[PATCH] D85439: [SyntaxTree] Expand support for `NestedNameSpecifier`

[Eduardo Caldas via Phabricator via cfe-commits]

eduucaldas created this revision.
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We want NestedNameSpecifier syntax nodes to be generally supported, not
only for `DeclRefExpr` and `DependentScopedDeclRefExpr`.

To achieve this we:

- Use the `RecursiveASTVisitor`'s API to traverse

`NestedNameSpecifierLoc`s and automatically create its syntax nodes

- Add links from the `NestedNameSpecifierLoc`s to their syntax nodes.

In this way, from any semantic construct that has a `NestedNameSpecifier`,
we implicitly generate its syntax node via RAV and we can easily access
this syntax node via the links we added.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D85439

Files:
  clang/lib/Tooling/Syntax/BuildTree.cpp
  clang/unittests/Tooling/Syntax/TreeTest.cpp

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