/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 * 
 * Copyright 2000, 2010 Oracle and/or its affiliates.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * This file is part of OpenOffice.org.
 *
 * OpenOffice.org is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * only, as published by the Free Software Foundation.
 *
 * OpenOffice.org is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with OpenOffice.org.  If not, see
 * <http://www.openoffice.org/license.html>
 * for a copy of the LGPLv3 License.
 *
 ************************************************************************/

// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_bridges.hxx"

#include <malloc.h>

#include <com/sun/star/uno/genfunc.hxx>
#include <uno/data.h>

#include "bridges/cpp_uno/shared/bridge.hxx"
#include "bridges/cpp_uno/shared/types.hxx"
#include "bridges/cpp_uno/shared/unointerfaceproxy.hxx"
#include "bridges/cpp_uno/shared/vtables.hxx"

#include "msci.hxx"

using namespace ::rtl;
using namespace ::com::sun::star::uno;

namespace
{

//==================================================================================================
inline static void callVirtualMethod(
	void * pAdjustedThisPtr, sal_Int32 nVtableIndex,
	void * pRegisterReturn, typelib_TypeClass eReturnTypeClass,
	sal_Int32 * pStackLongs, sal_Int32 nStackLongs )
{
	// parameter list is mixed list of * and values
	// reference parameters are pointers

	OSL_ENSURE( pStackLongs && pAdjustedThisPtr, "### null ptr!" );
	OSL_ENSURE( (sizeof(void *) == 4) &&
				 (sizeof(sal_Int32) == 4), "### unexpected size of int!" );
	
__asm
	{
		mov		eax, nStackLongs
		test	eax, eax
		je		Lcall
		// copy values
		mov		ecx, eax
		shl		eax, 2			 // sizeof(sal_Int32) == 4
		add		eax, pStackLongs // params stack space
Lcopy:	sub		eax, 4
		push	dword ptr [eax]
		dec		ecx
		jne		Lcopy
Lcall:
		// call
		mov		ecx, pAdjustedThisPtr
		push	ecx				// this ptr
		mov		edx, [ecx]		// pvft
		mov		eax, nVtableIndex
		shl		eax, 2			// sizeof(void *) == 4
		add		edx, eax
		call	[edx]			// interface method call must be __cdecl!!!

		// register return
		mov		ecx, eReturnTypeClass
		cmp		ecx, typelib_TypeClass_VOID
		je		Lcleanup
		mov		ebx, pRegisterReturn
// int32
		cmp		ecx, typelib_TypeClass_LONG
		je		Lint32
		cmp		ecx, typelib_TypeClass_UNSIGNED_LONG
		je		Lint32
		cmp		ecx, typelib_TypeClass_ENUM
		je		Lint32
// int8
		cmp		ecx, typelib_TypeClass_BOOLEAN
		je		Lint8
		cmp		ecx, typelib_TypeClass_BYTE
		je		Lint8
// int16
		cmp		ecx, typelib_TypeClass_CHAR
		je		Lint16
		cmp		ecx, typelib_TypeClass_SHORT
		je		Lint16
		cmp		ecx, typelib_TypeClass_UNSIGNED_SHORT
		je		Lint16
// float
		cmp		ecx, typelib_TypeClass_FLOAT
		je		Lfloat
// double
		cmp		ecx, typelib_TypeClass_DOUBLE
		je		Ldouble
// int64
		cmp		ecx, typelib_TypeClass_HYPER
		je		Lint64
		cmp		ecx, typelib_TypeClass_UNSIGNED_HYPER
  		je		Lint64
		jmp		Lcleanup // no simple type
Lint8:
		mov		byte ptr [ebx], al
		jmp		Lcleanup
Lint16:
		mov		word ptr [ebx], ax
		jmp		Lcleanup
Lfloat:
		fstp	dword ptr [ebx]
		jmp		Lcleanup
Ldouble:
		fstp	qword ptr [ebx]
		jmp		Lcleanup
Lint64:
		mov		dword ptr [ebx], eax
		mov		dword ptr [ebx+4], edx
		jmp		Lcleanup
Lint32:
		mov		dword ptr [ebx], eax
		jmp		Lcleanup
Lcleanup:
		// cleanup stack (obsolete though because of function)
		mov		eax, nStackLongs
		shl		eax, 2			// sizeof(sal_Int32) == 4
		add		eax, 4			// this ptr
		add		esp, eax
	}
}

