added endianness support

2026-06-18 13:19:11 +00:00 · 2017-07-24 16:08:33 +03:00
25 changed files with 1006 additions and 637 deletions
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -0,0 +1 @@
+#
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,23 +1,12 @@
 cmake_minimum_required(VERSION 3.2)

-set(PROJECT_NAME bitsery)
-set(TEST_PROJECT_NAME ${PROJECT_NAME}_tests)
-project(${PROJECT_NAME})
+project(bitsery)

-
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -g -O0 -fprofile-arcs -ftest-coverage")
-
-set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
-
-
-set(CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/ext)
-if(CMAKE_COMPILER_IS_GNUCXX)
-    #include(CodeCoverage)
-    #setup_target_for_coverage(${PROJECT_NAME}_coverage ${TEST_PROJECT_NAME} coverage)
-endif()
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall")
+set(CMAKE_CXX_STANDARD 14)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)

 add_subdirectory(examples)

-#add tests
 enable_testing()
 add_subdirectory(tests)
--- a/examples/CMakeLists.txt
+++ b/examples/CMakeLists.txt
@@ -25,14 +25,11 @@ cmake_minimum_required(VERSION 3.2)

 include_directories(${CMAKE_SOURCE_DIR}/include)

-file(GLOB EXAMPLE_FILES ${CMAKE_CURRENT_SOURCE_DIR}/*.cpp)
+file(GLOB ExampleFiles ${CMAKE_CURRENT_SOURCE_DIR}/*.cpp)

-FOREACH(EXAMPLE ${EXAMPLE_FILES})
-    get_filename_component(EXAMPLE_NAME ${EXAMPLE} NAME_WE)
-    add_executable(${EXAMPLE_NAME} ${EXAMPLE})
-
-    set_property(TARGET ${EXAMPLE_NAME} PROPERTY CXX_STANDARD 14)
-    set_property(TARGET ${EXAMPLE_NAME} PROPERTY CXX_STANDARD_REQUIRED ON)
+FOREACH(ExampleFile ${ExampleFiles})
+    get_filename_component(ExampleName ${ExampleFile} NAME_WE)
+    add_executable(${ExampleName} ${ExampleFile})

 ENDFOREACH()

--- a/ext/CodeCoverage.cmake
+++ b/ext/CodeCoverage.cmake
@@ -146,7 +146,8 @@ FUNCTION(SETUP_TARGET_FOR_COVERAGE _targetname _testrunner _outputname)

 		# Capturing lcov counters and generating report
 		COMMAND ${LCOV_PATH} --directory . --capture --output-file ${coverage_info}
-		COMMAND ${LCOV_PATH} --remove ${coverage_info} 'tests/*' '/usr/*' --output-file ${coverage_cleaned}
+			#extract only /include/bitsery directory
+		COMMAND ${LCOV_PATH} --extract ${coverage_info} '*include/bitsery*' --output-file ${coverage_cleaned}
 		COMMAND ${GENHTML_PATH} -o ${_outputname} ${coverage_cleaned}
 		COMMAND ${CMAKE_COMMAND} -E remove ${coverage_info} ${coverage_cleaned}

--- a/ext/LinkTestLIb.cmake
+++ b/ext/LinkTestLIb.cmake
@@ -0,0 +1,18 @@
+function(LinkTestLib TargetName)
+
+    add_dependencies(${TargetName} googletest)
+
+    if(NOT WIN32 OR MINGW)
+        FOREACH(LibName ${GTestLinkLibNames})
+            target_link_libraries(${TargetName} ${GTestLibsDir}/lib${LibName}.a )
+        ENDFOREACH()
+    else()
+        FOREACH(LibName ${GTestLinkLibNames})
+            target_link_libraries(${TargetName}
+                    debug ${GTestLibsDir}/DebugLibs/${CMAKE_FIND_LIBRARY_PREFIXES}${LibName}${CMAKE_FIND_LIBRARY_SUFFIXES}
+                    optimized ${GTestLibsDir}/ReleaseLibs/${CMAKE_FIND_LIBRARY_PREFIXES}${LibName}${CMAKE_FIND_LIBRARY_SUFFIXES})
+        ENDFOREACH()
+    endif()
+
+    target_link_libraries(${TargetName} ${CMAKE_THREAD_LIBS_INIT})
+endfunction(LinkTestLib)
--- a/ext/gtest/CMakeLists.txt
+++ b/ext/gtest/CMakeLists.txt
@@ -24,32 +24,32 @@ cmake_minimum_required(VERSION 3.2)
 project(gtest_builder C CXX)
 include(ExternalProject)

-set(GTEST_FORCE_SHARED_CRT ON)
-set(GTEST_DISABLE_PTHREADS OFF)
+set(ForceSharedCrt ON)
+set(DisablePThreads OFF)

 if(MINGW)
-    set(GTEST_DISABLE_PTHREADS ON)
+    set(DisablePThreads ON)
 endif()

-if (${USE_GMOCK})
+if (${UseGMock})
    message("use gmock")
-    set(BUILD_ARGS -DBUILD_GTEST=OFF -DBUILD_GMOCK=ON)
+    set(BuildArgs -DBUILD_GTEST=OFF -DBUILD_GMOCK=ON)
 else ()
    message("use gtest only")
-    set(BUILD_ARGS -DBUILD_GTEST=ON -DBUILD_GMOCK=OFF)
+    set(BuildArgs -DBUILD_GTEST=ON -DBUILD_GMOCK=OFF)
 endif()

 if (WIN32 AND NOT MINGW)
-    set(BUILD_ARGS ${BUILD_ARGS}
+    set(BuildArgs ${BuildArgs}
            -DCMAKE_ARCHIVE_OUTPUT_DIRECTORY_DEBUG:PATH=DebugLibs
            -DCMAKE_ARCHIVE_OUTPUT_DIRECTORY_RELEASE:PATH=ReleaseLibs)
 endif()

 ExternalProject_Add(googletest
        GIT_REPOSITORY https://github.com/google/googletest.git
-        CMAKE_ARGS ${BUILD_ARGS}
-        -Dgtest_force_shared_crt=${GTEST_FORCE_SHARED_CRT}
-        -Dgtest_disable_pthreads=${GTEST_DISABLE_PTHREADS}
+        CMAKE_ARGS ${BuildArgs}
+        -Dgtest_force_shared_crt=${ForceSharedCrt}
+        -Dgtest_disable_pthreads=${DisablePThreads}
        PREFIX "${CMAKE_CURRENT_BINARY_DIR}"
        # disable update command
        UPDATE_COMMAND ""
@@ -60,20 +60,20 @@ ExternalProject_Add(googletest
 #export variables
 ExternalProject_Get_Property(googletest source_dir)
 ExternalProject_Get_Property(googletest binary_dir)
-if (${USE_GMOCK})
+if (${UseGMock})
    # need to include both googletest and googlemock
-    set(GTEST_INCLUDE_DIRS ${source_dir}/googlemock/include ${source_dir}/googletest/include PARENT_SCOPE)
-    set(GTEST_LIBS_DIR ${binary_dir}/googlemock PARENT_SCOPE)
-    set(GTEST_LIBNAME gmock PARENT_SCOPE)
-    set(GTEST_MAIN_LIBNAME gmock_main PARENT_SCOPE)
-    set(GTEST_LINK_LIBNAMES gmock_main PARENT_SCOPE)
+    set(GTestIncludeDirs ${source_dir}/googlemock/include ${source_dir}/googletest/include PARENT_SCOPE)
+    set(GTestLibsDir ${binary_dir}/googlemock PARENT_SCOPE)
+    set(GTestLibName gmock PARENT_SCOPE)
+    set(GTestMainLibName gmock_main PARENT_SCOPE)
+    set(GTestLinkLibNames gmock_main PARENT_SCOPE)
 else()
-    set(GTEST_INCLUDE_DIRS ${source_dir}/googletest/include PARENT_SCOPE)
-    set(GTEST_LIBS_DIR ${binary_dir}/googletest PARENT_SCOPE)
-    set(GTEST_LIBNAME gtest PARENT_SCOPE)
-    set(GTEST_MAIN_LIBNAME gtest_main PARENT_SCOPE)
+    set(GTestIncludeDirs ${source_dir}/googletest/include PARENT_SCOPE)
+    set(GTestLibsDir ${binary_dir}/googletest PARENT_SCOPE)
+    set(GTestLibName gtest PARENT_SCOPE)
+    set(GTestMainLibName gtest_main PARENT_SCOPE)
    # need to include both libs gtest and gtest_main
-    set(GTEST_LINK_LIBNAMES gtest gtest_main PARENT_SCOPE)
+    set(GTestLinkLibNames gtest gtest_main PARENT_SCOPE)
 endif()


--- a/include/bitsery/buffer_reader.h
+++ b/include/bitsery/buffer_reader.h
@@ -32,27 +32,32 @@

 namespace bitsery {

-    struct BufferReader {
+    template <typename Config>
+    struct BasicBufferReader {
+        using ValueType = typename Config::BufferValueType;
+        using ScratchType = typename Config::BufferScrathType;

-        using value_type = uint8_t;
-
-        BufferReader(const std::vector<uint8_t> &buf) : _pos{buf.data()}, _end{buf.data() + buf.size()} {
-
-        }
-
-        BufferReader(const uint8_t* data, size_t size) : _pos{data}, _end{data + size}
+        BasicBufferReader(const ValueType* data, size_t size) : _pos{data}, _end{data + size}
        {
+            static_assert(std::is_unsigned<ValueType>(), "Config::BufferValueType must be unsigned");
+            static_assert(std::is_unsigned<ScratchType>(), "Config::BufferScrathType must be unsigned");
+            static_assert(sizeof(ValueType)*2 == sizeof(ScratchType), "ScratchType must be 2x bigger than value type");
+            static_assert(sizeof(ValueType) == 1, "currently only supported BufferValueType is 1 byte");
        }
+
+        explicit BasicBufferReader(const std::vector<ValueType> &buf) : BasicBufferReader(buf.data(), buf.size()) {
+        }
+
        template <size_t N>
-        BufferReader(const uint8_t (&data)[N]): _pos{data}, _end{data + N}
+        explicit BasicBufferReader(const ValueType (&data)[N]): BasicBufferReader(data, N)
        {
        }

-        BufferReader(const BufferReader&) = delete;
-        BufferReader& operator=(const BufferReader& ) = delete;
-        BufferReader(BufferReader&&) noexcept = default;
-        BufferReader& operator=(BufferReader&&) noexcept = default;
-        ~BufferReader() noexcept = default;
+        BasicBufferReader(const BasicBufferReader&) = delete;
+        BasicBufferReader& operator=(const BasicBufferReader& ) = delete;
+        BasicBufferReader(BasicBufferReader&&) noexcept = default;
+        BasicBufferReader& operator=(BasicBufferReader&&) noexcept = default;
+        ~BasicBufferReader() noexcept = default;


        template<size_t SIZE, typename T>
@@ -62,7 +67,7 @@ namespace bitsery {
            using UT = typename std::make_unsigned<T>::type;
            return !m_scratch
                   ? directRead(&v, 1)
-                   : readBits(reinterpret_cast<UT &>(v), BITS_SIZE<T>);
+                   : readBits(reinterpret_cast<UT &>(v), details::BITS_SIZE<T>);
        }

        template<size_t SIZE, typename T>
@@ -70,16 +75,15 @@ namespace bitsery {
            static_assert(std::is_integral<T>(), "");
            static_assert(sizeof(T) == SIZE, "");

