Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 585 insertions, 0 deletions

diff --git a/basic/source/comp/codegen.cxx b/basic/source/comp/codegen.cxx
new file mode 100644
index 000000000..9f2f4960b
--- /dev/null
+++ b/basic/source/comp/codegen.cxx
@@ -0,0 +1,585 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+
+#include <basic/sberrors.hxx>
+#include <basic/sbx.hxx>
+#include <basic/sbmeth.hxx>
+#include <basic/sbmod.hxx>
+#include <image.hxx>
+#include <codegen.hxx>
+#include <parser.hxx>
+#include <sbintern.hxx>
+#include <cstddef>
+#include <limits>
+#include <algorithm>
+#include <osl/diagnose.h>
+#include <rtl/ustrbuf.hxx>
+#include <o3tl/string_view.hxx>
+#include <com/sun/star/script/ModuleType.hpp>
+
+// nInc is the increment size of the buffers
+
+SbiCodeGen::SbiCodeGen(SbModule& r, SbiParser* p)
+    : pParser(p)
+    , rMod(r)
+    , nLine(0)
+    , nCol(0)
+    , nForLevel(0)
+    , bStmnt(false)
+{
+}
+
+sal_uInt32 SbiCodeGen::GetPC() const
+{
+    return aCode.GetSize();
+}
+
+// memorize the statement
+
+void SbiCodeGen::Statement()
+{
+    if( pParser->IsCodeCompleting() )
+        return;
+
+    bStmnt = true;
+
+    nLine = pParser->GetLine();
+    nCol  = pParser->GetCol1();
+
+    // #29955 Store the information of the for-loop-layer
+    // in the upper Byte of the column
+    nCol = (nCol & 0xff) + 0x100 * nForLevel;
+}
+
+// Mark the beginning of a statement
+
+void SbiCodeGen::GenStmnt()
+{
+    if( pParser->IsCodeCompleting() )
+        return;
+
+    if( bStmnt )
+    {
+        bStmnt = false;
+        Gen( SbiOpcode::STMNT_, nLine, nCol );
+    }
+}
+
+// The Gen-Routines return the offset of the 1. operand,
+// so that jumps can sink their backchain there.
+
+sal_uInt32 SbiCodeGen::Gen( SbiOpcode eOpcode )
+{
+    if( pParser->IsCodeCompleting() )
+        return 0;
+
+#ifdef DBG_UTIL
+    if( eOpcode < SbiOpcode::SbOP0_START || eOpcode > SbiOpcode::SbOP0_END )
+        pParser->Error( ERRCODE_BASIC_INTERNAL_ERROR, "OPCODE1" );
+#endif
+    GenStmnt();
+    aCode += static_cast<sal_uInt8>(eOpcode);
+    return GetPC();
+}
+
+sal_uInt32 SbiCodeGen::Gen( SbiOpcode eOpcode, sal_uInt32 nOpnd )
+{
+    if( pParser->IsCodeCompleting() )
+        return 0;
+
+#ifdef DBG_UTIL
+    if( eOpcode < SbiOpcode::SbOP1_START || eOpcode > SbiOpcode::SbOP1_END )
+        pParser->Error( ERRCODE_BASIC_INTERNAL_ERROR, "OPCODE2" );
+#endif
+    GenStmnt();
+    aCode += static_cast<sal_uInt8>(eOpcode);
+    sal_uInt32 n = GetPC();
+    aCode += nOpnd;
+    return n;
+}
+
+sal_uInt32 SbiCodeGen::Gen( SbiOpcode eOpcode, sal_uInt32 nOpnd1, sal_uInt32 nOpnd2 )
+{
+    if( pParser->IsCodeCompleting() )
+        return 0;
+
+#ifdef DBG_UTIL
+    if( eOpcode < SbiOpcode::SbOP2_START || eOpcode > SbiOpcode::SbOP2_END )
+        pParser->Error( ERRCODE_BASIC_INTERNAL_ERROR, "OPCODE3" );
+#endif
+    GenStmnt();
+    aCode += static_cast<sal_uInt8>(eOpcode);
+    sal_uInt32 n = GetPC();
+    aCode += nOpnd1;
+    aCode += nOpnd2;
+    return n;
+}
+
+// Storing of the created image in the module
+
+void SbiCodeGen::Save()
+{
+    if( pParser->IsCodeCompleting() )
+        return;
+
+    std::unique_ptr<SbiImage> p(new SbiImage);
+    rMod.StartDefinitions();
+    // OPTION BASE-Value:
+    p->nDimBase = pParser->nBase;
+    // OPTION take over the EXPLICIT-Flag
+    if( pParser->bExplicit )
+        p->SetFlag( SbiImageFlags::EXPLICIT );
+
+    int nIfaceCount = 0;
+    if( rMod.mnType == css::script::ModuleType::CLASS )
+    {
+        rMod.bIsProxyModule = true;
+        p->SetFlag( SbiImageFlags::CLASSMODULE );
+        GetSbData()->pClassFac->AddClassModule( &rMod );
+
+        nIfaceCount = pParser->aIfaceVector.size();
+        if( !rMod.pClassData )
+            rMod.pClassData.reset(new SbClassData);
+        if( nIfaceCount )
+        {
+            for( int i = 0 ; i < nIfaceCount ; i++ )
+            {
+                const OUString& rIfaceName = pParser->aIfaceVector[i];
+                SbxVariable* pIfaceVar = new SbxVariable( SbxVARIANT );
+                pIfaceVar->SetName( rIfaceName );
