[clang-tools-extra] 33e882d - [clangd] Add bool return type to Index::refs API.

Haojian Wu via cfe-commits cfe-commits at lists.llvm.org
Wed Nov 13 05:53:47 PST 2019


Author: Haojian Wu
Date: 2019-11-13T14:42:30+01:00
New Revision: 33e882d5ada0b42323be3277816b0817b8e6baa2

URL: https://github.com/llvm/llvm-project/commit/33e882d5ada0b42323be3277816b0817b8e6baa2
DIFF: https://github.com/llvm/llvm-project/commit/33e882d5ada0b42323be3277816b0817b8e6baa2.diff

LOG: [clangd] Add bool return type to Index::refs API.

Summary:
Similar to fuzzyFind, the bool indicates whether there are more xref
results.

Reviewers: ilya-biryukov

Reviewed By: ilya-biryukov

Subscribers: merge_guards_bot, MaskRay, jkorous, arphaman, kadircet, usaxena95, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D70139

Added: 
    

Modified: 
    clang-tools-extra/clangd/index/Index.cpp
    clang-tools-extra/clangd/index/Index.h
    clang-tools-extra/clangd/index/MemIndex.cpp
    clang-tools-extra/clangd/index/MemIndex.h
    clang-tools-extra/clangd/index/Merge.cpp
    clang-tools-extra/clangd/index/Merge.h
    clang-tools-extra/clangd/index/dex/Dex.cpp
    clang-tools-extra/clangd/index/dex/Dex.h
    clang-tools-extra/clangd/unittests/CodeCompleteTests.cpp
    clang-tools-extra/clangd/unittests/DexTests.cpp
    clang-tools-extra/clangd/unittests/IndexTests.cpp
    clang-tools-extra/clangd/unittests/XRefsTests.cpp

Removed: 
    


################################################################################
diff  --git a/clang-tools-extra/clangd/index/Index.cpp b/clang-tools-extra/clangd/index/Index.cpp
index 9b411e00e2ab..9ec4908bbbfc 100644
--- a/clang-tools-extra/clangd/index/Index.cpp
+++ b/clang-tools-extra/clangd/index/Index.cpp
@@ -65,7 +65,7 @@ void SwapIndex::lookup(const LookupRequest &R,
                        llvm::function_ref<void(const Symbol &)> CB) const {
   return snapshot()->lookup(R, CB);
 }
-void SwapIndex::refs(const RefsRequest &R,
+bool SwapIndex::refs(const RefsRequest &R,
                      llvm::function_ref<void(const Ref &)> CB) const {
   return snapshot()->refs(R, CB);
 }

diff  --git a/clang-tools-extra/clangd/index/Index.h b/clang-tools-extra/clangd/index/Index.h
index f579a754b13d..1eb116368f14 100644
--- a/clang-tools-extra/clangd/index/Index.h
+++ b/clang-tools-extra/clangd/index/Index.h
@@ -107,7 +107,9 @@ class SymbolIndex {
   ///
   /// Results should be returned in arbitrary order.
   /// The returned result must be deep-copied if it's used outside Callback.
-  virtual void refs(const RefsRequest &Req,
+  ///
+  /// Returns true if there will be more results (limited by Req.Limit);
+  virtual bool refs(const RefsRequest &Req,
                     llvm::function_ref<void(const Ref &)> Callback) const = 0;
 
   /// Finds all relations (S, P, O) stored in the index such that S is among
@@ -136,7 +138,7 @@ class SwapIndex : public SymbolIndex {
                  llvm::function_ref<void(const Symbol &)>) const override;
   void lookup(const LookupRequest &,
               llvm::function_ref<void(const Symbol &)>) const override;
-  void refs(const RefsRequest &,
+  bool refs(const RefsRequest &,
             llvm::function_ref<void(const Ref &)>) const override;
   void relations(const RelationsRequest &,
                  llvm::function_ref<void(const SymbolID &, const Symbol &)>)

diff  --git a/clang-tools-extra/clangd/index/MemIndex.cpp b/clang-tools-extra/clangd/index/MemIndex.cpp
index 1d46dbd64da8..ea691b46cf37 100644
--- a/clang-tools-extra/clangd/index/MemIndex.cpp
+++ b/clang-tools-extra/clangd/index/MemIndex.cpp
@@ -67,22 +67,30 @@ void MemIndex::lookup(const LookupRequest &Req,
   }
 }
 