-            if (!m_scratchBits) {
+            if (!m_scratchBits)
                return directRead(buf, count);
-            } else {
-                using UT = typename std::make_unsigned<T>::type;
-                //todo improve implementation
-                const auto end = buf + count;
-                for (auto it = buf; it != end; ++it) {
-                    if (!readBits(reinterpret_cast<UT &>(*it), BITS_SIZE<T>))
-                        return false;
-                }
+
+            using UT = typename std::make_unsigned<T>::type;
+            //todo improve implementation
+            const auto end = buf + count;
+            for (auto it = buf; it != end; ++it) {
+                if (!readBits(reinterpret_cast<UT &>(*it), details::BITS_SIZE<T>))
+                    return false;
            }
            return true;
        }
@@ -88,7 +92,7 @@ namespace bitsery {
        template<typename T>
        bool readBits(T &v, size_t bitsCount) {
            static_assert(std::is_integral<T>() && std::is_unsigned<T>(), "");
-            assert(bitsCount <= BITS_SIZE<T>);
+            assert(bitsCount <= details::BITS_SIZE<T>);

            const auto bytesRequired = bitsCount > m_scratchBits
                                       ? ((bitsCount - 1 - m_scratchBits) >> 3) + 1u
@@ -101,8 +105,8 @@ namespace bitsery {

        bool align() {
            if (m_scratchBits) {
-                SCRATCH_TYPE tmp{};
-                readBitsInternal(tmp, BITS_SIZE<value_type> - m_scratchBits);
+                ScratchType tmp{};
+                readBitsInternal(tmp, m_scratchBits);
                return tmp == 0;
            }
            return true;
@@ -113,8 +117,8 @@ namespace bitsery {
        }

    private:
-        const value_type* _pos;
-        const value_type* _end;
+        const ValueType* _pos;
+        const ValueType* _end;

        template<typename T>
        bool directRead(T *v, size_t count) {
@@ -122,28 +126,39 @@ namespace bitsery {
            const auto bytesCount = sizeof(T) * count;
            if (static_cast<size_t>(std::distance(_pos, _end)) < bytesCount)
                return false;
-            std::copy_n(_pos, bytesCount, reinterpret_cast<value_type *>(v));
+            //read from buffer, to data ptr,
+            std::copy_n(_pos, bytesCount, reinterpret_cast<ValueType *>(v));
            std::advance(_pos, bytesCount);
+            //swap each byte if nessesarry
+            _swapDataBits(v, count, std::integral_constant<bool,
+                    Config::NetworkEndianness != details::getSystemEndianness()>{});
            return true;
        }

+        template<typename T>
+        void _swapDataBits(T *v, size_t count, std::true_type) {
+            std::for_each(v, std::next(v, count), [this](T& v) { v = details::swap(v); });
+        }
+
+        template<typename T>
+        void _swapDataBits(T *v, size_t count, std::false_type) {
+            //empty function because no swap is required
+        }
+
        template<typename T>
        void readBitsInternal(T &v, size_t size) {
            auto bitsLeft = size;
            T res{};
            while (bitsLeft > 0) {
-                auto bits = std::min(bitsLeft, BITS_SIZE<value_type>);
+                auto bits = std::min(bitsLeft, details::BITS_SIZE<ValueType>);
                if (m_scratchBits < bits) {
-                    value_type tmp;
-
-                    std::copy_n(_pos, 1, reinterpret_cast<value_type *>(&tmp));
-                    std::advance(_pos, 1);
-
-                    m_scratch |= static_cast<SCRATCH_TYPE>(tmp) << m_scratchBits;
-                    m_scratchBits += BITS_SIZE<value_type>;
+                    ValueType tmp;
+                    directRead(&tmp, 1);
+                    m_scratch |= static_cast<ScratchType>(tmp) << m_scratchBits;
+                    m_scratchBits += details::BITS_SIZE<ValueType>;
                }
                auto shiftedRes =
-                        static_cast<T>(m_scratch & ((static_cast<SCRATCH_TYPE>(1) << bits) - 1)) << (size - bitsLeft);
+                        static_cast<T>(m_scratch & ((static_cast<ScratchType>(1) << bits) - 1)) << (size - bitsLeft);
                res |= shiftedRes;
                m_scratch >>= bits;
                m_scratchBits -= bits;
@@ -152,13 +167,12 @@ namespace bitsery {
            v = res;
        }

-        using SCRATCH_TYPE = typename BIGGER_TYPE<value_type>::type;
-
-        SCRATCH_TYPE m_scratch{};
+        ScratchType m_scratch{};
        size_t m_scratchBits{};                                    ///< Number of bits currently in the scratch buffer. If the user wants to read more bits than this, we have to go fetch another dword from memory.

    };
-
+    //helper type
+    using BufferReader = BasicBufferReader<DefaultConfig>;
 }

 #endif //BITSERY_BUFFER_READER_H
--- a/include/bitsery/buffer_writer.h
+++ b/include/bitsery/buffer_writer.h
@@ -29,6 +29,7 @@
 #include <cassert>
 #include <algorithm>
 #include <iterator>
+#include <utility>

 namespace bitsery {

@@ -38,13 +39,13 @@ namespace bitsery {
        void writeBytes(const T &) {
            static_assert(std::is_integral<T>(), "");
            static_assert(sizeof(T) == SIZE, "");
-            _bitsCount += BITS_SIZE<T>;
+            _bitsCount += details::BITS_SIZE<T>;
        }

        template<typename T>
        void writeBits(const T &, size_t bitsCount) {
            static_assert(std::is_integral<T>() && std::is_unsigned<T>(), "");
-            assert(bitsCount <= BITS_SIZE<T>);
+            assert(bitsCount <= details::BITS_SIZE<T>);
            _bitsCount += bitsCount;
        }

@@ -52,7 +53,7 @@ namespace bitsery {
        void writeBuffer(const T *, size_t count) {
            static_assert(std::is_integral<T>(), "");
            static_assert(sizeof(T) == SIZE, "");
-            _bitsCount += BITS_SIZE<T> * count;
+            _bitsCount += details::BITS_SIZE<T> * count;
        }

        //get size in bytes
@@ -65,30 +66,34 @@ namespace bitsery {

    };

+    template <typename Config>
+    struct BasicBufferWriter {
+        using ValueType = typename Config::BufferValueType;
+        using ScratchType = typename Config::BufferScrathType;

-    struct BufferWriter {
-        using value_type = uint8_t;
-
-        explicit BufferWriter(std::vector<uint8_t> &buffer) : _buf{buffer}, _outIt{std::back_inserter(buffer)} {
-            static_assert(std::is_unsigned<value_type>::value, "");
+        explicit BasicBufferWriter(std::vector<ValueType> &buffer) : _outIt{std::back_inserter(buffer)} {
+            static_assert(std::is_unsigned<ValueType>(), "Config::BufferValueType must be unsigned");
+            static_assert(std::is_unsigned<ScratchType>(), "Config::BufferScrathType must be unsigned");
+            static_assert(sizeof(ValueType)*2 == sizeof(ScratchType), "ScratchType must be 2x bigger than value type");
+            static_assert(sizeof(ValueType) == 1, "currently only supported BufferValueType is 1 byte");
        }

-        BufferWriter(const BufferWriter&) = delete;
-        BufferWriter& operator=(const BufferWriter& ) = delete;
-        BufferWriter(BufferWriter&&) noexcept = default;
-        BufferWriter& operator=(BufferWriter&&) noexcept = default;
-        ~BufferWriter() noexcept = default;
+        BasicBufferWriter(const BasicBufferWriter&) = delete;
+        BasicBufferWriter& operator=(const BasicBufferWriter& ) = delete;
+        BasicBufferWriter(BasicBufferWriter&&) noexcept = default;
+        BasicBufferWriter& operator=(BasicBufferWriter&&) noexcept = default;
+        ~BasicBufferWriter() noexcept = default;

        template<size_t SIZE, typename T>
        void writeBytes(const T &v) {
            static_assert(std::is_integral<T>(), "");
            static_assert(sizeof(T) == SIZE, "");

-            if (!m_scratchBits) {
+            if (!_scratchBits) {
                directWrite(&v, 1);
            } else {
                using UT = typename std::make_unsigned<T>::type;
-                writeBits(reinterpret_cast<const UT &>(v), BITS_SIZE<T>);
+                writeBits(reinterpret_cast<const UT &>(v), details::BITS_SIZE<T>);
            }
        }

@@ -96,36 +101,36 @@ namespace bitsery {
        void writeBuffer(const T *buf, size_t count) {
            static_assert(std::is_integral<T>(), "");
            static_assert(sizeof(T) == SIZE, "");
-            if (!m_scratchBits) {
+            if (!_scratchBits) {
                directWrite(buf, count);
            } else {
                using UT = typename std::make_unsigned<T>::type;
                //todo improve implementation
                const auto end = buf + count;
                for (auto it = buf; it != end; ++it)
-                    writeBits(reinterpret_cast<const UT &>(*it), BITS_SIZE<T>);
+                    writeBits(reinterpret_cast<const UT &>(*it), details::BITS_SIZE<T>);
            }
        }

        template<typename T>
        void writeBits(const T &v, size_t bitsCount) {
            static_assert(std::is_integral<T>() && std::is_unsigned<T>(), "");
-            assert(bitsCount <= BITS_SIZE<T>);
+            assert(0 < bitsCount && bitsCount <= details::BITS_SIZE<T>);
            assert(v <= ((1ULL << bitsCount) - 1));
            writeBitsInternal(v, bitsCount);
        }

        void align() {
-            if (m_scratchBits)
-                writeBitsInternal(value_type{}, BITS_SIZE<value_type> - m_scratchBits);
+            if (_scratchBits)
+                writeBitsInternal(ValueType{}, details::BITS_SIZE<ValueType> - _scratchBits);
        }

        void flush() {
-            if (m_scratchBits) {
-                auto tmp = static_cast<value_type>( m_scratch & bufTypeMask );
+            if (_scratchBits) {
+                auto tmp = static_cast<ValueType>( _scratch & _MASK );
                directWrite(&tmp, 1);
-                m_scratch >>= m_scratchBits;
-                m_scratchBits -= m_scratchBits;
+                _scratch >>= _scratchBits;
+                _scratchBits -= _scratchBits;
            }
        }

@@ -133,57 +138,68 @@ namespace bitsery {
    private:

        template<typename T>
-        void directWrite(const T *v, size_t count) {
-            const auto bytesSize = sizeof(T) * count;
-            const auto pos = _buf.size();
-            _buf.resize(pos + bytesSize);
-            std::copy_n(reinterpret_cast<const value_type *>(v), bytesSize, _buf.data() + pos);
+        void directWrite(T&& v, size_t count) {
+            _directWriteSwapTag(std::forward<T>(v), count, std::integral_constant<bool,
+                    Config::NetworkEndianness != details::getSystemEndianness()>{});
+        }
+
+        template<typename T>
+        void _directWriteSwapTag(const T *v, size_t count, std::true_type) {
+            std::for_each(v, std::next(v, count), [this](const T& v) {
+                const auto res = details::swap(v);
+                std::copy_n(reinterpret_cast<const ValueType*>(&res), sizeof(T), _outIt);
+            });
+        }
+
+        template<typename T>
+        void _directWriteSwapTag(const T *v, size_t count, std::false_type) {
+            std::copy_n(reinterpret_cast<const ValueType*>(v), count * sizeof(T), _outIt);
        }

        template<typename T>
        void writeBitsInternal(const T &v, size_t size) {
+            constexpr size_t valueSize = details::BITS_SIZE<ValueType>;
            auto value = v;
            auto bitsLeft = size;
            while (bitsLeft > 0) {
-                auto bits = std::min(bitsLeft, BITS_SIZE<value_type>);
-                m_scratch |= static_cast<SCRATCH_TYPE>( value ) << m_scratchBits;
-                m_scratchBits += bits;
-                if (m_scratchBits >= BITS_SIZE<value_type>) {
-                    auto tmp = static_cast<value_type>(m_scratch & bufTypeMask);
+                auto bits = std::min(bitsLeft, valueSize);
+                _scratch |= static_cast<ScratchType>( value ) << _scratchBits;
+                _scratchBits += bits;
+                if (_scratchBits >= valueSize) {
+                    auto tmp = static_cast<ValueType>(_scratch & _MASK);
                    directWrite(&tmp, 1);
-                    m_scratch >>= BITS_SIZE<value_type>;
-                    m_scratchBits -= BITS_SIZE<value_type>;
+                    _scratch >>= valueSize;
+                    _scratchBits -= valueSize;

-                    value >>= BITS_SIZE<value_type>;
+                    value >>= valueSize;
                }
                bitsLeft -= bits;
            }
        }
-        void writeBitsInternal(const value_type &v, size_t size) {
+
+        //overload for ValueType, for better performance
+        void writeBitsInternal(const ValueType &v, size_t size) {
            if (size > 0) {
-                m_scratch |= static_cast<SCRATCH_TYPE>( v ) << m_scratchBits;
-                m_scratchBits += size;
-                if (m_scratchBits >= BITS_SIZE<value_type>) {
-                    auto tmp = static_cast<value_type>(m_scratch & bufTypeMask);
+                _scratch |= static_cast<ScratchType>( v ) << _scratchBits;
+                _scratchBits += size;
+                if (_scratchBits >= details::BITS_SIZE<ValueType>) {
+                    auto tmp = static_cast<ValueType>(_scratch & _MASK);
                    directWrite(&tmp, 1);
-                    m_scratch >>= BITS_SIZE<value_type>;
-                    m_scratchBits -= BITS_SIZE<value_type>;
+                    _scratch >>= details::BITS_SIZE<ValueType>;
+                    _scratchBits -= details::BITS_SIZE<ValueType>;
                }
            }
        }


-        const value_type bufTypeMask = 0xFF;
-        using SCRATCH_TYPE = typename BIGGER_TYPE<value_type>::type;
-        std::vector<value_type> &_buf;
-        std::back_insert_iterator<std::vector<value_type>> _outIt;
-        SCRATCH_TYPE m_scratch{};
-        size_t m_scratchBits{};
-
-
-        //size_t _bufSize{};
-
+        const ValueType _MASK = std::numeric_limits<ValueType>::max();
+        std::back_insert_iterator<std::vector<ValueType>> _outIt;
+        ScratchType _scratch{};
+        size_t _scratchBits{};
    };
+
+    //helper type
+    using BufferWriter = BasicBufferWriter<DefaultConfig>;
 }

 #endif //BITSERY_BUFFER_WRITER_H
--- a/include/bitsery/common.h
+++ b/include/bitsery/common.h
@@ -21,215 +21,27 @@
 //SOFTWARE.


