Redesign SymbolRef, Ref, Use

Remove lsLocationEx

src/config.h

@@ -237,8 +237,6 @@ struct Config {
   } workspaceSymbol;
 
   struct Xref {
-    // If true, |Location[]| response will include lexical container.
-    bool container = false;
     // Maximum number of definition/reference/... results.
     int maxNum = 2000;
   } xref;
@@ -262,7 +260,7 @@ MAKE_REFLECT_STRUCT(Config::Index, blacklist, comments, initialBlacklist,
                     multiVersionWhitelist, onChange, threads, trackDependency,
                     whitelist);
 MAKE_REFLECT_STRUCT(Config::WorkspaceSymbol, caseSensitivity, maxNum, sort);
-MAKE_REFLECT_STRUCT(Config::Xref, container, maxNum);
+MAKE_REFLECT_STRUCT(Config::Xref, maxNum);
 MAKE_REFLECT_STRUCT(Config, compilationDatabaseCommand,
                     compilationDatabaseDirectory, cacheDirectory, cacheFormat,
                     clang, client, codeLens, completion, diagnostics, highlight,

src/indexer.cc

@@ -105,50 +105,109 @@ StringRef GetSourceInRange(const SourceManager &SM, const LangOptions &LangOpts,
                         BInfo.second);
 }
 
-SymbolKind GetSymbolKind(const Decl *D) {
+SymbolKind GetSymbolKind(const Decl *D, lsSymbolKind &kind) {
   switch (D->getKind()) {
-  case Decl::TranslationUnit:
+  case Decl::LinkageSpec:
-    return SymbolKind::File;
+    return SymbolKind::Invalid;
-  case Decl::ObjCMethod:
-  case Decl::FunctionTemplate:
-  case Decl::Function:
-  case Decl::CXXMethod:
-  case Decl::CXXConstructor:
-  case Decl::CXXConversion:
-  case Decl::CXXDestructor:
-    return SymbolKind::Func;
   case Decl::Namespace:
+    kind = lsSymbolKind::Namespace;
+    return SymbolKind::Type;
   case Decl::NamespaceAlias:
+    kind = lsSymbolKind::TypeAlias;
+    return SymbolKind::Type;
   case Decl::ObjCCategory:
+  case Decl::ObjCImplementation:
   case Decl::ObjCInterface:
   case Decl::ObjCProtocol:
+    kind = lsSymbolKind::Interface;
+    return SymbolKind::Type;
+  case Decl::ObjCMethod:
+    kind = lsSymbolKind::Method;
+    return SymbolKind::Func;
+  case Decl::ObjCProperty:
+    kind = lsSymbolKind::Property;
+    return SymbolKind::Type;
   case Decl::ClassTemplate:
+    kind = lsSymbolKind::Class;
+    return SymbolKind::Type;
+  case Decl::FunctionTemplate:
+    kind = lsSymbolKind::Function;
+    return SymbolKind::Func;
   case Decl::TypeAliasTemplate:
+    kind = lsSymbolKind::TypeAlias;
+    return SymbolKind::Type;
+  case Decl::VarTemplate:
+    kind = lsSymbolKind::Variable;
+    return SymbolKind::Var;
   case Decl::TemplateTemplateParm:
+    kind = lsSymbolKind::TypeParameter;
+    return SymbolKind::Type;
   case Decl::Enum:
-  case Decl::Record:
+    kind = lsSymbolKind::Enum;
+    return SymbolKind::Type;
   case Decl::CXXRecord:
+  case Decl::Record:
+    kind = lsSymbolKind::Class;
+    // spec has no Union, use Class
+    if (auto *RD = dyn_cast<RecordDecl>(D))
+      if (RD->getTagKind() == TTK_Struct)
+        kind = lsSymbolKind::Struct;
+    return SymbolKind::Type;
   case Decl::ClassTemplateSpecialization:
   case Decl::ClassTemplatePartialSpecialization:
+    kind = lsSymbolKind::Class;
+    return SymbolKind::Type;
   case Decl::TypeAlias:
   case Decl::Typedef:
   case Decl::UnresolvedUsingTypename:
+    kind = lsSymbolKind::TypeAlias;
     return SymbolKind::Type;
-  case Decl::ObjCProperty:
-  case Decl::VarTemplate:
   case Decl::Binding:
+    kind = lsSymbolKind::Variable;
+    return SymbolKind::Var;
   case Decl::Field:
   case Decl::ObjCIvar:
+    kind = lsSymbolKind::Field;
+    return SymbolKind::Var;
+  case Decl::Function:
+    kind = lsSymbolKind::Function;
+    return SymbolKind::Func;
+  case Decl::CXXMethod: {
+    const auto *MD = cast<CXXMethodDecl>(D);
+    kind = MD->isStatic() ? lsSymbolKind::StaticMethod : lsSymbolKind::Method;
+    return SymbolKind::Func;
+  }
+  case Decl::CXXConstructor:
+    kind = lsSymbolKind::Constructor;
+    return SymbolKind::Func;
+  case Decl::CXXConversion:
+  case Decl::CXXDestructor:
+    kind = lsSymbolKind::Method;
+    return SymbolKind::Func;
   case Decl::Var:
-  case Decl::ParmVar:
-  case Decl::ImplicitParam:
   case Decl::Decomposition:
+    kind = lsSymbolKind::Variable;
+    return SymbolKind::Var;
+  case Decl::ImplicitParam:
+  case Decl::ParmVar:
+    // ccls extension
+    kind = lsSymbolKind::Parameter;
+    return SymbolKind::Var;
   case Decl::VarTemplateSpecialization:
   case Decl::VarTemplatePartialSpecialization:
-  case Decl::EnumConstant:
+    kind = lsSymbolKind::Variable;
-  case Decl::UnresolvedUsingValue:
     return SymbolKind::Var;
+  case Decl::EnumConstant:
+    kind = lsSymbolKind::EnumMember;
+    return SymbolKind::Var;
+  case Decl::UnresolvedUsingValue:
+    kind = lsSymbolKind::Variable;
+    return SymbolKind::Var;
+  case Decl::TranslationUnit:
+    return SymbolKind::Invalid;
+
   default:
+    LOG_S(INFO) << "unhandled " << int(D->getKind());
     return SymbolKind::Invalid;
   }
 }
@@ -406,23 +465,6 @@ public:
     return it->second.usr;
   }
 
-  Use GetUse(IndexFile *db, int lid, Range range, const DeclContext *DC,
-             Role role) const {
-    if (!DC)
-      return {{range, 0, SymbolKind::File, role}, lid};
-    const Decl *D = cast<Decl>(DC);
-    switch (GetSymbolKind(D)) {
-    case SymbolKind::Func:
-      return {{range, db->ToFunc(GetUsr(D)).usr, SymbolKind::Func, role}, lid};
-    case SymbolKind::Type:
-      return {{range, db->ToType(GetUsr(D)).usr, SymbolKind::Type, role}, lid};
-    case SymbolKind::Var:
-      return {{range, db->ToVar(GetUsr(D)).usr, SymbolKind::Var, role}, lid};
-    default:
-      return {{range, 0, SymbolKind::File, role}, lid};
-    }
-  }
-
   PrintingPolicy GetDefaultPolicy() const {
     PrintingPolicy PP(Ctx->getLangOpts());
     PP.AnonymousTagLocations = false;
@@ -575,7 +617,7 @@ public:
       return;
     Range spell =
         FromTokenRange(SM, Ctx->getLangOpts(), SourceRange(Spell, Spell));
-    Use use{{spell, 0, SymbolKind::File, Role::Dynamic}, lid};
+    Use use{{spell, Role::Dynamic}, lid};
     switch (kind) {
     case SymbolKind::Func:
       db->ToFunc(usr).uses.push_back(use);
@@ -689,7 +731,8 @@ public:
     IndexFunc *func = nullptr;
     IndexType *type = nullptr;
     IndexVar *var = nullptr;
-    SymbolKind kind = GetSymbolKind(D);
+    lsSymbolKind ls_kind;
+    SymbolKind kind = GetSymbolKind(D, ls_kind);
 
     if (is_def)
       switch (D->getKind()) {
@@ -719,19 +762,21 @@ public:
 
