RObjectConverters - Heap clone fix.

.codecov.yml

@@ -13,4 +13,5 @@ comment:
 
 ignore:
   - "demo/**"
-  - "RTLBenchmarkApp/**"
+  - "RTLBenchmarkApp/**"
+  - "ReflectionTemplateLib/rtl/detail/src/RObjectConverters_string.cpp"

README.md

@@ -170,12 +170,12 @@ RTL provides the following callable entities, designed to be as lightweight and
 
 These callable types are regular value types: they can be copied, moved, stored in standard containers, and passed around like any other lightweight object.
 
-When invoked, only type-erased callables return an `rtl::error`, with results provided as `rtl::RObject` when both the return and target types are erased or as `std::optional<T>` when only the target type is erased, while fully type-aware callables return `T` directly with no error (by design).
+When invoked, only type-erased callables return an `rtl::error`, with results provided as `rtl::RObject` *(when both the return and target types are erased)* or as `std::optional<T>` *(when only the target type is erased)*, while fully type-aware callables return `T` directly with no error (by design).
 
 ### How to Build (Windows / Linux)
 ```sh
 mkdir build && cd build
-cmake -G "<Generator>"    # Use a C++20-compatible compiler
+cmake ../ -G "<Generator>"    # Use a C++20-compatible compiler
 cmake --build .
 ```
 Run the generated binaries from `bin/`:

RTLTestRunApp/src/RObjectTests/RObjectReflecting_strings.cpp

@@ -337,43 +337,43 @@ namespace unit_test
         // Create an RObject that reflects a string value (init with 'std::string').
         RObject robj = rtl::reflect(STR_STD_STRING);
 
-        // Check if the value can be accessed as 'std::string'.
-        ASSERT_TRUE(robj.canViewAs<std::string>());
-
-        // Try to obtain a view as 'std::string' and verify it is present.
-        auto view0 = robj.view<std::string>();
-        ASSERT_TRUE(view0.has_value());
-
-        // Validate the string content matches the original input.
-        const std::string& str_cref0 = view0->get();
-        ASSERT_EQ(str_cref0, STR_STD_STRING);
-
-        auto [err, robjcp] = robj.clone<rtl::alloc::Heap>();
-        EXPECT_EQ(err, rtl::error::None);
-        EXPECT_EQ(robj.getTypeId(), robjcp.getTypeId());
-
-        // Check if the value can be accessed as 'std::string'.
-        ASSERT_TRUE(robj.canViewAs<std::string>());
-
-        // Try to obtain a view as 'std::string' and verify it is present.
-        auto view1 = robj.view<std::string>();
-        ASSERT_TRUE(view1.has_value());
-
-        // Validate the string content matches the original input.
-        const std::string& str_cref1 = view1->get();
-        ASSERT_EQ(str_cref1, STR_STD_STRING);
-        ASSERT_TRUE(robjcp.canViewAs<char>());
-        ASSERT_TRUE(robjcp.canViewAs<std::string>());
-
-        //TODO: Fix the crash here.
-
-        // Try to obtain a view as 'const char*' and verify it is present.
-        //auto view2 = robjcp.view<char>();
-        //ASSERT_TRUE(view2.has_value());
-
-        //// Validate the base address are different, since RObject is reflecting a copy.
-        //const char& str_addr = view2->get();
-        //ASSERT_NE(&str_addr, STR_STD_STRING.c_str());
+        EXPECT_TRUE(robj.canViewAs<std::string>());
+        EXPECT_TRUE(robj.canViewAs<char>());
+
+        auto testWithAlloc = [&]<typename rtl::alloc alloc_t>() 
+        {
+            auto [err, robjcp] = robj.clone<alloc_t>();
+
+            EXPECT_EQ(err, rtl::error::None);
+            EXPECT_EQ(robj.getTypeId(), robjcp.getTypeId());
+            {
+                // Check if the value can be accessed as 'std::string'.
+                ASSERT_TRUE(robjcp.template canViewAs<std::string>());
+
+                // Try to obtain a view as 'std::string' and verify it is present.
+                auto view = robjcp.template view<std::string>();
+                ASSERT_TRUE(view.has_value());
+
+                // Validate the string content matches the original input.
+                const std::string& str_cref = view->get();
+                ASSERT_EQ(str_cref, STR_STD_STRING);
+            } {
+                ASSERT_TRUE(robjcp.template canViewAs<char>());
+
+                // Try to obtain a view as 'const char*' and verify it is present.
+                auto view = robjcp.template view<char>();
+                ASSERT_TRUE(view.has_value());
+
+                // Validate the base address are different, since RObject is reflecting a copy.
+                const char& str_addr = view->get();
+                ASSERT_NE(&str_addr, STR_STD_STRING.c_str());
+            }
+        };
+
+        // Should even std::string to 'char' conversion be allowed implicitly?
+        // Need to re-think it. The implicit conversions are not used in core dispatch yet.
+        testWithAlloc.operator()<rtl::alloc::Stack>();
+        testWithAlloc.operator()<rtl::alloc::Heap>();
     }
 
 

