WIP

.github/stale.yml

@@ -1,19 +0,0 @@
-# Number of days of inactivity before an issue becomes stale
-daysUntilStale: 60
-# Number of days of inactivity before a stale issue is closed
-daysUntilClose: 7
-# Issues with these labels will never be considered stale
-exemptLabels:
-  - pinned
-  - security
-  - feature request
-  - enhancement
-# Label to use when marking an issue as stale
-staleLabel: stale
-# Comment to post when marking an issue as stale. Set to `false` to disable
-markComment: >
-  This issue has been automatically marked as stale because it has not had
-  recent activity. It will be closed if no further activity occurs. Thank you
-  for your contributions.
-# Comment to post when closing a stale issue. Set to `false` to disable
-closeComment: false

CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.17.0 FATAL_ERROR)
+cmake_minimum_required(VERSION 3.1.0 FATAL_ERROR)
 
 # set metadata
 project(reflective_rapidjson)

README.md

@@ -62,19 +62,18 @@ The following table shows the mapping of supported C++ types to supported JSON t
 | iteratable lists (`std::vector`, `std::list`, ...)                           | array        |
 | sets (`std::set`, `std::unordered_set`, `std::multiset`, ...)                | array        |
 | `std::pair`, `std::tuple`                                                    | array        |
-| `std::unique_ptr`, `std::shared_ptr`, `std::optional`                        | depends/null |
+| `std::unique_ptr`, `std::shared_ptr`                                         | depends/null |
 | `std::map`, `std::unordered_map`, `std::multimap`, `std::unordered_multimap` | object       |
 | `std::variant`                                                               | object       |
 | `JsonSerializable`                                                           | object       |
 
 ### Remarks
-* Raw pointers are not supported. This prevents
+* Raw pointer are not supported. This prevents
   forgetting to free memory which would have to be allocated when deserializing.
 * For the same reason `const char *` and `std::string_view` are only supported for serialization.
 * Enums are (de)serialized as their underlying integer value. When deserializing, it is currently *not* checked
   whether the present integer value is a valid enumeration item.
-* The JSON type for smart pointers and `std::optional` depends on the type the pointer/optional refers to.
-  It can also be `null` for null pointers or `std::optional` without value.
+* The JSON type for smart pointer depends on the type the pointer refers to. It can also be `null`.
 * If multiple `std::shared_ptr` instances point to the same object this object is serialized multiple times.
   When deserializing those identical objects, it is currently not possible to share the memory (again). So each
   `std::shared_ptr` will point to its own copy. Note that this limitation is *not* present when using binary
@@ -354,54 +353,6 @@ An example for such custom (de)serialization can be found in the file
 `json/reflector-chronoutilities.h`. It provides (de)serialization of `DateTime` and
 `TimeSpan` objects from the C++ utilities library mentioned under dependencies.
 
-### Versioning
-#### JSON (de)serializer
-The JSON (de)serializer doesn't support versioning at this point. It'll simply read/write the
-members present in the struct. Additional members (which were e.g. present in older/newer
-versions of the struct) are ignored when reading and in consequence dropped when writing.
-
-#### Binary (de)serializer
-The binary (de)serializer supports *very* experimental versioning. Otherwise adding/removing
-members is a breaking change. The versioning looks like this:
-
-<pre>
-// enable definition of the macros shown below (otherwise use long macros defined in
-// `lib/versioning.h`)
-#define REFLECTIVE_RAPIDJSON_SHORT_MACROS
-
-#include &lt;reflective_rapidjson/binary/serializable.h&gt;
-
-// example struct where version is *not* serialized/deserialized; defaults to version from
-// outer scope when reading/writing, defaults to version 0 on top-level
-struct Nested : public BinarySerializable&lt;Nested&gt; { //
-    std::uint32_t foo; // will be read/written in any case
-
-as_of_version(3):
-    std::uint32_t bar; // will be read/written if outer scope version is &gt;= 3
-};
-
-// example struct where version is serialized/deserialized; defaults to version 3 when writing
-struct Example : public BinarySerializable&lt;Example, 3&gt; {
-    Nested nested;      // will be read/written in any case, version is "propagated down"
-    std::uint32_t a, b; // will be read/written in any case
-
-until_version(2):
-    std::uint32_t c, d; // will be read/written if version is &lt;= 2
-
-as_of_version(3):
-    std::uint32_t e, f; // will be read/written if version is &gt;= 3
-
-as_of_version(4):
-    std::uint32_t g;    // will be read/written if version is &gt;= 4
-};
-</pre>
-
-The version specified as template argument is also assumed to be the highest supported version.
-If a higher version is encountered during deserialization, `BinaryVersionNotSupported` is thrown
-and the deserialization aborted.
-
-Note that the versioning is mostly untested at this point.
-
 ### Remarks
 * Static member variables and member functions are currently ignored by the generator.
 * It is currently not possible to ignore a specific member variable.
@@ -511,7 +462,7 @@ make
 make check
 # build tests but do not run them (optional, requires CppUnit)
 make tests
-# generate API documentation (optional, requires Doxygen)
+# generate API documentation (optional, reqquires Doxygen)
 make apidoc
 # install header files, libraries and generator
 make install DESTDIR="/temporary/install/location"
@@ -534,8 +485,3 @@ Add eg. `-j$(nproc)` to `make` arguments for using all cores.
 
 These packages shows the required dependencies and commands to build in a plain way. So they might be useful for
 making Reflective RapidJSON available under other platforms, too.
-
-## Copyright notice and license
-Copyright © 2017-2023 Marius Kittler
-
-All code is licensed under [GPL-2-or-later](LICENSE).

TODOs.md

@@ -29,5 +29,5 @@
 - [x] Support `std::unique_ptr` and `std::shared_ptr`
 - [x] Support `std::map` and `std::unordered_map`
 - [ ] Support `std::any`
-- [x] Support `std::optional`
+- [ ] Support `std::optional`
 - [x] Support/document customized (de)serialization (eg. serialize some `DateTime` object to ISO string representation)

generator/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.17.0 FATAL_ERROR)
+cmake_minimum_required(VERSION 3.1.0 FATAL_ERROR)
 
 # metadata
 set(META_PROJECT_NAME reflective_rapidjson_generator)
@@ -60,9 +60,6 @@ endif ()
 # also add reflective_rapidjson which is header-only but might pull additional include dirs for RapidJSON
 list(APPEND PRIVATE_LIBRARIES "${REFLECTIVE_RAPIDJSON_TARGET_NAME}")
 
-# avoid warning "'this' pointer is null" from GCC 12 about code included from libclang
-list(APPEND META_PRIVATE_COMPILE_OPTIONS "-Wno-error=nonnull")
-
 # include modules to apply configuration
 include(BasicConfig)
 include(WindowsResources)

generator/binaryserializationcodegenerator.cpp

@@ -246,10 +246,6 @@ void BinarySerializationCodeGenerator::generate(std::ostream &os) const
         // print writeCustomType method
         os << "template <> " << visibility << " void writeCustomType<::" << relevantClass.qualifiedName
            << ">(BinarySerializer &serializer, const ::" << relevantClass.qualifiedName << " &customObject, BinaryVersion version)\n{\n";
-        os << "    // write base classes\n";
-        for (const RelevantClass *baseClass : relevantBases) {
-            os << "    serializer.write(static_cast<const ::" << baseClass->qualifiedName << " &>(customObject), version);\n";
-        }
         if (!relevantClass.relevantBase.empty()) {
             os << "    // write version\n"
                   "    using V = Versioning<"
@@ -257,8 +253,14 @@ void BinarySerializationCodeGenerator::generate(std::ostream &os) const
                << ">;\n"
                   "    if constexpr (V::enabled) {\n"
                   "        serializer.writeVariableLengthUIntBE(V::applyDefault(version));\n"
+                  "    } else {\n"
+                  "        (void)version;\n"
                   "    }\n";
         }
+        os << "    // write base classes\n";
+        for (const RelevantClass *baseClass : relevantBases) {
+            os << "    serializer.write(static_cast<const ::" << baseClass->qualifiedName << " &>(customObject), version);\n";
+        }
         os << "    // write members\n";
         auto mt = MemberTracking();
         for (clang::Decl *const decl : relevantClass.record->decls()) {
@@ -293,7 +295,7 @@ void BinarySerializationCodeGenerator::generate(std::ostream &os) const
         }
         mt.concludeCondition(os);
         if (relevantBases.empty() && !mt.membersWritten) {
-            os << "    (void)serializer;\n    (void)customObject;\n    \n(void)version;";
+            os << "    (void)serializer;\n    (void)customObject;\n";
         }
         os << "}\n";
 
