diff --git a/src/clang_complete.cc b/src/clang_complete.cc
index 16db7bcf..bb645700 100644
--- a/src/clang_complete.cc
+++ b/src/clang_complete.cc
@@ -60,10 +60,9 @@ struct ProxyFileSystem : FileSystem {
 
 namespace ccls {
 
-lsTextEdit ToTextEdit(const clang::SourceManager &SM,
-                      const clang::LangOptions &L,
-                      const clang::FixItHint &FixIt) {
-  lsTextEdit edit;
+TextEdit ToTextEdit(const clang::SourceManager &SM, const clang::LangOptions &L,
+                    const clang::FixItHint &FixIt) {
+  TextEdit edit;
   edit.newText = FixIt.CodeToInsert;
   auto r = FromCharSourceRange(SM, L, FixIt.RemoveRange);
   edit.range =
@@ -211,7 +210,7 @@ public:
     Flush();
   }
   void HandleDiagnostic(DiagnosticsEngine::Level Level,
-                        const Diagnostic &Info) override {
+                        const clang::Diagnostic &Info) override {
     DiagnosticConsumer::HandleDiagnostic(Level, Info);
     SourceLocation L = Info.getLocation();
     if (!L.isValid()) return;
@@ -360,8 +359,8 @@ void *CompletionPreloadMain(void *manager_) {
     int debounce =
         is_open ? g_config->diagnostics.onOpen : g_config->diagnostics.onSave;
     if (debounce >= 0) {
-      lsTextDocumentIdentifier document;
-      document.uri = lsDocumentUri::FromPath(request.path);
+      TextDocumentIdentifier document;
+      document.uri = DocumentUri::FromPath(request.path);
       manager->DiagnosticsUpdate(request.path, debounce);
     }
   }
@@ -491,24 +490,24 @@ void *DiagnosticMain(void *manager_) {
     for (auto &Buf : Bufs)
       Buf.release();
 
-    auto Fill = [](const DiagBase &d, lsDiagnostic &ret) {
+    auto Fill = [](const DiagBase &d, Diagnostic &ret) {
       ret.range = lsRange{{d.range.start.line, d.range.start.column},
                           {d.range.end.line, d.range.end.column}};
       switch (d.level) {
       case DiagnosticsEngine::Ignored:
         // llvm_unreachable
       case DiagnosticsEngine::Remark:
-        ret.severity = lsDiagnosticSeverity::Hint;
+        ret.severity = DiagnosticSeverity::Hint;
         break;
       case DiagnosticsEngine::Note:
-        ret.severity = lsDiagnosticSeverity::Information;
+        ret.severity = DiagnosticSeverity::Information;
         break;
       case DiagnosticsEngine::Warning:
-        ret.severity = lsDiagnosticSeverity::Warning;
+        ret.severity = DiagnosticSeverity::Warning;
         break;
       case DiagnosticsEngine::Error:
       case DiagnosticsEngine::Fatal:
-        ret.severity = lsDiagnosticSeverity::Error;
+        ret.severity = DiagnosticSeverity::Error;
         break;
       }
       ret.code = d.category;
@@ -518,13 +517,13 @@ void *DiagnosticMain(void *manager_) {
     std::vector<Diag> diags = DC.Take();
     if (std::shared_ptr<PreambleData> preamble = session->GetPreamble())
       diags.insert(diags.end(), preamble->diags.begin(), preamble->diags.end());
-    std::vector<lsDiagnostic> ls_diags;
+    std::vector<Diagnostic> ls_diags;
     for (auto &d : diags) {
       if (!d.concerned)
         continue;
       std::string buf;
       llvm::raw_string_ostream OS(buf);
-      lsDiagnostic &ls_diag = ls_diags.emplace_back();
+      Diagnostic &ls_diag = ls_diags.emplace_back();
       Fill(d, ls_diag);
       ls_diag.fixits_ = d.edits;
       OS << d.message;
@@ -537,7 +536,7 @@ void *DiagnosticMain(void *manager_) {
       for (auto &n : d.notes) {
         if (!n.concerned)
           continue;
-        lsDiagnostic &ls_diag1 = ls_diags.emplace_back();
+        Diagnostic &ls_diag1 = ls_diags.emplace_back();
         Fill(n, ls_diag1);
         OS << n.message << "\n\n";
         printDiag(OS, d);
diff --git a/src/clang_complete.hh b/src/clang_complete.hh
index e1984e93..07f59f6d 100644
--- a/src/clang_complete.hh
+++ b/src/clang_complete.hh
@@ -33,10 +33,10 @@ struct DiagBase {
 struct Note : DiagBase {};
 struct Diag : DiagBase {
   std::vector<Note> notes;
-  std::vector<lsTextEdit> edits;
+  std::vector<TextEdit> edits;
 };
 
-lsTextEdit ToTextEdit(const clang::SourceManager &SM,
+TextEdit ToTextEdit(const clang::SourceManager &SM,
                       const clang::LangOptions &L,
                       const clang::FixItHint &FixIt);
 
@@ -63,18 +63,18 @@ struct CompletionSession
 
 struct CompletionManager {
   using OnDiagnostic = std::function<void(
-      std::string path, std::vector<lsDiagnostic> diagnostics)>;
+      std::string path, std::vector<Diagnostic> diagnostics)>;
   // If OptConsumer is nullptr, the request has been cancelled.
   using OnComplete =
       std::function<void(clang::CodeCompleteConsumer *OptConsumer)>;
-  using OnDropped = std::function<void(lsRequestId request_id)>;
+  using OnDropped = std::function<void(RequestId request_id)>;
 
   struct PreloadRequest {
     std::string path;
   };
   struct CompletionRequest {
-    CompletionRequest(const lsRequestId &id,
-                      const lsTextDocumentIdentifier &document,
+    CompletionRequest(const RequestId &id,
+                      const TextDocumentIdentifier &document,
                       const lsPosition &position,
                       std::unique_ptr<clang::CodeCompleteConsumer> Consumer,
                       clang::CodeCompleteOptions CCOpts,
@@ -83,8 +83,8 @@ struct CompletionManager {
           Consumer(std::move(Consumer)), CCOpts(CCOpts),
           on_complete(on_complete) {}
 
-    lsRequestId id;
-    lsTextDocumentIdentifier document;
+    RequestId id;
+    TextDocumentIdentifier document;
     lsPosition position;
     std::unique_ptr<clang::CodeCompleteConsumer> Consumer;
     clang::CodeCompleteOptions CCOpts;
diff --git a/src/hierarchy.hh b/src/hierarchy.hh
index 477d59a3..a3e6a4f5 100644
--- a/src/hierarchy.hh
+++ b/src/hierarchy.hh
@@ -10,10 +10,10 @@
 
 namespace ccls {
 template <typename Node>
-std::vector<lsLocation> FlattenHierarchy(const std::optional<Node> &root) {
+std::vector<Location> FlattenHierarchy(const std::optional<Node> &root) {
   if (!root)
     return {};
-  std::vector<lsLocation> ret;
+  std::vector<Location> ret;
   std::queue<const Node *> q;
   for (auto &entry : root->children)
     q.push(&entry);
diff --git a/src/include_complete.cc b/src/include_complete.cc
index 2703d296..b67bb6be 100644
--- a/src/include_complete.cc
+++ b/src/include_complete.cc
@@ -22,7 +22,7 @@ namespace {
 
 struct CompletionCandidate {
   std::string absolute_path;
-  lsCompletionItem completion_item;
+  CompletionItem completion_item;
 };
 
 std::string ElideLongPath(const std::string &path) {
@@ -74,15 +74,15 @@ bool TrimPath(Project *project, std::string &path) {
   return angle;
 }
 
-lsCompletionItem BuildCompletionItem(const std::string &path,
-                                     bool use_angle_brackets) {
-  lsCompletionItem item;
+CompletionItem BuildCompletionItem(const std::string &path,
+                                   bool use_angle_brackets) {
+  CompletionItem item;
   item.label = ElideLongPath(path);
   item.detail = path; // the include path, used in de-duplicating
   item.textEdit.newText = path;
-  item.insertTextFormat = lsInsertTextFormat::PlainText;
+  item.insertTextFormat = InsertTextFormat::PlainText;
   item.use_angle_brackets_ = use_angle_brackets;
-  item.kind = lsCompletionItemKind::File;
+  item.kind = CompletionItemKind::File;
   item.priority_ = 0;
   return item;
 }
@@ -124,7 +124,7 @@ void IncludeComplete::Rescan() {
 }
 
 void IncludeComplete::InsertCompletionItem(const std::string &absolute_path,
-                                           lsCompletionItem &&item) {
+                                           CompletionItem &&item) {
   if (inserted_paths.insert({item.detail, inserted_paths.size()}).second) {
     completion_items.push_back(item);
     // insert if not found or with shorter include path
@@ -135,7 +135,7 @@ void IncludeComplete::InsertCompletionItem(const std::string &absolute_path,
           completion_items.size() - 1;
     }
   } else {
-    lsCompletionItem &inserted_item =
+    CompletionItem &inserted_item =
         completion_items[inserted_paths[item.detail]];
     // Update |use_angle_brackets_|, prefer quotes.
     if (!item.use_angle_brackets_)
@@ -151,7 +151,7 @@ void IncludeComplete::AddFile(const std::string &path) {
 
   std::string trimmed_path = path;
   bool use_angle_brackets = TrimPath(project_, trimmed_path);
-  lsCompletionItem item = BuildCompletionItem(trimmed_path, use_angle_brackets);
+  CompletionItem item = BuildCompletionItem(trimmed_path, use_angle_brackets);
 
   std::unique_lock<std::mutex> lock(completion_items_mutex, std::defer_lock);
   if (is_scanning)
@@ -190,7 +190,7 @@ void IncludeComplete::InsertIncludesFromDirectory(std::string directory,
                          std::move(result.completion_item));
 }
 
