meta: Renaming

include/utl/com/_1wire.h

@@ -709,8 +709,8 @@ namespace _1wire_i_det {
     * \param   _Tp  Type to check
     * \return  True if _Tp is a 1-wire interface
     */
-   template <typename _Tp>
-   constexpr bool _1Wire_i = _1wire_i_det::is_1wire_<_Tp>::value;
+//   template <typename _Tp>
+//   constexpr bool _1Wire_i = _1wire_i_det::is_1wire_<_Tp>::value;
 #endif
 
 //!@}

include/utl/com/_1wire_id.h

@@ -70,7 +70,7 @@ namespace utl {
        *    \arg  1    dev_id rhs is smaller than dev_id lhs
        */
       static int compare (const _1wire_id_t& lhs, const _1wire_id_t& rhs) noexcept {
-         auto p = std::mismatch (lhs.rbegin(), lhs.rend(), rhs.rbegin(), rhs.rend());
+         auto p = std::mismatch (lhs.rbegin(), lhs.rend(), rhs.rbegin());
          if (p.first == lhs.rend())       return 0;
          else if (*p.first < *p.second)   return -1;
          else                             return 1;

include/utl/com/i2c.h

@@ -275,8 +275,8 @@ namespace utl {
     * \param   _Tp  Type to check
     * \return  True if _Tp is a i2c interface
     */
-   template <typename _Tp>
-   constexpr bool I2c_i = i2c_i_details::is_i2c_<_Tp>::value;
+//   template <typename _Tp>
+//   constexpr bool I2c_i = i2c_i_details::is_i2c_<_Tp>::value;
 #endif
 
 //!@}

include/utl/com/spi.h

@@ -321,8 +321,8 @@ namespace utl {
     * \param   _Tp  Type to check
     * \return  True if _Tp is a spi interface
     */
-   template <typename _Tp>
-   constexpr bool Spi_i = spi_i_details::is_spi_<_Tp>::value;
+//   template <typename _Tp>
+//   constexpr bool Spi_i = spi_i_details::is_spi_<_Tp>::value;
 #endif
 //! @}
 

include/utl/container/id.h

@@ -157,9 +157,8 @@ namespace utl {
        * \param   bit  The bit location we want to read
        */
       constexpr bool bit (uint8_t bit) const noexcept {
-         value_type one = 1;
-         uint8_t den = 8*sizeof(_Tp)/sizeof(uint8_t);
-         return traits_t::Ref (_data, bit/den) & (one << ((bit % den)-1));
+         return traits_t::Ref (_data, bit/(8*sizeof(_Tp))) &
+                (static_cast<value_type>(0x01) << ((bit % (8*sizeof(_Tp)))-1));
       }
 
       /*!

include/utl/core/concepts/concepts.h

@@ -1,44 +0,0 @@
-/*!
- * \file   /utl/impl/concepts.h
- * \brief  Concept support header
- *
- * Copyright (C) 2018 Christos Choutouridis
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as
- * published by the Free Software Foundation, either version 3
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- */
-#ifndef __utl_impl_concepts_h__
-#define __utl_impl_concepts_h__
-
-/*!
- * utl inner concept preprocessor flag
- * \defgroup crtp
- * \ingroup impl
- */
-//!@{
-#if defined __cpp_concepts
-#define _utl_have_concepts (1)
-#endif
-
-/*!
- * requires keyword wrapper
- */
-#if defined _utl_have_concepts
-   #define _requires(_r_) requires (_r_)
-#else
-   #define _requires(_r_)
-#endif
-
-//!@}
-#endif /* __utl_impl_concepts_h__ */

include/utl/core/crtp.h

@@ -43,6 +43,7 @@ namespace utl {
    #define _CRTP_IMPL(T) \
       constexpr T& impl() { return *static_cast<T*>(this); } \
       constexpr const T& impl() const { return *static_cast<const T*>(this); }
+
 }
 //!@}
 #endif /* __utl_impl_crtp_h__ */

include/utl/core/types.h

@@ -24,6 +24,8 @@
 #include <cstddef>
 #include <cstdint>
 
+//#include <type_traits>
+
 namespace utl {
    //! @{ \name byte and word types
    using byte_t   = uint8_t;     //!< 8 bits wide

include/utl/core/version.h

@@ -2,7 +2,7 @@
  * \file   /utl/core/version.h
  * \brief  version and cpp version checks
  *
- * Copyright (C) 2018 Christos Choutouridis
+ * Copyright (C) 2018-2019 Christos Choutouridis
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Lesser General Public License as
@@ -26,10 +26,10 @@
 //!@{
 
 //! utl version
-#define UTL_VERSION       "0.0.1"
+#define UTL_VERSION       "0.1.0"
 #define UTL_VERSION_MAJOR  0
-#define UTL_VERSION_MINOR  0
-#define UTL_VERSION_PATCH  1
+#define UTL_VERSION_MINOR  1
+#define UTL_VERSION_PATCH  0
 #define UTL_VERSION_VALUE ( (UTL_VERSION_MAJOR * 10000) \
                           + (UTL_VERSION_MINOR * 100)   \
                           + UTL_VERSION_PATCH)
@@ -40,8 +40,6 @@
 #define CXX_VER_STD_14     201402L
 #define CXX_VER_STD_17     201703L
 
-//#include <type_traits>
-
 //! Check for variable templates
 #ifndef CXX_VARIABLE_TEMPLATES
  #ifdef  __cpp_variable_templates
@@ -51,15 +49,6 @@
  #endif
 #endif
 
-//! Check integer sequence
-#ifndef CXX_INTEGER_SEQUENCE
- #ifdef __cpp_lib_integer_sequence
-  #define CXX_INTEGER_SEQUENCE __cpp_lib_integer_sequence
- #else
-  #define CXX_INTEGER_SEQUENCE (CXX_VER >= CXX_VER_STD_14)
- #endif
-#endif
-
 //! Check concepts
 #ifndef CXX_CONCEPTS
  #ifdef __cpp_concepts
@@ -86,9 +75,8 @@
  #endif
 #endif
 
-
 /*
- * Workaround inspection
+ * Workaround inspections
  */
 #if defined(__GNUC__) && (__GNUC__ < 5)
  // https://wg21.link/cwg1558
@@ -97,8 +85,8 @@
 
 
 //! Base library requirement
-#if __cplusplus < CXX_VER_STD_11
-#error "uTL requires C++11"
+#if CXX_VER < CXX_VER_STD_14
+#error "uTL requires C++14"
 #endif
 
 //!@}

include/utl/dev/dev_iterators.h

@@ -437,8 +437,8 @@ namespace utl {
        * \param   _Tp  Type to check
        * \return  True if _Tp is a spi interface
        */
-      template <typename _Tp>
-      constexpr bool Outdev_it = outdev_it_details::is_outdev_it_<_Tp>::value;
+//      template <typename _Tp>
+//      constexpr bool Outdev_it = outdev_it_details::is_outdev_it_<_Tp>::value;
    #endif
    //! @}
 
@@ -714,8 +714,8 @@ namespace utl {
        * \param   _Tp  Type to check
        * \return  True if _Tp is a spi interface
        */
-      template <typename _Tp>
-      constexpr bool Indev_it = indev_it_details::is_indev_it_<_Tp>::value;
+//      template <typename _Tp>
+//      constexpr bool Indev_it = indev_it_details::is_indev_it_<_Tp>::value;
    #endif
    //! @}
 
@@ -998,8 +998,8 @@ namespace utl {
        * \param   _Tp  Type to check
        * \return  True if _Tp is a spi interface
        */
-      template <typename _Tp>
-      constexpr bool Idxdev_it = idxdev_it_details::is_idxdev_it_<_Tp>::value;
+//      template <typename _Tp>
+//      constexpr bool Idxdev_it = idxdev_it_details::is_idxdev_it_<_Tp>::value;
    #endif
    //! @}
 

include/utl/meta/void.h → include/utl/meta/detection.h

@@ -1,8 +1,10 @@
 /*!
- * \file    void.h
- * \brief   void_t meta-function
+ * \file    detection.h
+ * \brief   Detection idiom based on WG21's N4502[1] from Walter E. Brown
  *
- * Copyright (C) 2018 Christos Choutouridis
+ * [1]: www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4502.pdf
+ *
+ * Copyright (C) 2018-2019 Christos Choutouridis
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Lesser General Public License as
@@ -17,14 +19,17 @@
  * You should have received a copy of the GNU Lesser General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
-#ifndef __utl_meta_void_h__
-#define __utl_meta_void_h__
+#ifndef __utl_meta_detection_h__
+#define __utl_meta_detection_h__
 
 #include <utl/core/impl.h>
+#include <utl/meta/logical.h>
+#include <type_traits>
 
 /*!
  * \ingroup meta
- * \defgroup void
+ * \defgroup detection
+ * Detection idiom support header.
  */
 //! @{
 
@@ -42,7 +47,7 @@ namespace meta {
       };
       //! void_t type alias
       template<typename... _Ts>
-      using void_t = type_of<void_<_Ts...>>;
+      using void_t = eval<void_<_Ts...>>;
    #else
       //! void_ type alias
       template <typename...> using void_  = void;

include/utl/meta/idx_sequence.h

@@ -2,7 +2,7 @@
  * \file    pack.h
  * \brief   Template meta-programming parameter pack container
  *
- * Copyright (C) 2018 Christos Choutouridis
+ * Copyright (C) 2018-2019 Christos Choutouridis
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Lesser General Public License as
@@ -65,8 +65,8 @@ namespace meta {
       // Builds an index_tuple<0, 1, 2, ..., _Num-1>.
       template<size_t _Num>
       struct make_index_tuple_
-         : it_cat_<type_<make_index_tuple_<_Num / 2>>,
-                   type_<make_index_tuple_<_Num - _Num / 2>>>
+         : it_cat_<eval<make_index_tuple_<_Num / 2>>,
+                   eval<make_index_tuple_<_Num - _Num / 2>>>
       { };
       // termination specialization for 1
       template<>
@@ -81,7 +81,7 @@ namespace meta {
 
       // factory type
       template<typename _Tp, _Tp _Num,
-               typename _ISeq = type_<make_index_tuple_<_Num>>>
+               typename _ISeq = eval<make_index_tuple_<_Num>>>
       struct make_integer_sequence_;
 
       template<typename _Tp, _Tp _Num,  size_t... _Idx>
@@ -94,7 +94,7 @@ namespace meta {
    //! Alias template make_integer_sequence
    //! Complexity \f$ O(log N) \f$
    template<typename _Tp, _Tp N>
-   using make_integer_sequence = type_<detail::make_integer_sequence_<_Tp, N>>;
+   using make_integer_sequence = eval<detail::make_integer_sequence_<_Tp, N>>;
 