@@ -305,22 +307,20 @@ void BinarySerializationCodeGenerator::generate(std::ostream &os) const
         // print readCustomType method
         mt = MemberTracking();
         os << "template <> " << visibility << " BinaryVersion readCustomType<::" << relevantClass.qualifiedName
-           << ">(BinaryDeserializer &deserializer, ::" << relevantClass.qualifiedName << " &customObject, BinaryVersion version)\n{\n";
-        os << "    // read base classes\n";
-        for (const RelevantClass *baseClass : relevantBases) {
-            os << "    deserializer.read(static_cast<::" << baseClass->qualifiedName << " &>(customObject), version);\n";
-        }
+           << ">(BinaryDeserializer &deserializer, ::" << relevantClass.qualifiedName << " &customObject)\n{\n";
         if (!relevantClass.relevantBase.empty()) {
             os << "    // read version\n"
-                  "    using V = Versioning<"
+                  "    auto version = BinaryVersion();\n"
+                  "    if constexpr (Versioning<"
                << relevantClass.relevantBase
-               << ">;\n"
-                  "    if constexpr (V::enabled) {\n"
-                  "        V::assertVersion(version = deserializer.readVariableLengthUIntBE(), \""
-               << relevantClass.qualifiedName
-               << "\");\n"
+               << ">::enabled) {\n"
+                  "        version = deserializer.readVariableLengthUIntBE();\n"
                   "    }\n";
         }
+        os << "    // read base classes\n";
+        for (const RelevantClass *baseClass : relevantBases) {
+            os << "    deserializer.read(static_cast<::" << baseClass->qualifiedName << " &>(customObject));\n";
+        }
         os << "    // read members\n";
         for (clang::Decl *const decl : relevantClass.record->decls()) {
             // check static member variables for version markers
@@ -344,7 +344,7 @@ void BinarySerializationCodeGenerator::generate(std::ostream &os) const
             mt.writeExtraPadding(os);
 
             if (readPrivateMembers || field->getAccess() == clang::AS_public) {
-                os << "    deserializer.read(customObject." << field->getName() << ", version);\n";
+                os << "    deserializer.read(customObject." << field->getName() << ");\n";
                 mt.membersWritten = true;
             }
         }

generator/jsonserializationcodegenerator.cpp

@@ -127,7 +127,7 @@ void JsonSerializationCodeGenerator::generate(ostream &os) const
             }
         }
         if (relevantBases.empty() && !pushWritten) {
-            os << "    (void)reflectable;\n    (void)value;\n    (void)allocator;\n";
+            os << "    (void)reflectable;\n    (void)value;\n";
         }
         os << "}\n";
 
@@ -146,7 +146,7 @@ void JsonSerializationCodeGenerator::generate(ostream &os) const
             os << "    pull(static_cast<::" << baseClass->qualifiedName << " &>(reflectable), value, errors);\n";
         }
         os << "    // set error context for current record\n"
-              "    const char *previousRecord = nullptr;\n"
+              "    const char *previousRecord;\n"
               "    if (errors) {\n"
               "        previousRecord = errors->currentRecord;\n"
               "        errors->currentRecord = \""

generator/serializationcodegenerator.cpp

@@ -5,8 +5,6 @@
 #include <clang/AST/DeclCXX.h>
 #include <clang/AST/DeclFriend.h>
 #include <clang/AST/DeclTemplate.h>
-#include <clang/AST/PrettyPrinter.h>
-#include <clang/AST/QualTypeNames.h>
 
 #include <iostream>
 
@@ -96,13 +94,12 @@ void SerializationCodeGenerator::computeRelevantClass(RelevantClass &possiblyRel
 
     // consider all classes inheriting from an instantiation of "JsonSerializable" relevant
     if (const auto *const relevantBase = inheritsFromInstantiationOf(possiblyRelevantClass.record, m_qualifiedNameOfRecords)) {
-        auto policy = clang::PrintingPolicy(possiblyRelevantClass.record->getASTContext().getLangOpts());
-        policy.FullyQualifiedName = true;
-        policy.SuppressScope = false;
-        policy.SuppressUnwrittenScope = false;
-        policy.SplitTemplateClosers = false;
-        possiblyRelevantClass.relevantBase
-            = clang::TypeName::getFullyQualifiedName(relevantBase->getType(), possiblyRelevantClass.record->getASTContext(), policy, true);
+        cerr << "record: " << possiblyRelevantClass.qualifiedName << '\n';
+        for (const clang::CXXBaseSpecifier base : possiblyRelevantClass.record->bases()) {
+            cerr << "base: " << base.getType().getAsString() << '\n';
+        }
+        cerr << "relevant base: " << relevantBase->getType().getAsString();
+        possiblyRelevantClass.relevantBase = relevantBase->getType().getAsString();
         possiblyRelevantClass.isRelevant = IsRelevant::Yes;
         return;
     }

generator/testfiles/some_structs_json_serialization.h

@@ -13,7 +13,7 @@ template <>  void pull<::TestNamespace1::Person>(::TestNamespace1::Person &refle
 {
     // pull base classes
     // set error context for current record
-    const char *previousRecord = nullptr;
+    const char *previousRecord;
     if (errors) {
         previousRecord = errors->currentRecord;
         errors->currentRecord = "TestNamespace1::Person";
@@ -39,7 +39,7 @@ template <>  void pull<::TestNamespace2::ThirdPartyStruct>(::TestNamespace2::Thi
 {
     // pull base classes
     // set error context for current record
-    const char *previousRecord = nullptr;
+    const char *previousRecord;
     if (errors) {
         previousRecord = errors->currentRecord;
         errors->currentRecord = "TestNamespace2::ThirdPartyStruct";

generator/tests/morestructs.h

@@ -70,11 +70,6 @@ struct PointerStruct : public BinarySerializable<PointerStruct> {
     std::shared_ptr<PointerTarget> s3;
 };
 
-/*!
- * \brief All of this is supposed to work if classes are within a namespace so let's use a namespace here.
- */
-namespace SomeNamespace {
-
 /*!
  * \brief The PointerStruct struct is used to test the behavior of the binary (de)serialization with smart pointer.
  */
@@ -93,6 +88,4 @@ as_of_version(4):
 };
 // clang-format on
 
-} // namespace SomeNamespace
-
 #endif // REFLECTIVE_RAPIDJSON_TESTS_MORE_STRUCTS_H

lib/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.17.0 FATAL_ERROR)
+cmake_minimum_required(VERSION 3.1.0 FATAL_ERROR)
 
 # metadata
 set(META_PROJECT_TYPE library)

lib/binary/reflector-boosthana.h

@@ -24,17 +24,19 @@
 namespace ReflectiveRapidJSON {
 namespace BinaryReflector {
 
-template <typename Type, Traits::EnableIf<IsCustomType<Type>> *>
-BinaryVersion readCustomType(BinaryDeserializer &deserializer, Type &customType, BinaryVersion version)
+template <typename Type, Traits::EnableIf<IsCustomType<Type>> *> BinaryVersion readCustomType(BinaryDeserializer &deserializer, Type &customType)
 {
-    boost::hana::for_each(boost::hana::keys(customType), [&](auto key) { deserializer.read(boost::hana::at_key(customType, key), version); });
+    boost::hana::for_each(
+        boost::hana::keys(customType), [&deserializer, &customType](auto key) { deserializer.read(boost::hana::at_key(customType, key)); });
     return 0;
 }
 
 template <typename Type, Traits::EnableIf<IsCustomType<Type>> *>
 void writeCustomType(BinarySerializer &serializer, const Type &customType, BinaryVersion version)
 {
-    boost::hana::for_each(boost::hana::keys(customType), [&](auto key) { serializer.write(boost::hana::at_key(customType, key), version); });
+    CPP_UTILITIES_UNUSED(version)
+    boost::hana::for_each(
+        boost::hana::keys(customType), [&serializer, &customType](auto key) { serializer.write(boost::hana::at_key(customType, key)); });
 }
 