-std::optional<lsCompletionItem>
+std::optional<CompletionItem>
 IncludeComplete::FindCompletionItemForAbsolutePath(
     const std::string &absolute_path) {
   std::lock_guard<std::mutex> lock(completion_items_mutex);
diff --git a/src/include_complete.hh b/src/include_complete.hh
index d82fc326..7e810c4f 100644
--- a/src/include_complete.hh
+++ b/src/include_complete.hh
@@ -26,18 +26,18 @@ struct IncludeComplete {
   void InsertIncludesFromDirectory(std::string directory,
                                    bool use_angle_brackets);
 
-  std::optional<ccls::lsCompletionItem>
+  std::optional<ccls::CompletionItem>
   FindCompletionItemForAbsolutePath(const std::string &absolute_path);
 
   // Insert item to |completion_items|.
   // Update |absolute_path_to_completion_item| and |inserted_paths|.
   void InsertCompletionItem(const std::string &absolute_path,
-                            ccls::lsCompletionItem &&item);
+                            ccls::CompletionItem &&item);
 
   // Guards |completion_items| when |is_scanning| is true.
   std::mutex completion_items_mutex;
   std::atomic<bool> is_scanning;
-  std::vector<ccls::lsCompletionItem> completion_items;
+  std::vector<ccls::CompletionItem> completion_items;
 
   // Absolute file path to the completion item in |completion_items|.
   // Keep the one with shortest include path.
diff --git a/src/indexer.cc b/src/indexer.cc
index 4dc02aeb..d78efc70 100644
--- a/src/indexer.cc
+++ b/src/indexer.cc
@@ -105,110 +105,110 @@ StringRef GetSourceInRange(const SourceManager &SM, const LangOptions &LangOpts,
                         BInfo.second);
 }
 
-SymbolKind GetSymbolKind(const Decl *D, lsSymbolKind &kind) {
+Kind GetKind(const Decl *D, SymbolKind &kind) {
   switch (D->getKind()) {
   case Decl::LinkageSpec:
-    return SymbolKind::Invalid;
+    return Kind::Invalid;
   case Decl::Namespace:
-    kind = lsSymbolKind::Namespace;
-    return SymbolKind::Type;
+    kind = SymbolKind::Namespace;
+    return Kind::Type;
   case Decl::NamespaceAlias:
-    kind = lsSymbolKind::TypeAlias;
-    return SymbolKind::Type;
+    kind = SymbolKind::TypeAlias;
+    return Kind::Type;
   case Decl::ObjCCategory:
   case Decl::ObjCImplementation:
   case Decl::ObjCInterface:
   case Decl::ObjCProtocol:
-    kind = lsSymbolKind::Interface;
-    return SymbolKind::Type;
+    kind = SymbolKind::Interface;
+    return Kind::Type;
   case Decl::ObjCMethod:
-    kind = lsSymbolKind::Method;
-    return SymbolKind::Func;
+    kind = SymbolKind::Method;
+    return Kind::Func;
   case Decl::ObjCProperty:
-    kind = lsSymbolKind::Property;
-    return SymbolKind::Type;
+    kind = SymbolKind::Property;
+    return Kind::Type;
   case Decl::ClassTemplate:
-    kind = lsSymbolKind::Class;
-    return SymbolKind::Type;
+    kind = SymbolKind::Class;
+    return Kind::Type;
   case Decl::FunctionTemplate:
-    kind = lsSymbolKind::Function;
-    return SymbolKind::Func;
+    kind = SymbolKind::Function;
+    return Kind::Func;
   case Decl::TypeAliasTemplate:
-    kind = lsSymbolKind::TypeAlias;
-    return SymbolKind::Type;
+    kind = SymbolKind::TypeAlias;
+    return Kind::Type;
   case Decl::VarTemplate:
-    kind = lsSymbolKind::Variable;
-    return SymbolKind::Var;
+    kind = SymbolKind::Variable;
+    return Kind::Var;
   case Decl::TemplateTemplateParm:
-    kind = lsSymbolKind::TypeParameter;
-    return SymbolKind::Type;
+    kind = SymbolKind::TypeParameter;
+    return Kind::Type;
   case Decl::Enum:
-    kind = lsSymbolKind::Enum;
-    return SymbolKind::Type;
+    kind = SymbolKind::Enum;
+    return Kind::Type;
   case Decl::CXXRecord:
   case Decl::Record:
-    kind = lsSymbolKind::Class;
+    kind = SymbolKind::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;
+        kind = SymbolKind::Struct;
+    return Kind::Type;
   case Decl::ClassTemplateSpecialization:
   case Decl::ClassTemplatePartialSpecialization:
-    kind = lsSymbolKind::Class;
-    return SymbolKind::Type;
+    kind = SymbolKind::Class;
+    return Kind::Type;
   case Decl::TypeAlias:
   case Decl::Typedef:
   case Decl::UnresolvedUsingTypename:
-    kind = lsSymbolKind::TypeAlias;
-    return SymbolKind::Type;
+    kind = SymbolKind::TypeAlias;
+    return Kind::Type;
   case Decl::Binding:
-    kind = lsSymbolKind::Variable;
-    return SymbolKind::Var;
+    kind = SymbolKind::Variable;
+    return Kind::Var;
   case Decl::Field:
   case Decl::ObjCIvar:
-    kind = lsSymbolKind::Field;
-    return SymbolKind::Var;
+    kind = SymbolKind::Field;
+    return Kind::Var;
   case Decl::Function:
-    kind = lsSymbolKind::Function;
-    return SymbolKind::Func;
+    kind = SymbolKind::Function;
+    return Kind::Func;
   case Decl::CXXMethod: {
     const auto *MD = cast<CXXMethodDecl>(D);
-    kind = MD->isStatic() ? lsSymbolKind::StaticMethod : lsSymbolKind::Method;
-    return SymbolKind::Func;
+    kind = MD->isStatic() ? SymbolKind::StaticMethod : SymbolKind::Method;
+    return Kind::Func;
   }
   case Decl::CXXConstructor:
-    kind = lsSymbolKind::Constructor;
-    return SymbolKind::Func;
+    kind = SymbolKind::Constructor;
+    return Kind::Func;
   case Decl::CXXConversion:
   case Decl::CXXDestructor:
-    kind = lsSymbolKind::Method;
-    return SymbolKind::Func;
+    kind = SymbolKind::Method;
+    return Kind::Func;
   case Decl::Var:
   case Decl::Decomposition:
-    kind = lsSymbolKind::Variable;
-    return SymbolKind::Var;
+    kind = SymbolKind::Variable;
+    return Kind::Var;
   case Decl::ImplicitParam:
   case Decl::ParmVar:
     // ccls extension
-    kind = lsSymbolKind::Parameter;
-    return SymbolKind::Var;
+    kind = SymbolKind::Parameter;
+    return Kind::Var;
   case Decl::VarTemplateSpecialization:
   case Decl::VarTemplatePartialSpecialization:
-    kind = lsSymbolKind::Variable;
-    return SymbolKind::Var;
+    kind = SymbolKind::Variable;
+    return Kind::Var;
   case Decl::EnumConstant:
-    kind = lsSymbolKind::EnumMember;
-    return SymbolKind::Var;
+    kind = SymbolKind::EnumMember;
+    return Kind::Var;
   case Decl::UnresolvedUsingValue:
-    kind = lsSymbolKind::Variable;
-    return SymbolKind::Var;
+    kind = SymbolKind::Variable;
+    return Kind::Var;
   case Decl::TranslationUnit:
-    return SymbolKind::Invalid;
+    return Kind::Invalid;
 
   default:
     LOG_S(INFO) << "unhandled " << int(D->getKind());
-    return SymbolKind::Invalid;
+    return Kind::Invalid;
   }
 }
 
@@ -605,7 +605,7 @@ public:
     return it->second.first;
   }
 
-  void AddMacroUse(IndexFile *db, SourceManager &SM, Usr usr, SymbolKind kind,
+  void AddMacroUse(IndexFile *db, SourceManager &SM, Usr usr, Kind kind,
                    SourceLocation Spell) const {
     const FileEntry *FE = SM.getFileEntryForID(SM.getFileID(Spell));
     if (!FE)
@@ -617,13 +617,13 @@ public:
         FromTokenRange(SM, Ctx->getLangOpts(), SourceRange(Spell, Spell));
     Use use{{spell, Role::Dynamic}, lid};
     switch (kind) {
-    case SymbolKind::Func:
+    case Kind::Func:
       db->ToFunc(usr).uses.push_back(use);
       break;
-    case SymbolKind::Type:
+    case Kind::Type:
       db->ToType(usr).uses.push_back(use);
       break;
-    case SymbolKind::Var:
+    case Kind::Var:
       db->ToVar(usr).uses.push_back(use);
       break;
     default:
@@ -738,8 +738,8 @@ public:
     IndexFunc *func = nullptr;
     IndexType *type = nullptr;
     IndexVar *var = nullptr;
-    lsSymbolKind ls_kind;
-    SymbolKind kind = GetSymbolKind(D, ls_kind);
+    SymbolKind ls_kind;
+    Kind kind = GetKind(D, ls_kind);
 