    //! Alias template make_index_sequence
    //! Complexity \f$ O(log N) \f$

include/utl/meta/integral.h

@@ -2,7 +2,7 @@
  * \file    integralconstant.h
  * \brief   Template meta-programming integral constant
  *
- * Copyright (C) 2018 Christos Choutouridis
+ * Copyright (C) 2018-2019 Christos Choutouridis
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Lesser General Public License as
@@ -43,20 +43,20 @@ namespace meta {
       using type = nil_;
    };
 
-   //! Type alias for \p _Tp::type. Used to extract return type of metafunctions
+   //! Type alias for \p _Tp::type. Used to evaluate/extract return type of metafunctions
    template <typename _Tp>
-   using type_ = typename _Tp::type;
+   using eval = typename _Tp::type;
 
-   //! integral_constant
-   //! An Integral Constant is a holder class for a compile-time value of an integral type.
+   //! integral_
+   //! Integral Constant is a holder class for a compile-time value of an integral type.
    //! Every Integral Constant is also a null-ary Metafunction, returning itself.
    //! An integral constant object is implicitly convertible to the corresponding
    //! run-time value of the wrapped integral type
    //! @{
    template <typename _Tp, _Tp _v>
-   struct integral_constant {
+   struct integral_ {
       using value_type = _Tp;
-      using type       = integral_constant<_Tp, _v>;
+      using type       = integral_<_Tp, _v>;
 
       constexpr operator value_type() const noexcept {
          return value;
@@ -68,77 +68,73 @@ namespace meta {
    };
 
    template<typename _Tp, _Tp _v>
-   constexpr _Tp integral_constant<_Tp, _v>::value;
+   constexpr _Tp integral_<_Tp, _v>::value;
    //! @}
 
    //! Wrappers for basic types
    //! @{
 
-   //! integral constant
-   template <typename _Tp, _Tp _v>
-   using integral_c = integral_constant<_Tp, _v>;
-
    //! bool_ type: integral constant wrapper for bool
    template<bool _v>
-   using bool_ = integral_c<bool, _v>;
+   using bool_ = integral_<bool, _v>;
 
    using true_ = bool_<true>; //!< The type used as a compile-time boolean with true value.
    using false_ = bool_<false>; //!< The type used as a compile-time boolean with false value.
 
    //! int8_ type: integral constant wrapper for \c int8_t
    template<int8_t _v>
-   using int8_ = integral_c<int8_t, _v>;
+   using int8_ = integral_<int8_t, _v>;
    //! uint8_ type: integral constant wrapper for \c uint8_t
    template<uint8_t _v>
-   using uint8_ = integral_c<uint8_t, _v>;
+   using uint8_ = integral_<uint8_t, _v>;
 
    //! int16_ type: integral constant wrapper for \c int16_t
    template<int16_t _v>
-   using int16_ = integral_c<int16_t, _v>;
+   using int16_ = integral_<int16_t, _v>;
    //! uint16_ type: integral constant wrapper for \c uint16_t
    template<uint16_t _v>
-   using uint16_ = integral_c<uint16_t, _v>;
+   using uint16_ = integral_<uint16_t, _v>;
 
    //! int32_ type: integral constant wrapper for \c int32_t
    template<int32_t _v>
-   using int32_ = integral_c<int32_t, _v>;
+   using int32_ = integral_<int32_t, _v>;
    //! uint32_ type: integral constant wrapper for \c uint32_t
    template<uint32_t _v>
-   using uint32_ = integral_c<uint32_t, _v>;
+   using uint32_ = integral_<uint32_t, _v>;
 
    //! char_ type: integral constant wrapper for \c char
    template<char _v>
-   using char_ = integral_c<char, _v>;
+   using char_ = integral_<char, _v>;
 
    //! int_ type: integral constant wrapper for \c int
    template<int _v>
-   using int_ = integral_c<int, _v>;
+   using int_ = integral_<int, _v>;
 
    //! long_ type: integral constant wrapper for \c long
    template<long _v>
-   using long_ = integral_c<long, _v>;
+   using long_ = integral_<long, _v>;
 
-   //! index_t_ type: integral constant wrapper for \c index_t a.k.a std::size_t
+   //! index_ type: integral constant wrapper for \c index_t a.k.a std::size_t
    template<index_t _v>
-   using index_t_ = integral_c<index_t, _v>;
+   using index_ = integral_<index_t, _v>;
 
-   //! size_t_ type: integral constant wrapper for \c size_t a.k.a std::size_t
+   //! size_ type: integral constant wrapper for \c size_t a.k.a std::size_t
    template<size_t _v>
-   using size_t_ = integral_constant<size_t, _v>;
+   using size_ = integral_<size_t, _v>;
 
    //! Computes the size of the type \p _Tp.
    //! Complexity \f$ O(1) \f$.
    template <typename _Tp>
-   using sizeof_ = size_t_<sizeof(_Tp)>;
+   using sizeof_ = size_<sizeof(_Tp)>;
 
    //! Computes the alignment required for any instance of the type \p _Tp.
    //! Complexity \f$ O(1) \f$.
    template <typename _Tp>
-   using alignof_ = size_t_<alignof(_Tp)>;
+   using alignof_ = size_<alignof(_Tp)>;
    //! @}
 
    //! The last position we can express for indexing
-   using Npos = size_t_<index_t(-1)>;
+   using Npos = size_<index_t(-1)>;
 
 }}
 //!@}

include/utl/meta/invoke.h

@@ -1,6 +1,6 @@
 /*!
  * \file    invoke.h
- * \brief   Template meta-programming utilities
+ * \brief   Template meta-programming utilities for callables
  *
  * Copyright (C) 2018 Christos Choutouridis
  *
@@ -12,7 +12,7 @@
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Lesser General Public License for more details.
+ * GNU Lesser General Public License for more detail.
  *
  * You should have received a copy of the GNU Lesser General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
@@ -36,26 +36,10 @@ namespace utl {
 namespace meta{
 
    /*!
+    * \name meta:: invoke
     *
-    * \name invoke
-    * All Metafunction classes shall contain apply, which is Metafunction
-    *
-    * Metafunction:
-    * A metafunction is a class or a class template that represents a function invocable at compile-time.
-    * An non-nullary metafunction is invoked by instantiating the class template with particular template
-    * parameters (metafunction arguments). The result of the metafunction application is accessible
-    * through the instantiation's nested type typedef.
-    * All metafunction's arguments must be types (i.e. only type template parameters are allowed).
-    * A metafunction can have a variable number of parameters.
-    * A nullary metafunction is represented as a (template) class with a nested type typename member.
-    *
-    * Metafunction Class:
-    * A metafunction class is a certain form of metafunction representation that enables higher-order
-    * metaprogramming. More precisely, it's a class with a publicly-accessible nested Metafunction called
-    * apply. Correspondingly, a metafunction class invocation is defined as invocation of its nested apply
-    * metafunction.
-    *
-    * Concept here is `Invokable` (contains apply metafunction)
+    * A meta-programming invoke() analogous. A meta:: `invocable` shall contain a nested
+    * template type named `apply` which is bind to actual invocable meta-function.
     */
    //! @{
 
@@ -78,7 +62,7 @@ namespace meta{
 
    //! identity type alias
    template <typename _Tp>
-   using identity_t = type_<identity<_Tp>>;
+   using identity_t = eval<identity<_Tp>>;
    //! @}
 
    //! Is applicable trait
@@ -100,7 +84,7 @@ namespace meta{
 
       template<typename F, typename... T>
       struct is_applicable_q_ {
-         template<typename G, typename Ret= type_<use_<G, T...>>>
+         template<typename G, typename Ret= eval<use_<G, T...>>>
             static Ret check (int);  //< T.. can be passed to G
          template<typename...>
             static nil_ check (...); //< all other combinations
@@ -121,17 +105,17 @@ namespace meta{
 
    //! check if we can instantiate \p F with parameters \p T
    template<template<typename...> class F, typename... T>
-   using is_applicable_t = type_<
+   using is_applicable_t = eval<
          detail::is_applicable_<F, T...>
    >;
    //! check if we can instantiate \p Q with parameters \p T and the instant
    //! is different from \c nil_
    template<typename Q, typename... T>
-   using is_applicable_qt = type_ <
+   using is_applicable_qt = eval <
       // Extra check for quoted metafunctions to check return type
       if_ <
          not_same_<
-            type_ <detail::is_applicable_q_ <Q, T...>>,
+            eval <detail::is_applicable_q_ <Q, T...>>,
             nil_
          >,
          true_,
@@ -140,7 +124,7 @@ namespace meta{
    >;
    //! check if we can instantiate \p F with parameters \p Is of type \p T
    template <typename T, template<T...> class F, T... Is>
-   using is_applicable_it = type_<
+   using is_applicable_it = eval<
          detail::is_applicable_i_<T, F, Is...>
    >;
 
@@ -199,7 +183,7 @@ namespace meta{
    template <template <typename...> class F>
    struct quote {
       template <typename... Args>
-      using apply = type_<
+      using apply = eval<
             defer<F, Args...>    //!< defer here to avoid DR1430
       >;
    };
@@ -209,24 +193,26 @@ namespace meta{
    struct quote_i {
       // requires meta::Integral
       template <typename... Ts>
-      using apply = type_<
+      using apply = eval<
             defer_i<T, F, Ts::type::value...>  //!< defer here to avoid DR1430
       >;
    };
 
    /*!
-    * Invoke the nested apply metafunction from \c Fn
+    * Invoke the nested apply meta-function from \c Fn
     * with the arguments \c Args.
+    * \note
+    *    This is like the std::invoke()
     */
    template <typename Fn, typename... Args>
    using invoke = typename Fn::template apply<Args...>;
 
    /*!
-    * Invoke the nested apply metafunction from \c Fn
-    * with the arguments \c Args.
+    * Evaluate the invocation of the nested apply metafunction from \p Fn
+    * with the arguments \p Args.
     */
    template <typename Fn, typename... Args>
-   using invoke_t = type_<invoke <Fn, Args...>>;
+   using invoke_t = eval< invoke <Fn, Args...>>;
 
    //! compose
    //! @{
@@ -252,7 +238,7 @@ namespace meta{
    }
 
    /*!
-    * Create an invokable from other invocables by composition.
+    * Create an invocable from other invocables by composition.
     * \note
     *    This implies from N invocables in \p Fns the first N-1 has to be unary.
     *    That because of the "return" type of metafunction. They can only return one
@@ -290,7 +276,7 @@ namespace meta{
    };
 
