sca2d 0.0.1

An experimental static code analyser for OpenSCAD.

SCAD2D - Static Code Analysis for SCAD

This is an experimental linter for OpenSCAD. The focus is to properly lex the .scad files so that we can test for dangerous code like redefining variable from other scopes. SCA2D is in a very early stage of development.

How to run

Once installed you should be able to run SCA2D from the terminal. To see the help screen run:

sca2d -h

To analysyse a .scad file run:

sca2d filename.scad

This will print the any code messages to the screen.

If you wish to inspect the parse tree that SCA2D generates and then uses you can instead run:

scad2d --output-tree filename.scad

the tree will be printed into a file called output.sca2d.

What works

• Parsing most .scad files. We don't yet to extensive testing. Please raise an issue if you find a parsing error in SCA2D.
• Parsing included and used .scad files and checking variable, function, and module usage in different scopes.
• Checking for a minimal number of code errors

What needs work

• The searching for which files to include is very ad-hoc and will fail on all but the most simple examples.
• If a file is missing SCA2D does not handle this gracefully.
• Need to decide a useful set of conventions and rules to check for.
• Messages need to be defined in a separate file rather than included ad-hoc into the code.
• The messaging system is not customisable yet.
• Need to build up a decent set of tests examples, to test that the analysis is working correctly.

How to get involved

The best way to get involved is to find bugs and open and issue. You could also make changes and open a MR, but the code is a little unstructured right now so it may be worth dicussing changes in an issue thread first.