ioeric created this revision.
ioeric added a reviewer: sammccall.
Herald added subscribers: cfe-commits, jkorous, MaskRay, ilya-biryukov.
Also move unittest: URI scheme to TestFS so that it can be shared by
different tests.
Repository:
rCTE Clang Tools Extra
https://reviews.llvm.org/D47935
Files:
clangd/ClangdServer.cpp
clangd/ClangdServer.h
clangd/CodeComplete.cpp
clangd/Quality.cpp
clangd/Quality.h
clangd/index/FileIndex.cpp
clangd/index/FileIndex.h
unittests/clangd/ClangdTests.cpp
unittests/clangd/FileIndexTests.cpp
unittests/clangd/QualityTests.cpp
unittests/clangd/TestFS.cpp
unittests/clangd/URITests.cpp
Index: unittests/clangd/URITests.cpp
===================================================================
--- unittests/clangd/URITests.cpp
+++ unittests/clangd/URITests.cpp
@@ -14,46 +14,20 @@
namespace clang {
namespace clangd {
+
+// Force the unittest URI scheme to be linked,
+extern volatile int UnittestSchemeAnchorSource;
+static int LLVM_ATTRIBUTE_UNUSED UnittestSchemeAnchorDest =
+ UnittestSchemeAnchorSource;
+
namespace {
using ::testing::AllOf;
MATCHER_P(Scheme, S, "") { return arg.scheme() == S; }
MATCHER_P(Authority, A, "") { return arg.authority() == A; }
MATCHER_P(Body, B, "") { return arg.body() == B; }
-// Assume all files in the schema have a "test-root/" root directory, and the
-// schema path is the relative path to the root directory.
-// So the schema of "/some-dir/test-root/x/y/z" is "test:x/y/z".
-class TestScheme : public URIScheme {
-public:
- static const char *Scheme;
-
- static const char *TestRoot;
-
- llvm::Expected<std::string>
- getAbsolutePath(llvm::StringRef /*Authority*/, llvm::StringRef Body,
- llvm::StringRef HintPath) const override {
- auto Pos = HintPath.find(TestRoot);
- assert(Pos != llvm::StringRef::npos);
- return (HintPath.substr(0, Pos + llvm::StringRef(TestRoot).size()) + Body)
- .str();
- }
-
- llvm::Expected<URI>
- uriFromAbsolutePath(llvm::StringRef AbsolutePath) const override {
- auto Pos = AbsolutePath.find(TestRoot);
- assert(Pos != llvm::StringRef::npos);
- return URI(Scheme, /*Authority=*/"",
- AbsolutePath.substr(Pos + llvm::StringRef(TestRoot).size()));
- }
-};
-
-const char *TestScheme::Scheme = "unittest";
-const char *TestScheme::TestRoot = "/test-root/";
-
-static URISchemeRegistry::Add<TestScheme> X(TestScheme::Scheme, "Test schema");
-
std::string createOrDie(llvm::StringRef AbsolutePath,
llvm::StringRef Scheme = "file") {
auto Uri = URI::create(AbsolutePath, Scheme);
Index: unittests/clangd/TestFS.cpp
===================================================================
--- unittests/clangd/TestFS.cpp
+++ unittests/clangd/TestFS.cpp
@@ -7,6 +7,7 @@
//
//===----------------------------------------------------------------------===//
#include "TestFS.h"
+#include "URI.h"
#include "llvm/Support/Errc.h"
#include "gtest/gtest.h"
@@ -62,5 +63,50 @@
return Path.str();
}
+// Assume all files in the schema have a "test-root/" root directory, and the
+// schema path is the relative path to the root directory.
+// So the schema of "/some-dir/test-root/x/y/z" is "test:x/y/z".
