/*!
 * \file   utl/core/version.h
 * \brief  utl version and cpp version checks
 */
#ifndef __utl_core_version_h__
#define __utl_core_version_h__

//!\addtogroup core
//! @{

//! \defgroup version Version
//! Definitions of the utl version and compiler features
//!@{

//! utl version as string
#define UTL_VERSION       "0.1.0"
#define UTL_VERSION_MAJOR  0
#define UTL_VERSION_MINOR  1
#define UTL_VERSION_PATCH  0

//! utl version as integer
//!
//! This can be used in the user files to check for uTL versions.
//! The version number is constructed using:\n
//! \f$ ver = (Maj*10000 + Min*100 + Patch) \f$
#define UTL_VERSION_VALUE ( (UTL_VERSION_MAJOR * 10000) \
                          + (UTL_VERSION_MINOR * 100)   \
                          + UTL_VERSION_PATCH)

//!@}

//! \name Compiler and feature checks
//! These checks are used inside uTL, but the user is free to use the as well.
//! @{
#define CXX_VER            __cplusplus //!< Current compiler's version
#define CXX_VER_STD_11     201103L     //!< C++11
#define CXX_VER_STD_14     201402L     //!< C++14
#define CXX_VER_STD_17     201703L     //!< C++17

//! \def CXX_VARIABLE_TEMPLATES
//! Check for variable templates (Non-zero if available)
#ifndef CXX_VARIABLE_TEMPLATES
 #ifdef  __cpp_variable_templates
  #define CXX_VARIABLE_TEMPLATES __cpp_variable_templates
 #else
  #define CXX_VARIABLE_TEMPLATES (CXX_VER >= CXX_VER_STD_14)
 #endif
#endif

//! \def CXX_CONCEPTS
//! Check for concepts (Non-zero if available)
#ifndef CXX_CONCEPTS
 #ifdef __cpp_concepts
  #define CXX_CONCEPTS __cpp_concepts
 #else
  #define CXX_CONCEPTS 0
 #endif
#endif

//! \def CXX_INLINE_VARIABLES
//! Check for inline variables (Non-zero if available)
#ifndef CXX_INLINE_VARIABLES
 #ifdef __cpp_inline_variables
  #define CXX_INLINE_VARIABLES __cpp_inline_variables
 #else
  #define CXX_INLINE_VARIABLES (CXX_VER >= CXX_VER_STD_17)
 #endif
#endif

//! \def CXX_FOLD_EXPRESSIONS
//! Check for fold expressions (Non-zero if available)
#ifndef CXX_FOLD_EXPRESSIONS
 #ifdef __cpp_fold_expressions
  #define CXX_FOLD_EXPRESSIONS __cpp_fold_expressions
 #else
  #define CXX_FOLD_EXPRESSIONS (CXX_VER >= CXX_VER_STD_17)
 #endif
#endif

//! @}


//! \name Workaround inspections
//! @{

#if defined(__GNUC__) && (__GNUC__ < 5)
 // https://wg21.link/cwg1558
 #define UTL_WORKAROUND_CWG_1558
#endif

//! Base library requirement
#if CXX_VER < CXX_VER_STD_14
#error "uTL requires C++14"
#endif

//! @}

//! @}
#endif /* #ifndef __utl_core_version_h__ */