buslint

A linter for Amazon's Lumberyard to catch common mistakes when using buses. Right now it reports when you forgot to connect a bus when handling it.

First, lets see it in action!

If this doesn't excite you, then you must be a god among programmers. Everyone knows that in Lumberyard, all runtime problems come down to forgetting to connect to a bus!

In the future, the goal will be to do more things. For now, buslint will check at compile time, if you are inheriting a bus handler and then check that you connect to that bus in the source.

Installation

I'm not sure this is the best way to use WAF, so let me know if you know of a better way. However, it's not hard.

Click the releases link above (or just click here ).

Drop the buslint.exe into your dev folder, and drop the buslint.py into the dev\Tools\build\waf-1.7.13\lmbrwaflib folder. Note the version of waf may change in the future.

Now the hardest part. You need to open dev\Tools\build\waf-1.7.13\lmbrwaflib\lumberyard.py and add buslint to the LMBR_WAFLIB_MODULES array, currently around line 140 lumberyard.py

        'lmbr_setup_tools',
        'buslint'

BOOM, you're donzies.

Enabling buslint for a gem

You probably don't want this running on everything, especially the core Lumberyard Gems, so in order to enable it for a specific gem, add the following line to the wscript of said Gem.

win_features = ['buslint']

So as an example, it may look like:

def build(bld):
    bld.DefineGem(
        # Add custom build options here
        includes    = [bld.Path('Code/CryEngine/CryAction')],
        use                     = ['AzGameFramework', 'UR3_Enemies', 'UR3_Base', 'LightningArc'],
        vs_filter               = 'Gems/UR3',
        win_features            = ['buslint'],
    )

Now whenever the files of that gem change, it should rerun buslint on those files.

But I don't want to connect to the bus; you can't make me you can't make me!

That's true, it's a free country. If you want buslint to ignore a specific bus, put //nolint after it

class LevelStateComponent
    : public UR3_Base::NetworkComponent
    , public AzFramework::NetBindable
    , protected UR3_Base::ResourceRequestBus::Handler // nolint

The spacing around the // is optional.

I love buslint and wish to enable it for ALL GEMS!!!

Since WAF is awesome, here you go:

dev\Tools\build\waf-1.7.13\lmbrwaflib\gems.py

Find 'features' under default_settings:

        default_settings = {
...
            'features': ['buslint'],
...
        }

Enjoy naggy buslint everywhere!