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rawpatchinlineside by side (parent: 8898363)
rawpatchinlineside by side (parent: 8898363)
| author | Sven Verdoolaege <sven.verdoolaege@gmail.com> | |
| Sun, 26 Oct 2025 11:41:58 +0000 (26 12:41 +0100) | ||
| committer | Sven Verdoolaege <sven.verdoolaege@gmail.com> | |
| Sat, 22 Nov 2025 14:26:18 +0000 (22 15:26 +0100) |
Commit isl-0.26-152-g146c2f6aa8 (interface: update to removal of
SourceManager::createFileID(FileEntry*), Sat Jul 6 18:34:27 2024 +0200)
introduced a mechanism for detecting the presence of
the getFileRef method in FileManager that should be valid C++11,
but that apparently does not work in gcc 4.9.
Use a different mechanism that moreover checks for a specific overload
rather than just the presence of some getFileRef method.
Signed-off-by: Sven Verdoolaege <sven.verdoolaege@gmail.com>
SourceManager::createFileID(FileEntry*), Sat Jul 6 18:34:27 2024 +0200)
introduced a mechanism for detecting the presence of
the getFileRef method in FileManager that should be valid C++11,
but that apparently does not work in gcc 4.9.
Use a different mechanism that moreover checks for a specific overload
rather than just the presence of some getFileRef method.
Signed-off-by: Sven Verdoolaege <sven.verdoolaege@gmail.com>
| interface/extract_interface.cc | patchblobblamehistory |
return ignore_error_helper(obj, 0, NULL);
}
-/* This is identical to std::void_t in C++17.
- */
-template< class... >
-using void_t = void;
-
/* A template class with value true if "T" has a getFileRef method.
*/
-template <class T, class = void>
-struct HasGetFileRef : public std::false_type {};
-template <class T>
-struct HasGetFileRef<T, ::void_t<decltype(&T::getFileRef)>> :
- public std::true_type {};
+template <typename T>
+struct HasGetFileRef {
+private:
+ template <typename U>
+ static auto test(int) ->
+ decltype(std::declval<U>().
+ getFileRef(std::declval<const std::string &>()), std::true_type());
+
+ template <typename>
+ static std::false_type test(...);
+
+public:
+ using type = decltype(test<T>(0));
+ static constexpr bool value = type::value;
+};
/* Return the FileEntryRef/FileEntry corresponding to the given file name or
* an error if anything went wrong.