140 lines
4.1 KiB
C
140 lines
4.1 KiB
C
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/*++
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Copyright (C) 1996-2001 Microsoft Corporation
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Module Name:
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RELATION.H
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Abstract:
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History:
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--*/
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#include <windows.h>
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typedef enum
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{
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VALUE_BOTH_FALSE = 0x1,
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VALUE_ONLY_FIRST = 0x2,
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VALUE_ONLY_SECOND = 0x4,
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VALUE_BOTH_TRUE = 0x8,
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} HMM_TWO_VALUES;
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class CTwoValues
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{
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public:
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inline static HMM_TWO_VALUES Combine(BOOL bFirst, BOOL bSecond)
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{
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return (HMM_TWO_VALUES)(1 <<
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( (bFirst == TRUE) + (bSecond == TRUE) << 1 )
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);
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}
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};
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typedef enum
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{
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RELATION_NONE = VALUE_BOTH_FALSE+VALUE_ONLY_FIRST+VALUE_ONLY_SECOND+VALUE_BOTH_TRUE,
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RELATION_EQUIVALENT = VALUE_BOTH_TRUE + VALUE_BOTH_FALSE,
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RELATION_CONTRARY = VALUE_ONLY_FIRST + VALUE_ONLY_SECOND,
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RELATION_FIRST_IMPLIES = RELATION_NONE - VALUE_ONLY_FIRST,
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RELATION_SECOND_IMPLIES = RELATION_NONE - VALUE_ONLY_SECOND,
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RELATION_NOT_BOTH = RELATION_NONE - VALUE_BOTH_TRUE,
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RELATION_AT_LEAST_ONE = RELATION_NONE - VALUE_BOTH_FALSE,
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} HMM_RELATIONSHIP;
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typedef enum
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{
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VALUE_FALSE = FALSE,
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VALUE_TRUE = TRUE,
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VALUE_INDETERMINATE,
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} THREE_VALUED_BOOL;
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class CRelationship
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{
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public:
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inline static BOOL AdmitsValue(HMM_RELATIONSHIP Rel, HMM_TWO_VALUES Vals)
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{
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return (Rel & Vals);
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}
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inline static HMM_RELATIONSHIP ReverseRoles(HMM_RELATIONSHIP Rel)
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{
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if(AdmitsValue(Rel, VALUE_ONLY_FIRST))
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{
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if(!AdmitsValue(Rel, VALUE_ONLY_SECOND))
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return (HMM_RELATIONSHIP)
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(Rel - VALUE_ONLY_FIRST + VALUE_ONLY_SECOND);
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}
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else if(AdmitsValue(Rel, VALUE_ONLY_SECOND))
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{
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return (HMM_RELATIONSHIP)
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(Rel - VALUE_ONLY_SECOND + VALUE_ONLY_FIRST);
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}
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return Rel;
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}
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inline static THREE_VALUED_BOOL ComputeOr(HMM_RELATIONSHIP Rel)
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{
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if(Rel == VALUE_BOTH_FALSE)
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return VALUE_FALSE;
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else if(AdmitsValue(Rel, VALUE_BOTH_FALSE))
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return VALUE_INDETERMINATE;
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else
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return VALUE_TRUE;
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}
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inline static THREE_VALUED_BOOL ComputeAnd(HMM_RELATIONSHIP Rel)
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{
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if(Rel == VALUE_BOTH_TRUE)
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return VALUE_TRUE;
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else if(AdmitsValue(Rel, VALUE_BOTH_TRUE))
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return VALUE_INDETERMINATE;
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else
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return VALUE_FALSE;
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}
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static inline HMM_RELATIONSHIP GetRelationshipOfFirstWithANDofSeconds(
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int nNumSeconds, HMM_RELATIONSHIP* aSeconds)
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{
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BOOL bBothTrue = TRUE;
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BOOL bOnlyFirst = FALSE;
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BOOL bOnlySecond = TRUE;
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BOOL bBothFalse = FALSE;
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for(int i = 0; i < nNumSeconds; i++)
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{
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bBothTrue &= AdmitsValue(aSeconds[i], VALUE_BOTH_TRUE);
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bOnlyFirst |= AdmitsValue(aSeconds[i], VALUE_ONLY_FIRST);
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bOnlySecond &= AdmitsValue(aSeconds[i], VALUE_ONLY_SECOND);
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bBothFalse |= AdmitsValue(aSeconds[i], VALUE_BOTH_FALSE);
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}
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int nResult = 0;
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if(bBothTrue) nResult += VALUE_BOTH_TRUE;
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if(bOnlyFirst) nResult += VALUE_ONLY_FIRST;
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if(bOnlySecond) nResult += VALUE_ONLY_SECOND;
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if(bBothFalse) nResult += VALUE_BOTH_FALSE;
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return (HMM_RELATIONSHIP)nResult;
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}
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static inline HMM_RELATIONSHIP GetRelationshipOfFirstWithORofSeconds(
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int nNumSeconds, HMM_RELATIONSHIP* aSeconds)
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{
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BOOL bBothTrue = FALSE;
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BOOL bOnlyFirst = TRUE;
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BOOL bOnlySecond = FALSE;
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BOOL bBothFalse = TRUE;
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for(int i = 0; i < nNumSeconds; i++)
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{
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bBothTrue |= AdmitsValue(aSeconds[i], VALUE_BOTH_TRUE);
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bOnlyFirst &= AdmitsValue(aSeconds[i], VALUE_ONLY_FIRST);
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bOnlySecond |= AdmitsValue(aSeconds[i], VALUE_ONLY_SECOND);
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bBothFalse &= AdmitsValue(aSeconds[i], VALUE_BOTH_FALSE);
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}
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int nResult = 0;
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if(bBothTrue) nResult += VALUE_BOTH_TRUE;
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if(bOnlyFirst) nResult += VALUE_ONLY_FIRST;
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if(bOnlySecond) nResult += VALUE_ONLY_SECOND;
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if(bBothFalse) nResult += VALUE_BOTH_FALSE;
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return (HMM_RELATIONSHIP)nResult;
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}
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};
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