#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 34 of file FWExpressionEvaluator.h.

Constructor & Destructor Documentation

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 ( )

virtual

Definition at line 50 of file FWExpressionEvaluator.cc.

51 {

52 }

Member Function Documentation

double FWExpressionEvaluator::evalExpression ( const void * iObject ) const

Definition at line 122 of file FWExpressionEvaluator.cc.

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

 {
    if(m_expression.empty() || !m_expr.get()) {
       return 0;
    }
 
    edm::ObjectWithDict o(m_type, const_cast<void *>(iObject));
    return m_expr->value(o);
 }

const std::string & FWExpressionEvaluator::expression ( ) const

Definition at line 116 of file FWExpressionEvaluator.cc.

References m_expression.

 {
    return m_expression;
 }

void FWExpressionEvaluator::setClassName ( const std::string & iClassName )

Definition at line 101 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);
 }

void FWExpressionEvaluator::setExpression ( const std::string & iExpression )

Throws an FWExpressionException if there is a problem

Definition at line 70 of file FWExpressionEvaluator.cc.

References reco::parser::baseExceptionWhat(), alignCSCRings::e, fireworks::expression::indexFromNewFormatToOldFormat(), m_expr, m_expression, m_type, fireworks::expression::oldToNewFormat(), triggerExpression::parse(), edm::TypeWithDict::size(), AlCaHLTBitMon_QueryRunRegistry::string, and groupFilesInBlocks::temp.

Referenced by FWExpressionEvaluator(), and setClassName().

 {
    if(m_type != edm::TypeWithDict() && iExpression.size()) {
       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;
    }
 }