From a14896f9ed209dd3f9597722e5a5697bd7dbf531 Mon Sep 17 00:00:00 2001
From: "Claudius \"keldu\" Holeksa" <mail@keldu.de>
Date: Mon, 4 Dec 2023 12:18:14 +0100
Subject: meta: Renamed folder containing source

---
 modules/core/error.cpp | 156 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 156 insertions(+)
 create mode 100644 modules/core/error.cpp

(limited to 'modules/core/error.cpp')

diff --git a/modules/core/error.cpp b/modules/core/error.cpp
new file mode 100644
index 0000000..360e628
--- /dev/null
+++ b/modules/core/error.cpp
@@ -0,0 +1,156 @@
+#include "error.h"
+
+namespace saw {
+error::error(error::code code_, bool is_critical__)
+	: error_code_{static_cast<error::code>(code_)}, is_critical_{is_critical__} {}
+
+error::error(error::code code_, bool is_critical__, const std::string_view &msg)
+	:
+	error_code_{static_cast<error::code>(code_)}
+	, is_critical_{is_critical__}, error_message_{msg}{}
+
+error::error(error &&error)
+	:
+	error_code_{std::move(error.error_code_)}
+	, is_critical_{std::move(error.is_critical_)}
+	, error_message_{std::move(error.error_message_)}{}
+
+const std::string_view error::get_category() const {
+	auto& reg = impl::get_error_registry();
+
+	auto eov = reg.search_category(error_code_);
+	SAW_ASSERT(eov.is_value()){
+		return "Error category not found. Report this error to the forstio maintainer";
+	}
+
+	return eov.get_value();
+}
+
+const std::string_view error::get_message() const {
+	return std::visit(
+		[this](auto &&arg) -> const std::string_view {
+			using T = std::decay_t<decltype(arg)>;
+
+			if constexpr (std::is_same_v<T, std::string>) {
+				return std::string_view{arg};
+			} else if constexpr (std::is_same_v<T, std::string_view>) {
+				return arg;
+			} else {
+				return "Error in class Error. Good luck :)";
+			}
+		},
+		error_message_);
+}
+
+bool error::failed() const {
+	return !this->is_type<err::no_error>();
+}
+
+bool error::is_critical() const {
+	return is_critical_;
+}
+
+bool error::is_recoverable() const {
+	return !is_critical_;
+}
+
+error error::copy_error() const {
+	auto copy_error_code = error_code_;
+	error error{copy_error_code, is_critical_};
+
+	try {
+		error.error_message_ = error_message_;
+	} catch (const std::bad_alloc &) {
+		error.error_message_ =
+			std::string_view{"Error while copying Error string. Out of memory"};
+	}
+
+	return error;
+}
+
+error::code error::get_id() const { return error_code_; }
+
+namespace impl {
+error_registry& get_error_registry() {
+	static own<error_registry> reg = nullptr;
+	if(!reg){
+		reg = heap<error_registry>();
+	}
+
+	assert(reg);
+	return *reg;
+}
+}
+
+error no_error(){
+	return make_error<err::no_error>();
+}
+
+namespace impl {
+error_registry::error_registry():
+	infos_{
+		{
+			err::no_error::description,
+			err::no_error::is_critical
+		},
+		{
+			err::not_found::description,
+			err::not_found::is_critical
+		},
+		{
+			err::out_of_memory::description,
+			err::out_of_memory::is_critical
+		}
+	}
+{}
+
+error_or<const std::string_view> error_registry::search_category(const error::code& id) const {
+	if( id >= infos_.size()){
+		return make_error<err::not_found>();
+	}
+
+	return infos_.at(id).description;
+}
+
+error_or<error::code> error_registry::search_id(const std::string_view& desc)const{
+	/**
+	 * Search the index in the vector
+	 */
+	size_t i{};
+	size_t info_max_size = std::min<std::size_t>(infos_.size(), std::numeric_limits<error::code>::max());
+	for(i = 0; i < info_max_size; ++i){
+		if(infos_.at(i).description == desc){
+			break;
+		}
+	}
+
+	if(i == info_max_size){
+		return make_error<err::not_found>();
+	}
+
+	return static_cast<error::code>(i);
+}
+
+error_or<error::code> error_registry::search_or_register_id(const std::string_view& desc, bool is_critical){
+	auto err_or_id = search_id(desc);
+
+	if(err_or_id.is_value()){
+		return err_or_id.get_value();
+	}
+
+	auto& err = err_or_id.get_error();
+
+	if(err.is_type<err::not_found>()){
+		size_t new_index = infos_.size();
+		if(new_index == std::numeric_limits<error::code>::max()){
+			return make_error<err::out_of_memory>("Error registry ids are exhausted");
+		}
+		infos_.emplace_back(error_info{desc, is_critical});
+		return static_cast<error::code>(new_index);
+	}
+
+	return std::move(err);
+}
+}
+
+} // namespace saw
-- 
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