[PATCH] D45482: [clangd] Match AST and Index label for template Symbols

2018-04-13 Thread Phabricator via Phabricator via cfe-commits
This revision was automatically updated to reflect the committed changes.
Closed by commit rL330004: [clangd] Match AST and Index label for template 
Symbols (authored by ibiryukov, committed by ).
Herald added a subscriber: llvm-commits.

Repository:
  rL LLVM

https://reviews.llvm.org/D45482

Files:
  clang-tools-extra/trunk/clangd/index/SymbolCollector.cpp
  clang-tools-extra/trunk/unittests/clangd/FileIndexTests.cpp


Index: clang-tools-extra/trunk/unittests/clangd/FileIndexTests.cpp
===
--- clang-tools-extra/trunk/unittests/clangd/FileIndexTests.cpp
+++ clang-tools-extra/trunk/unittests/clangd/FileIndexTests.cpp
@@ -195,6 +195,44 @@
   EXPECT_TRUE(SeenSymbol);
 }
 
+TEST(FileIndexTest, TemplateParamsInLabel) {
+  auto Source = R"cpp(
+template 
+class vector {
+};
+
+template 
+vector make_vector(Ty* begin, Ty* end) {}
+)cpp";
+
+  FileIndex M;
+  M.update("f", build("f", Source).getPointer());
+
+  FuzzyFindRequest Req;
+  Req.Query = "";
+  bool SeenVector = false;
+  bool SeenMakeVector = false;
+  M.fuzzyFind(Req, [&](const Symbol ) {
+if (Sym.Name == "vector") {
+  EXPECT_EQ(Sym.CompletionLabel, "vector");
+  EXPECT_EQ(Sym.CompletionSnippetInsertText, "vector<${1:class Ty}>");
+  EXPECT_EQ(Sym.CompletionPlainInsertText, "vector");
+  SeenVector = true;
+  return;
+}
+
+if (Sym.Name == "make_vector") {
+  EXPECT_EQ(Sym.CompletionLabel, "make_vector(Ty *begin, Ty *end)");
+  EXPECT_EQ(Sym.CompletionSnippetInsertText,
+"make_vector(${1:Ty *begin}, ${2:Ty *end})");
+  EXPECT_EQ(Sym.CompletionPlainInsertText, "make_vector");
+  SeenMakeVector = true;
+}
+  });
+  EXPECT_TRUE(SeenVector);
+  EXPECT_TRUE(SeenMakeVector);
+}
+
 } // namespace
 } // namespace clangd
 } // namespace clang
Index: clang-tools-extra/trunk/clangd/index/SymbolCollector.cpp
===
--- clang-tools-extra/trunk/clangd/index/SymbolCollector.cpp
+++ clang-tools-extra/trunk/clangd/index/SymbolCollector.cpp
@@ -14,6 +14,7 @@
 #include "../URI.h"
 #include "CanonicalIncludes.h"
 #include "clang/AST/DeclCXX.h"
+#include "clang/AST/DeclTemplate.h"
 #include "clang/ASTMatchers/ASTMatchFinder.h"
 #include "clang/Basic/SourceManager.h"
 #include "clang/Index/IndexSymbol.h"
@@ -26,6 +27,19 @@
 namespace clangd {
 
 namespace {
+/// If \p ND is a template specialization, returns the primary template.
+/// Otherwise, returns \p ND.
+const NamedDecl (const NamedDecl ) {
+  if (auto Cls = dyn_cast()) {
+if (auto T = Cls->getDescribedTemplate())
+  return *T;
+  } else if (auto Func = dyn_cast()) {
+if (auto T = Func->getPrimaryTemplate())
+  return *T;
+  }
+  return ND;
+}
+
 // Returns a URI of \p Path. Firstly, this makes the \p Path absolute using the
 // current working directory of the given SourceManager if the Path is not an
 // absolute path. If failed, this resolves relative paths against \p 
FallbackDir
@@ -325,7 +339,8 @@
   // Add completion info.
   // FIXME: we may want to choose a different redecl, or combine from several.
   assert(ASTCtx && PP.get() && "ASTContext and Preprocessor must be set.");
-  CodeCompletionResult SymbolCompletion(, 0);
+  // We use the primary template, as clang does during code completion.
+  CodeCompletionResult SymbolCompletion((ND), 0);
   const auto *CCS = SymbolCompletion.CreateCodeCompletionString(
   *ASTCtx, *PP, CodeCompletionContext::CCC_Name, *CompletionAllocator,
   *CompletionTUInfo,


