org.apache.hadoop.hive.serde2.dynamic_type.TokenMgrError Maven / Gradle / Ivy

/* Generated By:JavaCC: Do not edit this line. TokenMgrError.java Version 3.0 */
package org.apache.hadoop.hive.serde2.dynamic_type;

public class TokenMgrError extends Error {
  /*
   * Ordinals for various reasons why an Error of this type can be thrown.
   */

  /**
   * Lexical error occured.
   */
  static final int LEXICAL_ERROR = 0;

  /**
   * An attempt wass made to create a second instance of a static token manager.
   */
  static final int STATIC_LEXER_ERROR = 1;

  /**
   * Tried to change to an invalid lexical state.
   */
  static final int INVALID_LEXICAL_STATE = 2;

  /**
   * Detected (and bailed out of) an infinite loop in the token manager.
   */
  static final int LOOP_DETECTED = 3;

  /**
   * Indicates the reason why the exception is thrown. It will have one of the
   * above 4 values.
   */
  int errorCode;

  /**
   * Replaces unprintable characters by their espaced (or unicode escaped)
   * equivalents in the given string
   */
  protected static final String addEscapes(String str) {
    StringBuilder retval = new StringBuilder();
    char ch;
    for (int i = 0; i < str.length(); i++) {
      switch (str.charAt(i)) {
      case 0:
        continue;
      case '\b':
        retval.append("\\b");
        continue;
      case '\t':
        retval.append("\\t");
        continue;
      case '\n':
        retval.append("\\n");
        continue;
      case '\f':
        retval.append("\\f");
        continue;
      case '\r':
        retval.append("\\r");
        continue;
      case '\"':
        retval.append("\\\"");
        continue;
      case '\'':
        retval.append("\\\'");
        continue;
      case '\\':
        retval.append("\\\\");
        continue;
      default:
        if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) {
          String s = "0000" + Integer.toString(ch, 16);
          retval.append("\\u" + s.substring(s.length() - 4, s.length()));
        } else {
          retval.append(ch);
        }
        continue;
      }
    }
    return retval.toString();
  }

  /**
   * Returns a detailed message for the Error when it is thrown by the token
   * manager to indicate a lexical error. Parameters : EOFSeen : indicates if
   * EOF caused the lexicl error curLexState : lexical state in which this error
   * occured errorLine : line number when the error occured errorColumn : column
   * number when the error occured errorAfter : prefix that was seen before this
   * error occured curchar : the offending character Note: You can customize the
   * lexical error message by modifying this method.
   */
  protected static String LexicalError(boolean EOFSeen, int lexState,
      int errorLine, int errorColumn, String errorAfter, char curChar) {
    return ("Lexical error at line "
        + errorLine
        + ", column "
        + errorColumn
        + ".  Encountered: "
        + (EOFSeen ? " "
        : ("\"" + addEscapes(String.valueOf(curChar)) + "\"") + " ("
        + (int) curChar + "), ") + "after : \""
        + addEscapes(errorAfter) + "\"");
  }

  /**
   * You can also modify the body of this method to customize your error
   * messages. For example, cases like LOOP_DETECTED and INVALID_LEXICAL_STATE
   * are not of end-users concern, so you can return something like :
   * 
   * "Internal Error : Please file a bug report .... "
   * 
   * from this method for such cases in the release version of your parser.
   */
  @Override
  public String getMessage() {
    return super.getMessage();
  }

  /*
   * Constructors of various flavors follow.
   */

  public TokenMgrError() {
  }

  public TokenMgrError(String message, int reason) {
    super(message);
    errorCode = reason;
  }

  public TokenMgrError(boolean EOFSeen, int lexState, int errorLine,
      int errorColumn, String errorAfter, char curChar, int reason) {
    this(LexicalError(EOFSeen, lexState, errorLine, errorColumn, errorAfter,
        curChar), reason);
  }
}