[PATCH] D94031: [ASTMatchers] Fix child traversal over range-for loops

Aaron Ballman via Phabricator via cfe-commits cfe-commits at lists.llvm.org
Tue Jan 5 09:59:54 PST 2021


aaron.ballman added inline comments.


================
Comment at: clang/lib/ASTMatchers/ASTMatchFinder.cpp:245
+    ScopedIncrement ScopedDepth(&CurrentDepth);
+    if (!match(*Node->getLoopVariable()) || !match(*Node->getRangeInit()) ||
+        !match(*Node->getBody()))
----------------
steveire wrote:
> aaron.ballman wrote:
> > Should we be traversing the init statement before the loop variable so that the traversals happen in lexical order?
> Do you mean that in 
> 
> ```
> for (auto i : arr)
> {
> }
> ```
> 
> to visit the `arr` before the `auto i`? 
> 
> I think visiting the `auto i` before the `arr` makes sense.
Nope, I mean that in:
```
for (int i = 12; auto j : {1, 2, 3, 4}) {}
```
we should visit the `int i = 12;` before the `auto j`


Repository:
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CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D94031/new/

https://reviews.llvm.org/D94031



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