wangxin/loongoffice
1
0
Fork 0
forked from amazingfate/loongoffice
Code Pull Requests Activity
Files
39f563ca59cd70a208c5fbc81e40bbe51d689ee4
loongoffice/basic/source/classes/image.cxx
Stephan Bergmann 206b5b2661 New loplugin:external 
...warning about (for now only) functions and variables with external linkage
that likely don't need it.

The problems with moving entities into unnamed namespacs and breaking ADL
(as alluded to in comments in compilerplugins/clang/external.cxx) are
illustrated by the fact that while

  struct S1 { int f() { return 0; } };
  int f(S1 s) { return s.f(); }
  namespace N {
    struct S2: S1 { int f() { return 1; } };
    int f(S2 s) { return s.f(); }
  }
  int main() { return f(N::S2()); }

returns 1, both moving just the struct S2 into an nunnamed namespace,

  struct S1 { int f() { return 0; } };
  int f(S1 s) { return s.f(); }
  namespace N {
    namespace { struct S2: S1 { int f() { return 1; } }; }
    int f(S2 s) { return s.f(); }
  }
  int main() { return f(N::S2()); }

as well as moving just the function f overload into an unnamed namespace,

  struct S1 { int f() { return 0; } };
  int f(S1 s) { return s.f(); }
  namespace N {
    struct S2: S1 { int f() { return 1; } };
    namespace { int f(S2 s) { return s.f(); } }
  }
  int main() { return f(N::S2()); }

would each change the program to return 0 instead.

Change-Id: I4d09f7ac5e8f9bcd6e6bde4712608444b642265c
Reviewed-on: https://gerrit.libreoffice.org/60539
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>
2018-09-17 09:05:38 +02:00

665 lines
23 KiB
C++
Raw Blame History

/* -*- 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 <tools/stream.hxx>
#include <tools/tenccvt.hxx>
#include <osl/thread.h>
#include <sal/log.hxx>
#include <basic/sbx.hxx>
#include <sb.hxx>
#include <string.h>
#include <image.hxx>
#include <codegen.hxx>
#include <memory>
SbiImage::SbiImage()
{
pStrings = nullptr;
pCode = nullptr;
pLegacyPCode = nullptr;
nFlags = SbiImageFlags::NONE;
nStringSize= 0;
nCodeSize = 0;
nLegacyCodeSize =
nDimBase = 0;
bInit =
bError = false;
bFirstInit = true;
eCharSet = osl_getThreadTextEncoding();
nStringIdx = 0;
nStringOff = 0;
}
SbiImage::~SbiImage()
{
Clear();
}
void SbiImage::Clear()
{
mvStringOffsets.clear();
pStrings.reset();
pCode.reset();
pLegacyPCode.reset();
pStrings = nullptr;
pCode = nullptr;
nFlags = SbiImageFlags::NONE;
nStringSize= 0;
nLegacyCodeSize = 0;
nCodeSize = 0;
eCharSet = osl_getThreadTextEncoding();
nDimBase = 0;
bError = false;
}
static bool SbiGood( SvStream const & r )
{
return r.good();
}
// Open Record
static sal_uInt64 SbiOpenRecord( SvStream& r, FileOffset nSignature, sal_uInt16 nElem )
{
sal_uInt64 nPos = r.Tell();
r.WriteUInt16( static_cast<sal_uInt16>( nSignature ) )
.WriteInt32( 0 ).WriteUInt16( nElem );
return nPos;
}
// Close Record
