Use inlined FNV1a hash for String
...and do not use __symbolHash(). Although currently the VM also
uses FNV1a hash for Symbols, the __symbolHash() does not handle
properly character with codepoint 0 (because '\0' is used as a
string terminator). This causes problems with Unicode16/32Strigs whose
version of FNV1a hash is using object size from header to determine
string's end.
Added Symbol>>hash that actually *uses* the __symbolHash() to make
sure it's hash is the the same as used bu the VM. Symbols with zeroes
are rare and there's no Unicode16/32Symbol.
This commit fixes issue #65.
"
COPYRIGHT (c) 2001 by eXept Software AG
All Rights Reserved
This software is furnished under a license and may be used
only in accordance with the terms of that license and with the
inclusion of the above copyright notice. This software may not
be provided or otherwise made available to, or used by, any
other person. No title to or ownership of the software is
hereby transferred.
"
"{ Package: 'stx:libbasic' }"
DomainError subclass:#ZeroDivide
instanceVariableNames:''
classVariableNames:''
poolDictionaries:''
category:'Kernel-Exceptions-Errors'
!
!ZeroDivide class methodsFor:'documentation'!
copyright
"
COPYRIGHT (c) 2001 by eXept Software AG
All Rights Reserved
This software is furnished under a license and may be used
only in accordance with the terms of that license and with the
inclusion of the above copyright notice. This software may not
be provided or otherwise made available to, or used by, any
other person. No title to or ownership of the software is
hereby transferred.
"
!
documentation
"
Raised when a division by zero is attempted.
"
!
examples
"
the following leads into a debugger:
[exBegin]
|divisor|
divisor := 0.
Transcript showCR: ( 5 / divisor ).
[exEnd]
the following does NOT lead into a debugger:
[exBegin]
|divisor|
divisor := 0.
[
Transcript showCR: ( 5 / divisor ).
] on:ZeroDivide do:[
Transcript flash.
]
[exEnd]
"
! !
!ZeroDivide class methodsFor:'initialization'!
initialize
NotifierString := 'division by zero'.
! !
!ZeroDivide methodsFor:'accessing'!
defaultResumeValue
"no, we return infinity here, if ever proceeded"
^ parameter receiver class infinity
"
|a b|
a := 5.
b := 0.
ZeroDivide handle:[:ex |
Transcript showCR:('division by zero - dividend was: ' , ex dividend printString).
ex proceed
] do:[
a / b
]
"
"
|a b|
a := 5.0.
b := 0.0.
ZeroDivide handle:[:ex |
Transcript showCR:('division by zero - dividend was: ' , ex dividend printString).
ex proceed
] do:[
a / b
]
"
!
dividend
"Return the number that was being divided by zero."
^ parameter receiver
"
|a b|
a := 5.
b := 0.
Integer divisionByZeroSignal handle:[:ex |
Transcript showCR:('division by zero - dividend was: ' , ex dividend printString)
] do:[
a // b
]
"
! !
!ZeroDivide class methodsFor:'documentation'!
version
^ '$Header: /cvs/stx/stx/libbasic/ZeroDivide.st,v 1.8 2013-01-25 17:19:34 cg Exp $'
!
version_SVN
^ '$Id: ZeroDivide.st 10761 2012-01-19 11:46:00Z vranyj1 $'
! !
ZeroDivide initialize!