Create clang-tidy check to rename all our includes

It is a little bit scuffed, but it seems to produce correct results. We
can run it at a later date when we want to explode every in-flight
commit in existence and then need to filter-branch them.

Fixes: https://git.lix.systems/lix-project/lix/issues/188

Change-Id: Id97e4651f78804a941d941df02c7c1b21ce453b6

1 files changed, 21 insertions, 0 deletions

diff --git a/clang-tidy/FixIncludes.hh b/clang-tidy/FixIncludes.hh
new file mode 100644
index 000000000..ea890cd39
--- /dev/null
+++ b/clang-tidy/FixIncludes.hh
@@ -0,0 +1,21 @@
+#pragma once
+///@file
+
+#include <clang-tidy/ClangTidyCheck.h>
+#include <clang/ASTMatchers/ASTMatchFinder.h>
+#include <llvm/ADT/StringRef.h>
+
+namespace nix::clang_tidy {
+
+using namespace clang;
+using namespace clang::tidy;
+
+class FixIncludesCheck : public ClangTidyCheck {
+    public:
+    FixIncludesCheck(StringRef Name, ClangTidyContext *Context)
+            : ClangTidyCheck(Name, Context) {}
+
+    void registerPPCallbacks(const SourceManager &SM, Preprocessor *PP, Preprocessor *ModuleExpanderPP) override;
+};
+
+};