     auto do_def_decl = [&](auto *entity) {
       if (is_def) {
-        entity->def.spell = GetUse(db, lid, loc, SemDC, role);
+        entity->def.spell = {{loc, role}, lid};
         SourceRange R = OrigD->getSourceRange();
-        entity->def.extent =
+        entity->def.extent = {
-            GetUse(db, lid,
+            {R.getBegin().isFileID() ? FromTokenRange(SM, Lang, R) : loc,
-                   R.getBegin().isFileID() ? FromTokenRange(SM, Lang, R) : loc,
+             Role::None},
-                   LexDC, Role::None);
+            lid};
+        entity->def.parent_kind = lsSymbolKind::File;
+        GetSymbolKind(cast<Decl>(SemDC), entity->def.parent_kind);
       } else if (is_decl) {
         DeclRef &dr = entity->declarations.emplace_back();
-        static_cast<Use&>(dr) = GetUse(db, lid, loc, LexDC, role);
+        static_cast<Use&>(dr) = {{loc, role}, lid};
         SourceRange R = OrigD->getSourceRange();
         dr.extent = R.getBegin().isFileID() ? FromTokenRange(SM, Lang, R) : loc;
       } else {
-        entity->uses.push_back(GetUse(db, lid, loc, LexDC, role));
+        entity->uses.push_back({{loc, role}, lid});
         return;
       }
       if (entity->def.comments[0] == '\0' && g_config->index.comments)
@@ -746,6 +791,7 @@ public:
       return true;
     case SymbolKind::Func:
       func = &db->ToFunc(usr);
+      func->def.kind = ls_kind;
       // Mark as Role::Implicit to span one more column to the left/right.
       if (!is_def && !is_decl &&
           (D->getKind() == Decl::CXXConstructor ||
@@ -758,17 +804,18 @@ public:
         SetName(D, info->short_name, info->qualified, func->def);
       if (is_def || is_decl) {
         const Decl *DC = cast<Decl>(SemDC);
-        if (GetSymbolKind(DC) == SymbolKind::Type)
+        if (GetSymbolKind(DC, ls_kind) == SymbolKind::Type)
           db->ToType(GetUsr(DC)).def.funcs.push_back(usr);
       } else {
         const Decl *DC = cast<Decl>(LexDC);
-        if (GetSymbolKind(DC) == SymbolKind::Func)
+        if (GetSymbolKind(DC, ls_kind) == SymbolKind::Func)
           db->ToFunc(GetUsr(DC))
-              .def.callees.push_back({{loc, usr, SymbolKind::Func, role}});
+              .def.callees.push_back({loc, usr, SymbolKind::Func, role});
       }
       break;
     case SymbolKind::Type:
       type = &db->ToType(usr);
+      type->def.kind = ls_kind;
       do_def_decl(type);
       if (Spell != Loc)
         AddMacroUse(db, SM, usr, SymbolKind::Type, Spell);
@@ -776,12 +823,13 @@ public:
         SetName(D, info->short_name, info->qualified, type->def);
       if (is_def || is_decl) {
         const Decl *DC = cast<Decl>(SemDC);
-        if (GetSymbolKind(DC) == SymbolKind::Type)
+        if (GetSymbolKind(DC, ls_kind) == SymbolKind::Type)
           db->ToType(GetUsr(DC)).def.types.push_back(usr);
       }
       break;
     case SymbolKind::Var:
       var = &db->ToVar(usr);
+      var->def.kind = ls_kind;
       do_def_decl(var);
       if (Spell != Loc)
         AddMacroUse(db, SM, usr, SymbolKind::Var, Spell);
@@ -794,7 +842,7 @@ public:
         T = FD->getType();
       if (is_def || is_decl) {
         const Decl *DC = cast<Decl>(SemDC);
-        if (GetSymbolKind(DC) == SymbolKind::Func)
+        if (GetSymbolKind(DC, ls_kind) == SymbolKind::Func)
           db->ToFunc(GetUsr(DC)).def.vars.push_back(usr);
         else if (auto *ND = dyn_cast<NamespaceDecl>(SemDC))
           db->ToType(GetUsr(ND)).def.vars.emplace_back(usr, -1);
@@ -813,14 +861,15 @@ public:
                 Usr usr1 = GetUsr(D1, &info1);
                 IndexType &type1 = db->ToType(usr1);
                 SourceLocation L1 = D1->getLocation();
-                type1.def.spell =
+                type1.def.spell = {
-                    GetUse(db, lid, FromTokenRange(SM, Lang, {L1, L1}), SemDC,
+                    {FromTokenRange(SM, Lang, {L1, L1}), Role::Definition},
-                           Role::Definition);
+                    lid};
-                type1.def.extent = GetUse(db, lid, FromTokenRange(SM, Lang, R1),
+                type1.def.extent = {{FromTokenRange(SM, Lang, R1), Role::None},
-                                          LexDC, Role::None);
+                                    lid};
                 type1.def.detailed_name = Intern(info1->short_name);
                 type1.def.short_name_size = int16_t(info1->short_name.size());
                 type1.def.kind = lsSymbolKind::TypeParameter;
+                type1.def.parent_kind = lsSymbolKind::Class;
                 var->def.type = usr1;
                 type1.instances.push_back(usr);
                 break;
@@ -837,11 +886,11 @@ public:
         // e.g. lambda parameter
         SourceLocation L = D->getLocation();
         if (SM.getFileID(L) == LocFID) {
-          var->def.spell = GetUse(db, lid, FromTokenRange(SM, Lang, {L, L}),
+          var->def.spell = {
-                                  SemDC, Role::Definition);
+              {FromTokenRange(SM, Lang, {L, L}), Role::Definition}, lid};
-          var->def.extent =
+          var->def.extent = {
-              GetUse(db, lid, FromTokenRange(SM, Lang, D->getSourceRange()),
+              {FromTokenRange(SM, Lang, D->getSourceRange()), Role::None}, lid};
-                     LexDC, Role::None);
+          var->def.parent_kind = lsSymbolKind::Method;
         }
       }
       break;
@@ -849,7 +898,6 @@ public:
 