+class TestScheme : public URIScheme {
+public:
+ static const char *Scheme;
+
+ static const char *TestRoot;
+
+ llvm::Expected<std::string>
+ getAbsolutePath(llvm::StringRef /*Authority*/, llvm::StringRef Body,
+ llvm::StringRef HintPath) const override {
+ auto Pos = HintPath.find(TestRoot);
+ assert(Pos != llvm::StringRef::npos);
+ return (HintPath.substr(0, Pos + llvm::StringRef(TestRoot).size()) + Body)
+ .str();
+ }
+
+ llvm::Expected<URI>
+ uriFromAbsolutePath(llvm::StringRef AbsolutePath) const override {
+ auto Pos = AbsolutePath.find(TestRoot);
+ if (Pos == llvm::StringRef::npos)
+ return llvm::make_error<llvm::StringError>(
+ llvm::Twine("Directory ") + TestRoot + " not found in path " +
+ AbsolutePath,
+ llvm::inconvertibleErrorCode());
+
+ return URI(Scheme, /*Authority=*/"",
+ AbsolutePath.substr(Pos + llvm::StringRef(TestRoot).size()));
+ }
+};
+
+const char *TestScheme::Scheme = "unittest";
+#ifdef _WIN32
+const char *TestScheme::TestRoot = "\\test-root\\";
+#else
+const char *TestScheme::TestRoot = "/test-root/";
+#endif
+
+static URISchemeRegistry::Add<TestScheme> X(TestScheme::Scheme, "Test schema");
+
+// This anchor is used to force the linker to link in the generated object file
+// and thus register the plugin.
+volatile int UnittestSchemeAnchorSource = 0;
+
} // namespace clangd
} // namespace clang
Index: unittests/clangd/QualityTests.cpp
===================================================================
--- unittests/clangd/QualityTests.cpp
+++ unittests/clangd/QualityTests.cpp
@@ -18,12 +18,19 @@
//===----------------------------------------------------------------------===//
#include "Quality.h"
+#include "TestFS.h"
#include "TestTU.h"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
namespace clang {
namespace clangd {
+
+// Force the unittest URI scheme to be linked,
+extern volatile int UnittestSchemeAnchorSource;
+static int LLVM_ATTRIBUTE_UNUSED UnittestSchemeAnchorDest =
+ UnittestSchemeAnchorSource;
+
namespace {
TEST(QualityTests, SymbolQualitySignalExtraction) {
@@ -160,6 +167,84 @@
EXPECT_LT(sortText(0, "a"), sortText(0, "z"));
}
+// {a,b,c} becomes /clangd-test/a/b/c
+std::string joinPaths(llvm::ArrayRef<StringRef> Parts) {
+ return testPath(
+ llvm::join(Parts.begin(), Parts.end(), llvm::sys::path::get_separator()));
+}
+
+Symbol symWithDeclURI(StringRef Path, std::string &Storage,
+ StringRef Scheme = "file") {
+ Symbol Sym;
+ auto U = URI::create(Path, Scheme);
+ EXPECT_TRUE(static_cast<bool>(U)) << llvm::toString(U.takeError());
+ Storage = U->toString();
+ Sym.CanonicalDeclaration.FileURI = Storage;
+ return Sym;
+}
+
+TEST(QualityTests, IndexSymbolProximityScores) {
+ SymbolRelevanceSignals Relevance;
+ std::string Path = joinPaths({"a", "b", "c", "x"});
+ Relevance.ProximityPath = Path;
+
+ std::string Storage;
+
+ Relevance.merge(symWithDeclURI(joinPaths({"a", "b", "c", "x"}), Storage));
+ EXPECT_FLOAT_EQ(Relevance.ProximityScore, 1.0);
+
+ Relevance.merge(symWithDeclURI(joinPaths({"a", "b", "c", "y"}), Storage));
+ EXPECT_FLOAT_EQ(Relevance.ProximityScore, 0.9);
+
+ Relevance.merge(symWithDeclURI(joinPaths({"a", "y"}), Storage));
+ EXPECT_FLOAT_EQ(Relevance.ProximityScore, 0.80);
+
+ Relevance.merge(symWithDeclURI(joinPaths({"a", "b", "c", "d", "y"}), Storage));
+ EXPECT_FLOAT_EQ(Relevance.ProximityScore, 0.85);
+
+ Relevance.merge(
+ symWithDeclURI(joinPaths({"a", "b", "m", "n", "o", "y"}), Storage));
+ EXPECT_FLOAT_EQ(Relevance.ProximityScore, 0.4);
+
+ Relevance.merge(
+ symWithDeclURI(joinPaths({"a", "t", "m", "n", "o", "y"}), Storage));
+ EXPECT_FLOAT_EQ(Relevance.ProximityScore, 0.2);
+
+ // Note the common directory is /clang-test/
+ Relevance.merge(symWithDeclURI(joinPaths({"m", "n", "o", "y"}), Storage));
+ EXPECT_FLOAT_EQ(Relevance.ProximityScore, 0.2);
+
+ // Different URI schemes.
