[PATCH] D93436: [clangd] Print .clang-tidy configuration parsing errors using [ev]?log.

[Nathan James via Phabricator via cfe-commits]

njames93 created this revision.
njames93 added a reviewer: sammccall.
Herald added subscribers: usaxena95, kadircet, arphaman.
njames93 requested review of this revision.
Herald added subscribers: cfe-commits, MaskRay, ilya-biryukov.
Herald added a project: clang.

Currently warnings when parsing .clang-tidy are printed directly to errs.
This is less than ideal as there is no synchronisation printing to errs, leading to potential races.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D93436

Files:
  clang-tools-extra/clangd/TidyProvider.cpp


Index: clang-tools-extra/clangd/TidyProvider.cpp
===================================================================
--- clang-tools-extra/clangd/TidyProvider.cpp
+++ clang-tools-extra/clangd/TidyProvider.cpp
@@ -19,6 +19,7 @@
 #include "llvm/Support/Allocator.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/Process.h"
+#include "llvm/Support/SourceMgr.h"
 #include "llvm/Support/VirtualFileSystem.h"
 #include <memory>
 
@@ -44,8 +45,25 @@
         [this](llvm::Optional<llvm::StringRef> Data) {
           Value.reset();
           if (Data && !Data->empty()) {
-            if (auto Parsed = tidy::parseConfiguration(
-                    llvm::MemoryBufferRef(*Data, path())))
+            tidy::DiagCallback Diagnostics = [](const llvm::SMDiagnostic &D) {
+              switch (D.getKind()) {
+              case llvm::SourceMgr::DK_Error:
+                elog("tidy-config error at {0}:{1}:{2}: {3}", D.getFilename(),
+                     D.getLineNo(), D.getColumnNo(), D.getMessage());
+                break;
+              case llvm::SourceMgr::DK_Warning:
+                log("tidy-config warning at {0}:{1}:{2}: {3}", D.getFilename(),
+                    D.getLineNo(), D.getColumnNo(), D.getMessage());
+                break;
+              case llvm::SourceMgr::DK_Note:
+              case llvm::SourceMgr::DK_Remark:
+                vlog("tidy-config note at {0}:{1}:{2}: {3}", D.getFilename(),
+                     D.getLineNo(), D.getColumnNo(), D.getMessage());
+                break;
+              }
+            };
+            if (auto Parsed = tidy::parseConfigurationWithDiags(
+                    llvm::MemoryBufferRef(*Data, path()), Diagnostics))
               Value = std::make_shared<const tidy::ClangTidyOptions>(
                   std::move(*Parsed));
             else


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