[clangd] Index API and implementations for relations

Summary:
This builds on the relations support added in D59407, D62459,
and D62471 to expose relations in SymbolIndex and its
implementations.

Reviewers: kadircet

Subscribers: ilya-biryukov, MaskRay, jkorous, arphaman, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D62839

llvm-svn: 363481

1 files changed, 3 insertions, 2 deletions

diff --git a/clang-tools-extra/clangd/unittests/DiagnosticsTests.cpp b/clang-tools-extra/clangd/unittests/DiagnosticsTests.cpp
index 2cbcc936aca..00e77f79963 100644
--- a/clang-tools-extra/clangd/unittests/DiagnosticsTests.cpp
+++ b/clang-tools-extra/clangd/unittests/DiagnosticsTests.cpp
@@ -478,7 +478,7 @@ buildIndexWithSymbol(llvm::ArrayRef<SymbolWithHeader> Syms) {
     Sym.IncludeHeaders.emplace_back(S.IncludeHeader, 1);
     Slab.insert(Sym);
   }
-  return MemIndex::build(std::move(Slab).build(), RefSlab());
+  return MemIndex::build(std::move(Slab).build(), RefSlab(), RelationSlab());
 }
 
 TEST(IncludeFixerTest, IncompleteType) {
@@ -534,7 +534,8 @@ int main() {
 
   SymbolSlab::Builder Slab;
   Slab.insert(Sym);
-  auto Index = MemIndex::build(std::move(Slab).build(), RefSlab());
+  auto Index =
+      MemIndex::build(std::move(Slab).build(), RefSlab(), RelationSlab());
   TU.ExternalIndex = Index.get();
 
   EXPECT_THAT(TU.build().getDiagnostics(),