ETL Traits

A set of traits that reflect the platform settings. It gives a C++ style interface to the library macros.

The traits are accessed under the etl::traits namespace.

All traits are constexpr for C++11 and above, const for C++03 and below.

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Trait Type Defined Macro

using_stl bool platform.h ETL_USING_STL

using_stlport bool platform.h ETL_USING_STLPORT

using_cpp11 bool platform.h ETL_USING_CPP11

using_cpp14 bool platform.h ETL_USING_CPP14

using_cpp17 bool platform.h ETL_USING_CPP17

using_cpp20 bool platform.h ETL_USING_CPP20

using_cpp23 bool platform.h ETL_USING_CPP23

cplusplus long builtin __cplusplus

language_standard int platform.h ETL_LANGUAGE_STANDARD

using_exceptions bool platform.h ETL_USING_EXCEPTIONS

using_gcc_compiler bool platform.h ETL_USING_GCC_COMPILER

using_microsoft_compiler bool platform.h ETL_USING_MICROSOFT_COMPILER

using_arm5_compiler bool platform.h ETL_USING_ARM5_COMPILER

using_arm6_compiler bool platform.h ETL_USING_ARM6_COMPILER

using_arm7_compiler bool platform.h ETL_USING_ARM7_COMPILER

using_clang_compiler bool platform.h ETL_USING_CLANG_COMPILER

using_green_hills_compiler bool platform.h ETL_USING_GREEN_HILLS_COMPILER

using_iar_compiler bool platform.h ETL_USING_IAR_COMPILER

using_intel_compiler bool platform.h ETL_USING_INTEL_COMPILER

using_texas_instruments_compiler bool platform.h ETL_USING_TEXAS_INSTRUMENTS_COMPILER

using_generic_compiler bool platform.h ETL_USING_GENERIC_COMPILER

has_8bit_types bool platform.h ETL_USING_8BIT_TYPES

has_64bit_types bool platform.h ETL_USING_64BIT_TYPES

has_atomic bool platform.h ETL_HAS_ATOMIC

has_mutex bool mutex.h ETL_HAS_MUTEX

has_nullptr bool platform.h ETL_HAS_NULLPTR

has_char8_t bool platform.h ETL_HAS_CHAR8_T

has_native_char8_t bool platform.h ETL_HAS_NATIVE_CHAR8_T

has_native_char16_t bool platform.h ETL_HAS_NATIVE_CHAR16_T

has_native_char32_t bool platform.h ETL_HAS_NATIVE_CHAR32_T

has_string_truncation_checks bool platform.h ETL_HAS_STRING_TRUNCATION_CHECKS

has_error_on_string_truncation bool platform.h ETL_HAS_ERROR_ON_STRING_TRUNCATION

has_string_clear_after_use bool platform.h ETL_HAS_STRING_CLEAR_AFTER_USE

has_istring_repair bool platform.h ETL_HAS_ISTRING_REPAIR

has_ivector_repair bool platform.h ETL_HAS_IVECTOR_REPAIR

has_mutable_array_view bool platform.h ETL_HAS_MUTABLE_ARRAY_VIEW

has_ideque_repair bool platform.h ETL_HAS_IDEQUE_REPAIR

has_initializer_list bool platform.h ETL_HAS_INITIALIZER_LIST

is_debug_build bool platform.h ETL_IS_DEBUG_BUILD

version long version.h ETL_VERSION_VALUE

version_major long version.h ETL_VERSION_MAJOR

version_minor long version.h ETL_VERSION_MINOR

version_patch long version.h ETL_VERSION_PATCH

version_string const char* version.h ETL_VERSION

version_wstring const wchar_t* version.h ETL_VERSION_W

version_u8string const char8_t* version.h ETL_VERSION_U8 has_native_char8_t

version_u16string const char16_t* version.h ETL_VERSION_U16 has_native_char16_t

version_u32string const char32_t* version.h ETL_VERSION_U32 has_native_char32_t

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Examples

if constexpr(etl::traits::is_debug_build)

{

std::cerr << etl::traits::version_string;

}

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template <bool Has_Atomic = etl::traits::has_atomic>

class Controller;

template<>

class Controller<false>

{

etl::mutex lock;

};

template<>

class Controller<true>

{

etl::atomic_int lock;

};