+ Relevance.merge(symWithDeclURI(joinPaths({"a", "b", "test-root", "a", "y"}),
+ Storage,
+ /*Scheme=*/"unittest"));
+ EXPECT_FLOAT_EQ(Relevance.ProximityScore, 0);
+}
+
+TEST(QualityTests, IndexSymbolProximityScoresWithTestURI) {
+ SymbolRelevanceSignals Relevance;
+ std::string Path = joinPaths({"a", "test-root", "b", "c", "x"});
+ Relevance.ProximityPath = Path;
+
+ std::string Storage;
+
+ Relevance.merge(
+ symWithDeclURI(joinPaths({"remote", "test-root", "b", "c", "x"}), Storage,
+ /*Scheme=*/"unittest"));
+ EXPECT_FLOAT_EQ(Relevance.ProximityScore, 1);
+
+ Relevance.merge(
+ symWithDeclURI(joinPaths({"remote", "test-root", "y"}), Storage,
+ /*Scheme=*/"unittest"));
+ EXPECT_FLOAT_EQ(Relevance.ProximityScore, 0.8);
+
+ // unittest:///b/c/x vs unittest:///m/n/y. No common directory.
+ Relevance.merge(
+ symWithDeclURI(joinPaths({"remote", "test-root", "m", "n", "y"}), Storage,
+ /*Scheme=*/"unittest"));
+ EXPECT_FLOAT_EQ(Relevance.ProximityScore, 0.0);
+}
+
} // namespace
} // namespace clangd
} // namespace clang
Index: unittests/clangd/FileIndexTests.cpp
===================================================================
--- unittests/clangd/FileIndexTests.cpp
+++ unittests/clangd/FileIndexTests.cpp
@@ -96,6 +96,42 @@
M.update(File.Filename, &AST.getASTContext(), AST.getPreprocessorPtr());
}
+class TestURIScheme : public URIScheme {
+public:
+ llvm::Expected<std::string>
+ getAbsolutePath(llvm::StringRef /*Authority*/, llvm::StringRef Body,
+ llvm::StringRef /*HintPath*/) const override {
+ llvm_unreachable("ClangdTests never makes absolute path.");
+ }
+
+ llvm::Expected<URI>
+ uriFromAbsolutePath(llvm::StringRef AbsolutePath) const override {
+ return URI::parse(HardcodedURI);
+ }
+ static const char HardcodedURI[];
+ static const char Scheme[];
+};
+
+const char TestURIScheme::HardcodedURI[] = "ClangdTests:///test";
+const char TestURIScheme::Scheme[] = "ClangdTest";
+
+static URISchemeRegistry::Add<TestURIScheme> X(TestURIScheme::Scheme,
+ "Test scheme for ClangdTests.");
+
+TEST(FileIndexTest, CustomizedURIScheme) {
+ FileIndex M({TestURIScheme::Scheme});
+ update(M, "f", "class string {};");
+
+ FuzzyFindRequest Req;
+ Req.Query = "";
+ bool SeenSymbol = false;
+ M.fuzzyFind(Req, [&](const Symbol &Sym) {
+ EXPECT_EQ(Sym.CanonicalDeclaration.FileURI, TestURIScheme::HardcodedURI);
+ SeenSymbol = true;
+ });
+ EXPECT_TRUE(SeenSymbol);
+}
+
TEST(FileIndexTest, IndexAST) {
FileIndex M;
update(M, "f1", "namespace ns { void f() {} class X {}; }");
Index: unittests/clangd/ClangdTests.cpp
===================================================================
--- unittests/clangd/ClangdTests.cpp
+++ unittests/clangd/ClangdTests.cpp
@@ -152,28 +152,6 @@
}
};
-constexpr const char* ClangdTestScheme = "ClangdTests";
-class TestURIScheme : public URIScheme {
-public:
- llvm::Expected<std::string>
- getAbsolutePath(llvm::StringRef /*Authority*/, llvm::StringRef Body,
- llvm::StringRef /*HintPath*/) const override {
- llvm_unreachable("ClangdTests never makes absolute path.");
- }
-
- llvm::Expected<URI>
- uriFromAbsolutePath(llvm::StringRef AbsolutePath) const override {
- llvm_unreachable("ClangdTest never creates a test URI.");
- }
-
- llvm::Expected<std::string> getIncludeSpelling(const URI &U) const override {
- return ("\"" + U.body().trim("/") + "\"").str();
- }
-};
-
-static URISchemeRegistry::Add<TestURIScheme>
- X(ClangdTestScheme, "Test scheme for ClangdTests.");
-
TEST_F(ClangdVFSTest, Parse) {
// FIXME: figure out a stable format for AST dumps, so that we can check the
// output of the dump itself is equal to the expected one, not just that it's
Index: clangd/index/FileIndex.h
===================================================================
--- clangd/index/FileIndex.h
+++ clangd/index/FileIndex.h
@@ -56,6 +56,10 @@
/// \brief This manages symbls from files and an in-memory index on all symbols.
class FileIndex : public SymbolIndex {
public:
+ /// If URISchemes is empty, the default schemes in SymbolCollector will be
+ /// used.
