experiments with shared libraries

develop/CMakeLists.txt

@@ -17,6 +17,7 @@ include(SetupTargets)
 add_subdirectory(manuals)
 add_subdirectory(singles)
 add_subdirectory(unbench)
+add_subdirectory(unshared)
 add_subdirectory(untests)
 add_subdirectory(vendors)
 

develop/unshared/CMakeLists.txt

@@ -0,0 +1,38 @@
+project(meta.hpp.shared)
+
+# lib
+
+file(GLOB_RECURSE META_SHARED_LIB_SOURCES CONFIGURE_DEPENDS
+    "meta_shared_lib/*.cpp"
+    "meta_shared_lib/*.hpp")
+source_group(TREE ${CMAKE_CURRENT_SOURCE_DIR} FILES ${META_SHARED_LIB_SOURCES})
+
+add_library(${PROJECT_NAME}.lib SHARED ${META_SHARED_LIB_SOURCES})
+add_library(${PROJECT_NAME}::lib ALIAS ${PROJECT_NAME}.lib)
+
+target_link_libraries(${PROJECT_NAME}.lib PUBLIC
+    meta.hpp::meta.hpp
+    meta.hpp::setup_targets)
+
+target_include_directories(${PROJECT_NAME}.lib PUBLIC
+    ${CMAKE_CURRENT_BINARY_DIR}
+    ${CMAKE_CURRENT_SOURCE_DIR}/meta_shared_lib)
+
+include(GenerateExportHeader)
+generate_export_header(${PROJECT_NAME}.lib)
+
+# exe
+
+file(GLOB_RECURSE META_SHARED_EXE_SOURCES CONFIGURE_DEPENDS
+    "meta_shared_exe/*.cpp"
+    "meta_shared_exe/*.hpp")
+source_group(TREE ${CMAKE_CURRENT_SOURCE_DIR} FILES ${META_SHARED_EXE_SOURCES})
+
+add_executable(${PROJECT_NAME}.exe ${META_SHARED_EXE_SOURCES})
+
+target_link_libraries(${PROJECT_NAME}.exe PRIVATE
+    ${PROJECT_NAME}::lib
+    meta.hpp.vendors::doctest
+    meta.hpp.vendors::fmt)
+
+add_test(${PROJECT_NAME}.exe ${PROJECT_NAME}.exe)

develop/unshared/meta_shared_exe/meta_shared_exe.cpp

@@ -0,0 +1,41 @@
+/*******************************************************************************
+ * This file is part of the "https://github.com/blackmatov/meta.hpp"
+ * For conditions of distribution and use, see copyright notice in LICENSE.md
+ * Copyright (C) 2021-2024, by Matvey Cherevko (blackmatov@gmail.com)
+ ******************************************************************************/
+
+#include <meta_shared_lib.hpp>
+
+#include <doctest/doctest.h>
+
+TEST_CASE("meta/meta_shared/exe") {
+    namespace meta = meta_hpp;
+    namespace shared = meta_shared_lib;
+
+    const meta::scope library_scope = shared::get_library_scope();
+    REQUIRE(library_scope);
+
+    //
+
+    const meta::number_type int_type = library_scope.get_typedef("int").as_number();
+    REQUIRE(int_type);
+
+    const meta::class_type ivec2_type = library_scope.get_typedef("ivec2").as_class();
+    REQUIRE(ivec2_type);
+
+    const meta::constructor ivec2_ctor2 = ivec2_type.get_constructor_with({int_type, int_type});
+    REQUIRE(ivec2_ctor2);
+
+    const meta::method ivec2_length2 = ivec2_type.get_method("length2");
+    REQUIRE(ivec2_length2);
+
+    //
+
+    const meta::uvalue ivec2_inst = ivec2_ctor2.create(shared::wrap_int(3), shared::wrap_int(4));
+    REQUIRE(ivec2_inst);
+
+    const meta::uvalue ivec2_inst_length2 = ivec2_length2.invoke(ivec2_inst);
+    REQUIRE(ivec2_inst_length2);
+
+    CHECK(shared::unwrap_int(ivec2_inst_length2) == 25);
+}

develop/unshared/meta_shared_lib/meta_shared_lib.cpp

@@ -0,0 +1,56 @@
+/*******************************************************************************
+ * This file is part of the "https://github.com/blackmatov/meta.hpp"
+ * For conditions of distribution and use, see copyright notice in LICENSE.md
+ * Copyright (C) 2021-2024, by Matvey Cherevko (blackmatov@gmail.com)
+ ******************************************************************************/
+
+#include "meta_shared_lib.hpp"
+
+namespace
+{
+    using namespace meta_shared_lib;
+
+    struct ivec2 {
+        int x;
+        int y;
+
+        explicit ivec2(int nv) : x{nv}, y{nv} {}
+        ivec2(int nx, int ny) : x{nx}, y{ny} {}
+
+        int length2() const noexcept {
+            return x * x + y * y;
+        }
+    };
+
+    void bind_ivec2() {
+        meta::class_<ivec2>()
+            .constructor_<int>()
+            .constructor_<int, int>()
+            .member_("x", &ivec2::x)
+            .member_("y", &ivec2::y)
+            .method_("length2", &ivec2::length2);
+    }
+
+    const auto library_scope = []() -> meta::scope {
+        bind_ivec2();
+
+        return meta::local_scope_("library_scope")
+            .typedef_<int>("int")
+            .typedef_<ivec2>("ivec2");
+    }();
+}
+
+namespace meta_shared_lib
+{
+    meta::scope get_library_scope() {
+        return library_scope;
+    }
+
+    meta::uvalue wrap_int(int value) {
+        return value;
+    }
+
+    int unwrap_int(const meta::uvalue& value) {
+        return value.as<int>();
+    }
+}

develop/unshared/meta_shared_lib/meta_shared_lib.hpp

@@ -0,0 +1,21 @@
+/*******************************************************************************
+ * This file is part of the "https://github.com/blackmatov/meta.hpp"
+ * For conditions of distribution and use, see copyright notice in LICENSE.md
+ * Copyright (C) 2021-2024, by Matvey Cherevko (blackmatov@gmail.com)
+ ******************************************************************************/
+
+#pragma once
+
+#include <meta.hpp.shared.lib_export.h>
+
+#include <meta.hpp/meta_all.hpp>
+
+namespace meta_shared_lib
+{
+    namespace meta = meta_hpp;
+
+    META_HPP_SHARED_LIB_EXPORT meta::scope get_library_scope();
+
+    META_HPP_SHARED_LIB_EXPORT meta::uvalue wrap_int(int value);
+    META_HPP_SHARED_LIB_EXPORT int unwrap_int(const meta::uvalue& value);
+}