     if (is_def)
       switch (D->getKind()) {
@@ -773,8 +773,8 @@ public:
         SourceRange R = OrigD->getSourceRange();
         entity->def.spell = {use,
                              FromTokenRangeDefaulted(SM, Lang, R, FE, loc)};
-        entity->def.parent_kind = lsSymbolKind::File;
-        GetSymbolKind(cast<Decl>(SemDC), entity->def.parent_kind);
+        entity->def.parent_kind = SymbolKind::File;
+        GetKind(cast<Decl>(SemDC), entity->def.parent_kind);
       } else if (is_decl) {
         SourceRange R = OrigD->getSourceRange();
         entity->declarations.push_back(
@@ -787,13 +787,13 @@ public:
         entity->def.comments = Intern(GetComment(OrigD));
     };
     switch (kind) {
-    case SymbolKind::Invalid:
+    case Kind::Invalid:
       LOG_S(INFO) << "Unhandled " << int(D->getKind()) << " " << info->qualified
                   << " in " << db->path << ":" << loc.start.line + 1;
       return true;
-    case SymbolKind::File:
+    case Kind::File:
       return true;
-    case SymbolKind::Func:
+    case Kind::Func:
       func = &db->ToFunc(usr);
       func->def.kind = ls_kind;
       // Mark as Role::Implicit to span one more column to the left/right.
@@ -803,40 +803,40 @@ public:
         role = Role(role | Role::Implicit);
       do_def_decl(func);
       if (Spell != Loc)
-        AddMacroUse(db, SM, usr, SymbolKind::Func, Spell);
+        AddMacroUse(db, SM, usr, Kind::Func, Spell);
       if (func->def.detailed_name[0] == '\0')
         SetName(D, info->short_name, info->qualified, func->def);
       if (is_def || is_decl) {
         const Decl *DC = cast<Decl>(SemDC);
-        if (GetSymbolKind(DC, ls_kind) == SymbolKind::Type)
+        if (GetKind(DC, ls_kind) == Kind::Type)
           db->ToType(GetUsr(DC)).def.funcs.push_back(usr);
       } else {
         const Decl *DC = cast<Decl>(LexDC);
-        if (GetSymbolKind(DC, ls_kind) == SymbolKind::Func)
+        if (GetKind(DC, ls_kind) == Kind::Func)
           db->ToFunc(GetUsr(DC))
-              .def.callees.push_back({loc, usr, SymbolKind::Func, role});
+              .def.callees.push_back({loc, usr, Kind::Func, role});
       }
       break;
-    case SymbolKind::Type:
+    case Kind::Type:
       type = &db->ToType(usr);
       type->def.kind = ls_kind;
       do_def_decl(type);
       if (Spell != Loc)
-        AddMacroUse(db, SM, usr, SymbolKind::Type, Spell);
+        AddMacroUse(db, SM, usr, Kind::Type, Spell);
       if (type->def.detailed_name[0] == '\0' && info->short_name.size())
         SetName(D, info->short_name, info->qualified, type->def);
       if (is_def || is_decl) {
         const Decl *DC = cast<Decl>(SemDC);
-        if (GetSymbolKind(DC, ls_kind) == SymbolKind::Type)
+        if (GetKind(DC, ls_kind) == Kind::Type)
           db->ToType(GetUsr(DC)).def.types.push_back(usr);
       }
       break;
-    case SymbolKind::Var:
+    case Kind::Var:
       var = &db->ToVar(usr);
       var->def.kind = ls_kind;
       do_def_decl(var);
       if (Spell != Loc)
-        AddMacroUse(db, SM, usr, SymbolKind::Var, Spell);
+        AddMacroUse(db, SM, usr, Kind::Var, Spell);
       if (var->def.detailed_name[0] == '\0')
         SetVarName(D, info->short_name, info->qualified, var->def);
       QualType T;
@@ -844,10 +844,10 @@ public:
         T = VD->getType();
       if (is_def || is_decl) {
         const Decl *DC = cast<Decl>(SemDC);
-        SymbolKind kind = GetSymbolKind(DC, var->def.parent_kind);
-        if (kind == SymbolKind::Func)
+        Kind kind = GetKind(DC, var->def.parent_kind);
+        if (kind == Kind::Func)
           db->ToFunc(GetUsr(DC)).def.vars.push_back(usr);
-        else if (kind == SymbolKind::Type && !isa<RecordDecl>(SemDC))
+        else if (kind == Kind::Type && !isa<RecordDecl>(SemDC))
           db->ToType(GetUsr(DC)).def.vars.emplace_back(usr, -1);
         if (!T.isNull()) {
           if (auto *BT = T->getAs<BuiltinType>()) {
@@ -871,8 +871,8 @@ public:
                     FromTokenRange(SM, Lang, R1)};
                 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;
+                type1.def.kind = SymbolKind::TypeParameter;
+                type1.def.parent_kind = SymbolKind::Class;
                 var->def.type = usr1;
                 type1.instances.push_back(usr);
                 break;
@@ -893,7 +893,7 @@ public:
           var->def.spell = {
               Use{{FromTokenRange(SM, Lang, {L, L}), Role::Definition}, lid},
               FromTokenRange(SM, Lang, D->getSourceRange())};
-          var->def.parent_kind = lsSymbolKind::Method;
+          var->def.parent_kind = SymbolKind::Method;
         }
       }
       break;
@@ -962,7 +962,7 @@ public:
       break;
     case Decl::ClassTemplateSpecialization:
     case Decl::ClassTemplatePartialSpecialization:
-      type->def.kind = lsSymbolKind::Class;
+      type->def.kind = SymbolKind::Class;
       if (is_def) {
         if (auto *ORD = dyn_cast<RecordDecl>(OrigD))
           CollectRecordMembers(*type, ORD);
@@ -1090,8 +1090,8 @@ public:
       auto [Name, usr] = GetMacro(Tok);
       IndexVar &var = db->ToVar(usr);
       Range range = FromTokenRange(SM, Lang, {L, L}, &UniqueID);
-      var.def.kind = lsSymbolKind::Macro;
-      var.def.parent_kind = lsSymbolKind::File;
+      var.def.kind = SymbolKind::Macro;
+      var.def.parent_kind = SymbolKind::File;
       if (var.def.spell)
         var.declarations.push_back(*var.def.spell);
       const MacroInfo *MI = MD->getMacroInfo();
@@ -1344,7 +1344,7 @@ void Reflect(Reader &vis, SymbolRef &v) {
     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.kind = static_cast<Kind>(strtol(s + 1, &s, 10));
     v.role = static_cast<Role>(strtol(s + 1, &s, 10));
   } else {
     Reflect(vis, v.range);
diff --git a/src/indexer.hh b/src/indexer.hh
index e60ce661..26e97341 100644
--- a/src/indexer.hh
+++ b/src/indexer.hh
@@ -35,7 +35,7 @@ enum class LanguageId;
 
 struct SymbolIdx {
   Usr usr;
-  SymbolKind kind;
+  Kind kind;
 
   bool operator==(const SymbolIdx &o) const {
     return usr == o.usr && kind == o.kind;
@@ -50,10 +50,10 @@ MAKE_REFLECT_STRUCT(SymbolIdx, usr, kind);
 struct SymbolRef {
   Range range;
   Usr usr;
-  SymbolKind kind;
+  Kind kind;
   Role role;
   operator SymbolIdx() const { return {usr, kind}; }
-  std::tuple<Range, Usr, SymbolKind, Role> ToTuple() const {
+  std::tuple<Range, Usr, Kind, Role> ToTuple() const {
     return std::make_tuple(range, usr, kind, role);
   }
   bool operator==(const SymbolRef &o) const { return ToTuple() == o.ToTuple(); }
@@ -62,7 +62,7 @@ struct SymbolRef {
 
 struct ExtentRef : SymbolRef {
   Range extent;
-  std::tuple<Range, Usr, SymbolKind, Role, Range> ToTuple() const {
+  std::tuple<Range, Usr, Kind, Role, Range> ToTuple() const {
     return std::make_tuple(range, usr, kind, role, extent);
   }
   bool operator==(const ExtentRef &o) const { return ToTuple() == o.ToTuple(); }
@@ -133,8 +133,8 @@ struct FuncDef : NameMixin<FuncDef> {
   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;
+  SymbolKind kind = SymbolKind::Unknown;
+  SymbolKind parent_kind = SymbolKind::Unknown;
   uint8_t storage = clang::SC_None;
 
   std::vector<Usr> GetBases() const { return bases; }
@@ -171,8 +171,8 @@ struct TypeDef : NameMixin<TypeDef> {
   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;
+  SymbolKind kind = SymbolKind::Unknown;
+  SymbolKind parent_kind = SymbolKind::Unknown;
 
   std::vector<Usr> GetBases() const { return bases; }
 };
@@ -203,18 +203,18 @@ struct VarDef : NameMixin<VarDef> {
   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;
+  SymbolKind kind = SymbolKind::Unknown;
+  SymbolKind parent_kind = SymbolKind::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 &&
-           (parent_kind == lsSymbolKind::Function ||
-            parent_kind == lsSymbolKind::Method ||
-            parent_kind == lsSymbolKind::StaticMethod ||
-            parent_kind == lsSymbolKind::Constructor) &&
+           (parent_kind == SymbolKind::Function ||
+            parent_kind == SymbolKind::Method ||
+            parent_kind == SymbolKind::StaticMethod ||
+            parent_kind == SymbolKind::Constructor) &&
            storage == clang::SC_None;
   }
 
diff --git a/src/lsp.cc b/src/lsp.cc
index 324faf43..62e4e702 100644
--- a/src/lsp.cc
+++ b/src/lsp.cc
@@ -10,55 +10,48 @@
 #include <stdio.h>
 
 namespace ccls {
-void Reflect(Reader &visitor, lsRequestId &value) {
+void Reflect(Reader &visitor, RequestId &value) {
   if (visitor.IsInt64()) {
-    value.type = lsRequestId::kInt;
+    value.type = RequestId::kInt;
     value.value = int(visitor.GetInt64());
   } else if (visitor.IsInt()) {
-    value.type = lsRequestId::kInt;
+    value.type = RequestId::kInt;
     value.value = visitor.GetInt();
   } else if (visitor.IsString()) {
-    value.type = lsRequestId::kString;
+    value.type = RequestId::kString;
     value.value = atoll(visitor.GetString());
   } else {
-    value.type = lsRequestId::kNone;
+    value.type = RequestId::kNone;
     value.value = -1;
   }
 }
 
