UnrealEngineUWP/Engine/Plugins/Runtime/Metasound/Source/MetasoundStandardNodes/Public/MetasoundParamHelper.h

// Copyright Epic Games, Inc. All Rights Reserved.

#pragma once

/*

 Macros to make parameter definitions a little easier
 Use in a namespace

namespace Metasound
{
	namespace MyNodeVertexNames
	{
		METASOUND_PARAM(InputParam1, "Param 1", "Tooltip for param1.");
		METASOUND_PARAM(InputParam2, "Param 2", "Tooltip for param2.");
		METASOUND_PARAM(OutputParam1, "Out Param1", "Tooltip for output param 2.");
		METASOUND_PARAM(OutputParam2, "Out Param2", "Tooltip for output param 2.");
	}
}

Then to retrieve just do when in a:

using namespace MyNodeVertexNames;

METASOUND_GET_PARAM_NAME(InputParam1)
METASOUND_GET_PARAM_TT(InputParam1)

For variable parameters (e.g. templated on number), do the following:

	namespace TriggerAccumulatorVertexNames
	{
		METASOUND_PARAM(InputParam, "Param {0}", "Do {0} tooltip.");
	}

Then to retrieve the name/tooltip use:

METASOUND_GET_VARIABLE_PARAM_NAME(InputParam, NUMBER);

Where NUMBER is a number (or whatever) to slot into the format specifier you defined in the param def.

*/


#define METASOUND_PARAM(NAME, NAME_TEXT, TOOLTIP_TEXT) \
	static const TCHAR* NAME##Name = TEXT(NAME_TEXT); \
	static const FText NAME##Tooltip = LOCTEXT(#NAME "Tooltip", TOOLTIP_TEXT); \


#define METASOUND_GET_PARAM_NAME(NAME) NAME##Name
#define METASOUND_GET_PARAM_TT(NAME) NAME##Tooltip
#define METASOUND_GET_PARAM_NAME_AND_TT(NAME) NAME##Name, NAME##Tooltip

#define METASOUND_GET_VARIABLE_PARAM_NAME(NAME, INDEX) FString::Format(NAME##Name, {INDEX})
#define METASOUND_GET_VARIABLE_TT(NAME, INDEX)  FText::Format(NAME##Tooltip, INDEX)
#define METASOUND_GET_VARIABLE_PARAM_NAME_AND_TT(NAME, INDEX)  FString::Format(NAME##Name, {INDEX}), FText::Format(NAME##Tooltip, INDEX)