-void MemIndex::refs(const RefsRequest &Req,
+bool MemIndex::refs(const RefsRequest &Req,
                     llvm::function_ref<void(const Ref &)> Callback) const {
   trace::Span Tracer("MemIndex refs");
   uint32_t Remaining =
       Req.Limit.getValueOr(std::numeric_limits<uint32_t>::max());
+  bool More = false;
   for (const auto &ReqID : Req.IDs) {
     auto SymRefs = Refs.find(ReqID);
     if (SymRefs == Refs.end())
       continue;
     for (const auto &O : SymRefs->second) {
-      if (Remaining > 0 && static_cast<int>(Req.Filter & O.Kind)) {
+      if (!static_cast<int>(Req.Filter & O.Kind))
+        continue;
+      if (Remaining == 0) {
+        More = true;
+        break;
+      }
+      if (Remaining > 0) {
         --Remaining;
         Callback(O);
       }
     }
   }
+  return More;
 }
 
 void MemIndex::relations(

diff  --git a/clang-tools-extra/clangd/index/MemIndex.h b/clang-tools-extra/clangd/index/MemIndex.h
index ad74f5a0ecad..10ecd79e7c54 100644
--- a/clang-tools-extra/clangd/index/MemIndex.h
+++ b/clang-tools-extra/clangd/index/MemIndex.h
@@ -55,7 +55,7 @@ class MemIndex : public SymbolIndex {
   void lookup(const LookupRequest &Req,
               llvm::function_ref<void(const Symbol &)> Callback) const override;
 
-  void refs(const RefsRequest &Req,
+  bool refs(const RefsRequest &Req,
             llvm::function_ref<void(const Ref &)> Callback) const override;
 
   void relations(const RelationsRequest &Req,

diff  --git a/clang-tools-extra/clangd/index/Merge.cpp b/clang-tools-extra/clangd/index/Merge.cpp
index 0c9d0c8d3b12..8d8150a13136 100644
--- a/clang-tools-extra/clangd/index/Merge.cpp
+++ b/clang-tools-extra/clangd/index/Merge.cpp
@@ -89,9 +89,10 @@ void MergedIndex::lookup(
       Callback(*Sym);
 }
 
-void MergedIndex::refs(const RefsRequest &Req,
+bool MergedIndex::refs(const RefsRequest &Req,
                        llvm::function_ref<void(const Ref &)> Callback) const {
   trace::Span Tracer("MergedIndex refs");
+  bool More = false;
   uint32_t Remaining =
       Req.Limit.getValueOr(std::numeric_limits<uint32_t>::max());
   // We don't want duplicated refs from the static/dynamic indexes,
@@ -103,21 +104,26 @@ void MergedIndex::refs(const RefsRequest &Req,
   // refs were removed (we will report stale ones from the static index).
   // Ultimately we should explicit check which index has the file instead.
   llvm::StringSet<> DynamicIndexFileURIs;
-  Dynamic->refs(Req, [&](const Ref &O) {
+  More |= Dynamic->refs(Req, [&](const Ref &O) {
     DynamicIndexFileURIs.insert(O.Location.FileURI);
     Callback(O);
     --Remaining;
   });
-  if (Remaining == 0)
-    return;
+  if (Remaining == 0 && More)
+    return More;
   // We return less than Req.Limit if static index returns more refs for dirty
   // files.
-  Static->refs(Req, [&](const Ref &O) {
-    if (Remaining > 0 && !DynamicIndexFileURIs.count(O.Location.FileURI)) {
+  More |= Static->refs(Req, [&](const Ref &O) {
+    if (DynamicIndexFileURIs.count(O.Location.FileURI))
+      return; // ignore refs that have been seen from dynamic index.
+    if (Remaining == 0)
+      More = true;
+    if (Remaining > 0) {
       --Remaining;
       Callback(O);
     }
   });
+  return More;
 }
 