-void Reflect(Writer &visitor, lsRequestId &value) {
+void Reflect(Writer &visitor, RequestId &value) {
   switch (value.type) {
-  case lsRequestId::kNone:
+  case RequestId::kNone:
     visitor.Null();
     break;
-  case lsRequestId::kInt:
+  case RequestId::kInt:
     visitor.Int(value.value);
     break;
-  case lsRequestId::kString:
+  case RequestId::kString:
     auto s = std::to_string(value.value);
     visitor.String(s.c_str(), s.length());
     break;
   }
 }
 
-lsTextDocumentIdentifier
-lsVersionedTextDocumentIdentifier::AsTextDocumentIdentifier() const {
-  lsTextDocumentIdentifier result;
-  result.uri = uri;
-  return result;
-}
-
-lsDocumentUri lsDocumentUri::FromPath(const std::string &path) {
-  lsDocumentUri result;
+DocumentUri DocumentUri::FromPath(const std::string &path) {
+  DocumentUri result;
   result.SetPath(path);
   return result;
 }
 
-bool lsDocumentUri::operator==(const lsDocumentUri &other) const {
+bool DocumentUri::operator==(const DocumentUri &other) const {
   return raw_uri == other.raw_uri;
 }
 
-void lsDocumentUri::SetPath(const std::string &path) {
+void DocumentUri::SetPath(const std::string &path) {
   // file:///c%3A/Users/jacob/Desktop/superindex/indexer/full_tests
   raw_uri = path;
 
@@ -99,7 +92,7 @@ void lsDocumentUri::SetPath(const std::string &path) {
   raw_uri = std::move(t);
 }
 
-std::string lsDocumentUri::GetPath() const {
+std::string DocumentUri::GetPath() const {
   if (raw_uri.compare(0, 7, "file://")) {
     LOG_S(WARNING)
         << "Received potentially bad URI (not starting with file://): "
@@ -136,7 +129,7 @@ std::string lsPosition::ToString() const {
   return std::to_string(line) + ":" + std::to_string(character);
 }
 
-bool lsTextEdit::operator==(const lsTextEdit &that) {
+bool TextEdit::operator==(const TextEdit &that) {
   return range == that.range && newText == that.newText;
 }
 } // namespace ccls
diff --git a/src/lsp.hh b/src/lsp.hh
index ae1e494a..cc8221dc 100644
--- a/src/lsp.hh
+++ b/src/lsp.hh
@@ -13,7 +13,7 @@
 #include <unordered_map>
 
 namespace ccls {
-struct lsRequestId {
+struct RequestId {
   // The client can send the request id as an int or a string. We should output
   // the same format we received.
   enum Type { kNone, kInt, kString };
@@ -23,17 +23,17 @@ struct lsRequestId {
 
   bool Valid() const { return type != kNone; }
 };
-void Reflect(Reader &visitor, lsRequestId &value);
-void Reflect(Writer &visitor, lsRequestId &value);
+void Reflect(Reader &visitor, RequestId &value);
+void Reflect(Writer &visitor, RequestId &value);
 
 struct InMessage {
-  lsRequestId id;
+  RequestId id;
   std::string method;
   std::unique_ptr<char[]> message;
   std::unique_ptr<rapidjson::Document> document;
 };
 
-enum class lsErrorCodes {
+enum class ErrorCode {
   // Defined by JSON RPC
   ParseError = -32700,
   InvalidRequest = -32600,
@@ -48,11 +48,11 @@ enum class lsErrorCodes {
   // Defined by the protocol.
   RequestCancelled = -32800,
 };
-MAKE_REFLECT_TYPE_PROXY(lsErrorCodes);
+MAKE_REFLECT_TYPE_PROXY(ErrorCode);
 
-struct lsResponseError {
+struct ResponseError {
   // A number indicating the error type that occurred.
-  lsErrorCodes code;
+  ErrorCode code;
 
   // A string providing a short description of the error.
   std::string message;
@@ -61,7 +61,7 @@ struct lsResponseError {
   // information about the error. Can be omitted.
   // std::optional<D> data;
 };
-MAKE_REFLECT_STRUCT(lsResponseError, code, message);
+MAKE_REFLECT_STRUCT(ResponseError, code, message);
 
 constexpr char ccls_xref[] = "ccls.xref";
 constexpr char window_showMessage[] = "window/showMessage";
@@ -74,10 +74,10 @@ constexpr char window_showMessage[] = "window/showMessage";
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////
 
-struct lsDocumentUri {
-  static lsDocumentUri FromPath(const std::string &path);
+struct DocumentUri {
+  static DocumentUri FromPath(const std::string &path);
 
-  bool operator==(const lsDocumentUri &other) const;
+  bool operator==(const DocumentUri &other) const;
 
   void SetPath(const std::string &path);
   std::string GetPath() const;
@@ -86,7 +86,7 @@ struct lsDocumentUri {
 };
 
 template <typename TVisitor>
-void Reflect(TVisitor &visitor, lsDocumentUri &value) {
+void Reflect(TVisitor &visitor, DocumentUri &value) {
   Reflect(visitor, value.raw_uri);
 }
 
@@ -115,20 +115,20 @@ struct lsRange {
 };
 MAKE_REFLECT_STRUCT(lsRange, start, end);
 
-struct lsLocation {
-  lsDocumentUri uri;
+struct Location {
+  DocumentUri uri;
   lsRange range;
-  bool operator==(const lsLocation &o) const {
+  bool operator==(const Location &o) const {
     return uri == o.uri && range == o.range;
   }
-  bool operator<(const lsLocation &o) const {
+  bool operator<(const Location &o) const {
     return !(uri.raw_uri == o.uri.raw_uri) ? uri.raw_uri < o.uri.raw_uri
                                            : range < o.range;
   }
 };
-MAKE_REFLECT_STRUCT(lsLocation, uri, range);
+MAKE_REFLECT_STRUCT(Location, uri, range);
 
-enum class lsSymbolKind : uint8_t {
+enum class SymbolKind : uint8_t {
   Unknown = 0,
 
   File = 1,
@@ -169,30 +169,28 @@ enum class lsSymbolKind : uint8_t {
   StaticMethod = 254,
   Macro = 255,
 };
-MAKE_REFLECT_TYPE_PROXY(lsSymbolKind);
+MAKE_REFLECT_TYPE_PROXY(SymbolKind);
 
-struct lsSymbolInformation {
+struct SymbolInformation {
   std::string_view name;
-  lsSymbolKind kind;
-  lsLocation location;
+  SymbolKind kind;
+  Location location;
   std::optional<std::string_view> containerName;
 };
 
-struct lsTextDocumentIdentifier {
-  lsDocumentUri uri;
+struct TextDocumentIdentifier {
+  DocumentUri uri;
 };
-MAKE_REFLECT_STRUCT(lsTextDocumentIdentifier, uri);
+MAKE_REFLECT_STRUCT(TextDocumentIdentifier, uri);
 
-struct lsVersionedTextDocumentIdentifier {
-  lsDocumentUri uri;
+struct VersionedTextDocumentIdentifier {
+  DocumentUri uri;
   // The version number of this document.  number | null
   std::optional<int> version;
-
-  lsTextDocumentIdentifier AsTextDocumentIdentifier() const;
 };
-MAKE_REFLECT_STRUCT(lsVersionedTextDocumentIdentifier, uri, version);
+MAKE_REFLECT_STRUCT(VersionedTextDocumentIdentifier, uri, version);
 
-struct lsTextEdit {
+struct TextEdit {
   // The range of the text document to be manipulated. To insert
   // text into a document create a range where start === end.
   lsRange range;
@@ -201,13 +199,13 @@ struct lsTextEdit {
   // empty string.
   std::string newText;
 
-  bool operator==(const lsTextEdit &that);
+  bool operator==(const TextEdit &that);
 };
-MAKE_REFLECT_STRUCT(lsTextEdit, range, newText);
+MAKE_REFLECT_STRUCT(TextEdit, range, newText);
 
-struct lsTextDocumentItem {
+struct TextDocumentItem {
   // The text document's URI.
-  lsDocumentUri uri;
+  DocumentUri uri;
 
   // The text document's language identifier.
   std::string languageId;
@@ -219,28 +217,21 @@ struct lsTextDocumentItem {
   // The content of the opened text document.
   std::string text;
 };
-MAKE_REFLECT_STRUCT(lsTextDocumentItem, uri, languageId, version, text);
+MAKE_REFLECT_STRUCT(TextDocumentItem, uri, languageId, version, text);
 
-struct lsTextDocumentEdit {
+struct TextDocumentEdit {
   // The text document to change.
-  lsVersionedTextDocumentIdentifier textDocument;
+  VersionedTextDocumentIdentifier textDocument;
 
   // The edits to be applied.
-  std::vector<lsTextEdit> edits;
+  std::vector<TextEdit> edits;
 };
-MAKE_REFLECT_STRUCT(lsTextDocumentEdit, textDocument, edits);
+MAKE_REFLECT_STRUCT(TextDocumentEdit, textDocument, edits);
 