 } // namespace BinaryReflector

lib/binary/reflector-chronoutilities.h

@@ -16,10 +16,8 @@
 namespace ReflectiveRapidJSON {
 namespace BinaryReflector {
 
-template <>
-inline BinaryVersion readCustomType<CppUtilities::DateTime>(BinaryDeserializer &deserializer, CppUtilities::DateTime &dateTime, BinaryVersion version)
+template <> inline BinaryVersion readCustomType<CppUtilities::DateTime>(BinaryDeserializer &deserializer, CppUtilities::DateTime &dateTime)
 {
-    CPP_UTILITIES_UNUSED(version)
     deserializer.read(dateTime.ticks());
     return 0;
 }
@@ -31,10 +29,8 @@ inline void writeCustomType<CppUtilities::DateTime>(BinarySerializer &serializer
     serializer.write(dateTime.totalTicks());
 }
 
-template <>
-inline BinaryVersion readCustomType<CppUtilities::TimeSpan>(BinaryDeserializer &deserializer, CppUtilities::TimeSpan &timeSpan, BinaryVersion version)
+template <> inline BinaryVersion readCustomType<CppUtilities::TimeSpan>(BinaryDeserializer &deserializer, CppUtilities::TimeSpan &timeSpan)
 {
-    CPP_UTILITIES_UNUSED(version)
     deserializer.read(timeSpan.ticks());
     return 0;
 }

lib/binary/reflector.h

@@ -8,7 +8,6 @@
  */
 
 #include "../traits.h"
-#include "../versioning.h"
 
 #include <c++utilities/conversion/conversionexception.h>
 #include <c++utilities/io/binaryreader.h>
@@ -17,7 +16,6 @@
 #include <any>
 #include <limits>
 #include <memory>
-#include <optional>
 #include <string>
 #include <variant>
 
@@ -36,6 +34,7 @@ template <typename T> struct AdaptedBinarySerializable : public Traits::Bool<fal
 };
 
 using BinaryVersion = std::uint64_t;
+
 template <typename Type, BinaryVersion v = 0> struct BinarySerializable;
 
 /*!
@@ -47,29 +46,17 @@ namespace BinaryReflector {
 template <typename Type>
 using IsBuiltInType = Traits::Any<Traits::IsAnyOf<Type, char, std::uint8_t, bool, std::string, std::int16_t, std::uint16_t, std::int32_t,
                                       std::uint32_t, std::int64_t, std::uint64_t, float, double>,
-    Traits::IsIteratable<Type>, Traits::IsSpecializingAnyOf<Type, std::pair, std::unique_ptr, std::shared_ptr, std::optional>, std::is_enum<Type>,
-    IsVariant<Type>>;
+    Traits::IsIteratable<Type>, Traits::IsSpecializingAnyOf<Type, std::pair, std::unique_ptr, std::shared_ptr>, std::is_enum<Type>, IsVariant<Type>>;
 template <typename Type> using IsCustomType = Traits::Not<IsBuiltInType<Type>>;
 
 class BinaryDeserializer;
 class BinarySerializer;
 
-/// \brief Reads \a customType via \a deserializer.
-/// \remarks
-/// - If \tp Type is versioned, the version is determined from the data. Otherwise \a version is assumed.
-/// - The determined or specified \a version shall be passed to nested invocations.
-/// \returns Returns the determined/assumed version.
 template <typename Type, Traits::EnableIf<IsCustomType<Type>> * = nullptr>
-BinaryVersion readCustomType(BinaryDeserializer &deserializer, Type &customType, BinaryVersion version = 0);
-
-/// \brief Writes \a customType via \a serializer.
-/// \remarks
-/// - If \tp Type is versioned, \a version is prepended to the data.
-/// - The specified \a version shall be passed to nested invocations.
+BinaryVersion readCustomType(BinaryDeserializer &deserializer, Type &customType);
 template <typename Type, Traits::EnableIf<IsCustomType<Type>> * = nullptr>
 void writeCustomType(BinarySerializer &serializer, const Type &customType, BinaryVersion version = 0);
 
-/// \brief The BinaryDeserializer class can read various data types, including custom ones, from an std::istream.
 class BinaryDeserializer : public CppUtilities::BinaryReader {
     friend class ::BinaryReflectorTests;
 
@@ -80,7 +67,6 @@ public:
     template <typename Type, Traits::EnableIf<Traits::IsSpecializationOf<Type, std::pair>> * = nullptr> void read(Type &pair);
     template <typename Type, Traits::EnableIf<Traits::IsSpecializationOf<Type, std::unique_ptr>> * = nullptr> void read(Type &pointer);
     template <typename Type, Traits::EnableIf<Traits::IsSpecializationOf<Type, std::shared_ptr>> * = nullptr> void read(Type &pointer);
-    template <typename Type, Traits::EnableIf<Traits::IsSpecializationOf<Type, std::optional>> * = nullptr> void read(Type &pointer);
     template <typename Type, Traits::EnableIf<IsArray<Type>, Traits::IsResizable<Type>> * = nullptr> void read(Type &iteratable);
     template <typename Type, Traits::EnableIfAny<IsMapOrHash<Type>, IsMultiMapOrHash<Type>> * = nullptr> void read(Type &iteratable);
     template <typename Type,
@@ -89,14 +75,12 @@ public:
     void read(Type &iteratable);
     template <typename Type, Traits::EnableIf<std::is_enum<Type>> * = nullptr> void read(Type &enumValue);
     template <typename Type, Traits::EnableIf<IsVariant<Type>> * = nullptr> void read(Type &variant);
-    template <typename Type, Traits::EnableIf<IsBuiltInType<Type>> * = nullptr> BinaryVersion read(Type &builtInType, BinaryVersion version);
-    template <typename Type, Traits::EnableIf<IsCustomType<Type>> * = nullptr> BinaryVersion read(Type &customType, BinaryVersion version = 0);
+    template <typename Type, Traits::EnableIf<IsCustomType<Type>> * = nullptr> BinaryVersion read(Type &customType);
 
 private:
     std::unordered_map<std::uint64_t, std::any> m_pointer;
 };
 
-/// \brief The BinarySerializer class can write various data types, including custom ones, to an std::ostream.
 class BinarySerializer : public CppUtilities::BinaryWriter {
     friend class ::BinaryReflectorTests;
 
@@ -105,8 +89,7 @@ public:
 
     using CppUtilities::BinaryWriter::write;
     template <typename Type, Traits::EnableIf<Traits::IsSpecializationOf<Type, std::pair>> * = nullptr> void write(const Type &pair);
-    template <typename Type, Traits::EnableIf<Traits::IsSpecializingAnyOf<Type, std::unique_ptr, std::optional>> * = nullptr>
-    void write(const Type &pointer);
+    template <typename Type, Traits::EnableIf<Traits::IsSpecializingAnyOf<Type, std::unique_ptr>> * = nullptr> void write(const Type &pointer);
     template <typename Type, Traits::EnableIf<Traits::IsSpecializingAnyOf<Type, std::shared_ptr>> * = nullptr> void write(const Type &pointer);
     template <typename Type, Traits::EnableIf<IsIteratableExceptString<Type>, Traits::HasSize<Type>> * = nullptr> void write(const Type &iteratable);
     template <typename Type, Traits::EnableIf<std::is_enum<Type>> * = nullptr> void write(const Type &enumValue);
@@ -163,16 +146,6 @@ template <typename Type, Traits::EnableIf<Traits::IsSpecializationOf<Type, std::
     }
 }
 
-template <typename Type, Traits::EnableIf<Traits::IsSpecializationOf<Type, std::optional>> *> void BinaryDeserializer::read(Type &opt)
-{
-    if (!readBool()) {
-        opt.reset();
-        return;
-    }
-    opt = std::make_optional<typename Type::value_type>();
-    read(*opt);
-}
-
 template <typename Type, Traits::EnableIf<IsArray<Type>, Traits::IsResizable<Type>> *> void BinaryDeserializer::read(Type &iteratable)
 {
     const auto size = readVariableLengthUIntBE();
@@ -239,15 +212,9 @@ template <typename Type, Traits::EnableIf<IsVariant<Type>> *> void BinaryDeseria
     Detail::readVariantValueByRuntimeIndex(readByte(), variant, *this);
 }
 
