Implement a way to dump the gdnative_interface.h file from the executable

1 files changed, 20 insertions, 0 deletions

diff --git a/main/main.cpp b/main/main.cpp
index 08a9b4c310..85415e24d2 100644
--- a/main/main.cpp
+++ b/main/main.cpp
@@ -36,6 +36,7 @@
 #include "core/crypto/crypto.h"
 #include "core/debugger/engine_debugger.h"
 #include "core/extension/extension_api_dump.h"
+#include "core/extension/gdnative_interface_dump.gen.h"
 #include "core/extension/native_extension_manager.h"
 #include "core/input/input.h"
 #include "core/input/input_map.h"
@@ -199,6 +200,7 @@ static MovieWriter *movie_writer = nullptr;
 static bool disable_vsync = false;
 static bool print_fps = false;
 #ifdef TOOLS_ENABLED
+static bool dump_gdnative_interface = false;
 static bool dump_extension_api = false;
 #endif
 bool profile_gpu = false;
@@ -414,6 +416,7 @@ void Main::print_help(const char *p_binary) {
 	OS::get_singleton()->print("  --doctool [<path>]                           Dump the engine API reference to the given <path> (defaults to current dir) in XML format, merging if existing files are found.\n");
 	OS::get_singleton()->print("  --no-docbase                                 Disallow dumping the base types (used with --doctool).\n");
 	OS::get_singleton()->print("  --build-solutions                            Build the scripting solutions (e.g. for C# projects). Implies --editor and requires a valid project to edit.\n");
+	OS::get_singleton()->print("  --dump-gdextension-interface                 Generate GDExtension header file 'gdnative_interface.h' in the current folder. This file is the base file required to implement a GDExtension.\n");
 	OS::get_singleton()->print("  --dump-extension-api                         Generate JSON dump of the Godot API for GDExtension bindings named 'extension_api.json' in the current folder.\n");
 	OS::get_singleton()->print("  --startup-benchmark                          Benchmark the startup time and print it to console.\n");
 	OS::get_singleton()->print("  --startup-benchmark-file <path>              Benchmark the startup time and save it to a given file in JSON format.\n");
@@ -1054,6 +1057,16 @@ Error Main::setup(const char *execpath, int argc, char *argv[], bool p_second_ph
 			auto_build_solutions = true;
 			editor = true;
 			cmdline_tool = true;
+		} else if (I->get() == "--dump-gdextension-interface") {
+			// Register as an editor instance to use low-end fallback if relevant.
+			editor = true;
+			cmdline_tool = true;
+			dump_gdnative_interface = true;
+			print_line("Dumping gdnative interface header file");
+			// Hack. Not needed but otherwise we end up detecting that this should
+			// run the project instead of a cmdline tool.
+			// Needs full refactoring to fix properly.
+			main_args.push_back(I->get());
 		} else if (I->get() == "--dump-extension-api") {
 			// Register as an editor instance to use low-end fallback if relevant.
 			editor = true;
@@ -2549,8 +2562,15 @@ bool Main::start() {
 		return false;
 	}
 
+	if (dump_gdnative_interface) {
+		GDNativeInterfaceDump::generate_gdnative_interface_file("gdnative_interface.h");
+	}
+
 	if (dump_extension_api) {
 		NativeExtensionAPIDump::generate_extension_json_file("extension_api.json");
+	}
+
+	if (dump_gdnative_interface || dump_extension_api) {
 		return false;
 	}