-struct lsWorkspaceEdit {
-  // Holds changes to existing resources.
-  // changes ? : { [uri:string]: TextEdit[]; };
-  // std::unordered_map<lsDocumentUri, std::vector<lsTextEdit>> changes;
-
-  // An array of `TextDocumentEdit`s to express changes to specific a specific
-  // version of a text document. Whether a client supports versioned document
-  // edits is expressed via `WorkspaceClientCapabilites.versionedWorkspaceEdit`.
-  std::vector<lsTextDocumentEdit> documentChanges;
+struct WorkspaceEdit {
+  std::vector<TextDocumentEdit> documentChanges;
 };
-MAKE_REFLECT_STRUCT(lsWorkspaceEdit, documentChanges);
+MAKE_REFLECT_STRUCT(WorkspaceEdit, documentChanges);
 
 struct TextDocumentContentChangeEvent {
   // The range of the document that changed.
@@ -252,12 +243,12 @@ struct TextDocumentContentChangeEvent {
 };
 
 struct TextDocumentDidChangeParam {
-  lsVersionedTextDocumentIdentifier textDocument;
+  VersionedTextDocumentIdentifier textDocument;
   std::vector<TextDocumentContentChangeEvent> contentChanges;
 };
 
 struct WorkspaceFolder {
-  lsDocumentUri uri;
+  DocumentUri uri;
   std::string name;
 };
 MAKE_REFLECT_STRUCT(WorkspaceFolder, uri, name);
@@ -266,7 +257,7 @@ MAKE_REFLECT_STRUCT(WorkspaceFolder, uri, name);
 enum class MessageType : int { Error = 1, Warning = 2, Info = 3, Log = 4 };
 MAKE_REFLECT_TYPE_PROXY(MessageType)
 
-enum class lsDiagnosticSeverity {
+enum class DiagnosticSeverity {
   // Reports an error.
   Error = 1,
   // Reports a warning.
@@ -276,15 +267,15 @@ enum class lsDiagnosticSeverity {
   // Reports a hint.
   Hint = 4
 };
-MAKE_REFLECT_TYPE_PROXY(lsDiagnosticSeverity);
+MAKE_REFLECT_TYPE_PROXY(DiagnosticSeverity);
 
-struct lsDiagnostic {
+struct Diagnostic {
   // The range at which the message applies.
   lsRange range;
 
   // The diagnostic's severity. Can be omitted. If omitted it is up to the
   // client to interpret diagnostics as error, warning, info or hint.
-  std::optional<lsDiagnosticSeverity> severity;
+  std::optional<DiagnosticSeverity> severity;
 
   // The diagnostic's code. Can be omitted.
   int code = 0;
@@ -297,24 +288,15 @@ struct lsDiagnostic {
   std::string message;
 
   // Non-serialized set of fixits.
-  std::vector<lsTextEdit> fixits_;
+  std::vector<TextEdit> fixits_;
 };
-MAKE_REFLECT_STRUCT(lsDiagnostic, range, severity, source, message);
+MAKE_REFLECT_STRUCT(Diagnostic, range, severity, source, message);
 
-struct lsPublishDiagnosticsParams {
-  // The URI for which diagnostic information is reported.
-  lsDocumentUri uri;
-
-  // An array of diagnostic information items.
-  std::vector<lsDiagnostic> diagnostics;
-};
-MAKE_REFLECT_STRUCT(lsPublishDiagnosticsParams, uri, diagnostics);
-
-struct lsShowMessageParams {
+struct ShowMessageParam {
   MessageType type = MessageType::Error;
   std::string message;
 };
-MAKE_REFLECT_STRUCT(lsShowMessageParams, type, message);
+MAKE_REFLECT_STRUCT(ShowMessageParam, type, message);
 
 // Used to identify the language at a file level. The ordering is important, as
 // a file previously identified as `C`, will be changed to `Cpp` if it
@@ -324,8 +306,8 @@ MAKE_REFLECT_TYPE_PROXY(LanguageId);
 
 // The order matters. In FindSymbolsAtLocation, we want Var/Func ordered in
 // front of others.
-enum class SymbolKind : uint8_t { Invalid, File, Type, Func, Var };
-MAKE_REFLECT_TYPE_PROXY(SymbolKind);
+enum class Kind : uint8_t { Invalid, File, Type, Func, Var };
+MAKE_REFLECT_TYPE_PROXY(Kind);
 
 enum class Role : uint16_t {
   None = 0,
diff --git a/src/match.cc b/src/match.cc
index 9d3221a6..d7bbf9ad 100644
--- a/src/match.cc
+++ b/src/match.cc
@@ -18,7 +18,7 @@ std::optional<Matcher> Matcher::Create(const std::string &search) {
     );
     return m;
   } catch (const std::exception &e) {
-    lsShowMessageParams params;
+    ShowMessageParam params;
     params.type = MessageType::Error;
     params.message =
         "failed to parse EMCAScript regex " + search + " : " + e.what();
diff --git a/src/message_handler.cc b/src/message_handler.cc
index e485f282..152b78d2 100644
--- a/src/message_handler.cc
+++ b/src/message_handler.cc
@@ -31,9 +31,9 @@ MAKE_REFLECT_STRUCT(CodeActionParam::Context, diagnostics);
 MAKE_REFLECT_STRUCT(CodeActionParam, textDocument, range, context);
 
 // completion
-MAKE_REFLECT_TYPE_PROXY(lsCompletionTriggerKind);
-MAKE_REFLECT_STRUCT(lsCompletionContext, triggerKind, triggerCharacter);
-MAKE_REFLECT_STRUCT(lsCompletionParams, textDocument, position, context);
+MAKE_REFLECT_TYPE_PROXY(CompletionTriggerKind);
+MAKE_REFLECT_STRUCT(CompletionContext, triggerKind, triggerCharacter);
+MAKE_REFLECT_STRUCT(CompletionParam, textDocument, position, context);
 
 // formatting
 MAKE_REFLECT_STRUCT(FormattingOptions, tabSize, insertSpaces);
@@ -53,8 +53,8 @@ MAKE_REFLECT_STRUCT(WorkspaceSymbolParam, query, folders);
 namespace {
 struct CclsSemanticHighlightSymbol {
   int id = 0;
-  lsSymbolKind parentKind;
-  lsSymbolKind kind;
+  SymbolKind parentKind;
+  SymbolKind kind;
   uint8_t storage;
   std::vector<std::pair<int, int>> ranges;
 
@@ -63,7 +63,7 @@ struct CclsSemanticHighlightSymbol {
 };
 
 struct CclsSemanticHighlightParams {
-  lsDocumentUri uri;
+  DocumentUri uri;
   std::vector<CclsSemanticHighlightSymbol> symbols;
 };
 MAKE_REFLECT_STRUCT(CclsSemanticHighlightSymbol, id, parentKind, kind, storage,
@@ -71,7 +71,7 @@ MAKE_REFLECT_STRUCT(CclsSemanticHighlightSymbol, id, parentKind, kind, storage,
 MAKE_REFLECT_STRUCT(CclsSemanticHighlightParams, uri, symbols);
 
 struct CclsSetSkippedRangesParams {
-  lsDocumentUri uri;
+  DocumentUri uri;
   std::vector<lsRange> skippedRanges;
 };
 MAKE_REFLECT_STRUCT(CclsSetSkippedRangesParams, uri, skippedRanges);
@@ -194,19 +194,19 @@ void MessageHandler::Run(InMessage &msg) {
       try {
         it->second(reader, reply);
       } catch (std::invalid_argument &ex) {
-        lsResponseError err;
-        err.code = lsErrorCodes::InvalidParams;
+        ResponseError err;
+        err.code = ErrorCode::InvalidParams;
         err.message = "invalid params of " + msg.method + ": " + ex.what();
         reply.Error(err);
       } catch (...) {
-        lsResponseError err;
-        err.code = lsErrorCodes::InternalError;
+        ResponseError err;
+        err.code = ErrorCode::InternalError;
         err.message = "failed to process " + msg.method;
         reply.Error(err);
       }
     } else {
-      lsResponseError err;
-      err.code = lsErrorCodes::MethodNotFound;
+      ResponseError err;
+      err.code = ErrorCode::MethodNotFound;
       err.message = "unknown request " + msg.method;
       reply.Error(err);
     }
@@ -246,12 +246,12 @@ QueryFile *MessageHandler::FindFile(ReplyOnce &reply,
       for (auto &[root, folder] : project->root2folder)
         has_entry |= folder.path2entry_index.count(path);
     }
-    lsResponseError err;
+    ResponseError err;
     if (has_entry) {
-      err.code = lsErrorCodes::ServerNotInitialized;
+      err.code = ErrorCode::ServerNotInitialized;
       err.message = path + " is being indexed";
     } else {
-      err.code = lsErrorCodes::InternalError;
+      err.code = ErrorCode::InternalError;
       err.message = "unable to find " + path;
     }
     reply.Error(err);
@@ -262,7 +262,7 @@ QueryFile *MessageHandler::FindFile(ReplyOnce &reply,
 
 void EmitSkippedRanges(WorkingFile *wfile, QueryFile &file) {
   CclsSetSkippedRangesParams params;
-  params.uri = lsDocumentUri::FromPath(wfile->filename);
+  params.uri = DocumentUri::FromPath(wfile->filename);
   for (Range skipped : file.def->skipped_ranges)
     if (auto ls_skipped = GetLsRange(wfile, skipped))
       params.skippedRanges.push_back(*ls_skipped);
@@ -282,13 +282,13 @@ void EmitSemanticHighlight(DB *db, WorkingFile *wfile, QueryFile &file) {
   for (auto [sym, refcnt] : file.symbol2refcnt) {
     if (refcnt <= 0) continue;
     std::string_view detailed_name;
-    lsSymbolKind parent_kind = lsSymbolKind::Unknown;
-    lsSymbolKind kind = lsSymbolKind::Unknown;
+    SymbolKind parent_kind = SymbolKind::Unknown;
+    SymbolKind kind = SymbolKind::Unknown;
     uint8_t storage = SC_None;
     int idx;
     // This switch statement also filters out symbols that are not highlighted.
     switch (sym.kind) {
-    case SymbolKind::Func: {
+    case Kind::Func: {
       idx = db->func_usr[sym.usr];
       const QueryFunc &func = db->funcs[idx];
       const QueryFunc::Def *def = func.AnyDef();
@@ -322,7 +322,7 @@ void EmitSemanticHighlight(DB *db, WorkingFile *wfile, QueryFile &file) {
       sym.range.end.column = start_col + concise_name.size();
       break;
     }
-    case SymbolKind::Type: {
+    case Kind::Type: {
       idx = db->type_usr[sym.usr];
       const QueryType &type = db->types[idx];
       for (auto &def : type.def) {
@@ -335,7 +335,7 @@ void EmitSemanticHighlight(DB *db, WorkingFile *wfile, QueryFile &file) {
       }
       break;
     }
-    case SymbolKind::Var: {
+    case Kind::Var: {
       idx = db->var_usr[sym.usr];
       const QueryVar &var = db->vars[idx];
       for (auto &def : var.def) {
@@ -410,7 +410,7 @@ void EmitSemanticHighlight(DB *db, WorkingFile *wfile, QueryFile &file) {
   }
 