 void MergedIndex::relations(

diff  --git a/clang-tools-extra/clangd/index/Merge.h b/clang-tools-extra/clangd/index/Merge.h
index b41d4bcf334f..3288aef120fc 100644
--- a/clang-tools-extra/clangd/index/Merge.h
+++ b/clang-tools-extra/clangd/index/Merge.h
@@ -40,7 +40,7 @@ class MergedIndex : public SymbolIndex {
                  llvm::function_ref<void(const Symbol &)>) const override;
   void lookup(const LookupRequest &,
               llvm::function_ref<void(const Symbol &)>) const override;
-  void refs(const RefsRequest &,
+  bool refs(const RefsRequest &,
             llvm::function_ref<void(const Ref &)>) const override;
   void relations(const RelationsRequest &,
                  llvm::function_ref<void(const SymbolID &, const Symbol &)>)

diff  --git a/clang-tools-extra/clangd/index/dex/Dex.cpp b/clang-tools-extra/clangd/index/dex/Dex.cpp
index b39f17b51f68..3b4ed71da202 100644
--- a/clang-tools-extra/clangd/index/dex/Dex.cpp
+++ b/clang-tools-extra/clangd/index/dex/Dex.cpp
@@ -249,18 +249,26 @@ void Dex::lookup(const LookupRequest &Req,
   }
 }
 
-void Dex::refs(const RefsRequest &Req,
+bool Dex::refs(const RefsRequest &Req,
                llvm::function_ref<void(const Ref &)> Callback) const {
   trace::Span Tracer("Dex refs");
   uint32_t Remaining =
       Req.Limit.getValueOr(std::numeric_limits<uint32_t>::max());
+  bool More = false;
   for (const auto &ID : Req.IDs)
     for (const auto &Ref : Refs.lookup(ID)) {
-      if (Remaining > 0 && static_cast<int>(Req.Filter & Ref.Kind)) {
+      if (!static_cast<int>(Req.Filter & Ref.Kind))
+        continue;
+      if (Remaining == 0) {
+        More = true;
+        break;
+      }
+      if (Remaining > 0) {
         --Remaining;
         Callback(Ref);
       }
     }
+  return More;
 }
 
 void Dex::relations(

diff  --git a/clang-tools-extra/clangd/index/dex/Dex.h b/clang-tools-extra/clangd/index/dex/Dex.h
index 9e7b987784b0..3a66031a89d0 100644
--- a/clang-tools-extra/clangd/index/dex/Dex.h
+++ b/clang-tools-extra/clangd/index/dex/Dex.h
@@ -77,7 +77,7 @@ class Dex : public SymbolIndex {
   void lookup(const LookupRequest &Req,
               llvm::function_ref<void(const Symbol &)> Callback) const override;
 
-  void refs(const RefsRequest &Req,
+  bool refs(const RefsRequest &Req,
             llvm::function_ref<void(const Ref &)> Callback) const override;
 
   void relations(const RelationsRequest &Req,

diff  --git a/clang-tools-extra/clangd/unittests/CodeCompleteTests.cpp b/clang-tools-extra/clangd/unittests/CodeCompleteTests.cpp
index 02d7750607a4..5b50b9fe9f8b 100644
--- a/clang-tools-extra/clangd/unittests/CodeCompleteTests.cpp
+++ b/clang-tools-extra/clangd/unittests/CodeCompleteTests.cpp
@@ -1193,8 +1193,10 @@ class IndexRequestCollector : public SymbolIndex {
   void lookup(const LookupRequest &,
               llvm::function_ref<void(const Symbol &)>) const override {}
 