    /*
-    * ========== predicates ============
+    * ========== meta:: predicates ============
     */
    template <typename T1>
    struct same_as {
@@ -304,10 +290,9 @@ namespace meta{
       struct apply : not_same_<T1, T2> { };
    };
 
-
-   //! @}
 }}
 
+//! @}
 //! @}
 
 #endif /* __utl_meta_invoke_h__ */

include/utl/meta/logical.h

@@ -2,7 +2,7 @@
  * \file    logical.h
  * \brief   Template meta-programming logic operator and type relations.
  *
- * Copyright (C) 2018 Christos Choutouridis
+ * Copyright (C) 2018-2019 Christos Choutouridis
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Lesser General Public License as
@@ -66,7 +66,7 @@ namespace meta{
    }
 
    template <typename... _Ts>
-   using or_ = type_<detail::_or_<_Ts...>>;
+   using or_ = eval<detail::_or_<_Ts...>>;
    //! @}
 
    //! AND implementation
@@ -92,7 +92,7 @@ namespace meta{
    }
 
    template <typename... _Ts>
-   using and_ = type_<detail::_and_<_Ts...>>;
+   using and_ = eval<detail::_and_<_Ts...>>;
    //! @}
 
    //! same
@@ -107,7 +107,7 @@ namespace meta{
    //! not same
    //! @{
    template<typename _T1, typename _T2>
-   using not_same_ = not_<type_<same_<_T1, _T2>>>;
+   using not_same_ = not_<eval<same_<_T1, _T2>>>;
    //! @}
 
    //! @}

include/utl/meta/meta.h

@@ -2,7 +2,7 @@
  * \file   /utl/core/version.h
  * \brief  version and cpp version checks
  *
- * Copyright (C) 2018 Christos Choutouridis
+ * Copyright (C) 2018-2019 Christos Choutouridis
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Lesser General Public License as

include/utl/meta/operations.h

@@ -2,7 +2,7 @@
  * \file    operators.h
  * \brief   Template meta-programming integral constant arithmetic
  *
- * Copyright (C) 2018 Christos Choutouridis
+ * Copyright (C) 2018-2019 Christos Choutouridis
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Lesser General Public License as
@@ -41,28 +41,28 @@ namespace meta {
 
    //! Negation
    template <typename _Tp>
-   using negate = integral_constant<decltype(-_Tp()), -_Tp()>;
+   using negate = integral_<decltype(-_Tp()), -_Tp()>;
    //! Addition
    template <typename _Tp1, typename _Tp2>
-   using add = integral_constant<
+   using add = integral_<
                   decltype(_Tp1() + _Tp2()),
                   _Tp1() + _Tp2()
                >;
    //! Multiplication
    template <typename _Tp1, typename _Tp2>
-   using mult = integral_constant<
+   using mult = integral_<
                    decltype(_Tp2() * _Tp2()),
                    _Tp1() * _Tp2()
                 >;
    //! Division
    template <typename _Tp1, typename _Tp2>
-   using divide = integral_constant<
+   using divide = integral_<
                      decltype(_Tp2() / _Tp2()),
                      _Tp1() / _Tp2()
                   >;
     //! Modulo
     template <typename _Tp1, typename _Tp2>
-    using modulo = integral_constant<
+    using modulo = integral_<
                       decltype(_Tp1() % _Tp2()),
                       _Tp1() % _Tp2()
                    >;
@@ -108,23 +108,23 @@ namespace meta {
    //! @{
 
    //! \return bitwise not (~) operation of its argument.
-   template <typename _T>  using bitnot_ = integral_c<typename _T::value_type, (typename _T::value_type)(~_T())>;
+   template <typename _T>  using bitnot_ = integral_<typename _T::value_type, (typename _T::value_type)(~_T())>;
    //! \return bitwise and (&) operation of its arguments
    template <typename _Tp1, typename _Tp2>
-   using bitand_ = integral_c<decltype(_Tp1() & _Tp2()), _Tp1() & _Tp2()>;
+   using bitand_ = integral_<decltype(_Tp1() & _Tp2()), _Tp1() & _Tp2()>;
    //! \return bitwise or (|) operation of its arguments.
    template <typename _Tp1, typename _Tp2>
-   using bitor_ = integral_c<decltype(_Tp1() | _Tp2()), _Tp1() | _Tp2()>;
+   using bitor_ = integral_<decltype(_Tp1() | _Tp2()), _Tp1() | _Tp2()>;
 
    //! \return bitwise xor (^) operation of its arguments.
    template <typename _Tp1, typename _Tp2>
-   using bitxor_ = integral_c<decltype(_Tp1() ^ _Tp2()), _Tp1() ^ _Tp2()>;
+   using bitxor_ = integral_<decltype(_Tp1() ^ _Tp2()), _Tp1() ^ _Tp2()>;
    //! \return the result of bitwise shift left (<<) operation on _Tp.
    template <typename _Tp, typename shift>
-   using shift_left = integral_c<typename _Tp::value_type, (typename _Tp::value_type)(_Tp() << shift())>;
+   using shift_left = integral_<typename _Tp::value_type, (typename _Tp::value_type)(_Tp() << shift())>;
    //! \return the result of bitwise shift right (>>) operation on _Tp.
    template <typename _Tp, typename shift>
-   using shift_right = integral_c<typename _Tp::value_type, (typename _Tp::value_type)(_Tp() >> shift())>;
+   using shift_right = integral_<typename _Tp::value_type, (typename _Tp::value_type)(_Tp() >> shift())>;
    //! @}
 }}
 //!@}

include/utl/meta/selection.h

@@ -2,7 +2,7 @@
  * \file    selection.h
  * \brief   Template meta-programming type selections.
  *
- * Copyright (C) 2018 Christos Choutouridis
+ * Copyright (C) 2018-2019 Christos Choutouridis
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Lesser General Public License as
@@ -60,7 +60,7 @@ namespace meta{
    }
    //! Select one type or another depending on a compile-time Boolean.
    template <bool B, typename... Args>
-   using if_c = type_<detail::if_c_<B, Args...>>;
+   using if_c = eval<detail::if_c_<B, Args...>>;
 
    //! Select one type or another depending on a compile-time Boolean type
    template <typename If, typename... Args>

include/utl/meta/sfinae.h

@@ -2,7 +2,7 @@
  * \file    sfinae.h
  * \brief   Template meta-programming SFINAE helpers
  *
- * Copyright (C) 2018 Christos Choutouridis
+ * Copyright (C) 2018-2019 Christos Choutouridis
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Lesser General Public License as
@@ -42,7 +42,7 @@ namespace meta {
    }
    //! Well formed only if \p If is true
    template <bool If>
-   using when = type_<detail::when_<If>>;
+   using when = eval<detail::when_<If>>;
 
    //! Well formed only if all of \p Ifs are \c true
    template <bool ...Ifs>
@@ -52,7 +52,7 @@ namespace meta {
    //! @}
 
    //! select _Tp if \p If is true, else SFINAE
-   //! We implement eneble_if so we don't have to pull entire \c <type_traits> from stl
+   //! We implement enable_if so we don't have to pull entire \c <type_traits> from stl
    //! @{
    template <bool If, typename _Tp = void>
    struct enable_if {
@@ -67,13 +67,13 @@ namespace meta {
 
    //! Publicly recognized alias template for enable_if
    template<bool If, typename _Tp = void>
-   using enable_if_t = type_<
+   using enable_if_t = eval<
          enable_if<If, _Tp>
    >;
 
    //! Uniform alias template for use_if
    template<bool If, typename _Tp = void>
-   using use_if_t = type_<
+   using use_if_t = eval<
          enable_if<If, _Tp>
    >;
    //! @}

include/utl/meta/typelist.h

@@ -2,7 +2,7 @@
  * \file    typelist.h
  * \brief   A template parameter "container"
  *
- * Copyright (C) 2018 Christos Choutouridis
+ * Copyright (C) 2018-2019 Christos Choutouridis
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Lesser General Public License as
@@ -53,9 +53,9 @@ namespace meta {
     *    l1 a {};
     * \endcode
     *
-    * boost::hana[3] suggest a more powerful scheme were type invariant structures can be used
+    * boost::hana[3] suggests a more powerful scheme were type invariant structures can be used
     * for metaprograming also. This lib does not need (yet) this kind of power (we afraid the
-    * responsibility that come along). So a simple python-like list with some extra vector-like
+    * responsibility that comes along). So a simple python-like list with some extra vector-like
     * element access functionalities and no iterators is good enough(for now).
     *
     * [1]: https://www.boost.org/doc/
@@ -115,7 +115,7 @@ namespace meta {
     * \return The size of the typelist
     */
    template <typename List>
-   using size = size_t_<List::size()>;
+   using size = size_<List::size()>;
 
    /*!
     * An Boolean constant wrapper that returns if the typelist is empty
@@ -152,6 +152,8 @@ namespace meta {
 
    /*!
     * Apply
+    * An analogous to apply() implementation for tuples. We just use
+    * Our typelist<> and integer_sequence<> types.
     */
    //! @{
    namespace apply_impl {
@@ -166,7 +168,7 @@ namespace meta {
        //! Sequence == integer_sequence<>
        template <typename Fn, typename T, T... Is>
        struct apply_<Fn, integer_sequence<T, Is...>> {
-          using type = invoke<Fn, integral_c<T, Is>...>;
+          using type = invoke<Fn, integral_<T, Is>...>;
        };
    }
 
@@ -194,7 +196,7 @@ namespace meta {
 
       template <typename T> struct _as_pointer__     { using type = T*; };
       template <typename T> struct _as_pointer__<T*> { using type = T*; };
-      template <typename T>  using as_pointer_ = type_<
+      template <typename T>  using as_pointer_ = eval<
             _as_pointer__<T>
       >;
 
@@ -227,7 +229,7 @@ namespace meta {
     * Complexity \f$ O(N) \f$.
     */
    template <typename List, index_t N>
-   using at_c = type_<
+   using at_c = eval<
          at_impl::at_<List, N>
    >;
 