   CclsSemanticHighlightParams params;
-  params.uri = lsDocumentUri::FromPath(wfile->filename);
+  params.uri = DocumentUri::FromPath(wfile->filename);
   // Transform lsRange into pair<int, int> (offset pairs)
   if (!g_config->highlight.lsRanges) {
     std::vector<std::pair<lsRange, CclsSemanticHighlightSymbol *>> scratch;
diff --git a/src/message_handler.hh b/src/message_handler.hh
index a70bf413..6f8d2dff 100644
--- a/src/message_handler.hh
+++ b/src/message_handler.hh
@@ -20,54 +20,54 @@ struct WorkingFile;
 struct WorkingFiles;
 
 namespace pipeline {
-void Reply(lsRequestId id, const std::function<void(Writer &)> &fn);
-void ReplyError(lsRequestId id, const std::function<void(Writer &)> &fn);
+void Reply(RequestId id, const std::function<void(Writer &)> &fn);
+void ReplyError(RequestId id, const std::function<void(Writer &)> &fn);
 }
 
 struct EmptyParam {
   bool placeholder;
 };
 struct TextDocumentParam {
-  lsTextDocumentIdentifier textDocument;
+  TextDocumentIdentifier textDocument;
 };
 struct DidOpenTextDocumentParam {
-  lsTextDocumentItem textDocument;
+  TextDocumentItem textDocument;
 };
 
 struct TextDocumentPositionParam {
-  lsTextDocumentIdentifier textDocument;
+  TextDocumentIdentifier textDocument;
   lsPosition position;
 };
 
 struct RenameParam {
-  lsTextDocumentIdentifier textDocument;
+  TextDocumentIdentifier textDocument;
   lsPosition position;
   std::string newName;
 };
 
 // code*
 struct CodeActionParam {
-  lsTextDocumentIdentifier textDocument;
+  TextDocumentIdentifier textDocument;
   lsRange range;
   struct Context {
-    std::vector<lsDiagnostic> diagnostics;
+    std::vector<Diagnostic> diagnostics;
   } context;
 };
 
 // completion
-enum class lsCompletionTriggerKind {
+enum class CompletionTriggerKind {
   Invoked = 1,
   TriggerCharacter = 2,
   TriggerForIncompleteCompletions = 3,
 };
-struct lsCompletionContext {
-  lsCompletionTriggerKind triggerKind = lsCompletionTriggerKind::Invoked;
+struct CompletionContext {
+  CompletionTriggerKind triggerKind = CompletionTriggerKind::Invoked;
   std::optional<std::string> triggerCharacter;
 };
-struct lsCompletionParams : TextDocumentPositionParam {
-  lsCompletionContext context;
+struct CompletionParam : TextDocumentPositionParam {
+  CompletionContext context;
 };
-enum class lsCompletionItemKind {
+enum class CompletionItemKind {
   Text = 1,
   Method = 2,
   Function = 3,
@@ -94,21 +94,21 @@ enum class lsCompletionItemKind {
   Operator = 24,
   TypeParameter = 25,
 };
-enum class lsInsertTextFormat {
+enum class InsertTextFormat {
   PlainText = 1,
   Snippet = 2
 };
-struct lsCompletionItem {
+struct CompletionItem {
   std::string label;
-  lsCompletionItemKind kind = lsCompletionItemKind::Text;
+  CompletionItemKind kind = CompletionItemKind::Text;
   std::string detail;
   std::optional<std::string> documentation;
   std::string sortText;
   std::optional<std::string> filterText;
   std::string insertText;
-  lsInsertTextFormat insertTextFormat = lsInsertTextFormat::PlainText;
-  lsTextEdit textEdit;
-  std::vector<lsTextEdit> additionalTextEdits;
+  InsertTextFormat insertTextFormat = InsertTextFormat::PlainText;
+  TextEdit textEdit;
+  std::vector<TextEdit> additionalTextEdits;
 
   std::vector<std::string> parameters_;
   int score_;
@@ -122,17 +122,17 @@ struct FormattingOptions {
   bool insertSpaces;
 };
 struct DocumentFormattingParam {
-  lsTextDocumentIdentifier textDocument;
+  TextDocumentIdentifier textDocument;
   FormattingOptions options;
 };
 struct DocumentOnTypeFormattingParam {
-  lsTextDocumentIdentifier textDocument;
+  TextDocumentIdentifier textDocument;
   lsPosition position;
   std::string ch;
   FormattingOptions options;
 };
 struct DocumentRangeFormattingParam {
-  lsTextDocumentIdentifier textDocument;
+  TextDocumentIdentifier textDocument;
   lsRange range;
   FormattingOptions options;
 };
@@ -145,7 +145,7 @@ enum class FileChangeType {
 };
 struct DidChangeWatchedFilesParam {
   struct Event {
-    lsDocumentUri uri;
+    DocumentUri uri;
     FileChangeType type;
   };
   std::vector<Event> changes;
@@ -167,7 +167,7 @@ template <typename Res>
 using Callback = std::function<void(Res*)>;
 
 struct ReplyOnce {
-  lsRequestId id;
+  RequestId id;
   template <typename Res> void operator()(Res &result) const {
     if (id.Valid())
       pipeline::Reply(id, [&](Writer &w) { Reflect(w, result); });
@@ -217,7 +217,7 @@ private:
   void shutdown(EmptyParam &, ReplyOnce &);
   void textDocument_codeAction(CodeActionParam &, ReplyOnce &);
   void textDocument_codeLens(TextDocumentParam &, ReplyOnce &);
-  void textDocument_completion(lsCompletionParams &, ReplyOnce &);
+  void textDocument_completion(CompletionParam &, ReplyOnce &);
   void textDocument_definition(TextDocumentPositionParam &, ReplyOnce &);
   void textDocument_didChange(TextDocumentDidChangeParam &);
   void textDocument_didClose(TextDocumentParam &);
diff --git a/src/messages/ccls_call.cc b/src/messages/ccls_call.cc
index 363552d9..bf59c85f 100644
--- a/src/messages/ccls_call.cc
+++ b/src/messages/ccls_call.cc
@@ -47,7 +47,7 @@ struct Out_cclsCall {
   Usr usr;
   std::string id;
   std::string_view name;
-  lsLocation location;
+  Location location;
   CallType callType = CallType::Direct;
   int numChildren;
   // Empty if the |levels| limit is reached.
@@ -85,15 +85,14 @@ bool Expand(MessageHandler *m, Out_cclsCall *entry, bool callee,
     if (callee) {
       if (const auto *def = func.AnyDef())
         for (SymbolRef sym : def->callees)
-          if (sym.kind == SymbolKind::Func)
+          if (sym.kind == Kind::Func)
             handle(sym, def->file_id, call_type);
     } else {
       for (Use use : func.uses) {
         const QueryFile &file1 = m->db->files[use.file_id];
         Maybe<ExtentRef> best;
         for (auto [sym, refcnt] : file1.symbol2refcnt)
-          if (refcnt > 0 && sym.extent.Valid() &&
-              sym.kind == SymbolKind::Func &&
+          if (refcnt > 0 && sym.extent.Valid() && sym.kind == Kind::Func &&
               sym.extent.start <= use.range.start &&
               use.range.end <= sym.extent.end &&
               (!best || best->extent.start < sym.extent.start))
@@ -195,7 +194,7 @@ void MessageHandler::ccls_call(Reader &reader, ReplyOnce &reply) {
     WorkingFile *working_file = wfiles->GetFileByFilename(file->def->path);
     for (SymbolRef sym :
          FindSymbolsAtLocation(working_file, file, param.position)) {
-      if (sym.kind == SymbolKind::Func) {
+      if (sym.kind == Kind::Func) {
         result = BuildInitial(this, sym.usr, param.callee, param.callType,
                               param.qualified, param.levels);
         break;
diff --git a/src/messages/ccls_inheritance.cc b/src/messages/ccls_inheritance.cc
index 6a206edf..c164bbcc 100644
--- a/src/messages/ccls_inheritance.cc
+++ b/src/messages/ccls_inheritance.cc
@@ -15,7 +15,7 @@ struct Param : TextDocumentPositionParam {
   // should be specified for building the root and |levels| of nodes below.
   Usr usr;
   std::string id;
-  SymbolKind kind = SymbolKind::Invalid;
+  Kind kind = Kind::Invalid;
 