-  void refs(const RefsRequest &,
-            llvm::function_ref<void(const Ref &)>) const override {}
+  bool refs(const RefsRequest &,
+            llvm::function_ref<void(const Ref &)>) const override {
+    return false;
+  }
 
   void relations(const RelationsRequest &,
                  llvm::function_ref<void(const SymbolID &, const Symbol &)>)

diff  --git a/clang-tools-extra/clangd/unittests/DexTests.cpp b/clang-tools-extra/clangd/unittests/DexTests.cpp
index 7e4fde9a234f..9402c3c0bf4b 100644
--- a/clang-tools-extra/clangd/unittests/DexTests.cpp
+++ b/clang-tools-extra/clangd/unittests/DexTests.cpp
@@ -687,14 +687,18 @@ TEST(DexTests, Refs) {
   Req.Filter = RefKind::Declaration | RefKind::Definition;
 
   std::vector<std::string> Files;
-  Dex(std::vector<Symbol>{Foo, Bar}, Refs, RelationSlab())
-      .refs(Req, [&](const Ref &R) { Files.push_back(R.Location.FileURI); });
+  EXPECT_FALSE(Dex(std::vector<Symbol>{Foo, Bar}, Refs, RelationSlab())
+                   .refs(Req, [&](const Ref &R) {
+                     Files.push_back(R.Location.FileURI);
+                   }));
   EXPECT_THAT(Files, UnorderedElementsAre("foo.h", "foo.cc"));
 
   Req.Limit = 1;
   Files.clear();
-  Dex(std::vector<Symbol>{Foo, Bar}, Refs, RelationSlab())
-      .refs(Req, [&](const Ref &R) { Files.push_back(R.Location.FileURI); });
+  EXPECT_TRUE(Dex(std::vector<Symbol>{Foo, Bar}, Refs, RelationSlab())
+                  .refs(Req, [&](const Ref &R) {
+                    Files.push_back(R.Location.FileURI);
+                  }));
   EXPECT_THAT(Files, ElementsAre(AnyOf("foo.h", "foo.cc")));
 }
 

diff  --git a/clang-tools-extra/clangd/unittests/IndexTests.cpp b/clang-tools-extra/clangd/unittests/IndexTests.cpp
index e868828d7868..dcbfc4cf5ea0 100644
--- a/clang-tools-extra/clangd/unittests/IndexTests.cpp
+++ b/clang-tools-extra/clangd/unittests/IndexTests.cpp
@@ -389,7 +389,8 @@ TEST(MergeIndexTest, Refs) {
   RefsRequest Request;
   Request.IDs = {Foo.ID};
   RefSlab::Builder Results;
-  Merge.refs(Request, [&](const Ref &O) { Results.insert(Foo.ID, O); });
+  EXPECT_FALSE(
+      Merge.refs(Request, [&](const Ref &O) { Results.insert(Foo.ID, O); }));
   EXPECT_THAT(
       std::move(Results).build(),
       ElementsAre(Pair(
@@ -400,7 +401,8 @@ TEST(MergeIndexTest, Refs) {
 
   Request.Limit = 1;
   RefSlab::Builder Results2;
-  Merge.refs(Request, [&](const Ref &O) { Results2.insert(Foo.ID, O); });
+  EXPECT_TRUE(
+      Merge.refs(Request, [&](const Ref &O) { Results2.insert(Foo.ID, O); }));
   EXPECT_THAT(std::move(Results2).build(),
               ElementsAre(Pair(
                   _, ElementsAre(AnyOf(FileURI("unittest:///test.cc"),

diff  --git a/clang-tools-extra/clangd/unittests/XRefsTests.cpp b/clang-tools-extra/clangd/unittests/XRefsTests.cpp
index 9330c6d366dd..9323dd48473a 100644
--- a/clang-tools-extra/clangd/unittests/XRefsTests.cpp
+++ b/clang-tools-extra/clangd/unittests/XRefsTests.cpp
@@ -2161,9 +2161,10 @@ TEST(FindReferences, NeedsIndex) {
 TEST(FindReferences, NoQueryForLocalSymbols) {
   struct RecordingIndex : public MemIndex {
     mutable Optional<llvm::DenseSet<SymbolID>> RefIDs;
-    void refs(const RefsRequest &Req,
+    bool refs(const RefsRequest &Req,
               llvm::function_ref<void(const Ref &)>) const override {
       RefIDs = Req.IDs;
+      return false;
     }
   };
 


        


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