ReflectionTemplateLib/rtl/detail/src/RObjectConverters_string.cpp

@@ -11,6 +11,7 @@
 
 #include <rtl/rtl_typeid.h>
 #include <detail/inc/ReflectCast.hpp>
+#include <detail/inc/RObjectUPtr.h>
 
 namespace rtl::detail
 {
@@ -20,10 +21,27 @@ namespace rtl::detail
     {
         const auto& conversion = [](const std::any& pSrc, const EntityKind& pSrcEntityKind, EntityKind& pNewEntityKind)-> std::any
         {
-            pNewEntityKind = EntityKind::Ptr;
-            const auto& isPtr = (pSrcEntityKind == EntityKind::Ptr);
-            const auto& srcObj = (isPtr ? *std::any_cast<const std::string*>(pSrc) : std::any_cast<const std::string&>(pSrc));
-            return std::any(srcObj.c_str());
+            try {
+                pNewEntityKind = EntityKind::Ptr;
+                const auto& isPtr = (pSrcEntityKind == EntityKind::Ptr);
+                // GCOVR_EXCL_START
+                if (pSrcEntityKind == EntityKind::Wrapper) {
+                    //TODO: Will fail for any other wrapper other than 'RObjectUPtr<>'.
+                    const auto& srcRUptr = std::any_cast<const RObjectUPtr<std::string>&>(pSrc);
+                    return std::any(srcRUptr.get()->c_str());
+                }
+                // GCOVR_EXCL_STOP
+                else {
+                    const auto& srcObj = (isPtr ? *std::any_cast<const std::string*>(pSrc) : std::any_cast<const std::string&>(pSrc));
+                    return std::any(srcObj.c_str());
+                }
+            }
+            // GCOVR_EXCL_START
+            catch (const std::exception&) {
+                pNewEntityKind = EntityKind::None;
+                return std::any();
+            }
+            // GCOVR_EXCL_STOP
         };
         conversions().emplace_back(std::pair(traits::uid<char>::value, conversion));
     }
@@ -35,10 +53,27 @@ namespace rtl::detail
     {
         const auto& conversion = [](const std::any& pSrc, const EntityKind& pSrcEntityKind, EntityKind& pNewEntityKind)-> std::any
         {
-            pNewEntityKind = EntityKind::Ptr;
-            const auto& isPtr = (pSrcEntityKind == EntityKind::Ptr);
-            const auto& srcObj = (isPtr ? *std::any_cast<const std::string_view*>(pSrc) : std::any_cast<const std::string_view&>(pSrc));
-            return std::any(srcObj.data());
+            try {
+                pNewEntityKind = EntityKind::Ptr;
+                const auto& isPtr = (pSrcEntityKind == EntityKind::Ptr);
+                // GCOVR_EXCL_START
+                if (pSrcEntityKind == EntityKind::Wrapper) {
+                    //TODO: Will fail for any other wrapper other than 'RObjectUPtr<>'.
+                    const auto& srcRUptr = std::any_cast<const RObjectUPtr<std::string>&>(pSrc);
+                    return std::any(srcRUptr.get()->data());
+                }
+                // GCOVR_EXCL_STOP
+                else {
+                    const auto& srcObj = (isPtr ? *std::any_cast<const std::string_view*>(pSrc) : std::any_cast<const std::string_view&>(pSrc));
+                    return std::any(srcObj.data());
+                }
+            }
+            // GCOVR_EXCL_START
+            catch (const std::exception&) {
+                pNewEntityKind = EntityKind::None;
+                return std::any();
+            }
+            // GCOVR_EXCL_STOP
         };
         conversions().emplace_back(std::pair(traits::uid<char>::value, conversion));
     }
@@ -51,10 +86,27 @@ namespace rtl::detail
         using _toType = std::string;
         const auto& conversion = [](const std::any& pSrc, const EntityKind& pSrcEntityKind, EntityKind& pNewEntityKind)-> std::any
         {
-            pNewEntityKind = EntityKind::Value;
-            const auto& isPtr = (pSrcEntityKind == EntityKind::Ptr);
-            const auto& srcObj = (isPtr ? *std::any_cast<const std::string_view*>(pSrc) : std::any_cast<const std::string_view&>(pSrc));
-            return std::any(_toType(srcObj));
+            try {
+                pNewEntityKind = EntityKind::Value;
+                const auto& isPtr = (pSrcEntityKind == EntityKind::Ptr);
+                // GCOVR_EXCL_START
+                if (pSrcEntityKind == EntityKind::Wrapper) {
+                    //TODO: Will fail for any other wrapper other than 'RObjectUPtr<>'.
+                    const auto& srcRUptr = std::any_cast<const RObjectUPtr<std::string_view>&>(pSrc);
+                    return std::any(_toType(*srcRUptr.get()));
+                }
+                // GCOVR_EXCL_STOP
+                else {
+                    const auto& srcObj = (isPtr ? *std::any_cast<const std::string_view*>(pSrc) : std::any_cast<const std::string_view&>(pSrc));
+                    return std::any(_toType(srcObj));
+                }
+            }
+            // GCOVR_EXCL_START
+            catch (const std::exception&) {
+                pNewEntityKind = EntityKind::None;
+                return std::any();
+            }
+            // GCOVR_EXCL_STOP
         };
         conversions().emplace_back(std::pair(traits::uid<_toType>::value, conversion));
     }