Index: clang-tools-extra/trunk/unittests/clangd/FileIndexTests.cpp
===
--- clang-tools-extra/trunk/unittests/clangd/FileIndexTests.cpp
+++ clang-tools-extra/trunk/unittests/clangd/FileIndexTests.cpp
@@ -195,6 +195,44 @@
   EXPECT_TRUE(SeenSymbol);
 }
 
+TEST(FileIndexTest, TemplateParamsInLabel) {
+  auto Source = R"cpp(
+template 
+class vector {
+};
+
+template 
+vector make_vector(Ty* begin, Ty* end) {}
+)cpp";
+
+  FileIndex M;
+  M.update("f", build("f", Source).getPointer());
+
+  FuzzyFindRequest Req;
+  Req.Query = "";
+  bool SeenVector = false;
+  bool SeenMakeVector = false;
+  M.fuzzyFind(Req, [&](const Symbol ) {
+if (Sym.Name == "vector") {
+  EXPECT_EQ(Sym.CompletionLabel, "vector");
+  EXPECT_EQ(Sym.CompletionSnippetInsertText, "vector<${1:class Ty}>");
+  EXPECT_EQ(Sym.CompletionPlainInsertText, "vector");
+  SeenVector = true;
+  return;
+}
+
+if (Sym.Name == "make_vector") {
+  EXPECT_EQ(Sym.CompletionLabel, "make_vector(Ty *begin, Ty *end)");
+  EXPECT_EQ(Sym.CompletionSnippetInsertText,
+"make_vector(${1:Ty *begin}, ${2:Ty *end})");
+  EXPECT_EQ(Sym.CompletionPlainInsertText, "make_vector");
+  SeenMakeVector = true;
+}
+  });
+  EXPECT_TRUE(SeenVector);
+  EXPECT_TRUE(SeenMakeVector);
+}
+
 } // namespace
 } // namespace clangd
 } // namespace 

[PATCH] D45482: [clangd] Match AST and Index label for template Symbols

2018-04-13 Thread Ilya Biryukov via Phabricator via cfe-commits
ilya-biryukov added inline comments.



Comment at: unittests/clangd/FileIndexTests.cpp:218
+  EXPECT_EQ(Sym.CompletionLabel, "vector");
+  EXPECT_EQ(Sym.CompletionSnippetInsertText, "vector<${1:class Ty}>");
+  SeenVector = true;

sammccall wrote:
> If snippets are off, we'll get "vector", not "vector<>", right?
> 
> (Probably no need to test this explicitly, but I just want to be sure)
Yes, that's exactly the case.
Testing doesn't hurt too, added a test.


Repository:
  rCTE Clang Tools Extra

https://reviews.llvm.org/D45482



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[PATCH] D45482: [clangd] Match AST and Index label for template Symbols

2018-04-13 Thread Phabricator via Phabricator via cfe-commits
This revision was automatically updated to reflect the committed changes.
Closed by commit rCTE330004: [clangd] Match AST and Index label for template 
Symbols (authored by ibiryukov, committed by ).

