IBM Version 4 manual Copy Qusec of QSYSINC-QCBLLESRC, Error-Handler, Numeric-Group Pic

COPY QUSEC OF QSYSINC-QCBLLESRC.

\

\Miscellaneous elements

ð1 MISC.

	ð5	Y	PIC	S9(ð9) VALUE ð.
ð1	ERROR-HANDLER		PROCEDURE-POINTER.
ð1 OLD-ERROR-HANDLER			PROCEDURE-POINTER.
ð1	NUMERIC-GROUP.
	ð5	X	PIC	9(ð3).

\

\Beginning of mainline

PROCEDURE DIVISION. MAIN-LINE.

\Register the COBOL Error Handler.

\Initialize the error code parameter. To signal exceptions to

\this program by the API, you need to set the bytes provided￿

\field of the error code to zero. Because this program has

\exceptions sent back through the error code parameter, it￿ sets

\the bytes provided field to the number of bytes it gives t￿he

\API for the parameter.

\

MOVE 16 TO BYTES-PROVIDED.

\

\Set ERROR-HANDLER procedure pointer to entry point of

\ERRHDL1 \PGM

\

SET ERROR-HANDLER TO ENTRY LINKAGE PROGRAM "ERRHDL2".

\

\

\Call the API to register the exit point.

CALL "QlnSetCobolErrorHandler" USING ERROR-HANDLER,

OLD-ERROR-HANDLER, QUS-EC.

\

\If an exception occurs, the API returns the exception in t￿he

\error code parameter. The bytes available field is set to

\zero if no exception occurs and greater than zero if an

\exception does occur.

\

IF BYTES-AVAILABLE > ð

DISPLAY "Error setting handler",

STOP RUN.

\

\If the call to register an error handler is successful, th￿en

\cause a the data decimal error (X is initialized to blanks￿).

ADD X TO Y.

\Should not get here due to data decimal error

\

STOP RUN.

\

\ End of MAINLINE

Appendix B. Original Examples in Additional BLanguages-123