-
 #ifndef BITSERY_COMMON_H
 #define BITSERY_COMMON_H

-#include <cstdint>
+#include "bitsery/details/buffer_common.h"

 namespace bitsery {

-    template<typename T>
-    constexpr size_t BITS_SIZE = sizeof(T) << 3;
-
-    template<typename T>
-    struct BIGGER_TYPE {
+    struct DefaultConfig {
+        static constexpr EndiannessType NetworkEndianness = EndiannessType::LittleEndian;
+        using BufferValueType = uint8_t;
+        using BufferScrathType = uint16_t;
    };

-    template<>
-    struct BIGGER_TYPE<uint8_t> {
-        typedef uint16_t type;
-    };
-
-    template<>
-    struct BIGGER_TYPE<uint16_t> {
-        typedef uint32_t type;
-    };
-
-    template<>
-    struct BIGGER_TYPE<uint32_t> {
-        typedef uint64_t type;
-    };
-
-    template<>
-    struct BIGGER_TYPE<int8_t> {
-        typedef int16_t type;
-    };
-
-    template<>
-    struct BIGGER_TYPE<int16_t> {
-        typedef int32_t type;
-    };
-
-    template<>
-    struct BIGGER_TYPE<int32_t> {
-        typedef int64_t type;
-    };
-
-    template<>
-    struct BIGGER_TYPE<char> {
-        typedef int16_t type;
-    };
-
-
-    template<typename T, typename Enable = void>
-    struct SAME_SIZE_UNSIGNED_TYPE {
-        typedef std::make_unsigned_t<T> type;
-    };
-
-    template<typename T>
-    struct SAME_SIZE_UNSIGNED_TYPE<T, typename std::enable_if<std::is_enum<T>::value>::type> {
-        typedef std::make_unsigned_t<std::underlying_type_t<T>> type;
-    };
-
-    template<typename T>
-    struct SAME_SIZE_UNSIGNED_TYPE<T, typename std::enable_if<std::is_floating_point<T>::value>::type> {
-        typedef std::conditional_t<std::is_same<T, float>::value, uint32_t, uint64_t> type;
-    };
-
-    template<typename T>
-    using SAME_SIZE_UNSIGNED = typename SAME_SIZE_UNSIGNED_TYPE<T>::type;
-
-
-    template<size_t SIZE>
-    struct ProcessAnyType {
-        template<typename S, typename T>
-        static void serialize(S &s, T &&v) {
-            s.template value<SIZE>(std::forward<T>(v));
-        }
-    };
-
-    template<>
-    struct ProcessAnyType<0> {
-        template<typename S, typename T>
-        static void serialize(S &s, T &&v) {
-            s.object(std::forward<T>(v));
-        }
-    };
+/*
+ * serializer macro, serialize function specialization that accepts T& and const T&
+ */


 #define SERIALIZE(ObjectType) \
 template <typename S, typename T, typename std::enable_if<std::is_same<T, ObjectType>::value || std::is_same<T, const ObjectType>::value>::type* = nullptr> \
 S& serialize(S& s, T& o)

-/*
- * range functions
- */
-
-    template<typename T>
-    constexpr size_t calcRequiredBits(T min, T max) {
-        size_t res{};
-        for (auto diff = max - min; diff > 0; diff >>= 1)
-            ++res;
-        return res;
-    }
-
-
-    template<typename T, typename Enable = void>
-    struct RangeSpec {
-
-        constexpr RangeSpec(T minValue, T maxValue)
-                : min{minValue},
-                  max{maxValue},
-                  bitsRequired{calcRequiredBits(min, max)} {
-        }
-
-        const T min;
-        const T max;
-        const size_t bitsRequired;
-    };
-
-
-    template<typename T>
-    struct RangeSpec<T, typename std::enable_if<std::is_enum<T>::value>::type> {
-
-        constexpr RangeSpec(T minValue, T maxValue) :
-                min{minValue},
-                max{maxValue},
-                bitsRequired{calcRequiredBits(
-                        static_cast<std::underlying_type_t<T>>(min),
-                        static_cast<std::underlying_type_t<T>>(max))} {
-        }
-
-        const T min;
-        const T max;
-        const size_t bitsRequired;
-    };
-
-//this class is used to make default RangeSpec float specialization always prefer constructor with precision
-    struct BitsConstraint {
-        explicit constexpr BitsConstraint(size_t bits) : value{bits} {}
-
-        const size_t value;
-    };
-
-    template<typename T>
-    struct RangeSpec<T, typename std::enable_if<std::is_floating_point<T>::value>::type> {
-
-        constexpr RangeSpec(T minValue, T maxValue, BitsConstraint bits) :
-                min{minValue},
-                max{maxValue},
-                bitsRequired{bits.value} {
-        }
-
-        constexpr RangeSpec(T minValue, T maxValue, T precision) :
-                min{minValue},
-                max{maxValue},
-                bitsRequired{calcRequiredBits<SAME_SIZE_UNSIGNED<T>>({}, ((max - min) / precision))} {
-
-        }
-
-        const T min;
-        const T max;
-        const size_t bitsRequired;
-    };
-
-    template<typename T, typename std::enable_if<std::is_arithmetic<T>::value>::type * = nullptr>
-    bool isRangeValid(const T &v, const RangeSpec<T> &r) {
-        return !(r.min > v || v > r.max);
-    }
-
-    template<typename T, typename std::enable_if<std::is_enum<T>::value>::type * = nullptr>
-    bool isRangeValid(const T &v, const RangeSpec<T> &r) {
-        using VT = std::underlying_type_t<T>;
-        return !(static_cast<VT>(r.min) > static_cast<VT>(v)
-                 || static_cast<VT>(v) > static_cast<VT>(r.max));
-    }
-
-/*
- * delta functions
- */
-
-    class ObjectMemoryPosition {
-    public:
-
-        template<typename T>
-        ObjectMemoryPosition(const T &oldObj, const T &newObj)
-                :ObjectMemoryPosition{reinterpret_cast<const char *>(&oldObj), reinterpret_cast<const char *>(&newObj),
-                                      sizeof(T)} {
-        }
-
-        template<typename T>
-        bool isFieldsEquals(const T &newObjField) {
-            return *getOldObjectField(newObjField) == newObjField;
-        }
-
-        template<typename T>
-        const T *getOldObjectField(const T &field) {
-            auto offset = reinterpret_cast<const char *>(&field) - newObj;
-            return reinterpret_cast<const T *>(oldObj + offset);
-        }
-
-    private:
-
-        ObjectMemoryPosition(const char *objOld, const char *objNew, size_t)
-                : oldObj{objOld},
-                  newObj{objNew} {
-        }
-
-        const char *oldObj;
-        const char *newObj;
-    };
-
 }
 #endif //BITSERY_COMMON_H
--- a/include/bitsery/delta_deserializer.h
+++ b/include/bitsery/delta_deserializer.h
@@ -40,7 +40,7 @@ namespace bitsery {
                  _reader{r},
                  _oldObj{oldObj},
                  _newObj{newObj},
-                  _objMemPos(std::deque<ObjectMemoryPosition>(1, ObjectMemoryPosition{oldObj, newObj})),
+                  _objMemPos(std::deque<details::ObjectMemoryPosition>(1, details::ObjectMemoryPosition{oldObj, newObj})),
                  _isNewElement{false} {
        };

@@ -134,7 +134,7 @@ namespace bitsery {

        const TObj &_oldObj;
        const TObj &_newObj;
-        std::stack<ObjectMemoryPosition> _objMemPos;
+        std::stack<details::ObjectMemoryPosition> _objMemPos;
        bool _isNewElement;

        template<typename T>
@@ -173,7 +173,7 @@ namespace bitsery {
                    *p = *pOld;
                    --offset;
                } else {
-                    _objMemPos.emplace(ObjectMemoryPosition{*pOld, *p});
+                    _objMemPos.emplace(details::ObjectMemoryPosition{*pOld, *p});
                    fnc(*this, *p);
                    _objMemPos.pop();
                    offset = readIndexOffset();
--- a/include/bitsery/delta_serializer.h
+++ b/include/bitsery/delta_serializer.h
@@ -40,7 +40,7 @@ namespace bitsery {
                  _writter{w},
                  _oldObj{oldObj},
                  _newObj{newObj},
-                  _objMemPos(std::deque<ObjectMemoryPosition>(1, ObjectMemoryPosition{oldObj, newObj})),
+                  _objMemPos(std::deque<details::ObjectMemoryPosition>(1, details::ObjectMemoryPosition{oldObj, newObj})),
                  _isNewElement{false} {

        };
@@ -132,7 +132,7 @@ namespace bitsery {
        Writter &_writter;
        const TObj &_oldObj;
        const TObj &_newObj;
-        std::stack<ObjectMemoryPosition> _objMemPos;
+        std::stack<details::ObjectMemoryPosition> _objMemPos;
        bool _isNewElement;

        template<typename T>
@@ -170,7 +170,7 @@ namespace bitsery {
            auto lastChanged = begin;
            while (misMatch.first != oldEnd && misMatch.second != end) {
                writeIndexOffset(std::distance(lastChanged, misMatch.second));
-                _objMemPos.emplace(ObjectMemoryPosition{*misMatch.first, *misMatch.second});
+                _objMemPos.emplace(details::ObjectMemoryPosition{*misMatch.first, *misMatch.second});
                fnc(*this, *misMatch.second);
                _objMemPos.pop();
                ++misMatch.first;
@@ -183,7 +183,7 @@ namespace bitsery {
            writeIndexOffset(std::distance(lastChanged, end));
            //write old elements
            for (auto pOld = misMatch.first; p != end && pOld != oldEnd; ++p, ++pOld) {
-                _objMemPos.emplace(ObjectMemoryPosition{*pOld, *p});
+                _objMemPos.emplace(details::ObjectMemoryPosition{*pOld, *p});
                fnc(*this, *p);
                _objMemPos.pop();
            }
--- a/include/bitsery/deserializer.h
+++ b/include/bitsery/deserializer.h
@@ -25,33 +25,11 @@
 #define BITSERY_DESERIALIZER_H

 #include "common.h"
-#include <array>
+#include "details/serialization_common.h"
 #include <utility>

 namespace bitsery {

-    /*
-     * functions for range
-     */
-    template<typename T, typename std::enable_if<std::is_integral<T>::value>::type* = nullptr>
-    void setRangeValue(T& v, const RangeSpec<T>& r) {
-        v += r.min;
-    };
-
-    template<typename T, typename std::enable_if<std::is_enum<T>::value>::type* = nullptr>
-    void setRangeValue(T& v, const RangeSpec<T>& r) {
-        using VT = std::underlying_type_t<T>;
-        reinterpret_cast<VT&>(v) += static_cast<VT>(r.min);
-    };
-
-    template<typename T, typename std::enable_if<std::is_floating_point<T>::value>::type* = nullptr>
-    void setRangeValue(T& v, const RangeSpec<T>& r) {
-        using UIT = SAME_SIZE_UNSIGNED<T>;
-        const auto intRep = reinterpret_cast<UIT&>(v);
-        const UIT maxUint = (static_cast<UIT>(1) << r.bitsRequired) - 1;
-        v = r.min + (static_cast<T>(intRep) / maxUint) * (r.max - r.min);
-    };
-

    template<typename Reader>
    class Deserializer {
@@ -63,6 +41,7 @@ namespace bitsery {
            return serialize(*this, std::forward<T>(obj));
        }

