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2463
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"{ Package: 'stx:libview2' }"
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BlockValue subclass:#BooleanBlockValue
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instanceVariableNames:''
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classVariableNames:''
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poolDictionaries:''
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category:'Interface-Support-Models'
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!
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!BooleanBlockValue methodsFor:'logical operations'!
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& anotherBooleanValueHolder
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"return another valueHolder, which returns the logical and of myself and another valueHolder"
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^ BooleanBlockValue
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forLogical:self and:anotherBooleanValueHolder
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"
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|b1 b2 a|
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b1 := BooleanValueHolder new.
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b2 := BooleanValueHolder new.
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a := b1 & b2.
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b1 value:false.
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b2 value:true.
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a value.
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b1 value:true.
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a value.
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"
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!
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not
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"return another valueHolder, which returns the logical not of myself"
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^ BooleanBlockValue forLogicalNot:self.
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"
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|b nb|
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b := BooleanValueHolder new.
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nb := b not.
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b value:true.
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nb value.
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b value:false.
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nb value.
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"
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!
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| anotherBooleanValueHolder
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"return another valueHolder, which returns the logical and of myself and another valueHolder"
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^ BooleanBlockValue
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forLogical:self or:anotherBooleanValueHolder
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"
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|b1 b2 o|
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b1 := BooleanValueHolder new.
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b2 := BooleanValueHolder new.
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o := b1 | b2.
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b1 value:false.
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b2 value:false.
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o value.
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b1 value:true.
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o value.
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"
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! !
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!BooleanBlockValue class methodsFor:'documentation'!
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version
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^ '$Header: /cvs/stx/stx/libview2/BooleanBlockValue.st,v 1.1 2008-05-19 16:12:11 cg Exp $'
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! !
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