Part 20 - Structure of a Boo Project

On the Project-level

Here I'll use the example of the IRC bot I write: Goomba

+ Goomba (Goomba namespace)
   |+ Configuration (Goomba.Configuration namespace)
   |   |- Config.boo
   |       |# class Config
   |+ Data (Goomba.Data namespace)
   |   |- Column.boo
   |   |   |# class Column
   |   |- Database.boo
   |   |   |# enum DatabaseType
   |   |   |# class Database
   |   |- DatabasePreferences.boo
   |   |   |# class DatabasePreferences
   |   |- Result.boo
   |       |# class Result
   |+ Plugins (Goomba.Plugins namespace)
   |   |- DefineCommand.boo
   |   |   |# class DefineCommand
   |   |       |# class Definition
   |   |- Hail.boo
   |   |   |# class Hail
   |   |       |# class HailMessage
   |   |- HelpCommand.boo
   |   |   |# class HelpCommand
   |   |- Logger.boo
   |   |   |# class Logger
   |   |       |# class Message
   |   |       |# class Action
   |   |- Quoter.boo
   |   |   |# class Quoter
   |   |       |# class Quote
   |   |- RawLogger.boo
   |   |   |# class RawLogger
   |   |- UrlGenerator.boo
   |   |   |# class UrlGenerator
   |   |       |# class Engine
   |   |- UserTracker.boo
   |   |   |# class UserTracker
   |   |       |# class User
   |   |- VersionCommand.boo
   |   |   |# class VersionCommand
   |   |- UrlTracker.boo
   |       |# class UrlTracker
   |           |# class Url
   |- ActionEventArgs.boo
   |   |# enum ActionType
   |   |# class ActionEventArgs
   |- DebugLogger.boo
   |   |# enum LogImportance
   |   |# class DebugLogger
   |- Goomba.boo
   |   |# class Goomba
   |   |! Main Body (This will be executed when Goomba.exe is run)
   |- GoombaPreferences.boo
   |   |# class GoombaPreferences
   |- IPlugin.boo
   |   |# interface IPlugin
   |- MessageEventArgs.boo
   |   |# enum MessageType
   |   |# class MessageEventArgs
   |- Sender.boo
       |# enum SenderType
       |# class Sender

Which I have set up to create the assemblies Goomba.exe, Goomba.Data.dll, Goomba.Configuration.dll, as well as one assembly per plugin.

You may have noticed a few important things:

For every directory, it represents a different namespace, with the same name as the directory itself.
Each .boo file has at most one class in it. That class will have the same exact name as the .boo file.
The "Main Body" section is below the class Goomba definition. Any inline executable code must be at the bottom of a file in the assembly.
Enums come before classes. This is merely a coding practice that is not required, but recommended. If an enum is larger than 15 values, place it in its own file.

On the File-level

Files must be defined in this order:

Module docstring
Namespace declaration
Import statements
Enums/Classes/Structs/Interfaces
Functions
Main code executed when script is run
Assembly attributes

One class per file. If you have more than one class per file, split it up.
If you have a class inside another class, this is acceptable, as it still has one flat class per file.

Go on to Part 21 - Documentation