AttAccessLambdaCreationFunctions.h

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 *  Copyright 2018 Rice University                                           *
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#ifndef PDB_ATTACCESSLAMBDACREATIONFUNCTIONS_H
#define PDB_ATTACCESSLAMBDACREATIONFUNCTIONS_H

#include <LambdaTree.h>
#include <AttAccessLambda.h>
#include <Handle.h>
#include <Ptr.h>

namespace  pdb {

template <typename ReturnType, typename ClassType>
LambdaTree<Ptr<ReturnType>> makeLambdaUsingMember(std::string inputTypeName,
                                                  std::string attName,
                                                  std::string attType,
                                                  Handle<ClassType>& var,
                                                  ReturnType* member,
                                                  size_t offset) {
  PDB_COUT << "makeLambdaUsingMember: input type code is " << var.getExactTypeInfoValue() << std::endl;
  return LambdaTree<Ptr<ReturnType>>(std::make_shared<AttAccessLambda<ReturnType, ClassType>>(inputTypeName,
                                                                                              attName,
                                                                                              attType,
                                                                                              var,
                                                                                              offset));
}

extern void* someRandomPointer;

#define makeLambdaFromMember(VAR, MEMBER)                                                       \
    (makeLambdaUsingMember(                                                                     \
        getTypeName<std::remove_reference<decltype(*VAR)>::type>(),                             \
        std::string(#MEMBER),                                                                   \
        getTypeName<typename std::remove_reference<decltype(VAR->MEMBER)>::type>(),             \
        VAR,                                                                                    \
        (decltype(VAR->MEMBER)*)someRandomPointer,                                              \
        ((char*)&(((std::remove_reference<decltype(*VAR)>::type*)someRandomPointer)->MEMBER)) - \
            (char*)someRandomPointer))

}

#endif //PDB_ATTACCESSLAMBDACREATIONFUNCTIONS_H