hokein created this revision.
hokein added a reviewer: sammccall.
Herald added subscribers: kadircet, arphaman, jkorous, MaskRay, ioeric,
ilya-biryukov.
Repository:
rCTE Clang Tools Extra
https://reviews.llvm.org/D56597
Files:
clangd/ClangdLSPServer.cpp
clangd/ClangdServer.cpp
clangd/ClangdServer.h
clangd/XRefs.cpp
clangd/XRefs.h
clangd/index/Index.h
clangd/index/MemIndex.cpp
clangd/index/Merge.cpp
clangd/index/dex/Dex.cpp
unittests/clangd/DexTests.cpp
unittests/clangd/IndexTests.cpp
unittests/clangd/XRefsTests.cpp
Index: unittests/clangd/XRefsTests.cpp
===================================================================
--- unittests/clangd/XRefsTests.cpp
+++ unittests/clangd/XRefsTests.cpp
@@ -1219,7 +1219,7 @@
std::vector<Matcher<Location>> ExpectedLocations;
for (const auto &R : T.ranges())
ExpectedLocations.push_back(RangeIs(R));
- EXPECT_THAT(findReferences(AST, T.point()),
+ EXPECT_THAT(findReferences(AST, T.point(), 0),
ElementsAreArray(ExpectedLocations))
<< Test;
}
@@ -1266,7 +1266,7 @@
std::vector<Matcher<Location>> ExpectedLocations;
for (const auto &R : T.ranges())
ExpectedLocations.push_back(RangeIs(R));
- EXPECT_THAT(findReferences(AST, T.point()),
+ EXPECT_THAT(findReferences(AST, T.point(), 0),
ElementsAreArray(ExpectedLocations))
<< Test;
}
@@ -1281,7 +1281,7 @@
auto AST = TU.build();
// References in main file are returned without index.
- EXPECT_THAT(findReferences(AST, Main.point(), /*Index=*/nullptr),
+ EXPECT_THAT(findReferences(AST, Main.point(), 0, /*Index=*/nullptr),
ElementsAre(RangeIs(Main.range())));
Annotations IndexedMain(R"cpp(
int main() { [[f^oo]](); }
@@ -1292,13 +1292,17 @@
IndexedTU.Code = IndexedMain.code();
IndexedTU.Filename = "Indexed.cpp";
IndexedTU.HeaderCode = Header;
- EXPECT_THAT(findReferences(AST, Main.point(), IndexedTU.index().get()),
+ EXPECT_THAT(findReferences(AST, Main.point(), 0, IndexedTU.index().get()),
ElementsAre(RangeIs(Main.range()), RangeIs(IndexedMain.range())));
+ EXPECT_EQ(
+ 1, findReferences(AST, Main.point(), /*Limit*/ 1, IndexedTU.index().get())
+ .size());
+
// If the main file is in the index, we don't return duplicates.
// (even if the references are in a different location)
TU.Code = ("\n\n" + Main.code()).str();
- EXPECT_THAT(findReferences(AST, Main.point(), TU.index().get()),
+ EXPECT_THAT(findReferences(AST, Main.point(), 0, TU.index().get()),
ElementsAre(RangeIs(Main.range())));
}
@@ -1328,7 +1332,7 @@
Annotations File(T.AnnotatedCode);
RecordingIndex Rec;
auto AST = TestTU::withCode(File.code()).build();
- findReferences(AST, File.point(), &Rec);
+ findReferences(AST, File.point(), 0, &Rec);
if (T.WantQuery)
EXPECT_NE(Rec.RefIDs, None) << T.AnnotatedCode;
else
Index: unittests/clangd/IndexTests.cpp
===================================================================
--- unittests/clangd/IndexTests.cpp
+++ unittests/clangd/IndexTests.cpp
@@ -290,16 +290,24 @@
RefsRequest Request;
Request.IDs = {Foo.ID};
- RefSlab::Builder Results;
- Merge.refs(Request, [&](const Ref &O) { Results.insert(Foo.ID, O); });
-
- EXPECT_THAT(
- std::move(Results).build(),
- ElementsAre(Pair(
- _, UnorderedElementsAre(AllOf(RefRange(Test1Code.range("Foo")),
- FileURI("unittest:///test.cc")),
- AllOf(RefRange(Test2Code.range("Foo")),
- FileURI("unittest:///test2.cc"))))));
+ {
+ RefSlab::Builder Results;
+ Merge.refs(Request, [&](const Ref &O) { Results.insert(Foo.ID, O); });
+
+ EXPECT_THAT(
+ std::move(Results).build(),
+ ElementsAre(Pair(
+ _, UnorderedElementsAre(AllOf(RefRange(Test1Code.range("Foo")),
+ FileURI("unittest:///test.cc")),
+ AllOf(RefRange(Test2Code.range("Foo")),
+ FileURI("unittest:///test2.cc"))))));
+ }
+ {
+ Request.Limit = 1;
+ size_t RefsCount = 0;
+ Merge.refs(Request, [&](const Ref &O) { ++RefsCount; });
+ EXPECT_EQ(*Request.Limit, RefsCount);
+ }
}
