C++ iterator::toInt方法代码示例

modelPoint *parsePoint()
{

	modelPoint *ret = new modelPoint();
	QString strLine = getLine();
	checkEqual(strLine, TOKOBRACE);

	strLine = getLine();
	QString connectedlines = getValue(strLine, TOKCONECTEDLINES);

	strLine = getLine();
	QString connectedextrems = getValue(strLine, TOKCONECTEDEXTREMS);

	strLine = getLine();
	//QString position=getValue(strLine,TOKPOSITION);

	strLine = getLine();
	checkEqual(strLine, TOKCBRACE);

	ret->extrems =
	    connectedextrems.split(TOKCOLON, QString::SkipEmptyParts);
	QStringList t = connectedlines.split(TOKCOLON, QString::SkipEmptyParts);
	QStringList::iterator i;
	QList < int >ls;
	for (i = t.begin(); i != t.end(); ++i)
		ls.append(i->toInt());
	ret->lines = ls;
	return ret;
}

modelLine *parseLine()
{

	modelLine *ret = new modelLine();

	QString strLine = getLine();
	checkEqual(strLine, TOKOBRACE);

	strLine = getLine();
	QString source = getValue(strLine, TOKSOURCE);

	strLine = getLine();
	QString sink = getValue(strLine, TOKSINK);

	strLine = getLine();
	//QString pointx=getValue(strLine,TOKPOINTX);

	strLine = getLine();
	//QString pointy=getValue(strLine,TOKPOINTY);

	strLine = getLine();
	checkEqual(strLine, TOKCBRACE);

	QStringList src = source.split(TOKCOLON, QString::SkipEmptyParts);
	ret->sourceType = src.takeFirst().trimmed();
	QStringList::iterator i;
	QList < int >sources;
	for (i = src.begin(); i != src.end(); ++i)
		sources.append(i->toInt());
	ret->sources = sources;

	src = sink.split(TOKCOLON, QString::SkipEmptyParts);
	ret->sinkType = src.takeFirst().trimmed();
	QList < int >sinks;
	for (i = src.begin(); i != src.end(); ++i)
		sinks.append(i->toInt());
	ret->sinks = sinks;
	return ret;

}

bool synaxErrorJudger::isAlldataTypeValid(QStringList &data,  vector<pair<int, size_t>> &dataTypeInfo)
{
	QStringList::iterator it;
	for (it = data.begin(); it != data.end(); ++it) {
		*it = it->trimmed();
		if (*it == "") {
			return false;
		}
		bool ok;
		if (it->indexOf('\'') != -1) { //引号'应该是字符或字符串
			it->remove(0, 1).remove(QRegExp("'$"));
			size_t len = it->size();
			if (len < 1 || len > 255) {
				return false;
			}
			else if (len == 1) {
				dataTypeInfo.push_back(pair<int, size_t>(_CHAR, sizeof(char)));
			}
			else {
				dataTypeInfo.push_back(pair<int, size_t>(_STRING, len * sizeof(char)));
			}
		}
		else if (it->indexOf('.') != -1) { //有小数点且不是字符串，应该是float
			it->toFloat(&ok);
			if (!ok) {
				return false;
			}
			else {
				dataTypeInfo.push_back(pair<int, size_t>(_FLOAT, sizeof(float)));
			}
		}
		else { //剩下的应该是int类型
			it->toInt(&ok);
			if (!ok) {
				return false;
			}
			else {
				dataTypeInfo.push_back(pair<int, size_t>(_INT, sizeof(int)));
			}
		}
	}
	return true;
}