Changed prior to commit:
  https://reviews.llvm.org/D45482?vs=142372=142373#toc

Repository:
  rL LLVM

https://reviews.llvm.org/D45482

Files:
  clangd/index/SymbolCollector.cpp
  unittests/clangd/FileIndexTests.cpp


Index: clangd/index/SymbolCollector.cpp
===
--- clangd/index/SymbolCollector.cpp
+++ clangd/index/SymbolCollector.cpp
@@ -14,6 +14,7 @@
 #include "../URI.h"
 #include "CanonicalIncludes.h"
 #include "clang/AST/DeclCXX.h"
+#include "clang/AST/DeclTemplate.h"
 #include "clang/ASTMatchers/ASTMatchFinder.h"
 #include "clang/Basic/SourceManager.h"
 #include "clang/Index/IndexSymbol.h"
@@ -26,6 +27,19 @@
 namespace clangd {
 
 namespace {
+/// If \p ND is a template specialization, returns the primary template.
+/// Otherwise, returns \p ND.
+const NamedDecl (const NamedDecl ) {
+  if (auto Cls = dyn_cast()) {
+if (auto T = Cls->getDescribedTemplate())
+  return *T;
+  } else if (auto Func = dyn_cast()) {
+if (auto T = Func->getPrimaryTemplate())
+  return *T;
+  }
+  return ND;
+}
+
 // Returns a URI of \p Path. Firstly, this makes the \p Path absolute using the
 // current working directory of the given SourceManager if the Path is not an
 // absolute path. If failed, this resolves relative paths against \p 
FallbackDir
@@ -325,7 +339,8 @@
   // Add completion info.
   // FIXME: we may want to choose a different redecl, or combine from several.
   assert(ASTCtx && PP.get() && "ASTContext and Preprocessor must be set.");
-  CodeCompletionResult SymbolCompletion(, 0);
+  // We use the primary template, as clang does during code completion.
+  CodeCompletionResult SymbolCompletion((ND), 0);
   const auto *CCS = SymbolCompletion.CreateCodeCompletionString(
   *ASTCtx, *PP, CodeCompletionContext::CCC_Name, *CompletionAllocator,
   *CompletionTUInfo,
Index: unittests/clangd/FileIndexTests.cpp
===
--- unittests/clangd/FileIndexTests.cpp
+++ unittests/clangd/FileIndexTests.cpp
@@ -195,6 +195,44 @@
   EXPECT_TRUE(SeenSymbol);
 }
 
+TEST(FileIndexTest, TemplateParamsInLabel) {
+  auto Source = R"cpp(
+template 
+class vector {
+};
+
+template 
+vector make_vector(Ty* begin, Ty* end) {}
+)cpp";
+
+  FileIndex M;
+  M.update("f", build("f", Source).getPointer());
+
+  FuzzyFindRequest Req;
+  Req.Query = "";
+  bool SeenVector = false;
+  bool SeenMakeVector = false;
+  M.fuzzyFind(Req, [&](const Symbol ) {
+if (Sym.Name == "vector") {
+  EXPECT_EQ(Sym.CompletionLabel, "vector");
+  EXPECT_EQ(Sym.CompletionSnippetInsertText, "vector<${1:class Ty}>");
+  EXPECT_EQ(Sym.CompletionPlainInsertText, "vector");
+  SeenVector = true;
+  return;
+}
+
+if (Sym.Name == "make_vector") {
+  EXPECT_EQ(Sym.CompletionLabel, "make_vector(Ty *begin, Ty *end)");
+  EXPECT_EQ(Sym.CompletionSnippetInsertText,
+"make_vector(${1:Ty *begin}, ${2:Ty *end})");
+  EXPECT_EQ(Sym.CompletionPlainInsertText, "make_vector");
+  SeenMakeVector = true;
+}
+  });
+  EXPECT_TRUE(SeenVector);
+  EXPECT_TRUE(SeenMakeVector);
+}
+
 } // namespace
 } // namespace clangd
 } // namespace clang