+        //in c++17 change "class" to typename
        template <template <typename> class Extension, typename TValue, typename Fnc>
        Deserializer& ext(TValue& v, Fnc&& fnc) {
            static_assert(!std::is_const<TValue>(), "");
@@ -79,7 +58,7 @@ namespace bitsery {
        Deserializer& value(T& v) {
            static_assert(std::numeric_limits<T>::is_iec559, "");
            if (_isValid) {
-                _isValid = _reader.template readBytes<VSIZE>(reinterpret_cast<SAME_SIZE_UNSIGNED<T>&>(v));
+                _isValid = _reader.template readBytes<VSIZE>(reinterpret_cast<details::SAME_SIZE_UNSIGNED<T>&>(v));
            }
            return *this;
        }
@@ -132,10 +111,10 @@ namespace bitsery {
        template <typename T>
        Deserializer& range(T& v, const RangeSpec<T>& range) {
            if (_isValid) {
-                _isValid = _reader.template readBits(reinterpret_cast<SAME_SIZE_UNSIGNED<T>&>(v), range.bitsRequired);
-                setRangeValue(v, range);
+                _isValid = _reader.readBits(reinterpret_cast<details::SAME_SIZE_UNSIGNED<T>&>(v), range.bitsRequired);
+                details::setRangeValue(v, range);
                if (_isValid)
-                    _isValid = isRangeValid(v, range);
+                    _isValid = details::isRangeValid(v, range);
            }
            return *this;
        }
@@ -192,15 +171,7 @@ namespace bitsery {
            readSize(size, maxSize);
            if (_isValid) {
                str.resize(size);
-                if (size) {
-                    //if (std::is_const<decltype(std::declval<std::basic_string<T>>().data())>::value) {
-                    std::vector<T> buf(size);
-                    _isValid = _reader.template readBuffer<VSIZE>(buf.data(), size);
-                    str.assign(buf.data(), size);
-                    //} else {
-                    //_isValid = _reader.template readBuffer<VSIZE>(str.data(), size);
-                    //}
-                }
+                procContainer<VSIZE>(std::begin(str), std::end(str), std::true_type{});
            }
            return *this;
        }
@@ -210,7 +181,9 @@ namespace bitsery {
            size_t size;
            readSize(size, N-1);
            if (_isValid) {
-                _isValid = _reader.template readBuffer<VSIZE>(str, size);
+                auto first = std::begin(str);
+                procContainer<VSIZE>(first, std::next(first, size), std::true_type{});
+                //null-terminated string
                str[size] = {};
            }
            return *this;
@@ -226,11 +199,7 @@ namespace bitsery {
            readSize(size, maxSize);
            if (_isValid) {
                obj.resize(size);
-                for (auto& v:obj) {
-                    if (_isValid)
-                        fnc(*this, v);
-                }
-
+                procContainer(std::begin(obj), std::end(obj), std::forward<Fnc>(fnc));
            }
            return *this;
        }
@@ -241,10 +210,7 @@ namespace bitsery {
            readSize(size, maxSize);
            if (_isValid) {
                obj.resize(size);
-                for (auto& v: obj) {
-                    if (_isValid)
-                        value<VSIZE>(v);
-                }
+                procContainer<VSIZE>(std::begin(obj), std::end(obj), std::false_type{});
            }
            return *this;
        }
@@ -255,10 +221,7 @@ namespace bitsery {
            readSize(size, maxSize);
            if (_isValid) {
                obj.resize(size);
-                for (auto& v: obj) {
-                    if (_isValid)
-                        object(v);
-                }
+                procContainer(std::begin(obj), std::end(obj));
            }
            return *this;
        }
@@ -271,27 +234,19 @@ namespace bitsery {

        template<typename T, size_t N, typename Fnc>
        Deserializer&  array(std::array<T,N> &arr, Fnc && fnc) {
-            for (auto& v: arr)
-                if (_isValid)
-                    fnc(*this, v);
+            procContainer(std::begin(arr), std::end(arr), std::forward<Fnc>(fnc));
            return *this;
        }

        template<size_t VSIZE, typename T, size_t N>
        Deserializer&  array(std::array<T,N> &arr) {
-            for (auto& v: arr) {
-                if (_isValid)
-                    value<VSIZE>(v);
-            }
+            procContainer<VSIZE>(std::begin(arr), std::end(arr), std::true_type{});
            return *this;
        }

        template<typename T, size_t N>
        Deserializer&  array(std::array<T,N> &arr) {
-            for (auto& v: arr) {
-                if (_isValid)
-                    object(v);
-            }
+            procContainer(std::begin(arr), std::end(arr));
            return *this;
        }

@@ -299,23 +254,19 @@ namespace bitsery {

        template<typename T, size_t N, typename Fnc>
        Deserializer& array(T (&arr)[N], Fnc&& fnc) {
-            T* end = arr + N;
-            for (T* it= arr; it != end; ++it) {
-                if (_isValid)
-                    fnc(*this, *it);
-            }
+            procContainer(std::begin(arr), std::end(arr), std::forward<Fnc>(fnc));
            return *this;
        }

        template<size_t VSIZE, typename T, size_t N>
        Deserializer& array(T (&arr)[N]) {
-            procCArray<VSIZE>(arr);
+            procContainer<VSIZE>(std::begin(arr), std::end(arr), std::true_type{});
            return *this;
        }

        template<typename T, size_t N>
        Deserializer& array(T (&arr)[N]) {
-            procCArray<0>(arr);
+            procContainer(std::begin(arr), std::end(arr));
            return *this;
        }
        bool isValid() const {
@@ -390,45 +341,34 @@ namespace bitsery {
            }
        }

-        template< size_t VSIZE, typename TIterator>
-        void procContainerValues(TIterator begin, TIterator end) {
-            for (auto it = begin; it != end; ++it) {
-                if (_isValid)
-                    value<VSIZE>(*it);
-            }
+        //process value types
+        //false_type means that we must process all elements individually
+        template<size_t VSIZE, typename It>
+        void procContainer(It first, It last, std::false_type) {
+            for (;_isValid && first != last; ++first)
+                value<VSIZE>(*first);
        };

-        template<typename TIterator>
-        void procContainerValues(TIterator begin, TIterator end) {
-            for (auto it = begin; it != end; ++it) {
-                if (_isValid)
-                    object(*it);
-            }
+        //process value types
+        //true_type means, that we can copy whole buffer
+        template<size_t VSIZE, typename It>
+        void procContainer(It first, It last, std::true_type) {
+            if (_isValid && first != last)
+                _isValid = _reader.template readBuffer<VSIZE>(&(*first), std::distance(first, last));
        };

-
-        template <size_t VSIZE, typename T>
-        void procContainer(T&& obj) {
-            //todo could be improved for arithmetic types in contiguous containers (std::vector, std::array) (keep in mind std::vector<bool> specialization)
-            for (auto& v: obj)
-                if (_isValid)
-                    ProcessAnyType<VSIZE>::serialize(*this, v);
+        //process by calling functions
+        template<typename It, typename Fnc>
+        void procContainer(It first, It last, Fnc fnc) {
+            for (;_isValid && first != last; ++first)
+                fnc(*this, *first);
        };

-        template <size_t VSIZE, typename T, size_t N>
-        void procCArray(T (&arr)[N]) {
-            //todo could be improved for arithmetic types
-            T* end = arr + N;
-            for (T* it = arr; it != end; ++it)
-                if (_isValid)
-                    ProcessAnyType<VSIZE>::serialize(*this, *it);
-        };
-
-        template <typename Iterator, typename Fnc>
-        void procCont(Iterator begin, Iterator end, Fnc&& fnc) {
-            for (Iterator it = begin; it != end; ++it)
-                if (_isValid)
-                    fnc(*it);
+        //process object types
+        template<typename It>
+        void procContainer(It first, It last) {
+            for (;_isValid && first != last; ++first)
+                object(*first);
        };

