initial setup for generating a library compatible for usage as an Unreal thirdyparty module.

unreal_engine/Readme.md

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+# Unreal Engine Version Generator
+
+This generates a variant of gencpp thats compatiable with use as a thirdparty module within a plugin or module of an Unreal Project or the Engine itself.
+

unreal_engine/enums/AttributeTokens.csv

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+// TODO(Ed): The Attribute tokens need to be expanded and regenerated on a per-project/installation of this library for a specific codebase of Unreal.
+// We can support an arbitrary set of modules or plugin apis for parsing
+// but its up to the user to define them all (This will just provide whats be used in previous usages with Unreal).

unreal_engine/unreal.cpp

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+#define GEN_DEFINE_LIBRARY_CODE_CONSTANTS
+#define GEN_ENFORCE_STRONG_CODE_TYPES
+#define GEN_EXPOSE_BACKEDN
+#include "gen.cpp"
+
+#include "helpers/push_ignores.inline.hpp"
+
+GEN_NS_BEGIN
+#include "dependencies/parsing.cpp"
+GEN_NS_END
+
+#include "auxillary/builder.hpp"
+#include "auxillary/builder.cpp"
+#include "auxillary/scanner.hpp"
+
+using namespace gen;
+
+constexpr char const* generation_notice =
+"// This file was generated automatially by gencpp's unreal.cpp"
+"(See: https://github.com/Ed94/gencpp)\n\n";
+
+constexpr StrC implementation_guard_start = txt(R"(
+#pragma region GENCPP IMPLEMENTATION GUARD
+#if defined(GEN_IMPLEMENTATION) && ! defined(GEN_IMPLEMENTED)
+#	define GEN_IMPLEMENTED
+)");
+
+constexpr StrC implementation_guard_end = txt(R"(
+#endif
+#pragma endregion GENCPP IMPLEMENTATION GUARD
+)");
+
+constexpr StrC roll_own_dependencies_guard_start = txt(R"(
+//! If its desired to roll your own dependencies, define GEN_ROLL_OWN_DEPENDENCIES before including this file.
+// Dependencies are derived from the c-zpl library: https://github.com/zpl-c/zpl
+#ifndef GEN_ROLL_OWN_DEPENDENCIES
+
+)");
+
+constexpr StrC roll_own_dependencies_guard_end = txt(R"(
+// GEN_ROLL_OWN_DEPENDENCIES
+#endif
+)");
+
+global bool generate_gen_dep = true;
+global bool generate_builder = true;
+global bool generate_editor  = true;
+global bool generate_scanner = true;
+
+int gen_main()
+{
+#define project_dir "../project/"
+	gen::init();
+
+	Code push_ignores        = scan_file( project_dir "helpers/push_ignores.inline.hpp" );
+	Code pop_ignores         = scan_file( project_dir "helpers/pop_ignores.inline.hpp" );
+
+	Code ue_forceinline = code_str(FORCEINLINE);
+	// Code
+}