static void SbiCloseRecord( SvStream& r, sal_uInt64 nOff )
{
sal_uInt64 nPos = r.Tell();
r.Seek( nOff + 2 );
r.WriteInt32(nPos - nOff - 8 );
r.Seek( nPos );
}
bool SbiImage::Load( SvStream& r, sal_uInt32& nVersion )
{
sal_uInt16 nSign, nCount;
sal_uInt32 nLen, nOff;
Clear();
// Read Master-Record
r.ReadUInt16( nSign ).ReadUInt32( nLen ).ReadUInt16( nCount );
sal_uInt64 nLast = r.Tell() + nLen;
sal_uInt32 nCharSet; // System charset
sal_uInt32 lDimBase;
sal_uInt16 nReserved1;
sal_uInt32 nReserved2;
sal_uInt32 nReserved3;
bool bBadVer = false;
if( nSign == static_cast<sal_uInt16>( FileOffset::Module ) )
{
sal_uInt16 nTmpFlags;
r.ReadUInt32( nVersion ).ReadUInt32( nCharSet ).ReadUInt32( lDimBase )
.ReadUInt16( nTmpFlags ).ReadUInt16( nReserved1 ).ReadUInt32( nReserved2 ).ReadUInt32( nReserved3 );
nFlags = static_cast<SbiImageFlags>(nTmpFlags);
eCharSet = nCharSet;
eCharSet = GetSOLoadTextEncoding( eCharSet );
bBadVer = ( nVersion > B_CURVERSION );
nDimBase = static_cast<sal_uInt16>(lDimBase);
}
bool bLegacy = ( nVersion < B_EXT_IMG_VERSION );
sal_uInt64 nNext;
while( ( nNext = r.Tell() ) < nLast )
{
r.ReadUInt16( nSign ).ReadUInt32( nLen ).ReadUInt16( nCount );
nNext += nLen + 8;
if( r.GetError() == ERRCODE_NONE )
{
switch( static_cast<FileOffset>( nSign ) )
{
case FileOffset::Name:
aName = r.ReadUniOrByteString(eCharSet);
break;
case FileOffset::Comment:
aComment = r.ReadUniOrByteString(eCharSet );
break;
case FileOffset::Source:
{
aOUSource = r.ReadUniOrByteString(eCharSet);
break;
}
case FileOffset::ExtSource:
{
//assuming an empty string with just the lead 32bit/16bit len indicator
const size_t nMinStringSize = (eCharSet == RTL_TEXTENCODING_UNICODE) ? 4 : 2;
const sal_uInt64 nMaxStrings = r.remainingSize() / nMinStringSize;
if (nCount > nMaxStrings)
{
SAL_WARN("basic", "Parsing error: " << nMaxStrings <<
" max possible entries, but " << nCount << " claimed, truncating");
nCount = nMaxStrings;
}
for( sal_uInt16 j = 0; j < nCount; ++j)
{
aOUSource += r.ReadUniOrByteString(eCharSet);
}
break;
}
case FileOffset::PCode:
if( bBadVer ) break;
pCode.reset(new char[ nLen ]);
nCodeSize = nLen;
r.ReadBytes(pCode.get(), nCodeSize);
if ( bLegacy )
{
nLegacyCodeSize = static_cast<sal_uInt16>(nCodeSize);
pLegacyPCode = std::move(pCode);
PCodeBuffConvertor< sal_uInt16, sal_uInt32 > aLegacyToNew( reinterpret_cast<sal_uInt8*>(pLegacyPCode.get()), nLegacyCodeSize );
aLegacyToNew.convert();
pCode.reset(reinterpret_cast<char*>(aLegacyToNew.GetBuffer()));
nCodeSize = aLegacyToNew.GetSize();
// we don't release the legacy buffer
// right now, that's because the module
// needs it to fix up the method
// nStart members. When that is done
// the module can release the buffer
// or it can wait until this routine
// is called again or when this class // destructs all of which will trigger
// release of the buffer.