     switch (D->getKind()) {
     case Decl::Namespace:
-      type->def.kind = lsSymbolKind::Namespace;
       if (D->isFirstDecl()) {
         auto *ND = cast<NamespaceDecl>(D);
         auto *ND1 = cast<Decl>(ND->getParent());
@@ -861,7 +909,6 @@ public:
       }
       break;
     case Decl::NamespaceAlias: {
-      type->def.kind = lsSymbolKind::TypeAlias;
       auto *NAD = cast<NamespaceAliasDecl>(D);
       if (const NamespaceDecl *ND = NAD->getNamespace()) {
         Usr usr1 = GetUsr(ND);
@@ -870,36 +917,6 @@ public:
       }
       break;
     }
-    case Decl::ObjCCategory:
-    case Decl::ObjCImplementation:
-    case Decl::ObjCInterface:
-    case Decl::ObjCProtocol:
-      type->def.kind = lsSymbolKind::Interface;
-      break;
-    case Decl::ObjCMethod:
-      func->def.kind = lsSymbolKind::Method;
-      break;
-    case Decl::ObjCProperty:
-      var->def.kind = lsSymbolKind::Property;
-      break;
-    case Decl::ClassTemplate:
-      type->def.kind = lsSymbolKind::Class;
-      break;
-    case Decl::FunctionTemplate:
-      func->def.kind = lsSymbolKind::Function;
-      break;
-    case Decl::TypeAliasTemplate:
-      type->def.kind = lsSymbolKind::TypeAlias;
-      break;
-    case Decl::VarTemplate:
-      var->def.kind = lsSymbolKind::Variable;
-      break;
-    case Decl::TemplateTemplateParm:
-      type->def.kind = lsSymbolKind::TypeParameter;
-      break;
-    case Decl::Enum:
-      type->def.kind = lsSymbolKind::Enum;
-      break;
     case Decl::CXXRecord:
       if (is_def) {
         auto *RD = dyn_cast<CXXRecordDecl>(D);
@@ -915,9 +932,6 @@ public:
       [[fallthrough]];
     case Decl::Record:
       if (auto *RD = dyn_cast<RecordDecl>(D)) {
-        // spec has no Union, use Class
-        type->def.kind = RD->getTagKind() == TTK_Struct ? lsSymbolKind::Struct
-                                                        : lsSymbolKind::Class;
         if (type->def.detailed_name[0] == '\0' && info->short_name.empty()) {
           StringRef Tag;
           switch (RD->getTagKind()) {
@@ -975,7 +989,6 @@ public:
     case Decl::TypeAlias:
     case Decl::Typedef:
     case Decl::UnresolvedUsingTypename:
-      type->def.kind = lsSymbolKind::TypeAlias;
       if (auto *TD = dyn_cast<TypedefNameDecl>(D)) {
         bool specialization = false;
         QualType T = TD->getUnderlyingType();
@@ -987,29 +1000,14 @@ public:
           if (specialization) {
             const TypeSourceInfo *TSI = TD->getTypeSourceInfo();
             SourceLocation L1 = TSI->getTypeLoc().getBeginLoc();
-            if (SM.getFileID(L1) == LocFID) {
+            if (SM.getFileID(L1) == LocFID)
-              Range loc1 = FromTokenRange(SM, Lang, {L1, L1});
               type1.uses.push_back(
-                  GetUse(db, lid, loc1, LexDC, Role::Reference));
+                  {{FromTokenRange(SM, Lang, {L1, L1}), Role::Reference}, lid});
-            }
           }
         }
       }
       break;
-    case Decl::Binding:
+    case Decl::CXXMethod:
-      var->def.kind = lsSymbolKind::Variable;
-      break;
-    case Decl::Field:
-    case Decl::ObjCIvar:
-      var->def.kind = lsSymbolKind::Field;
-      break;
-    case Decl::Function:
-      func->def.kind = lsSymbolKind::Function;
-      break;
-    case Decl::CXXMethod: {
-      const auto *MD = cast<CXXMethodDecl>(D);
-      func->def.kind =
-          MD->isStatic() ? lsSymbolKind::StaticMethod : lsSymbolKind::Method;
       if (is_def || is_decl) {
         if (auto *ND = dyn_cast<NamedDecl>(D)) {
           SmallVector<const NamedDecl *, 8> OverDecls;
@@ -1022,29 +1020,7 @@ public:
         }
       }
       break;
-    }
-    case Decl::CXXConstructor:
-      func->def.kind = lsSymbolKind::Constructor;
-      break;
-    case Decl::CXXConversion:
-    case Decl::CXXDestructor:
-      func->def.kind = lsSymbolKind::Method;
-      break;
-    case Decl::Var:
-    case Decl::Decomposition:
-      var->def.kind = lsSymbolKind::Variable;
-      break;
-    case Decl::ImplicitParam:
-    case Decl::ParmVar:
-      // ccls extension
-      var->def.kind = lsSymbolKind::Parameter;
-      break;
-    case Decl::VarTemplateSpecialization:
-    case Decl::VarTemplatePartialSpecialization:
-      var->def.kind = lsSymbolKind::Variable;
-      break;
     case Decl::EnumConstant:
-      var->def.kind = lsSymbolKind::EnumMember;
       if (is_def && strchr(var->def.detailed_name, '=') == nullptr) {
         auto *ECD = cast<EnumConstantDecl>(D);
         const auto &Val = ECD->getInitVal();
@@ -1054,11 +1030,7 @@ public:
         var->def.hover = Intern(var->def.detailed_name + init);
       }
       break;
-    case Decl::UnresolvedUsingValue:
-      var->def.kind = lsSymbolKind::Variable;
-      break;
     default:
-      LOG_S(INFO) << "Unhandled " << int(D->getKind());
       break;
     }
     return true;
@@ -1116,16 +1088,17 @@ public:
       IndexVar &var = db->ToVar(usr);
       auto range = FromTokenRange(SM, Lang, {L, L}, &UniqueID);
       var.def.kind = lsSymbolKind::Macro;
+      var.def.parent_kind = lsSymbolKind::File;
       if (var.def.spell) {
         DeclRef &d = var.declarations.emplace_back();
         static_cast<Use&>(d) = *var.def.spell;
         d.extent = var.def.spell->range;
       }
-      var.def.spell = Use{{range, 0, SymbolKind::File, Role::Definition}};
+      var.def.spell = Use{{range, Role::Definition}};
       const MacroInfo *MI = MD->getMacroInfo();
       SourceRange R(MI->getDefinitionLoc(), MI->getDefinitionEndLoc());
       range = FromTokenRange(SM, param.Ctx->getLangOpts(), R);
-      var.def.extent = Use{{range, 0, SymbolKind::File, Role::None}};
+      var.def.extent = Use{{range, Role::None}};
       if (var.def.detailed_name[0] == '\0') {
         var.def.detailed_name = Intern(Name);
         var.def.short_name_size = Name.size();
@@ -1147,8 +1120,8 @@ public:
     if (IndexFile *db = param.ConsumeFile(*FE)) {
       IndexVar &var = db->ToVar(GetMacro(Tok).second);
       var.uses.push_back(
-          {{FromTokenRange(SM, param.Ctx->getLangOpts(), {L, L}, &UniqueID), 0,
+          {{FromTokenRange(SM, param.Ctx->getLangOpts(), {L, L}, &UniqueID),
-            SymbolKind::File, Role::Dynamic}});
+            Role::Dynamic}});
     }
   }
   void MacroUndefined(const Token &Tok, const MacroDefinition &MD,
@@ -1183,7 +1156,7 @@ public:
 };
 } // namespace
 
-const int IndexFile::kMajorVersion = 18;
+const int IndexFile::kMajorVersion = 19;
 const int IndexFile::kMinorVersion = 0;
 
 IndexFile::IndexFile(llvm::sys::fs::UniqueID UniqueID, const std::string &path,
@@ -1365,10 +1338,7 @@ Index(CompletionManager *completion, WorkingFiles *wfiles, VFS *vfs,
 }
 } // namespace ccls::idx
 
-// |SymbolRef| is serialized this way.
+void Reflect(Reader &vis, SymbolRef &v) {
-// |Use| also uses this though it has an extra field |file|,
-// which is not used by Index* so it does not need to be serialized.
-void Reflect(Reader &vis, Reference &v) {
   if (vis.Format() == SerializeFormat::Json) {
     std::string t = vis.GetString();
     char *s = const_cast<char *>(t.c_str());
@@ -1384,7 +1354,7 @@ void Reflect(Reader &vis, Reference &v) {
     Reflect(vis, v.role);
   }
 }
-void Reflect(Writer &vis, Reference &v) {
+void Reflect(Writer &vis, SymbolRef &v) {
   if (vis.Format() == SerializeFormat::Json) {
     char buf[99];
     snprintf(buf, sizeof buf, "%s|%" PRIu64 "|%d|%d",
@@ -1405,25 +1375,24 @@ void Reflect(Reader &vis, Use &v) {
     char *s = const_cast<char *>(t.c_str());
     v.range = Range::FromString(s);
     s = strchr(s, '|');
-    v.usr = strtoull(s + 1, &s, 10);
-    v.kind = static_cast<SymbolKind>(strtol(s + 1, &s, 10));
     v.role = static_cast<Role>(strtol(s + 1, &s, 10));
     v.file_id = static_cast<int>(strtol(s + 1, &s, 10));
   } else {
-    Reflect(vis, static_cast<Reference &>(v));
+    Reflect(vis, v.range);
+    Reflect(vis, v.role);
     Reflect(vis, v.file_id);
   }
 }
 void Reflect(Writer &vis, Use &v) {
   if (vis.Format() == SerializeFormat::Json) {
     char buf[99];
-    snprintf(buf, sizeof buf, "%s|%" PRIu64 "|%d|%d|%d",
+    snprintf(buf, sizeof buf, "%s|%d|%d", v.range.ToString().c_str(),
-             v.range.ToString().c_str(), v.usr, int(v.kind), int(v.role),
+             int(v.role), v.file_id);
-             v.file_id);
     std::string s(buf);
     Reflect(vis, s);
   } else {
-    Reflect(vis, static_cast<Reference &>(v));
+    Reflect(vis, v.range);
+    Reflect(vis, v.role);
     Reflect(vis, v.file_id);
   }
 }
@@ -1435,9 +1404,7 @@ void Reflect(Reader &vis, DeclRef &v) {
     v.range = Range::FromString(s);
     s = strchr(s, '|') + 1;
     v.extent = Range::FromString(s);
-    s = strchr(s, '|') + 1;
+    s = strchr(s, '|');
-    v.usr = strtoull(s, &s, 10);
-    v.kind = static_cast<SymbolKind>(strtol(s + 1, &s, 10));
     v.role = static_cast<Role>(strtol(s + 1, &s, 10));
     v.file_id = static_cast<int>(strtol(s + 1, &s, 10));
   } else {
@@ -1448,9 +1415,8 @@ void Reflect(Reader &vis, DeclRef &v) {
 void Reflect(Writer &vis, DeclRef &v) {
   if (vis.Format() == SerializeFormat::Json) {
     char buf[99];
-    snprintf(buf, sizeof buf, "%s|%s|%" PRIu64 "|%d|%d|%d",
+    snprintf(buf, sizeof buf, "%s|%s|%d|%d", v.range.ToString().c_str(),
-             v.range.ToString().c_str(), v.extent.ToString().c_str(), v.usr,
+             v.extent.ToString().c_str(), int(v.role), v.file_id);
-             int(v.kind), int(v.role), v.file_id);
     std::string s(buf);
     Reflect(vis, s);
   } else {