-template <typename Type, Traits::EnableIf<IsBuiltInType<Type>> *> BinaryVersion BinaryDeserializer::read(Type &builtInType, BinaryVersion version)
+template <typename Type, Traits::EnableIf<IsCustomType<Type>> *> BinaryVersion BinaryDeserializer::read(Type &customType)
 {
-    read(builtInType);
-    return version;
-}
-
-template <typename Type, Traits::EnableIf<IsCustomType<Type>> *> BinaryVersion BinaryDeserializer::read(Type &customType, BinaryVersion version)
-{
-    return readCustomType(*this, customType, version);
+    return readCustomType(*this, customType);
 }
 
 inline BinarySerializer::BinarySerializer(std::ostream *stream)
@@ -261,12 +228,12 @@ template <typename Type, Traits::EnableIf<Traits::IsSpecializationOf<Type, std::
     write(pair.second);
 }
 
-template <typename Type, Traits::EnableIf<Traits::IsSpecializingAnyOf<Type, std::unique_ptr, std::optional>> *>
-void BinarySerializer::write(const Type &opt)
+template <typename Type, Traits::EnableIf<Traits::IsSpecializingAnyOf<Type, std::unique_ptr>> *> void BinarySerializer::write(const Type &pointer)
 {
-    writeBool(static_cast<bool>(opt));
-    if (opt) {
-        write(*opt);
+    const bool hasValue = pointer != nullptr;
+    writeBool(hasValue);
+    if (hasValue) {
+        write(*pointer);
     }
 }
 

lib/binary/serializable.h

@@ -14,23 +14,20 @@
 
 namespace ReflectiveRapidJSON {
 
-using BinaryVersionNotSupported = VersionNotSupported<BinaryVersion>;
-
 /*!
  * \brief The BinarySerializable class provides the CRTP-base for (de)serializable objects.
  */
 template <typename Type, BinaryVersion v> struct BinarySerializable {
-    using VersionNotSupported = BinaryVersionNotSupported;
     void toBinary(std::ostream &outputStream, BinaryVersion version = 0) const;
     BinaryVersion restoreFromBinary(std::istream &inputStream);
     static Type fromBinary(std::istream &inputStream);
 
     static constexpr const char *qualifiedName = "ReflectiveRapidJSON::BinarySerializable";
     static constexpr auto version = v;
-
-#if __cplusplus > 201707L
-    bool operator==(const BinarySerializable<Type, v> &) const = default;
-#endif
+    static constexpr auto versioningEnabled(const BinarySerializable<Type, v> &)
+    {
+        return v != 0;
+    }
 };
 
 template <typename Type, BinaryVersion v> inline void BinarySerializable<Type, v>::toBinary(std::ostream &outputStream, BinaryVersion version) const
@@ -58,7 +55,8 @@ template <typename Type, BinaryVersion v> Type BinarySerializable<Type, v>::from
  *       Find out whether this is a compiler bug or a correct error message.
  */
 #define REFLECTIVE_RAPIDJSON_MAKE_BINARY_SERIALIZABLE(T)                                                                                             \
-    template <> struct ReflectiveRapidJSON::AdaptedBinarySerializable<T> : Traits::Bool<true> {}
+    template <> struct ReflectiveRapidJSON::AdaptedBinarySerializable<T> : Traits::Bool<true> {                                                      \
+    }
 
 } // namespace ReflectiveRapidJSON
 

lib/cmake/modules/ReflectionGenerator.cmake

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.17.0 FATAL_ERROR)
+cmake_minimum_required(VERSION 3.3.0 FATAL_ERROR)
 
 # prevent multiple inclusion
 if (DEFINED REFLECTION_GENERATOR_MODULE_LOADED)
@@ -44,10 +44,10 @@ if (NOT REFLECTION_GENERATOR_CLANG_RESOURCE_DIR)
             message(FATAL_ERROR "Unable to find the clang executable to determine Clang's resource directory")
         endif ()
     endif ()
-    execute_process(
-        COMMAND ${REFLECTION_GENERATOR_CLANG_BIN} -print-resource-dir
-        OUTPUT_VARIABLE REFLECTION_GENERATOR_CLANG_RESOURCE_DIR
-        OUTPUT_STRIP_TRAILING_WHITESPACE)
+    exec_program(
+        ${REFLECTION_GENERATOR_CLANG_BIN} ARGS
+        -print-resource-dir
+        OUTPUT_VARIABLE REFLECTION_GENERATOR_CLANG_RESOURCE_DIR)
 endif ()
 if (NOT REFLECTION_GENERATOR_CLANG_RESOURCE_DIR OR NOT IS_DIRECTORY "${REFLECTION_GENERATOR_CLANG_RESOURCE_DIR}")
     message(
@@ -87,7 +87,7 @@ endfunction ()
 include(CMakeParseArguments)
 function (add_reflection_generator_invocation)
     # parse arguments
-    set(OPTIONAL_ARGS ERROR_RESILIENT)
+    set(OPTIONAL_ARGS)
     set(ONE_VALUE_ARGS OUTPUT_DIRECTORY JSON_VISIBILITY BINARY_VISBILITY)
     set(MULTI_VALUE_ARGS
         INPUT_FILES
@@ -121,25 +121,30 @@ function (add_reflection_generator_invocation)
         list(APPEND ARGS_CLANG_OPTIONS -I "${INCLUDE_DIR}")
     endforeach ()
 
-    # avoid including headers from host when cross compiling
-    if (CMAKE_CROSSCOMPILING)
-        list(APPEND ARGS_CLANG_OPTIONS -nostdinc)
+    # add workaround for cross compiling with mingw-w64 to prevent host stdlib.h being included (not sure why specifying
+    # REFLECTION_GENERATOR_INCLUDE_DIRECTORIES is not enough to let it find this particular header file)
+    if (MINGW)
+        # find MinGW version of stdlib.h
+        find_file(MINGW_W64_STDLIB_H stdlib.h ${REFLECTION_GENERATOR_INCLUDE_DIRECTORIES})
+        if (NOT EXISTS "${MINGW_W64_STDLIB_H}")
+            message(
+                FATAL_ERROR
+                    "Unable to locate MinGW version of stdlib.h. Ensure it is in REFLECTION_GENERATOR_INCLUDE_DIRECTORIES.")
+        endif ()
+
+        # ensure libtooling includes the MinGW version of stdlib.h rather than the host version
+        list(APPEND ARGS_CLANG_OPTIONS -include "${MINGW_W64_STDLIB_H}" -D_STDLIB_H # prevent processing of host stdlib.h
+        )
     endif ()
 
     # add options to be passed to clang from the specified targets
     if (ARGS_CLANG_OPTIONS_FROM_TARGETS)
         foreach (TARGET_NAME ${ARGS_CLANG_OPTIONS_FROM_TARGETS})
             # set c++ standard
-            list(
-                APPEND
-                ARGS_CLANG_OPTIONS
-                "$<$<BOOL:$<TARGET_PROPERTY:${TARGET_NAME},CXX_STANDARD>>:-std=c++$<TARGET_PROPERTY:${TARGET_NAME},CXX_STANDARD>>"
-            )
-            # add compile flags and options
+            list(APPEND ARGS_CLANG_OPTIONS "-std=c++$<TARGET_PROPERTY:${TARGET_NAME},CXX_STANDARD>")
+            # add compile flags
             _reflective_rapidjson_set_prop("${TARGET_NAME}" COMPILE_FLAGS)
             list(APPEND ARGS_CLANG_OPTIONS "$<$<BOOL:${PROP}>:$<JOIN:${PROP},$<SEMICOLON>>>")
-            _reflective_rapidjson_set_prop("${TARGET_NAME}" COMPILE_OPTIONS)
-            list(APPEND ARGS_CLANG_OPTIONS "$<$<BOOL:${PROP}>:$<JOIN:${PROP},$<SEMICOLON>>>")
             # add compile definitions
             _reflective_rapidjson_set_prop("${TARGET_NAME}" COMPILE_DEFINITIONS)
             list(APPEND ARGS_CLANG_OPTIONS "$<$<BOOL:${PROP}>:-D$<JOIN:${PROP},$<SEMICOLON>-D>>")
@@ -190,9 +195,6 @@ function (add_reflection_generator_invocation)
         if (ARGS_BINARY_VISBILITY)
             list(APPEND CLI_ARGUMENTS --binary-visibility "${ARGS_BINARY_VISBILITY}")
         endif ()
-        if (ARGS_ERROR_RESILIENT)
-            list(APPEND CLI_ARGUMENTS --error-resilient)
-        endif ()
         add_custom_command(
             OUTPUT "${OUTPUT_FILE}"
             COMMAND "${REFLECTION_GENERATOR_EXECUTABLE}" ARGS ${CLI_ARGUMENTS}