//==================================================================================================
static void cpp_call(
	bridges::cpp_uno::shared::UnoInterfaceProxy * pThis,
	bridges::cpp_uno::shared::VtableSlot aVtableSlot,
	typelib_TypeDescriptionReference * pReturnTypeRef,
	sal_Int32 nParams, typelib_MethodParameter * pParams,
	void * pUnoReturn, void * pUnoArgs[], uno_Any ** ppUnoExc ) throw ()
{
	// max space for: [complex ret ptr], values|ptr ...
	char * pCppStack		= (char *)alloca( sizeof(sal_Int32) + (nParams * sizeof(sal_Int64)) );
	char * pCppStackStart	= pCppStack;
	
	// return
	typelib_TypeDescription * pReturnTypeDescr = 0;
	TYPELIB_DANGER_GET( &pReturnTypeDescr, pReturnTypeRef );
	OSL_ENSURE( pReturnTypeDescr, "### expected return type description!" );
	
	void * pCppReturn = 0; // if != 0 && != pUnoReturn, needs reconversion
	
	if (pReturnTypeDescr)
	{
		if (bridges::cpp_uno::shared::isSimpleType( pReturnTypeDescr ))
		{
			pCppReturn = pUnoReturn; // direct way for simple types
		}
		else
		{
			// complex return via ptr
			pCppReturn = *(void **)pCppStack
                = (bridges::cpp_uno::shared::relatesToInterfaceType(
                       pReturnTypeDescr )
                   ? alloca( pReturnTypeDescr->nSize )
                   : pUnoReturn); // direct way
			pCppStack += sizeof(void *);
		}
	}

	// stack space

	OSL_ENSURE( sizeof(void *) == sizeof(sal_Int32), "### unexpected size!" );
	// args
	void ** pCppArgs  = (void **)alloca( 3 * sizeof(void *) * nParams );
	// indizes of values this have to be converted (interface conversion cpp<=>uno)
	sal_Int32 * pTempIndizes = (sal_Int32 *)(pCppArgs + nParams);
	// type descriptions for reconversions
	typelib_TypeDescription ** ppTempParamTypeDescr = (typelib_TypeDescription **)(pCppArgs + (2 * nParams));
	
	sal_Int32 nTempIndizes   = 0;
	
	for ( sal_Int32 nPos = 0; nPos < nParams; ++nPos )
	{
		const typelib_MethodParameter & rParam = pParams[nPos];
		typelib_TypeDescription * pParamTypeDescr = 0;
		TYPELIB_DANGER_GET( &pParamTypeDescr, rParam.pTypeRef );
		
		if (!rParam.bOut
            && bridges::cpp_uno::shared::isSimpleType( pParamTypeDescr ))
		{
			::uno_copyAndConvertData(
                pCppArgs[nPos] = pCppStack, pUnoArgs[nPos], pParamTypeDescr,
                pThis->getBridge()->getUno2Cpp() );
			
			switch (pParamTypeDescr->eTypeClass)
			{
			case typelib_TypeClass_HYPER:
			case typelib_TypeClass_UNSIGNED_HYPER:
			case typelib_TypeClass_DOUBLE:
				pCppStack += sizeof(sal_Int32); // extra long
                break;
            default:
                break;
			}
			// no longer needed
			TYPELIB_DANGER_RELEASE( pParamTypeDescr );
		}
		else // ptr to complex value | ref
		{
			if (! rParam.bIn) // is pure out
			{
				// cpp out is constructed mem, uno out is not!
				::uno_constructData(
					*(void **)pCppStack = pCppArgs[nPos] = alloca( pParamTypeDescr->nSize ),
					pParamTypeDescr );
				pTempIndizes[nTempIndizes] = nPos; // default constructed for cpp call
				// will be released at reconversion
				ppTempParamTypeDescr[nTempIndizes++] = pParamTypeDescr;
			}
			// is in/inout
			else if (bridges::cpp_uno::shared::relatesToInterfaceType(
                         pParamTypeDescr ))
			{
				::uno_copyAndConvertData(
					*(void **)pCppStack = pCppArgs[nPos] = alloca( pParamTypeDescr->nSize ),
					pUnoArgs[nPos], pParamTypeDescr,
					pThis->getBridge()->getUno2Cpp() );
				
