experiments with shared libraries

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

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+/*******************************************************************************
+ * 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);
+}