366 lines
18 KiB
C++
366 lines
18 KiB
C++
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/*++
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Copyright (c) 1994 Microsoft Corporation
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All rights reserved.
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Module Name:
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splutil.hxx
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Abstract:
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Common utils.
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Author:
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Albert Ting (AlbertT) 29-May-1994
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Revision History:
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--*/
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#ifndef _SPLUTIL_HXX
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#define _SPLUTIL_HXX
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//
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// Double linked list. DLINK must be the same as DLINKBASE, except
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// with differnt constructors.
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//
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typedef struct DLINK {
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DLINK()
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{ FLink = NULL; }
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DLINK* FLink;
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DLINK* BLink;
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} *PDLINK;
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typedef struct DLINKBASE {
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DLINKBASE()
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{ FLink = BLink = (PDLINK)this; }
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DLINK* FLink;
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DLINK* BLink;
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} *PDLINKBASE;
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class TIter {
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public:
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PDLINK _pdlink;
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PDLINK _pdlBase;
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BOOL
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bValid()
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{ return _pdlink != _pdlBase; }
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VOID
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vNext()
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{ _pdlink = _pdlink->FLink; }
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VOID
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vPrev()
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{ _pdlink = _pdlink->BLink; }
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operator PDLINK()
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{ return _pdlink; }
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};
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VOID
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LinkListDump(
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PDLINK pHead,
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DWORD offset,
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LPCSTR pcszType,
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LPCSTR pcszName
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);
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/********************************************************************
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// Forward reference.
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class TLink;
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TBase has two linked lists of TLink.
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class TBase {
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DLINK_BASE( TLink, Link, Link );
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DLINK_BASE( TLink, Link2, Link2 );
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};
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class TLink {
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DLINK( TLink, Link );
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DLINK( TLink, Link2 );
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};
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//
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// Append pLink to the end of the Link2 list.
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//
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pBase->Link2_vAppend( pLink );
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//
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// Insert pLinkInsert right after pLinkMiddle.
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//
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pBase->Link_vInsert( pLinkMiddle, pLinkInsert );
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//
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// Get to the head.
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//
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pLinkHead = pBase->Link_pHead();
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//
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// To get to the next element in the list.
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//
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pLink = pLinkHead->Link_pNext();
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//
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// Remove an element from the list.
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//
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pLink->pLink_vDelinkSelf();
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//
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// Using the iter class.
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//
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TIter Iter;
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for( Link_vIterInit( Iter ), Iter.vNext(); Iter.bValid(); Iter.vNext( )){
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//
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// Use pLink.
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//
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vLinkOperation( pLink );
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}
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********************************************************************/
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#define DLINK_BASE( type, name, linkname ) \
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VOID name##_vReset() \
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{ pdl##name()->FLink = pdl##name()->BLink = pdl##name(); } \
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\
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PDLINK name##_pdlHead() const \
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{ return pdl##name()->FLink; } \
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\
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PDLINK name##_pdlBase() const \
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{ return pdl##name(); } \
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\
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type* name##_pHead( VOID ) const \
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{ \
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return name##_bValid( name##_pdlHead() ) ? \
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(type*)((PBYTE)name##_pdlHead() - OFFSETOF( type, \
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_dl##linkname )) : \
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NULL; \
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} \
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\
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BOOL name##_bValid( PDLINK pdlink ) const \
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{ return pdlink != pdl##name(); } \
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\
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VOID name##_vAdd( type* pType ) \
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{ name##_vInsert( pdl##name(), pType->pdl##linkname( )); } \
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\
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VOID name##_vAppend( type* pType ) \
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{ name##_vInsert( pdl##name()->BLink, pType->pdl##linkname( )); } \
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\
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VOID name##_vInsert( PDLINK pdlink1, type* pType2 ) \
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{ name##_vInsert( pdlink1, pType2->pdl##linkname() ); } \
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\
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VOID name##_vInsert( PDLINK pdlink1, PDLINK pdlink2 ) \
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{ \
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SPLASSERT( !pdlink2->FLink ); \
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pdlink1->FLink->BLink = pdlink2; \
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\
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pdlink2->BLink = pdlink1; \
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pdlink2->FLink = pdlink1->FLink; \
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\
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pdlink1->FLink = pdlink2; \
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} \
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\
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VOID name##_vInsertBefore( PDLINK pdlink1, type* pType2 ) \
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{ name##_vInsertBefore( pdlink1, pType2->pdl##linkname() ); } \
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\
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VOID name##_vInsertBefore( PDLINK pdlink1, PDLINK pdlink2 ) \
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{ \
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SPLASSERT( !pdlink2->FLink ); \
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pdlink1->BLink->FLink = pdlink2; \
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\
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pdlink2->FLink = pdlink1; \
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pdlink2->BLink = pdlink1->BLink; \
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\
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pdlink1->BLink = pdlink2; \
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} \
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\
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VOID name##_vDelink( type* pType ) \
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{ name##_vDelink( pType->pdl##linkname( )); } \
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\
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VOID name##_vDelink( PDLINK pdlink ) \
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{ \
