[clangd] Support clang-tidy configuration in clangd.

Summary:
This patch adds some basic supports for clang-tidy configurations in clangd:
      - clangd will respect .clang-tidy configurations for each file
      - we don't aim to support all clang-tidy options in clangd, only a
        small subset of condfigurations (options related to which checks will be
        enabled) are supported.
      - add a `clang-tidy-checks` CLI option that can override options from
        .clang-tidy file

Reviewers: ilya-biryukov, sammccall

Reviewed By: sammccall

Subscribers: javed.absar, ioeric, MaskRay, jkorous, arphaman, kadircet, cfe-commits

Differential Revision: https://reviews.llvm.org/D55256

llvm-svn: 351792

1 files changed, 4 insertions, 1 deletions

diff --git a/clang-tools-extra/clangd/ClangdUnit.h b/clang-tools-extra/clangd/ClangdUnit.h
index abcefdb6bf6..3a4841d7080 100644
--- a/clang-tools-extra/clangd/ClangdUnit.h
+++ b/clang-tools-extra/clangd/ClangdUnit.h
@@ -9,6 +9,7 @@
 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANGD_CLANGDUNIT_H
 #define LLVM_CLANG_TOOLS_EXTRA_CLANGD_CLANGDUNIT_H
 
+#include "../clang-tidy/ClangTidyOptions.h"
 #include "Diagnostics.h"
 #include "FS.h"
 #include "Function.h"
@@ -64,6 +65,7 @@ struct ParseInputs {
   tooling::CompileCommand CompileCommand;
   IntrusiveRefCntPtr<llvm::vfs::FileSystem> FS;
   std::string Contents;
+  tidy::ClangTidyOptions ClangTidyOpts;
 };
 
 /// Stores and provides access to parsed AST.
@@ -76,7 +78,8 @@ public:
         std::shared_ptr<const PreambleData> Preamble,
         std::unique_ptr<llvm::MemoryBuffer> Buffer,
         std::shared_ptr<PCHContainerOperations> PCHs,
-        IntrusiveRefCntPtr<llvm::vfs::FileSystem> VFS);
+        IntrusiveRefCntPtr<llvm::vfs::FileSystem> VFS,
+        const tidy::ClangTidyOptions &ClangTidyOpts);
 
   ParsedAST(ParsedAST &&Other);
   ParsedAST &operator=(ParsedAST &&Other);