MATCHER_P2(IncludeHeaderWithRef, IncludeHeader, References, "") {
Index: unittests/clangd/DexTests.cpp
===================================================================
--- unittests/clangd/DexTests.cpp
+++ unittests/clangd/DexTests.cpp
@@ -670,15 +670,26 @@
AddRef(Foo, "reffoo.h", RefKind::Reference);
AddRef(Bar, "bar.h", RefKind::Declaration);
- std::vector<std::string> Files;
- RefsRequest Req;
- Req.IDs.insert(Foo.ID);
- Req.Filter = RefKind::Declaration | RefKind::Definition;
- Dex(std::vector<Symbol>{Foo, Bar}, Refs).refs(Req, [&](const Ref &R) {
- Files.push_back(R.Location.FileURI);
- });
-
- EXPECT_THAT(Files, ElementsAre("foo.h"));
+ {
+ std::vector<std::string> Files;
+ RefsRequest Req;
+ Req.IDs.insert(Foo.ID);
+ Req.Filter = RefKind::Declaration | RefKind::Definition;
+ Dex(std::vector<Symbol>{Foo, Bar}, Refs).refs(Req, [&](const Ref &R) {
+ Files.push_back(R.Location.FileURI);
+ });
+ EXPECT_THAT(Files, ElementsAre("foo.h"));
+ }
+ {
+ RefsRequest Req;
+ Req.IDs.insert(Foo.ID);
+ Req.Limit = 1;
+ size_t RefCount = 0;
+ Dex(std::vector<Symbol>{Foo, Bar}, Refs).refs(Req, [&](const Ref &R) {
+ ++RefCount;
+ });
+ EXPECT_THAT(*Req.Limit, RefCount);
+ }
}
} // namespace
Index: clangd/index/dex/Dex.cpp
===================================================================
--- clangd/index/dex/Dex.cpp
+++ clangd/index/dex/Dex.cpp
@@ -236,10 +236,16 @@
void Dex::refs(const RefsRequest &Req,
llvm::function_ref<void(const Ref &)> Callback) const {
trace::Span Tracer("Dex refs");
+ size_t Limit = Req.Limit ? *Req.Limit : std::numeric_limits<size_t>::max();
for (const auto &ID : Req.IDs)
- for (const auto &Ref : Refs.lookup(ID))
- if (static_cast<int>(Req.Filter & Ref.Kind))
+ for (const auto &Ref : Refs.lookup(ID)) {
+ if (Limit == 0)
+ return;
+ if (static_cast<int>(Req.Filter & Ref.Kind)) {
+ --Limit;
Callback(Ref);
+ }
+ }
}
size_t Dex::estimateMemoryUsage() const {
Index: clangd/index/Merge.cpp
===================================================================
--- clangd/index/Merge.cpp
+++ clangd/index/Merge.cpp
@@ -95,14 +95,20 @@
// FIXME: The heuristic fails if the dynamic index contains a file, but all
// refs were removed (we will report stale ones from the static index).
// Ultimately we should explicit check which index has the file instead.
+ size_t Limit = Req.Limit ? *Req.Limit : std::numeric_limits<size_t>::max();
llvm::StringSet<> DynamicIndexFileURIs;
Dynamic->refs(Req, [&](const Ref &O) {
DynamicIndexFileURIs.insert(O.Location.FileURI);
Callback(O);
+ --Limit;
});
+ if (Limit == 0)
+ return;
Static->refs(Req, [&](const Ref &O) {
- if (!DynamicIndexFileURIs.count(O.Location.FileURI))
+ if (Limit > 0 && !DynamicIndexFileURIs.count(O.Location.FileURI)) {
+ --Limit;
Callback(O);
+ }
});
}
Index: clangd/index/MemIndex.cpp
===================================================================
--- clangd/index/MemIndex.cpp
+++ clangd/index/MemIndex.cpp
@@ -69,13 +69,19 @@
void MemIndex::refs(const RefsRequest &Req,
llvm::function_ref<void(const Ref &)> Callback) const {
trace::Span Tracer("MemIndex refs");
+ size_t Limit = Req.Limit ? *Req.Limit : std::numeric_limits<size_t>::max();
for (const auto &ReqID : Req.IDs) {
auto SymRefs = Refs.find(ReqID);
if (SymRefs == Refs.end())
continue;
- for (const auto &O : SymRefs->second)
- if (static_cast<int>(Req.Filter & O.Kind))
+ for (const auto &O : SymRefs->second) {
+ if (Limit == 0)
+ return;
+ if (static_cast<int>(Req.Filter & O.Kind)) {
+ --Limit;
Callback(O);
+ }
+ }
}
}
Index: clangd/index/Index.h
===================================================================
--- clangd/index/Index.h
+++ clangd/index/Index.h
@@ -474,6 +474,8 @@
struct RefsRequest {
llvm::DenseSet<SymbolID> IDs;
RefKind Filter = RefKind::All;
+ /// If set, limit the number of refers returned from the index.
