[yast-devel] Ruby Call Graph

[Martin Vidner]

https://github.com/mvidner/call-graph

# Call Graph

This makes a call graph among methods of a single Ruby file.

I made it to help me orient myself in unfamiliar legacy code and to
help identify cohesive parts that could be split out.

Yes, it is quick and dirty.

## Requirements

- [parser gem](https://github.com/whitequark/parser)
- [Graphviz](http://www.graphviz.org/)

## License

MIT

## Example

[One file in YaST][p-rb] has around 2700 lines and 73 methods. The
call graph below was made with
```console
$ ./call-graph ../yast/packager/src/modules/Packages.rb
$ dot -Tpng -oPackages.png ../yast/packager/src/modules/Packages.dot
```

If the resulting size is too big, use ImageMagick:
```console
$ convert Packages.png -resize 1200 Packages-small.png
```

[p-rb]:
https://github.com/yast/yast-packager/blob/a0b38c046e6e4086a986047d0d7cd5d155af5024/src/modules/Packages.rb

![Packages.png,
an example 
output](https://github.com/mvidner/call-graph/blob/master/example.png)

-- 
Martin Vidner, YaST Team
http://en.opensuse.org/User:Mvidner

Kuracke oddeleni v restauraci je jako fekalni oddeleni v bazenu

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