Index: clangd/index/SymbolCollector.cpp
===
--- clangd/index/SymbolCollector.cpp
+++ clangd/index/SymbolCollector.cpp
@@ -14,6 +14,7 @@
 #include "../URI.h"
 #include "CanonicalIncludes.h"
 #include "clang/AST/DeclCXX.h"
+#include "clang/AST/DeclTemplate.h"
 #include "clang/ASTMatchers/ASTMatchFinder.h"
 #include "clang/Basic/SourceManager.h"
 #include "clang/Index/IndexSymbol.h"
@@ -26,6 +27,19 @@
 namespace clangd {
 
 namespace {
+/// If \p ND is a template specialization, returns the primary template.
+/// Otherwise, returns \p ND.
+const NamedDecl (const NamedDecl ) {
+  if (auto Cls = dyn_cast()) {
+if (auto T = Cls->getDescribedTemplate())
+  return *T;
+  } else if (auto Func = dyn_cast()) {
+if (auto T = Func->getPrimaryTemplate())
+  return *T;
+  }
+  return ND;
+}
+
 // Returns a URI of \p Path. Firstly, this makes the \p Path absolute using the
 // current working directory of the given SourceManager if the Path is not an
 // absolute path. If failed, this resolves relative paths against \p FallbackDir
@@ -325,7 +339,8 @@
   // Add completion info.
   // FIXME: we may want to choose a different redecl, or combine from several.
   assert(ASTCtx && PP.get() && "ASTContext and Preprocessor must be set.");
-  CodeCompletionResult SymbolCompletion(, 0);
+  // We use the primary template, as clang does during code completion.
+  CodeCompletionResult SymbolCompletion((ND), 0);
   const auto *CCS = SymbolCompletion.CreateCodeCompletionString(
   *ASTCtx, 

[PATCH] D45482: [clangd] Match AST and Index label for template Symbols

2018-04-13 Thread Ilya Biryukov via Phabricator via cfe-commits
ilya-biryukov updated this revision to Diff 142372.
ilya-biryukov marked 2 inline comments as done.
ilya-biryukov added a comment.

- Also test plain text completion text
- Clarify the comment
- Simplify conditions in getTemplateOrThis


Repository:
  rCTE Clang Tools Extra

https://reviews.llvm.org/D45482

Files:
  clangd/index/SymbolCollector.cpp
  unittests/clangd/FileIndexTests.cpp


Index: unittests/clangd/FileIndexTests.cpp
===
--- unittests/clangd/FileIndexTests.cpp
+++ unittests/clangd/FileIndexTests.cpp
@@ -195,6 +195,44 @@
   EXPECT_TRUE(SeenSymbol);
 }
 
+TEST(FileIndexTest, TemplateParamsInLabel) {
+  auto Source = R"cpp(
+template 
+class vector {
+};
+
+template 
+vector make_vector(Ty* begin, Ty* end) {}
+)cpp";
+
+  FileIndex M;
+  M.update("f", build("f", Source).getPointer());
+
+  FuzzyFindRequest Req;
+  Req.Query = "";
+  bool SeenVector = false;
+  bool SeenMakeVector = false;
+  M.fuzzyFind(Req, [&](const Symbol ) {
+if (Sym.Name == "vector") {
+  EXPECT_EQ(Sym.CompletionLabel, "vector");
+  EXPECT_EQ(Sym.CompletionSnippetInsertText, "vector<${1:class Ty}>");
+  EXPECT_EQ(Sym.CompletionPlainInsertText, "vector");
+  SeenVector = true;
+  return;
+}
+
+if (Sym.Name == "make_vector") {
+  EXPECT_EQ(Sym.CompletionLabel, "make_vector(Ty *begin, Ty *end)");
+  EXPECT_EQ(Sym.CompletionSnippetInsertText,
+"make_vector(${1:Ty *begin}, ${2:Ty *end})");
+  EXPECT_EQ(Sym.CompletionPlainInsertText, "make_vector");
+  SeenMakeVector = true;
+}
+  });
+  EXPECT_TRUE(SeenVector);
+  EXPECT_TRUE(SeenMakeVector);
+}
+
 } // namespace
 } // namespace clangd
 } // namespace clang
Index: clangd/index/SymbolCollector.cpp
===
--- clangd/index/SymbolCollector.cpp
+++ clangd/index/SymbolCollector.cpp
@@ -14,6 +14,7 @@
 #include "../URI.h"
 #include "CanonicalIncludes.h"
 #include "clang/AST/DeclCXX.h"
+#include "clang/AST/DeclTemplate.h"
 #include "clang/ASTMatchers/ASTMatchFinder.h"
 #include "clang/Basic/SourceManager.h"
 #include "clang/Index/IndexSymbol.h"
@@ -26,6 +27,19 @@
 namespace clangd {
 
