add boost on mac

macx64/include/boost/outcome/try.hpp

@@ -0,0 +1,150 @@
+/* Try operation macros
+(C) 2017-2019 Niall Douglas <http://www.nedproductions.biz/> (59 commits)
+File Created: July 2017
+
+
+Boost Software License - Version 1.0 - August 17th, 2003
+
+Permission is hereby granted, free of charge, to any person or organization
+obtaining a copy of the software and accompanying documentation covered by
+this license (the "Software") to use, reproduce, display, distribute,
+execute, and transmit the Software, and to prepare derivative works of the
+Software, and to permit third-parties to whom the Software is furnished to
+do so, all subject to the following:
+
+The copyright notices in the Software and this entire statement, including
+the above license grant, this restriction and the following disclaimer,
+must be included in all copies of the Software, in whole or in part, and
+all derivative works of the Software, unless such copies or derivative
+works are solely in the form of machine-executable object code generated by
+a source language processor.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
+*/
+
+#ifndef BOOST_OUTCOME_TRY_HPP
+#define BOOST_OUTCOME_TRY_HPP
+
+#include "success_failure.hpp"
+
+namespace std  // NOLINT
+{
+  namespace experimental
+  {
+    template <class T, class E> class expected;
+    template <class E> class unexpected;
+  }  // namespace experimental
+}  // namespace std
+
+BOOST_OUTCOME_V2_NAMESPACE_BEGIN
+
+/*! AWAITING HUGO JSON CONVERSION TOOL 
+SIGNATURE NOT RECOGNISED
+*/
+BOOST_OUTCOME_TEMPLATE(class T)
+BOOST_OUTCOME_TREQUIRES(BOOST_OUTCOME_TEXPR(std::declval<T>().as_failure()))
+inline decltype(auto) try_operation_return_as(T &&v)
+{
+  return static_cast<T &&>(v).as_failure();
+}
+/*! AWAITING HUGO JSON CONVERSION TOOL 
+SIGNATURE NOT RECOGNISED
+*/
+template <class T, class E> inline auto try_operation_return_as(const std::experimental::expected<T, E> &v)
+{
+  return std::experimental::unexpected<E>(v.error());
+}
+/*! AWAITING HUGO JSON CONVERSION TOOL 
+SIGNATURE NOT RECOGNISED
+*/
+template <class T, class E> inline auto try_operation_return_as(std::experimental::expected<T, E> &&v)
+{
+  return std::experimental::unexpected<E>(static_cast<std::experimental::expected<T, E> &&>(v).error());
+}
+
+namespace detail
+{
+  BOOST_OUTCOME_TEMPLATE(class T)
+  BOOST_OUTCOME_TREQUIRES(BOOST_OUTCOME_TEXPR(std::declval<T>().assume_value()))
+  inline decltype(auto) try_extract_value(T &&v) { return static_cast<T &&>(v).assume_value(); }
+
+  template <class T, class... Args> inline decltype(auto) try_extract_value(T &&v, Args &&... /*unused*/) { return static_cast<T &&>(v).value(); }
+}  // namespace detail
+
+BOOST_OUTCOME_V2_NAMESPACE_END
+
+#define BOOST_OUTCOME_TRY_GLUE2(x, y) x##y
+#define BOOST_OUTCOME_TRY_GLUE(x, y) BOOST_OUTCOME_TRY_GLUE2(x, y)
+#define BOOST_OUTCOME_TRY_UNIQUE_NAME BOOST_OUTCOME_TRY_GLUE(_outcome_try_unique_name_temporary, __COUNTER__)
+
+#define BOOST_OUTCOME_TRY_RETURN_ARG_COUNT(_1_, _2_, _3_, _4_, _5_, _6_, _7_, _8_, count, ...) count
+#define BOOST_OUTCOME_TRY_EXPAND_ARGS(args) BOOST_OUTCOME_TRY_RETURN_ARG_COUNT args
+#define BOOST_OUTCOME_TRY_COUNT_ARGS_MAX8(...) BOOST_OUTCOME_TRY_EXPAND_ARGS((__VA_ARGS__, 8, 7, 6, 5, 4, 3, 2, 1, 0))
+#define BOOST_OUTCOME_TRY_OVERLOAD_MACRO2(name, count) name##count
+#define BOOST_OUTCOME_TRY_OVERLOAD_MACRO1(name, count) BOOST_OUTCOME_TRY_OVERLOAD_MACRO2(name, count)
+#define BOOST_OUTCOME_TRY_OVERLOAD_MACRO(name, count) BOOST_OUTCOME_TRY_OVERLOAD_MACRO1(name, count)
+#define BOOST_OUTCOME_TRY_OVERLOAD_GLUE(x, y) x y
+#define BOOST_OUTCOME_TRY_CALL_OVERLOAD(name, ...) BOOST_OUTCOME_TRY_OVERLOAD_GLUE(BOOST_OUTCOME_TRY_OVERLOAD_MACRO(name, BOOST_OUTCOME_TRY_COUNT_ARGS_MAX8(__VA_ARGS__)), (__VA_ARGS__))
+
+#if !defined(__clang__) && defined(__GNUC__) && __GNUC__ >= 8
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wparentheses"
+#endif
+
+#define BOOST_OUTCOME_TRYV2(unique, ...)                                                                                                                                                                                                                                                                                             \
+  auto && (unique) = (__VA_ARGS__);                                                                                                                                                                                                                                                                                            \
