Summary:
SelectionTree is a RecursiveASTVisitor which processes getSourceRange() for
every node. This is a lot of surface area with the AST, as getSourceRange()
is specialized for *many* node types.
And the resulting SelectionTree depends on the source ranges of many
visited nodes, and the order of traversal.
Put together, this means we really need a traversal log to debug when we
get an unexpected SelectionTree. I've built this ad-hoc a few times, now
it's time to check it in.
Example output:
```
D[14:07:44.184] Computing selection for </usr/local/google/home/sammccall/test.cc:1:7, col:8>
D[14:07:44.184] push: VarDecl const auto x = 42
D[14:07:44.184] claimRange: </usr/local/google/home/sammccall/test.cc:1:12, col:13>
D[14:07:44.184] push: NestedNameSpecifierLoc (empty NestedNameSpecifierLoc)
D[14:07:44.184] pop: NestedNameSpecifierLoc (empty NestedNameSpecifierLoc)
D[14:07:44.184] push: QualifiedTypeLoc const auto
D[14:07:44.184] pop: QualifiedTypeLoc const auto
D[14:07:44.184] claimRange: </usr/local/google/home/sammccall/test.cc:1:7, col:11>
D[14:07:44.184] hit selection: </usr/local/google/home/sammccall/test.cc:1:7, col:8>
D[14:07:44.184] skip: IntegerLiteral 42
D[14:07:44.184] skipped range = </usr/local/google/home/sammccall/test.cc:1:16>
D[14:07:44.184] pop: VarDecl const auto x = 42
D[14:07:44.184] claimRange: </usr/local/google/home/sammccall/test.cc:1:1, col:18>
D[14:07:44.184] skip: VarDecl int y = 43
D[14:07:44.184] skipped range = </usr/local/google/home/sammccall/test.cc:2:1, col:9>
D[14:07:44.184] Built selection tree
TranslationUnitDecl
VarDecl const auto x = 42
.QualifiedTypeLoc const auto
```
Reviewers: hokein
Subscribers: ilya-biryukov, MaskRay, jkorous, arphaman, kadircet, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D65073
llvm-svn: 366698
Add a tweak for clangd to replace an auto keyword to the deduced type.
This way a user can declare something with auto and then have the
IDE/clangd replace auto with whatever type clangd thinks it is. In case
of long/complext types this makes is reduces writing effort for the
user.
The functionality is similar to the hover over the auto keyword.
Example (from the header):
```
/// Before:
/// auto x = Something();
/// ^^^^
/// After:
/// MyClass x = Something();
/// ^^^^^^^
```
Patch by kuhnel! (Christian Kühnel)
Differential Revision: https://reviews.llvm.org/D62855
llvm-svn: 365792
Summary:
The primary problem this solves is to expose the codeAction selection to
AST-based refactorings in a way that makes it easy and efficient for them to
bind to the right parts of the AST.
It should also allow us to make XRefs based features (textDocument/definition)
more robust, more easily implement textDocument/typeDefinition etc.
As an example, template parameter references can be identified without special
handling.
There should be slight speedup too: we can prune most of the AST traversal
in most cases.
Elephant in the room: this is similar-but-different to Tooling/Refactoring/ASTSelection.
That captures a smaller set of AST nodes, has a slightly different way of
representing selections, and generally has mare features and does more work.
The overall shape is pretty similar, and yet I can't quite get to behave as I
expect.
Reviewers: ilya-biryukov, kadircet
Subscribers: mgorny, ioeric, MaskRay, jkorous, mgrang, arphaman
Tags: #clang
Differential Revision: https://reviews.llvm.org/D57562
llvm-svn: 352874
Sam McCall