}
break;
case FileOffset::Publics:
case FileOffset::PoolDir:
case FileOffset::SymPool:
case FileOffset::LineRanges:
break;
case FileOffset::StringPool:
{
if( bBadVer ) break;
//assuming an empty string with just the lead 32bit len indicator
const sal_uInt64 nMinStringSize = 4;
const sal_uInt64 nMaxStrings = r.remainingSize() / nMinStringSize;
if (nCount > nMaxStrings)
{
SAL_WARN("basic", "Parsing error: " << nMaxStrings <<
" max possible entries, but " << nCount << " claimed, truncating");
nCount = nMaxStrings;
}
MakeStrings( nCount );
for( size_t i = 0; i < mvStringOffsets.size() && SbiGood( r ); i++ )
{
r.ReadUInt32( nOff );
mvStringOffsets[ i ] = static_cast<sal_uInt16>(nOff);
}
r.ReadUInt32( nLen );
if( SbiGood( r ) )
{
pStrings.reset(new sal_Unicode[ nLen ]);
nStringSize = static_cast<sal_uInt16>(nLen);
std::unique_ptr<char[]> pByteStrings(new char[ nLen ]);
r.ReadBytes(pByteStrings.get(), nStringSize);
for( size_t j = 0; j < mvStringOffsets.size(); j++ )
{
sal_uInt16 nOff2 = static_cast<sal_uInt16>(mvStringOffsets[ j ]);
OUString aStr( pByteStrings.get() + nOff2, strlen(pByteStrings.get() + nOff2), eCharSet );
memcpy( pStrings.get() + nOff2, aStr.getStr(), (aStr.getLength() + 1) * sizeof( sal_Unicode ) );
}
}
break;
}
case FileOffset::UserTypes:
{
//assuming an empty string with just the lead 32bit/16bit len indicator
const size_t nMinStringSize = (eCharSet == RTL_TEXTENCODING_UNICODE) ? 4 : 2;
const sal_uInt64 nMinRecordSize = nMinStringSize + sizeof(sal_Int16);
const sal_uInt64 nMaxRecords = r.remainingSize() / nMinRecordSize;
if (nCount > nMaxRecords)
{
SAL_WARN("basic", "Parsing error: " << nMaxRecords <<
" max possible entries, but " << nCount << " claimed, truncating");
nCount = nMaxRecords;
}
// User defined types
for (sal_uInt16 i = 0; i < nCount; i++)
{
OUString aTypeName = r.ReadUniOrByteString(eCharSet);
sal_uInt16 nTypeMembers;
r.ReadUInt16(nTypeMembers);
const sal_uInt64 nMaxTypeMembers = r.remainingSize() / 8;
if (nTypeMembers > nMaxTypeMembers)
{
SAL_WARN("basic", "Parsing error: " << nMaxTypeMembers <<
" max possible entries, but " << nTypeMembers << " claimed, truncating");
nTypeMembers = nMaxTypeMembers;
}
SbxObject *pType = new SbxObject(aTypeName);
SbxArray *pTypeMembers = pType->GetProperties();
for (sal_uInt16 j = 0; j < nTypeMembers; j++)
{
OUString aMemberName = r.ReadUniOrByteString(eCharSet);
sal_Int16 aIntMemberType;
r.ReadInt16(aIntMemberType);
SbxDataType aMemberType = static_cast< SbxDataType > ( aIntMemberType );
SbxProperty *pTypeElem = new SbxProperty( aMemberName, aMemberType );
sal_uInt32 aIntFlag;
r.ReadUInt32(aIntFlag);
SbxFlagBits nElemFlags = static_cast< SbxFlagBits > ( aIntFlag );
pTypeElem->SetFlags(nElemFlags);
sal_Int16 hasObject;
r.ReadInt16(hasObject);
if (hasObject == 1)
{
if(aMemberType == SbxOBJECT)
{
// nested user defined types
