original content. */
  public abstract int getLength();

  /**
   * Returns the end position within the file that the modification
   * should be applied starting at.
   */
  public int getEndPosition() {
    return getStartPosition() + getLength();
  }

  /** Returns the new content that should be inserted into the file. */
  public abstract String getNewContent();

  /**
   * Returns an additional String key that can be used to sort replacements using lexical ordering.
   */
  public abstract String getSortKey();
}