chore: system providers (#126)

Author: Kelwan

rt_entt_codegen/core/BUILD.bazel

@@ -13,6 +13,7 @@ cc_library(
 _CORE_CODEGEN_METHODS = {
     "execute_systems": [
         "//rt_entt_codegen/shared:parallel",
+        "//rt_entt_codegen/shared:system_variant",
     ],
     "create_registry": [],
     "entity_matches": [
@@ -26,6 +27,11 @@ _CORE_CODEGEN_METHODS = {
         "//rt_entt_codegen/shared:system_util",
         "//rt_entt_codegen/shared:parallel",
         "//rt_entt_codegen/core/sys_exec",
+        "//rt_entt_codegen/core/system_provider:lazy",
+        "//rt_entt_codegen/core/system_provider:association",
+        "//rt_entt_codegen/core/system_provider:notify",
+        "//rt_entt_codegen/core/system_provider:basic",
+        "//rt_entt_codegen/core/system_provider",
         "@entt//:entt",
         "@ecsact_rt_entt//:lib",
     ],

rt_entt_codegen/core/execute_systems.cc

@@ -4,6 +4,7 @@
 #include "ecsact/lang-support/lang-cc.hh"
 #include "rt_entt_codegen/shared/util.hh"
 #include "ecsact/cpp_codegen_plugin_util.hh"
+#include "rt_entt_codegen/shared/system_variant.hh"
 
 constexpr auto METHOD_BODY_TOP = R"(
 auto& registry = ecsact::entt::get_registry(registry_id);
@@ -77,66 +78,28 @@ auto ecsact::rt_entt_codegen::core::print_execute_systems( //
 		});
 	});
 
+	std::vector<system_like_id_variant> system_like_variants;
+
+	for(const auto sys_like_id : details.top_execution_order) {
+		if(details.is_system(sys_like_id)) {
+			system_like_variants.push_back(static_cast<ecsact_system_id>(sys_like_id)
+			);
+		} else if(details.is_action(sys_like_id)) {
+			system_like_variants.push_back(static_cast<ecsact_action_id>(sys_like_id)
+			);
+		}
+	}
+
 	auto parallel_system_cluster =
 		ecsact::rt_entt_codegen::parallel::get_parallel_execution_cluster(
 			ctx,
-			details,
-			details.top_execution_order
+			system_like_variants
 		);
 
-	for(const auto& systems_to_parallel : parallel_system_cluster) {
-		if(systems_to_parallel.size() == 1) {
-			auto sync_sys_id = systems_to_parallel[0];
-
-			auto sync_sys_name =
-				cpp_identifier(ecsact::meta::decl_full_name(sync_sys_id));
-
-			if(details.is_action(sync_sys_id)) {
-				ctx.write(std::format(
-					"ecsact::entt::execute_actions<{}>(registry, {}, "
-					"actions_map);\n",
-					sync_sys_name,
-					"nullptr"
-				));
-			}
-			if(details.is_system(sync_sys_id)) {
-				ctx.write(std::format(
-					"ecsact::entt::execute_system<{}>(registry, {}, "
-					"actions_map);\n",
-					sync_sys_name,
-					"nullptr"
-				));
-			}
-			continue;
-		}
-
-		ctx.write("execute_parallel_cluster(registry, nullptr, ");
-		ctx.write(std::format(
-			"std::array<exec_entry_t, {}> {{\n",
-			systems_to_parallel.size()
-		));
-		for(const auto system_like_id : systems_to_parallel) {
-			auto cpp_decl_name =
-				cpp_identifier(ecsact::meta::decl_full_name(system_like_id));
-
-			if(details.is_action(system_like_id)) {
-				ctx.write(
-					"\texec_entry_t{&ecsact::entt::execute_actions<",
-					cpp_decl_name,
-					">, actions_map},\n"
-				);
-			} else if(details.is_system(system_like_id)) {
-				ctx.write(
-					"\texec_entry_t{&ecsact::entt::execute_system<",
-					cpp_decl_name,
-					">, actions_map},\n"
-				);
-			} else {
-				ctx.write("// ??? unhandled ??? ", cpp_decl_name, "\n");
-			}
-		}
-		ctx.write("});\n");
-	}
+	ecsact::rt_entt_codegen::parallel::print_parallel_execution_cluster(
+		ctx,
+		parallel_system_cluster
+	);
 
 	ctx.write("\nupdate_all_beforechange_storage(registry_id);\n");
 	ctx.write("cleanup_system_notifies(registry_id);\n");