// declared before use, so it is ok to reference it by name on load
OUString aNestedTypeName = r.ReadUniOrByteString(eCharSet);
SbxObject* pNestedTypeObj = static_cast< SbxObject* >( rTypes->Find( aNestedTypeName, SbxClassType::Object ) );
if (pNestedTypeObj)
{
SbxObject* pCloneObj = cloneTypeObjectImpl( *pNestedTypeObj );
pTypeElem->PutObject( pCloneObj );
}
}
else
{
// an array
SbxDimArray* pArray = new SbxDimArray();
sal_Int16 isFixedSize;
r.ReadInt16(isFixedSize);
if (isFixedSize == 1)
pArray->setHasFixedSize( true );
sal_Int32 nDims;
r.ReadInt32(nDims);
for (sal_Int32 d = 0; d < nDims; d++)
{
sal_Int32 lBound;
sal_Int32 uBound;
r.ReadInt32(lBound).ReadInt32(uBound);
pArray->unoAddDim32(lBound, uBound);
}
pTypeElem->PutObject( pArray );
}
}
pTypeMembers->Insert( pTypeElem, pTypeMembers->Count() );
}
pType->Remove( "Name", SbxClassType::DontCare );
pType->Remove( "Parent", SbxClassType::DontCare );
AddType(pType);
}
break;
}
case FileOffset::ModEnd:
goto done;
default:
break;
}
}
else
{
break;
}
r.Seek( nNext );
}
done:
r.Seek( nLast );
if( !SbiGood( r ) )
{
bError = true;
}
return !bError;
}
bool SbiImage::Save( SvStream& r, sal_uInt32 nVer )
{
bool bLegacy = ( nVer < B_EXT_IMG_VERSION );
// detect if old code exceeds legacy limits
// if so, then disallow save
if ( bLegacy && ExceedsLegacyLimits() )
{
SbiImage aEmptyImg;
aEmptyImg.aName = aName;
aEmptyImg.Save( r, B_LEGACYVERSION );
return true;
}
// First of all the header
sal_uInt64 nStart = SbiOpenRecord( r, FileOffset::Module, 1 );
sal_uInt64 nPos;
eCharSet = GetSOStoreTextEncoding( eCharSet );
if ( bLegacy )
{
r.WriteInt32( B_LEGACYVERSION );
}
else
{
r.WriteInt32( B_CURVERSION );
}
r .WriteInt32( eCharSet )
.WriteInt32( nDimBase )
.WriteInt16( static_cast<sal_uInt16>(nFlags) )
.WriteInt16( 0 )
.WriteInt32( 0 )
.WriteInt32( 0 );
// Name?
if( !aName.isEmpty() && SbiGood( r ) )
{
nPos = SbiOpenRecord( r, FileOffset::Name, 1 );
r.WriteUniOrByteString( aName, eCharSet );
SbiCloseRecord( r, nPos );
}
// Comment?
if( !aComment.isEmpty() && SbiGood( r ) )
{
nPos = SbiOpenRecord( r, FileOffset::Comment, 1 );
r.WriteUniOrByteString( aComment, eCharSet );
SbiCloseRecord( r, nPos );
}
// Source?
if( !aOUSource.isEmpty() && SbiGood( r ) )
{
nPos = SbiOpenRecord( r, FileOffset::Source, 1 );
r.WriteUniOrByteString( aOUSource, eCharSet );
SbiCloseRecord( r, nPos );
}
// Binary data?
if( pCode && SbiGood( r ) )
{
nPos = SbiOpenRecord( r, FileOffset::PCode, 1 );
if ( bLegacy )
{
PCodeBuffConvertor< sal_uInt32, sal_uInt16 > aNewToLegacy( reinterpret_cast<sal_uInt8*>(pCode.get()), nCodeSize );
aNewToLegacy.convert();
pLegacyPCode.reset(reinterpret_cast<char*>(aNewToLegacy.GetBuffer()));
nLegacyCodeSize = aNewToLegacy.GetSize();
r.WriteBytes(pLegacyPCode.get(), nLegacyCodeSize);
}
else
{
r.WriteBytes(pCode.get(), nCodeSize);
}
SbiCloseRecord( r, nPos );
}
// String-Pool?
