First slice plug-in refactor

src/plugin/plugin.h

@@ -0,0 +1,99 @@
+/********************************************************************************
+ *                                                                              *
+ * This file is part of IfcOpenShell.                                           *
+ *                                                                              *
+ * IfcOpenShell is free software: you can redistribute it and/or modify         *
+ * it under the terms of the Lesser GNU General Public License as published by  *
+ * the Free Software Foundation, either version 3.0 of the License, or          *
+ * (at your option) any later version.                                          *
+ *                                                                              *
+ * IfcOpenShell is distributed in the hope that it will be useful,              *
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of               *
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the                 *
+ * Lesser GNU General Public License for more details.                          *
+ *                                                                              *
+ * You should have received a copy of the Lesser GNU General Public License     *
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.         *
+ *                                                                              *
+ ********************************************************************************/
+
+#ifndef IFCOPENSHELL_PLUGIN_H
+#define IFCOPENSHELL_PLUGIN_H
+
+#include "plugin_api.h"
+
+#include <cstdint>
+#include <filesystem>
+#include <memory>
+#include <string>
+#include <vector>
+
+namespace ifcopenshell {
+namespace plugin {
+
+enum class kind {
+	parse_schema,
+	mapping,
+	kernel,
+	document_serializer,
+	geometry_serializer,
+	opencascade_geometry_ifc_writer
+};
+
+struct PLUGIN_API abi_info {
+	uint32_t plugin_api_version = 1;
+	uint32_t pointer_size = sizeof(void*);
+	bool debug_build = false;
+	std::string compiler_id;
+	std::string compiler_version;
+	std::string ifcopenshell_version;
+};
+
+struct PLUGIN_API metadata {
+	kind kind_ = kind::kernel;
+	std::string id;
+	std::string schema;
+	std::string format;
+};
+
+class PLUGIN_API module {
+public:
+	module();
+	explicit module(const metadata& metadata);
+
+	static module builtin(const metadata& metadata);
+
+	const metadata& meta() const;
+	const std::filesystem::path& path() const;
+	bool is_dynamic() const;
+	bool is_loaded() const;
+
+private:
+	struct data;
+	std::shared_ptr<data> data_;
+
+	explicit module(std::shared_ptr<data> data);
+
+	friend class manager;
+};
+
+class PLUGIN_API manager {
+public:
+	manager();
+
+	void add_search_path(const std::filesystem::path& path);
+	const std::vector<std::filesystem::path>& search_paths() const;
+
+	module load(const std::filesystem::path& path) const;
+
+private:
+	std::vector<std::filesystem::path> search_paths_;
+};
+
+PLUGIN_API abi_info host_abi();
+PLUGIN_API void validate_abi(const abi_info& abi);
+
+}
+}
+
+#endif