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Closure Compiler is a JavaScript optimizing compiler. It parses your JavaScript, analyzes it, removes dead code and rewrites and minimizes what's left. It also checks syntax, variable references, and types, and warns about common JavaScript pitfalls. It is used in many of Google's JavaScript apps, including Gmail, Google Web Search, Google Maps, and Google Docs.

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/*
 * Copyright 2011 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.debugging.sourcemap;

/**
 * A class representing a partial source map.
 */
public final class SourceMapSection {

  /**
   * A URL for a valid source map file that represents a section of a generate
   * source file such as when multiple files are concatenated together.
   */
  private final String value;
  private final int line;
  private final int column;
  private final SectionType type;

  public static enum SectionType {
    URL,
    MAP
  }

  /**
   * @param sectionUrl The URL for the partial source map
   * @param line The number of lines into the file where the represented section
   *    starts.
   * @param column The number of characters into the line where the represented
   *    section starts.
   * @deprecated
   */
  @Deprecated
  public SourceMapSection(String sectionUrl, int line, int column) {
    this.type = SectionType.URL;
    this.value = sectionUrl;
    this.line = line;
    this.column = column;
  }

  private SourceMapSection(
      SectionType type, String value, int line, int column) {
    this.type = type;
    this.value = value;
    this.line = line;
    this.column = column;
  }

  public static SourceMapSection forMap(String value, int line, int column) {
    return new SourceMapSection(SectionType.MAP, value, line, column);
  }

  public static SourceMapSection forURL(String value, int line, int column) {
    return new SourceMapSection(SectionType.URL, value, line, column);
  }

  public SectionType getSectionType() {
    return this.type;
  }

  /**
   * @return the value that represents the map for this section.
   */
  public String getSectionValue() {
    return value;
  }

  /**
   * @return the starting line for this section
   */
  public int getLine() {
    return line;
  }

  /**
   * @return the column for this section
   */
  public int getColumn() {
    return column;
  }
}