Evaluate an object's method or datamember (or chain of them) to get a number. More...

#include <ExpressionVar.h>

Inheritance diagram for reco::parser::ExpressionVar:

Public Member Functions
	ExpressionVar (const std::vector< MethodInvoker > &methods, method::TypeCode retType)

	ExpressionVar (const ExpressionVar &var)

virtual double	value (const edm::ObjectWithDict &o) const

	~ExpressionVar ()

Public Member Functions inherited from reco::parser::ExpressionBase
virtual	~ExpressionBase ()

Static Public Member Functions
static void	delStorage (edm::ObjectWithDict &obj)

static bool	isValidReturnType (method::TypeCode)

static bool	makeStorage (edm::ObjectWithDict &obj, const edm::TypeWithDict &retType)

static double	objToDouble (const edm::ObjectWithDict &obj, method::TypeCode type)

Private Member Functions
void	initObjects_ ()

Private Attributes
std::vector< MethodInvoker >	methods_

std::vector< bool >	needsDestructor_

std::vector< edm::ObjectWithDict >	objects_

method::TypeCode	retType_

Detailed Description

Evaluate an object's method or datamember (or chain of them) to get a number.

Definition at line 21 of file ExpressionVar.h.

Constructor & Destructor Documentation

ExpressionVar::ExpressionVar	(	const std::vector< MethodInvoker > &	methods,
		method::TypeCode	retType
	)

Definition at line 11 of file ExpressionVar.cc.

References initObjects_().

                                                                                          : 
   methods_(methods), retType_(retType) { 
     initObjects_();
 }

ExpressionVar::~ExpressionVar ( )

Definition at line 21 of file ExpressionVar.cc.

References delStorage(), and objects_.

                               {
     for(std::vector<edm::ObjectWithDict>::iterator it = objects_.begin(); it != objects_.end(); ++it) {
         delStorage(*it);
     }
     objects_.clear();
 }

ExpressionVar::ExpressionVar ( const ExpressionVar & var )

Definition at line 16 of file ExpressionVar.cc.

References initObjects_().

                                                        :
   methods_(other.methods_), retType_(other.retType_) { 
     initObjects_();
 }

Member Function Documentation

void ExpressionVar::delStorage ( edm::ObjectWithDict & obj )

static

delete an objecty, if needed this method is used also from the LazyInvoker code

Definition at line 29 of file ExpressionVar.cc.

References edm::ObjectWithDict::address(), edm::TypeWithDict::deallocate(), edm::TypeWithDict::isPointer(), edm::TypeWithDict::isReference(), AlCaHLTBitMon_ParallelJobs::p, and edm::ObjectWithDict::typeOf().

Referenced by ~ExpressionVar(), and reco::parser::SingleInvoker::~SingleInvoker().

                                                 {
     if (obj.address() != 0) {
         if (obj.typeOf().isPointer() || obj.typeOf().isReference()) {
             // just delete a void *, as that's what it was
             void **p = static_cast<void **>(obj.address());
             delete p;
         } else {
             //std::cout << "Calling Destruct on a " << obj.typeOf().qualifiedName() << std::endl;
             obj.typeOf().deallocate(obj.address());
         }
     }
 }

void ExpressionVar::initObjects_ ( )

private

Definition at line 42 of file ExpressionVar.cc.

References makeStorage(), methods_, needsDestructor_, and objects_.

Referenced by ExpressionVar().

                                  {
     objects_.resize(methods_.size());
     std::vector<MethodInvoker>::const_iterator it = methods_.begin(), ed = methods_.end();
     std::vector<edm::ObjectWithDict>::iterator itobj = objects_.begin();
     for (; it != ed; ++it, ++itobj) {
        if(it->isFunction()) {
           edm::TypeWithDict retType = it->method().finalReturnType();
           needsDestructor_.push_back(makeStorage(*itobj, retType));
        } else {
           *itobj = edm::ObjectWithDict();
           needsDestructor_.push_back(false);
        }
     }
 }

bool ExpressionVar::isValidReturnType ( method::TypeCode retType )

static

Definition at line 74 of file ExpressionVar.cc.

References reco::method::boolType, reco::method::charType, reco::method::doubleType, reco::method::enumType, reco::method::floatType, reco::method::intType, align::invalid, reco::method::longType, PFRecoTauDiscriminationAgainstElectronMVA3GBR_cfi::method, run_regression::ret, reco::method::shortType, reco::method::uCharType, reco::method::uIntType, reco::method::uLongType, and reco::method::uShortType.

Referenced by reco::parser::ExpressionVarSetter::push(), and reco::parser::SingleInvoker::retToDouble().