+ llvm::Optional<uint32_t> Limit;
};
/// Interface for symbol indexes that can be used for searching or
Index: clangd/XRefs.h
===================================================================
--- clangd/XRefs.h
+++ clangd/XRefs.h
@@ -35,7 +35,8 @@
llvm::Optional<Hover> getHover(ParsedAST &AST, Position Pos);
/// Returns reference locations of the symbol at a specified \p Pos.
-std::vector<Location> findReferences(ParsedAST &AST, Position Pos,
+/// \p Limit limits the number of results returned (0 means no limit).
+std::vector<Location> findReferences(ParsedAST &AST, Position Pos, int Limit,
const SymbolIndex *Index = nullptr);
/// Get info about symbols at \p Pos.
Index: clangd/XRefs.cpp
===================================================================
--- clangd/XRefs.cpp
+++ clangd/XRefs.cpp
@@ -703,7 +703,7 @@
return None;
}
-std::vector<Location> findReferences(ParsedAST &AST, Position Pos,
+std::vector<Location> findReferences(ParsedAST &AST, Position Pos, int Limit,
const SymbolIndex *Index) {
std::vector<Location> Results;
const SourceManager &SM = AST.getASTContext().getSourceManager();
@@ -721,11 +721,15 @@
if (DI.IsReferencedExplicitly)
TargetDecls.push_back(DI.D);
}
-
+ if (!Limit)
+ Limit = std::numeric_limits<int>::max();
// We traverse the AST to find references in the main file.
// TODO: should we handle macros, too?
auto MainFileRefs = findRefs(TargetDecls, AST);
for (const auto &Ref : MainFileRefs) {
+ if (Limit == 0)
+ break;
+ --Limit;
Location Result;
Result.range = getTokenRange(AST, Ref.Loc);
Result.uri = URIForFile::canonicalize(*MainFilePath, *MainFilePath);
@@ -733,9 +737,11 @@
}
// Now query the index for references from other files.
- if (!Index)
+ if (!Index || Limit == 0)
return Results;
RefsRequest Req;
+ Req.Limit = Limit;
+
for (const Decl *D : TargetDecls) {
// Not all symbols can be referenced from outside (e.g. function-locals).
// TODO: we could skip TU-scoped symbols here (e.g. static functions) if
@@ -750,8 +756,10 @@
Index->refs(Req, [&](const Ref &R) {
auto LSPLoc = toLSPLocation(R.Location, *MainFilePath);
// Avoid indexed results for the main file - the AST is authoritative.
- if (LSPLoc && LSPLoc->uri.file() != *MainFilePath)
+ if (Limit > 0 && LSPLoc && LSPLoc->uri.file() != *MainFilePath) {
+ --Limit;
Results.push_back(std::move(*LSPLoc));
+ }
});
return Results;
}
Index: clangd/ClangdServer.h
===================================================================
--- clangd/ClangdServer.h
+++ clangd/ClangdServer.h
@@ -181,7 +181,7 @@
Callback<std::vector<DocumentSymbol>> CB);
/// Retrieve locations for symbol references.
- void findReferences(PathRef File, Position Pos,
+ void findReferences(PathRef File, Position Pos, int Limit,
Callback<std::vector<Location>> CB);
/// Run formatting for \p Rng inside \p File with content \p Code.
Index: clangd/ClangdServer.cpp
===================================================================
--- clangd/ClangdServer.cpp
+++ clangd/ClangdServer.cpp
@@ -500,13 +500,13 @@
Bind(Action, std::move(CB)));
}
-void ClangdServer::findReferences(PathRef File, Position Pos,
+void ClangdServer::findReferences(PathRef File, Position Pos, int Limit,
Callback<std::vector<Location>> CB) {
- auto Action = [Pos, this](Callback<std::vector<Location>> CB,
- llvm::Expected<InputsAndAST> InpAST) {
+ auto Action = [Pos, Limit, this](Callback<std::vector<Location>> CB,
+ llvm::Expected<InputsAndAST> InpAST) {
if (!InpAST)
return CB(InpAST.takeError());
- CB(clangd::findReferences(InpAST->AST, Pos, Index));
+ CB(clangd::findReferences(InpAST->AST, Pos, Limit, Index));
};
WorkScheduler.runWithAST("References", File, Bind(Action, std::move(CB)));
Index: clangd/ClangdLSPServer.cpp
===================================================================
--- clangd/ClangdLSPServer.cpp
+++ clangd/ClangdLSPServer.cpp
@@ -710,7 +710,7 @@
void ClangdLSPServer::onReference(const ReferenceParams &Params,
Callback<std::vector<Location>> Reply) {
Server->findReferences(Params.textDocument.uri.file(), Params.position,
- std::move(Reply));
+ CCOpts.Limit, std::move(Reply));
}
void ClangdLSPServer::onSymbolInfo(const TextDocumentPositionParams &Params,
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