lib/include/reflective_rapidjson/versioning.h

@@ -1 +0,0 @@
-../../versioning.h

lib/json/errorhandling.h

@@ -155,7 +155,6 @@ struct JsonDeserializationErrors : public std::vector<JsonDeserializationError>
     JsonDeserializationErrors();
 
     template <typename ExpectedType> void reportTypeMismatch(RAPIDJSON_NAMESPACE::Type presentType);
-    template <RAPIDJSON_NAMESPACE::Type expectedType> void reportTypeMismatch(RAPIDJSON_NAMESPACE::Type presentType);
     void reportArraySizeMismatch();
     void reportConversionError(JsonType jsonType);
     void reportUnexpectedDuplicate(JsonType jsonType);
@@ -221,16 +220,6 @@ template <typename ExpectedType> inline void JsonDeserializationErrors::reportTy
     throwMaybe(ThrowOn::TypeMismatch);
 }
 
-/*!
- * \brief Reports a type mismatch between \tparam expectedType and \a presentType within the current context.
- */
-template <RAPIDJSON_NAMESPACE::Type expectedType> inline void JsonDeserializationErrors::reportTypeMismatch(RAPIDJSON_NAMESPACE::Type presentType)
-{
-    emplace_back(
-        JsonDeserializationErrorKind::TypeMismatch, jsonType(expectedType), jsonType(presentType), currentRecord, currentMember, currentIndex);
-    throwMaybe(ThrowOn::TypeMismatch);
-}
-
 /*!
  * \brief Reports an array size mismatch.
  * \todo Allow specifying expected and actual size.

lib/json/reflector.h

@@ -19,13 +19,11 @@
 #include <limits>
 #include <map>
 #include <memory>
-#include <optional>
 #include <set>
 #include <string>
 #include <tuple>
 #include <unordered_map>
 #include <unordered_set>
-#include <utility>
 #include <variant>
 
 #include "./errorhandling.h"
@@ -83,8 +81,9 @@ inline RAPIDJSON_NAMESPACE::Document parseJsonDocFromString(const char *json, st
 // define traits to distinguish between "built-in" types like int, std::string, std::vector, ... and custom structs/classes
 template <typename Type>
 using IsBuiltInType = Traits::Any<std::is_integral<Type>, std::is_floating_point<Type>, std::is_pointer<Type>, std::is_enum<Type>,
-    Traits::IsSpecializingAnyOf<Type, std::tuple, std::pair>, Traits::IsIteratable<Type>,
-    Traits::IsSpecializingAnyOf<Type, std::unique_ptr, std::shared_ptr, std::weak_ptr, std::optional>, IsVariant<Type>>;
+    Traits::IsSpecializationOf<Type, std::tuple>, Traits::IsSpecializationOf<Type, std::pair>, Traits::IsIteratable<Type>,
+    Traits::IsSpecializationOf<Type, std::unique_ptr>, Traits::IsSpecializationOf<Type, std::shared_ptr>,
+    Traits::IsSpecializationOf<Type, std::weak_ptr>, IsVariant<Type>>;
 template <typename Type> using IsCustomType = Traits::Not<IsBuiltInType<Type>>;
 
 // define trait to check for custom structs/classes which are JSON serializable
@@ -148,24 +147,12 @@ inline void push(const Type &reflectable, RAPIDJSON_NAMESPACE::Value &value, RAP
 /*!
  * \brief Pushes the specified integer/float/boolean to the specified value.
  */
-template <typename Type,
-    Traits::EnableIfAny<
-        Traits::All<std::is_integral<Type>, Traits::Not<std::is_same<Type, std::uint8_t>>, Traits::Not<std::is_same<Type, std::int8_t>>>,
-        std::is_floating_point<Type>> * = nullptr>
+template <typename Type, Traits::EnableIfAny<std::is_integral<Type>, std::is_floating_point<Type>> * = nullptr>
 inline void push(Type reflectable, RAPIDJSON_NAMESPACE::Value &value, RAPIDJSON_NAMESPACE::Document::AllocatorType &allocator)
 {
     value.Set(reflectable, allocator);
 }
 
-/*!
- * \brief Pushes the specified 8-bit integer to the specified value.
- */
-template <typename Type, Traits::EnableIfAny<std::is_same<Type, std::uint8_t>, std::is_same<Type, std::int8_t>> * = nullptr>
-inline void push(Type reflectable, RAPIDJSON_NAMESPACE::Value &value, RAPIDJSON_NAMESPACE::Document::AllocatorType &allocator)
-{
-    value.Set(static_cast<int>(reflectable), allocator);
-}
-
 /*!
  * \brief Pushes the specified enumeration item to the specified value.
  */
@@ -319,10 +306,11 @@ void push(const Type &reflectable, RAPIDJSON_NAMESPACE::Value &value, RAPIDJSON_
 }
 
 /*!
- * \brief Pushes the specified unique_ptr, shared_ptr, weak_ptr or optional to the specified value.
+ * \brief Pushes the specified unique_ptr, shared_ptr or weak_ptr to the specified value.
  */
 template <typename Type,
-    Traits::EnableIfAny<Traits::IsSpecializingAnyOf<Type, std::unique_ptr, std::shared_ptr, std::weak_ptr, std::optional>> * = nullptr>
+    Traits::EnableIfAny<Traits::IsSpecializationOf<Type, std::unique_ptr>, Traits::IsSpecializationOf<Type, std::shared_ptr>,
+        Traits::IsSpecializationOf<Type, std::weak_ptr>> * = nullptr>
 void push(const Type &reflectable, RAPIDJSON_NAMESPACE::Value &value, RAPIDJSON_NAMESPACE::Document::AllocatorType &allocator)
 {
     if (!reflectable) {
@@ -491,12 +479,6 @@ void pull(Type &reflectable, const rapidjson::GenericValue<RAPIDJSON_NAMESPACE::
 template <typename Type, Traits::EnableIf<Traits::IsSpecializationOf<Type, std::shared_ptr>> * = nullptr>
 void pull(Type &reflectable, const rapidjson::GenericValue<RAPIDJSON_NAMESPACE::UTF8<char>> &value, JsonDeserializationErrors *errors);
 
-/*!
- * \brief Pulls the specified \a reflectable which is an std::optional from the specified value which might be null.
- */
-template <typename Type, Traits::EnableIf<Traits::IsSpecializationOf<Type, std::optional>> * = nullptr>
-void pull(Type &reflectable, const rapidjson::GenericValue<RAPIDJSON_NAMESPACE::UTF8<char>> &value, JsonDeserializationErrors *errors);
-
 /*!
  * \brief Pulls the specified \a reflectable which is a variant from the specified value which might be null.
  */
@@ -529,8 +511,7 @@ void pull(Type &reflectable, const RAPIDJSON_NAMESPACE::GenericValue<RAPIDJSON_N
  * \brief Pulls the integer or float from the specified value which is supposed and checked to contain the right type.
  */
 template <typename Type,
-    Traits::EnableIf<Traits::Not<std::is_same<Type, bool>>, Traits::Not<std::is_same<Type, std::uint8_t>>,
-        Traits::Not<std::is_same<Type, std::int8_t>>, Traits::Any<std::is_integral<Type>, std::is_floating_point<Type>>> * = nullptr>
+    Traits::EnableIf<Traits::Not<std::is_same<Type, bool>>, Traits::Any<std::is_integral<Type>, std::is_floating_point<Type>>> * = nullptr>
 inline void pull(
     Type &reflectable, const RAPIDJSON_NAMESPACE::GenericValue<RAPIDJSON_NAMESPACE::UTF8<char>> &value, JsonDeserializationErrors *errors)
 {
@@ -543,20 +524,6 @@ inline void pull(
     reflectable = value.Is<Type>() ? value.Get<Type>() : static_cast<Type>(value.GetDouble());
 }
 