src/indexer.h

@@ -37,28 +37,36 @@ struct SymbolIdx {
 };
 MAKE_REFLECT_STRUCT(SymbolIdx, usr, kind);
 
-struct Reference {
+// |id,kind| refer to the referenced entity.
+struct SymbolRef {
   Range range;
   Usr usr;
   SymbolKind kind;
   Role role;
-
-  bool Valid() const { return range.Valid(); }
   operator SymbolIdx() const { return {usr, kind}; }
   std::tuple<Range, Usr, SymbolKind, Role> ToTuple() const {
     return std::make_tuple(range, usr, kind, role);
   }
-  bool operator==(const Reference &o) const { return ToTuple() == o.ToTuple(); }
+  bool operator==(const SymbolRef &o) const { return ToTuple() == o.ToTuple(); }
-  bool operator<(const Reference &o) const { return ToTuple() < o.ToTuple(); }
+  bool Valid() const { return range.Valid(); }
 };
-
-// |id,kind| refer to the referenced entity.
-struct SymbolRef : Reference {};
 MAKE_HASHABLE(SymbolRef, t.range, t.usr, t.kind, t.role);
 
+struct Ref {
+  Range range;
+  Role role;
+
+  bool Valid() const { return range.Valid(); }
+  std::tuple<Range, Role> ToTuple() const {
+    return std::make_tuple(range, role);
+  }
+  bool operator==(const Ref &o) const { return ToTuple() == o.ToTuple(); }
+  bool operator<(const Ref &o) const { return ToTuple() < o.ToTuple(); }
+};
+
 // Represents an occurrence of a variable/type, |usr,kind| refer to the lexical
 // parent.
-struct Use : Reference {
+struct Use : Ref {
   // |file| is used in Query* but not in Index*
   int file_id = -1;
   bool operator==(const Use &o) const {
@@ -73,8 +81,8 @@ struct DeclRef : Use {
 };
 MAKE_HASHABLE(DeclRef, t.range, t.file_id)
 
-void Reflect(Reader &visitor, Reference &value);
+void Reflect(Reader &visitor, SymbolRef &value);
-void Reflect(Writer &visitor, Reference &value);
+void Reflect(Writer &visitor, SymbolRef &value);
 void Reflect(Reader &visitor, Use &value);
 void Reflect(Writer &visitor, Use &value);
 void Reflect(Reader &visitor, DeclRef &value);
@@ -103,74 +111,71 @@ struct FuncDef : NameMixin<FuncDef> {
 
   // Method this method overrides.
   std::vector<Usr> bases;
-
   // Local variables or parameters.
   std::vector<Usr> vars;
-
   // Functions that this function calls.
   std::vector<SymbolRef> callees;
 
-  int file_id = -1;
+  int file_id = -1; // not serialized
   int16_t qual_name_offset = 0;
   int16_t short_name_offset = 0;
   int16_t short_name_size = 0;
   lsSymbolKind kind = lsSymbolKind::Unknown;
+  lsSymbolKind parent_kind = lsSymbolKind::Unknown;
   uint8_t storage = clang::SC_None;
 
   std::vector<Usr> GetBases() const { return bases; }
 };
-MAKE_REFLECT_STRUCT(FuncDef, detailed_name, qual_name_offset, short_name_offset,
+MAKE_REFLECT_STRUCT(FuncDef, detailed_name, hover, comments, spell, extent,
-                    short_name_size, kind, storage, hover, comments, spell,
+                    bases, vars, callees, qual_name_offset, short_name_offset,
-                    extent, bases, vars, callees);
+                    short_name_size, kind, parent_kind, storage);
 
 struct IndexFunc : NameMixin<IndexFunc> {
   using Def = FuncDef;
   Usr usr;
   Def def;
   std::vector<DeclRef> declarations;
-  std::vector<Use> uses;
   std::vector<Usr> derived;
+  std::vector<Use> uses;
 };
 
 struct TypeDef : NameMixin<TypeDef> {
   const char *detailed_name = "";
   const char *hover = "";
   const char *comments = "";
-
   Maybe<Use> spell;
   Maybe<Use> extent;
 
   std::vector<Usr> bases;
-
   // Types, functions, and variables defined in this type.
-  std::vector<Usr> types;
   std::vector<Usr> funcs;
+  std::vector<Usr> types;
   std::vector<std::pair<Usr, int64_t>> vars;
 
   // If set, then this is the same underlying type as the given value (ie, this
   // type comes from a using or typedef statement).
   Usr alias_of = 0;
-
+  int file_id = -1; // not serialized
-  int file_id = -1;
   int16_t qual_name_offset = 0;
   int16_t short_name_offset = 0;
   int16_t short_name_size = 0;
   lsSymbolKind kind = lsSymbolKind::Unknown;
+  lsSymbolKind parent_kind = lsSymbolKind::Unknown;
 
   std::vector<Usr> GetBases() const { return bases; }
 };
-MAKE_REFLECT_STRUCT(TypeDef, detailed_name, qual_name_offset, short_name_offset,
+MAKE_REFLECT_STRUCT(TypeDef, detailed_name, hover, comments, spell, extent,
-                    short_name_size, kind, hover, comments, spell, extent,
+                    bases, funcs, types, vars, alias_of, qual_name_offset,
-                    alias_of, bases, types, funcs, vars);
+                    short_name_offset, short_name_size, kind, parent_kind);
 
 struct IndexType {
   using Def = TypeDef;
   Usr usr;
   Def def;
   std::vector<DeclRef> declarations;
-  std::vector<Use> uses;
   std::vector<Usr> derived;
   std::vector<Usr> instances;
+  std::vector<Use> uses;
 };
 
 struct VarDef : NameMixin<VarDef> {
@@ -183,27 +188,29 @@ struct VarDef : NameMixin<VarDef> {
 
   // Type of the variable.
   Usr type = 0;
-
+  int file_id = -1; // not serialized
-  int file_id = -1;
   int16_t qual_name_offset = 0;
   int16_t short_name_offset = 0;
   int16_t short_name_size = 0;
-
   lsSymbolKind kind = lsSymbolKind::Unknown;
+  lsSymbolKind parent_kind = lsSymbolKind::Unknown;
   // Note a variable may have instances of both |None| and |Extern|
   // (declaration).
   uint8_t storage = clang::SC_None;
 
   bool is_local() const {
-    return spell && spell->kind == SymbolKind::Func &&
+    return spell &&
+           (parent_kind == lsSymbolKind::Function ||
+            parent_kind == lsSymbolKind::Method ||
+            parent_kind == lsSymbolKind::StaticMethod) &&
            storage == clang::SC_None;
   }
 
   std::vector<Usr> GetBases() const { return {}; }
 };
-MAKE_REFLECT_STRUCT(VarDef, detailed_name, qual_name_offset, short_name_offset,
+MAKE_REFLECT_STRUCT(VarDef, detailed_name, hover, comments, spell, extent, type,
-                    short_name_size, hover, comments, spell, extent, type, kind,
+                    qual_name_offset, short_name_offset, short_name_size, kind,
-                    storage);
+                    parent_kind, storage);
 
 struct IndexVar {
   using Def = VarDef;

src/lsp.h

@@ -186,15 +186,6 @@ enum class lsSymbolKind : uint8_t {
 };
 MAKE_REFLECT_TYPE_PROXY(lsSymbolKind);
 
