mirror of https://github.com/tongzx/nt5src
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.
124 lines
3.0 KiB
124 lines
3.0 KiB
/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
|
|
Copyright (c) 1989-1999 Microsoft Corporation
|
|
|
|
Module Name:
|
|
|
|
pungent.cxx
|
|
|
|
Abstract:
|
|
|
|
Implementations of the pointer cg class unmarshalling methods.
|
|
|
|
Notes:
|
|
|
|
The pointer unmarshalling is a bit tricky, so put into another file.
|
|
|
|
History:
|
|
|
|
Dec-10-1993 VibhasC Created
|
|
|
|
----------------------------------------------------------------------------*/
|
|
|
|
/****************************************************************************
|
|
* include files
|
|
***************************************************************************/
|
|
|
|
#include "becls.hxx"
|
|
#pragma hdrstop
|
|
/****************************************************************************
|
|
* local definitions
|
|
***************************************************************************/
|
|
/****************************************************************************
|
|
* local data
|
|
***************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* externs
|
|
***************************************************************************/
|
|
/****************************************************************************/
|
|
|
|
//
|
|
// This method is also supposed to init any embedded pointers.
|
|
//
|
|
|
|
CG_STATUS
|
|
CG_POINTER::GenAllocateForUnMarshall(
|
|
CCB * pCCB )
|
|
{
|
|
|
|
if( IsRef() )
|
|
{
|
|
Out_If_IfAllocRef(pCCB,
|
|
pCCB->GetDestExpression(),
|
|
pCCB->GetSourceExpression(),
|
|
// FinalSizeExpression( pCCB )
|
|
new expr_constant( 4L )
|
|
);
|
|
}
|
|
else
|
|
{
|
|
Out_If_IfAlloc(pCCB,
|
|
pCCB->GetDestExpression(),
|
|
pCCB->GetSourceExpression(),
|
|
// FinalSizeExpression( pCCB )
|
|
new expr_constant( 4L )
|
|
);
|
|
}
|
|
|
|
Out_Assign( pCCB,
|
|
MakeDereferentExpressionIfNecessary(pCCB->GetDestExpression()),
|
|
new expr_constant( 0L ) );
|
|
|
|
Out_Endif( pCCB );
|
|
return CG_OK;
|
|
}
|
|
|
|
void
|
|
CG_POINTER::PointerChecks(
|
|
CCB * pCCB )
|
|
{
|
|
short CILevel = pCCB->GetCurrentIndirectionLevel();
|
|
short CELevel = pCCB->GetCurrentEmbeddingLevel();
|
|
BOOL fClientSideTopLevelPtr = FALSE;
|
|
|
|
if( !IsRef() )
|
|
{
|
|
if( (pCCB->GetCodeGenSide() == CGSIDE_CLIENT ) && (CILevel == 0) &&
|
|
!pCCB->IsReturnContext()
|
|
)
|
|
fClientSideTopLevelPtr = TRUE;
|
|
|
|
if( fClientSideTopLevelPtr )
|
|
{
|
|
Out_Comment( pCCB, "(Check TopLevelPtrInBufferOnly )" );
|
|
Out_TLUPDecisionBufferOnly( pCCB,
|
|
pCCB->GetPtrToPtrInBuffer(),
|
|
MakeAddressOfPointer( pCCB->GetDestExpression() ) );
|
|
}
|
|
else if( CELevel == 0 )
|
|
{
|
|
Out_Comment( pCCB, "if( CheckTopLevelPtrInBufferAndMem )" );
|
|
Out_TLUPDecision( pCCB,
|
|
pCCB->GetPtrToPtrInBuffer(),
|
|
MakeAddressOfPointer(pCCB->GetDestExpression()));
|
|
}
|
|
else
|
|
{
|
|
Out_UPDecision( pCCB,
|
|
pCCB->GetPtrToPtrInBuffer(),
|
|
MakeAddressOfPointer(pCCB->GetDestExpression()));
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
CG_POINTER::EndPointerChecks(
|
|
CCB * pCCB )
|
|
{
|
|
|
|
// If it is a ref pointer, no checks were made in the first place.
|
|
|
|
if( !IsRef() )
|
|
Out_Endif( pCCB );
|
|
}
|
|
|