Embed COBOL variable names into Java variable names

[yutaro-sakamoto]

opensource COBOL 4j translates COBOL variables into Java variable names that consists of the common prefix and serial number.
For example, the compiler converts COBOL variables HELLO and WORLD in the following programs to Java variables f_5 and f_6.

       IDENTIFICATION              DIVISION.
       PROGRAM-ID.                 a.
       DATA                        DIVISION.
       WORKING-STORAGE             SECTION.
       01 HELLO PIC X(5) VALUE "Hello".
       01 WORLD PIC X(5) VALUE "World".
       PROCEDURE                   DIVISION.
           DISPLAY HELLO.
           DISPLAY WORLD.
           STOP RUN.

      /* a.cbl:8: DISPLAY */
      {
        CobolTerminal.display (0, 1, 1, f_5);
      }
      /* a.cbl:9: DISPLAY */
      {
        CobolTerminal.display (0, 1, 1, f_6);
      }

In order to improve the readability, the compiler should convert HELLO and WORLD to Java variables f_HELLO and f_WORLD respectively.