prj/tech/libsrc/comtools/constrid.h

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // $Source: x:/prj/tech/libsrc/comtools/RCS/constrid.h $
   3 // $Author: TOML $
   4 // $Date: 1996/06/26 12:17:04 $
   5 // $Revision: 1.1 $
   6 //
   7
   8 #ifndef __CONSTRID_H
   9 #define __CONSTRID_H
  10
  11 ///////////////////////////////////////
  12 //
  13 // Fully specified constraint
  14 //
  15
  16 struct sAbsoluteConstraint
  17     {
  18     const GUID * pIDBefore;
  19     const GUID * pIDAfter;
  20     };
  21
  22 typedef struct sAbsoluteConstraint sAbsoluteConstraint;
  23
  24
  25 ///////////////////////////////////////
  26 //
  27 // Context-relative constraint kind
  28 //
  29
  30 enum eConstraintKind
  31    {
  32    kNullConstraint,
  33    kConstrainBefore,
  34    kConstrainAfter
  35    };
  36
  37 typedef enum eConstraintKind eConstraintKind;
  38
  39
  40 ///////////////////////////////////////
  41 //
  42 // Context-relative constraint
  43 //
  44
  45 struct sRelativeConstraint
  46    {
  47    eConstraintKind   kind;
  48    const GUID *      pIDAgainst;
  49    };
  50
  51 typedef struct sRelativeConstraint sRelativeConstraint;
  52
  53
  54 ///////////////////////////////////////
  55
  56 #ifdef __cplusplus
  57 inline void MakeAbsolute(const sRelativeConstraint & relative,
  58                          const GUID * pRelativeID,
  59                          sAbsoluteConstraint & absolute)
  60     {
  61     if (relative.kind == kConstrainBefore)
  62         {
  63         absolute.pIDBefore = pRelativeID;
  64         absolute.pIDAfter = relative.pIDAgainst;
  65         }
  66     else
  67         {
  68         absolute.pIDBefore = relative.pIDAgainst;
  69         absolute.pIDAfter = pRelativeID;
  70         }
  71     }
  72 #endif
  73
  74 ///////////////////////////////////////
  75
  76 #endif /* !__CONSTRID_H */