Graphviz generator crashes on sizeof<> expressions

[jtbandes]

The following definition crashes the graphviz generator:

meta:
  id: asdf
  file-extension: asdf

seq:
  - id: x
    size: sizeof<xx>
    
types:
  xx:
    seq:
      - id: a
        type: u1

I believe the problem is that this match doesn't handle sizeofs.

This is preventing log/mcap.ksy from having a svg generated at https://formats.kaitai.io/mcap/

[jtbandes]

@generalmimon Thanks for fixing this! I still see a crash when I test it out on ide.kaitai.io, but guessing this just means the new version hasn't been deployed yet. Looking forward to it :)

[generalmimon]

@jtbandes:

I still see a crash when I test it out on ide.kaitai.io, but guessing this just means the new version hasn't been deployed yet.

Correct. As noted at https://doc.kaitai.io/user_guide.html#web-ide, https://ide.kaitai.io/ hosts the latest "stable" Web IDE and compiler version, so it uses the released KSC 0.10.

https://ide.kaitai.io/devel/ is supposed to have the latest development version of KSC, but unfortunately it has a half-year old compiler at this point. In the past, there used to be a script that automatically triggered a rebuild of the Web IDE when a new version of KSC was available, but it was written for Travis CI and we migrated to GitHub Actions since then (see kaitai-io/kaitai_struct_webide@0a79a8e), but we haven't migrated the script that would trigger the Web IDE rebuild yet. I want to get around to it someday, but I don't know when that will be.

In the meantime, you can build the compiler from source (but checkout the default master branch, not serialization) to try out the development version of KSC before it is released.

[jtbandes]

Here's a proposal for how to migrate the auto-rebuild behavior:

• Add repository_dispatch trigger kaitai_struct_webide#181
• Trigger ide.kaitai.io/devel rebuild after NPM publish #1124