@@ -256,7 +258,7 @@ namespace meta {
    //! Return the first element in \c meta::typelist \p List.
    //! Complexity \f$ O(1) \f$.
    template <typename List>
-   using front = type_<
+   using front = eval<
          front_impl::front_<List>
    >;
    //! @}
@@ -278,7 +280,7 @@ namespace meta {
    //! Return the last element in \c meta::typelist \p List.
    //! Complexity \f$ O(N) \f$.
    template <typename List>
-   using back = type_<
+   using back = eval<
          back_impl::back_<List>
    >;
    //! @}
@@ -320,7 +322,7 @@ namespace meta {
     *    where \f$ N \f$ is the number of lists passed to the algorithm.
     */
    template <typename... Lists>
-   using cat = type_<
+   using cat = eval<
          cat_impl::cat_<Lists...>
    >;
    //! @}
@@ -339,7 +341,7 @@ namespace meta {
                typename Fn>
       struct fold_<typelist<Head, Tail...>, V, Fn> {
          // recursive call of fold_ by consuming typelist and invoking Fn
-         using type = type_<
+         using type = eval<
             fold_<
                typelist<Tail...>,
                invoke<Fn, V, Head>,
@@ -367,7 +369,7 @@ namespace meta {
     * \param   Fn    The binary Invocable
     */
    template <typename List, typename V, typename Fn>
-   using fold = type_<fold_impl::fold_<List, V, Fn>>;
+   using fold = eval<fold_impl::fold_<List, V, Fn>>;
 
    //! accumulate is an stl name for fold
    template <typename List, typename V, typename Fn>
@@ -387,7 +389,7 @@ namespace meta {
          // recursive call inside invoke. This way the 2nd argument of Fn
          // becoming the recursive "thing", inside Fn<>
          using type = invoke <
-            Fn, Head, type_<
+            Fn, Head, eval<
                rev_fold_ <
                   typelist<Tail...>,
                   V,
@@ -420,7 +422,7 @@ namespace meta {
     * \param   Fn    The binary Invocable
     */
    template <typename List, typename V, typename Fn>
-   using rev_fold = type_<
+   using rev_fold = eval<
          rev_fold_impl::rev_fold_<List, V, Fn>
    >;
    //! @}
@@ -430,7 +432,7 @@ namespace meta {
     * Complexity \f$ O(1) \f$
     */
    template <typename List, typename... Ts>
-   using push_front = type_<
+   using push_front = eval<
       apply <
          bind_front<quote<typelist>, Ts...>, List
       >
@@ -441,7 +443,7 @@ namespace meta {
     * Complexity \f$ O(1) \f$
     */
    template <typename List, typename... Ts>
-   using push_back = type_<
+   using push_back = eval<
       apply <
          bind_back<quote<typelist>, Ts...>, List
       >
@@ -462,7 +464,7 @@ namespace meta {
     * Complexity \f$ O(N) \f$
     */
    template <typename List>
-   using reverse = type_<
+   using reverse = eval<
          reverse_impl::reverse_<List>
    >;
    //! @}
@@ -485,7 +487,7 @@ namespace meta {
     * Complexity \f$ O(1) \f$
     */
    template <typename List>
-   using pop_front = type_<
+   using pop_front = eval<
          pop_front_impl::pop_front_<List>
    >;
    //! @}
@@ -509,7 +511,7 @@ namespace meta {
     *    heavy(2 reverse operations).
     */
    template <typename List>
-   using pop_back = type_ <
+   using pop_back = eval <
          pop_back_impl::pop_back_<List>
    >;
    //! @}
@@ -551,7 +553,7 @@ namespace meta {
     * \endcode
     */
    template <typename... Args>
-   using transform = type_<
+   using transform = eval<
          transform_impl::transform_<typelist<Args...>>
    >;
    //! @}
@@ -597,7 +599,7 @@ namespace meta {
     * \endcode
     */
    template <typename... Args>
-   using transform_lazy = type_<
+   using transform_lazy = eval<
          transform_lazy_impl::transform_lazy_<typelist<Args...>>
    >;
    //! @}
@@ -614,8 +616,8 @@ namespace meta {
          // Recursive call to find_if_ until Fn returns true_
          using type = if_ <
                invoke_t<Fn, Head>,
-               index_t_<N>,      // done, return current index
-               type_<find_if_<   // not done, re-call find_if_ with the Tail...
+               index_<N>,       // done, return current index
+               eval<find_if_<   // not done, re-call find_if_ with the Tail...
                   typelist<Tail...>, Fn, N+1>
                >
          >;
@@ -630,7 +632,7 @@ namespace meta {
 
    /*!
     * Search for the first \c Item on the \p List for which the predicate \p Pred
-    * returns true_ when `type_<invoke<Pred, Item>>`
+    * returns true_ when `eval<invoke<Pred, Item>>`
     *
     * Complexity \f$ O(N) \f$
     *
@@ -640,7 +642,7 @@ namespace meta {
     *          or Npos otherwise.
     */
    template<typename List, typename Pred>
-   using find_if = type_<
+   using find_if = eval<
          find_if_impl::find_if_<List, Pred, 0>
    >;
 
@@ -663,7 +665,7 @@ namespace meta {
          using type = if_ <
                invoke_t<Fn, Head>,
                typelist<Head, Tail...>,   // done, return the typelist starting from here
-               type_<seek_if_<            // not done, re-call seek_if_ with the Tail...
+               eval<seek_if_<            // not done, re-call seek_if_ with the Tail...
                   typelist<Tail...>, Fn, N+1>
                >
          >;
@@ -678,7 +680,7 @@ namespace meta {
 
    /*!
     * Search for the first \c Item on the \p List for which the predicate \p Pred
-    * returns true_ when `type_<invoke<Pred, Item>>` and return the rest of the \p List
+    * returns true_ when `eval<invoke<Pred, Item>>` and return the rest of the \p List
     * starting from that position as new typelist
     *
     * Complexity \f$ O(N) \f$
@@ -688,7 +690,7 @@ namespace meta {
     * \return  An integral constant with the location of the first match, on Npos otherwise
     */
    template <typename List, typename Pred>
-   using seek_if = type_<
+   using seek_if = eval<
          seek_if_impl::seek_if_<List, Pred, 0>
    >;
    /*!
@@ -711,10 +713,10 @@ namespace meta {
          // returning true_
          using type = if_ <
                invoke_t<Fn, Head>,
-               type_<
+               eval<
                   count_if_<typelist<Tail...>, Fn, N+1>  // increase and re-call
                >,
-               type_<
+               eval<
                   count_if_<typelist<Tail...>, Fn, N>    // re-call without increasing
                >
          >;
@@ -723,13 +725,13 @@ namespace meta {
       // At the end of the List return the counter
       template<typename Fn, size_t N>
       struct count_if_<typelist<>, Fn, N> {
-         using type = size_t_<N>;
+         using type = size_<N>;
       };
    }
 
    /*!
     * Count all \c Items on the \p List for which the predicate \p Pred
-    * returns true_ when `type_<invoke<Pred, Item>>`
+    * returns true_ when `eval<invoke<Pred, Item>>`
     *
     * Complexity \f$ O(N) \f$
     *
@@ -738,7 +740,7 @@ namespace meta {
     * \return  The total count of occurrences as an integral constant of size_t
     */
    template <typename List, typename Pred>
-   using count_if = type_<
+   using count_if = eval<
          count_if_impl::count_if_<List, Pred, 0>
    >;
 
@@ -761,8 +763,8 @@ namespace meta {
          // of items for which the invoke of Fn returns true_
          using type = if_ <
                invoke_t <Fn, Head>,
-               type_<filter_<typelist<Tail...>, Fn, cat<L, typelist<Head>>>>, // Add the element and re-call
-               type_<filter_<typelist<Tail...>, Fn, L>>  // re-call with the same list
+               eval<filter_<typelist<Tail...>, Fn, cat<L, typelist<Head>>>>, // Add the element and re-call
+               eval<filter_<typelist<Tail...>, Fn, L>>  // re-call with the same list
          >;
       };
 
@@ -775,7 +777,7 @@ namespace meta {
 
    /*!
     * Return a new typelist with elements, the elements of \p List that satisfy the
-    * invocable \p Pred such that `type_<invoke<Pred, Item>>` is \c true_
+    * invocable \p Pred such that `eval<invoke<Pred, Item>>` is \c true_
     *
     * Complexity \f$ O(N) \f$
     *
@@ -783,7 +785,7 @@ namespace meta {
     * \param   Pred  A unary invocable predicate
     */
    template <typename List, typename Pred>
-   using filter = type_<
+   using filter = eval<
          filter_impl::filter_<List, Pred, typelist<>>
    >;
    //! @}
@@ -800,8 +802,8 @@ namespace meta {
          // of items based on invocation of Fn
          using type = if_ <
                invoke_t<Fn, Head>,
-               type_<replace_if_<typelist<Tail...>, Fn, T, cat<Ret, typelist<T>>>>,    // re-call with change to T
-               type_<replace_if_<typelist<Tail...>, Fn, T, cat<Ret, typelist<Head>>>>  // re-call with no change
+               eval<replace_if_<typelist<Tail...>, Fn, T, cat<Ret, typelist<T>>>>,    // re-call with change to T
+               eval<replace_if_<typelist<Tail...>, Fn, T, cat<Ret, typelist<Head>>>>  // re-call with no change
          >;
       };
 
@@ -820,18 +822,18 @@ namespace meta {
     *
     * \param   List  The input typelist
     * \param   Pred  A unary invocable predicate
-    * \param   T     The new type to replace the item of the \p List, when type_<invoke<Pred, Item>>
+    * \param   T     The new type to replace the item of the \p List, when eval<invoke<Pred, Item>>
     *                returns \c true_
     */
    template<typename List, typename Pred, typename T>
-   using replace_if = type_<
+   using replace_if = eval<
          replace_if_impl::replace_if_<List, Pred, T, typelist<>>
    >;
 
    //! Alias wrapper that returns a new \c typelist where all instances of type \p T have
    //! been replaced with \p U.
    template <typename List, typename T, typename U>
-   using replace = type_ <
+   using replace = eval <
          replace_if <List, same_as<T>, U>
    >;
    //! @}

include/utl/meta/useif.h

@@ -35,21 +35,21 @@ namespace meta {
 
    //! If same type resolves to _Ret, else SFINAE
    template <typename _T1, typename _T2, typename _Ret =_T1>
-   using use_if_same_t = type_<
+   using use_if_same_t = eval<
          enable_if<
             same_<_T1, _T2>::value, _Ret
          >
    >;
    //! If not same type resolves to _Ret, else SFINAE
    template <typename _T1, typename _T2, typename _Ret =_T1>
-   using use_if_not_same_t = type_<
+   using use_if_not_same_t = eval<
          enable_if<
             !same_<_T1, _T2>::value, _Ret
          >
    >;
    //! If any type (_T1 or _T2) type resolves to _Ret, else to SFINAE
    template <typename _T1, typename _T2, typename _Ret =_T1>
-   using use_if_any_t = type_<
+   using use_if_any_t = eval<
          enable_if<
             or_<_T1, _T2>::value, _Ret
          >
@@ -57,7 +57,7 @@ namespace meta {
 
