[all-commits] [llvm/llvm-project] 718aac: [clang][Diagnostics] Highlight code snippets (#66514)

[Timm Baeder via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 718aac9f7a19227b5c5ec85819a3a5ae24ce32e1
      https://github.com/llvm/llvm-project/commit/718aac9f7a19227b5c5ec85819a3a5ae24ce32e1
  Author: Timm Baeder <tbaeder at redhat.com>
  Date:   2024-01-27 (Sat, 27 Jan 2024)

  Changed paths:
    M clang/docs/ReleaseNotes.rst
    M clang/include/clang/Frontend/TextDiagnostic.h
    M clang/include/clang/Lex/Preprocessor.h
    M clang/lib/Frontend/TextDiagnostic.cpp
    M clang/lib/Frontend/TextDiagnosticPrinter.cpp
    M clang/lib/Lex/Preprocessor.cpp
    A clang/test/Frontend/diagnostic-pipe.c

  Log Message:
  -----------
  [clang][Diagnostics] Highlight code snippets (#66514)

Add some primitive syntax highlighting to our code snippet output.

This adds "checkpoints" to the Preprocessor, which we can use to start lexing from. When printing a code snippet, we lex from the nearest checkpoint and highlight the tokens based on their token type.