    };
--- a/include/bitsery/details/buffer_common.h
+++ b/include/bitsery/details/buffer_common.h
@@ -0,0 +1,96 @@
+//MIT License
+//
+//Copyright (c) 2017 Mindaugas Vinkelis
+//
+//Permission is hereby granted, free of charge, to any person obtaining a copy
+//of this software and associated documentation files (the "Software"), to deal
+//in the Software without restriction, including without limitation the rights
+//to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//copies of the Software, and to permit persons to whom the Software is
+//furnished to do so, subject to the following conditions:
+//
+//The above copyright notice and this permission notice shall be included in all
+//copies or substantial portions of the Software.
+//
+//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 AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+//SOFTWARE.
+
+#ifndef BITSERY_BUFFER_COMMON_H
+#define BITSERY_BUFFER_COMMON_H
+
+namespace bitsery {
+
+/*
+ * endianess
+ */
+    enum class EndiannessType {
+        LittleEndian,
+        BigEndian
+    };
+
+    namespace details {
+        template<typename T>
+        constexpr size_t BITS_SIZE = sizeof(T) << 3;
+
+        //add swap functions to class, to avoid compilation warning about unused functions
+        struct swapImpl {
+            static uint64_t exec(uint64_t value) {
+#ifdef __GNUC__
+                return __builtin_bswap64( value );
+#else
+                value = ( value & 0x00000000FFFFFFFF ) << 32 | ( value & 0xFFFFFFFF00000000 ) >> 32;
+            value = ( value & 0x0000FFFF0000FFFF ) << 16 | ( value & 0xFFFF0000FFFF0000 ) >> 16;
+            value = ( value & 0x00FF00FF00FF00FF ) << 8  | ( value & 0xFF00FF00FF00FF00 ) >> 8;
+            return value;
+#endif
+            }
+
+            static uint32_t exec(uint32_t value)
+            {
+#ifdef __GNUC__
+                return __builtin_bswap32( value );
+#else
+                return ( value & 0x000000ff ) << 24 | ( value & 0x0000ff00 ) << 8 | ( value & 0x00ff0000 ) >> 8 | ( value & 0xff000000 ) >> 24;
+#endif
+            }
+
+            static uint16_t exec(uint16_t value)
+            {
+                return ( value & 0x00ff ) << 8 | ( value & 0xff00 ) >> 8;
+            }
+
+            static uint8_t exec(uint8_t value) {
+                return value;
+            }
+        };
+
+        template <typename TValue>
+        TValue swap(TValue value) {
+            constexpr size_t TSize = sizeof(TValue);
+            using UT = typename std::conditional<TSize == 1, uint8_t,
+                    typename std::conditional<TSize == 2, uint16_t,
+                            typename std::conditional<TSize == 4, uint32_t , uint64_t>::type>::type>::type;
+            return swapImpl::exec(static_cast<UT>(value));
+        }
+
+        //add test data in separate struct, because some compilers only support constexpr functions with return-only body
+        struct EndiannessTestData {
+            static constexpr uint32_t _sample4Bytes = 0x01020304;
+            static constexpr uint8_t _sample1stByte = (const uint8_t&)_sample4Bytes;
+        };
+
+        constexpr EndiannessType getSystemEndianness() {
+            static_assert(EndiannessTestData::_sample1stByte == 0x04 || EndiannessTestData::_sample1stByte == 0x01, "system must be either little or big endian");
+            return EndiannessTestData::_sample1stByte == 0x04 ? EndiannessType::LittleEndian : EndiannessType::BigEndian;
+        }
+
+    }
+}
+
+
+#endif //BITSERY_BUFFER_COMMON_H
--- a/include/bitsery/details/serialization_common.h
+++ b/include/bitsery/details/serialization_common.h
@@ -0,0 +1,239 @@
+//MIT License
+//
+//Copyright (c) 2017 Mindaugas Vinkelis
+//
+//Permission is hereby granted, free of charge, to any person obtaining a copy
+//of this software and associated documentation files (the "Software"), to deal
+//in the Software without restriction, including without limitation the rights
+//to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//copies of the Software, and to permit persons to whom the Software is
+//furnished to do so, subject to the following conditions:
+//
+//The above copyright notice and this permission notice shall be included in all
+//copies or substantial portions of the Software.
+//
+//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 AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+//SOFTWARE.
+
+#ifndef BITSERY_SERIALIZATION_COMMON_H
+#define BITSERY_SERIALIZATION_COMMON_H
+
+#include <cstdint>
+#include <type_traits>
+#include <array>
+
+namespace bitsery {
+
+    namespace details {
+
+        template<typename T, typename Enable = void>
+        struct SAME_SIZE_UNSIGNED_TYPE {
+            typedef std::make_unsigned_t<T> type;
+        };
+
+        template<typename T>
+        struct SAME_SIZE_UNSIGNED_TYPE<T, typename std::enable_if<std::is_enum<T>::value>::type> {
+            typedef std::make_unsigned_t<std::underlying_type_t<T>> type;
+        };
+
+        template<typename T>
+        struct SAME_SIZE_UNSIGNED_TYPE<T, typename std::enable_if<std::is_floating_point<T>::value>::type> {
+            typedef std::conditional_t<std::is_same<T, float>::value, uint32_t, uint64_t> type;
+        };
+
+        template<typename T>
+        using SAME_SIZE_UNSIGNED = typename SAME_SIZE_UNSIGNED_TYPE<T>::type;
+
+        template <typename T>
+        constexpr size_t getSize(T v, size_t s) {
+            return v > 0 ? getSize(v / 2, s + 1) : s;
+        }
+
+        template<typename T>
+        constexpr size_t calcRequiredBits(T min, T max) {
+            //call recursive function, because some compilers only support constexpr functions with return-only body
+            return getSize(max - min, 0);
+        }
+
+    }
+
+/*
+ * range functions in bitsery namespace because these are used by user
+ */
+
+    template<typename T, typename Enable = void>
+    struct RangeSpec {
+
+        constexpr RangeSpec(T minValue, T maxValue)
+                : min{minValue},
+                  max{maxValue},
+                  bitsRequired{details::calcRequiredBits(min, max)} {
+        }
+
+        const T min;
+        const T max;
+        const size_t bitsRequired;
+    };
+
+
+    template<typename T>
+    struct RangeSpec<T, typename std::enable_if<std::is_enum<T>::value>::type> {
+
+        constexpr RangeSpec(T minValue, T maxValue) :
+                min{minValue},
+                max{maxValue},
+                bitsRequired{details::calcRequiredBits(
+                        static_cast<std::underlying_type_t<T>>(min),
+                        static_cast<std::underlying_type_t<T>>(max))} {
+        }
+
+        const T min;
+        const T max;
+        const size_t bitsRequired;
+    };
+
+//this class is used to make default RangeSpec float specialization always prefer constructor with precision
+    struct BitsConstraint {
+        explicit constexpr BitsConstraint(size_t bits) : value{bits} {}
+
+        const size_t value;
+    };
+
+    template<typename T>
+    struct RangeSpec<T, typename std::enable_if<std::is_floating_point<T>::value>::type> {
+
+        constexpr RangeSpec(T minValue, T maxValue, BitsConstraint bits) :
+                min{minValue},
+                max{maxValue},
+                bitsRequired{bits.value} {
+        }
+
+        constexpr RangeSpec(T minValue, T maxValue, T precision) :
+                min{minValue},
+                max{maxValue},
+                bitsRequired{details::calcRequiredBits<details::SAME_SIZE_UNSIGNED<T>>({}, ((max - min) / precision))} {
+
+        }
+
+        const T min;
+        const T max;
+        const size_t bitsRequired;
+    };
+
+    namespace details {
+
+/*
+ * functions for range
+ */
+
+        template<typename T, typename std::enable_if<std::is_integral<T>::value>::type * = nullptr>
+        auto getRangeValue(const T &v, const RangeSpec<T> &r) {
+            return static_cast<SAME_SIZE_UNSIGNED<T>>(v - r.min);
+        };
+
+        template<typename T, typename std::enable_if<std::is_enum<T>::value>::type * = nullptr>
+        auto getRangeValue(const T &v, const RangeSpec<T> &r) {
+            return static_cast<SAME_SIZE_UNSIGNED<T>>(v) - static_cast<SAME_SIZE_UNSIGNED<T>>(r.min);
+        };
+
+        template<typename T, typename std::enable_if<std::is_floating_point<T>::value>::type * = nullptr>
+        auto getRangeValue(const T &v, const RangeSpec<T> &r) {
+            using VT = SAME_SIZE_UNSIGNED<T>;
+            const VT maxUint = (static_cast<VT>(1) << r.bitsRequired) - 1;
+            const auto ratio = (v - r.min) / (r.max - r.min);
+            return static_cast<VT>(ratio * maxUint);
+        };
+
+        template<typename T, typename std::enable_if<std::is_integral<T>::value>::type* = nullptr>
+        void setRangeValue(T& v, const RangeSpec<T>& r) {
+            v += r.min;
+        };
+
+        template<typename T, typename std::enable_if<std::is_enum<T>::value>::type* = nullptr>
+        void setRangeValue(T& v, const RangeSpec<T>& r) {
+            using VT = std::underlying_type_t<T>;
+            reinterpret_cast<VT&>(v) += static_cast<VT>(r.min);
+        };
+
+        template<typename T, typename std::enable_if<std::is_floating_point<T>::value>::type* = nullptr>
+        void setRangeValue(T& v, const RangeSpec<T>& r) {
+            using UIT = SAME_SIZE_UNSIGNED<T>;
+            const auto intRep = reinterpret_cast<UIT&>(v);
+            const UIT maxUint = (static_cast<UIT>(1) << r.bitsRequired) - 1;
+            v = r.min + (static_cast<T>(intRep) / maxUint) * (r.max - r.min);
+        };
+
+        template<typename T, typename std::enable_if<std::is_arithmetic<T>::value>::type * = nullptr>
+        bool isRangeValid(const T &v, const RangeSpec<T> &r) {
+            return !(r.min > v || v > r.max);
+        }
+
+        template<typename T, typename std::enable_if<std::is_enum<T>::value>::type * = nullptr>
+        bool isRangeValid(const T &v, const RangeSpec<T> &r) {
+            using VT = std::underlying_type_t<T>;
+            return !(static_cast<VT>(r.min) > static_cast<VT>(v)
+                     || static_cast<VT>(v) > static_cast<VT>(r.max));
+        }
+
+/*
+ * functions for substitution
+ */
+
+        template<typename T, size_t N>
+        size_t findSubstitutionIndex(const T &v, const std::array<T, N> &defValues) {
+            auto index{1u};
+            for (auto &d:defValues) {
+                if (d == v)
+                    return index;
+                ++index;
+            }
+            return 0u;
+        };
+
+
+/*
+ * delta functions
+ */
+
+        class ObjectMemoryPosition {
+        public:
+
+            template<typename T>
+            ObjectMemoryPosition(const T &oldObj, const T &newObj)
+                    :ObjectMemoryPosition{reinterpret_cast<const char *>(&oldObj), reinterpret_cast<const char *>(&newObj),
+                                          sizeof(T)} {
+            }
+
+            template<typename T>
+            bool isFieldsEquals(const T &newObjField) {
+                return *getOldObjectField(newObjField) == newObjField;
+            }
+
+            template<typename T>
+            const T *getOldObjectField(const T &field) {
+                auto offset = reinterpret_cast<const char *>(&field) - newObj;
+                return reinterpret_cast<const T *>(oldObj + offset);
+            }
+
+        private:
+
+            ObjectMemoryPosition(const char *objOld, const char *objNew, size_t)
+                    : oldObj{objOld},
+                      newObj{objNew} {
+            }
+
+            const char *oldObj;
+            const char *newObj;
+        };
+
+
+    }
+
+}
+
+#endif //BITSERY_SERIALIZATION_COMMON_H
--- a/include/bitsery/serializer.h
+++ b/include/bitsery/serializer.h
@@ -27,49 +27,10 @@

 #include "common.h"
 #include <array>
+#include "details/serialization_common.h"

 namespace bitsery {

-/*
- * functions for range
- */
-
-    template<typename T, typename std::enable_if<std::is_integral<T>::value>::type * = nullptr>
-    auto getRangeValue(const T &v, const RangeSpec<T> &r) {
-        return static_cast<SAME_SIZE_UNSIGNED<T>>(v - r.min);
-    };
-
-    template<typename T, typename std::enable_if<std::is_enum<T>::value>::type * = nullptr>
-    auto getRangeValue(const T &v, const RangeSpec<T> &r) {
-        return static_cast<SAME_SIZE_UNSIGNED<T>>(v) - static_cast<SAME_SIZE_UNSIGNED<T>>(r.min);
-    };
-
-    template<typename T, typename std::enable_if<std::is_floating_point<T>::value>::type * = nullptr>
-    auto getRangeValue(const T &v, const RangeSpec<T> &r) {
-        using VT = SAME_SIZE_UNSIGNED<T>;
-        const VT maxUint = (static_cast<VT>(1) << r.bitsRequired) - 1;
-        const auto ratio = (v - r.min) / (r.max - r.min);
-        return static_cast<VT>(ratio * maxUint);
-    };
-
-/*
- * functions for substitution
- */
-
-    template<typename T, size_t N>
-    size_t findSubstitutionIndex(const T &v, const std::array<T, N> &defValues) {
-        auto index{1u};
-        for (auto &d:defValues) {
-            if (d == v)
-                return index;
-            ++index;
-        }
-        return 0u;
-    };
-
-
-
-
    template<typename Writter>
    class Serializer {
    public:
@@ -80,6 +41,7 @@ namespace bitsery {
            return serialize(*this, obj);
        }

+        //in c++17 change "class" to typename
        template <template <typename> class Extension, typename TValue, typename Fnc>
        Serializer& ext(const TValue& v, Fnc&& fnc ) {
            Extension<const TValue> ext{v};
@@ -95,7 +57,7 @@ namespace bitsery {
        template<size_t VSIZE, typename T, typename std::enable_if<std::is_floating_point<T>::value>::type * = nullptr>
        Serializer& value(const T &v) {
            static_assert(std::numeric_limits<T>::is_iec559, "");
-            _writter.template writeBytes<VSIZE>(reinterpret_cast<const SAME_SIZE_UNSIGNED<T> &>(v));
+            _writter.template writeBytes<VSIZE>(reinterpret_cast<const details::SAME_SIZE_UNSIGNED<T> &>(v));
            return *this;
        }

@@ -116,7 +78,7 @@ namespace bitsery {
         */

        Serializer& boolBit(bool v) {
-            _writter.template writeBits(static_cast<unsigned char>(v ? 1 : 0), 1);
+            _writter.writeBits(static_cast<unsigned char>(v ? 1 : 0), 1);
            return *this;
        }

@@ -131,8 +93,8 @@ namespace bitsery {

        template<typename T>
        Serializer& range(const T &v, const RangeSpec<T> &range) {
-            assert(isRangeValid(v, range));
-            _writter.template writeBits(getRangeValue(v, range), range.bitsRequired);
+            assert(details::isRangeValid(v, range));
+            _writter.template writeBits<decltype(details::getRangeValue(v, range))>(details::getRangeValue(v, range), range.bitsRequired);
            return *this;
        }

@@ -141,7 +103,7 @@ namespace bitsery {
         */
        template<typename T, size_t N, typename Fnc>
        Serializer& substitution(const T &v, const std::array<T, N> &expectedValues, Fnc &&fnc) {
-            auto index = findSubstitutionIndex(v, expectedValues);
+            auto index = details::findSubstitutionIndex(v, expectedValues);
            range(index, {{}, N +1});
            if (!index)
                fnc(*this, v);
@@ -150,7 +112,7 @@ namespace bitsery {

        template<size_t VSIZE, typename T, size_t N>
        Serializer& substitution(const T &v, const std::array<T, N> &expectedValues) {
-            auto index = findSubstitutionIndex(v, expectedValues);
+            auto index = details::findSubstitutionIndex(v, expectedValues);
            range(index, {{}, N +1});
            if (!index)
                value<VSIZE>(v);
@@ -159,7 +121,7 @@ namespace bitsery {

        template<typename T, size_t N>
        Serializer& substitution(const T &v, const std::array<T, N> &expectedValues) {
-            auto index = findSubstitutionIndex(v, expectedValues);
+            auto index = details::findSubstitutionIndex(v, expectedValues);
            range(index, {{}, N +1});
            if (!index)
                object(v);
@@ -173,13 +135,19 @@ namespace bitsery {
        template<size_t VSIZE, typename T>
        Serializer& text(const std::basic_string<T> &str, size_t maxSize) {
            assert(str.size() <= maxSize);
-            procText<VSIZE>(str.data(), str.size());
+            auto first = std::begin(str);
+            auto last = std::end(str);
+            writeSize(std::distance(first, last));
+            procContainer<VSIZE>(first, last, std::true_type{});
            return *this;
        }

        template<size_t VSIZE, typename T, size_t N>
        Serializer& text(const T (&str)[N]) {
-            procText<VSIZE>(str, std::min(std::char_traits<T>::length(str), N - 1));
+            auto first = std::begin(str);
+            auto last = std::next(first, std::min(std::char_traits<T>::length(str), N - 1));
+            writeSize(std::distance(first, last));
+            procContainer<VSIZE>(first, last, std::true_type{});
            return *this;
        }

