[all-commits] [llvm/llvm-project] 32c501: Module: Use FileEntryRef and DirectoryEntryRef in ...

[Duncan P. N. Exon Smith via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 32c501dd88b62787d3a5ffda7aabcf4650dbe3cd
      https://github.com/llvm/llvm-project/commit/32c501dd88b62787d3a5ffda7aabcf4650dbe3cd
  Author: Duncan P. N. Exon Smith <dexonsmith at apple.com>
  Date:   2020-12-02 (Wed, 02 Dec 2020)

  Changed paths:
    M clang/include/clang/Basic/DirectoryEntry.h
    M clang/include/clang/Basic/Module.h
    M clang/include/clang/Lex/ModuleMap.h
    M clang/lib/Basic/Module.cpp
    M clang/lib/Frontend/FrontendActions.cpp
    M clang/lib/Lex/ModuleMap.cpp
    M clang/lib/Serialization/ASTReader.cpp

  Log Message:
  -----------
  Module: Use FileEntryRef and DirectoryEntryRef in Umbrella, Header, and DirectoryName, NFC

Push `FileEntryRef` and `DirectoryEntryRef` further, using it them
`Module::Umbrella`, `Module::Header::Entry`, and
`Module::DirectoryName::Entry`.

- Add `DirectoryEntryRef::operator const DirectoryEntry *` and
  `OptionalDirectoryEntryRefDegradesToDirectoryEntryPtr`, to get the
  same "degrades to `DirectoryEntry*` behaviour `FileEntryRef` enjoys
  (this avoids a bunch of churn in various clang tools).
- Fix the `DirectoryEntryRef` constructor from `MapEntry` to take it by
  `const&`.

Note that we cannot get rid of the `...AsWritten` names leveraging the
new classes, since these need to be as written in the `ModuleMap` file
and the module directory path is preprended for the lookup in the
`FileManager`.

Differential Revision: https://reviews.llvm.org/D90497