opendap/src/main/java/opendap/servers/parsers/CeParser.java
private void yy_reduce_print (int yyrule, YYStack yystack)
  {
    if (yydebug == 0)
      return;

    int yylno = yyrline_[yyrule];
    int yynrhs = yyr2_[yyrule];
    /* Print the symbols being reduced, and their result.  */
    yycdebug ("Reducing stack by rule " + (yyrule - 1)
              + " (line " + yylno + "), ");

    /* The symbols being reduced.  */
    for (int yyi = 0; yyi < yynrhs; yyi++)
      yy_symbol_print ("   $" + (yyi + 1) + " =",
                       yystos_[yystack.stateAt(yynrhs - (yyi + 1))],
                       ((yystack.valueAt (yynrhs-(yyi + 1)))));
  }
private void yy_reduce_print (int yyrule, YYStack yystack)
  {
    if (yydebug == 0)
      return;

    int yylno = yyrline_[yyrule];
    int yynrhs = yyr2_[yyrule];
    /* Print the symbols being reduced, and their result.  */
    yycdebug ("Reducing stack by rule " + (yyrule - 1)
              + " (line " + yylno + "), ");

    /* The symbols being reduced.  */
    for (int yyi = 0; yyi < yynrhs; yyi++)
      yy_symbol_print ("   $" + (yyi + 1) + " =",
                       yystos_[yystack.stateAt(yynrhs - (yyi + 1))],
                       ((yystack.valueAt (yynrhs-(yyi + 1)))));
  }
Report on the debug stream that the rule yyrule is going to be reduced.