@@ -191,8 +159,7 @@ namespace bitsery {
        Serializer& container(const T &obj, size_t maxSize, Fnc &&fnc) {
            assert(obj.size() <= maxSize);
            writeSize(obj.size());
-            for (auto &v: obj)
-                fnc(*this, v);
+            procContainer(std::begin(obj), std::end(obj), std::forward<Fnc>(fnc));
            return *this;
        }

@@ -201,7 +168,8 @@ namespace bitsery {
            static_assert(VSIZE > 0, "");
            assert(obj.size() <= maxSize);
            writeSize(obj.size());
-            procContainer<VSIZE>(obj);
+            //todo optimisation is possible for contigous containers, but currently there is no compile-time check for this
+            procContainer<VSIZE>(std::begin(obj), std::end(obj), std::false_type{});
            return *this;
        }

@@ -209,7 +177,7 @@ namespace bitsery {
        Serializer& container(const T &obj, size_t maxSize) {
            assert(obj.size() <= maxSize);
            writeSize(obj.size());
-            procContainer<0>(obj);
+            procContainer(std::begin(obj), std::end(obj));
            return *this;
        }

@@ -221,21 +189,20 @@ namespace bitsery {

        template<typename T, size_t N, typename Fnc>
        Serializer& array(const std::array<T, N> &arr, Fnc &&fnc) {
-            for (auto &v: arr)
-                fnc(*this, v);
+            procContainer(std::begin(arr), std::end(arr), std::forward<Fnc>(fnc));
            return *this;
        }

        template<size_t VSIZE, typename T, size_t N>
        Serializer& array(const std::array<T, N> &arr) {
            static_assert(VSIZE > 0, "");
-            procContainer<VSIZE>(arr);
+            procContainer<VSIZE>(std::begin(arr), std::end(arr), std::true_type{});
            return *this;
        }

        template<typename T, size_t N>
        Serializer& array(const std::array<T, N> &arr) {
-            procContainer<0>(arr);
+            procContainer(std::begin(arr), std::end(arr));
            return *this;
        }

@@ -243,22 +210,20 @@ namespace bitsery {

        template<typename T, size_t N, typename Fnc>
        Serializer& array(const T (&arr)[N], Fnc &&fnc) {
-            const T *end = arr + N;
-            for (const T *tmp = arr; tmp != end; ++tmp)
-                fnc(*this, *tmp);
+            procContainer(std::begin(arr), std::end(arr), std::forward<Fnc>(fnc));
            return *this;
        }

        template<size_t VSIZE, typename T, size_t N>
        Serializer& array(const T (&arr)[N]) {
            static_assert(VSIZE > 0, "");
-            procCArray<VSIZE>(arr);
+            procContainer<VSIZE>(std::begin(arr), std::end(arr), std::true_type{});
            return *this;
        }

        template<typename T, size_t N>
        Serializer& array(const T (&arr)[N]) {
-            procCArray<0>(arr);
+            procContainer(std::begin(arr), std::end(arr));
            return *this;
        }

@@ -329,27 +294,36 @@ namespace bitsery {
            }
        }

-        template<size_t VSIZE, typename T>
-        void procContainer(T &&obj) {
-            //todo could be improved for arithmetic types in contiguous containers (std::vector, std::array) (keep in mind std::vector<bool> specialization)
-            for (auto &v: obj)
-                ProcessAnyType<VSIZE>::serialize(*this, v);
+        //process value types
+        //false_type means that we must process all elements individually
+        template<size_t VSIZE, typename It>
+        void procContainer(It first, It last, std::false_type) {
+            for (;first != last; ++first)
+                value<VSIZE>(*first);
        };

-        template<size_t VSIZE, typename T, size_t N>
-        void procCArray(T (&arr)[N]) {
-            //todo could be improved for arithmetic types
-            const T *end = arr + N;
-            for (const T *it = arr; it != end; ++it)
-                ProcessAnyType<VSIZE>::serialize(*this, *it);
+        //process value types
+        //true_type means, that we can copy whole buffer
+        template<size_t VSIZE, typename It>
+        void procContainer(It first, It last, std::true_type) {
+            if (first != last)
+                _writter.template writeBuffer<VSIZE>(&(*first), std::distance(first, last));
+        };
+
+        //process by calling functions
+        template<typename It, typename Fnc>
+        void procContainer(It first, It last, Fnc fnc) {
+            for (;first != last; ++first)
+                fnc(*this, *first);
+        };
+
+        //process object types
+        template<typename It>
+        void procContainer(It first, It last) {
+            for (;first != last; ++first)
+                object(*first);
        };

-        template<size_t VSIZE, typename T>
-        void procText(const T *str, size_t size) {
-            writeSize(size);
-            if (size)
-                _writter.template writeBuffer<VSIZE>(str, size);
-        }
    };

 }
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -21,77 +21,54 @@
 #SOFTWARE.

 cmake_minimum_required(VERSION 3.2)
-project(${TEST_PROJECT_NAME} C CXX)
+set(TestProjectName bitsery_tests)
+project(${TestProjectName} C CXX)
+

 find_package(Threads REQUIRED)

 #add googletest external project
 #USE_GMOCK enable gmock
 #exports variables GTEST_INCLUDE_DIRS, GTEST_LIBS_DIR, GTEST_LIBNAME, GTEST_MAIN_LIBNAME
-set(EXT_PROJECTS_DIR ${CMAKE_SOURCE_DIR}/ext)
-set(USE_GMOCK ON)
-add_subdirectory(${EXT_PROJECTS_DIR}/gtest ${CMAKE_BINARY_DIR}/gtest)
+set(ExtCMakeFilesDir ${CMAKE_SOURCE_DIR}/ext)
+set(UseGMock ON)
+add_subdirectory(${ExtCMakeFilesDir}/gtest ${CMAKE_BINARY_DIR}/gtest)

+#this helps idea to know which files are actually used
+file(GLOB_RECURSE IncludeHeaders ${CMAKE_SOURCE_DIR}/include/bitsery/*.h)
 # set common include folder for module
-include_directories(SYSTEM ${GTEST_INCLUDE_DIRS})
+include_directories(SYSTEM ${GTestIncludeDirs})
 include_directories(${CMAKE_SOURCE_DIR}/include)

-file(GLOB TEST_SRC_FILES ${CMAKE_CURRENT_SOURCE_DIR}/*.cpp)
+file(GLOB TestSourceFiles ${CMAKE_CURRENT_SOURCE_DIR}/*.cpp)

-FOREACH(TEST_PROJECT_FILE ${TEST_SRC_FILES})
-    get_filename_component(SEPARATE_TEST_NAME ${TEST_PROJECT_FILE} NAME_WE)
-    set(SEPARATE_TEST_NAME TEST_${SEPARATE_TEST_NAME})
-    add_executable(${SEPARATE_TEST_NAME} ${TEST_PROJECT_FILE})
-    add_dependencies(${SEPARATE_TEST_NAME} googletest)
+if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC")
+    message(WARNING "extension tests for optional is disable for VS, because VS currenty doesn't have <optional>")
+    list(REMOVE_ITEM TestSourceFiles ${CMAKE_CURRENT_SOURCE_DIR}/serialization_ext_optional.cpp)
+endif()

-    set_property(TARGET ${SEPARATE_TEST_NAME} PROPERTY CXX_STANDARD 14)
-    set_property(TARGET ${SEPARATE_TEST_NAME} PROPERTY CXX_STANDARD_REQUIRED ON)
+include(${ExtCMakeFilesDir}/LinkTestLib.cmake)

+FOREACH(TestFile ${TestSourceFiles})
+    get_filename_component(TestName ${TestFile} NAME_WE)
+    set(TestName TEST_${TestName})
+    add_executable(${TestName} ${TestFile} ${IncludeHeaders})
+    LinkTestLib(${TestName})

-    if(NOT WIN32 OR MINGW)
-        FOREACH(LIBNAME ${GTEST_LINK_LIBNAMES})
-            target_link_libraries(${SEPARATE_TEST_NAME} ${GTEST_LIBS_DIR}/lib${LIBNAME}.a )
-        ENDFOREACH()
-    else()
-        FOREACH(LIBNAME ${GTEST_LINK_LIBNAMES})
-            target_link_libraries(${SEPARATE_TEST_NAME}
-                    debug ${GTEST_LIBS_DIR}/DebugLibs/${CMAKE_FIND_LIBRARY_PREFIXES}${LIBNAME}${CMAKE_FIND_LIBRARY_SUFFIXES}
-                    optimized ${GTEST_LIBS_DIR}/ReleaseLibs/${CMAKE_FIND_LIBRARY_PREFIXES}${LIBNAME}${CMAKE_FIND_LIBRARY_SUFFIXES})
-        ENDFOREACH()
-    endif()
-
-    target_link_libraries(${SEPARATE_TEST_NAME} ${CMAKE_THREAD_LIBS_INIT})
-
-    add_test(NAME ${SEPARATE_TEST_NAME} COMMAND $<TARGET_FILE:${SEPARATE_TEST_NAME}>)
+    add_test(NAME ${TestName} COMMAND $<TARGET_FILE:${TestName}>)

 ENDFOREACH()

 #all in one tests for code coverage
-add_executable(${TEST_PROJECT_NAME} ${TEST_SRC_FILES})
-add_dependencies(${TEST_PROJECT_NAME} googletest)
+add_executable(${TestProjectName} ${TestSourceFiles})

-set_property(TARGET ${TEST_PROJECT_NAME} PROPERTY CXX_STANDARD 14)
-set_property(TARGET ${TEST_PROJECT_NAME} PROPERTY CXX_STANDARD_REQUIRED ON)
-
-
-if(NOT WIN32 OR MINGW)
-    FOREACH(LIBNAME ${GTEST_LINK_LIBNAMES})
-        target_link_libraries(${TEST_PROJECT_NAME} ${GTEST_LIBS_DIR}/lib${LIBNAME}.a )
-    ENDFOREACH()
-else()
-    FOREACH(LIBNAME ${GTEST_LINK_LIBNAMES})
-        target_link_libraries(${TEST_PROJECT_NAME}
-                debug ${GTEST_LIBS_DIR}/DebugLibs/${CMAKE_FIND_LIBRARY_PREFIXES}${LIBNAME}${CMAKE_FIND_LIBRARY_SUFFIXES}
-                optimized ${GTEST_LIBS_DIR}/ReleaseLibs/${CMAKE_FIND_LIBRARY_PREFIXES}${LIBNAME}${CMAKE_FIND_LIBRARY_SUFFIXES})
-    ENDFOREACH()
+if(CMAKE_COMPILER_IS_GNUCXX)
+    include(${ExtCMakeFilesDir}/CodeCoverage.cmake)
+    target_compile_options(${TestProjectName} PUBLIC -O0 -fprofile-arcs -ftest-coverage)
+    target_link_libraries(${TestProjectName} -O0 -fprofile-arcs -ftest-coverage)
+    setup_target_for_coverage(tests_coverage ${TestProjectName} coverage)
 endif()

-target_link_libraries(${TEST_PROJECT_NAME} ${CMAKE_THREAD_LIBS_INIT})
-
-
-
-
-
-
+LinkTestLib(${TestProjectName})