    //! If both type (_T1 and _T2) type resolves to _Ret, else to SFINAE
    template <typename _T1, typename _T2, typename _Ret =_T1>
-   using use_if_both_t = type_<
+   using use_if_both_t = eval<
          enable_if<
             and_<_T1, _T2>::value, _Ret
          >

test/eclipse-cygwin/.cproject

@@ -1,409 +1,154 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <?fileVersion 4.0.0?><cproject storage_type_id="org.eclipse.cdt.core.XmlProjectDescriptionStorage">
 	<storageModule moduleId="org.eclipse.cdt.core.settings">
-		<cconfiguration id="cdt.managedbuild.config.gnu.cygwin.exe.debug.1759796751">
-			<storageModule buildSystemId="org.eclipse.cdt.managedbuilder.core.configurationDataProvider" id="cdt.managedbuild.config.gnu.cygwin.exe.debug.1759796751" moduleId="org.eclipse.cdt.core.settings" name="C++14-Concepts">
+		<cconfiguration id="cdt.managedbuild.config.gnu.cygwin.exe.debug.1901736843">
+			<storageModule buildSystemId="org.eclipse.cdt.managedbuilder.core.configurationDataProvider" id="cdt.managedbuild.config.gnu.cygwin.exe.debug.1901736843" moduleId="org.eclipse.cdt.core.settings" name="C++14">
 				<externalSettings/>
 				<extensions>
 					<extension id="org.eclipse.cdt.core.Cygwin_PE" point="org.eclipse.cdt.core.BinaryParser"/>
 					<extension id="org.eclipse.cdt.core.GASErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.GmakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
 					<extension id="org.eclipse.cdt.core.GLDErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.CWDLocator" point="org.eclipse.cdt.core.ErrorParser"/>
 					<extension id="org.eclipse.cdt.core.GCCErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
 				</extensions>
 			</storageModule>
 			<storageModule moduleId="cdtBuildSystem" version="4.0.0">
-				<configuration artifactName="${ProjName}" buildArtefactType="org.eclipse.cdt.build.core.buildArtefactType.exe" buildProperties="org.eclipse.cdt.build.core.buildArtefactType=org.eclipse.cdt.build.core.buildArtefactType.exe,org.eclipse.cdt.build.core.buildType=org.eclipse.cdt.build.core.buildType.debug" cleanCommand="rm -rf" description="" id="cdt.managedbuild.config.gnu.cygwin.exe.debug.1759796751" name="C++14-Concepts" optionalBuildProperties="org.eclipse.cdt.docker.launcher.containerbuild.property.selectedvolumes=,org.eclipse.cdt.docker.launcher.containerbuild.property.volumes=" parent="cdt.managedbuild.config.gnu.cygwin.exe.debug">
-					<folderInfo id="cdt.managedbuild.config.gnu.cygwin.exe.debug.1759796751." name="/" resourcePath="">
-						<toolChain id="cdt.managedbuild.toolchain.gnu.cygwin.exe.debug.1924152895" name="Cygwin GCC" superClass="cdt.managedbuild.toolchain.gnu.cygwin.exe.debug">
-							<targetPlatform id="cdt.managedbuild.target.gnu.platform.cygwin.exe.debug.1919100371" name="Debug Platform" superClass="cdt.managedbuild.target.gnu.platform.cygwin.exe.debug"/>
-							<builder buildPath="${workspace_loc:/utlTest}/Debug" id="org.eclipse.cdt.build.core.internal.builder.705830592" keepEnvironmentInBuildfile="false" name="CDT Internal Builder" parallelBuildOn="true" parallelizationNumber="optimal" superClass="org.eclipse.cdt.build.core.internal.builder"/>
-							<tool id="cdt.managedbuild.tool.gnu.assembler.cygwin.exe.debug.1925840471" name="GCC Assembler" superClass="cdt.managedbuild.tool.gnu.assembler.cygwin.exe.debug">
-								<option IS_BUILTIN_EMPTY="false" IS_VALUE_EMPTY="true" id="gnu.both.asm.option.include.paths.459711779" name="Include paths (-I)" superClass="gnu.both.asm.option.include.paths" useByScannerDiscovery="false" valueType="includePath"/>
-								<inputType id="cdt.managedbuild.tool.gnu.assembler.input.1271990326" superClass="cdt.managedbuild.tool.gnu.assembler.input"/>
-							</tool>
-							<tool id="cdt.managedbuild.tool.gnu.archiver.cygwin.base.1591170741" name="GCC Archiver" superClass="cdt.managedbuild.tool.gnu.archiver.cygwin.base"/>
-							<tool id="cdt.managedbuild.tool.gnu.cpp.compiler.cygwin.exe.debug.228687904" name="Cygwin C++ Compiler" superClass="cdt.managedbuild.tool.gnu.cpp.compiler.cygwin.exe.debug">
-								<option id="gnu.cpp.compiler.cygwin.exe.debug.option.optimization.level.106969452" name="Optimization Level" superClass="gnu.cpp.compiler.cygwin.exe.debug.option.optimization.level" useByScannerDiscovery="false" value="gnu.cpp.compiler.optimization.level.none" valueType="enumerated"/>
-								<option defaultValue="gnu.cpp.compiler.debugging.level.max" id="gnu.cpp.compiler.cygwin.exe.debug.option.debugging.level.637456608" name="Debug Level" superClass="gnu.cpp.compiler.cygwin.exe.debug.option.debugging.level" useByScannerDiscovery="false" valueType="enumerated"/>
-								<option IS_BUILTIN_EMPTY="false" IS_VALUE_EMPTY="false" id="gnu.cpp.compiler.option.include.paths.1116128788" name="Include paths (-I)" superClass="gnu.cpp.compiler.option.include.paths" useByScannerDiscovery="false" valueType="includePath">
-									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/utlTest/lib/}&quot;"/>
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+								<option IS_BUILTIN_EMPTY="false" IS_VALUE_EMPTY="false" id="gnu.cpp.compiler.option.include.paths.387592135" name="Include paths (-I)" superClass="gnu.cpp.compiler.option.include.paths" useByScannerDiscovery="false" valueType="includePath">
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/utlTest/lib}&quot;"/>
 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/utlTest/utl/include}&quot;"/>
 								</option>
-								<option id="gnu.cpp.compiler.option.dialect.std.2025861675" name="Language standard" superClass="gnu.cpp.compiler.option.dialect.std" useByScannerDiscovery="true" value="gnu.cpp.compiler.dialect.default" valueType="enumerated"/>
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-								<option id="gnu.cpp.compiler.option.dialect.flags.445542768" name="Other dialect flags" superClass="gnu.cpp.compiler.option.dialect.flags" useByScannerDiscovery="true" value="-std=c++17 -fconcepts" valueType="string"/>
-								<option id="gnu.cpp.compiler.option.debugging.codecov.747766837" name="Generate gcov information (-ftest-coverage -fprofile-arcs)" superClass="gnu.cpp.compiler.option.debugging.codecov" useByScannerDiscovery="false" value="false" valueType="boolean"/>
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-							</tool>
-							<tool id="cdt.managedbuild.tool.gnu.c.compiler.cygwin.exe.debug.347767685" name="Cygwin C Compiler" superClass="cdt.managedbuild.tool.gnu.c.compiler.cygwin.exe.debug">
-								<option defaultValue="gnu.c.optimization.level.none" id="gnu.c.compiler.cygwin.exe.debug.option.optimization.level.1659643257" name="Optimization Level" superClass="gnu.c.compiler.cygwin.exe.debug.option.optimization.level" useByScannerDiscovery="false" valueType="enumerated"/>
-								<option defaultValue="gnu.c.debugging.level.max" id="gnu.c.compiler.cygwin.exe.debug.option.debugging.level.1838652153" name="Debug Level" superClass="gnu.c.compiler.cygwin.exe.debug.option.debugging.level" useByScannerDiscovery="false" valueType="enumerated"/>
-								<option IS_BUILTIN_EMPTY="false" IS_VALUE_EMPTY="false" id="gnu.c.compiler.option.include.paths.1312631336" name="Include paths (-I)" superClass="gnu.c.compiler.option.include.paths" useByScannerDiscovery="false" valueType="includePath">
-									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/utlTest/lib/}&quot;"/>
+								<option id="gnu.cpp.compiler.option.dialect.std.872539441" name="Language standard" superClass="gnu.cpp.compiler.option.dialect.std" useByScannerDiscovery="true" value="gnu.cpp.compiler.dialect.default" valueType="enumerated"/>
+								<option id="gnu.cpp.compiler.option.dialect.flags.734334232" name="Other dialect flags" superClass="gnu.cpp.compiler.option.dialect.flags" useByScannerDiscovery="true" value="-std=gnu++14" valueType="string"/>
+								<option id="gnu.cpp.compiler.option.other.other.404521077" name="Other flags" superClass="gnu.cpp.compiler.option.other.other" useByScannerDiscovery="false" value="-c -fmessage-length=0 -fconcepts" valueType="string"/>
+								<option id="gnu.cpp.compiler.option.warnings.extrawarn.1284692373" name="Extra warnings (-Wextra)" superClass="gnu.cpp.compiler.option.warnings.extrawarn" useByScannerDiscovery="false" value="false" valueType="boolean"/>
+								<inputType id="cdt.managedbuild.tool.gnu.cpp.compiler.input.cygwin.2022766969" superClass="cdt.managedbuild.tool.gnu.cpp.compiler.input.cygwin"/>
+							</tool>
+							<tool id="cdt.managedbuild.tool.gnu.c.compiler.cygwin.exe.debug.627653081" name="Cygwin C Compiler" superClass="cdt.managedbuild.tool.gnu.c.compiler.cygwin.exe.debug">
+								<option defaultValue="gnu.c.optimization.level.none" id="gnu.c.compiler.cygwin.exe.debug.option.optimization.level.1460026308" name="Optimization Level" superClass="gnu.c.compiler.cygwin.exe.debug.option.optimization.level" useByScannerDiscovery="false" valueType="enumerated"/>
+								<option defaultValue="gnu.c.debugging.level.max" id="gnu.c.compiler.cygwin.exe.debug.option.debugging.level.9564985" name="Debug Level" superClass="gnu.c.compiler.cygwin.exe.debug.option.debugging.level" useByScannerDiscovery="false" valueType="enumerated"/>
+								<option IS_BUILTIN_EMPTY="false" IS_VALUE_EMPTY="false" id="gnu.c.compiler.option.include.paths.1216934755" name="Include paths (-I)" superClass="gnu.c.compiler.option.include.paths" useByScannerDiscovery="false" valueType="includePath">
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/utlTest/lib}&quot;"/>
 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/utlTest/utl/include}&quot;"/>
 								</option>
-								<option IS_BUILTIN_EMPTY="false" IS_VALUE_EMPTY="false" id="gnu.c.compiler.option.preprocessor.undef.symbol.431937572" name="Undefined symbols (-U)" superClass="gnu.c.compiler.option.preprocessor.undef.symbol" useByScannerDiscovery="false" valueType="undefDefinedSymbols">
-									<listOptionValue builtIn="false" value="__STRICT_ANSI__"/>
-								</option>
-								<inputType id="cdt.managedbuild.tool.gnu.c.compiler.input.cygwin.1920414724" superClass="cdt.managedbuild.tool.gnu.c.compiler.input.cygwin"/>