-// ccls extension
-struct lsLocationEx : lsLocation {
-  std::optional<std::string_view> containerName;
-  std::optional<lsSymbolKind> parentKind;
-  // Avoid circular dependency on symbol.h
-  std::optional<uint16_t> role;
-};
-MAKE_REFLECT_STRUCT(lsLocationEx, uri, range, containerName, parentKind, role);
-
 struct lsTextDocumentIdentifier {
   lsDocumentUri uri;
 };
@@ -334,6 +325,6 @@ void Reflect(TVisitor &visitor, Out_ShowLogMessage &value) {
 
 struct Out_LocationList : public lsOutMessage<Out_LocationList> {
   lsRequestId id;
-  std::vector<lsLocationEx> result;
+  std::vector<lsLocation> result;
 };
 MAKE_REFLECT_STRUCT(Out_LocationList, jsonrpc, id, result);

src/message_handler.cc

@@ -144,24 +144,15 @@ void EmitSemanticHighlighting(DB *db, WorkingFile *wfile, QueryFile *file) {
       const QueryFunc::Def *def = func.AnyDef();
       if (!def)
         continue; // applies to for loop
-      if (def->spell)
-        parent_kind = GetSymbolKind(db, *def->spell);
-      if (parent_kind == lsSymbolKind::Unknown) {
-        for (Use use : func.declarations) {
-          parent_kind = GetSymbolKind(db, use);
-          break;
-        }
-      }
       // Don't highlight overloadable operators or implicit lambda ->
       // std::function constructor.
       std::string_view short_name = def->Name(false);
       if (short_name.compare(0, 8, "operator") == 0)
         continue; // applies to for loop
-      if (def->spell)
-        parent_kind = GetSymbolKind(db, *def->spell);
       kind = def->kind;
       storage = def->storage;
       detailed_name = short_name;
+      parent_kind = def->parent_kind;
 
       // Check whether the function name is actually there.
       // If not, do not publish the semantic highlight.
@@ -188,7 +179,7 @@ void EmitSemanticHighlighting(DB *db, WorkingFile *wfile, QueryFile *file) {
         kind = def.kind;
         detailed_name = def.detailed_name;
         if (def.spell) {
-          parent_kind = GetSymbolKind(db, *def.spell);
+          parent_kind = def.parent_kind;
           break;
         }
       }
@@ -202,13 +193,7 @@ void EmitSemanticHighlighting(DB *db, WorkingFile *wfile, QueryFile *file) {
         storage = def.storage;
         detailed_name = def.detailed_name;
         if (def.spell) {
-          parent_kind = GetSymbolKind(db, *def.spell);
+          parent_kind = def.parent_kind;
-          break;
-        }
-      }
-      if (parent_kind == lsSymbolKind::Unknown) {
-        for (Use use : var.declarations) {
-          parent_kind = GetSymbolKind(db, use);
           break;
         }
       }

src/messages/ccls_call.cc

@@ -65,6 +65,8 @@ struct Out_CclsCall : public lsOutMessage<Out_CclsCall> {
     int numChildren;
     // Empty if the |levels| limit is reached.
     std::vector<Entry> children;
+    bool operator==(const Entry &o) const { return location == o.location; }
+    bool operator<(const Entry &o) const { return location < o.location; }
   };
 
   lsRequestId id;
@@ -82,13 +84,14 @@ bool Expand(MessageHandler *m, Out_CclsCall::Entry *entry, bool callee,
   entry->numChildren = 0;
   if (!def)
     return false;
-  auto handle = [&](Use use, CallType call_type1) {
+  auto handle = [&](SymbolRef sym, int file_id, CallType call_type1) {
     entry->numChildren++;
     if (levels > 0) {
       Out_CclsCall::Entry entry1;
-      entry1.id = std::to_string(use.usr);
+      entry1.id = std::to_string(sym.usr);
-      entry1.usr = use.usr;
+      entry1.usr = sym.usr;
-      if (auto loc = GetLsLocation(m->db, m->working_files, use))
+      if (auto loc = GetLsLocation(m->db, m->working_files,
+                                   Use{{sym.range, sym.role}, file_id}))
         entry1.location = *loc;
       entry1.callType = call_type1;
       if (Expand(m, &entry1, callee, call_type, qualified, levels - 1))
@@ -98,14 +101,22 @@ bool Expand(MessageHandler *m, Out_CclsCall::Entry *entry, bool callee,
   auto handle_uses = [&](const QueryFunc &func, CallType call_type) {
     if (callee) {
       if (const auto *def = func.AnyDef())
-        for (SymbolRef ref : def->callees)
+        for (SymbolRef sym : def->callees)
-          if (ref.kind == SymbolKind::Func)
+          if (sym.kind == SymbolKind::Func)
-            handle(Use{{ref.range, ref.usr, ref.kind, ref.role}, def->file_id},
+            handle(sym, def->file_id, call_type);
-                   call_type);
     } else {
-      for (Use use : func.uses)
+      for (Use use : func.uses) {
-        if (use.kind == SymbolKind::Func)
+        const QueryFile &file1 = m->db->files[use.file_id];
-          handle(use, call_type);
+        Maybe<SymbolRef> best_sym;
+        for (auto [sym, refcnt] : file1.outline2refcnt)
+          if (refcnt > 0 && sym.kind == SymbolKind::Func &&
+              sym.range.start <= use.range.start &&
+              use.range.end <= sym.range.end &&
+              (!best_sym || best_sym->range.start < sym.range.start))
+            best_sym = sym;
+        if (best_sym)
+          handle(*best_sym, use.file_id, call_type);
+      }
     }
   };
 
@@ -148,6 +159,11 @@ bool Expand(MessageHandler *m, Out_CclsCall::Entry *entry, bool callee,
       });
     }
   }
+
+  std::sort(entry->children.begin(), entry->children.end());
+  entry->children.erase(
+      std::unique(entry->children.begin(), entry->children.end()),
+      entry->children.end());
   return true;
 }
 

src/messages/ccls_navigate.cc

@@ -104,7 +104,7 @@ struct Handler_CclsNavigate : BaseMessageHandler<In_CclsNavigate> {
     out.id = request->id;
     if (res)
       if (auto ls_range = GetLsRange(wfile, *res)) {
-        lsLocationEx &ls_loc = out.result.emplace_back();
+        lsLocation &ls_loc = out.result.emplace_back();
         ls_loc.uri = params.textDocument.uri;
         ls_loc.range = *ls_range;
       }

src/messages/ccls_vars.cc

@@ -51,7 +51,7 @@ struct Handler_CclsVars : BaseMessageHandler<In_CclsVars> {
         [[fallthrough]];
       }
       case SymbolKind::Type:
-        out.result = GetLsLocationExs(
+        out.result = GetLsLocations(
             db, working_files,
             GetVarDeclarations(db, db->Type(usr).instances, params.kind));
         break;

src/messages/textDocument_codeLens.cc

@@ -105,19 +105,19 @@ struct Handler_TextDocumentCodeLens
       code_lens.command->arguments.push_back(ToString(show));
     };
 
