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[libclang]: visit BindingDecl in DecompositionDecl 

This makes the BindingDecl accessible to consumers of libclang
as CXCursor_UnexposedDecl where previously these AST nodes were
not visited at all from the libclang API.

Differential Revision: https://reviews.llvm.org/D78213
This commit is contained in:
Milian Wolff 2020-05-02 22:17:59 +02:00 committed by Benjamin Kramer
parent cb9ae0025c
commit 4597e3bd47
3 changed files with 34 additions and 0 deletions
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25
clang/test/Index/cxx17-structured-binding.cpp Normal file
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@ -0,0 +1,25 @@
// Test is line- and column-sensitive; see below.
int main() {
int a[2] = {1, 2};
auto [x, y] = a;
}
// RUN: c-index-test -test-load-source all -std=c++17 %s | FileCheck -check-prefix=CHECK-LOAD %s
// CHECK-LOAD: cxx17-structured-binding.cpp:2:5: FunctionDecl=main:2:5 (Definition) Extent=[2:1 - 5:2]
// CHECK-LOAD: cxx17-structured-binding.cpp:2:12: CompoundStmt= Extent=[2:12 - 5:2]
// CHECK-LOAD: cxx17-structured-binding.cpp:3:3: DeclStmt= Extent=[3:3 - 3:21]
// CHECK-LOAD: cxx17-structured-binding.cpp:3:7: VarDecl=a:3:7 (Definition) Extent=[3:3 - 3:20]
// CHECK-LOAD: cxx17-structured-binding.cpp:3:9: IntegerLiteral= Extent=[3:9 - 3:10]
// CHECK-LOAD: cxx17-structured-binding.cpp:3:14: InitListExpr= Extent=[3:14 - 3:20]
// CHECK-LOAD: cxx17-structured-binding.cpp:3:15: IntegerLiteral= Extent=[3:15 - 3:16]
// CHECK-LOAD: cxx17-structured-binding.cpp:3:18: IntegerLiteral= Extent=[3:18 - 3:19]
// CHECK-LOAD: cxx17-structured-binding.cpp:4:3: DeclStmt= Extent=[4:3 - 4:19]
// CHECK-LOAD: cxx17-structured-binding.cpp:4:8: UnexposedDecl=[x, y]:4:8 (Definition) Extent=[4:3 - 4:18]
// CHECK-LOAD: cxx17-structured-binding.cpp:4:9: UnexposedDecl=x:4:9 (Definition) Extent=[4:9 - 4:10]
// CHECK-LOAD: cxx17-structured-binding.cpp:4:12: UnexposedDecl=y:4:12 (Definition) Extent=[4:12 - 4:13]
// CHECK-LOAD: cxx17-structured-binding.cpp:4:17: UnexposedExpr= Extent=[4:17 - 4:18]
// CHECK-LOAD: cxx17-structured-binding.cpp:4:17: DeclRefExpr=a:3:7 Extent=[4:17 - 4:18]
// CHECK-LOAD: cxx17-structured-binding.cpp:4:17: UnexposedExpr= Extent=[4:17 - 4:9]
// CHECK-LOAD: cxx17-structured-binding.cpp:4:17: ArraySubscriptExpr= Extent=[4:17 - 4:9]
// CHECK-LOAD: cxx17-structured-binding.cpp:4:17: UnexposedExpr=a:3:7 Extent=[4:17 - 4:18]
// CHECK-LOAD: cxx17-structured-binding.cpp:4:17: DeclRefExpr=a:3:7 Extent=[4:17 - 4:18]

8
clang/tools/libclang/CIndex.cpp
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@ -1295,6 +1295,14 @@ bool CursorVisitor::VisitFriendDecl(FriendDecl *D) {
return false;
}
bool CursorVisitor::VisitDecompositionDecl(DecompositionDecl *D) {
for (auto *B : D->bindings()) {
if (Visit(MakeCXCursor(B, TU, RegionOfInterest)))
return true;
}
return VisitVarDecl(D);
}
bool CursorVisitor::VisitDeclarationNameInfo(DeclarationNameInfo Name) {
switch (Name.getName().getNameKind()) {
case clang::DeclarationName::Identifier:

1
clang/tools/libclang/CursorVisitor.h
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@ -241,6 +241,7 @@ public:
bool VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D);
bool VisitStaticAssertDecl(StaticAssertDecl *D);
bool VisitFriendDecl(FriendDecl *D);
bool VisitDecompositionDecl(DecompositionDecl *D);
// Name visitor
bool VisitDeclarationNameInfo(DeclarationNameInfo Name);