#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 33 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.

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

References setExpression().

◆ ~FWExpressionEvaluator()

FWExpressionEvaluator::~FWExpressionEvaluator ( )

virtual

Definition at line 47 of file FWExpressionEvaluator.cc.

47 {}

Member Function Documentation

◆ evalExpression()

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

Definition at line 109 of file FWExpressionEvaluator.cc.

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

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

◆ expression()

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

Definition at line 107 of file FWExpressionEvaluator.cc.

107 { return m_expression; }

References m_expression.

◆ setClassName()

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

Definition at line 94 of file FWExpressionEvaluator.cc.

                                                                     {
   //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);
 }

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

◆ setExpression()

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

Throws an FWExpressionException if there is a problem

Definition at line 64 of file FWExpressionEvaluator.cc.

                                                                       {
   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;
   }
 }