-    auto ToSpell = [&](Use use) {
+    auto ToSpell = [&](SymbolRef sym, int file_id) -> Use {
-      Maybe<Use> def = GetDefinitionSpell(db, use);
+      Maybe<Use> def = GetDefinitionSpell(db, sym);
-      if (def && def->file_id == use.file_id &&
+      if (def && def->file_id == file_id &&
-          def->range.start.line == use.range.start.line)
+          def->range.start.line == sym.range.start.line)
         return *def;
-      return use;
+      return {{sym.range, sym.role}, file_id};
     };
 
     std::unordered_set<Range> seen;
     for (auto [sym, refcnt] : file->outline2refcnt) {
       if (refcnt <= 0 || !seen.insert(sym.range).second)
         continue;
-      Use use = ToSpell({{sym.range, sym.usr, sym.kind, sym.role}, file->id});
+      Use use = ToSpell(sym, file->id);
       switch (sym.kind) {
       case SymbolKind::Func: {
         QueryFunc &func = db->GetFunc(sym);

src/messages/textDocument_definition.cc

@@ -21,13 +21,6 @@ struct In_TextDocumentDefinition : public RequestInMessage {
 MAKE_REFLECT_STRUCT(In_TextDocumentDefinition, id, params);
 REGISTER_IN_MESSAGE(In_TextDocumentDefinition);
 
-struct Out_TextDocumentDefinition
-    : public lsOutMessage<Out_TextDocumentDefinition> {
-  lsRequestId id;
-  std::vector<lsLocationEx> result;
-};
-MAKE_REFLECT_STRUCT(Out_TextDocumentDefinition, jsonrpc, id, result);
-
 std::vector<Use> GetNonDefDeclarationTargets(DB *db, SymbolRef sym) {
   switch (sym.kind) {
   case SymbolKind::Var: {
@@ -61,7 +54,7 @@ struct Handler_TextDocumentDefinition
                         params.textDocument.uri.GetPath(), &file, &file_id))
       return;
 
-    Out_TextDocumentDefinition out;
+    Out_LocationList out;
     out.id = request->id;
 
     Maybe<Use> on_def;
@@ -98,7 +91,7 @@ struct Handler_TextDocumentDefinition
         if (uses.empty() && on_def)
           uses.push_back(*on_def);
       }
-      auto locs = GetLsLocationExs(db, working_files, uses);
+      auto locs = GetLsLocations(db, working_files, uses);
       out.result.insert(out.result.end(), locs.begin(), locs.end());
     }
 
@@ -111,9 +104,8 @@ struct Handler_TextDocumentDefinition
       // Check #include
       for (const IndexInclude &include : file->def->includes) {
         if (include.line == ls_pos.line) {
-          lsLocationEx result;
+          out.result.push_back(
-          result.uri = lsDocumentUri::FromPath(include.resolved_path);
+              lsLocation{lsDocumentUri::FromPath(include.resolved_path)});
-          out.result.push_back(result);
           range = {{0, 0}, {0, 0}};
           break;
         }
@@ -172,9 +164,8 @@ struct Handler_TextDocumentDefinition
         if (best_sym.kind != SymbolKind::Invalid) {
           Maybe<Use> use = GetDefinitionSpell(db, best_sym);
           assert(use);
-          if (auto ls_loc = GetLsLocationEx(db, working_files, *use,
+          if (auto loc = GetLsLocation(db, working_files, *use))
-                                            g_config->xref.container))
+            out.result.push_back(*loc);
-            out.result.push_back(*ls_loc);
         }
       }
     }

src/messages/textDocument_documentHighlight.cc

@@ -68,11 +68,9 @@ struct Handler_TextDocumentDocumentHighlight
             return usr == sym1.usr && kind == sym1.kind;
           }))
         continue;
-      if (auto ls_loc =
+      if (auto loc = GetLsLocation(db, working_files, sym, file_id)) {
-              GetLsLocation(db, working_files,
-                            Use{{sym.range, usr, kind, sym.role}, file_id})) {
         lsDocumentHighlight highlight;
-        highlight.range = ls_loc->range;
+        highlight.range = loc->range;
         if (sym.role & Role::Write)
           highlight.kind = lsDocumentHighlight::Write;
         else if (sym.role & Role::Read)

src/messages/textDocument_documentSymbol.cc

@@ -95,10 +95,8 @@ struct Handler_TextDocumentDocumentSymbol
       for (auto [sym, refcnt] : symbol2refcnt)
         if (refcnt > 0 && params.startLine <= sym.range.start.line &&
             sym.range.start.line <= params.endLine)
-          if (auto ls_loc = GetLsLocation(
+          if (auto loc = GetLsLocation(db, working_files, sym, file_id))
-                  db, working_files,
+            out.result.push_back(loc->range);
-                  Use{{sym.range, sym.usr, sym.kind, sym.role}, file_id}))
-            out.result.push_back(ls_loc->range);
       std::sort(out.result.begin(), out.result.end());
       pipeline::WriteStdout(kMethodType, out);
     } else if (g_config->client.hierarchicalDocumentSymbolSupport) {
@@ -201,10 +199,8 @@ struct Handler_TextDocumentDocumentSymbol
               (sym.kind == SymbolKind::Var &&
                IgnoreVar(db->GetVar(sym).AnyDef())))
             continue;
-          if (std::optional<lsLocation> location = GetLsLocation(
+          if (auto loc = GetLsLocation(db, working_files, sym, file_id)) {
-                  db, working_files,
+            info->location = *loc;
-                  Use{{sym.range, sym.usr, sym.kind, sym.role}, file_id})) {
-            info->location = *location;
             out.result.push_back(*info);
           }
         }

src/messages/textDocument_implementation.cc

@@ -35,12 +35,12 @@ struct Handler_TextDocumentImplementation
          FindSymbolsAtLocation(working_file, file, request->params.position)) {
       if (sym.kind == SymbolKind::Type) {
         QueryType &type = db->GetType(sym);
-        out.result = GetLsLocationExs(db, working_files,
+        out.result = GetLsLocations(db, working_files,
                                     GetTypeDeclarations(db, type.derived));
         break;
       } else if (sym.kind == SymbolKind::Func) {
         QueryFunc &func = db->GetFunc(sym);
-        out.result = GetLsLocationExs(db, working_files,
+        out.result = GetLsLocations(db, working_files,
                                     GetFuncDeclarations(db, func.derived));
         break;
       }

src/messages/textDocument_references.cc

@@ -38,13 +38,6 @@ MAKE_REFLECT_STRUCT(In_TextDocumentReferences::Params, textDocument, position,
 MAKE_REFLECT_STRUCT(In_TextDocumentReferences, id, params);
 REGISTER_IN_MESSAGE(In_TextDocumentReferences);
 
-struct Out_TextDocumentReferences
-    : public lsOutMessage<Out_TextDocumentReferences> {
-  lsRequestId id;
-  std::vector<lsLocationEx> result;
-};
-MAKE_REFLECT_STRUCT(Out_TextDocumentReferences, jsonrpc, id, result);
-
 struct Handler_TextDocumentReferences
     : BaseMessageHandler<In_TextDocumentReferences> {
   MethodType GetMethodType() const override { return kMethodType; }
@@ -55,7 +48,7 @@ struct Handler_TextDocumentReferences
     if (!FindFileOrFail(db, project, request->id,
                         params.textDocument.uri.GetPath(), &file))
       return;
-    Out_TextDocumentReferences out;
+    Out_LocationList out;
     out.id = request->id;
     WorkingFile *wfile = working_files->GetFileByFilename(file->def->path);
     if (!file) {
@@ -63,7 +56,6 @@ struct Handler_TextDocumentReferences
       return;
     }
 
-    bool container = g_config->xref.container;
     std::unordered_set<Use> seen_uses;
     int line = params.position.line;
 
@@ -81,11 +73,8 @@ struct Handler_TextDocumentReferences
           if (Role(use.role & params.context.role) == params.context.role &&
               !(use.role & params.context.excludeRole) &&
               seen_uses.insert(use).second)
-            if (std::optional<lsLocationEx> ls_loc =
+            if (auto loc = GetLsLocation(db, working_files, use)) {
-                    GetLsLocationEx(db, working_files, use, container)) {
+              out.result.push_back(*loc);
-              if (container)
-                ls_loc->parentKind = parent_kind;
-              out.result.push_back(*ls_loc);
             }
         };
         WithEntity(db, sym, [&](const auto &entity) {
@@ -133,10 +122,9 @@ struct Handler_TextDocumentReferences
             for (const IndexInclude &include : file1.def->includes)
               if (include.resolved_path == path) {
                 // Another file |file1| has the same include line.
-                lsLocationEx result;
+                lsLocation &loc = out.result.emplace_back();
-                result.uri = lsDocumentUri::FromPath(file1.def->path);
+                loc.uri = lsDocumentUri::FromPath(file1.def->path);
-                result.range.start.line = result.range.end.line = include.line;
+                loc.range.start.line = loc.range.end.line = include.line;
-                out.result.push_back(std::move(result));
                 break;
               }
     }

src/messages/textDocument_typeDefinition.cc

@@ -16,13 +16,6 @@ struct In_TextDocumentTypeDefinition : public RequestInMessage {
 MAKE_REFLECT_STRUCT(In_TextDocumentTypeDefinition, id, params);
 REGISTER_IN_MESSAGE(In_TextDocumentTypeDefinition);
 
