IB Statements/noexcp

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Revision as of 22:43, 27 May 2009 (view source) Badge (Talk | contribs) ← Older edit		Latest revision as of 18:07, 4 June 2016 (view source) Jim (Talk | contribs) (explained use of noexcp better)
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-	'''Noexcp'''	+	'''NOEXCP option on file system statements'''
-	C32 Only	+	Parameter:  NOEXCP
-	CREATE 'file',dir='dir',noexcp	+	Discussion:
		+	Introduced with Comet32 this parameter may be used in file system statements to specify that if a non-fatal runtime exception occurs it should be ignored.<br> This option is available for:
		+	ERASE,
		+	ENTER,
		+	EXTRACT,
		+	CREATE,
		+	CREATEKEY,
		+	DELETE,
		+	INPUT,
		+	INPUTFILE,
		+	INQUIRE,
		+	INSERT,
		+	POSITION,
		+	PRINTFILE,
		+	PRINT,
		+	OPEN,
		+	UPDATE,
		+	READ,
		+	RENAME,
		+	REWRITE,
		+	RUN,
		+	LOCK,
		+	UNLOCK,
		+	WRITE.
		+
		+	For information about handling specific exceptions, see Exception Handling.
-	You can use noexcp on any of the following:	+	Note that the EXCP variable will still contain the last exception encountered, and will not be set to zero. This allows a form of "goto less programming"
-	Input	+	Also see [[IB_Statements/excpsub|ExcpSub]]
-	Print	+
-	InputFile	+	'''Example:'''
-	PrintFile	+
-	Create	+	EXCP=0
-	Erase	+	ERASE file$ dir=dir$ NOEXCP
-	Open	+	CREATE file$ dir=dir$ NOEXCP
-	Read	+	Close(LUN) & OPEN(LUN)file$ dir=dir$ NOEXCP
-	Write	+	if EXCP ne 0 print 'got an error ';EXCP;' creating ';file$
-	Extract	+
-	Update	+
-	Delete	+	See [[System_Variables|System Variables]] and [[IB_Statements/EXCP|Excp]] for more information.
-	Input	+
-	Print	+
-	Rename	+
-	Lock	+
-	Unlock	+
-	Run	+
-	Insert	+
-	Rewrite	+
-	Enter	+
-	Inquire	+
-	CreateKey	+
-	Position	+

---

Latest revision as of 18:07, 4 June 2016

NOEXCP option on file system statements

Parameter: NOEXCP

Discussion: Introduced with Comet32 this parameter may be used in file system statements to specify that if a non-fatal runtime exception occurs it should be ignored.
This option is available for:

ERASE,
ENTER,
EXTRACT,
CREATE,
CREATEKEY,
DELETE,
INPUT,
INPUTFILE,
INQUIRE,
INSERT,
POSITION,
PRINTFILE,
PRINT,
OPEN,
UPDATE,
READ,
RENAME,
REWRITE,
RUN,
LOCK,
UNLOCK,
WRITE.

For information about handling specific exceptions, see Exception Handling.

Note that the EXCP variable will still contain the last exception encountered, and will not be set to zero. This allows a form of "goto less programming"

Also see ExcpSub

Example:

EXCP=0
ERASE file$ dir=dir$ NOEXCP
CREATE file$ dir=dir$ NOEXCP
Close(LUN) & OPEN(LUN)file$ dir=dir$ NOEXCP
if EXCP ne 0 print 'got an error ';EXCP;' creating ';file$

See System Variables and Excp for more information.