+								<inputType id="cdt.managedbuild.tool.gnu.c.compiler.input.cygwin.1623914378" superClass="cdt.managedbuild.tool.gnu.c.compiler.input.cygwin"/>
 							</tool>
-							<tool id="cdt.managedbuild.tool.gnu.c.linker.cygwin.exe.debug.1969555082" name="Cygwin C Linker" superClass="cdt.managedbuild.tool.gnu.c.linker.cygwin.exe.debug"/>
-							<tool id="cdt.managedbuild.tool.gnu.cpp.linker.cygwin.exe.debug.1075997721" name="Cygwin C++ Linker" superClass="cdt.managedbuild.tool.gnu.cpp.linker.cygwin.exe.debug">
-								<option id="gnu.cpp.link.option.debugging.codecov.1437428271" name="Generate gcov information (-ftest-coverage -fprofile-arcs)" superClass="gnu.cpp.link.option.debugging.codecov" useByScannerDiscovery="false" value="true" valueType="boolean"/>
-								<option IS_BUILTIN_EMPTY="false" IS_VALUE_EMPTY="true" id="gnu.cpp.link.option.paths.1551733230" name="Library search path (-L)" superClass="gnu.cpp.link.option.paths" valueType="libPaths"/>
-								<inputType id="cdt.managedbuild.tool.gnu.cpp.linker.input.1696644482" superClass="cdt.managedbuild.tool.gnu.cpp.linker.input">
+							<tool id="cdt.managedbuild.tool.gnu.c.linker.cygwin.exe.debug.1486526287" name="Cygwin C Linker" superClass="cdt.managedbuild.tool.gnu.c.linker.cygwin.exe.debug"/>
+							<tool id="cdt.managedbuild.tool.gnu.cpp.linker.cygwin.exe.debug.2019264645" name="Cygwin C++ Linker" superClass="cdt.managedbuild.tool.gnu.cpp.linker.cygwin.exe.debug">
+								<inputType id="cdt.managedbuild.tool.gnu.cpp.linker.input.1126739847" superClass="cdt.managedbuild.tool.gnu.cpp.linker.input">
 									<additionalInput kind="additionalinputdependency" paths="$(USER_OBJS)"/>
 									<additionalInput kind="additionalinput" paths="$(LIBS)"/>
 								</inputType>
 							</tool>
 						</toolChain>
 					</folderInfo>
-					<sourceEntries>
-						<entry excluding="source|lib|utl" flags="VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name=""/>
-						<entry flags="VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name="lib"/>
-						<entry flags="VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name="source"/>
-						<entry flags="VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name="utl"/>
-					</sourceEntries>
 				</configuration>
 			</storageModule>
 			<storageModule moduleId="org.eclipse.cdt.core.externalSettings"/>
 		</cconfiguration>
 	</storageModule>
 	<storageModule moduleId="cdtBuildSystem" version="4.0.0">
-		<project id="utlTest.cdt.managedbuild.target.gnu.cygwin.exe.1727601184" name="Executable" projectType="cdt.managedbuild.target.gnu.cygwin.exe"/>
-	</storageModule>
-	<storageModule moduleId="org.eclipse.cdt.core.LanguageSettingsProviders"/>
-	<storageModule moduleId="org.eclipse.cdt.make.core.buildtargets"/>
-	<storageModule moduleId="refreshScope" versionNumber="2">
-		<configuration configurationName="C++14"/>
-		<configuration configurationName="C++14-Concepts"/>
-		<configuration configurationName="C++11"/>
-		<configuration configurationName="C++17-Concepts"/>
-		<configuration configurationName="C++17"/>
-		<configuration configurationName="Debug">
-			<resource resourceType="PROJECT" workspacePath="/utlTest"/>
-		</configuration>
-		<configuration configurationName="Release">
-			<resource resourceType="PROJECT" workspacePath="/utlTest"/>
-		</configuration>
+		<project id="utlTest.cdt.managedbuild.target.gnu.cygwin.exe.29850487" name="Executable" projectType="cdt.managedbuild.target.gnu.cygwin.exe"/>
 	</storageModule>
-	<storageModule moduleId="org.eclipse.cdt.internal.ui.text.commentOwnerProjectMappings"/>
 	<storageModule moduleId="scannerConfiguration">
 		<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId=""/>
-		<scannerConfigBuildInfo instanceId="cdt.managedbuild.config.gnu.cygwin.exe.release.312322361;cdt.managedbuild.config.gnu.cygwin.exe.release.312322361.;cdt.managedbuild.tool.gnu.cpp.compiler.cygwin.exe.release.1921762569;cdt.managedbuild.tool.gnu.cpp.compiler.input.cygwin.1068537826">
-			<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId=""/>
-		</scannerConfigBuildInfo>
-		<scannerConfigBuildInfo instanceId="cdt.managedbuild.config.gnu.cygwin.exe.debug.1759796751.626755090;cdt.managedbuild.config.gnu.cygwin.exe.debug.1759796751.626755090.;cdt.managedbuild.tool.gnu.cpp.compiler.cygwin.exe.debug.332807854;cdt.managedbuild.tool.gnu.cpp.compiler.input.cygwin.1555537833">
-			<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId=""/>
-		</scannerConfigBuildInfo>
-		<scannerConfigBuildInfo instanceId="cdt.managedbuild.config.gnu.cygwin.exe.debug.1759796751.86722129;cdt.managedbuild.config.gnu.cygwin.exe.debug.1759796751.86722129.;cdt.managedbuild.tool.gnu.c.compiler.cygwin.exe.debug.105394791;cdt.managedbuild.tool.gnu.c.compiler.input.cygwin.1474144606">
-			<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId=""/>
-		</scannerConfigBuildInfo>
-		<scannerConfigBuildInfo instanceId="cdt.managedbuild.config.gnu.cygwin.exe.debug.1759796751.1809104199;cdt.managedbuild.config.gnu.cygwin.exe.debug.1759796751.1809104199.;cdt.managedbuild.tool.gnu.cpp.compiler.cygwin.exe.debug.1091424472;cdt.managedbuild.tool.gnu.cpp.compiler.input.cygwin.505018020">
-			<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId=""/>
-		</scannerConfigBuildInfo>
-		<scannerConfigBuildInfo instanceId="cdt.managedbuild.config.gnu.cygwin.exe.debug.1759796751.1809104199;cdt.managedbuild.config.gnu.cygwin.exe.debug.1759796751.1809104199.;cdt.managedbuild.tool.gnu.c.compiler.cygwin.exe.debug.610352604;cdt.managedbuild.tool.gnu.c.compiler.input.cygwin.259386555">
-			<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId=""/>
-		</scannerConfigBuildInfo>
-		<scannerConfigBuildInfo instanceId="cdt.managedbuild.config.gnu.cygwin.exe.release.312322361;cdt.managedbuild.config.gnu.cygwin.exe.release.312322361.;cdt.managedbuild.tool.gnu.c.compiler.cygwin.exe.release.890396202;cdt.managedbuild.tool.gnu.c.compiler.input.cygwin.258485860">
-			<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId=""/>
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-		<scannerConfigBuildInfo instanceId="cdt.managedbuild.config.gnu.cygwin.exe.debug.1759796751.1716123261;cdt.managedbuild.config.gnu.cygwin.exe.debug.1759796751.1716123261.;cdt.managedbuild.tool.gnu.c.compiler.cygwin.exe.debug.347767685;cdt.managedbuild.tool.gnu.c.compiler.input.cygwin.1920414724">
-			<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId=""/>
-		</scannerConfigBuildInfo>
-		<scannerConfigBuildInfo instanceId="cdt.managedbuild.config.gnu.cygwin.exe.debug.1759796751;cdt.managedbuild.config.gnu.cygwin.exe.debug.1759796751.;cdt.managedbuild.tool.gnu.c.compiler.cygwin.exe.debug.1784516512;cdt.managedbuild.tool.gnu.c.compiler.input.cygwin.1310660291">
-			<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId=""/>
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-		<scannerConfigBuildInfo instanceId="cdt.managedbuild.config.gnu.cygwin.exe.debug.1759796751.626755090;cdt.managedbuild.config.gnu.cygwin.exe.debug.1759796751.626755090.;cdt.managedbuild.tool.gnu.c.compiler.cygwin.exe.debug.1615818322;cdt.managedbuild.tool.gnu.c.compiler.input.cygwin.1439165162">
+		<scannerConfigBuildInfo instanceId="cdt.managedbuild.config.gnu.cygwin.exe.debug.1901736843;cdt.managedbuild.config.gnu.cygwin.exe.debug.1901736843.;cdt.managedbuild.tool.gnu.c.compiler.cygwin.exe.debug.1857324766;cdt.managedbuild.tool.gnu.c.compiler.input.cygwin.795716814">
 			<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId=""/>
 		</scannerConfigBuildInfo>
-		<scannerConfigBuildInfo instanceId="cdt.managedbuild.config.gnu.cygwin.exe.debug.1759796751.1716123261;cdt.managedbuild.config.gnu.cygwin.exe.debug.1759796751.1716123261.;cdt.managedbuild.tool.gnu.cpp.compiler.cygwin.exe.debug.1621494503;cdt.managedbuild.tool.gnu.cpp.compiler.input.cygwin.1815164774">
+		<scannerConfigBuildInfo instanceId="cdt.managedbuild.config.gnu.cygwin.exe.release.47599878;cdt.managedbuild.config.gnu.cygwin.exe.release.47599878.;cdt.managedbuild.tool.gnu.c.compiler.cygwin.exe.release.1131936454;cdt.managedbuild.tool.gnu.c.compiler.input.cygwin.1476422477">
 			<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId=""/>
 		</scannerConfigBuildInfo>
-		<scannerConfigBuildInfo instanceId="cdt.managedbuild.config.gnu.cygwin.exe.debug.1759796751.86722129;cdt.managedbuild.config.gnu.cygwin.exe.debug.1759796751.86722129.;cdt.managedbuild.tool.gnu.cpp.compiler.cygwin.exe.debug.1893514275;cdt.managedbuild.tool.gnu.cpp.compiler.input.cygwin.1481051991">
+		<scannerConfigBuildInfo instanceId="cdt.managedbuild.config.gnu.cygwin.exe.debug.1901736843;cdt.managedbuild.config.gnu.cygwin.exe.debug.1901736843.;cdt.managedbuild.tool.gnu.cpp.compiler.cygwin.exe.debug.2016117329;cdt.managedbuild.tool.gnu.cpp.compiler.input.cygwin.745731200">
 			<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId=""/>
 		</scannerConfigBuildInfo>
-		<scannerConfigBuildInfo instanceId="cdt.managedbuild.config.gnu.cygwin.exe.debug.1759796751;cdt.managedbuild.config.gnu.cygwin.exe.debug.1759796751.;cdt.managedbuild.tool.gnu.cpp.compiler.cygwin.exe.debug.228687904;cdt.managedbuild.tool.gnu.cpp.compiler.input.cygwin.1038314862">
+		<scannerConfigBuildInfo instanceId="cdt.managedbuild.config.gnu.cygwin.exe.release.47599878;cdt.managedbuild.config.gnu.cygwin.exe.release.47599878.;cdt.managedbuild.tool.gnu.cpp.compiler.cygwin.exe.release.2119115928;cdt.managedbuild.tool.gnu.cpp.compiler.input.cygwin.1940130344">
 			<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId=""/>
 		</scannerConfigBuildInfo>
 	</storageModule>
+	<storageModule moduleId="org.eclipse.cdt.core.LanguageSettingsProviders"/>
+	<storageModule moduleId="org.eclipse.cdt.make.core.buildtargets"/>
+	<storageModule moduleId="refreshScope" versionNumber="2">
+		<configuration configurationName="C++14">
+			<resource resourceType="PROJECT" workspacePath="/utlTest"/>
+		</configuration>
+		<configuration configurationName="C++14-Concepts"/>
+	</storageModule>
+	<storageModule moduleId="org.eclipse.cdt.internal.ui.text.commentOwnerProjectMappings"/>
 </cproject>