-struct Out_TextDocumentTypeDefinition
-    : public lsOutMessage<Out_TextDocumentTypeDefinition> {
-  lsRequestId id;
-  std::vector<lsLocationEx> result;
-};
-MAKE_REFLECT_STRUCT(Out_TextDocumentTypeDefinition, jsonrpc, id, result);
-
 struct Handler_TextDocumentTypeDefinition
     : BaseMessageHandler<In_TextDocumentTypeDefinition> {
   MethodType GetMethodType() const override { return kMethodType; }
@@ -35,19 +28,17 @@ struct Handler_TextDocumentTypeDefinition
     WorkingFile *working_file =
         working_files->GetFileByFilename(file->def->path);
 
-    Out_TextDocumentTypeDefinition out;
+    Out_LocationList out;
     out.id = request->id;
     auto Add = [&](const QueryType &type) {
       for (const auto &def : type.def)
         if (def.spell) {
-          if (auto ls_loc = GetLsLocationEx(db, working_files, *def.spell,
+          if (auto ls_loc = GetLsLocation(db, working_files, *def.spell))
-                                            g_config->xref.container))
             out.result.push_back(*ls_loc);
         }
       if (out.result.empty())
         for (const DeclRef &dr : type.declarations)
-          if (auto ls_loc = GetLsLocationEx(db, working_files, dr,
+          if (auto ls_loc = GetLsLocation(db, working_files, dr))
-                                            g_config->xref.container))
             out.result.push_back(*ls_loc);
     };
     for (SymbolRef sym :

src/query.cc

@@ -22,8 +22,6 @@ void AssignFileId(const Lid2file_id &lid2file_id, int file_id, Use &use) {
     use.file_id = file_id;
   else
     use.file_id = lid2file_id.find(use.file_id)->second;
-  if (use.kind == SymbolKind::File)
-    use.usr = use.file_id;
 }
 
 template <typename T>
@@ -226,7 +224,7 @@ void DB::ApplyIndexUpdate(IndexUpdate *u) {
                  SymbolKind kind, Use &use, int delta, int k = 1) {
     use.file_id =
         use.file_id == -1 ? u->file_id : lid2fid.find(use.file_id)->second;
-    SymbolRef sym{{use.range, usr, kind, use.role}};
+    SymbolRef sym{use.range, usr, kind, use.role};
     if (k & 1) {
       int &v = files[use.file_id].symbol2refcnt[sym];
       v += delta;
@@ -246,7 +244,7 @@ void DB::ApplyIndexUpdate(IndexUpdate *u) {
                      SymbolKind kind, DeclRef &dr, int delta) {
     Ref(lid2fid, usr, kind, dr, delta, 1);
     files[dr.file_id]
-        .outline2refcnt[SymbolRef{{dr.extent, usr, kind, dr.role}}] += delta;
+        .outline2refcnt[SymbolRef{dr.extent, usr, kind, dr.role}] += delta;
   };
 
   auto UpdateUses =
@@ -389,12 +387,12 @@ void DB::Update(const Lid2file_id &lid2file_id, int file_id,
     if (def.spell) {
       AssignFileId(lid2file_id, file_id, *def.spell);
       files[def.spell->file_id].symbol2refcnt[{
-          {def.spell->range, u.first, SymbolKind::Func, def.spell->role}}]++;
+          def.spell->range, u.first, SymbolKind::Func, def.spell->role}]++;
     }
     if (def.extent) {
       AssignFileId(lid2file_id, file_id, *def.extent);
       files[def.extent->file_id].outline2refcnt[{
-          {def.extent->range, u.first, SymbolKind::Func, def.extent->role}}]++;
+          def.extent->range, u.first, SymbolKind::Func, def.extent->role}]++;
     }
 
     auto R = func_usr.try_emplace({u.first}, func_usr.size());
@@ -416,12 +414,12 @@ void DB::Update(const Lid2file_id &lid2file_id, int file_id,
     if (def.spell) {
       AssignFileId(lid2file_id, file_id, *def.spell);
       files[def.spell->file_id].symbol2refcnt[{
-          {def.spell->range, u.first, SymbolKind::Type, def.spell->role}}]++;
+          def.spell->range, u.first, SymbolKind::Type, def.spell->role}]++;
     }
     if (def.extent) {
       AssignFileId(lid2file_id, file_id, *def.extent);
       files[def.extent->file_id].outline2refcnt[{
-          {def.extent->range, u.first, SymbolKind::Type, def.extent->role}}]++;
+          def.extent->range, u.first, SymbolKind::Type, def.extent->role}]++;
     }
     auto R = type_usr.try_emplace({u.first}, type_usr.size());
     if (R.second)
@@ -442,12 +440,12 @@ void DB::Update(const Lid2file_id &lid2file_id, int file_id,
     if (def.spell) {
       AssignFileId(lid2file_id, file_id, *def.spell);
       files[def.spell->file_id].symbol2refcnt[{
-          {def.spell->range, u.first, SymbolKind::Var, def.spell->role}}]++;
+          def.spell->range, u.first, SymbolKind::Var, def.spell->role}]++;
     }
     if (def.extent) {
       AssignFileId(lid2file_id, file_id, *def.extent);
       files[def.extent->file_id].outline2refcnt[{
-          {def.extent->range, u.first, SymbolKind::Var, def.extent->role}}]++;
+          def.extent->range, u.first, SymbolKind::Var, def.extent->role}]++;
     }
     auto R = var_usr.try_emplace({u.first}, var_usr.size());
     if (R.second)

src/query.h

@@ -74,17 +74,17 @@ struct QueryFunc : QueryEntity<QueryFunc, FuncDef> {
   Usr usr;
   llvm::SmallVector<Def, 1> def;
   std::vector<DeclRef> declarations;
-  std::vector<Use> uses;
   std::vector<Usr> derived;
+  std::vector<Use> uses;
 };
 
 struct QueryType : QueryEntity<QueryType, TypeDef> {
   Usr usr;
   llvm::SmallVector<Def, 1> def;
   std::vector<DeclRef> declarations;
-  std::vector<Use> uses;
   std::vector<Usr> derived;
   std::vector<Usr> instances;
+  std::vector<Use> uses;
 };
 
 struct QueryVar : QueryEntity<QueryVar, VarDef> {

src/query_utils.cc

@@ -49,8 +49,7 @@ Maybe<Use> GetDefinitionSpell(DB *db, SymbolIdx sym) {
 Maybe<Use> GetDefinitionExtent(DB *db, SymbolIdx sym) {
   // Used to jump to file.
   if (sym.kind == SymbolKind::File)
-    return Use{{Range{{0, 0}, {0, 0}}, sym.usr, sym.kind, Role::None},
+    return Use{{Range{{0, 0}, {0, 0}}, Role::None}, int(sym.usr)};
-               int(sym.usr)};
   Maybe<Use> ret;
   EachEntityDef(db, sym, [&](const auto &def) { return !(ret = def.extent); });
   return ret;
@@ -204,40 +203,27 @@ lsDocumentUri GetLsDocumentUri(DB *db, int file_id) {
   }
 }
 
-std::optional<lsLocation> GetLsLocation(DB *db, WorkingFiles *working_files,
+std::optional<lsLocation> GetLsLocation(DB *db, WorkingFiles *wfiles,
                                         Use use) {
   std::string path;
   lsDocumentUri uri = GetLsDocumentUri(db, use.file_id, &path);
   std::optional<lsRange> range =
-      GetLsRange(working_files->GetFileByFilename(path), use.range);
+      GetLsRange(wfiles->GetFileByFilename(path), use.range);
   if (!range)
     return std::nullopt;
   return lsLocation{uri, *range};
 }
 
