[PATCH] D23848: Add a clang-tidy Visual Studio extension

[Zachary Turner via cfe-commits]

zturner added inline comments.

================
Comment at: clang-tidy-vs/ClangTidy/CheckTree.cs:67
@@ +66,3 @@
+                if (ParentPath == null)
+                    return Name_;
+                return ParentPath + "-" + Name_;
----------------
amccarth wrote:
> This seems overly complicated so I assume I'm missing some nuance.  Why not:
> 
>     if (Parent_ == null)
>         return Name_;
>     string ParentPath = Parent_.Path;
> 
> Is there a case where Parent_.Path could return null besides the one that you created?
> 
> 
If `Parent_ == null`, that is the root note, or default node.  It doesn't represent any particualr check, it's just the node at the top of the tree containing all the branches.  So we have to return `null` in that case.  We could probably return `Name_` as it would probably be equal to `null`, but it seems more clear to just return a constant.

Even if `Parent_` is not `null` though, `Parent_.Path` could equal `null`.  This would happen for any node immediately under the root, because the parent would be the root, and by the previous explanation, `Parent_.Path` would then return `null`.  So, for top-level check nodes we just want to return the name, because there is nothing before it to prepend a `-` to.

For deeper nodes though, we want to get the path from the parent, then join it with a `-`.  


https://reviews.llvm.org/D23848