 namespace {
+/// If \p ND is a template specialization, returns the primary template.
+/// Otherwise, returns \p ND.
+const NamedDecl (const NamedDecl ) {
+  if (auto Cls = dyn_cast()) {
+if (auto T = Cls->getDescribedTemplate())
+  return *T;
+  } else if (auto Func = dyn_cast()) {
+if (auto T = Func->getPrimaryTemplate())
+  return *T;
+  }
+  return ND;
+}
+
 // Returns a URI of \p Path. Firstly, this makes the \p Path absolute using the
 // current working directory of the given SourceManager if the Path is not an
 // absolute path. If failed, this resolves relative paths against \p 
FallbackDir
@@ -325,7 +339,8 @@
   // Add completion info.
   // FIXME: we may want to choose a different redecl, or combine from several.
   assert(ASTCtx && PP.get() && "ASTContext and Preprocessor must be set.");
-  CodeCompletionResult SymbolCompletion(, 0);
+  // We use the primary template, as clang does during code completion.
+  CodeCompletionResult SymbolCompletion((ND), 0);
   const auto *CCS = SymbolCompletion.CreateCodeCompletionString(
   *ASTCtx, *PP, CodeCompletionContext::CCC_Name, *CompletionAllocator,
   *CompletionTUInfo,


Index: unittests/clangd/FileIndexTests.cpp
===
--- unittests/clangd/FileIndexTests.cpp
+++ unittests/clangd/FileIndexTests.cpp
@@ -195,6 +195,44 @@
   EXPECT_TRUE(SeenSymbol);
 }
 
+TEST(FileIndexTest, TemplateParamsInLabel) {
+  auto Source = R"cpp(
+template 
+class vector {
+};
+
+template 
+vector make_vector(Ty* begin, Ty* end) {}
+)cpp";
+
+  FileIndex M;
+  M.update("f", build("f", Source).getPointer());
+
+  FuzzyFindRequest Req;
+  Req.Query = "";
+  bool SeenVector = false;
+  bool SeenMakeVector = false;
+  M.fuzzyFind(Req, [&](const Symbol ) {
+if (Sym.Name == "vector") {
+  EXPECT_EQ(Sym.CompletionLabel, "vector");
+  EXPECT_EQ(Sym.CompletionSnippetInsertText, "vector<${1:class Ty}>");
+  EXPECT_EQ(Sym.CompletionPlainInsertText, "vector");
+  SeenVector = true;
+  return;
+}
+
+if (Sym.Name == "make_vector") {
+  EXPECT_EQ(Sym.CompletionLabel, "make_vector(Ty *begin, Ty *end)");
+  EXPECT_EQ(Sym.CompletionSnippetInsertText,
+"make_vector(${1:Ty *begin}, ${2:Ty *end})");
+  EXPECT_EQ(Sym.CompletionPlainInsertText, "make_vector");
+  SeenMakeVector = true;
+}
+  });
+  EXPECT_TRUE(SeenVector);
+  EXPECT_TRUE(SeenMakeVector);
+}
+
 } // namespace
 } // namespace clangd
 } // namespace clang
Index: clangd/index/SymbolCollector.cpp
===
--- clangd/index/SymbolCollector.cpp
+++ clangd/index/SymbolCollector.cpp
@@ -14,6 +14,7 @@
 #include "../URI.h"
 #include 

[PATCH] D45482: [clangd] Match AST and Index label for template Symbols

2018-04-11 Thread Sam McCall via Phabricator via cfe-commits
sammccall accepted this revision.
sammccall added a comment.
This revision is now accepted and ready to land.

