GASATHON/Project/Source/GasaGen/GasaGen.cpp

#define GEN_DEFINE_LIBRARY_CODE_CONSTANTS
#define GEN_ENFORCE_STRONG_CODE_TYPES
#define GEN_EXPOSE_BACKEND
// #define GEN_DEFINE_ATTRIBUTE_TOKENS
#define GEN_IMPLEMENTATION
#include "gen.cpp"
#include "gen.builder.cpp"
// #include "gen.scanner.hpp"
using namespace gen;

#ifdef GEN_SYSTEM_WINDOWS
	#include <process.h>
#endif

#include "GasaGenCommon.cpp"
#include "GasaGen_ue_parse_testing.cpp"
#include "GasaGen_UGasaAttributeSet.cpp"
#include "GasaGen_ChangeBPActionMenu.cpp"
#include "GasaGen_DevOptionsCache.cpp"
#include "GasaGen_HostWidgetController.cpp"

void gen_UHostWidgetController()
{
	Array<StringCached> attribute_fields = get_gasa_attribute_fields();

	CodeBody ori_HostWidgetController_header = parse_file(path_gasa_ui "HostWidgetController.h");
	{
		CodeBody header_body = def_body(ECode::Global_Body);

		StrC      str_UHostWidgetController = txt("UHostWidgetController");
		CodeClass ori_UHostWidgetController = NoCode;

		Code file_code = ori_HostWidgetController_header.begin();
		for ( ; file_code != ori_HostWidgetController_header.end(); ++ file_code )
		{
			if (s32 never_enter = 0; never_enter)
				found: break;

			switch (file_code->Type)
			{
			default:
				header_body.append(file_code);
				continue;

			case ECode::Class:
				if ( ! file_code->Name.starts_with(str_UHostWidgetController))
					continue;
				ori_UHostWidgetController = file_code.cast<CodeClass>();
				++ file_code;
				goto found;

			case ECode::Preprocess_Include:
				header_body.append(file_code);

				if ( file_code->Content.starts_with(txt("HostWidgetController.generated.h")))
				{
					header_body.append(fmt_newline);
					header_body.append(fmt_newline);
				}
			continue;

			case ECode::Untyped:
				header_body.append(file_code);

				if (file_code->Content.starts_with( txt("DECLARE_"))
				||	file_code->Content.starts_with( txt("UCLASS"))
				)
					header_body.append(fmt_newline);
			continue;
			}
		}

		CodeBody attribute_events = def_body(ECode::Class_Body);
		{
			attribute_events.append( def_comment( txt("Attribute Events are generated by GasaGen/GasaGen_HostWidgetController.cpp")));
			attribute_events.append(fmt_newline);

			for ( s32 id = 0; id < attribute_fields.num(); )
			{
				StringCached attribute_field = attribute_fields[id];

				attribute_events.append( code_str(
					UPROPERTY(BlueprintAssignable, Category = "Attributes")
				));
				attribute_events.append(fmt_newline);
				attribute_events.append( parse_variable(
					token_fmt( "field", (StrC) attribute_field, stringize( FAttributeFloatChangedSig Event_On<field>Changed; ))
				));

				++ id;
				if ( id < attribute_fields.num() )
				{
					attribute_events.append(fmt_newline);
				}
			}
		}

		CodeClass new_UHostWidgetController = ori_UHostWidgetController.duplicate().cast<CodeClass>();
		CodeBody  new_body                  = def_body(ECode::Class_Body);
		for (Code	code = ori_UHostWidgetController->Body.begin();
					code != ori_UHostWidgetController->Body.end();
					++ code )
		{
			switch (code->Type)
			{
				default:
					new_body.append(code);
					continue;

				case ECode::Preprocess_Pragma:
				{
					local_persist bool found = false;
					if (found)
					{
						new_body.append(code);
						continue;
					}

