108 lines
2.6 KiB
C++
108 lines
2.6 KiB
C++
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/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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Copyright (c) 1989-1999 Microsoft Corporation
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Module Name:
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uniongen.cxx
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Abstract:
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union base in-line stuff.
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Notes:
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History:
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Jan-06-1994 VibhasC Created
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----------------------------------------------------------------------------*/
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/****************************************************************************
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* include files
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***************************************************************************/
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#include "becls.hxx"
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#pragma hdrstop
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/****************************************************************************
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* local definitions
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***************************************************************************/
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/****************************************************************************
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* local data
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***************************************************************************/
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/****************************************************************************
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* externs
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***************************************************************************/
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/****************************************************************************/
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CG_STATUS
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CG_UNION::S_GenInitOutLocals(
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CCB * pCCB )
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{
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char Buffer[ 256 ];
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RESOURCE * pResource;
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PNAME p;
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CG_NDR * pLPC = pCCB->GetLastPlaceholderClass();
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sprintf( Buffer, "%s", pLPC->GetType()->GetSymName() );
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p = pCCB->GenTRNameOffLastParam( Buffer );
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pResource = pCCB->GetLocalResource( p );
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// There is a pointer for the top level structure.
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Out_Assign( pCCB,
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pCCB->GetSourceExpression(),
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MakeAddressExpressionNoMatterWhat( pResource )
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);
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if( HasPointer() )
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{
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expr_node * pSrc = pCCB->GetSourceExpression();
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// BUGBUG: Embedded structure are not inited yet!!
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// It is enough to emit code to set just the first pointer field to
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// 0. Guess why ?. Base type fields need not be set to 0.
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expr_proc_call * pProc = new expr_proc_call( MIDL_MEMSET_RTN_NAME );
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pProc->SetParam( new expr_param( pSrc ) );
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pProc->SetParam( new expr_param( new expr_constant( 0L ) ) );
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pProc->SetParam( new expr_param( new expr_sizeof( GetType())));
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pCCB->GetStream()->NewLine();
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pProc->PrintCall( pCCB->GetStream(), 0, 0 );
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}
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return CG_OK;
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}
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short
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CG_UNION::GetPointerMembers(
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ITERATOR& I )
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{
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CG_ITERATOR M;
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CG_CASE * pCase;
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short Count = 0;
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if( HasPointer() )
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{
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GetMembers( M );
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while( ITERATOR_GETNEXT( M, pCase ) )
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{
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CG_FIELD * pField = (CG_FIELD *)pCase->GetChild();
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if((pCase->FLastCase()||(pCase->GetCGID() == ID_CG_DEFAULT_CASE))&&
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pField && (pField->GetChild()) &&
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pField->GetChild()->IsPointer() )
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{
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ITERATOR_INSERT( I, pField );
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Count++;
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}
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}
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}
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return Count;
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}
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