   // true: derived classes/functions; false: base classes/functions
   bool derived = false;
@@ -30,9 +30,9 @@ MAKE_REFLECT_STRUCT(Param, textDocument, position, id, kind, derived, qualified,
 struct Out_cclsInheritance {
   Usr usr;
   std::string id;
-  SymbolKind kind;
+  Kind kind;
   std::string_view name;
-  lsLocation location;
+  Location location;
   // For unexpanded nodes, this is an upper bound because some entities may be
   // undefined. If it is 0, there are no members.
   int numChildren;
@@ -99,7 +99,7 @@ bool ExpandHelper(MessageHandler *m, Out_cclsInheritance *entry, bool derived,
 
 bool Expand(MessageHandler *m, Out_cclsInheritance *entry, bool derived,
             bool qualified, int levels) {
-  if (entry->kind == SymbolKind::Func)
+  if (entry->kind == Kind::Func)
     return ExpandHelper(m, entry, derived, qualified, levels,
                         m->db->Func(entry->usr));
   else
@@ -129,10 +129,9 @@ void Inheritance(MessageHandler *m, Param &param, ReplyOnce &reply) {
     result->id = std::to_string(param.usr);
     result->usr = param.usr;
     result->kind = param.kind;
-    if (!(((param.kind == SymbolKind::Func && m->db->HasFunc(param.usr)) ||
-           (param.kind == SymbolKind::Type && m->db->HasType(param.usr))) &&
-          Expand(m, &*result, param.derived, param.qualified,
-                 param.levels)))
+    if (!(((param.kind == Kind::Func && m->db->HasFunc(param.usr)) ||
+           (param.kind == Kind::Type && m->db->HasType(param.usr))) &&
+          Expand(m, &*result, param.derived, param.qualified, param.levels)))
       result.reset();
   } else {
     QueryFile *file = m->FindFile(reply, param.textDocument.uri.GetPath());
@@ -141,7 +140,7 @@ void Inheritance(MessageHandler *m, Param &param, ReplyOnce &reply) {
     WorkingFile *wfile = m->wfiles->GetFileByFilename(file->def->path);
 
     for (SymbolRef sym : FindSymbolsAtLocation(wfile, file, param.position))
-      if (sym.kind == SymbolKind::Func || sym.kind == SymbolKind::Type) {
+      if (sym.kind == Kind::Func || sym.kind == Kind::Type) {
         result = BuildInitial(m, sym, param.derived, param.qualified,
                               param.levels);
         break;
diff --git a/src/messages/ccls_member.cc b/src/messages/ccls_member.cc
index 3e6d1804..1ae3470c 100644
--- a/src/messages/ccls_member.cc
+++ b/src/messages/ccls_member.cc
@@ -24,9 +24,9 @@ struct Param : TextDocumentPositionParam {
 
   bool qualified = false;
   int levels = 1;
-  // If SymbolKind::Func and the point is at a type, list member functions
-  // instead of member variables.
-  SymbolKind kind = SymbolKind::Var;
+  // If Kind::Func and the point is at a type, list member functions instead of
+  // member variables.
+  Kind kind = Kind::Var;
   bool hierarchy = false;
 };
 
@@ -38,7 +38,7 @@ struct Out_cclsMember {
   std::string id;
   std::string_view name;
   std::string fieldName;
-  lsLocation location;
+  Location location;
   // For unexpanded nodes, this is an upper bound because some entities may be
   // undefined. If it is 0, there are no members.
   int numChildren = 0;
@@ -49,7 +49,7 @@ MAKE_REFLECT_STRUCT(Out_cclsMember, id, name, fieldName, location, numChildren,
                     children);
 
 bool Expand(MessageHandler *m, Out_cclsMember *entry, bool qualified,
-            int levels, SymbolKind memberKind);
+            int levels, Kind memberKind);
 
 // Add a field to |entry| which is a Func/Type.
 void DoField(MessageHandler *m, Out_cclsMember *entry, const QueryVar &var,
@@ -77,14 +77,14 @@ void DoField(MessageHandler *m, Out_cclsMember *entry, const QueryVar &var,
     entry1.fieldName += def1->Name(false);
   }
   if (def1->spell) {
-    if (std::optional<lsLocation> loc =
+    if (std::optional<Location> loc =
             GetLsLocation(m->db, m->wfiles, *def1->spell))
       entry1.location = *loc;
   }
   if (def1->type) {
     entry1.id = std::to_string(def1->type);
     entry1.usr = def1->type;
-    if (Expand(m, &entry1, qualified, levels, SymbolKind::Var))
+    if (Expand(m, &entry1, qualified, levels, Kind::Var))
       entry->children.push_back(std::move(entry1));
   } else {
     entry1.id = "0";
@@ -95,7 +95,7 @@ void DoField(MessageHandler *m, Out_cclsMember *entry, const QueryVar &var,
 
 // Expand a type node by adding members recursively to it.
 bool Expand(MessageHandler *m, Out_cclsMember *entry, bool qualified,
-            int levels, SymbolKind memberKind) {
+            int levels, Kind memberKind) {
   if (0 < entry->usr && entry->usr <= BuiltinType::LastKind) {
     entry->name = ClangBuiltinTypeName(int(entry->usr));
     return true;
@@ -117,7 +117,7 @@ bool Expand(MessageHandler *m, Out_cclsMember *entry, bool qualified,
       const auto *def = type->AnyDef();
       if (!def)
         continue;
-      if (def->kind != lsSymbolKind::Namespace)
+      if (def->kind != SymbolKind::Namespace)
         for (Usr usr : def->bases) {
           auto &type1 = m->db->Type(usr);
           if (type1.def.size()) {
@@ -132,13 +132,13 @@ bool Expand(MessageHandler *m, Out_cclsMember *entry, bool qualified,
         entry1.usr = def->alias_of;
         if (def1 && def1->spell) {
           // The declaration of target type.
-          if (std::optional<lsLocation> loc =
+          if (std::optional<Location> loc =
                   GetLsLocation(m->db, m->wfiles, *def1->spell))
             entry1.location = *loc;
         } else if (def->spell) {
           // Builtin types have no declaration but the typedef declaration
           // itself is useful.
-          if (std::optional<lsLocation> loc =
+          if (std::optional<Location> loc =
                   GetLsLocation(m->db, m->wfiles, *def->spell))
             entry1.location = *loc;
         }
@@ -150,7 +150,7 @@ bool Expand(MessageHandler *m, Out_cclsMember *entry, bool qualified,
             entry1.fieldName = std::string(entry1.name);
           entry->children.push_back(std::move(entry1));
         }
-      } else if (memberKind == SymbolKind::Func) {
+      } else if (memberKind == Kind::Func) {
         llvm::DenseSet<Usr, DenseMapInfoForUsr> seen1;
         for (auto &def : type->def)
           for (Usr usr : def.funcs)
@@ -170,7 +170,7 @@ bool Expand(MessageHandler *m, Out_cclsMember *entry, bool qualified,
                 entry->children.push_back(std::move(entry1));
               }
             }
-      } else if (memberKind == SymbolKind::Type) {
+      } else if (memberKind == Kind::Type) {
         llvm::DenseSet<Usr, DenseMapInfoForUsr> seen1;
         for (auto &def : type->def)
           for (Usr usr : def.types)
@@ -207,13 +207,13 @@ bool Expand(MessageHandler *m, Out_cclsMember *entry, bool qualified,
   return true;
 }
 
-std::optional<Out_cclsMember> BuildInitial(MessageHandler *m, SymbolKind kind,
+std::optional<Out_cclsMember> BuildInitial(MessageHandler *m, Kind kind,
                                            Usr root_usr, bool qualified,
-                                           int levels, SymbolKind memberKind) {
+                                           int levels, Kind memberKind) {
   switch (kind) {
   default:
     return {};
-  case SymbolKind::Func: {
+  case Kind::Func: {
     const auto *def = m->db->Func(root_usr).AnyDef();
     if (!def)
       return {};
@@ -232,7 +232,7 @@ std::optional<Out_cclsMember> BuildInitial(MessageHandler *m, SymbolKind kind,
     }
     return entry;
   }
-  case SymbolKind::Type: {
+  case Kind::Type: {
     const auto *def = m->db->Type(root_usr).AnyDef();
     if (!def)
       return {};
@@ -276,15 +276,15 @@ void MessageHandler::ccls_member(Reader &reader, ReplyOnce &reply) {
     for (SymbolRef sym :
          FindSymbolsAtLocation(wfile, file, param.position)) {
       switch (sym.kind) {
-      case SymbolKind::Func:
-      case SymbolKind::Type:
+      case Kind::Func:
+      case Kind::Type:
         result = BuildInitial(this, sym.kind, sym.usr, param.qualified,
                               param.levels, param.kind);
         break;
-      case SymbolKind::Var: {
+      case Kind::Var: {
         const QueryVar::Def *def = db->GetVar(sym).AnyDef();
         if (def && def->type)
-          result = BuildInitial(this, SymbolKind::Type, def->type, param.qualified,
+          result = BuildInitial(this, Kind::Type, def->type, param.qualified,
                                 param.levels, param.kind);
         break;
       }
diff --git a/src/messages/ccls_navigate.cc b/src/messages/ccls_navigate.cc
index b52d8345..d3225345 100644
--- a/src/messages/ccls_navigate.cc
+++ b/src/messages/ccls_navigate.cc
@@ -7,7 +7,7 @@
 namespace ccls {
 namespace {
 struct Param {
-  lsTextDocumentIdentifier textDocument;
+  TextDocumentIdentifier textDocument;
   lsPosition position;
   std::string direction;
 };
@@ -83,10 +83,10 @@ void MessageHandler::ccls_navigate(Reader &reader,
         res = sym.extent;
     break;
   }
-  std::vector<lsLocation> result;
+  std::vector<Location> result;
   if (res)
     if (auto ls_range = GetLsRange(wfile, *res)) {
-      lsLocation &ls_loc = result.emplace_back();
+      Location &ls_loc = result.emplace_back();
       ls_loc.uri = param.textDocument.uri;
       ls_loc.range = *ls_range;
     }
diff --git a/src/messages/ccls_reload.cc b/src/messages/ccls_reload.cc
index 1ee03dd5..944f9a06 100644
--- a/src/messages/ccls_reload.cc
+++ b/src/messages/ccls_reload.cc
@@ -28,7 +28,7 @@ void MessageHandler::ccls_reload(Reader &reader) {
   if (param.whitelist.empty() && param.blacklist.empty()) {
     vfs->Clear();
     db->clear();
-    project->Index(wfiles, lsRequestId());
+    project->Index(wfiles, RequestId());
     clang_complete->FlushAllSessions();
     return;
   }
diff --git a/src/messages/ccls_vars.cc b/src/messages/ccls_vars.cc
index 13b81752..52c41ebe 100644
--- a/src/messages/ccls_vars.cc
+++ b/src/messages/ccls_vars.cc
@@ -24,21 +24,21 @@ void MessageHandler::ccls_vars(Reader &reader, ReplyOnce &reply) {
     return;
   WorkingFile *working_file = wfiles->GetFileByFilename(file->def->path);
 