--- a/tests/buffer_bits_op.cpp
+++ b/tests/buffer_bits_op.cpp
@@ -24,13 +24,13 @@
 #include <gmock/gmock.h>
 #include <bitsery/buffer_writer.h>
 #include <bitsery/buffer_reader.h>
-#include <list>
-#include <bitset>
+#include <bitsery/details/serialization_common.h>

 using testing::Eq;
 using testing::ContainerEq;
 using bitsery::BufferWriter;
 using bitsery::BufferReader;
+using Buffer = std::vector<bitsery::DefaultConfig::BufferValueType>;

 struct IntegralUnsignedTypes {
    uint32_t a;
@@ -40,23 +40,29 @@ struct IntegralUnsignedTypes {
    uint64_t e;
 };

+template <typename T>
+constexpr size_t getBits(T v) {
+    return bitsery::details::calcRequiredBits<T>({}, v);
+};
+
 TEST(BufferBitsOperations, WriteAndReadBits) {
    //setup data
-    IntegralUnsignedTypes data;
-    data.a = 485454;//bits 19
-    data.b = 45978;//bits 16
-    data.c = 0;//bits 1
-    data.d = 36;//bits 6
-    data.e = 479845648946;//bits 39
+    constexpr IntegralUnsignedTypes data{
+        485454,//bits 19
+        45978,//bits 16
+        0,//bits 1
+        36,//bits 6
+        479845648946//bits 39
+    };

-    constexpr size_t aBITS = 21;
-    constexpr size_t bBITS = 16;
-    constexpr size_t cBITS = 5;
-    constexpr size_t dBITS = 7;
-    constexpr size_t eBITS = 40;
+    constexpr size_t aBITS = getBits(data.a) + 2;
+    constexpr size_t bBITS = getBits(data.b) + 0;
+    constexpr size_t cBITS = getBits(data.c) + 2;
+    constexpr size_t dBITS = getBits(data.d) + 1;
+    constexpr size_t eBITS = getBits(data.e) + 8;

    //create and write to buffer
-    std::vector<uint8_t> buf;
+    Buffer buf;
    BufferWriter bw{buf};

    bw.writeBits(data.a, aBITS);
@@ -87,7 +93,7 @@ TEST(BufferBitsOperations, WriteAndReadBits) {

 TEST(BufferBitsOperations, WhenFinishedFlushWriter) {

-    std::vector<uint8_t> buf;
+    Buffer buf;
    BufferWriter bw{buf};

    bw.writeBits(3u, 2);
@@ -101,7 +107,7 @@ TEST(BufferBitsOperations, BufferSizeIsCountedPerByteNotPerBit) {
    //setup data

    //create and write to buffer
-    std::vector<uint8_t> buf;
+    Buffer buf;
    BufferWriter bw{buf};

    bw.writeBits(7u,3);
@@ -110,7 +116,7 @@ TEST(BufferBitsOperations, BufferSizeIsCountedPerByteNotPerBit) {

    //read from buffer
    BufferReader br{buf};
-    unsigned tmp;
+    uint16_t tmp;
    EXPECT_THAT(br.readBits(tmp,4), Eq(true));
    EXPECT_THAT(br.readBits(tmp,2), Eq(true));
    EXPECT_THAT(br.readBits(tmp,2), Eq(true));
@@ -126,11 +132,44 @@ TEST(BufferBitsOperations, BufferSizeIsCountedPerByteNotPerBit) {
    EXPECT_THAT(br2.readBits(tmp,9), Eq(false));
 }

+TEST(BufferBitsOperations, ConsecutiveCallsToAlignHasNoEffect) {
+    Buffer buf;
+    BufferWriter bw{buf};
+
+    bw.writeBits(3u, 2);
+    //3 calls to align after 1st data
+    bw.align();
+    bw.align();
+    bw.align();
+    bw.writeBits(7u, 3);
+    //1 call to align after 2nd data
+    bw.align();
+    bw.writeBits(15u, 4);
+    bw.flush();
+
+    unsigned char tmp;
+    BufferReader br{buf};
+    EXPECT_THAT(br.readBits(tmp,2), Eq(true));
+    EXPECT_THAT(tmp, Eq(3u));
+    EXPECT_THAT(br.align(), Eq(true));
+
+    EXPECT_THAT(br.readBits(tmp,3), Eq(true));
+    EXPECT_THAT(tmp, Eq(7u));
+    EXPECT_THAT(br.align(), Eq(true));
+    EXPECT_THAT(br.align(), Eq(true));
+    EXPECT_THAT(br.align(), Eq(true));
+
+    EXPECT_THAT(br.readBits(tmp,4), Eq(true));
+    EXPECT_THAT(tmp, Eq(15u));
+}
+
+
+
 TEST(BufferBitsOperations, WhenAlignedFlushHasNoEffect) {
    //setup data

    //create and write to buffer
-    std::vector<uint8_t> buf;
+    Buffer buf;
    BufferWriter bw{buf};

    bw.writeBits(3u, 2);
@@ -140,11 +179,12 @@ TEST(BufferBitsOperations, WhenAlignedFlushHasNoEffect) {
    EXPECT_THAT(std::distance(buf.begin(), buf.end()), Eq(1));
 }

+
 TEST(BufferBitsOperations, AlignMustWriteZerosBits) {
    //setup data

    //create and write to buffer
-    std::vector<uint8_t> buf;
+    Buffer buf;
    BufferWriter bw{buf};

    //write 2 bits and align
--- a/tests/buffer_bytes_op.cpp
+++ b/tests/buffer_bytes_op.cpp
@@ -31,6 +31,7 @@ using testing::Eq;
 using testing::ContainerEq;
 using bitsery::BufferWriter;
 using bitsery::BufferReader;
+using Buffer = std::vector<bitsery::DefaultConfig::BufferValueType>;

 struct IntegralTypes {
    int64_t a;
@@ -68,7 +69,7 @@ TEST(BufferBytesOperations, WriteAndReadBytes) {
    //setup data
    auto data =getInitializedIntegralTypes();
    //create and write to buffer
-    std::vector<uint8_t> buf{};
+    Buffer buf{};
    BufferWriter bw{buf};
    writeIntegralTypesToBuffer(bw, data);

@@ -98,7 +99,7 @@ TEST(BufferBytesOperations, BufferReaderUsingDataPlusSizeCtor) {
    //setup data
    auto data =getInitializedIntegralTypes();
    //create and write to buffer
-    std::vector<uint8_t> buf{};
+    Buffer buf{};
    BufferWriter bw{buf};
    writeIntegralTypesToBuffer(bw, data);

@@ -127,7 +128,7 @@ TEST(BufferBytesOperations, BufferReaderUsingCArrayCtor) {
    //setup data
    auto data =getInitializedIntegralTypes();
    //create and write to buffer
-    std::vector<uint8_t> buf{};
+    Buffer buf{};
    BufferWriter bw{buf};
    writeIntegralTypesToBuffer(bw, data);

@@ -161,7 +162,7 @@ TEST(BufferBytesOperations, ReadReturnsFalseIfNotEnoughBufferSize) {
    uint8_t a = 111;

    //create and write to buffer
-    std::vector<uint8_t> buf{};
+    Buffer buf{};
    BufferWriter bw{buf};

    bw.writeBytes<1>(a);
@@ -190,7 +191,7 @@ TEST(BufferBytesOperations, ReadIsCompletedWhenAllBytesAreRead) {
    data.d = 200;

    //create and write to buffer
-    std::vector<uint8_t> buf{};
+    Buffer buf{};
    BufferWriter bw{buf};

    bw.writeBytes<4>(data.b);
@@ -217,3 +218,57 @@ TEST(BufferBytesOperations, ReadIsCompletedWhenAllBytesAreRead) {
    EXPECT_THAT(br1.isCompleted(), Eq(true));