-/*!
- * \brief Pulls the integer or float from the specified value which is supposed and checked to contain the right type.
- */
-template <typename Type, Traits::EnableIfAny<std::is_same<Type, std::uint8_t>, std::is_same<Type, std::int8_t>> * = nullptr>
-inline void pull(
-    Type &reflectable, const RAPIDJSON_NAMESPACE::GenericValue<RAPIDJSON_NAMESPACE::UTF8<char>> &value, JsonDeserializationErrors *errors)
-{
-    int i = 0;
-    pull(i, value, errors);
-    if (value.IsNumber()) {
-        reflectable = static_cast<Type>(i);
-    }
-}
-
 /*!
  * \brief Pulls the boolean from the specified value which is supposed and checked to contain the right type.
  */
@@ -701,7 +668,7 @@ void pull(Type &reflectable, rapidjson::GenericValue<RAPIDJSON_NAMESPACE::UTF8<c
         ++index;
         typename Type::value_type itemObj;
         pull(itemObj, item, errors);
-        reflectable.emplace(std::move(itemObj));
+        reflectable.emplace(move(itemObj));
     }
 
     // clear error context
@@ -729,7 +696,7 @@ void pull(Type &reflectable, rapidjson::GenericValue<RAPIDJSON_NAMESPACE::UTF8<c
         ++index;
         typename Type::value_type itemObj;
         pull(itemObj, item, errors);
-        if (!reflectable.emplace(std::move(itemObj)).second) {
+        if (!reflectable.emplace(move(itemObj)).second) {
             errors->reportUnexpectedDuplicate(JsonType::Array);
         }
     }
@@ -882,20 +849,6 @@ void pull(Type &reflectable, const rapidjson::GenericValue<RAPIDJSON_NAMESPACE::
     pull(*reflectable, value, errors);
 }
 
-/*!
- * \brief Pulls the specified \a reflectable which is an std::optional from the specified value which might be null.
- */
-template <typename Type, Traits::EnableIf<Traits::IsSpecializationOf<Type, std::optional>> *>
-void pull(Type &reflectable, const rapidjson::GenericValue<RAPIDJSON_NAMESPACE::UTF8<char>> &value, JsonDeserializationErrors *errors)
-{
-    if (value.IsNull()) {
-        reflectable.reset();
-        return;
-    }
-    reflectable = std::make_optional<typename Type::value_type>();
-    pull(*reflectable, value, errors);
-}
-
 /// \cond
 namespace Detail {
 template <typename Variant, std::size_t compiletimeIndex = 0>
@@ -982,7 +935,7 @@ inline void pull(Type &reflectable, const char *name, const rapidjson::GenericVa
     }
 
     // set error context for current member
-    const char *previousMember = nullptr;
+    const char *previousMember;
     if (errors) {
         previousMember = errors->currentMember;
         errors->currentMember = name;

lib/json/serializable.h

@@ -31,10 +31,6 @@ template <typename Type> struct JsonSerializable {
     static Type fromJson(const std::string &json, JsonDeserializationErrors *errors = nullptr);
 
     static constexpr const char *qualifiedName = "ReflectiveRapidJSON::JsonSerializable";
-
-#if __cplusplus > 201707L
-    bool operator==(const JsonSerializable<Type> &) const = default;
-#endif
 };
 
 /*!
@@ -120,7 +116,8 @@ const JsonSerializable<Type> &as(const Type &serializable)
  *       Find out whether this is a compiler bug or a correct error message.
  */
 #define REFLECTIVE_RAPIDJSON_MAKE_JSON_SERIALIZABLE(T)                                                                                               \
-    template <> struct ReflectiveRapidJSON::AdaptedJsonSerializable<T> : Traits::Bool<true> {}
+    template <> struct ReflectiveRapidJSON::AdaptedJsonSerializable<T> : Traits::Bool<true> {                                                        \
+    }
 
 /*!
  * \def The REFLECTIVE_RAPIDJSON_PUSH_PRIVATE_MEMBERS macro enables serialization of private members.

lib/tests/binaryreflector.cpp

@@ -75,9 +75,8 @@ struct ObjectWithVariantsBinary : public BinarySerializable<ObjectWithVariantsBi
 namespace ReflectiveRapidJSON {
 namespace BinaryReflector {
 
-template <> BinaryVersion readCustomType<TestObjectBinary>(BinaryDeserializer &deserializer, TestObjectBinary &customType, BinaryVersion version)
+template <> BinaryVersion readCustomType<TestObjectBinary>(BinaryDeserializer &deserializer, TestObjectBinary &customType)
 {
-    CPP_UTILITIES_UNUSED(version)
     deserializer.read(customType.number);
     deserializer.read(customType.number2);
     deserializer.read(customType.numbers);
@@ -116,9 +115,8 @@ template <> void writeCustomType<TestObjectBinary>(BinarySerializer &serializer,
     serializer.write(customType.dateTime);
 }
 
-template <> BinaryVersion readCustomType<NestingArrayBinary>(BinaryDeserializer &deserializer, NestingArrayBinary &customType, BinaryVersion version)
+template <> BinaryVersion readCustomType<NestingArrayBinary>(BinaryDeserializer &deserializer, NestingArrayBinary &customType)
 {
-    CPP_UTILITIES_UNUSED(version)
     deserializer.read(customType.name);
     deserializer.read(customType.testObjects);
     return 0;
@@ -126,15 +124,12 @@ template <> BinaryVersion readCustomType<NestingArrayBinary>(BinaryDeserializer
 
 template <> void writeCustomType<NestingArrayBinary>(BinarySerializer &serializer, const NestingArrayBinary &customType, BinaryVersion version)
 {
-    CPP_UTILITIES_UNUSED(version)
     serializer.write(customType.name);
     serializer.write(customType.testObjects);
 }
 
-template <>
-BinaryVersion readCustomType<ObjectWithVariantsBinary>(BinaryDeserializer &deserializer, ObjectWithVariantsBinary &customType, BinaryVersion version)
+template <> BinaryVersion readCustomType<ObjectWithVariantsBinary>(BinaryDeserializer &deserializer, ObjectWithVariantsBinary &customType)
 {
-    CPP_UTILITIES_UNUSED(version)
     deserializer.read(customType.someVariant);
     deserializer.read(customType.anotherVariant);
     deserializer.read(customType.yetAnotherVariant);
@@ -170,7 +165,6 @@ class BinaryReflectorTests : public TestFixture {
     CPPUNIT_TEST(testSmallSharedPointer);
     CPPUNIT_TEST(testBigSharedPointer);
     CPPUNIT_TEST(testVariant);
-    CPPUNIT_TEST(testOptional);
     CPPUNIT_TEST_SUITE_END();
 
 public:
@@ -188,7 +182,6 @@ public:
     void testSmallSharedPointer();
     void testBigSharedPointer();
     void testVariant();
-    void testOptional();
 
 private:
     vector<unsigned char> m_buffer;
@@ -273,44 +266,13 @@ void BinaryReflectorTests::tearDown()
 {
 }
 