+ FileIndex(std::vector<std::string> URISchemes = {});
+
/// \brief Update symbols in \p Path with symbols in \p AST. If \p AST is
/// nullptr, this removes all symbols in the file.
/// If \p AST is not null, \p PP cannot be null and it should be the
@@ -72,11 +76,14 @@
private:
FileSymbols FSymbols;
MemIndex Index;
+ std::vector<std::string> URISchemes;
};
/// Retrieves namespace and class level symbols in \p AST.
/// Exposed to assist in unit tests.
-SymbolSlab indexAST(ASTContext &AST, std::shared_ptr<Preprocessor> PP);
+/// If URISchemes is empty, the default schemes in SymbolCollector will be used.
+SymbolSlab indexAST(ASTContext &AST, std::shared_ptr<Preprocessor> PP,
+ llvm::ArrayRef<std::string> URISchemes = {});
} // namespace clangd
} // namespace clang
Index: clangd/index/FileIndex.cpp
===================================================================
--- clangd/index/FileIndex.cpp
+++ clangd/index/FileIndex.cpp
@@ -15,15 +15,18 @@
namespace clang {
namespace clangd {
-SymbolSlab indexAST(ASTContext &AST, std::shared_ptr<Preprocessor> PP) {
+SymbolSlab indexAST(ASTContext &AST, std::shared_ptr<Preprocessor> PP,
+ llvm::ArrayRef<std::string> URISchemes) {
SymbolCollector::Options CollectorOpts;
// FIXME(ioeric): we might also want to collect include headers. We would need
// to make sure all includes are canonicalized (with CanonicalIncludes), which
// is not trivial given the current way of collecting symbols: we only have
// AST at this point, but we also need preprocessor callbacks (e.g.
// CommentHandler for IWYU pragma) to canonicalize includes.
CollectorOpts.CollectIncludePath = false;
CollectorOpts.CountReferences = false;
+ if (!URISchemes.empty())
+ CollectorOpts.URISchemes = URISchemes;
SymbolCollector Collector(std::move(CollectorOpts));
Collector.setPreprocessor(PP);
@@ -41,6 +44,9 @@
return Collector.takeSymbols();
}
+FileIndex::FileIndex(std::vector<std::string> URISchemes)
+ : URISchemes(std::move(URISchemes)) {}
+
void FileSymbols::update(PathRef Path, std::unique_ptr<SymbolSlab> Slab) {
std::lock_guard<std::mutex> Lock(Mutex);
if (!Slab)
@@ -79,7 +85,7 @@
} else {
assert(PP);
auto Slab = llvm::make_unique<SymbolSlab>();
- *Slab = indexAST(*AST, PP);
+ *Slab = indexAST(*AST, PP, URISchemes);
FSymbols.update(Path, std::move(Slab));
}
auto Symbols = FSymbols.allSymbols();
Index: clangd/Quality.h
===================================================================
--- clangd/Quality.h
+++ clangd/Quality.h
@@ -70,6 +70,8 @@
/// 0-1+ fuzzy-match score for unqualified name. Must be explicitly assigned.
float NameMatch = 1;
bool Forbidden = false; // Unavailable (e.g const) or inaccessible (private).
+ // If set, this is used to compute proximity from symbol's declaring file.
