Checks the status returned by a command and either continues processing or branches to the associated label in response to the status.
IFERROR "Label"; <SKIPPED COMMANDS> :Label ; <COMMANDS OR EOF>
| "Label" | String of characters terminated by a whitespace; not case-sensitive. |
| :Label | Target location, preceded by a colon (:), and associated with "Label". Processing skips to this label. |
This command provides the functionality of error checking and conditional branching on errors.
If the previously executed command returned a nonzero
status, processing skips all subsequent commands and moves
to the associated label, where it resumes. Commands that
follow :Label can implement error handling or stop processing.
Processing ignores even the EXIT command if it precedes :Label.
If EOF occurs before :Label is found, processing terminates.
LOGIN "IRIS" "SYS" "PASSWORD";
SELECT "DANI" "TEST";
BUILDDIM 2 "NEWGENS.RUL" 2 "NEWGENS.TXT" 4 "REJREC.ERR";
IFERROR "DIMBUILDFAILED"; /* If BUILDDIM fails */
LOADDATA 2 "JANACT.TXT"; /* Skip LOADDATA */
:DIMBUILDFAILED; /* Move here */
EXIT; /* and exit */
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