				pTempIndizes[nTempIndizes] = nPos; // has to be reconverted
				// will be released at reconversion
				ppTempParamTypeDescr[nTempIndizes++] = pParamTypeDescr;
			}
			else // direct way
			{
				*(void **)pCppStack = pCppArgs[nPos] = pUnoArgs[nPos];
				// no longer needed
				TYPELIB_DANGER_RELEASE( pParamTypeDescr );
			}
		}
		pCppStack += sizeof(sal_Int32); // standard parameter length
	}

    __try
    {
        // pCppI is msci this pointer
        callVirtualMethod(
            reinterpret_cast< void ** >(pThis->getCppI()) + aVtableSlot.offset,
            aVtableSlot.index,
            pCppReturn, pReturnTypeDescr->eTypeClass,
            (sal_Int32 *)pCppStackStart,
            (pCppStack - pCppStackStart) / sizeof(sal_Int32) );
    }
    __except (CPPU_CURRENT_NAMESPACE::msci_filterCppException(
                  GetExceptionInformation(),
                  *ppUnoExc, pThis->getBridge()->getCpp2Uno() ))
   {
        // *ppUnoExc was constructed by filter function
        // temporary params
        while (nTempIndizes--)
        {
            sal_Int32 nIndex = pTempIndizes[nTempIndizes];
            // destroy temp cpp param => cpp: every param was constructed
            ::uno_destructData(
                pCppArgs[nIndex], ppTempParamTypeDescr[nTempIndizes],
                cpp_release );
            TYPELIB_DANGER_RELEASE( ppTempParamTypeDescr[nTempIndizes] );
        }
		// return type
		if (pReturnTypeDescr)
        {
			TYPELIB_DANGER_RELEASE( pReturnTypeDescr );
        }
        // end here
        return;
	}
    
    // NO exception occured
    *ppUnoExc = 0;
    
    // reconvert temporary params
    while (nTempIndizes--)
    {
        sal_Int32 nIndex = pTempIndizes[nTempIndizes];
        typelib_TypeDescription * pParamTypeDescr =
            ppTempParamTypeDescr[nTempIndizes];
        
        if (pParams[nIndex].bIn)
        {
            if (pParams[nIndex].bOut) // inout
            {
                ::uno_destructData(
                    pUnoArgs[nIndex], pParamTypeDescr, 0 ); // destroy uno value
                ::uno_copyAndConvertData(
                    pUnoArgs[nIndex], pCppArgs[nIndex], pParamTypeDescr,
                    pThis->getBridge()->getCpp2Uno() );
            }
        }
        else // pure out
        {
            ::uno_copyAndConvertData(
                pUnoArgs[nIndex], pCppArgs[nIndex], pParamTypeDescr,
                pThis->getBridge()->getCpp2Uno() );
        }
        // destroy temp cpp param => cpp: every param was constructed
        ::uno_destructData(
            pCppArgs[nIndex], pParamTypeDescr, cpp_release );
        
        TYPELIB_DANGER_RELEASE( pParamTypeDescr );
    }
    // return value
    if (pCppReturn && pUnoReturn != pCppReturn)
    {
        ::uno_copyAndConvertData(
            pUnoReturn, pCppReturn, pReturnTypeDescr,
            pThis->getBridge()->getCpp2Uno() );
        ::uno_destructData(
            pCppReturn, pReturnTypeDescr, cpp_release );
    }
    // return type
    if (pReturnTypeDescr)
    {
        TYPELIB_DANGER_RELEASE( pReturnTypeDescr );
    }
}