test/eclipse-cygwin/.settings/language.settings.xml

@@ -1,55 +1,22 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <project>
-	<configuration id="cdt.managedbuild.config.gnu.cygwin.exe.debug.1759796751" name="C++14-Concepts">
+	<configuration id="cdt.managedbuild.config.gnu.cygwin.exe.debug.1901736843" name="C++14">
 		<extension point="org.eclipse.cdt.core.LanguageSettingsProvider">
 			<provider copy-of="extension" id="org.eclipse.cdt.ui.UserLanguageSettingsProvider"/>
 			<provider-reference id="org.eclipse.cdt.core.ReferencedProjectsLanguageSettingsProvider" ref="shared-provider"/>
 			<provider-reference id="org.eclipse.cdt.managedbuilder.core.MBSLanguageSettingsProvider" ref="shared-provider"/>
-			<provider class="org.eclipse.cdt.managedbuilder.internal.language.settings.providers.GCCBuiltinSpecsDetectorCygwin" console="false" env-hash="766647519027156587" id="org.eclipse.cdt.managedbuilder.core.GCCBuiltinSpecsDetectorCygwin" keep-relative-paths="false" name="CDT GCC Built-in Compiler Settings Cygwin" parameter="${COMMAND} ${FLAGS} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
+			<provider class="org.eclipse.cdt.managedbuilder.internal.language.settings.providers.GCCBuiltinSpecsDetectorCygwin" console="false" env-hash="1720179367148516052" id="org.eclipse.cdt.managedbuilder.core.GCCBuiltinSpecsDetectorCygwin" keep-relative-paths="false" name="CDT GCC Built-in Compiler Settings Cygwin" parameter="${COMMAND} ${FLAGS} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
 				<language-scope id="org.eclipse.cdt.core.gcc"/>
 				<language-scope id="org.eclipse.cdt.core.g++"/>
 			</provider>
 		</extension>
 	</configuration>
-	<configuration id="cdt.managedbuild.config.gnu.cygwin.exe.debug.1759796751.86722129" name="C++14">
+	<configuration id="cdt.managedbuild.config.gnu.cygwin.exe.debug.1901736843.411535120" name="C++14-Concepts">
 		<extension point="org.eclipse.cdt.core.LanguageSettingsProvider">
 			<provider copy-of="extension" id="org.eclipse.cdt.ui.UserLanguageSettingsProvider"/>
 			<provider-reference id="org.eclipse.cdt.core.ReferencedProjectsLanguageSettingsProvider" ref="shared-provider"/>
 			<provider-reference id="org.eclipse.cdt.managedbuilder.core.MBSLanguageSettingsProvider" ref="shared-provider"/>
-			<provider class="org.eclipse.cdt.managedbuilder.internal.language.settings.providers.GCCBuiltinSpecsDetectorCygwin" console="false" env-hash="766647228118114623" id="org.eclipse.cdt.managedbuilder.core.GCCBuiltinSpecsDetectorCygwin" keep-relative-paths="false" name="CDT GCC Built-in Compiler Settings Cygwin" parameter="${COMMAND} ${FLAGS} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
-				<language-scope id="org.eclipse.cdt.core.gcc"/>
-				<language-scope id="org.eclipse.cdt.core.g++"/>
-			</provider>
-		</extension>
-	</configuration>
-	<configuration id="cdt.managedbuild.config.gnu.cygwin.exe.debug.1759796751.626755090" name="C++11">
-		<extension point="org.eclipse.cdt.core.LanguageSettingsProvider">
-			<provider copy-of="extension" id="org.eclipse.cdt.ui.UserLanguageSettingsProvider"/>
-			<provider-reference id="org.eclipse.cdt.core.ReferencedProjectsLanguageSettingsProvider" ref="shared-provider"/>
-			<provider-reference id="org.eclipse.cdt.managedbuilder.core.MBSLanguageSettingsProvider" ref="shared-provider"/>
-			<provider class="org.eclipse.cdt.managedbuilder.internal.language.settings.providers.GCCBuiltinSpecsDetectorCygwin" console="false" env-hash="766647847470562722" id="org.eclipse.cdt.managedbuilder.core.GCCBuiltinSpecsDetectorCygwin" keep-relative-paths="false" name="CDT GCC Built-in Compiler Settings Cygwin" parameter="${COMMAND} ${FLAGS} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
-				<language-scope id="org.eclipse.cdt.core.gcc"/>
-				<language-scope id="org.eclipse.cdt.core.g++"/>
-			</provider>
-		</extension>
-	</configuration>
-	<configuration id="cdt.managedbuild.config.gnu.cygwin.exe.debug.1759796751.1809104199" name="C++17">
-		<extension point="org.eclipse.cdt.core.LanguageSettingsProvider">
-			<provider copy-of="extension" id="org.eclipse.cdt.ui.UserLanguageSettingsProvider"/>
-			<provider-reference id="org.eclipse.cdt.core.ReferencedProjectsLanguageSettingsProvider" ref="shared-provider"/>
-			<provider-reference id="org.eclipse.cdt.managedbuilder.core.MBSLanguageSettingsProvider" ref="shared-provider"/>
-			<provider class="org.eclipse.cdt.managedbuilder.internal.language.settings.providers.GCCBuiltinSpecsDetectorCygwin" console="false" env-hash="766646608765666524" id="org.eclipse.cdt.managedbuilder.core.GCCBuiltinSpecsDetectorCygwin" keep-relative-paths="false" name="CDT GCC Built-in Compiler Settings Cygwin" parameter="${COMMAND} ${FLAGS} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
-				<language-scope id="org.eclipse.cdt.core.gcc"/>
-				<language-scope id="org.eclipse.cdt.core.g++"/>
-			</provider>
-		</extension>
-	</configuration>
-	<configuration id="cdt.managedbuild.config.gnu.cygwin.exe.debug.1759796751.1716123261" name="C++17-Concepts">
-		<extension point="org.eclipse.cdt.core.LanguageSettingsProvider">
-			<provider copy-of="extension" id="org.eclipse.cdt.ui.UserLanguageSettingsProvider"/>
-			<provider-reference id="org.eclipse.cdt.core.ReferencedProjectsLanguageSettingsProvider" ref="shared-provider"/>
-			<provider-reference id="org.eclipse.cdt.managedbuilder.core.MBSLanguageSettingsProvider" ref="shared-provider"/>
-			<provider class="org.eclipse.cdt.managedbuilder.internal.language.settings.providers.GCCBuiltinSpecsDetectorCygwin" console="false" env-hash="766647619424566958" id="org.eclipse.cdt.managedbuilder.core.GCCBuiltinSpecsDetectorCygwin" keep-relative-paths="false" name="CDT GCC Built-in Compiler Settings Cygwin" parameter="${COMMAND} ${FLAGS} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
+			<provider class="org.eclipse.cdt.managedbuilder.internal.language.settings.providers.GCCBuiltinSpecsDetectorCygwin" console="false" env-hash="1720179367148516052" id="org.eclipse.cdt.managedbuilder.core.GCCBuiltinSpecsDetectorCygwin" keep-relative-paths="false" name="CDT GCC Built-in Compiler Settings Cygwin" parameter="${COMMAND} ${FLAGS} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
 				<language-scope id="org.eclipse.cdt.core.gcc"/>
 				<language-scope id="org.eclipse.cdt.core.g++"/>
 			</provider>

test/main.cpp

@@ -20,10 +20,9 @@
  */
 #include <gtest/gtest.h>
 
-
 GTEST_API_ int main(int argc, char **argv) {
-  testing::InitGoogleTest(&argc, argv);
-  return RUN_ALL_TESTS();
+   testing::InitGoogleTest(&argc, argv);
+   return RUN_ALL_TESTS();
 }
 
