[PATCH] D89398: Lexer: Update the Lexer to use MemoryBufferRef, NFC

[Duncan P. N. Exon Smith via Phabricator via cfe-commits]

dexonsmith created this revision.
dexonsmith added a reviewer: arphaman.
Herald added subscribers: usaxena95, ributzka, kadircet.
dexonsmith requested review of this revision.

Update `Lexer` / `Lexer::Lexer` to use `MemoryBufferRef` instead of
`MemoryBuffer*`. Callers that were acquiring a `MemoryBuffer*` via
`SourceManager::getBuffer` were updated, such that if they checked
`Invalid` they use `getBufferOrNone` and otherwise `getBufferOrFake`.


https://reviews.llvm.org/D89398

Files:
  clang-tools-extra/clangd/Format.cpp
  clang/include/clang/Lex/Lexer.h
  clang/lib/Format/FormatTokenLexer.cpp
  clang/lib/Frontend/FrontendAction.cpp
  clang/lib/Frontend/FrontendActions.cpp
  clang/lib/Frontend/Rewrite/InclusionRewriter.cpp
  clang/lib/Frontend/Rewrite/RewriteMacros.cpp
  clang/lib/Frontend/VerifyDiagnosticConsumer.cpp
  clang/lib/Lex/Lexer.cpp
  clang/lib/Lex/PPLexerChange.cpp
  clang/lib/Rewrite/HTMLRewrite.cpp
  clang/lib/Rewrite/TokenRewriter.cpp
  clang/lib/Tooling/Inclusions/HeaderIncludes.cpp

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