}

namespace bridges { namespace cpp_uno { namespace shared {

void unoInterfaceProxyDispatch(
	uno_Interface * pUnoI, const typelib_TypeDescription * pMemberDescr,
    void * pReturn, void * pArgs[], uno_Any ** ppException )
{
	// is my surrogate
	bridges::cpp_uno::shared::UnoInterfaceProxy * pThis
        = static_cast< bridges::cpp_uno::shared::UnoInterfaceProxy * >(pUnoI);
	
	switch (pMemberDescr->eTypeClass)
	{
	case typelib_TypeClass_INTERFACE_ATTRIBUTE:
	{
        VtableSlot aVtableSlot(
            getVtableSlot(
                reinterpret_cast<
                    typelib_InterfaceAttributeTypeDescription const * >(
                        pMemberDescr)));
		if (pReturn)
		{
			// dependent dispatch
			cpp_call(
				pThis, aVtableSlot,
				((typelib_InterfaceAttributeTypeDescription *)pMemberDescr)->pAttributeTypeRef,
				0, 0, // no params
				pReturn, pArgs, ppException );
		}
		else
		{
			// is SET
			typelib_MethodParameter aParam;
			aParam.pTypeRef =
				((typelib_InterfaceAttributeTypeDescription *)pMemberDescr)->pAttributeTypeRef;
			aParam.bIn		= sal_True;
			aParam.bOut		= sal_False;
			
			typelib_TypeDescriptionReference * pReturnTypeRef = 0;
			OUString aVoidName( RTL_CONSTASCII_USTRINGPARAM("void") );
			typelib_typedescriptionreference_new(
				&pReturnTypeRef, typelib_TypeClass_VOID, aVoidName.pData );
			
			// dependent dispatch
            aVtableSlot.index += 1; // get, then set method
			cpp_call(
				pThis, aVtableSlot,
				pReturnTypeRef,
				1, &aParam,
				pReturn, pArgs, ppException );
			
			typelib_typedescriptionreference_release( pReturnTypeRef );
		}
		
		break;
	}
	case typelib_TypeClass_INTERFACE_METHOD:
	{
        VtableSlot aVtableSlot(
            getVtableSlot(
                reinterpret_cast<
                    typelib_InterfaceMethodTypeDescription const * >(
                        pMemberDescr)));
		switch (aVtableSlot.index)
		{
			// standard calls
		case 1: // acquire uno interface
			(*pUnoI->acquire)( pUnoI );
			*ppException = 0;
			break;
		case 2: // release uno interface
			(*pUnoI->release)( pUnoI );
			*ppException = 0;
			break;
		case 0: // queryInterface() opt
		{
			typelib_TypeDescription * pTD = 0;
			TYPELIB_DANGER_GET( &pTD, reinterpret_cast< Type * >( pArgs[0] )->getTypeLibType() );
			if (pTD)
            {
                uno_Interface * pInterface = 0;
                (*pThis->pBridge->getUnoEnv()->getRegisteredInterface)(
                    pThis->pBridge->getUnoEnv(),
                    (void **)&pInterface, pThis->oid.pData, (typelib_InterfaceTypeDescription *)pTD );
			
                if (pInterface)
                {
                    ::uno_any_construct(
                        reinterpret_cast< uno_Any * >( pReturn ),
                        &pInterface, pTD, 0 );
                    (*pInterface->release)( pInterface );
                    TYPELIB_DANGER_RELEASE( pTD );
                    *ppException = 0;
                    break;
                }
                TYPELIB_DANGER_RELEASE( pTD );
            }
		} // else perform queryInterface()
		default:
			// dependent dispatch
			cpp_call(
				pThis, aVtableSlot,
				((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->pReturnTypeRef,
				((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->nParams,
				((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->pParams,
				pReturn, pArgs, ppException );
		}
		break;
	}
	default:
	{
		::com::sun::star::uno::RuntimeException aExc(
			OUString( RTL_CONSTASCII_USTRINGPARAM("illegal member type description!") ),
			::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface >() );
		
		Type const & rExcType = ::getCppuType( &aExc );
		// binary identical null reference
		::uno_type_any_construct( *ppException, &aExc, rExcType.getTypeLibType(), 0 );
	}
	}
}

} } }