Historically we've used copy-cat to provide a web-based emulator for
running example code on our documentation site. However, copy-cat is
often out-of-date with CC:T, which means example snippets fail when you
try to run them!
This commit vendors in copy-cat (or rather an updated version of it)
into CC:T itself, allowing us to ensure the emulator is always in sync
with the mod.
While the ARCHITECTURE.md documentation goes into a little bit more
detail here, the general implementation is as follows
- In project/src/main we implement the core of the emulator. This
includes a basic reimplementation of some of CC's classes to work on
the web (mostly the HTTP API and ComputerThread), and some additional
code to expose the computers to Javascript.
- This is all then compiled to Javascript using [TeaVM][1] (we actually
use a [personal fork of it][2] as there's a couple of changes I've
not upstreamed yet).
- The Javascript side then pulls in the these compiled classes (and
the CC ROM) and hooks them up to [cc-web-term][3] to display the
actual computer.
- As we're no longer pulling in copy-cat, we can simplify our bundling
system a little - we now just compile to ESM modules directly.
[1]: https://github.com/konsoletyper/teavm
[2]: https://github.com/SquidDev/teavm/tree/squid-patches
[3]: https://github.com/squiddev-cc/cc-web-term
This adds SPDX license headers to all source code files, following the
REUSE[1] specification. This does not include any asset files (such as
generated JSON files, or textures). While REUSE does support doing so
with ".license" files, for now we define these licences using the
.reuse/dep5 file.
[1]: https://reuse.software/
illuaminate does not handle Java files, for obvious reasons. In order to
get around that, we have a series of stub files within /doc/stub which
mirrored the Java ones. While this works, it has a few problems:
- The link to source code does not work - it just links to the stub
file.
- There's no guarantee that documentation remains consistent with the
Java code. This change found several methods which were incorrectly
documented beforehand.
We now replace this with a custom Java doclet[1], which extracts doc
comments from @LuaFunction annotated methods and generates stub-files
from them. These also contain a @source annotation, which allows us to
correctly link them back to the original Java code.
There's some issues with this which have yet to be fixed. However, I
don't think any of them are major blockers right now:
- The custom doclet relies on Java 9 - I think it's /technically/
possible to do this on Java 8, but the API is significantly uglier.
This means that we need to run javadoc on a separate JVM.
This is possible, and it works locally and on CI, but is definitely
not a nice approach.
- illuaminate now requires the doc stubs to be generated in order for
the linter to pass, which does make running the linter locally much
harder (especially given the above bullet point).
We could notionally include the generated stubs (or at least a cut
down version of them) in the repo, but I'm not 100% sure about that.
[1]: https://docs.oracle.com/javase/9/docs/api/jdk/javadoc/doclet/package-summary.html
- Adds a CheckStyle configuration which is pretty similar to CC's
existing one.
- Add the Gradle license plugin.
- Ensure the existing source code is compatible with these additional
checks.
See #239
