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1926
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"
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COPYRIGHT (c) 1998 by eXept Software AG
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All Rights Reserved
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This software is furnished under a license and may be used
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only in accordance with the terms of that license and with the
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inclusion of the above copyright notice. This software may not
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be provided or otherwise made available to, or used by, any
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other person. No title to or ownership of the software is
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hereby transferred.
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"
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"{ Package: 'stx:libbasic2' }"
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605
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ExternalBytes subclass:#ExternalLong
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instanceVariableNames:''
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classVariableNames:''
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poolDictionaries:''
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623
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category:'System-Support'
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605
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!
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1926
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!ExternalLong class methodsFor:'documentation'!
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copyright
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"
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COPYRIGHT (c) 1998 by eXept Software AG
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All Rights Reserved
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This software is furnished under a license and may be used
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only in accordance with the terms of that license and with the
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inclusion of the above copyright notice. This software may not
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be provided or otherwise made available to, or used by, any
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other person. No title to or ownership of the software is
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hereby transferred.
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"
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2329
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!
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documentation
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"
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mostly added for odbc
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"
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1926
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! !
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605
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!ExternalLong class methodsFor:'instance creation'!
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new
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2517
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"allocate some memory usable for data;
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the memory is not controlled by the garbage collector.
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Return a corresponding ExternalBytes object or raise MallocFailure (if malloc fails).
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Use this, if you have to pass a block of bytes to some
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external destination (such as a C function) which does not copy the
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data, but instead keeps a reference to it. For example, many functions
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which expect strings simply keep a ref to the passed string - for those,
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an ST/X string-pointer is not the right thing to pass, since ST/X objects
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may change their address.
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DANGER ALERT: the memory is NOT automatically freed until it is either
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MANUALLY freed (see #free) or the returned externalBytes object
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is unprotected or the classes releaseAllMemory method is called."
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^ super new:4
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"
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ExternalLong new
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"
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2517
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"Modified: / 20-12-2010 / 16:22:51 / cg"
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605
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!
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unprotectedNew
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2517
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"allocate some memory usable for data;
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the memory is under the control of the garbage collector.
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Return a corresponding ExternalBytes object or raise MallocFailure (if malloc fails).
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DANGER ALERT: the memory block as allocated will be automatically freed
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as soon as the reference to the returned externalBytes object
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is gone (by the next garbage collect).
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If the memory has been passed to a C-function which
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remembers this pointer, bad things may happen ...."
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^ super unprotectedNew:4
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"
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ExternalLong new
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"
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2517
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"Modified: / 20-12-2010 / 16:22:39 / cg"
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605
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! !
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!ExternalLong methodsFor:'accessing'!
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asBoolean
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|result|
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609
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result := self byteAt:1.
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605
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result = 0 ifTrue:[
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^ false.
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].
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^ true.
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!
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asInteger
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609
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^ self signedWordAt:1 MSB:false
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605
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"
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ODBCLibrary::ExternalLong new value:10
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"
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!
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asNullStatus
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|result|
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result := self wordAt:1 MSB:false.
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2329
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result = 0 ifTrue:[ ^ #SQL_NO_NULLS ].
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result = 1 ifTrue:[ ^ #SQL_NULLABLE ].
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^ #SQL_NULLABLE_UNKNOWN
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!
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asPointer
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2330
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^ ExternalAddress new setAddress:(self value)
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2329
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"
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(ExternalLong new value:10) asPointer
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"
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605
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!
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609
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boolean:bool
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bool ifTrue:[self byteAt:1 put:1].
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self byteAt:1 put:0.
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!
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605
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value
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^ self doubleWordAt:1
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"
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623
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ExternalLong new value:10
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605
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"
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623
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"Modified: / 30.3.1998 / 17:07:57 / cg"
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605
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!
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value:anInteger
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self doubleWordAt:1 put:anInteger
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! !
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2462
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!ExternalLong methodsFor:'printing & storing'!
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printOn:aStream
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aStream nextPutAll:self className; nextPut:$(.
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self asInteger printOn:aStream.
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aStream nextPut:$)
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! !
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605
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!ExternalLong class methodsFor:'documentation'!
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version
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2517
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^ '$Header: /cvs/stx/stx/libbasic2/ExternalLong.st,v 1.8 2010-12-20 15:29:36 cg Exp $'
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2329
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!
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version_CVS
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2517
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^ '$Header: /cvs/stx/stx/libbasic2/ExternalLong.st,v 1.8 2010-12-20 15:29:36 cg Exp $'
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605
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! !
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