Include deprecation info in preprocess-output-macros file

src/serialization/preprocessor.cpp

@@ -171,6 +171,14 @@ void preproc_define::write(config_writer& writer, const std::string& name) const
 	writer.write_key_val("textdomain", textdomain);
 	writer.write_key_val("linenum", std::to_string(linenum));
 	writer.write_key_val("location", get_location(location));
+
+	if(is_deprecated()) {
+		writer.open_child("deprecated");
+		writer.write_key_val("level", int(*deprecation_level));
+		writer.write_key_val("version", deprecation_version.str());
+		writer.write_key_val("message", deprecation_message);
+		writer.close_child("deprecated");
+	}
 
 	for(const std::string& arg : arguments) {
 		write_argument(writer, arg);
@@ -190,6 +198,12 @@ void preproc_define::read(const config& cfg)
 	textdomain = cfg["textdomain"].str();
 	linenum = cfg["linenum"];
 	location = cfg["location"].str();
+
+	if(auto deprecated = cfg.optional_child("deprecated")) {
+		deprecation_level = DEP_LEVEL(deprecated.value()["level"].to_int());
+		deprecation_version = deprecated.value()["version"].str();
+		deprecation_message = deprecated.value()["message"].str();
+	}
 
 	for(const config& arg : cfg.child_range("argument")) {
 		read_argument(arg);