+                SbxArray* pIfaces = rMod.pClassData->mxIfaces.get();
+                pIfaces->Insert( pIfaceVar, pIfaces->Count() );
+            }
+        }
+
+        rMod.pClassData->maRequiredTypes = pParser->aRequiredTypes;
+    }
+    else
+    {
+        GetSbData()->pClassFac->RemoveClassModule( &rMod );
+        // Only a ClassModule can revert to Normal
+        if ( rMod.mnType == css::script::ModuleType::CLASS )
+        {
+            rMod.mnType = css::script::ModuleType::NORMAL;
+        }
+        rMod.bIsProxyModule = false;
+    }
+
+    // GlobalCode-Flag
+    if( pParser->HasGlobalCode() )
+    {
+        p->SetFlag( SbiImageFlags::INITCODE );
+    }
+    // The entry points:
+    for( SbiSymDef* pDef = pParser->aPublics.First(); pDef;
+         pDef = pParser->aPublics.Next() )
+    {
+        SbiProcDef* pProc = pDef->GetProcDef();
+        if( pProc && pProc->IsDefined() )
+        {
+            OUString aProcName = pProc->GetName();
+            OUStringBuffer aIfaceProcName;
+            OUString aIfaceName;
+            sal_uInt16 nPassCount = 1;
+            if( nIfaceCount )
+            {
+                int nPropPrefixFound = aProcName.indexOf("Property ");
+                std::u16string_view aPureProcName = aProcName;
+                std::u16string_view aPropPrefix;
+                if( nPropPrefixFound == 0 )
+                {
+                    aPropPrefix = aProcName.subView( 0, 13 );      // 13 == Len( "Property ?et " )
+                    aPureProcName = aProcName.subView( 13 );
+                }
+                for( int i = 0 ; i < nIfaceCount ; i++ )
+                {
+                    const OUString& rIfaceName = pParser->aIfaceVector[i];
+                    bool bFound = o3tl::starts_with(aPureProcName, rIfaceName );
+                    if( bFound && aPureProcName[rIfaceName.getLength()] == '_' )
+                    {
+                        if( nPropPrefixFound == 0 )
+                        {
+                            aIfaceProcName.append(aPropPrefix);
+                        }
+                        aIfaceProcName.append(aPureProcName.substr(rIfaceName.getLength() + 1) );
+                        aIfaceName = rIfaceName;
+                        nPassCount = 2;
+                        break;
+                    }
+                }
+            }
+            SbMethod* pMeth = nullptr;
+            for( sal_uInt16 nPass = 0 ; nPass < nPassCount ; nPass++ )
+            {
+                if( nPass == 1 )
+                {
+                    aProcName = aIfaceProcName.toString();
+                }
+                PropertyMode ePropMode = pProc->getPropertyMode();
+                if( ePropMode != PropertyMode::NONE )
+                {
+                    SbxDataType ePropType = SbxEMPTY;
+                    switch( ePropMode )
+                    {
+                    case PropertyMode::Get:
+                        ePropType = pProc->GetType();
+                        break;
+                    case PropertyMode::Let:
+                    {
+                        // type == type of first parameter
+                        ePropType = SbxVARIANT;     // Default
+                        SbiSymPool* pPool = &pProc->GetParams();
+                        if( pPool->GetSize() > 1 )
+                        {
+                            SbiSymDef* pPar = pPool->Get( 1 );
+                            if( pPar )
+                            {
+                                ePropType = pPar->GetType();
+                            }
+                        }
+                        break;
+                    }
+                    case PropertyMode::Set:
+                        ePropType = SbxOBJECT;
+                        break;
+                    default:
+                        OSL_FAIL("Illegal PropertyMode");
+                        break;
+                    }
+                    OUString aPropName = pProc->GetPropName();
+                    if( nPass == 1 )
+                    {
