Jiaming Yuan 8bdf15120a
Implement tree model dump with code generator. (#4602)
* Implement tree model dump with a code generator.

* Split up generators.
* Implement graphviz generator.
* Use pattern matching.

* [Breaking] Return a Source in `to_graphviz` instead of Digraph in Python package.


Co-Authored-By: Philip Hyunsu Cho <chohyu01@cs.washington.edu>
2019-06-26 15:20:44 +08:00
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2018-10-01 01:29:03 +13:00