Duncan P. N. Exon Smith b3eff6b7bb Lexer: Update the Lexer to use MemoryBufferRef, NFC ...

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`.

Differential Revision: https://reviews.llvm.org/D89398

2020-10-19 19:10:21 -04:00

3.2 KiB

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