+                        aPropName = aPropName.copy( aIfaceName.getLength() + 1 );
+                    }
+                    rMod.GetProcedureProperty( aPropName, ePropType );
+                }
+                if( nPass == 1 )
+                {
+                    rMod.GetIfaceMapperMethod( aProcName, pMeth );
+                }
+                else
+                {
+                    pMeth = rMod.GetMethod( aProcName, pProc->GetType() );
+
+                    if( !pProc->IsPublic() )
+                    {
+                        pMeth->SetFlag( SbxFlagBits::Private );
+                    }
+                    // Declare? -> Hidden
+                    if( !pProc->GetLib().isEmpty())
+                    {
+                        pMeth->SetFlag( SbxFlagBits::Hidden );
+                    }
+                    pMeth->nStart = pProc->GetAddr();
+                    pMeth->nLine1 = pProc->GetLine1();
+                    pMeth->nLine2 = pProc->GetLine2();
+                    // The parameter:
+                    SbxInfo* pInfo = pMeth->GetInfo();
+                    OUString aHelpFile, aComment;
+                    sal_uInt32 nHelpId = 0;
+                    if( pInfo )
+                    {
+                        // Rescue the additional data
+                        aHelpFile = pInfo->GetHelpFile();
+                        aComment  = pInfo->GetComment();
+                        nHelpId   = pInfo->GetHelpId();
+                    }
+                    // And reestablish the parameter list
+                    pInfo = new SbxInfo( aHelpFile, nHelpId );
+                    pInfo->SetComment( aComment );
+                    SbiSymPool* pPool = &pProc->GetParams();
+                    // The first element is always the value of the function!
+                    for( sal_uInt16 i = 1; i < pPool->GetSize(); i++ )
+                    {
+                        SbiSymDef* pPar = pPool->Get( i );
+                        SbxDataType t = pPar->GetType();
+                        if( !pPar->IsByVal() )
+                        {
+                            t = static_cast<SbxDataType>( t | SbxBYREF );
+                        }
+                        if( pPar->GetDims() )
+                        {
+                            t = static_cast<SbxDataType>( t | SbxARRAY );
+                        }
+                        // #33677 hand-over an Optional-Info
+                        SbxFlagBits nFlags = SbxFlagBits::Read;
+                        if( pPar->IsOptional() )
+                        {
+                            nFlags |= SbxFlagBits::Optional;
+                        }
+                        pInfo->AddParam( pPar->GetName(), t, nFlags );
+
+                        sal_uInt32 nUserData = 0;
+                        sal_uInt16 nDefaultId = pPar->GetDefaultId();
+                        if( nDefaultId )
+                        {
+                            nUserData |= nDefaultId;
+                        }
+                        if( pPar->IsParamArray() )
+                        {
+                            nUserData |= PARAM_INFO_PARAMARRAY;
+                        }
+                        if( pPar->IsWithBrackets() )
+                        {
+                            nUserData |= PARAM_INFO_WITHBRACKETS;
+                        }
+                        SbxParamInfo* pParam = nullptr;
+                        if( nUserData )
+                        {
+                            pParam = const_cast<SbxParamInfo*>(pInfo->GetParam( i ));
+                        }
+                        if( pParam )
+                        {
+                            pParam->nUserData = nUserData;
+                        }
+                    }
+                    pMeth->SetInfo( pInfo );
+                }
+            }   // for( iPass...
+        }
+    }
+    if (aCode.GetErrCode())
+    {
+        pParser->Error(aCode.GetErrCode(), aCode.GetErrMessage());
+    }
+    // The code
+    p->AddCode(aCode.GetBuffer());
+
+    // The global StringPool. 0 is not occupied.
