[PATCH] D115935: [clang][deps] NFC: Simplify handling of cached FS errors

[Jan Svoboda via Phabricator via cfe-commits]

jansvoboda11 created this revision.
jansvoboda11 added reviewers: Bigcheese, dexonsmith, arphaman.
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The return types of some `CachedFileSystemEntry` member function are needlessly complex.

This patch attempts to simplify the code by unwrapping cached entries that represent errors early, and then asserting `!isError()`.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D115935

Files:
  clang/include/clang/Tooling/DependencyScanning/DependencyScanningFilesystem.h
  clang/lib/Tooling/DependencyScanning/DependencyScanningFilesystem.cpp

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