[clang] [clang][DependencyScanning] Implementation of `CompilerInstanceWithContext` to Improve By-Name Queries (PR #164345)

[Jan Svoboda via cfe-commits]

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@@ -149,6 +151,52 @@ std::shared_ptr<ModuleDepCollector> initializeScanInstanceDependencyCollector(
     DependencyActionController &Controller,
     PrebuiltModulesAttrsMap PrebuiltModulesASTMap,
     llvm::SmallVector<StringRef> &StableDirs);
+
+class CompilerInstanceWithContext {
+  // Context
+  DependencyScanningWorker &Worker;
+  llvm::StringRef CWD;
+  std::vector<std::string> CommandLine;
+  static const uint64_t MAX_NUM_NAMES = (1 << 12);
+  static const std::string FakeFileBuffer;
+
+  // Context - file systems
+  llvm::IntrusiveRefCntPtr<llvm::vfs::OverlayFileSystem> OverlayFS;
+
+  // Context - Diagnostics engine.
+  std::unique_ptr<TextDiagnosticsPrinterWithOutput> DiagPrinterWithOS;
+  std::unique_ptr<DignosticsEngineWithDiagOpts> DiagEngineWithCmdAndOpts;
+
+  // Context - compiler invocation
+  std::unique_ptr<clang::driver::Driver> Driver;
+  std::unique_ptr<clang::driver::Compilation> Compilation;
+  std::unique_ptr<CompilerInvocation> Invocation;
+  llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem> VFSFromCompilerInvocation;
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jansvoboda11 wrote:

This seems dead.

https://github.com/llvm/llvm-project/pull/164345