ProvideX V8.20 > Language Reference > A. Appendix

814

Labels/Logical Statement References

ProvideX supports the use of logical statement references (line labels) in lieu of

actual line number/label references in your applications. ProvideX supplies a set of

built-in labels (keywords, with leading asterisks) that can be used wherever you

would use a statement reference. Note that some of the logical line labels and the

directives they emulate will remove an item from your stack and perform a RESET.

The following logical statement references are supported in ProvideX:

Emulates BREAK Immediate Exit of Loop, p.33.

*BREAK

Emulates CONTINUE Initiates Next Iteration of Loop, p.56.

*CONTINUE

Emulates END Halt Program Execution, p.112.

*END

Emulates ESCAPE Interrupt Program Execution, p.121.

*ESCAPE

Goes to the beginning of the next line/statement.

*NEXT

Continues to the next statement in a compound statement or to the

*PROCEED

beginning of the next line.

Emulates RETRY Re-Execute Failing Instruction, p.288.

*RETRY

Emulates RETURN Subroutine/Function Return, p.289.

*RETURN

Goes to the start of current line/statement.

*SAME

Note: In earlier versions of ProvideX, the *CONTINUE and *BREAK labels and the

corresponding directives were not supported for use with SELECT / NEXT RECORD

directives. BREAK and *BREAK commands can now be used in SELECT structures.

Examples

A=0, Y$=""

READ (1,IND=A++,ERR=*NEXT)X$; Y$+=X$; GOTO *SAME

See Also

BREAK Directive, p.33

CONTINUE Directive, p.56

END Directive, p.112

ESCAPE Directive, p.121

RETRY Directive, p.288

RETURN Directive, p.289