-static void setBuffer(std::stringstream &stream, unsigned char *buffer, std::size_t bufferSize)
-{
-#if defined(__GLIBCXX__) && !defined(_LIBCPP_VERSION)
-    stream.rdbuf()->pubsetbuf(reinterpret_cast<char *>(buffer), static_cast<std::streamsize>(bufferSize));
-#else
-    CPP_UTILITIES_UNUSED(stream)
-    CPP_UTILITIES_UNUSED(buffer)
-    CPP_UTILITIES_UNUSED(bufferSize)
-#endif
-}
-
-static void readBuffer(std::stringstream &stream, unsigned char *buffer, std::size_t bufferSize)
-{
-#if defined(__GLIBCXX__) && !defined(_LIBCPP_VERSION)
-    CPP_UTILITIES_UNUSED(stream)
-    CPP_UTILITIES_UNUSED(buffer)
-    CPP_UTILITIES_UNUSED(bufferSize)
-#else
-    stream.read(reinterpret_cast<char *>(buffer), static_cast<std::streamsize>(bufferSize));
-#endif
-}
-static void writeBuffer(std::stringstream &stream, unsigned char *buffer, std::size_t bufferSize)
-{
-#if defined(__GLIBCXX__) && !defined(_LIBCPP_VERSION)
-    stream.rdbuf()->pubsetbuf(reinterpret_cast<char *>(buffer), static_cast<std::streamsize>(bufferSize));
-#else
-    stream.write(reinterpret_cast<const char *>(buffer), static_cast<std::streamsize>(bufferSize));
-#endif
-}
-
 void BinaryReflectorTests::testSerializeSimpleStruct()
 {
     stringstream stream(ios_base::out | ios_base::binary);
     stream.exceptions(ios_base::failbit | ios_base::badbit);
     m_buffer.resize(m_expectedTestObj.size());
-    setBuffer(stream, m_buffer.data(), m_buffer.size());
+    stream.rdbuf()->pubsetbuf(reinterpret_cast<char *>(m_buffer.data()), static_cast<streamsize>(m_buffer.size()));
     m_testObj.toBinary(stream);
-    readBuffer(stream, m_buffer.data(), m_buffer.size());
 
     CPPUNIT_ASSERT_EQUAL(m_expectedTestObj, m_buffer);
 }
@@ -319,7 +281,7 @@ void BinaryReflectorTests::testDeserializeSimpleStruct()
 {
     stringstream stream(ios_base::in | ios_base::binary);
     stream.exceptions(ios_base::failbit | ios_base::badbit);
-    writeBuffer(stream, m_expectedTestObj.data(), m_expectedTestObj.size());
+    stream.rdbuf()->pubsetbuf(reinterpret_cast<char *>(m_expectedTestObj.data()), static_cast<streamsize>(m_expectedTestObj.size()));
     const auto deserialized(TestObjectBinary::fromBinary(stream));
     assertTestObject(deserialized);
 }
@@ -329,9 +291,8 @@ void BinaryReflectorTests::testSerializeNestedStruct()
     stringstream stream(ios_base::out | ios_base::binary);
     stream.exceptions(ios_base::failbit | ios_base::badbit);
     m_buffer.resize(m_expectedNestedTestObj.size());
-    setBuffer(stream, m_buffer.data(), m_buffer.size());
+    stream.rdbuf()->pubsetbuf(reinterpret_cast<char *>(m_buffer.data()), static_cast<streamsize>(m_buffer.size()));
     m_nestedTestObj.toBinary(stream);
-    readBuffer(stream, m_buffer.data(), m_buffer.size());
 
     CPPUNIT_ASSERT_EQUAL(m_expectedNestedTestObj, m_buffer);
 }
@@ -340,7 +301,7 @@ void BinaryReflectorTests::testDeserializeNestedStruct()
 {
     stringstream stream(ios_base::in | ios_base::binary);
     stream.exceptions(ios_base::failbit | ios_base::badbit);
-    writeBuffer(stream, m_expectedNestedTestObj.data(), m_expectedNestedTestObj.size());
+    stream.rdbuf()->pubsetbuf(reinterpret_cast<char *>(m_expectedNestedTestObj.data()), static_cast<streamsize>(m_expectedNestedTestObj.size()));
 
     const auto deserialized(NestingArrayBinary::fromBinary(stream));
     CPPUNIT_ASSERT_EQUAL(m_nestedTestObj.name, deserialized.name);
@@ -425,28 +386,3 @@ void BinaryReflectorTests::testVariant()
     CPPUNIT_ASSERT_EQUAL("foo"s, get<0>(deserializedVariants.anotherVariant));
     CPPUNIT_ASSERT_EQUAL(42, get<1>(deserializedVariants.yetAnotherVariant));
 }
-
-void BinaryReflectorTests::testOptional()
-{
-    // create test objects
-    const auto str = std::make_optional<std::string>("foo");
-    const auto nullStr = std::optional<std::string>();
-
-    // serialize test object
-    auto stream = std::stringstream(std::ios_base::in | std::ios_base::out | std::ios_base::binary);
-    stream.exceptions(std::ios_base::failbit | std::ios_base::badbit);
-    auto ser = BinaryReflector::BinarySerializer(&stream);
-    ser.write(str);
-    ser.write(nullStr);
-
-    // deserialize the object again
-    auto deser = BinaryReflector::BinaryDeserializer(&stream);
-    auto deserStr = std::optional<std::string>();
-    auto deserNullStr = std::optional<std::string>();
-    deser.read(deserStr);
-    deser.read(deserNullStr);
-
-    CPPUNIT_ASSERT(deserStr.has_value());
-    CPPUNIT_ASSERT_EQUAL("foo"s, deserStr.value());
-    CPPUNIT_ASSERT(!nullStr.has_value());
-}

lib/tests/jsonreflector.cpp

@@ -112,7 +112,7 @@ template <> inline void push<NestingArray>(const NestingArray &reflectable, Valu
 template <>
 inline void pull<TestObject>(TestObject &reflectable, const GenericValue<UTF8<char>>::ConstObject &value, JsonDeserializationErrors *errors)
 {
-    const char *previousRecord = nullptr;
+    const char *previousRecord;
     if (errors) {
         previousRecord = errors->currentRecord;
         errors->currentRecord = "TestObject";
@@ -141,7 +141,7 @@ inline void pull<TestObject>(TestObject &reflectable, const GenericValue<UTF8<ch
 template <>
 inline void pull<NestingObject>(NestingObject &reflectable, const GenericValue<UTF8<char>>::ConstObject &value, JsonDeserializationErrors *errors)
 {
-    const char *previousRecord = nullptr;
+    const char *previousRecord;
     if (errors) {
         previousRecord = errors->currentRecord;
         errors->currentRecord = "NestingObject";
@@ -156,7 +156,7 @@ inline void pull<NestingObject>(NestingObject &reflectable, const GenericValue<U
 template <>
 inline void pull<NestingArray>(NestingArray &reflectable, const GenericValue<UTF8<char>>::ConstObject &value, JsonDeserializationErrors *errors)
 {
-    const char *previousRecord = nullptr;
+    const char *previousRecord;
     if (errors) {
         previousRecord = errors->currentRecord;
         errors->currentRecord = "NestingArray";
@@ -186,13 +186,11 @@ class JsonReflectorTests : public TestFixture {
     CPPUNIT_TEST(testSerializeNestedObjects);
     CPPUNIT_TEST(testSerializeUniquePtr);
     CPPUNIT_TEST(testSerializeSharedPtr);
-    CPPUNIT_TEST(testSerializeOptional);
     CPPUNIT_TEST(testDeserializePrimitives);
     CPPUNIT_TEST(testDeserializeSimpleObjects);
     CPPUNIT_TEST(testDeserializeNestedObjects);
     CPPUNIT_TEST(testDeserializeUniquePtr);
     CPPUNIT_TEST(testDeserializeSharedPtr);
-    CPPUNIT_TEST(testDeserializeOptional);
     CPPUNIT_TEST(testHandlingParseError);
     CPPUNIT_TEST(testHandlingTypeMismatch);
     CPPUNIT_TEST_SUITE_END();
@@ -207,13 +205,11 @@ public:
     void testSerializeNestedObjects();
     void testSerializeUniquePtr();
     void testSerializeSharedPtr();
-    void testSerializeOptional();
     void testDeserializePrimitives();
     void testDeserializeSimpleObjects();
     void testDeserializeNestedObjects();
     void testDeserializeUniquePtr();
     void testDeserializeSharedPtr();
-    void testDeserializeOptional();
     void testHandlingParseError();
     void testHandlingTypeMismatch();
 
@@ -383,28 +379,6 @@ void JsonReflectorTests::testSerializeSharedPtr()
         string(strbuf.GetString()));
 }
 