Nice, I'd been wondering about that...




Comment at: clangd/index/SymbolCollector.cpp:36
+  return *T;
+return ND;
+  }

uber-nit: these three return statements are a bit confusing to me. Maybe omit 
them and if/elseif, so the default case falls through to the bottom.



Comment at: clangd/index/SymbolCollector.cpp:331
+  // We call getTemplateOrThis, since this is what clang's code completion gets
+  // from the lookup in an actual run.
+  CodeCompletionResult SymbolCompletion((ND), 0);

"an actual run" confused me here. Maybe "We use the primary template, as clang 
does during code completion"?



Comment at: unittests/clangd/FileIndexTests.cpp:218
+  EXPECT_EQ(Sym.CompletionLabel, "vector");
+  EXPECT_EQ(Sym.CompletionSnippetInsertText, "vector<${1:class Ty}>");
+  SeenVector = true;

If snippets are off, we'll get "vector", not "vector<>", right?

(Probably no need to test this explicitly, but I just want to be sure)


Repository:
  rCTE Clang Tools Extra

https://reviews.llvm.org/D45482



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[PATCH] D45482: [clangd] Match AST and Index label for template Symbols

2018-04-10 Thread Ilya Biryukov via Phabricator via cfe-commits
ilya-biryukov created this revision.
ilya-biryukov added reviewers: sammccall, hokein.
Herald added subscribers: MaskRay, ioeric, jkorous-apple, klimek.

Previsouly, class completions items from the index were missing
template parameters in both the snippet and the label.


Repository:
  rCTE Clang Tools Extra

https://reviews.llvm.org/D45482

Files:
  clangd/index/SymbolCollector.cpp
  unittests/clangd/FileIndexTests.cpp


Index: unittests/clangd/FileIndexTests.cpp
===
--- unittests/clangd/FileIndexTests.cpp
+++ unittests/clangd/FileIndexTests.cpp
@@ -195,6 +195,42 @@
   EXPECT_TRUE(SeenSymbol);
 }
 
+TEST(FileIndexTest, TemplateParamsInLabel) {
+  auto Source = R"cpp(
+template 
+class vector {
+};
+
+template 
+vector make_vector(Ty* begin, Ty* end) {}
+)cpp";
+
+  FileIndex M;
+  M.update("f", build("f", Source).getPointer());
+
+  FuzzyFindRequest Req;
+  Req.Query = "";
+  bool SeenVector = false;
+  bool SeenMakeVector = false;
+  M.fuzzyFind(Req, [&](const Symbol ) {
+if (Sym.Name == "vector") {
+  EXPECT_EQ(Sym.CompletionLabel, "vector");
+  EXPECT_EQ(Sym.CompletionSnippetInsertText, "vector<${1:class Ty}>");
+  SeenVector = true;
+  return;
+}
+
+if (Sym.Name == "make_vector") {
+  EXPECT_EQ(Sym.CompletionLabel, "make_vector(Ty *begin, Ty *end)");
+  EXPECT_EQ(Sym.CompletionSnippetInsertText,
+"make_vector(${1:Ty *begin}, ${2:Ty *end})");
+  SeenMakeVector = true;
+}
+  });
+  EXPECT_TRUE(SeenVector);
+  EXPECT_TRUE(SeenMakeVector);
+}
+
 } // namespace
 } // namespace clangd
 } // namespace clang
Index: clangd/index/SymbolCollector.cpp
===
--- clangd/index/SymbolCollector.cpp
+++ clangd/index/SymbolCollector.cpp
@@ -14,6 +14,7 @@
 #include "../URI.h"
 #include "CanonicalIncludes.h"
 #include "clang/AST/DeclCXX.h"
+#include "clang/AST/DeclTemplate.h"
 #include "clang/ASTMatchers/ASTMatchFinder.h"
 #include "clang/Basic/SourceManager.h"
 #include "clang/Index/IndexSymbol.h"
@@ -26,6 +27,22 @@
 namespace clangd {
 
