Add tests for dang-lua Convert and State.

CMakeLists.txt

@@ -64,7 +64,11 @@ if(MSVC)
   endif()
 else()
   add_compile_options(-Wall -Wextra -pedantic $<$<BOOL:${DANG_WERROR}>:-Werror>)
-  add_compile_options(-Wno-missing-braces -Wno-logical-op-parentheses)
+  if(${CMAKE_CXX_COMPILER_ID} MATCHES "Clang")
+    add_compile_options(-Wno-missing-braces -Wno-logical-op-parentheses)
+  else()
+    add_compile_options(-Wno-parentheses)
+  endif()
 endif()
 
 dang_add_feature_subdirectory(BOX2D dang-box2d)

dang-lua/CMakeLists.txt

@@ -6,6 +6,7 @@ dang_check_dependencies(UTILS)
 dang_include_finder(FindLua)
 
 dang_find_package(Lua REQUIRED)
+dang_find_package(tl-expected CONFIG REQUIRED)
 
 add_library(${PROJECT_NAME} INTERFACE)
 
@@ -25,20 +26,24 @@ target_precompile_headers(
   <memory>
   <numeric>
   <optional>
-  <string>
   <string_view>
+  <string>
   <tuple>
   <type_traits>
   <typeinfo>
   <variant>)
 
-target_link_libraries(${PROJECT_NAME} INTERFACE dang-utils lua-cpp)
+target_link_libraries(${PROJECT_NAME} INTERFACE dang-utils lua-cpp tl::expected)
 
 target_include_directories(${PROJECT_NAME} INTERFACE $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
                                                      $<INSTALL_INTERFACE:include>)
 
 add_subdirectory(stl)
 
+if(BUILD_TESTING)
+  add_subdirectory(tests)
+endif()
+
 install(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/include/ TYPE INCLUDE)
 
 install(TARGETS ${PROJECT_NAME} EXPORT dang-lib-targets)

dang-lua/include/dang-lua/Allocator.h

@@ -0,0 +1,18 @@
+#pragma once
+
+#include "dang-lua/global.h"
+
+namespace dang::lua {
+
+/// @brief Wraps allocation function and optional userdata, which Lua passes to this function.
+struct Allocator {
+    constexpr Allocator(lua_Alloc function, void* userdata = nullptr)
+        : function(function)
+        , userdata(userdata)
+    {}
+
+    lua_Alloc function;
+    void* userdata;
+};
+
+} // namespace dang::lua