-/*!
- * \brief Tests serializing std::optional.
- */
-void JsonReflectorTests::testSerializeOptional()
-{
-    Document doc(kArrayType);
-    Document::AllocatorType &alloc = doc.GetAllocator();
-    doc.SetArray();
-    Document::Array array(doc.GetArray());
-
-    const auto str = make_optional<std::string>("foo");
-    const auto nullStr = std::optional<std::string>();
-
-    JsonReflector::push(str, array, alloc);
-    JsonReflector::push(nullStr, array, alloc);
-
-    StringBuffer strbuf;
-    Writer<StringBuffer> jsonWriter(strbuf);
-    doc.Accept(jsonWriter);
-    CPPUNIT_ASSERT_EQUAL("[\"foo\",null]"s, std::string(strbuf.GetString()));
-}
-
 /*!
  * \brief Tests deserializing strings, numbers (int, float, double) and boolean.
  */
@@ -543,9 +517,6 @@ void JsonReflectorTests::testDeserializeNestedObjects()
     CPPUNIT_ASSERT_EQUAL("test"s, nestedInVector[0].text);
 }
 
-/*!
- * \brief Tests deserializing std::optional.
- */
 void JsonReflectorTests::testDeserializeUniquePtr()
 {
     Document doc(kArrayType);
@@ -590,22 +561,6 @@ void JsonReflectorTests::testDeserializeSharedPtr()
     CPPUNIT_ASSERT_EQUAL("bar"s, obj->text);
 }
 
-void JsonReflectorTests::testDeserializeOptional()
-{
-    Document doc(kArrayType);
-    doc.Parse("[\"foo\",null]");
-    auto array = doc.GetArray().begin();
-
-    optional<string> str = "foo"s;
-    optional<string> nullStr;
-    JsonDeserializationErrors errors;
-    JsonReflector::pull(str, array, &errors);
-    CPPUNIT_ASSERT_EQUAL(0_st, errors.size());
-    CPPUNIT_ASSERT(str.has_value());
-    CPPUNIT_ASSERT_EQUAL("foo"s, *str);
-    CPPUNIT_ASSERT(!nullStr.has_value());
-}
-
 /*!
  * \brief Tests whether RAPIDJSON_NAMESPACE::ParseResult is thrown correctly when passing invalid JSON to fromJSON().
  */

lib/tests/traits.cpp

@@ -7,14 +7,20 @@
 #include <vector>
 
 // define structs for testing REFLECTIVE_RAPIDJSON_TREAT_AS_…
-struct Foo {};
-struct Bar {};
+struct Foo {
+};
+struct Bar {
+};
 
 // define structs for testing versioning
-struct VersionlessBase : public ReflectiveRapidJSON::BinarySerializable<VersionlessBase> {};
-struct VersionedDerived : public VersionlessBase, public ReflectiveRapidJSON::BinarySerializable<VersionedDerived, 1> {};
-struct VersionedBase : public ReflectiveRapidJSON::BinarySerializable<VersionlessBase, 1> {};
-struct VersionlessDerived : public VersionedBase, public ReflectiveRapidJSON::BinarySerializable<VersionlessDerived> {};
+struct VersionlessBase : public ReflectiveRapidJSON::BinarySerializable<VersionlessBase> {
+};
+struct VersionedDerived : public VersionlessBase, public ReflectiveRapidJSON::BinarySerializable<VersionedDerived, 1> {
+};
+struct VersionedBase : public ReflectiveRapidJSON::BinarySerializable<VersionlessBase, 1> {
+};
+struct VersionlessDerived : public VersionedBase, public ReflectiveRapidJSON::BinarySerializable<VersionlessDerived> {
+};
 
 namespace ReflectiveRapidJSON {
 REFLECTIVE_RAPIDJSON_TREAT_AS_MAP_OR_HASH(Foo);

lib/traits.h

@@ -16,22 +16,30 @@ namespace Traits = ::CppUtilities::Traits;
 
 // define structs and macros to allow treating custom data types as std::map, std::set, ...
 /// \brief \brief The TreatAsMapOrHash class allows treating custom classes as std::map or std::unordered_map.
-template <typename T> struct TreatAsMapOrHash : public Traits::Bool<false> {};
+template <typename T> struct TreatAsMapOrHash : public Traits::Bool<false> {
+};
 /// \brief \brief The TreatAsMultiMapOrHash class allows treating custom classes as std::multimap or std::unordered_multimap.
-template <typename T> struct TreatAsMultiMapOrHash : public Traits::Bool<false> {};
+template <typename T> struct TreatAsMultiMapOrHash : public Traits::Bool<false> {
+};
 /// \brief \brief The TreatAsSet class allows treating custom classes as std::set or std::unordered_set.
-template <typename T> struct TreatAsSet : public Traits::Bool<false> {};
+template <typename T> struct TreatAsSet : public Traits::Bool<false> {
+};
 /// \brief \brief The TreatAsMultiSet class allows treating custom classes as std::multiset or std::unordered_multiset.
-template <typename T> struct TreatAsMultiSet : public Traits::Bool<false> {};
+template <typename T> struct TreatAsMultiSet : public Traits::Bool<false> {
+};
 
 #define REFLECTIVE_RAPIDJSON_TREAT_AS_MAP_OR_HASH(T)                                                                                                 \
-    template <> struct TreatAsMapOrHash<T> : public Traits::Bool<true> {}
+    template <> struct TreatAsMapOrHash<T> : public Traits::Bool<true> {                                                                             \
+    }
 #define REFLECTIVE_RAPIDJSON_TREAT_AS_MULTI_MAP_OR_HASH(T)                                                                                           \
-    template <> struct TreatAsMultiMapOrHash<T> : public Traits::Bool<true> {}
+    template <> struct TreatAsMultiMapOrHash<T> : public Traits::Bool<true> {                                                                        \
+    }
 #define REFLECTIVE_RAPIDJSON_TREAT_AS_SET(T)                                                                                                         \
-    template <> struct TreatAsSet<T> : public Traits::Bool<true> {}
+    template <> struct TreatAsSet<T> : public Traits::Bool<true> {                                                                                   \
+    }
 #define REFLECTIVE_RAPIDJSON_TREAT_AS_MULTI_SET(T)                                                                                                   \
-    template <> struct TreatAsMultiSet<T> : public Traits::Bool<true> {}
+    template <> struct TreatAsMultiSet<T> : public Traits::Bool<true> {                                                                              \
+    }
 
 // define traits to check for arrays, sets and maps
 template <typename Type>

lib/versioning.h

@@ -25,11 +25,12 @@ public
 #endif
 
 CPP_UTILITIES_TRAITS_DEFINE_TYPE_CHECK(IsVersioned, T::version);
+//CPP_UTILITIES_TRAITS_DEFINE_TYPE_CHECK(IsVersioned, T::versioningEnabled(std::declval<T &>()));
 
-template <typename VersionType> struct VersionNotSupported {
-    VersionType presentVersion = 0, maxVersion = 0;
-    const char *record = nullptr;
-};
+//using BinaryVersion = std::uint64_t;
+
+//template <typename Type, BinaryVersion v = 0> struct BinarySerializable;
+//CPP_UTILITIES_TRAITS_DEFINE_TYPE_CHECK(IsVersioned, static_cast<T &>(std::declval<T &>()).version);
 
 template <typename Type, bool Condition = IsVersioned<Type>::value> struct Versioning {
     static constexpr auto enabled = false;
@@ -38,21 +39,10 @@ template <typename Type, bool Condition = IsVersioned<Type>::value> struct Versi
 template <typename Type> struct Versioning<Type, true> {
     static constexpr auto enabled = Type::version != 0;
     static constexpr auto serializationDefault = Type::version;
-    static constexpr auto maxSupported = Type::version;
     static constexpr auto applyDefault(decltype(serializationDefault) version)
     {
         return version ? version : serializationDefault;
     }
-    static constexpr auto isSupported(decltype(maxSupported) version)
-    {
-        return version <= maxSupported;
-    }
-    static constexpr auto assertVersion(decltype(maxSupported) version, const char *record = nullptr)
-    {
-        if (!isSupported(version)) {
-            throw typename Type::VersionNotSupported({ .presentVersion = version, .maxVersion = maxSupported, .record = record });
-        }
-    }
 };
 
 } // namespace ReflectiveRapidJSON