					CodePragma pragma = code.cast<CodePragma>();
					if ( pragma->Content.starts_with(txt("region Attribute Events")) )
					{
						new_body.append(pragma);
						++ code;

						new_body.append(attribute_events);

						while (code->Type != ECode::Preprocess_Pragma
							|| ! code->Content.starts_with(txt("endregion Attribute Events"))) 
							++ code;

						new_body.append( code );
						found = true;
					}
				}
				break;

				case ECode::Untyped:
					new_body.append(code);

					if (code->Content.starts_with( txt("GENERATED_BODY")))
						new_body.append(fmt_newline);
			}
		}
		new_body.append(fmt_newline);
		new_UHostWidgetController->Body = new_body;
		header_body.append(new_UHostWidgetController);

		for (; file_code != ori_HostWidgetController_header.end(); ++ file_code)
		{
			header_body.append(file_code);
		}

		Builder header = Builder::open(path_gasa_ui "HostWidgetController.h");
		header.print(header_body);
		header.write();
		format_file(path_gasa_ui "HostWidgetController.h");
	}

	CodeBody ori_HostWidgetController_source = parse_file(path_gasa_ui "HostWidgetController.cpp");
	{
		CodeBody source_body = def_body(ECode::Global_Body);

		CodeBody broadcast_calls = def_body(ECode::Function_Body);
		for (StringCached field : attribute_fields)
		{
			broadcast_calls.append( code_fmt( "field", (StrC)field,
				stringize( Event_On<field>Changed.Broadcast( GasaAttribs->Get<field>() ); )
			));
		}

		CodeFn BroadcastInitialValues = parse_function( token_fmt( "broadcast_calls", (StrC)broadcast_calls.to_string(),
		stringize(
			void UHostWidgetController::BroadcastInitialValues()
			{
				Super::BroadcastInitialValues();
				// Thiis function is managed by: GasaGen/GasaGen_HostWidgetController.cpp

				UGasaAttributeSet* GasaAttribs = Cast<UGasaAttributeSet>(Data.Attributes);
				if (GasaAttribs)
				{
					<broadcast_calls>
				}
			})
		));

		for ( Code code : ori_HostWidgetController_source)
		{
			switch (code->Type)
			{
				case ECode::Function:
					CodeFn function_def = code.cast<CodeFn>();

					if ( String::are_equal(function_def->Name, BroadcastInitialValues->Name)
					&&	function_def->Params.is_equal(BroadcastInitialValues->Params))
					{
						code = BroadcastInitialValues;
						log_fmt("Swapped: %S", BroadcastInitialValues->Name);
					}
				break;
			}

			source_body.append(code);
		}

		Builder source = Builder::open(path_gasa_ui "HostWidgetController.cpp");
		source.print(source_body);
		source.write();
		format_file(path_gasa_ui "HostWidgetController.cpp");
	}
}

int gen_main()
{
	gen::init();
	log_fmt("Generating code for the Gasa module\n");

	// Initialize Globals
	{
		UHT_UCLASS         = code_str( UCLASS() );
		UHT_UPROPERTY      = code_str( UPROPERTY() );
		UHT_USTRUCT        = code_str( USTRUCT() );
		UHT_GENERATED_BODY = code_str( GENERATED_BODY()\n );
		UModule_GASA_API   = code_str( GASA_API );
	}

