| commit | f93c72c34e1d1d3211c834f2bec432eed47b763a | [log] [tgz] |
|---|---|---|
| author | nharmata <nharmata@google.com> | Fri Mar 13 14:22:10 2020 -0700 |
| committer | Copybara-Service <copybara-worker@google.com> | Fri Mar 13 14:23:18 2020 -0700 |
| tree | f8b144f6e6909dd446dbaf90ed7af468292ffecc | |
| parent | d56f7b12ebad82cabcd7d5957b919a68fe7c04d2 [diff] |
Root: Rather than use @AutoCodec, use a handwritten ObjectCodec that allows us to optimize for the common case of a very popular Root. Our serialization scheme is: We are magically given a likely-to-be-popular Root instance `p` and then whenever we would serialize a Root `r`, we canonicalize `r` to `p` if they are `r.equals(p)`. The Root#fromPath and Root#absoluteRoot methods permit creation of Root instances that are equivalent, and these methods are unfortunately very widely used in the codebase. Therefore, a serialization scheme that tries to make use of Object identity is brittle in the face of future changes. While I'm here, delete Root#getFingerprint. An earlier commit (https://github.com/bazelbuild/bazel/commit/ce6ad29c88084fb327856149a39e2771e544cfa5) made this dead code. RELNOTES: None PiperOrigin-RevId: 300826154
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