+  if(!(unique).has_value())                                                                                                                                                                                                                                                                                                    \
+  return BOOST_OUTCOME_V2_NAMESPACE::try_operation_return_as(static_cast<decltype(unique) &&>(unique))
+#define BOOST_OUTCOME_TRY2(unique, v, ...)                                                                                                                                                                                                                                                                                           \
+  BOOST_OUTCOME_TRYV2(unique, __VA_ARGS__);                                                                                                                                                                                                                                                                                          \
+  auto && (v) = BOOST_OUTCOME_V2_NAMESPACE::detail::try_extract_value(static_cast<decltype(unique) &&>(unique))
+
+#if !defined(__clang__) && defined(__GNUC__) && __GNUC__ >= 8
+#pragma GCC diagnostic pop
+#endif
+
+/*! AWAITING HUGO JSON CONVERSION TOOL 
+SIGNATURE NOT RECOGNISED
+*/
+#define BOOST_OUTCOME_TRYV(...) BOOST_OUTCOME_TRYV2(BOOST_OUTCOME_TRY_UNIQUE_NAME, __VA_ARGS__)
+
+#if defined(__GNUC__) || defined(__clang__)
+
+/*! AWAITING HUGO JSON CONVERSION TOOL 
+SIGNATURE NOT RECOGNISED
+*/
+#define BOOST_OUTCOME_TRYX(...)                                                                                                                                                                                                                                                                                                      \
+  ({                                                                                                                                                                                                                                                                                                                           \
+    auto &&res = (__VA_ARGS__);                                                                                                                                                                                                                                                                                                \
+    if(!res.has_value())                                                                                                                                                                                                                                                                                                       \
+      return BOOST_OUTCOME_V2_NAMESPACE::try_operation_return_as(static_cast<decltype(res) &&>(res));                                                                                                                                                                                                                                \
+    BOOST_OUTCOME_V2_NAMESPACE::detail::try_extract_value(static_cast<decltype(res) &&>(res));                                                                                                                                                                                                                                       \
+  \
+})
+#endif
+
+/*! AWAITING HUGO JSON CONVERSION TOOL 
+SIGNATURE NOT RECOGNISED
+*/
+#define BOOST_OUTCOME_TRYA(v, ...) BOOST_OUTCOME_TRY2(BOOST_OUTCOME_TRY_UNIQUE_NAME, v, __VA_ARGS__)
+
+#define BOOST_OUTCOME_TRY_INVOKE_TRY8(a, b, c, d, e, f, g, h) BOOST_OUTCOME_TRYA(a, b, c, d, e, f, g, h)
+#define BOOST_OUTCOME_TRY_INVOKE_TRY7(a, b, c, d, e, f, g) BOOST_OUTCOME_TRYA(a, b, c, d, e, f, g)
+#define BOOST_OUTCOME_TRY_INVOKE_TRY6(a, b, c, d, e, f) BOOST_OUTCOME_TRYA(a, b, c, d, e, f)
+#define BOOST_OUTCOME_TRY_INVOKE_TRY5(a, b, c, d, e) BOOST_OUTCOME_TRYA(a, b, c, d, e)
+#define BOOST_OUTCOME_TRY_INVOKE_TRY4(a, b, c, d) BOOST_OUTCOME_TRYA(a, b, c, d)
+#define BOOST_OUTCOME_TRY_INVOKE_TRY3(a, b, c) BOOST_OUTCOME_TRYA(a, b, c)
+#define BOOST_OUTCOME_TRY_INVOKE_TRY2(a, b) BOOST_OUTCOME_TRYA(a, b)
+#define BOOST_OUTCOME_TRY_INVOKE_TRY1(a) BOOST_OUTCOME_TRYV(a)
+/*! AWAITING HUGO JSON CONVERSION TOOL 
+SIGNATURE NOT RECOGNISED
+*/
+#define BOOST_OUTCOME_TRY(...) BOOST_OUTCOME_TRY_CALL_OVERLOAD(BOOST_OUTCOME_TRY_INVOKE_TRY, __VA_ARGS__)
+
+#endif