void synaxErrorJudger::generateCondition()
{
	int begin = sqlExp.indexOf("where") + 5;
	int end = sqlExp.indexOf(QRegExp(";$")) - 1;
	QStringList conditions = sqlExp.mid(begin, end - begin + 1).split("and");
	QStringList::iterator it;
	pair<int, size_t> dataType;
	int logicType;
	string rightSide, leftSide;
	for (it = conditions.begin(); it != conditions.end(); ++it) {	
		*it = it->trimmed();
		if (*it == "") {
			throw QString("Synax Error: Conditions' format is incorrect.");
		}
		int begin = 0;
		int end = it->indexOf(QRegExp("[=><]"))-1;
		rightSide = it->mid(begin, end - begin + 1).trimmed().toStdString();
		begin = end + 1;
		end = it->indexOf(QRegExp("[=><]"), begin + 1);
		if (end - begin > 1 || end == -1) { //如果下一个"=",">","<"号出现在较远处
			end = begin; //说明这个逻辑关系是"=",">","<"而非">=", "<=", "<>" 
		}
		logicType = condition::getLogicTypeFromStr(it->mid(begin, end - begin + 1).toStdString());
		if (logicType == _ERROR) {
			throw QString("Synax Error: The logic arithemtic is invalid.");
		}
		bool ok;
		*it = it->mid(end + 1).trimmed();
		if (it->indexOf(QRegExp("^'")) != -1) { //引号'应该是字符或字符串
			it->remove(0, 1).remove(QRegExp("'$"));
			size_t len = it->size();
			pair<int, size_t> dType;
			Api::cManager.getAttributeDataType(*tblName, rightSide, dType);
			if (len < 1 || len > 255 || len > dType.second) {
				throw QString("Synax Error: The length of string is overflow.");
			}
			else if (len == 1) {
				dataType = pair<int, size_t>(_CHAR, sizeof(char));
			}
			else {
				dataType = pair<int, size_t>(_STRING, dType.second * sizeof(char));
			}
		}
		else if (it->indexOf('.') != -1) { //有小数点且不是字符串，应该是float
			it->toFloat(&ok);
			if (!ok) {
				;
			}
			else {
				dataType = pair<int, size_t>(_FLOAT, sizeof(float));
			}
		}
		else { //剩下的应该是int类型
			it->toInt(&ok);
			if (!ok) {
				;
			}
			else {
				dataType = pair<int, size_t>(_INT, sizeof(int));
			}
		}
		leftSide = it->toStdString();
		if (cond == 0) {
			cond = new vector<condition>;
		}
		cond->push_back(condition(rightSide, logicType, dataType, leftSide));
	}
}

void
CLArgsPrivate::parse()
{
    {
        QStringList::iterator it = hasToken( QString::fromUtf8("version"), QString::fromUtf8("v") );
        if ( it != args.end() ) {
            QString msg = QObject::tr("%1 version %2 at commit %3 on branch %4 built on %4").arg( QString::fromUtf8(NATRON_APPLICATION_NAME) ).arg( QString::fromUtf8(NATRON_VERSION_STRING) ).arg( QString::fromUtf8(GIT_COMMIT) ).arg( QString::fromUtf8(GIT_BRANCH) ).arg( QString::fromUtf8(__DATE__) );
            std::cout << msg.toStdString() << std::endl;
            error = 1;

            return;
        }
    }

    {
        QStringList::iterator it = hasToken( QString::fromUtf8("help"), QString::fromUtf8("h") );
        if ( it != args.end() ) {
            CLArgs::printUsage( args[0].toStdString() );
            error = 1;

            return;
        }
    }

    {
        QStringList::iterator it = hasToken( QString::fromUtf8("background"), QString::fromUtf8("b") );
        if ( it != args.end() ) {
            isBackground = true;
            args.erase(it);
        }
    }

    {
        QStringList::iterator it = hasToken( QString::fromUtf8("interpreter"), QString::fromUtf8("t") );
        if ( it != args.end() ) {
            isInterpreterMode = true;
            isBackground = true;
            std::cout << QObject::tr("Note: -t argument given, loading in command-line interpreter mode, only Python commands / scripts are accepted").toStdString()
                      << std::endl;
            args.erase(it);
        }
    }

    {
        QStringList::iterator it = hasToken( QString::fromUtf8("render-stats"), QString::fromUtf8("s") );
        if ( it != args.end() ) {
            enableRenderStats = true;
            args.erase(it);
        }
    }