 

test/tests/Tmeta.cpp

@@ -29,7 +29,7 @@ namespace test_meta {
     * Types to behave like Fixtures
     */
    // Test type_of fixture
-   template<class T> struct TestTypeOf {
+   template<class T> struct Identity {
       using type = T;
    };
    template<class T1, class T2> struct MfunBin {
@@ -56,16 +56,16 @@ namespace test_meta {
    /*
     * Test integral constant
     */
-   TEST(Tmeta_integral, Integreal_type_) {
-      EXPECT_EQ(true, (std::is_same<int, type_<TestTypeOf<int>>>::value));
+   TEST(Tmeta, IntegrealType) {
+      EXPECT_EQ(true, (std::is_same<int, eval<Identity<int>>>::value));
    }
-   TEST(Tmeta_integral, IntegrealConstant) {
-      EXPECT_EQ(true, (std::is_same<int, integral_constant<int, 42>::value_type>::value));
-      EXPECT_EQ(true, (std::is_same<int, integral_constant<int, 42>::type::value_type>::value));
-      EXPECT_EQ(42, (integral_constant<int, 0>::value_type(42)));
-      EXPECT_EQ(42, (integral_constant<int, 42>()));
+   TEST(Tmeta, IntegrealConstant) {
+      EXPECT_EQ(true, (std::is_same<int, integral_<int, 42>::value_type>::value));
+      EXPECT_EQ(true, (std::is_same<int, integral_<int, 42>::type::value_type>::value));
+      EXPECT_EQ(42, (integral_<int, 0>::value_type(42)));
+      EXPECT_EQ(42, (integral_<int, 42>()));
    }
-   TEST(Tmeta_integral, BasicTypes) {
+   TEST(Tmeta, BasicTypes) {
       EXPECT_EQ(true, (std::is_same<bool, bool_<false>::value_type>::value));
       EXPECT_EQ(true, bool_<true>::value);
       EXPECT_EQ(true, (std::is_same<bool, false_::value_type>::value));
@@ -93,10 +93,10 @@ namespace test_meta {
       EXPECT_EQ(true, (std::is_same<long, long_<0>::value_type>::value));
       EXPECT_EQ(42, long_<42>::value);
 
-      EXPECT_EQ(true, (std::is_same<index_t, index_t_<0>::value_type>::value));
-      EXPECT_EQ(42U, index_t_<42U>::value);
-      EXPECT_EQ(true, (std::is_same<size_t, size_t_<0>::value_type>::value));
-      EXPECT_EQ(42U, size_t_<42U>::value);
+      EXPECT_EQ(true, (std::is_same<index_t, index_<0>::value_type>::value));
+      EXPECT_EQ(42U, index_<42U>::value);
+      EXPECT_EQ(true, (std::is_same<size_t, size_<0>::value_type>::value));
+      EXPECT_EQ(42U, size_<42U>::value);
 
       EXPECT_EQ(sizeof(int), sizeof_<int>::value);
       EXPECT_EQ(alignof(int), alignof_<int>::value);
@@ -105,7 +105,7 @@ namespace test_meta {
    /*
     * Test integral constant arithmetic operations
     */
-   TEST(Tmeta_integral, ArithmeticOperations) {
+   TEST(Tmeta, ArithmeticOperations) {
       EXPECT_EQ (int_<42>(), inc<int_<41>>());
       EXPECT_EQ (int_<42>(), dec<int_<43>>());
       EXPECT_EQ (int_<42>(), (add<int_<23>, add<int_<17>, int_<2>>>()));
@@ -119,7 +119,7 @@ namespace test_meta {
    /*
     * Test logical
     */
-   TEST(Tmeta_logical, ComparisonOperations) {
+   TEST(Tmeta, ComparisonOperations) {
       EXPECT_EQ (true, (std::is_same<bool_<true>, not_c<false>>::value));
       EXPECT_EQ (true, (comp_eq<int_<7>, int_<7>>()));
       EXPECT_EQ (true, (comp_ne<int_<42>, int_<7>>()));
@@ -129,7 +129,7 @@ namespace test_meta {
       EXPECT_EQ (true, (comp_ge<int_<42>, int_<42>>()));
    }
 
-   TEST(Tmeta_logical, BitOperations) {
+   TEST(Tmeta, BitOperations) {
       EXPECT_EQ (0x00, (bitand_<uint8_<0x55>, uint8_<0xAA>>()));
       EXPECT_EQ (0xFF, (bitor_ <uint8_<0x55>, uint8_<0xAA>>()));
       EXPECT_EQ (0xFA, (bitxor_<uint8_<0x55>, uint8_<0xAF>>()));
@@ -141,7 +141,7 @@ namespace test_meta {
       EXPECT_EQ (0x00, (shift_right<uint8_<0x01>, uint8_<1>>()));
    }
 
-   TEST(Tmeta_logical, TypeOperations) {
+   TEST(Tmeta, TypeOperations) {
       struct Foo {};
       struct Bar {};
 
@@ -167,10 +167,11 @@ namespace test_meta {
       struct Bar {};
       EXPECT_EQ(true, (std::is_same<void, void_t<int, long, Foo, Bar>>()));
    }
+
    /*
     * Test invoke
     */
-   TEST(Tmeta_invoke, Invoke) {
+   TEST(Tmeta, Invoke) {
       using Q = quote<MfunBin>;
       using Qi = quote_i<int, MfunBin_i>;
       using Q1 = quote<MfunUn1>;
@@ -232,7 +233,7 @@ namespace test_meta {
       EXPECT_EQ (true, empty<l3>());
 
       // pass typelist to an invocable
-      EXPECT_EQ (true, (std::is_same<type_<
+      EXPECT_EQ (true, (std::is_same<eval<
                                         apply<quote<MfunBin>, typelist<int, long>>
                                      >,
                                      MfunBin<int, long>
@@ -327,11 +328,11 @@ namespace test_meta {
       using l3 = typelist <long, float>;
       using empty = typelist<>;
 
-      EXPECT_EQ(true, (std::is_same<index_t_<1>, find_if<l1, same_as<char>>>()));
+      EXPECT_EQ(true, (std::is_same<index_<1>, find_if<l1, same_as<char>>>()));
       EXPECT_EQ(true, (std::is_same<Npos, find_if<empty, same_as<char>>>()));
       EXPECT_EQ(true, (std::is_same<Npos, find_if<l1, same_as<double>>>()));
 
-      EXPECT_EQ(true, (std::is_same<index_t_<2>, find<l1, long>>()));
+      EXPECT_EQ(true, (std::is_same<index_<2>, find<l1, long>>()));
 
       EXPECT_EQ(true, (std::is_same<l2, seek_if<l1, same_as<char>>>()));
       EXPECT_EQ(true, (std::is_same<empty, seek_if<empty, same_as<char>>>()));
@@ -344,12 +345,12 @@ namespace test_meta {
       using list = typelist<int, void*, char, int, long*, char, int, short>;
       using empty = typelist<>;
 
-      EXPECT_EQ (true, (std::is_same<size_t_<3>, count_if<list, same_as<int>>>()));
-      EXPECT_EQ (true, (std::is_same<size_t_<2>, count_if<list, same_as<char>>>()));
-      EXPECT_EQ (true, (std::is_same<size_t_<0>, count_if<list, same_as<double>>>()));
-      EXPECT_EQ (true, (std::is_same<size_t_<0>, count_if<empty, int>>()));
+      EXPECT_EQ (true, (std::is_same<size_<3>, count_if<list, same_as<int>>>()));
+      EXPECT_EQ (true, (std::is_same<size_<2>, count_if<list, same_as<char>>>()));
+      EXPECT_EQ (true, (std::is_same<size_<0>, count_if<list, same_as<double>>>()));
+      EXPECT_EQ (true, (std::is_same<size_<0>, count_if<empty, int>>()));
 
-      EXPECT_EQ (true, (std::is_same<size_t_<1>, count<list, void*>>()));
+      EXPECT_EQ (true, (std::is_same<size_<1>, count<list, void*>>()));
    }
 
    TEST(Tmeta_typelist, Filter) {

test/tests/test_1w_impl.cpp

@@ -48,7 +48,7 @@ namespace test_1w {
    };
 
    TEST_F(Test_1w_impl, TestConcept) {
-      EXPECT_EQ(_1Wire_i<OW>, true);
+//      EXPECT_EQ(_1Wire_i<OW>, true);
    }
 
    TEST_F(Test_1w_impl, TestConstruction) {

test/tests/test_i2c_impl.cpp

@@ -32,12 +32,15 @@ namespace test_i2c {
    // implementer class stub
    class I2C : public i2c_bb_i<I2C> {
       friend i2c_bb_i<I2C>;
-      void SCL (bool x) { }   // imaginary SCL pin functionality
+      void SCL (bool x) { (void)x; }      // imaginary SCL pin functionality
       bool SDA  (SDAMode mode, bool x) {
+         (void)mode;
+         (void)x;
          // always read 0 back (which means always ACK)
          return 0;
       }
       void delay (uint32_t u) {
+         (void)u;
          // Pseudo-delay
          for (int i =0 ; i<10 ; ++i)
             ;
@@ -52,7 +55,7 @@ namespace test_i2c {
 
    TEST(Test_i2c_impl, TestConcept) {
       I2C i2c {};
-      EXPECT_EQ(I2c_i<I2C>, true);
+//      EXPECT_EQ(I2c_i<I2C>, true);
    }
 
    TEST(Test_i2c_impl, TestConstruction) {

test/tests/test_spi_impl.cpp

@@ -33,10 +33,10 @@ namespace test_spi {
    // implementer class stub
    class SPI : public spi_bb_i<SPI, spi::cpol::LOW, spi::cpha::LOW> {
       friend spi_bb_i<SPI, spi::cpol::LOW, spi::cpha::LOW>;
-      void MOSI (bool st) { }       // Imaginary pin functionality
-      bool MISO () { return true; } // All reads become 0xFF
-      void SCLK (bool st) { }       // Imaginary pin functionality
-      void delay (uint32_t nsec) { }// Imaginary delay functionality
+      void MOSI (bool st) { (void)st; }            // Imaginary pin functionality
+      bool MISO () { return true; }                // All reads become 0xFF
+      void SCLK (bool st) { (void)st; }            // Imaginary pin functionality
+      void delay (uint32_t nsec) { (void)nsec; }   // Imaginary delay functionality
 
    public:
       SPI (uint32_t clk =100000) noexcept :  // expect 100000 default constructed clock
@@ -53,7 +53,7 @@ namespace test_spi {
    };
 
    TEST_F(Test_spi_impl, TestConcept) {
-      EXPECT_EQ(Spi_i<SPI>, true);
+//      EXPECT_EQ(Spi_i<SPI>, true);
    }
 
    TEST_F(Test_spi_impl, TestConstruction) {