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pdlink->FLink->BLink = pdlink->BLink; \
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pdlink->BLink->FLink = pdlink->FLink; \
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pdlink->FLink = NULL; \
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} \
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\
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type* name##_pFind( type* pType ) const \
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{ \
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PDLINK pdlinkT; \
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PDLINK pdlink = pType->pdl##linkname(); \
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\
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for( pdlinkT = name##_pdlHead(); \
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name##_bValid( pdlinkT ); \
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pdlinkT = pdlinkT->FLink ){ \
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\
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if( pType->pdl##linkname() == pdlinkT ) \
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return (type*)((PBYTE)pdlink - OFFSETOF( type, \
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_dl##linkname )); \
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} \
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return NULL; \
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} \
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\
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PDLINK name##_pdlFind( PDLINK pdlink ) const \
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{ \
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PDLINK pdlinkT; \
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for( pdlinkT = name##_pdlHead(); \
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name##_bValid( pdlinkT ); \
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pdlinkT = pdlinkT->FLink ){ \
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\
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if( pdlink == pdlinkT ) \
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return pdlink; \
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} \
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return NULL; \
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} \
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\
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PDLINK name##_pdlGetByIndex( UINT uIndex ) const \
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{ \
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PDLINK pdlink; \
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for( pdlink = name##_pdlHead(); \
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uIndex; \
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uIndex--, pdlink = pdlink->FLink ){ \
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\
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SPLASSERT( name##_bValid( pdlink )); \
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} \
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return pdlink; \
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} \
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\
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type* name##_pGetByIndex( UINT uIndex ) const \
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{ \
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PDLINK pdlink; \
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for( pdlink = name##_pdlHead(); \
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uIndex; \
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uIndex--, pdlink = pdlink->FLink ){ \
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\
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SPLASSERT( name##_bValid( pdlink )); \
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} \
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return name##_pConvert( pdlink ); \
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} \
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\
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VOID name##_vDump( VOID ) const \
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{ \
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LinkListDump( pdl##name(), \
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OFFSETOF( type, _dl##linkname ), \
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#type, \
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#name ); \
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} \
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\
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static PDLINK name##_pdlNext( PDLINK pdlink ) \
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{ return pdlink->FLink; } \
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\
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static type* name##_pConvert( PDLINK pdlink ) \
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{ return (type*)( (PBYTE)pdlink - OFFSETOF( type, _dl##linkname )); } \
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\
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PDLINK pdl##name( VOID ) const \
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{ return (PDLINK)&_dlb##name; } \
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\
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BOOL name##_bEmpty() const \
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{ return pdl##name()->FLink == pdl##name(); } \
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\
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VOID name##_vIterInit( TIter& Iter ) const \
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{ Iter._pdlBase = Iter._pdlink = (PDLINK)&_dlb##name; } \
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\
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DLINKBASE _dlb##name;
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\
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#define DLINK( type, name ) \
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PDLINK pdl##name() \
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{ return &_dl##name; } \
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\
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VOID name##_vDelinkSelf( VOID ) \
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{ \
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_dl##name.FLink->BLink = _dl##name.BLink; \
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_dl##name.BLink->FLink = _dl##name.FLink; \
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_dl##name.FLink = NULL; \
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} \
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\
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BOOL name##_bLinked() const \
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{ return _dl##name.FLink != NULL; } \
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\
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PDLINK name##_pdlNext( VOID ) const \
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{ return _dl##name.FLink; } \
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\
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PDLINK name##_pdlPrev( VOID ) const \
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{ return _dl##name.BLink; } \
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\
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type* name##_pNext( VOID ) const \
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{ return name##_pConvert( _dl##name.FLink ); } \
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\
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type* name##_pPrev( VOID ) const \
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{ return name##_pConvert( _dl##name.BLink ); } \
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\
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static type* name##_pConvert( PDLINK pdlink ) \
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{ return (type*)( (PBYTE)pdlink - OFFSETOF( type, _dl##name )); } \
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\
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DLINK _dl##name
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//
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// Generic MEntry class that allows objects to be stored on a list
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// and searched by name.
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//
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class MEntry {
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SIGNATURE( 'entr' )
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public:
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DLINK( MEntry, Entry );
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TString _strName;
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BOOL bValid()
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{
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return _strName.bValid();
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}
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static MEntry* pFindEntry( PDLINK pdlink, LPCTSTR pszName );
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};
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#define ENTRY_BASE( type, name ) \
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friend MEntry; \
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type* name##_pFindByName( LPCTSTR pszName ) const \
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{ \
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MEntry* pEntry = MEntry::pFindEntry( name##_pdlBase(), pszName ); \
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return pEntry ? (type*)pEntry : NULL; \
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} \
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static type* name##_pConvertEntry( PDLINK pdlink ) \
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{ \
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return (type*)name##_pConvert( pdlink ); \
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} \
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DLINK_BASE( MEntry, name, Entry )
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#define DELETE_ENTRY_LIST( type, name ) \
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{ \
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PDLINK pdlink; \
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type* pType; \
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\
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for( pdlink = name##_pdlHead(); name##_bValid( pdlink ); ){ \
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\
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pType = name##_pConvertEntry( pdlink ); \
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pdlink = name##_pdlNext( pdlink ); \
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\
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pType->vDelete(); \
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} \
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}
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#endif // ndef _SPLUTIL_HXX
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