| commit | a729b9b4c3d7844a7d44934bf3365f92633c0a60 | [log] [tgz] |
|---|---|---|
| author | tomlu <tomlu@google.com> | Thu Feb 08 15:32:00 2018 -0800 |
| committer | Copybara-Service <copybara-piper@google.com> | Thu Feb 08 15:34:11 2018 -0800 |
| tree | 6329f4baf5b0b83ea6e3bd577b78b8d49afea9f1 | |
| parent | 0ab46f0dd95f735056add4dd8a90a76944b81d00 [diff] |
Replace path implementation. Path and PathFragment have been replaced with String-based implementations. They are pretty similar, but each method is dissimilar enough that I did not feel sharing code was appropriate. A summary of changes: PATH ==== * Subsumes LocalPath (deleted, its tests repurposed) * Use a simple string to back Path * Path instances are no longer interned; Reference equality will no longer work * Always normalized (same as before) * Some operations will now be slower, like instance compares (which were previously just a reference check) * Multiple identical paths will now consume more memory since they are not interned PATH FRAGMENT ============= * Use a simple string to back PathFragment * No more segment arrays with interned strings * Always normalized * Remove isNormalized * Replace some isNormalizied uses with containsUpLevelReferences() to check if path fragments try to escape their scope * To check if user input is normalized, supply static methods on PathFragment to validate the string before constructing a PathFragment * Because PathFragments are always normalized, we have to replace checks for literal "." from PathFragment#getPathString to PathFragment#getSafePathString. The latter returns "." for the empty string. * The previous implementation supported efficient segment semantics (segment count, iterating over segments). This is now expensive since we do longer have a segment array. ARTIFACT ======== * Remove Path instance. It is instead dynamically constructed on request. This is necessary to avoid this CL becoming a memory regression. RELNOTES: None PiperOrigin-RevId: 185062932
{Fast, Correct} - Choose two
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