tree 88be91f0c39464203a9604096cf3cf105b26a407
parent 40172cf2d09bc64e739975805f4ab24cc5f46b0b
author Giuliano Procida <gprocida@google.com> 1647519271 +0000
committer Giuliano Procida <gprocida@google.com> 1648565311 +0100

Move Removed, Added and Compare out of Type

Various things ended up in the `Type` type (the graph node base class)
as there was no better home for them at the time (and no `Graph` type
in particular).

This includes:

* the top-level comparison functions `Removed`, `Added` and `Compare`
* the `GetTypes` access function
* the `GetType` access function
* a reference to the node array

The comparison functions have no dependency on `Type` other than access
to the `Equals` virtual member function. This commit moves them out
and makes `Equals` public instead of protected.

Later changes will deal with the node array and its access functions.

PiperOrigin-RevId: 435316635
Change-Id: I0e2d79cab9580d40a5a23c39956a7b1e81d58323