    {
        QStringList::iterator it = hasToken( QString::fromUtf8(NATRON_BREAKPAD_PROCESS_PID), QString() );
        if ( it != args.end() ) {
            ++it;
            if ( it != args.end() ) {
                breakpadProcessPID = it->toLongLong();
                args.erase(it);
            } else {
                std::cout << QObject::tr("You must specify the breakpad process executable file path").toStdString() << std::endl;
                error = 1;

                return;
            }
        }
    }

    {
        QStringList::iterator it = hasToken( QString::fromUtf8(NATRON_BREAKPAD_PROCESS_EXEC), QString() );
        if ( it != args.end() ) {
            ++it;
            if ( it != args.end() ) {
                breakpadProcessFilePath = *it;
                args.erase(it);
            } else {
                std::cout << QObject::tr("You must specify the breakpad process executable file path").toStdString() << std::endl;
                error = 1;

                return;
            }
        }
    }

    {
        QStringList::iterator it = hasToken( QString::fromUtf8(NATRON_BREAKPAD_CLIENT_FD_ARG), QString() );
        if ( it != args.end() ) {
            ++it;
            if ( it != args.end() ) {
                breakpadPipeClientID = it->toInt();
                args.erase(it);
            } else {
                std::cout << QObject::tr("You must specify the breakpad pipe client FD").toStdString() << std::endl;
                error = 1;

                return;
            }
        }
    }

    {
//.........这里部分代码省略.........

//.........这里部分代码省略.........
            QgsDebugMsg( "Found y field: " + ( *it ) );
            mYFieldIndex = fieldPos;
          }

          QgsDebugMsg( "Adding field: " + ( *it ) );
          // assume that the field could be integer or double
          couldBeInt.insert( fieldPos, true );
          couldBeDouble.insert( fieldPos, true );
          fieldPos++;
        }
      }
      QgsDebugMsg( "Field count for the delimited text file is " + QString::number( attributeFields.size() ) );
      hasFields = true;
    }
    else if ( mXFieldIndex != -1 && mYFieldIndex != -1 )
    {
      mNumberFeatures++;

      // split the line on the delimiter
      QStringList parts;
      if ( mDelimiterType == "regexp" )
        parts = line.split( mDelimiterRegexp );
      else
        parts = line.split( mDelimiter );

      // Skip malformed lines silently. Report line number with nextFeature()
      if ( attributeFields.size() != parts.size() )
      {
        continue;
      }

      // Get the x and y values, first checking to make sure they
      // aren't null.
      QString sX = parts[mXFieldIndex];
      QString sY = parts[mYFieldIndex];

      bool xOk = true;
      bool yOk = true;
      double x = sX.toDouble( &xOk );
      double y = sY.toDouble( &yOk );

      if ( xOk && yOk )
      {
        if ( !firstPoint )
        {
          mExtent.combineExtentWith( x, y );
        }
        else
        { // Extent for the first point is just the first point
          mExtent.set( x, y, x, y );
          firstPoint = false;
        }
      }

      int i = 0;
      for ( QStringList::iterator it = parts.begin(); it != parts.end(); ++it, ++i )
      {
        // try to convert attribute values to integer and double
        if ( couldBeInt[i] )
        {
          it->toInt( &couldBeInt[i] );
        }
        if ( couldBeDouble[i] )
        {
          it->toDouble( &couldBeDouble[i] );
        }
      }
    }
  }

  // now it's time to decide the types for the fields
  for ( QgsFieldMap::iterator it = attributeFields.begin(); it != attributeFields.end(); ++it )
  {
    if ( couldBeInt[it.key()] )
    {
      it->setType( QVariant::Int );
      it->setTypeName( "integer" );
    }
    else if ( couldBeDouble[it.key()] )
    {
      it->setType( QVariant::Double );
      it->setTypeName( "double" );
    }
  }

  if ( mXFieldIndex != -1 && mYFieldIndex != -1 )
  {
    QgsDebugMsg( "Data store is valid" );
    QgsDebugMsg( "Number of features " + QString::number( mNumberFeatures ) );
    QgsDebugMsg( "Extents " + mExtent.toString() );

    mValid = true;
  }
  else
  {
    QgsDebugMsg( "Data store is invalid. Specified x,y fields do not match those in the database" );
  }
  QgsDebugMsg( "Done checking validity" );

}