An antl4r based program that can automatically remove server only code from Unreal projects using Angelscript (https://angelscript.hazelight.se/)

Thanks to Tom van Dijck for initiating this project and suggesting to use Antl4r as the base!

I would strongly recommend using VSCode as that will give you the visual antl4r debugger. You need these extensions:

• ANTLR4 grammar syntax support
• C#

Then, you should just have to open the Grammar/AngelscriptParser.g4 file and save it once to generate all the antl4r stuff.

Since the launch targets include local paths, I don't think it makes sense to have these checked in in project scope, so I'll just put some launch config templates here instead! <3 You will have to put your own arguments in there of course :) These configs will excise a full script folder and visually debug one AS file, respectively!

{
	// Use IntelliSense to learn about possible attributes.
	// Hover to view descriptions of existing attributes.
	// For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
	"version": "0.2.0",
	"configurations": [
		{
			"name": "Excise Server Angelscript",
			"type": "coreclr",
			"request": "launch",
			"preLaunchTask": "build",
			"program": "${workspaceFolder}/ServerCodeExciser/bin/Debug/net5.0/ServerCodeExciser.exe",
			"args": ["C:/Projects/MyProject/Script"],
			"cwd": "${workspaceFolder}/ServerCodeExciser",
			"console": "internalConsole",
			"stopAtEntry": false
		},
		{
			"name": "Debug Angelscript Grammar For Input",
			"type": "antlr-debug",
			"request": "launch",
			"preLaunchTask": "build",
			"grammar": "${workspaceFolder}/UnrealAngelscriptParser/Grammar/UnrealAngelscriptParser.g4",
			"input": "C:/Projects/MyProject/Script/Foo.as",
			"printParseTree": true,
			"visualParseTree": true
		}
	]
}

I usually try running the full parser target to see which files are breaking. Then I point the grammar target to that file and run it. After you see the errors, you can then start removing code from the file until only the thing that causes the error is left, and then start tweaking the grammar to fix it! Happy antlering!

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• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

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