named_tuples.h

// Description: Named tuples

#ifndef PASTELSYS_NAMED_TUPLES_H
#define PASTELSYS_NAMED_TUPLES_H

#include "pastel/sys/hashing.h"

#include <boost/operators.hpp>

#define PASTEL_NAMED_TUPLE2(Type, A, a, B, b) \
   class Type \
       : boost::equality_comparable<Type> \
   { \
   public: \
       Type( \
           PASTEL_REMOVE_BRACKETS(A) a##_, \
           PASTEL_REMOVE_BRACKETS(B) b##_) \
           : a(std::move(a##_)) \
           , b(std::move(b##_)) \
       { \
       } \
       \
       bool operator==(const Type& that) const \
       { \
           return  \
               a == that.a && \
               b == that.b; \
       } \
       \
       Pastel::hash_integer hash() const \
       { \
           return Pastel::combineHash( \
               Pastel::computeHash(a), \
               Pastel::computeHash(b)); \
       } \
       \
       PASTEL_REMOVE_BRACKETS(A) a; \
       PASTEL_REMOVE_BRACKETS(B) b; \
   }

#define PASTEL_NAMED_TUPLE3(Type, A, a, B, b, C, c) \
   class Type \
       : boost::equality_comparable<Type> \
   { \
   public: \
       Type( \
           PASTEL_REMOVE_BRACKETS(A) a##_, \
           PASTEL_REMOVE_BRACKETS(B) b##_, \
           PASTEL_REMOVE_BRACKETS(C) c##_) \
           : a(std::move(a##_)) \
           , b(std::move(b##_)) \
           , c(std::move(c##_)) \
       { \
       } \
       \
       bool operator==(const Type& that) const \
       { \
           return  \
               a == that.a && \
               b == that.b && \
               c == that.c; \
       } \
       \
       Pastel::hash_integer hash() const \
       { \
           return Pastel::combineHash( \
               Pastel::combineHash( \
               Pastel::computeHash(a), \
               Pastel::computeHash(b)), \
               Pastel::computeHash(c)); \
       } \
       \
       PASTEL_REMOVE_BRACKETS(A) a; \
       PASTEL_REMOVE_BRACKETS(B) b; \
       PASTEL_REMOVE_BRACKETS(C) c; \
   }

#endif