-std::optional<lsLocationEx> GetLsLocationEx(DB *db, WorkingFiles *working_files,
+std::optional<lsLocation> GetLsLocation(DB *db, WorkingFiles *wfiles,
-                                            Use use, bool container) {
+                                        SymbolRef sym, int file_id) {
-  std::optional<lsLocation> ls_loc = GetLsLocation(db, working_files, use);
+  return GetLsLocation(db, wfiles, Use{{sym.range, sym.role}, file_id});
-  if (!ls_loc)
-    return std::nullopt;
-  lsLocationEx ret;
-  ret.lsLocation::operator=(*ls_loc);
-  if (container) {
-    ret.role = uint16_t(use.role);
-    EachEntityDef(db, use, [&](const auto &def) {
-      ret.containerName = std::string_view(def.detailed_name);
-      return false;
-    });
-  }
-  return ret;
 }
 
-std::vector<lsLocationEx> GetLsLocationExs(DB *db, WorkingFiles *working_files,
+std::vector<lsLocation> GetLsLocations(DB *db, WorkingFiles *wfiles,
                                        const std::vector<Use> &uses) {
-  std::vector<lsLocationEx> ret;
+  std::vector<lsLocation> ret;
   for (Use use : uses)
-    if (auto loc =
+    if (auto loc = GetLsLocation(db, wfiles, use))
-            GetLsLocationEx(db, working_files, use, g_config->xref.container))
       ret.push_back(*loc);
   std::sort(ret.begin(), ret.end());
   ret.erase(std::unique(ret.begin(), ret.end()), ret.end());

src/query_utils.h

@@ -27,12 +27,11 @@ std::optional<lsRange> GetLsRange(WorkingFile *working_file,
 lsDocumentUri GetLsDocumentUri(DB *db, int file_id, std::string *path);
 lsDocumentUri GetLsDocumentUri(DB *db, int file_id);
 
-std::optional<lsLocation> GetLsLocation(DB *db, WorkingFiles *working_files,
+std::optional<lsLocation> GetLsLocation(DB *db, WorkingFiles *wfiles, Use use);
-                                        Use use);
+std::optional<lsLocation> GetLsLocation(DB *db, WorkingFiles *wfiles,
-std::optional<lsLocationEx> GetLsLocationEx(DB *db, WorkingFiles *working_files,
+                                        SymbolRef sym, int file_id);
-                                            Use use, bool container);
+std::vector<lsLocation> GetLsLocations(DB *db, WorkingFiles *wfiles,
-std::vector<lsLocationEx> GetLsLocationExs(DB *db, WorkingFiles *working_files,
+                                           const std::vector<Use> &uses);
-                                           const std::vector<Use> &refs);
 // Returns a symbol. The symbol will *NOT* have a location assigned.
 std::optional<lsSymbolInformation> GetSymbolInfo(DB *db, SymbolIdx sym,
                                                  bool detailed);

src/serializer.cc

@@ -243,45 +243,49 @@ template <typename Def> void ReflectShortName(Writer &visitor, Def &def) {
   }
 }
 
-template <typename TVisitor> void Reflect(TVisitor &visitor, IndexType &value) {
-  REFLECT_MEMBER_START();
-  REFLECT_MEMBER2("usr", value.usr);
-  REFLECT_MEMBER2("detailed_name", value.def.detailed_name);
-  REFLECT_MEMBER2("qual_name_offset", value.def.qual_name_offset);
-  ReflectShortName(visitor, value.def);
-  REFLECT_MEMBER2("kind", value.def.kind);
-  ReflectHoverAndComments(visitor, value.def);
-  REFLECT_MEMBER2("declarations", value.declarations);
-  REFLECT_MEMBER2("spell", value.def.spell);
-  REFLECT_MEMBER2("extent", value.def.extent);
-  REFLECT_MEMBER2("alias_of", value.def.alias_of);
-  REFLECT_MEMBER2("bases", value.def.bases);
-  REFLECT_MEMBER2("derived", value.derived);
-  REFLECT_MEMBER2("types", value.def.types);
-  REFLECT_MEMBER2("funcs", value.def.funcs);
-  REFLECT_MEMBER2("vars", value.def.vars);
-  REFLECT_MEMBER2("instances", value.instances);
-  REFLECT_MEMBER2("uses", value.uses);
-  REFLECT_MEMBER_END();
-}
-
 template <typename TVisitor> void Reflect(TVisitor &visitor, IndexFunc &value) {
   REFLECT_MEMBER_START();
   REFLECT_MEMBER2("usr", value.usr);
   REFLECT_MEMBER2("detailed_name", value.def.detailed_name);
   REFLECT_MEMBER2("qual_name_offset", value.def.qual_name_offset);
   ReflectShortName(visitor, value.def);
-  REFLECT_MEMBER2("kind", value.def.kind);
+  REFLECT_MEMBER2("spell", value.def.spell);
-  REFLECT_MEMBER2("storage", value.def.storage);
+  REFLECT_MEMBER2("extent", value.def.extent);
   ReflectHoverAndComments(visitor, value.def);
+  REFLECT_MEMBER2("bases", value.def.bases);
+  REFLECT_MEMBER2("vars", value.def.vars);
+  REFLECT_MEMBER2("callees", value.def.callees);
+  REFLECT_MEMBER2("kind", value.def.kind);
+  REFLECT_MEMBER2("parent_kind", value.def.parent_kind);
+  REFLECT_MEMBER2("storage", value.def.storage);
+
   REFLECT_MEMBER2("declarations", value.declarations);
+  REFLECT_MEMBER2("derived", value.derived);
+  REFLECT_MEMBER2("uses", value.uses);
+  REFLECT_MEMBER_END();
+}
+
+template <typename TVisitor> void Reflect(TVisitor &visitor, IndexType &value) {
+  REFLECT_MEMBER_START();
+  REFLECT_MEMBER2("usr", value.usr);
+  REFLECT_MEMBER2("detailed_name", value.def.detailed_name);
+  REFLECT_MEMBER2("qual_name_offset", value.def.qual_name_offset);
+  ReflectShortName(visitor, value.def);
+  ReflectHoverAndComments(visitor, value.def);
   REFLECT_MEMBER2("spell", value.def.spell);
   REFLECT_MEMBER2("extent", value.def.extent);
   REFLECT_MEMBER2("bases", value.def.bases);
-  REFLECT_MEMBER2("derived", value.derived);
+  REFLECT_MEMBER2("funcs", value.def.funcs);
+  REFLECT_MEMBER2("types", value.def.types);
   REFLECT_MEMBER2("vars", value.def.vars);
+  REFLECT_MEMBER2("alias_of", value.def.alias_of);
+  REFLECT_MEMBER2("kind", value.def.kind);
+  REFLECT_MEMBER2("parent_kind", value.def.parent_kind);
+
+  REFLECT_MEMBER2("declarations", value.declarations);
+  REFLECT_MEMBER2("derived", value.derived);
+  REFLECT_MEMBER2("instances", value.instances);
   REFLECT_MEMBER2("uses", value.uses);
-  REFLECT_MEMBER2("callees", value.def.callees);
   REFLECT_MEMBER_END();
 }
 
@@ -292,13 +296,15 @@ template <typename TVisitor> void Reflect(TVisitor &visitor, IndexVar &value) {
   REFLECT_MEMBER2("qual_name_offset", value.def.qual_name_offset);
   ReflectShortName(visitor, value.def);
   ReflectHoverAndComments(visitor, value.def);
-  REFLECT_MEMBER2("declarations", value.declarations);
   REFLECT_MEMBER2("spell", value.def.spell);
   REFLECT_MEMBER2("extent", value.def.extent);
   REFLECT_MEMBER2("type", value.def.type);
-  REFLECT_MEMBER2("uses", value.uses);
   REFLECT_MEMBER2("kind", value.def.kind);
+  REFLECT_MEMBER2("parent_kind", value.def.parent_kind);
   REFLECT_MEMBER2("storage", value.def.storage);
+
+  REFLECT_MEMBER2("declarations", value.declarations);
+  REFLECT_MEMBER2("uses", value.uses);
   REFLECT_MEMBER_END();
 }