FWExpressionEvaluator Class Reference

#include <Fireworks/Core/interface/FWExpressionEvaluator.h>

Public Member Functions
double	evalExpression (const void *) const
const std::string &	expression () const
	FWExpressionEvaluator (const std::string &iExpression, const std::string &iClassName)
void	setClassName (const std::string &)
void	setExpression (const std::string &)
virtual	~FWExpressionEvaluator ()

Private Attributes
std::string	m_className
reco::parser::ExpressionPtr	m_expr
std::string	m_expression
edm::TypeWithDict	m_type

Detailed Description

Description: <one line="" class="" summary>="">

Usage: <usage>

Definition at line 31 of file FWExpressionEvaluator.h.

Constructor & Destructor Documentation

FWExpressionEvaluator()

FWExpressionEvaluator::FWExpressionEvaluator	(	const std::string &	iExpression,
		const std::string &	iClassName
	)

Definition at line 37 of file FWExpressionEvaluator.cc.

References setExpression().

    : m_className(iClassName), m_type(edm::TypeWithDict::byName(iClassName)) {
  setExpression(iExpression);
}

~FWExpressionEvaluator()

FWExpressionEvaluator::~FWExpressionEvaluator ( )

virtual

Definition at line 47 of file FWExpressionEvaluator.cc.

{}

Member Function Documentation

evalExpression()

double FWExpressionEvaluator::evalExpression

(

const void *

iObject

)

const

Definition at line 109 of file FWExpressionEvaluator.cc.

References m_expr, m_expression, m_type, and EcalTangentSkim_cfg::o.

                                                                      {
  if (m_expression.empty() || !m_expr.get()) {
    return 0;
  }

  edm::ObjectWithDict o(m_type, const_cast<void*>(iObject));
  return m_expr->value(o);
}

expression()

const std::string & FWExpressionEvaluator::expression

(

)

const

Definition at line 107 of file FWExpressionEvaluator.cc.

References m_expression.

{ return m_expression; }

setClassName()

void FWExpressionEvaluator::setClassName

(

const std::string &

iClassName

)

Definition at line 94 of file FWExpressionEvaluator.cc.

References edm::TypeWithDict::byName(), m_className, m_expression, m_type, and setExpression().

                                                                    {
  //NOTE: How do we handle the case where the filter was created before
  // the library for the class was loaded and therefore we don't have
  // a dictionary for it?

  m_className = iClassName;
  m_type = edm::TypeWithDict::byName(iClassName);
  setExpression(m_expression);
}

setExpression()

void FWExpressionEvaluator::setExpression

(

const std::string &

iExpression

)

Throws an FWExpressionException if there is a problem

Definition at line 64 of file FWExpressionEvaluator.cc.

References reco::parser::baseExceptionWhat(), MillePedeFileConverter_cfg::e, fireworks::expression::indexFromNewFormatToOldFormat(), m_expr, m_expression, m_type, fireworks::expression::oldToNewFormat(), parse(), AlCaHLTBitMon_QueryRunRegistry::string, and groupFilesInBlocks::temp.

Referenced by FWExpressionEvaluator(), and setClassName().

                                                                      {
  if (m_type != edm::TypeWithDict() && !iExpression.empty()) {
    using namespace fireworks::expression;

    //Backwards compatibility with old format
    std::string temp = oldToNewFormat(iExpression);

    //now setup the parser
    using namespace boost::spirit::classic;
    reco::parser::ExpressionPtr tmpPtr;
    reco::parser::Grammar grammar(tmpPtr, m_type);
    try {
      if (parse(temp.c_str(), grammar.use_parser<1>() >> end_p, space_p).full) {
        m_expr = tmpPtr;
        m_expression = iExpression;
      } else {
        throw FWExpressionException("syntax error", -1);
        //std::cout <<"failed to parse "<<iExpression<<" because of syntax error"<<std::endl;
      }
    } catch (const reco::parser::BaseException& e) {
      //NOTE: need to calculate actual position before doing the regex
      throw FWExpressionException(reco::parser::baseExceptionWhat(e),
                                  indexFromNewFormatToOldFormat(temp, e.where - temp.c_str(), iExpression));
      //std::cout <<"failed to parse "<<iExpression<<" because "<<reco::parser::baseExceptionWhat(e)<<std::endl;
    }
  } else {
    m_expression = iExpression;
  }
}

Member Data Documentation

m_className

std::string FWExpressionEvaluator::m_className

private

Definition at line 56 of file FWExpressionEvaluator.h.

Referenced by setClassName().

m_expr

reco::parser::ExpressionPtr FWExpressionEvaluator::m_expr

private

Definition at line 57 of file FWExpressionEvaluator.h.

Referenced by evalExpression(), and setExpression().

m_expression

std::string FWExpressionEvaluator::m_expression

private

Definition at line 55 of file FWExpressionEvaluator.h.

Referenced by evalExpression(), expression(), setClassName(), and setExpression().

m_type

edm::TypeWithDict FWExpressionEvaluator::m_type

private

Definition at line 58 of file FWExpressionEvaluator.h.

Referenced by evalExpression(), setClassName(), and setExpression().