refs match conversion operators

include/mrdocs/Dom/Function.hpp

@@ -14,7 +14,7 @@
 #include <mrdocs/Platform.hpp>
 #include <mrdocs/Dom/Kind.hpp>
 #include <mrdocs/Dom/String.hpp>
-#include <mrdocs/Support/Error.hpp>
+#include <mrdocs/Support/Expected.hpp>
 #include <memory>
 
 namespace clang {

include/mrdocs/Dom/Object.hpp

@@ -13,7 +13,7 @@
 #define MRDOCS_API_DOM_OBJECT_HPP
 
 #include <mrdocs/Platform.hpp>
-#include <mrdocs/Support/Error.hpp>
+#include <mrdocs/Support/Expected.hpp>
 #include <iterator>
 #include <memory>
 #include <vector>

include/mrdocs/Metadata/Info/Overloads.hpp

@@ -30,6 +30,9 @@ struct OverloadsInfo final
     /// The members of the overload set.
     std::vector<SymbolID> Members;
 
+    /// Info about the return type of this function.
+    Polymorphic<TypeInfo> ReturnType;
+
     //--------------------------------------------
 
     explicit OverloadsInfo(SymbolID const& ID) noexcept

include/mrdocs/Support/Algorithm.hpp

@@ -90,6 +90,31 @@ contains_n(Range const& range, El const& el, std::size_t n)
     return false;
 }
 
+/** Find the last element in a range that matches an element in the specified range.
+    @param range The range to search.
+    @param els The elements to search for.
+    @return An iterator to the last element found, or range.end() if not found.
+ */
+template <std::ranges::range Range, std::ranges::range Els>
+requires std::equality_comparable_with<std::ranges::range_value_t<Els>, std::ranges::range_value_t<Range>>
+auto
+find_last_of(Range&& range, Els&& els)
+{
+    if (std::ranges::empty(range))
+    {
+        return std::ranges::end(range);
+    }
+    auto it = std::ranges::end(range);
+    do {
+        --it;
+        if (contains(els, *it))
+        {
+            return it;
+        }
+    } while (it != std::ranges::begin(range));
+    return std::ranges::end(range);
+}
+
 } // clang::mrdocs
 
 #endif