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A Minimal JSON Parser and Writer

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/*******************************************************************************
 * Copyright (c) 2013 EclipseSource.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *    Ralf Sternberg - initial implementation and API
 ******************************************************************************/
package com.eclipsesource.json;


/**
 * An unchecked exception to indicate that an input does not qualify as valid JSON.
 */
@SuppressWarnings( "serial" ) // use default serial UID
public class ParseException extends RuntimeException {

  private final int offset;
  private final int line;
  private final int column;

  ParseException( String message, int offset, int line, int column ) {
    super( message + " at " + line + ":" + column );
    this.offset = offset;
    this.line = line;
    this.column = column;
  }

  /**
   * Returns the absolute index of the character at which the error occurred. The
   * index of the first character of a document is 0.
   *
   * @return the character offset at which the error occurred, will be >= 0
   */
  public int getOffset() {
    return offset;
  }

  /**
   * Returns the number of the line in which the error occurred. The first line counts as 1.
   *
   * @return the line in which the error occurred, will be >= 1
   */
  public int getLine() {
    return line;
  }

  /**
   * Returns the index of the character at which the error occurred, relative to the line. The
   * index of the first character of a line is 0.
   *
   * @return the column in which the error occurred, will be >= 0
   */
  public int getColumn() {
    return column;
  }

}