You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
185 lines
5.2 KiB
185 lines
5.2 KiB
/*++
|
|
|
|
Copyright (c) 1990 Microsoft Corporation
|
|
|
|
Module Name:
|
|
|
|
clasdesc.hxx
|
|
|
|
Abstract:
|
|
|
|
This module contains the declaration for the CLASS_DESCRIPTOR class.
|
|
A CLASS_DESCRIPTOR contains informatiom to help identify an object's
|
|
type at run-time. It is a concrete class which is associated with all
|
|
other concrete classes (i.e. there is one instance of a CLASS_DESCRIPTOR
|
|
for every concrete class in Ulib). The most important aspect of a
|
|
CLASS_DESCRIPTOR is that it supplies a guaranteed unique id for the class
|
|
that it decsribes.
|
|
|
|
Author:
|
|
|
|
David J. Gilman (davegi) 26-Oct-1990
|
|
|
|
Environment:
|
|
|
|
ULIB, User Mode
|
|
|
|
Notes:
|
|
|
|
--*/
|
|
|
|
#if ! defined( _CLASS_DESCRIPTOR_ )
|
|
|
|
#define _CLASS_DESCRIPTOR_
|
|
|
|
//
|
|
// Forward references
|
|
//
|
|
|
|
DECLARE_CLASS( CLASS_DESCRIPTOR );
|
|
|
|
|
|
#define UNDEFINE_CLASS_DESCRIPTOR( c ) delete (PCLASS_DESCRIPTOR) c##_cd, c##_cd = 0
|
|
|
|
#if DBG==1
|
|
|
|
//
|
|
// Define a CLASS_DESCRIPTOR in the file ulib.cxx. The name will be
|
|
// the same as the type name for the associated class.
|
|
//
|
|
|
|
#define DEFINE_CLASS_DESCRIPTOR( c ) \
|
|
((( c##_cd = NEW CLASS_DESCRIPTOR ) != NULL ) && \
|
|
((( PCLASS_DESCRIPTOR ) c##_cd )->Initialize(( PCCLASS_NAME ) #c )))
|
|
|
|
#define CLASS_DESCRIPTOR_INITIALIZE \
|
|
NONVIRTUAL \
|
|
ULIB_EXPORT \
|
|
BOOLEAN \
|
|
Initialize ( \
|
|
IN PCCLASS_NAME ClassName \
|
|
)
|
|
|
|
//
|
|
// For debugging purposes, CLASS_DESCRIPTOR stores the name of the class
|
|
// that it describes.
|
|
//
|
|
// NOTE - DebugGetClassName is declared for both CLASS_DESCRIPTOR and
|
|
// OBJECT. See the note at the end of this module.
|
|
//
|
|
|
|
//
|
|
// Maximum length for the name of a class
|
|
//
|
|
|
|
CONST _MaxClassNameLength = 20;
|
|
|
|
#define DECLARE_CD_DBG_DATA \
|
|
CLASS_NAME _ClassName[ _MaxClassNameLength ]
|
|
|
|
#define DECLARE_CD_DBG_FUNCTIONS \
|
|
NONVIRTUAL \
|
|
PCCLASS_NAME \
|
|
DebugGetClassName ( \
|
|
) CONST
|
|
|
|
#define DEFINE_CD_INLINE_DBG_FUNCTIONS \
|
|
\
|
|
inline \
|
|
PCCLASS_NAME \
|
|
CLASS_DESCRIPTOR::DebugGetClassName ( \
|
|
) CONST \
|
|
{ \
|
|
return(( PCCLASS_NAME ) _ClassName );\
|
|
}
|
|
|
|
#define DbgGetClassName( pobj ) \
|
|
( pobj )->DebugGetClassName( )
|
|
#else // DBG == 0
|
|
|
|
#define DEFINE_CLASS_DESCRIPTOR( c ) \
|
|
((( c##_cd = NEW CLASS_DESCRIPTOR ) != NULL ) && \
|
|
((( PCLASS_DESCRIPTOR ) c##_cd )->Initialize( )))
|
|
|
|
#define CLASS_DESCRIPTOR_INITIALIZE \
|
|
NONVIRTUAL \
|
|
ULIB_EXPORT \
|
|
BOOLEAN \
|
|
Initialize ( \
|
|
)
|
|
|
|
#define DECLARE_CD_DBG_DATA \
|
|
static char d
|
|
|
|
#define DECLARE_CD_DBG_FUNCTIONS \
|
|
void f(void){}
|
|
|
|
#define DEFINE_CD_INLINE_DBG_FUNCTIONS \
|
|
inline void f(void){}
|
|
|
|
#define DbgGetClassName( pobj )
|
|
|
|
#endif // DBG
|
|
|
|
class CLASS_DESCRIPTOR {
|
|
|
|
friend
|
|
BOOLEAN
|
|
InitializeUlib(
|
|
IN HANDLE DllHandle,
|
|
IN ULONG Reason,
|
|
IN PVOID Reserved
|
|
);
|
|
|
|
public:
|
|
|
|
ULIB_EXPORT
|
|
CLASS_DESCRIPTOR(
|
|
);
|
|
|
|
CLASS_DESCRIPTOR_INITIALIZE;
|
|
|
|
NONVIRTUAL
|
|
CLASS_ID
|
|
QueryClassId (
|
|
) CONST;
|
|
|
|
DECLARE_CD_DBG_FUNCTIONS;
|
|
|
|
private:
|
|
|
|
DECLARE_CD_DBG_DATA;
|
|
|
|
CLASS_ID _ClassID;
|
|
};
|
|
|
|
|
|
INLINE
|
|
CLASS_ID
|
|
CLASS_DESCRIPTOR::QueryClassId (
|
|
) CONST
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Return the CLASSID for the object described by this CLASS_DESCRIPTOR.
|
|
|
|
Arguments:
|
|
|
|
None.
|
|
|
|
Return Value:
|
|
|
|
CLASSID - The CLASSID as maintained by this CLASS_DESCRIPTOR.
|
|
|
|
--*/
|
|
|
|
{
|
|
return( _ClassID );
|
|
}
|
|
|
|
|
|
DEFINE_CD_INLINE_DBG_FUNCTIONS;
|
|
|
|
#endif // CLASS_DESCRIPTOR
|