 namespace {
+/// If \p ND is a template specialization, returns the primary template.
+/// Otherwise, returns \p ND.
+const NamedDecl (const NamedDecl ) {
+  if (auto Cls = dyn_cast()) {
+if (auto T = Cls->getDescribedTemplate())
+  return *T;
+return ND;
+  }
+  if (auto Func = dyn_cast()) {
+if (auto T = Func->getPrimaryTemplate())
+  return *T;
+return ND;
+  }
+  return ND;
+}
+
 // Returns a URI of \p Path. Firstly, this makes the \p Path absolute using the
 // current working directory of the given SourceManager if the Path is not an
 // absolute path. If failed, this resolves relative paths against \p 
FallbackDir
@@ -310,7 +327,9 @@
   // Add completion info.
   // FIXME: we may want to choose a different redecl, or combine from several.
   assert(ASTCtx && PP.get() && "ASTContext and Preprocessor must be set.");
-  CodeCompletionResult SymbolCompletion(, 0);
+  // We call getTemplateOrThis, since this is what clang's code completion gets
+  // from the lookup in an actual run.
+  CodeCompletionResult SymbolCompletion((ND), 0);
   const auto *CCS = SymbolCompletion.CreateCodeCompletionString(
   *ASTCtx, *PP, CodeCompletionContext::CCC_Name, *CompletionAllocator,
   *CompletionTUInfo,


Index: unittests/clangd/FileIndexTests.cpp
===
--- unittests/clangd/FileIndexTests.cpp
+++ unittests/clangd/FileIndexTests.cpp
@@ -195,6 +195,42 @@
   EXPECT_TRUE(SeenSymbol);
 }
 
+TEST(FileIndexTest, TemplateParamsInLabel) {
+  auto Source = R"cpp(
+template 
+class vector {
+};
+
+template 
+vector make_vector(Ty* begin, Ty* end) {}
+)cpp";
+
+  FileIndex M;
+  M.update("f", build("f", Source).getPointer());
+
+  FuzzyFindRequest Req;
+  Req.Query = "";
+  bool SeenVector = false;
+  bool SeenMakeVector = false;
+  M.fuzzyFind(Req, [&](const Symbol ) {
+if (Sym.Name == "vector") {
+  EXPECT_EQ(Sym.CompletionLabel, "vector");
+  EXPECT_EQ(Sym.CompletionSnippetInsertText, "vector<${1:class Ty}>");
+  SeenVector = true;
+  return;
+}
+
+if (Sym.Name == "make_vector") {
+  EXPECT_EQ(Sym.CompletionLabel, "make_vector(Ty *begin, Ty *end)");
+  EXPECT_EQ(Sym.CompletionSnippetInsertText,
+"make_vector(${1:Ty *begin}, ${2:Ty *end})");
+  SeenMakeVector = true;
+}
+  });
+  EXPECT_TRUE(SeenVector);
+  EXPECT_TRUE(SeenMakeVector);
+}
+
 } // namespace
 } // namespace clangd
 } // namespace clang
Index: clangd/index/SymbolCollector.cpp
===
--- clangd/index/SymbolCollector.cpp
+++ clangd/index/SymbolCollector.cpp
@@ -14,6 +14,7 @@
 #include "../URI.h"
 #include "CanonicalIncludes.h"
 #include "clang/AST/DeclCXX.h"
+#include "clang/AST/DeclTemplate.h"
 #include "clang/ASTMatchers/ASTMatchFinder.h"