+ llvm::StringRef ProximityPath;
/// Proximity between best declaration and the query. [0-1], 1 is closest.
float ProximityScore = 0;
Index: clangd/Quality.cpp
===================================================================
--- clangd/Quality.cpp
+++ clangd/Quality.cpp
@@ -7,6 +7,7 @@
//
//===---------------------------------------------------------------------===//
#include "Quality.h"
+#include "URI.h"
#include "index/Index.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/DeclVisitor.h"
@@ -163,9 +164,52 @@
return SymbolRelevanceSignals::GlobalScope;
}
+/// Calculates a proximity score between two URI strings that have the same
+/// scheme. This does not parse URI. A URI (sans "<scheme>:") is split into
+/// chunks by '/' and each chunk is considered a file/directory. For example,
+/// "uri:///a/b/c" will be treated as /a/b/c
+static float uriProximity(StringRef UX, StringRef UY) {
+ auto SchemeSplitX = UX.split(':');
+ auto SchemeSplitY = UY.split(':');
+ assert((SchemeSplitX.first == SchemeSplitY.first) &&
+ "URIs must have the same scheme in order to compute proximity.");
+ auto Split = [](StringRef URIWithoutScheme) {
+ SmallVector<StringRef, 8> Split;
+ URIWithoutScheme.split(Split, '/', /*MaxSplit=*/-1, /*KeepEmpty=*/false);
+ return Split;
+ };
+ SmallVector<StringRef, 8> Xs = Split(SchemeSplitX.second);
+ SmallVector<StringRef, 8> Ys = Split(SchemeSplitY.second);
+ auto X = Xs.begin(), Y = Ys.begin(), XE = Xs.end(), YE = Ys.end();
+ for (; X != XE && Y != YE && *X == *Y; ++X, ++Y) {
+ }
+ auto Dist = (XE - X) + (YE - Y);
+ // Either UX and UY are in the same directory or one is in an ancestor
+ // directory of the other.
+ // 1.0 same file, 0.9 in the same directory; -0.05 for each directory away.
+ if (X >= (XE - 1) || Y >= (YE - 1))
+ return 1.0 - Dist * 0.05;
+ if (X == Xs.begin() && Y == Ys.begin()) // No common directory.
+ return 0;
+ return std::max(0.0, 1.0 - 0.1 * Dist);
+}
+
void SymbolRelevanceSignals::merge(const Symbol &IndexResult) {
// FIXME: Index results always assumed to be at global scope. If Scope becomes
// relevant to non-completion requests, we should recognize class members etc.
+
+ ProximityScore = 0.0;
+ StringRef SymURI = IndexResult.CanonicalDeclaration.FileURI;
+ if (!ProximityPath.empty() && !SymURI.empty()) {
+ // Only calculate proximity score for two URIs with the same scheme so that
+ // the computation can be purely text-based and thus avoid expensive URI
+ // encoding/decoding.
+ if (auto U = URI::create(ProximityPath, SymURI.split(':').first)) {
+ ProximityScore += uriProximity(SymURI, U->toString());
+ } else {
+ llvm::consumeError(U.takeError());
+ }
+ }
}
void SymbolRelevanceSignals::merge(const CodeCompletionResult &SemaCCResult) {
Index: clangd/CodeComplete.cpp
===================================================================
--- clangd/CodeComplete.cpp
+++ clangd/CodeComplete.cpp
@@ -1026,6 +1026,7 @@
SymbolQualitySignals Quality;
SymbolRelevanceSignals Relevance;
+ Relevance.ProximityPath = FileName;
Relevance.Query = SymbolRelevanceSignals::CodeComplete;
if (auto FuzzyScore = Filter->match(C.Name))
Relevance.NameMatch = *FuzzyScore;
Index: clangd/ClangdServer.h
===================================================================
--- clangd/ClangdServer.h
+++ clangd/ClangdServer.h
@@ -80,6 +80,10 @@
/// opened files and uses the index to augment code completion results.
bool BuildDynamicSymbolIndex = false;
+ /// URI schemes to use when building the dynamic index.
+ /// If empty, the default schemes in SymbolCollector will be used.
+ std::vector<std::string> URISchemes;
+
/// If set, use this index to augment code completion results.
SymbolIndex *StaticIndex = nullptr;
Index: clangd/ClangdServer.cpp
===================================================================
--- clangd/ClangdServer.cpp
+++ clangd/ClangdServer.cpp
@@ -86,7 +86,8 @@
: CompileArgs(CDB, Opts.ResourceDir ? Opts.ResourceDir->str()
: getStandardResourceDir()),
DiagConsumer(DiagConsumer), FSProvider(FSProvider),
- FileIdx(Opts.BuildDynamicSymbolIndex ? new FileIndex() : nullptr),
+ FileIdx(Opts.BuildDynamicSymbolIndex ? new FileIndex(Opts.URISchemes)
+ : nullptr),
PCHs(std::make_shared<PCHContainerOperations>()),
// Pass a callback into `WorkScheduler` to extract symbols from a newly
// parsed file and rebuild the file index synchronously each time an AST
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