 }
+
+TEST(BufferBytesOperations, ReadWriteBufferFncCanAcceptSignedData) {
+    //setup data
+    constexpr size_t DATA_SIZE = 3;
+    int16_t src[DATA_SIZE] {54,-4877,30067};
+    //create and write to buffer
+    Buffer buf{};
+    BufferWriter bw{buf};
+    bw.writeBuffer<2>(src, DATA_SIZE);
+    bw.flush();
+    //read from buffer
+    BufferReader br1{buf};
+    int16_t dst[DATA_SIZE]{};
+    EXPECT_THAT(br1.readBuffer<2>(dst, DATA_SIZE), Eq(true));
+    EXPECT_THAT(dst, ContainerEq(src));
+
+    //read more than available
+    BufferReader br2{buf};
+    int16_t dstMore[DATA_SIZE+1]{};
+    EXPECT_THAT(br2.readBuffer<2>(dstMore, DATA_SIZE+1), Eq(false));
+}
+
+TEST(BufferBytesOperations, ReadWriteBufferCanWorkOnUnalignedData) {
+    //setup data
+    constexpr size_t DATA_SIZE = 3;
+    int16_t src[DATA_SIZE] {54,-4877,30067};
+    //create and write to buffer
+    Buffer buf{};
+    BufferWriter bw{buf};
+    bw.writeBits(15u, 4);
+    bw.writeBuffer<2>(src, DATA_SIZE);
+    bw.writeBits(12u, 4);
+    bw.flush();
+    EXPECT_THAT(buf.size(), Eq(sizeof(src) + 1));
+
+    //read from buffer
+    BufferReader br1{buf};
+    int16_t dst[DATA_SIZE]{};
+    uint8_t tmp{};
+    br1.readBits(tmp, 4);
+    EXPECT_THAT(tmp, Eq(15));
+    EXPECT_THAT(br1.readBuffer<2>(dst, DATA_SIZE), Eq(true));
+    EXPECT_THAT(dst, ContainerEq(src));
+    br1.readBits(tmp, 4);
+    EXPECT_THAT(tmp, Eq(12));
+
+    //read more than available
+    BufferReader br2{buf};
+    br2.readBits(tmp, 4);
+    int16_t dstMore[DATA_SIZE+1]{};
+    EXPECT_THAT(tmp, Eq(15));
+    EXPECT_THAT(br2.readBuffer<2>(dstMore, DATA_SIZE+1), Eq(false));
+}
+
--- a/tests/buffer_endianness.cpp
+++ b/tests/buffer_endianness.cpp
@@ -0,0 +1,183 @@
+//MIT License
+//
+//Copyright (c) 2017 Mindaugas Vinkelis
+//
+//Permission is hereby granted, free of charge, to any person obtaining a copy
+//of this software and associated documentation files (the "Software"), to deal
+//in the Software without restriction, including without limitation the rights
+//to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//copies of the Software, and to permit persons to whom the Software is
+//furnished to do so, subject to the following conditions:
+//
+//The above copyright notice and this permission notice shall be included in all
+//copies or substantial portions of the Software.
+//
+//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 AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+//SOFTWARE.
+
+
+#include <gmock/gmock.h>
+#include <bitsery/buffer_writer.h>
+#include <bitsery/buffer_reader.h>
+#include <bitsery/details/serialization_common.h>
+
+using testing::Eq;
+using testing::ContainerEq;
+using bitsery::EndiannessType;
+using bitsery::DefaultConfig;
+using Buffer = std::vector<bitsery::DefaultConfig::BufferValueType>;
+
+constexpr EndiannessType getInverseEndianness(EndiannessType e) {
+    return e == EndiannessType::LittleEndian
+           ? EndiannessType::BigEndian
+           : EndiannessType::LittleEndian;
+}
+
+struct InverseEndiannessConfig {
+    static constexpr bitsery::EndiannessType NetworkEndianness = getInverseEndianness(DefaultConfig::NetworkEndianness);
+    using BufferValueType = DefaultConfig::BufferValueType;
+    using BufferScrathType = DefaultConfig::BufferScrathType;
+};
+
+struct IntegralTypes {
+    int64_t a;
+    uint32_t b;
+    int16_t c;
+    uint8_t d;
+    int8_t e;
+};
+
+
+TEST(BufferEndianness, WhenWriteBytesThenBytesAreSwapped) {
+    //fill initial values
+    IntegralTypes src{};
+    src.a = 0x1122334455667788;
+    src.b = 0xBBCCDDEE;
+    src.c = 0xCCDD;
+    src.d = 0xDD;
+    src.e = 0xEE;
+
+    //fill expected result after swap
+    IntegralTypes resInv{};
+    resInv.a = 0x8877665544332211;
+    resInv.b = 0xEEDDCCBB;
+    resInv.c = 0xDDCC;
+    resInv.d = 0xDD;
+    resInv.e = 0xEE;
+
+    //create and write to buffer
+    Buffer buf{};
+    bitsery::BasicBufferWriter<DefaultConfig> bw{buf};
+    bw.writeBytes<8>(src.a);
+    bw.writeBytes<4>(src.b);
+    bw.writeBytes<2>(src.c);
+    bw.writeBytes<1>(src.d);
+    bw.writeBytes<1>(src.e);
+    bw.flush();
+    //read from buffer using inverse endianness config
+    bitsery::BasicBufferReader<InverseEndiannessConfig> br{buf};
+    IntegralTypes res{};
+    br.readBytes<8>(res.a);
+    br.readBytes<4>(res.b);
+    br.readBytes<2>(res.c);
+    br.readBytes<1>(res.d);
+    br.readBytes<1>(res.e);
+    //check results
+    EXPECT_THAT(res.a, Eq(resInv.a));
+    EXPECT_THAT(res.b, Eq(resInv.b));
+    EXPECT_THAT(res.c, Eq(resInv.c));
+    EXPECT_THAT(res.d, Eq(resInv.d));
+    EXPECT_THAT(res.e, Eq(resInv.e));
+}
+
+TEST(BufferEndianness, WhenWriteBuffer1ByteValuesThenEndiannessIsIgnored) {
+    //fill initial values
+    constexpr size_t SIZE = 4;
+    uint8_t src[SIZE] = {0xAA, 0xBB, 0xCC, 0xDD};
+    uint8_t res[SIZE] = {};
+    //create and write to buffer
+    Buffer buf{};
+    bitsery::BasicBufferWriter<DefaultConfig> bw{buf};
+    bw.writeBuffer<1>(src, SIZE);
+    bw.flush();
+    //read from buffer using inverse endianness config
+    bitsery::BasicBufferReader<InverseEndiannessConfig> br{buf};
+    br.readBuffer<1>(res, SIZE);
+    //result is identical, because we write separate values, of size 1byte, that requires no swapping
+    //check results
+    EXPECT_THAT(res, ContainerEq(src));
+}
+
+TEST(BufferEndianness, WhenWriteBufferMoreThan1ByteValuesThenValuesAreSwapped) {
+    //fill initial values
+    constexpr size_t SIZE = 4;
+    uint16_t src[SIZE] = {0xAA00, 0xBB11, 0xCC22, 0xDD33};
+    uint16_t resInv[SIZE] = {0x00AA, 0x11BB, 0x22CC, 0x33DD};
+    uint16_t res[SIZE] = {};
+    //create and write to buffer
+    Buffer buf{};
+    bitsery::BasicBufferWriter<DefaultConfig> bw{buf};
+    bw.writeBuffer<2>(src, SIZE);
+    bw.flush();
+    //read from buffer using inverse endianness config
+    bitsery::BasicBufferReader<InverseEndiannessConfig> br{buf};
+    br.readBuffer<2>(res, SIZE);
+    //result is identical, because we write separate values, of size 1byte, that requires no swapping
+    //check results
+    EXPECT_THAT(res, ContainerEq(resInv));
+}
+
+
+template <typename T>
+constexpr size_t getBits(T v) {
+    return bitsery::details::calcRequiredBits<T>({}, v);
+};
+
+struct IntegralUnsignedTypes {
+    uint64_t a;
+    uint32_t b;
+    uint16_t c;
+    uint8_t d;
+};
+
+TEST(BufferEndianness, WhenBufferValueTypeIs1ByteThenBitOperationsIsNotAffectedByEndianness) {
+    //fill initial values
+    static_assert(sizeof(DefaultConfig::BufferValueType) == 1, "currently only 1 byte size, value size is supported");
+    //fill initial values
+    constexpr IntegralUnsignedTypes src {
+            0x0000334455667788,//bits 19
+            0x00CCDDEE,//bits 16
+            0x00DD,//bits 1
+            0x0F,//bits 6
+    };
+
+    constexpr size_t aBITS = getBits(src.a) + 8;
+    constexpr size_t bBITS = getBits(src.b) + 0;
+    constexpr size_t cBITS = getBits(src.c) + 5;
+    constexpr size_t dBITS = getBits(src.d) + 2;
+    //create and write to buffer
+    Buffer buf{};
+    bitsery::BasicBufferWriter<DefaultConfig> bw{buf};
+    bw.writeBits(src.a, aBITS);
+    bw.writeBits(src.b, bBITS);
+    bw.writeBits(src.c, cBITS);
+    bw.writeBits(src.d, dBITS);
+    bw.flush();
+    //read from buffer using inverse endianness config
+    bitsery::BasicBufferReader<InverseEndiannessConfig> br{buf};
+    IntegralUnsignedTypes res{};
+    br.readBits(res.a, aBITS);
+    br.readBits(res.b, bBITS);
+    br.readBits(res.c, cBITS);
+    br.readBits(res.d, dBITS);
+    //check results
+    EXPECT_THAT(res.a, Eq(src.a));
+    EXPECT_THAT(res.b, Eq(src.b));
+    EXPECT_THAT(res.c, Eq(src.c));
+    EXPECT_THAT(res.d, Eq(src.d));
+}
--- a/tests/serialization_container.cpp
+++ b/tests/serialization_container.cpp
@@ -31,11 +31,41 @@
 using testing::ContainerEq;
 using testing::Eq;

+
+/*
+ * overload to get container of types
+ */
+
 template <typename Container>
 Container getFilledContainer() {
    return {1,2,3,4,5,78,456,8,54};
 }

+template <>
+std::vector<MyStruct1> getFilledContainer<std::vector<MyStruct1>>() {
+    return {
+            {0,1},
+            {2,3},
+            {4,5},
+            {6,7},
+            {8,9},
+            {11,34},
+            {5134,1532}
+    };
+}
+
+template <>
+std::list<MyStruct2> getFilledContainer<std::list<MyStruct2>>() {
+    return {
+            {MyStruct2::V1, {0,1}} ,
+            {MyStruct2::V3, {-45,45}}
+    };
+}
+
+/*
+ * start testing session
+ */
+
 template <typename T>
 class SerializeContainerArthmeticTypes:public testing::Test {
 public:
@@ -107,26 +137,6 @@ public:
    }
 };

-template <>
-std::vector<MyStruct1> getFilledContainer<std::vector<MyStruct1>>() {
-    return {
-            {0,1},
-            {2,3},
-            {4,5},
-            {6,7},
-            {8,9},
-            {11,34},
-            {5134,1532}
-    };
-}
-
-template <>
-std::list<MyStruct2> getFilledContainer<std::list<MyStruct2>>() {
-    return {
-            {MyStruct2::V1, {0,1}} ,
-            {MyStruct2::V3, {-45,45}}
-    };
-}

 using SequenceContainersWithCompositeTypes = ::testing::Types<
        std::vector<MyStruct1>,
--- a/tests/serialization_ext_optional.cpp
+++ b/tests/serialization_ext_optional.cpp
@@ -23,12 +23,15 @@
 #include <gmock/gmock.h>
 #include "serialization_test_utils.h"

-#include <experimental/optional>
-
-namespace std {
-    template <typename T>
-    using optional = experimental::optional<T>;
-};
+#if __cplusplus > 201402L
+#  include<optional>
+#else
+#  include <experimental/optional>
+    namespace std {
+        template <typename T>
+        using optional = experimental::optional<T>;
+    }
+#endif

 #include <bitsery/ext/optional.h>

@@ -81,5 +84,3 @@ TEST(SerializeExtensionOptional, OptionalHasValue) {
    EXPECT_THAT(t1.value(), Eq(r1.value()));

 }
-
-
--- a/tests/serialization_objects.cpp
+++ b/tests/serialization_objects.cpp
@@ -157,7 +157,7 @@ TEST(DeltaSerializer, GeneralConceptTest) {
 	yNew.vx[1].s = "bla";
 	yNew.vx.push_back(X{ 3 });

-	std::vector<uint8_t> buf;
+	std::vector<bitsery::DefaultConfig::BufferValueType> buf;
 	bitsery::BufferWriter bw{ buf };
 	bitsery::DeltaSerializer<bitsery::BufferWriter, Y> ser(bw, y, yNew);
 	serialize(ser, yNew);
--- a/tests/serialization_range.cpp
+++ b/tests/serialization_range.cpp
@@ -29,17 +29,17 @@ using bitsery::BitsConstraint;

 TEST(SerializeRange, RequiredBitsIsConstexpr) {
    constexpr RangeSpec<int> r1{0, 31};
-    static_assert(r1.bitsRequired == 5);
+    static_assert(r1.bitsRequired == 5, "r1.bitsRequired == 5");

    constexpr RangeSpec<MyEnumClass> r2{MyEnumClass::E1, MyEnumClass::E4};
-    static_assert(r2.bitsRequired == 2);
+    static_assert(r2.bitsRequired == 2, "r2.bitsRequired == 2");

    constexpr RangeSpec<double> r3{-1.0,1.0, BitsConstraint{5u}};
    //EXPECT_THAT(r1.bitsRequired, Eq(5));
-    static_assert(r3.bitsRequired == 5);
+    static_assert(r3.bitsRequired == 5, "r3.bitsRequired == 5");

    constexpr RangeSpec<float> r4{-1.0f,1.0f, 0.01f};
-    static_assert(r4.bitsRequired == 8);
+    static_assert(r4.bitsRequired == 8, "r4.bitsRequired == 8");

 }

@@ -133,7 +133,7 @@ TEST(SerializeRange, FloatUsingBitsSizeConstraint1) {
    ctx.createDeserializer().range(res1, r1);

    EXPECT_THAT(ctx.getBufferSize(), Eq(1));
-    EXPECT_THAT(res1, ::testing::FloatNear(t1, (max - min) / (static_cast<bitsery::SAME_SIZE_UNSIGNED<float>>(1) << bits)));
+    EXPECT_THAT(res1, ::testing::FloatNear(t1, (max - min) / (static_cast<bitsery::details::SAME_SIZE_UNSIGNED<float>>(1) << bits)));
 }

 TEST(SerializeRange, DoubleUsingBitsSizeConstraint2) {
@@ -150,5 +150,5 @@ TEST(SerializeRange, DoubleUsingBitsSizeConstraint2) {
    ctx.createDeserializer().range(res1, r1);

    EXPECT_THAT(ctx.getBufferSize(), Eq(7));
-    EXPECT_THAT(res1, ::testing::DoubleNear(t1, (max - min) / (static_cast<bitsery::SAME_SIZE_UNSIGNED<double>>(1) << bits)));
+    EXPECT_THAT(res1, ::testing::DoubleNear(t1, (max - min) / (static_cast<bitsery::details::SAME_SIZE_UNSIGNED<double>>(1) << bits)));
 }
--- a/tests/serialization_test_utils.h
+++ b/tests/serialization_test_utils.h
@@ -27,6 +27,11 @@
 #include <bitsery/bitsery.h>
 #include <memory>

+
+/*
+ * define some types for testing
+ */
+
 struct MyStruct1 {
    MyStruct1(int v1, int v2):i1{v1}, i2{v2} {}
    MyStruct1():MyStruct1{0,0} {}
@@ -70,8 +75,9 @@ SERIALIZE(MyStruct2) {
            object(o.s1);
 }

+
 class SerializationContext {
-    std::vector<uint8_t> buf{};
+    std::vector<bitsery::DefaultConfig::BufferValueType> buf{};
    std::unique_ptr<bitsery::BufferWriter> bw;
    std::unique_ptr<bitsery::BufferReader> br;
 public:
@@ -83,7 +89,7 @@ public:
    size_t getBufferSize() const {
        return buf.size();
    }
-    //since all containers .size() method returns size_t, it cannot be dirrectly serialized, because size_t is platform dependant
+    //since all containers .size() method returns size_t, it cannot be directly serialized, because size_t is platform dependant
    //this function returns number of bytes writen to buffer, when reading/writing size of container
    static size_t containerSizeSerializedBytesCount(size_t elemsCount) {
        if (elemsCount < 0x80u)
--- a/tests/serialization_values.cpp
+++ b/tests/serialization_values.cpp
@@ -86,7 +86,7 @@ TEST(SerializeValues, ValueSizeOverload2Byte) {
 }

 TEST(SerializeValues, ValueSizeOverload4Byte) {
-    float v{54.498};
+    float v{54.498f};
    float res;
    constexpr size_t TSIZE = sizeof(v);