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Doxygen filter for Squirrel

This is a doxygen filter to convert Squirrel scripts into something resembling C++ code that doxygen can parse for documentation comments.
It has been tested on Windows 10 with python 2.7 and python 3.7 and is also known to work on the Linux infrastructure of openttdcoop.org.
It was designed for Squirrel version 2.2 as used by OpenTTD for AI and Game scripts.

Usage instructions

Set the following items in your doxygen config file.

  1. EXTENSION_MAPPING: Add: nut=C++
  2. FILE_PATTERNS: Add: *.nut
  3. FILTER_PATTERNS: Add either:
    • *.nut=doxygen_squirrel_filter.bat [or]
    • *.nut=doxygen_squirrel_filter.py
      For the first option you need to adapt the path to python in the batch file.
      In case of the second option make sure that python is on your path and that python is set for files with extension .py and possibly you also need to set the path to the python script.
      In both cases you may have to add a path to the batch or python file.

Known problems

  1. Inline code in the file outside of any function can confuse doxygen too sometimes.
    Example: AILib.List main.nut the code at the bottom.
  2. Multi line string constants are not supported: (starting with @" ).
  3. Doxygen can get confused by class names that have a "." in them.
  4. Doxygen gets confused if global const or enum declarations don't get ended by a semicolon ";". If your documentation gets cut short then looking for missing semicolons is the first thing to check.

Settings

There are a few settings inside doxygen_squirrel_filter.py that you can change to your personal preferences.

  1. keep_function = True or False
    Determines if you want to keep the keyword function or not.
  2. keep_constructor = True or False
    Determines if you want to keep the keyword constructor or not.
  3. check_end_of_class = True or False
    Determines if you want to check if a ';' follows the closing '}' of a class definition. You can speed up filtering by turning this off if you always add a ";" yourself.
  4. track_class_functions = True or False
    Determines if you want to track all member functions of all classes and add them inside the class if necessary, since Squirrel allows class member functions to be declared outside the class itself.
    Note that this will slow down parsing considerably but is necessary if not all member functions are inside the class definition. If this option is set to True then check_end_of_class will also be set to True.
  5. hide_private_symbols = True or False
    Determines if you want to hide private functions, variables and enums or not.
    A symbol is considered private if it starts with an underscore.
    Notes:
  • Classes themselves are currently never considered private otherwise we would not be able to document the SuperLib classes.
  • Currently only marking private inside classes is supported.

Copyright

Copyright Jacob Boerema 2015, 2019.
License: GPL version 2.

Repository

The source code can be downloaded from: https://github.com/Wormnest/squirrel2doxygen

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