if( !mvStringOffsets.empty() )
{
nPos = SbiOpenRecord( r, FileOffset::StringPool, mvStringOffsets.size() );
// For every String:
// sal_uInt32 Offset of the Strings in the Stringblock
for( size_t i = 0; i < mvStringOffsets.size() && SbiGood( r ); i++ )
{
r.WriteUInt32( mvStringOffsets[ i ] );
}
// Then the String-Block
std::unique_ptr<char[]> pByteStrings(new char[ nStringSize ]);
for( size_t i = 0; i < mvStringOffsets.size(); i++ )
{
sal_uInt16 nOff = static_cast<sal_uInt16>(mvStringOffsets[ i ]);
OString aStr(OUStringToOString(OUString(pStrings.get() + nOff), eCharSet));
memcpy( pByteStrings.get() + nOff, aStr.getStr(), (aStr.getLength() + 1) * sizeof( char ) );
}
r.WriteUInt32( nStringSize );
r.WriteBytes(pByteStrings.get(), nStringSize);
pByteStrings.reset();
SbiCloseRecord( r, nPos );
}
// User defined types
if ( rTypes.is() )
{
sal_uInt16 nTypes = rTypes->Count();
if (nTypes > 0 )
{
nPos = SbiOpenRecord( r, FileOffset::UserTypes, nTypes );
for (sal_uInt16 i = 0; i < nTypes; i++)
{
SbxObject* pType = static_cast< SbxObject* > ( rTypes->Get(i) );
OUString aTypeName = pType->GetClassName();
r.WriteUniOrByteString( aTypeName, eCharSet );
SbxArray *pTypeMembers = pType->GetProperties();
sal_uInt16 nTypeMembers = pTypeMembers->Count();
r.WriteInt16(nTypeMembers);
for (sal_uInt16 j = 0; j < nTypeMembers; j++)
{
SbxProperty* pTypeElem = static_cast< SbxProperty* > ( pTypeMembers->Get(j) );
OUString aElemName = pTypeElem->GetName();
r.WriteUniOrByteString( aElemName, eCharSet );
SbxDataType dataType = pTypeElem->GetType();
r.WriteInt16(dataType);
SbxFlagBits nElemFlags = pTypeElem->GetFlags();
r.WriteUInt32(static_cast< sal_uInt32 > (nElemFlags) );
SbxBase* pElemObject = pTypeElem->GetObject();
if (pElemObject)
{
r.WriteInt16(1); // has elem Object
if( dataType == SbxOBJECT )
{
// nested user defined types
// declared before use, so it is ok to reference it by name on load
SbxObject* pNestedType = static_cast< SbxObject* > ( pElemObject );
r.WriteUniOrByteString( pNestedType->GetClassName(), eCharSet );
}
else
{
// an array
SbxDimArray* pArray = static_cast< SbxDimArray* > ( pElemObject );
bool bFixedSize = pArray->hasFixedSize();
if (bFixedSize)
r.WriteInt16(1);
else
r.WriteInt16(0);
sal_Int32 nDims = pArray->GetDims();
r.WriteInt32(nDims);
for (sal_Int32 d = 0; d < nDims; d++)
{
sal_Int32 lBound;
sal_Int32 uBound;
pArray->GetDim32(d, lBound, uBound);
r.WriteInt32(lBound).WriteInt32(uBound);
}
}
}
else
r.WriteInt16(0); // no elem Object
}
}
SbiCloseRecord( r, nPos );
}
}
// Set overall length
SbiCloseRecord( r, nStart );
if( !SbiGood( r ) )
{
bError = true;
}
return !bError;
}
void SbiImage::MakeStrings( short nSize )
{
nStringIdx = 0;
nStringOff = 0;
nStringSize = 1024;
pStrings.reset( new sal_Unicode[ nStringSize ]);
mvStringOffsets.resize(nSize);
memset( mvStringOffsets.data(), 0, nSize * sizeof( sal_uInt32 ) );
memset( pStrings.get(), 0, nStringSize * sizeof( sal_Unicode ) );
}
// Add a string to StringPool. The String buffer is dynamically
// growing in 1K-Steps
void SbiImage::AddString( const OUString& r )
{
if( nStringIdx >= short(mvStringOffsets.size()) )
{
bError = true;
}
if( !bError )
{
sal_Int32 len = r.getLength() + 1;
sal_uInt32 needed = nStringOff + len;
if( needed > 0xFFFFFF00 )
{
bError = true; // out of mem!
