125 lines
3 KiB
C++
125 lines
3 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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pungent.cxx
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Abstract:
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Implementations of the pointer cg class unmarshalling methods.
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Notes:
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The pointer unmarshalling is a bit tricky, so put into another file.
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History:
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Dec-10-1993 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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//
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// This method is also supposed to init any embedded pointers.
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//
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CG_STATUS
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CG_POINTER::GenAllocateForUnMarshall(
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CCB * pCCB )
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{
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if( IsRef() )
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{
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Out_If_IfAllocRef(pCCB,
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pCCB->GetDestExpression(),
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pCCB->GetSourceExpression(),
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// FinalSizeExpression( pCCB )
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new expr_constant( 4L )
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);
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}
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else
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{
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Out_If_IfAlloc(pCCB,
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pCCB->GetDestExpression(),
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pCCB->GetSourceExpression(),
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// FinalSizeExpression( pCCB )
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new expr_constant( 4L )
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);
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}
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Out_Assign( pCCB,
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MakeDereferentExpressionIfNecessary(pCCB->GetDestExpression()),
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new expr_constant( 0L ) );
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Out_Endif( pCCB );
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return CG_OK;
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}
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void
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CG_POINTER::PointerChecks(
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CCB * pCCB )
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{
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short CILevel = pCCB->GetCurrentIndirectionLevel();
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short CELevel = pCCB->GetCurrentEmbeddingLevel();
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BOOL fClientSideTopLevelPtr = FALSE;
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if( !IsRef() )
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{
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if( (pCCB->GetCodeGenSide() == CGSIDE_CLIENT ) && (CILevel == 0) &&
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!pCCB->IsReturnContext()
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)
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fClientSideTopLevelPtr = TRUE;
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if( fClientSideTopLevelPtr )
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{
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Out_Comment( pCCB, "(Check TopLevelPtrInBufferOnly )" );
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Out_TLUPDecisionBufferOnly( pCCB,
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pCCB->GetPtrToPtrInBuffer(),
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MakeAddressOfPointer( pCCB->GetDestExpression() ) );
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}
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else if( CELevel == 0 )
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{
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Out_Comment( pCCB, "if( CheckTopLevelPtrInBufferAndMem )" );
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Out_TLUPDecision( pCCB,
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pCCB->GetPtrToPtrInBuffer(),
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MakeAddressOfPointer(pCCB->GetDestExpression()));
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}
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else
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{
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Out_UPDecision( pCCB,
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pCCB->GetPtrToPtrInBuffer(),
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MakeAddressOfPointer(pCCB->GetDestExpression()));
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}
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}
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}
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void
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CG_POINTER::EndPointerChecks(
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CCB * pCCB )
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{
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// If it is a ref pointer, no checks were made in the first place.
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if( !IsRef() )
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Out_Endif( pCCB );
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}
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