+    SbiStringPool* pPool = &pParser->aGblStrings;
+    sal_uInt16 nSize = pPool->GetSize();
+    p->MakeStrings( nSize );
+    sal_uInt32 i;
+    for( i = 1; i <= nSize; i++ )
+    {
+        p->AddString( pPool->Find( i ) );
+    }
+    // Insert types
+    sal_uInt32 nCount = pParser->rTypeArray->Count();
+    for (i = 0; i < nCount; i++)
+    {
+         p->AddType(static_cast<SbxObject *>(pParser->rTypeArray->Get(i)));
+    }
+    // Insert enum objects
+    nCount = pParser->rEnumArray->Count();
+    for (i = 0; i < nCount; i++)
+    {
+         p->AddEnum(static_cast<SbxObject *>(pParser->rEnumArray->Get(i)));
+    }
+    if( !p->IsError() )
+    {
+        rMod.pImage = std::move(p);
+    }
+    rMod.EndDefinitions();
+}
+
+namespace {
+
+template < class T >
+class PCodeVisitor
+{
+public:
+    virtual ~PCodeVisitor();
+
+    virtual void start( const sal_uInt8* pStart ) = 0;
+    virtual void processOpCode0( SbiOpcode eOp ) = 0;
+    virtual void processOpCode1( SbiOpcode eOp, T nOp1 ) = 0;
+    virtual void processOpCode2( SbiOpcode eOp, T nOp1, T nOp2 ) = 0;
+    virtual bool processParams() = 0;
+};
+
+}
+
+template <class T> PCodeVisitor< T >::~PCodeVisitor()
+{}
+
+namespace {
+
+template <class T>
+class PCodeBufferWalker
+{
+private:
+    T  m_nBytes;
+    const sal_uInt8* m_pCode;
+    static T readParam( sal_uInt8 const *& pCode )
+    {
+        T nOp1=0;
+        for ( std::size_t i=0; i<sizeof( T ); ++i )
+            nOp1 |= *pCode++ << ( i * 8);
+        return nOp1;
+    }
+public:
+    PCodeBufferWalker( const sal_uInt8* pCode, T nBytes ): m_nBytes( nBytes ), m_pCode( pCode )
+    {
+    }
+    void visitBuffer( PCodeVisitor< T >& visitor )
+    {
+        const sal_uInt8* pCode = m_pCode;
+        if ( !pCode )
+            return;
+        const sal_uInt8* pEnd = pCode + m_nBytes;
+        visitor.start( m_pCode );
+        T nOp1 = 0, nOp2 = 0;
+        for( ; pCode < pEnd; )
+        {
+            SbiOpcode eOp = static_cast<SbiOpcode>(*pCode++);
+
+            if ( eOp <= SbiOpcode::SbOP0_END )
+                visitor.processOpCode0( eOp );
+            else if( eOp >= SbiOpcode::SbOP1_START && eOp <= SbiOpcode::SbOP1_END )
+            {
+                if ( visitor.processParams() )
+                    nOp1 = readParam( pCode );
+                else
+                    pCode += sizeof( T );
+                visitor.processOpCode1( eOp, nOp1 );
+            }
+            else if( eOp >= SbiOpcode::SbOP2_START && eOp <= SbiOpcode::SbOP2_END )
+            {
+                if ( visitor.processParams() )
+                {
+                    nOp1 = readParam( pCode );
+                    nOp2 = readParam( pCode );
+                }
+                else
+                    pCode += ( sizeof( T ) * 2 );
+                visitor.processOpCode2( eOp, nOp1, nOp2 );
+            }
+        }
+    }
+};
+
+template < class T, class S >
+class OffSetAccumulator : public PCodeVisitor< T >
+{
+    T m_nNumOp0;
+    T m_nNumSingleParams;
+    T m_nNumDoubleParams;
+public:
+
+    OffSetAccumulator() : m_nNumOp0(0), m_nNumSingleParams(0), m_nNumDoubleParams(0){}
+    virtual void start( const sal_uInt8* /*pStart*/ ) override {}
+    virtual void processOpCode0( SbiOpcode /*eOp*/ ) override { ++m_nNumOp0; }
+    virtual void processOpCode1( SbiOpcode /*eOp*/, T /*nOp1*/ ) override {  ++m_nNumSingleParams; }
+    virtual void processOpCode2( SbiOpcode /*eOp*/, T /*nOp1*/, T /*nOp2*/ ) override { ++m_nNumDoubleParams; }