}
else if( needed > nStringSize )
{
sal_uInt32 nNewLen = needed + 1024;
nNewLen &= 0xFFFFFC00; // trim to 1K border
std::unique_ptr<sal_Unicode[]> p(new sal_Unicode[nNewLen]);
memcpy( p.get(), pStrings.get(), nStringSize * sizeof( sal_Unicode ) );
pStrings = std::move(p);
nStringSize = sal::static_int_cast< sal_uInt16 >(nNewLen);
}
if( !bError )
{
mvStringOffsets[ nStringIdx++ ] = nStringOff;
memcpy( pStrings.get() + nStringOff, r.getStr(), len * sizeof( sal_Unicode ) );
nStringOff = nStringOff + len;
// Last String? The update the size of the buffer
if( nStringIdx >= short(mvStringOffsets.size()) )
{
nStringSize = nStringOff;
}
}
}
}
// Add code block
// The block was fetched by the compiler from class SbBuffer and
// is already created with new. Additionally it contains all Integers
// in Big Endian format, so can be directly read/written.
void SbiImage::AddCode( std::unique_ptr<char[]> p, sal_uInt32 s )
{
pCode = std::move(p);
nCodeSize = s;
}
// Add user type
void SbiImage::AddType(SbxObject const * pObject)
{
if( !rTypes.is() )
{
rTypes = new SbxArray;
}
SbxObject *pCopyObject = new SbxObject(*pObject);
rTypes->Insert (pCopyObject,rTypes->Count());
}
void SbiImage::AddEnum(SbxObject* pObject) // Register enum type
{
if( !rEnums.is() )
{
rEnums = new SbxArray;
}
rEnums->Insert( pObject, rEnums->Count() );
}
// Note: IDs start with 1
OUString SbiImage::GetString( short nId ) const
{
if( nId && nId <= short(mvStringOffsets.size()) )
{
sal_uInt32 nOff = mvStringOffsets[ nId - 1 ];
sal_Unicode* pStr = pStrings.get() + nOff;
// #i42467: Special treatment for vbNullChar
if( *pStr == 0 )
{
sal_uInt32 nNextOff = (nId < short(mvStringOffsets.size())) ? mvStringOffsets[ nId ] : nStringOff;
sal_uInt32 nLen = nNextOff - nOff - 1;
if( nLen == 1 )
{
// Force length 1 and make char 0 afterwards
OUString aNullCharStr( u'\0');
return aNullCharStr;
}
}
else
{
return OUString(pStr);
}
}
return OUString();
}
const SbxObject* SbiImage::FindType (const OUString& aTypeName) const
{
return rTypes.is() ? static_cast<SbxObject*>(rTypes->Find(aTypeName,SbxClassType::Object)) : nullptr;
}
sal_uInt16 SbiImage::CalcLegacyOffset( sal_Int32 nOffset )
{
return SbiCodeGen::calcLegacyOffSet( reinterpret_cast<sal_uInt8*>(pCode.get()), nOffset ) ;
}
sal_uInt32 SbiImage::CalcNewOffset( sal_Int16 nOffset )
{
return SbiCodeGen::calcNewOffSet( reinterpret_cast<sal_uInt8*>(pLegacyPCode.get()), nOffset ) ;
}
void SbiImage::ReleaseLegacyBuffer()
{
pLegacyPCode.reset();
nLegacyCodeSize = 0;
}
bool SbiImage::ExceedsLegacyLimits()
{
return ( nStringSize > 0xFF00 ) || ( CalcLegacyOffset( nCodeSize ) > 0xFF00 );
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
View Git Blame Copy Permalink