	// Populate Defines
	{
		PreprocessorDefines.append( get_cached_string(str_DECLARE_CLASS));
		PreprocessorDefines.append( get_cached_string(str_DECLARE_DELEGATE_RetVal_OneParam));
		PreprocessorDefines.append( get_cached_string(str_DECLARE_DELEGATE_RetVal_ThreeParams));
		PreprocessorDefines.append( get_cached_string(str_DECLARE_DELEGATE_SixParams));
		PreprocessorDefines.append( get_cached_string(str_DECLARE_DYNAMIC_MULTICAST_DELEGATE_OneParam));
		PreprocessorDefines.append( get_cached_string(str_DECLARE_DYNAMIC_MULTICAST_SPARSE_DELEGATE_FiveParams));
		PreprocessorDefines.append( get_cached_string(str_DECLARE_DYNAMIC_MULTICAST_SPARSE_DELEGATE_FourParams));
		PreprocessorDefines.append( get_cached_string(str_DECLARE_DYNAMIC_MULTICAST_SPARSE_DELEGATE_NineParams));
		PreprocessorDefines.append( get_cached_string(str_DECLARE_DYNAMIC_MULTICAST_SPARSE_DELEGATE_OneParam));
		PreprocessorDefines.append( get_cached_string(str_DECLARE_DYNAMIC_MULTICAST_SPARSE_DELEGATE_SevenParams));
		PreprocessorDefines.append( get_cached_string(str_DECLARE_DYNAMIC_MULTICAST_SPARSE_DELEGATE_TwoParams));
		PreprocessorDefines.append( get_cached_string(str_DECLARE_EVENT_ThreeParams));
		PreprocessorDefines.append( get_cached_string(str_DECLARE_EVENT_TwoParams));
		PreprocessorDefines.append( get_cached_string(str_DECLARE_FUNCTION));
		PreprocessorDefines.append( get_cached_string(str_DECLARE_LOG_CATEGORY_EXTERN));
		PreprocessorDefines.append( get_cached_string(str_DECLARE_MULTICAST_DELEGATE_OneParam));
		PreprocessorDefines.append( get_cached_string(str_DECLARE_MULTICAST_DELEGATE_ThreeParams));
		PreprocessorDefines.append( get_cached_string(str_DECLARE_MULTICAST_DELEGATE_TwoParams));
		PreprocessorDefines.append( get_cached_string(str_DEFINE_ACTORDESC_TYPE));
		PreprocessorDefines.append( get_cached_string(str_DEFINE_DEFAULT_OBJECT_INITIALIZER_CONSTRUCTOR_CALL));
		PreprocessorDefines.append( get_cached_string(str_ENUM_CLASS_FLAGS));
		PreprocessorDefines.append( get_cached_string(str_FORCEINLINE_DEBUGGABLE));
		// PreprocessorDefines.append( get_cached_string(str_FORCEINLINE));
		PreprocessorDefines.append( get_cached_string(str_GENERATED_BODY));
		PreprocessorDefines.append( get_cached_string(str_GENERATED_UCLASS_BODY));
		PreprocessorDefines.append( get_cached_string(str_GENERATED_USTRUCT_BODY));
		PreprocessorDefines.append( get_cached_string(str_PRAGMA_DISABLE_DEPRECATION_WARNINGS));
		PreprocessorDefines.append( get_cached_string(str_PRAGMA_ENABLE_DEPRECATION_WARNINGS));
		PreprocessorDefines.append( get_cached_string(str_PROPERTY_BINDING_IMPLEMENTATION));
		PreprocessorDefines.append( get_cached_string(str_RESULT_DECL));
		PreprocessorDefines.append( get_cached_string(str_SLATE_BEGIN_ARGS));
		PreprocessorDefines.append( get_cached_string(str_SLATE_END_ARGS));
		PreprocessorDefines.append( get_cached_string(str_TEXT));
		PreprocessorDefines.append( get_cached_string(str_UCLASS));
		PreprocessorDefines.append( get_cached_string(str_UENUM));
		PreprocessorDefines.append( get_cached_string(str_UFUNCTION));
		PreprocessorDefines.append( get_cached_string(str_UMETA));
		PreprocessorDefines.append( get_cached_string(str_UPARAM));
		PreprocessorDefines.append( get_cached_string(str_UPROPERTY));
		PreprocessorDefines.append( get_cached_string(str_USTRUCT));
	}

	gen_UGasaAttributeSet();
	gen_FGasaDevOptionsCache();
	gen_UHostWidgetController();

	// One offs
	if (0)
	{
		ue_parse_testing();
		swap_SBlueprintActionMenu_Construct();
	}
	return 0;
}