+    S offset()
+    {
+        typedef decltype(T(1) + S(1)) larger_t; // type capable to hold both value ranges of T and S
+        T result = 0 ;
+        static const S max = std::numeric_limits< S >::max();
+        result = m_nNumOp0 + ( ( sizeof(S) + 1 ) * m_nNumSingleParams ) + ( (( sizeof(S) * 2 )+ 1 )  * m_nNumDoubleParams );
+        return std::min<larger_t>(max, result);
+    }
+    virtual bool processParams() override { return false; }
+};
+
+
+template < class T, class S >
+class BufferTransformer : public PCodeVisitor< T >
+{
+    const sal_uInt8* m_pStart;
+    SbiBuffer m_ConvertedBuf;
+public:
+    BufferTransformer():m_pStart(nullptr) {}
+    virtual void start( const sal_uInt8* pStart ) override { m_pStart = pStart; }
+    virtual void processOpCode0( SbiOpcode eOp ) override
+    {
+        m_ConvertedBuf += static_cast<sal_uInt8>(eOp);
+    }
+    virtual void processOpCode1( SbiOpcode eOp, T nOp1 ) override
+    {
+        m_ConvertedBuf += static_cast<sal_uInt8>(eOp);
+        switch( eOp )
+        {
+            case SbiOpcode::JUMP_:
+            case SbiOpcode::JUMPT_:
+            case SbiOpcode::JUMPF_:
+            case SbiOpcode::GOSUB_:
+            case SbiOpcode::CASEIS_:
+            case SbiOpcode::RETURN_:
+            case SbiOpcode::ERRHDL_:
+            case SbiOpcode::TESTFOR_:
+                nOp1 = static_cast<T>( convertBufferOffSet(m_pStart, nOp1) );
+                break;
+            case SbiOpcode::RESUME_:
+                if ( nOp1 > 1 )
+                    nOp1 = static_cast<T>( convertBufferOffSet(m_pStart, nOp1) );
+                break;
+            default:
+                break;
+
+        }
+        m_ConvertedBuf += static_cast<S>(nOp1);
+    }
+    virtual void processOpCode2( SbiOpcode eOp, T nOp1, T nOp2 ) override
+    {
+        m_ConvertedBuf += static_cast<sal_uInt8>(eOp);
+        if ( eOp == SbiOpcode::CASEIS_  && nOp1 )
+            nOp1 = static_cast<T>( convertBufferOffSet(m_pStart, nOp1) );
+        m_ConvertedBuf += static_cast<S>(nOp1);
+        m_ConvertedBuf += static_cast<S>(nOp2);
+
+    }
+    virtual bool processParams() override { return true; }
+    // yeuch, careful here, you can only call
+    // GetBuffer on the returned SbiBuffer once, also
+    // you (as the caller) get to own the memory
+    SbiBuffer& buffer()
+    {
+        return m_ConvertedBuf;
+    }
+    static S convertBufferOffSet( const sal_uInt8* pStart, T nOp1 )
+    {
+        PCodeBufferWalker< T > aBuff( pStart, nOp1);
+        OffSetAccumulator< T, S > aVisitor;
+        aBuff.visitBuffer( aVisitor );
+        return aVisitor.offset();
+    }
+};
+
+}
+
+sal_uInt32
+SbiCodeGen::calcNewOffSet( sal_uInt8 const * pCode, sal_uInt16 nOffset )
+{
+    return BufferTransformer< sal_uInt16, sal_uInt32 >::convertBufferOffSet( pCode, nOffset );
+}
+
+sal_uInt16
+SbiCodeGen::calcLegacyOffSet( sal_uInt8 const * pCode, sal_uInt32 nOffset )
+{
+    return BufferTransformer< sal_uInt32, sal_uInt16 >::convertBufferOffSet( pCode, nOffset );
+}
+
+template <class T, class S>
+void
+PCodeBuffConvertor<T,S>::convert()
+{
+    PCodeBufferWalker< T > aBuf( m_pStart, m_nSize );
+    BufferTransformer< T, S > aTrnsfrmer;
+    aBuf.visitBuffer( aTrnsfrmer );
+    // TODO: handle buffer errors
+    m_aCnvtdBuf = aTrnsfrmer.buffer().GetBuffer();
+}
+
+template class PCodeBuffConvertor< sal_uInt16, sal_uInt32 >;
+template class PCodeBuffConvertor< sal_uInt32, sal_uInt16 >;
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */