C++ Except函数代码示例

int
P4ClientApi::FormatSpec( const char * type, int table )
{
	if ( !specMgr.HaveSpecDef( type ) )
	{
		StrBuf m;
		m = "No spec definition for ";
		m.Append( type );
		m.Append( " objects." );
		return Except( "P4#format_spec", m.Text() );
	}

	// Got a specdef so now we can attempt to convert.
	StrBuf	buf;
	Error	e;

	specMgr.SpecToString( type, table, buf, &e );
	if( !e.Test() ) {
		lua_pushstring( L, buf.Text() );
		return 1;
	}

	StrBuf m;
	m = "Error converting hash to a string.";
	if( e.Test() ) e.Fmt( m, EF_PLAIN );
	return Except( "P4#format_spec", m.Text() );
}

int P4ClientAPI::SetCharset( const char *c )
{
	if( P4LUADEBUG_COMMANDS )
		fprintf( stderr, "[P4] Setting charset: %s\n", c );

    CharSetApi::CharSet cs = CharSetApi::NOCONV;

	if ( strlen(c) > 0 ) {
		cs = CharSetApi::Lookup( c );
		if( cs < 0 )
		{
			if( exceptionLevel )
			{
				StrBuf	m;
				m = "Unknown or unsupported charset: ";
				m.Append( c );
				return Except( "P4.charset", m.Text() );
			}
			return 0;
		}
	}

    if( CharSetApi::Granularity( cs ) != 1 ) {
		return Except( "P4.charset", "P4Lua does not support a wide charset!");
    }

	client.SetCharset(c);
	
    client.SetTrans( cs, cs, cs, cs );
	return 1;
}

	//--------------------------------------------------------------------------------------------------------------
	//创建二维纹理
	Texture* D3D9TextureManager::CreateTexture( UINT nWidth, UINT nHeight, PixelFormat ePixelFormat,
		TextureUsage Type, int nNumLevels )
	{
		//如果为压缩纹理格式
		if( ePixelFormat & PF_COMPRESS_MASK )
		{
			//检测指定纹理压缩格式是否可用
			if( !CheckCompressFormat( ePixelFormat ) )
				Except( Exception::ERR_INTERNAL_ERROR, "硬件不支持指定的纹理压缩格式，无法创建纹理。" );

			if( !IsPow2( nWidth ) || !IsPow2( nHeight ) )
				Except( Exception::ERR_INTERNAL_ERROR, "无法创建非 2 次幂尺寸的压缩纹理。" );
		}

		//获取最佳的纹理尺寸
		UINT texWidth = 0;
		UINT texHeight = 0;
		GetBestSize( nWidth, nHeight, texWidth, texHeight );

		nNumLevels = (UINT)( ( nNumLevels == -1 ) ? mDefTexLevels : nNumLevels );

		Texture* pTex = new D3D9Texture( texWidth, texHeight, ePixelFormat, nNumLevels, Type );

		*mTextureList.Push() = pTex;
		++mNumTextures;

		return pTex;
	}

	//--------------------------------------------------------------------------------------------------------------
	TextSurface::TextSurface( ZOrderType eZType, OverlaySurface* pZRefOverlay, FontFace* pFont, LPCWSTR szText,
		int nX, int nY, int nLineWidth, int nMaxChars, DWORD dwColor, TextureFilterType eFilterType )
		:OverlaySurface	( eZType, pZRefOverlay, eFilterType )
		 ,mpFont			(pFont)
		, mpText			(NULL)
		, mNumChars			(0)
		, mX				(nX)
		, mY				(nY)
		, mLineWidth		(nLineWidth)
		, mTextColor		(dwColor)
	{
		if( nX + mpFont->mnMaxWidth > nLineWidth )
			Except( Exception::ERR_INVALIDPARAMS, "指定平面文字行宽度过小。" );

		//计算字符串长度
		int nNumChars = 0;
		wchar_t* pChar = (wchar_t*)szText;
		while( *pChar != 0 )
		{
			++pChar;
			++nNumChars;
		}

		//如果未指定最大字符数量则使用当前字符串字符数量
		if( nMaxChars == 0 )
			mMaxChars = nNumChars;
		else if( nMaxChars < nNumChars )
			Except( Exception::ERR_INVALIDPARAMS, "指定的最大字符数量小于当前文字字符数量。" );
		else
			mMaxChars = nMaxChars;

		mNumChars = nNumChars;

		//分配内存
		size_t nStrLen = sizeof(wchar_t) * ( mMaxChars + 1 );
		size_t nDrawLen = sizeof(FontFace::GlyphDraw) * mMaxChars;

		BYTE* pMem = (BYTE*)malloc( nStrLen + nDrawLen + sizeof(OverlayVertex)*6*mMaxChars );

		//复制字符串
		mpText = (wchar_t*)pMem;
		memcpy( mpText, szText, sizeof(wchar_t) * ( mNumChars + 1 ) );

		//分配字形数据缓存
		mpGlyphDraw = (FontFace::GlyphDraw*)( pMem + nStrLen );
		memset( mpGlyphDraw, 0, nDrawLen );

		//分配顶点数据缓存
		mpVertexData = (OverlayVertex*)( pMem + nStrLen + nDrawLen );
		mpVertexPtr = mpVertexData;
		mNumVertex = 0;

		//更新文字数据
		_UpdateText();
	}

float CNProbeSet::getIntensityContrast(double dK)
{
  if ((m_fAMedianIntensity + m_fBMedianIntensity) == 0) {
    throw(Except("Zero median intensities found. CEL file may be corrupted."));
  }
  float fContrast = (float)(sinh(dK * (m_fAMedianIntensity - m_fBMedianIntensity) / (m_fAMedianIntensity + m_fBMedianIntensity)) / sinh(dK));
  if (fabs(fContrast) > 1) {
    throw(Except("Can't have abs(contrast) > 1."));
  }
  return fContrast;
}

	//--------------------------------------------------------------------------------------------------------------
	//创建纹理状态
	TextureState* Material::CreateTextureState( UINT nStage )
	{
		if( mppTextureState[nStage] != NULL )
			Except( Exception::ERR_INVALIDPARAMS, "指定的纹理状态已经存在，无法重复创建。" );

		if( nStage >= RenderSystem::mpSingleton->mMaxTextureNum )
			Except( Exception::ERR_INTERNAL_ERROR, "无法超过支持的纹理状态最大限，创建纹理状态失败。" );

		mppTextureState[nStage] = new TextureState;

		return mppTextureState[nStage];
	}

	//--------------------------------------------------------------------------------------------------------------
	//读取文件数据
	void BaseFile::Read( void* pBuf, DWORD dwLen )
	{
		//如果最后进行的缓存操作不是读取操作
		if( mLastBuffedOp != BOT_Read )
			_SyncOperation();

		BYTE* pDstBuf = (BYTE*)pBuf;

		while( dwLen != 0 )
		{
			//如果缓存中已存在数据
			if( mdwCachedLen != 0 )
			{
				//读取缓存中的剩余数据
				DWORD dwCopyLen = ( dwLen < mdwCachedLen ) ? dwLen : mdwCachedLen;
				memcpy( pBuf, mpCachePtr, dwCopyLen );
				mdwCachedLen -= dwCopyLen;
				mpCachePtr += dwCopyLen;
				dwLen -= dwCopyLen;
				pDstBuf += dwCopyLen;
			}
			//如果缓存中已不存在数据且读取长度大于等于缓存长度
			else if( dwLen >= mCacheLen )
			{
				//直接从文件中读取数据
				if( dwLen != _InternalRead( pDstBuf, dwLen ) )
					Except( Exception::ERR_CANNOT_READ_FILE, STR_ERR_READ_LEN );

				break;
			}
			//如果缓存中已不存在数据且读取长度小于缓存长度
			else
			{
				//从文件中读取数据填充缓存
				DWORD dwReadLen = _InternalRead( mpCache, mCacheLen );
				if( dwReadLen < dwLen )
					Except( Exception::ERR_CANNOT_READ_FILE, STR_ERR_READ_LEN );

				//从缓存中读取指定长度的数据
				memcpy( pDstBuf, mpCache, dwLen );

				mpCachePtr = mpCache + dwLen;
				mdwCachedLen = dwReadLen - dwLen;

				break;
			}
		}

		//记录最后的缓存操作类型
		mLastBuffedOp = BOT_Read;
		mPosition += dwLen;
	}

/**
 * @brief Run the copy number ratio engine. The copy number ratio engine will inturn call the copy number engine.
 * @param CopyNumberOptions* - The options to run with.
 * @return int - 0 if successful else 1
 */
void CNReferenceEngine::runImp()
{
    try
    {
        m_data.setEngine(m_pEngine);
        uint64_t memAvail = ::getDouble(m_pEngine->getOpt("free-mem-at-start"));
        if (memAvail >= (2000 * MEGABYTE))
        {
            m_pEngine->setOpt("mem-usage", "2000");
        }
        else
        {
            int iMemUsage = (memAvail / MEGABYTE);
            m_pEngine->setOpt("mem-usage", ::getInt(iMemUsage));
        }

        m_data.loadAnnotation(true);
        m_iProbeSetCount = m_data.getProbeSets()->getCount();
        m_iExperimentCount = m_data.loadExperiments(m_pEngine->getOpt("expr-summary-file"));
        if (m_iExperimentCount == 0) {throw(Except("No experiments to process."));}
        if (m_iProbeSetCount == 0) {throw(Except("No probesets to process."));}
        if (!determineMemoryUsage()) {return;}
        if (!processData()) {return;}

        m_pEngine->setOpt("sample-count", ::getInt(m_iExperimentCount));
        if (!m_data.writeModelFile(m_pEngine->getOpt("reference-file"))) {return;}

        if (m_pEngine->isOptDefined("wave-correction-reference-method"))
        {
            if ((m_pEngine->getOpt("wave-correction-reference-method") != "none") && (m_pEngine->getOpt("wave-correction-reference-method") != ""))
            {
                CNAnalysisMethodFactory amFactory;
                CNAnalysisMethod* am = NULL;
                am = amFactory.CNAnalysisMethodForString(m_pEngine->getOpt("wave-correction-reference-method"));
                am->setEngine(m_pEngine);
                am->run();
                delete am;
            }
        }
        if ((m_pEngine->isOptDefined("temp-reference-file")) && (m_pEngine->getOpt("temp-reference-file") != ""))
        {
            Fs::rm(m_pEngine->getOpt("temp-reference-file"));
        }
        clear();

    }
    catch(...) {m_data.clear(); throw;}
}

int P4ClientAPI::Except( const char *func, Error *e )
{
	StrBuf	m;

	e->Fmt( &m );
	return Except( func, m.Text() );
}

int P4ClientAPI::ConnectOrReconnect()
{
    if( IsTrackMode() )
	client.SetProtocol( "track", "" );

    Error e;

    ResetFlags();
    client.Init( &e );
    if ( e.Test() && exceptionLevel ) {
		return Except( "P4:connect()", &e );
    }

    if ( e.Test() )
		return 0;

    // If an iterator is defined, reset the break functionality
    // for the KeepAlive function

    if( ui.GetHandler() != LUA_NOREF )
    {
		client.SetBreak( &ui );
    }

    SetConnected();

	lua_pushboolean( L, true );
	return 1;
}

	//--------------------------------------------------------------------------------------------------------------
	//建立新二叉树分割面
	void BSPGenerator::_BuildNewPlane3( WORD pVerIndex[4], int nNumVer, BSPPlaneList* pNewPlane3List )
	{
		//根据顶点数量判断建立的三角面数量
		switch (nNumVer)
		{
		case 3:
			{
				*pNewPlane3List->Push() = mpPlane3Buf + mNumFace;
				mpPlane3Buf[ mNumFace++ ].SetFromPoints( mpVertexBuf, pVerIndex[0], pVerIndex[1], pVerIndex[2] );

				break;
			}
		case 4:
			{
				*pNewPlane3List->Push() = mpPlane3Buf + mNumFace;
				mpPlane3Buf[ mNumFace++ ].SetFromPoints( mpVertexBuf, pVerIndex[0], pVerIndex[1], pVerIndex[2] );

				*pNewPlane3List->Push() = mpPlane3Buf + mNumFace;
				mpPlane3Buf[ mNumFace++ ].SetFromPoints( mpVertexBuf, pVerIndex[0], pVerIndex[2], pVerIndex[3] );

				break;
			}
		default:
			Except( Exception::ERR_INTERNAL_ERROR, "三角形分割后生成的新顶点数量错误。" );
		}
	}

/**
 * Guesstimate the maximum number of probe sets we can load for all experiments.
 * Guesstimate the maximum number of experiments we can load for all probe sets.
 * @return bool - true if successful
 */
bool CNReferenceEngine::determineMemoryUsage()
{
    int iMemUsage = m_pEngine->getOptInt("mem-usage");
    int iMBUsedForProbeSetList = (int)((77 * m_iProbeSetCount) / 1000000.0);
    int iMBUsedForExperimentList = (int)((58 * m_iExperimentCount) / 1000000.0);

    m_iProbeSetsToProcess = (int)((((iMemUsage - iMBUsedForProbeSetList - iMBUsedForExperimentList) * 1000000.0) / 9.0) / m_iExperimentCount);
    if (m_iProbeSetsToProcess <= 0) {throw(Except("Not enough memory to run application. ProbeSetsToProcess = " + ::getInt(m_iProbeSetsToProcess)));}
    if (m_iProbeSetsToProcess > m_iProbeSetCount) {m_iProbeSetsToProcess = m_iProbeSetCount;}

    m_iExperimentsToProcess = (int)((((iMemUsage - iMBUsedForProbeSetList - iMBUsedForExperimentList) * 1000000.0) / 9.0) / m_iProbeSetCount);
    if (m_iExperimentsToProcess <= 0) {throw(Except("Not enough memory to run application. ExperimentsToProcess = " + ::getInt(m_iExperimentsToProcess)));}
    if (m_iExperimentsToProcess > m_iExperimentCount) {m_iExperimentsToProcess = m_iExperimentCount;}

    return true;
}

//-----------------------------------------------------------------------
SubEntity* Entity::getSubEntity(unsigned int index) {
  if (index >= mSubEntityList.size())
    Except(Exception::ERR_INVALIDPARAMS,
           "Index out of bounds.",
           "Entity::getSubEntity");
  return mSubEntityList[index];
}

Dbms* dbms()
	{
	if (isclient())
		{
		if (! tls().thedbms)
			{
			if (Fibers::inMain())
				tls().thedbms = dbms_remote(server_ip);
			else
				{
				try
					{
					tls().thedbms = dbms_remote_async(server_ip);
					}
				catch (const Except& e)
					{
					throw Except(e, 
						"thread failed to connect to db server: " + e.gcstr());
					}
				tls().thedbms->auth(Fibers::main_dbms()->token());
				}
			}
		return tls().thedbms;
		}
	else
		{
		static Dbms* local = dbms_local();
		return local;
		}
	}

			// Will do is IsTypeOf T before getting and throw if types dont match
			T GetCheckVal() const
			{
				if(IsTypeOf<T>())
					return GetVal();
				else
					throw Except(String("GetCheckVal expected ")+typeid(T).name());
			}