 {
    using namespace method;
    bool ret = false;
    switch(retType) {
       case(doubleType) : ret = true; break;
       case(floatType ) : ret = true; break;
       case(intType   ) : ret = true; break;
       case(uIntType  ) : ret = true; break;
       case(shortType ) : ret = true; break;
       case(uShortType) : ret = true; break;
       case(longType  ) : ret = true; break;
       case(uLongType ) : ret = true; break;
       case(charType  ) : ret = true; break;
       case(uCharType ) : ret = true; break;
       case(boolType  ) : ret = true; break;
       case(enumType  ) : ret = true; break;
       case(invalid):
       default:
         break;
    }
    return ret;
 }

bool ExpressionVar::makeStorage	(	edm::ObjectWithDict &	obj,
		const edm::TypeWithDict &	retType
	)

static

allocate an object to hold the result of a given member (if needed) this method is used also from the LazyInvoker code returns true if objects returned from this will require a destructor

Definition at line 58 of file ExpressionVar.cc.

References edm::TypeWithDict::allocate(), edm::TypeWithDict::byName(), edm::ObjectWithDict::byType(), edm::TypeWithDict::isClass(), edm::TypeWithDict::isPointer(), edm::TypeWithDict::isReference(), and run_regression::ret.

Referenced by initObjects_(), and reco::parser::SingleInvoker::SingleInvoker().

                                                                                  {
     bool ret = false;
     static edm::TypeWithDict tVoid(edm::TypeWithDict::byName("void"));
     if (retType == tVoid) {
         obj = edm::ObjectWithDict::byType(tVoid);
     } else if (retType.isPointer() || retType.isReference()) {
         // in this case, I have to allocate a void *, not an object!
         obj = edm::ObjectWithDict(retType, new void *);
     } else {
         obj = edm::ObjectWithDict(retType, retType.allocate());
         ret = retType.isClass();
         //std::cout << "ExpressionVar: reserved memory at "  << obj.address() << " for a " << retType.qualifiedName() << " returned by " << member.name() << std::endl;
     }
     return ret;
 }

double ExpressionVar::objToDouble	(	const edm::ObjectWithDict &	obj,
		method::TypeCode	type
	)

static

performs the needed conversion from void * to double this method is used also from the ExpressionLazyVar code

Definition at line 115 of file ExpressionVar.cc.

References edm::ObjectWithDict::address(), reco::method::boolType, reco::method::charType, reco::method::doubleType, reco::method::enumType, reco::method::floatType, reco::method::intType, reco::method::longType, PFRecoTauDiscriminationAgainstElectronMVA3GBR_cfi::method, run_regression::ret, reco::method::shortType, reco::method::uCharType, reco::method::uIntType, reco::method::uLongType, and reco::method::uShortType.

Referenced by reco::parser::SingleInvoker::retToDouble(), and value().

                                                                             {
   using namespace method;
   void * addr = obj.address();
   double ret = 0;
   switch(type) {
   case(doubleType) : ret = * static_cast<double         *>(addr); break;
   case(floatType ) : ret = * static_cast<float          *>(addr); break;
   case(intType   ) : ret = * static_cast<int            *>(addr); break;
   case(uIntType  ) : ret = * static_cast<unsigned int   *>(addr); break;
   case(shortType ) : ret = * static_cast<short          *>(addr); break;
   case(uShortType) : ret = * static_cast<unsigned short *>(addr); break;
   case(longType  ) : ret = * static_cast<long           *>(addr); break;
   case(uLongType ) : ret = * static_cast<unsigned long  *>(addr); break;
   case(charType  ) : ret = * static_cast<char           *>(addr); break;
   case(uCharType ) : ret = * static_cast<unsigned char  *>(addr); break;
   case(boolType  ) : ret = * static_cast<bool           *>(addr); break;
   case(enumType  ) : ret = * static_cast<int            *>(addr); break;
   default:
   assert(false);
   };
   return ret;
 }

double ExpressionVar::value ( const edm::ObjectWithDict & o ) const

virtual

Implements reco::parser::ExpressionBase.

Definition at line 98 of file ExpressionVar.cc.

References end, methods_, needsDestructor_, python.connectstrParser::o, objects_, objToDouble(), run_regression::ret, and retType_.

                                                              {
   edm::ObjectWithDict ro = o;
   std::vector<MethodInvoker>::const_iterator itm, end = methods_.end();
   std::vector<edm::ObjectWithDict>::iterator      ito;
   for(itm = methods_.begin(), ito = objects_.begin(); itm != end; ++itm, ++ito) {
       ro = itm->invoke(ro, *ito);
   }
   double ret = objToDouble(ro, retType_);
   std::vector<edm::ObjectWithDict>::reverse_iterator rito, rend = objects_.rend();;
   std::vector<bool>::const_reverse_iterator ritb;
   for(rito = objects_.rbegin(), ritb = needsDestructor_.rbegin(); rito != rend; ++rito, ++ritb) {
       if (*ritb) rito->typeOf().destruct(rito->address(), false);
   }
   return ret;
 }