-  std::vector<lsLocation> result;
+  std::vector<Location> result;
   for (SymbolRef sym :
        FindSymbolsAtLocation(working_file, file, param.position)) {
     Usr usr = sym.usr;
     switch (sym.kind) {
     default:
       break;
-    case SymbolKind::Var: {
+    case Kind::Var: {
       const QueryVar::Def *def = db->GetVar(sym).AnyDef();
       if (!def || !def->type)
         continue;
       usr = def->type;
       [[fallthrough]];
     }
-    case SymbolKind::Type:
+    case Kind::Type:
       result = GetLsLocations(
           db, wfiles,
           GetVarDeclarations(db, db->Type(usr).instances, param.kind));
diff --git a/src/messages/initialize.cc b/src/messages/initialize.cc
index 4c6ef4bc..14e4b7f4 100644
--- a/src/messages/initialize.cc
+++ b/src/messages/initialize.cc
@@ -26,105 +26,37 @@ using namespace llvm;
 extern std::string g_init_options;
 
 namespace {
+enum class TextDocumentSyncKind { None = 0, Full = 1, Incremental = 2 };
+MAKE_REFLECT_TYPE_PROXY(TextDocumentSyncKind)
 
-// Code Lens options.
-struct lsCodeLensOptions {
-  // Code lens has a resolve provider as well.
-  bool resolveProvider = false;
-};
-MAKE_REFLECT_STRUCT(lsCodeLensOptions, resolveProvider);
-
-// Completion options.
-struct lsCompletionOptions {
-  // The server provides support to resolve additional
-  // information for a completion item.
-  bool resolveProvider = false;
-
-  // The characters that trigger completion automatically.
-  // vscode doesn't support trigger character sequences, so we use ':'
-  // for
-  // '::' and '>' for '->'. See
-  // https://github.com/Microsoft/language-server-protocol/issues/138.
-  std::vector<std::string> triggerCharacters = {".", ":",  ">", "#",
-                                                "<", "\"", "/"};
-};
-MAKE_REFLECT_STRUCT(lsCompletionOptions, resolveProvider, triggerCharacters);
-
-// Format document on type options
-struct lsDocumentOnTypeFormattingOptions {
-  // A character on which formatting should be triggered, like `}`.
-  std::string firstTriggerCharacter = "}";
-
-  // More trigger characters.
-  std::vector<std::string> moreTriggerCharacter;
-};
-MAKE_REFLECT_STRUCT(lsDocumentOnTypeFormattingOptions, firstTriggerCharacter,
-                    moreTriggerCharacter);
-
-
-// Save options.
-struct lsSaveOptions {
-  // The client is supposed to include the content on save.
-  bool includeText = false;
-};
-MAKE_REFLECT_STRUCT(lsSaveOptions, includeText);
-
-// Signature help options.
-struct lsSignatureHelpOptions {
-  // The characters that trigger signature help automatically.
-  // NOTE: If updating signature help tokens make sure to also update
-  // WorkingFile::FindClosestCallNameInBuffer.
-  std::vector<std::string> triggerCharacters = {"(", ","};
-};
-MAKE_REFLECT_STRUCT(lsSignatureHelpOptions, triggerCharacters);
-
-// Defines how the host (editor) should sync document changes to the language
-// server.
-enum class lsTextDocumentSyncKind {
-  // Documents should not be synced at all.
-  None = 0,
-
-  // Documents are synced by always sending the full content
-  // of the document.
-  Full = 1,
-
-  // Documents are synced by sending the full content on open.
-  // After that only incremental updates to the document are
-  // send.
-  Incremental = 2
-};
-MAKE_REFLECT_TYPE_PROXY(lsTextDocumentSyncKind)
-
-struct lsTextDocumentSyncOptions {
-  // Open and close notifications are sent to the server.
-  bool openClose = false;
-  // Change notificatins are sent to the server. See TextDocumentSyncKind.None,
-  // TextDocumentSyncKind.Full and TextDocumentSyncKindIncremental.
-  lsTextDocumentSyncKind change = lsTextDocumentSyncKind::Incremental;
-  // Will save notifications are sent to the server.
-  std::optional<bool> willSave;
-  // Will save wait until requests are sent to the server.
-  std::optional<bool> willSaveWaitUntil;
-  // Save notifications are sent to the server.
-  std::optional<lsSaveOptions> save;
-};
-MAKE_REFLECT_STRUCT(lsTextDocumentSyncOptions, openClose, change, willSave,
-                    willSaveWaitUntil, save);
-
-struct lsServerCapabilities {
-  // Defines how text documents are synced. Is either a detailed structure
-  // defining each notification or for backwards compatibility the
-  // TextDocumentSyncKind number.
-  // TODO: It seems like the new API is broken and doesn't work.
-  // std::optional<lsTextDocumentSyncOptions> textDocumentSync;
-  lsTextDocumentSyncKind textDocumentSync = lsTextDocumentSyncKind::Incremental;
+struct ServerCap {
+  struct SaveOptions {
+    bool includeText = false;
+  };
+  struct TextDocumentSyncOptions {
+    bool openClose = true;
+    TextDocumentSyncKind change = TextDocumentSyncKind::Incremental;
+    bool willSave = false;
+    bool willSaveWaitUntil = false;
+    SaveOptions save;
+  } textDocumentSync;
 
   // The server provides hover support.
   bool hoverProvider = true;
-  // The server provides completion support.
-  lsCompletionOptions completionProvider;
-  // The server provides signature help support.
-  lsSignatureHelpOptions signatureHelpProvider;
+  struct CompletionOptions {
+    bool resolveProvider = false;
+
+    // The characters that trigger completion automatically.
+    // vscode doesn't support trigger character sequences, so we use ':'
+    // for
+    // '::' and '>' for '->'. See
+    // https://github.com/Microsoft/language-server-protocol/issues/138.
+    std::vector<std::string> triggerCharacters = {".", ":",  ">", "#",
+                                                  "<", "\"", "/"};
+  } completionProvider;
+  struct SignatureHelpOptions {
+    std::vector<std::string> triggerCharacters = {"(", ","};
+  } signatureHelpProvider;
   bool definitionProvider = true;
   bool typeDefinitionProvider = true;
   bool implementationProvider = true;
@@ -133,10 +65,15 @@ struct lsServerCapabilities {
   bool documentSymbolProvider = true;
   bool workspaceSymbolProvider = true;
   bool codeActionProvider = true;
-  lsCodeLensOptions codeLensProvider;
+  struct CodeLensOptions {
+    bool resolveProvider = false;
+  } codeLensProvider;
   bool documentFormattingProvider = true;
   bool documentRangeFormattingProvider = true;
-  lsDocumentOnTypeFormattingOptions documentOnTypeFormattingProvider;
+  struct DocumentOnTypeFormattingOptions {
+    std::string firstTriggerCharacter = "}";
+    std::vector<std::string> moreTriggerCharacter;
+  } documentOnTypeFormattingProvider;
   bool renameProvider = true;
   struct DocumentLinkOptions {
     bool resolveProvider = true;
@@ -153,12 +90,21 @@ struct lsServerCapabilities {
     } workspaceFolders;
   } workspace;
 };
-MAKE_REFLECT_STRUCT(lsServerCapabilities::DocumentLinkOptions, resolveProvider);
-MAKE_REFLECT_STRUCT(lsServerCapabilities::ExecuteCommandOptions, commands);
-MAKE_REFLECT_STRUCT(lsServerCapabilities::Workspace::WorkspaceFolders,
-                    supported, changeNotifications);
-MAKE_REFLECT_STRUCT(lsServerCapabilities::Workspace, workspaceFolders);
-MAKE_REFLECT_STRUCT(lsServerCapabilities, textDocumentSync, hoverProvider,
+MAKE_REFLECT_STRUCT(ServerCap::CompletionOptions, resolveProvider,
+                    triggerCharacters);
+MAKE_REFLECT_STRUCT(ServerCap::CodeLensOptions, resolveProvider);
+MAKE_REFLECT_STRUCT(ServerCap::DocumentLinkOptions, resolveProvider);
+MAKE_REFLECT_STRUCT(ServerCap::DocumentOnTypeFormattingOptions,
+                    firstTriggerCharacter, moreTriggerCharacter);
+MAKE_REFLECT_STRUCT(ServerCap::ExecuteCommandOptions, commands);
+MAKE_REFLECT_STRUCT(ServerCap::SaveOptions, includeText);
+MAKE_REFLECT_STRUCT(ServerCap::SignatureHelpOptions, triggerCharacters);
+MAKE_REFLECT_STRUCT(ServerCap::TextDocumentSyncOptions, openClose, change,
+                    willSave, willSaveWaitUntil, save);
+MAKE_REFLECT_STRUCT(ServerCap::Workspace::WorkspaceFolders, supported,
+                    changeNotifications);
+MAKE_REFLECT_STRUCT(ServerCap::Workspace, workspaceFolders);
+MAKE_REFLECT_STRUCT(ServerCap, textDocumentSync, hoverProvider,
                     completionProvider, signatureHelpProvider,
                     definitionProvider, implementationProvider,
                     typeDefinitionProvider, referencesProvider,
@@ -170,72 +116,38 @@ MAKE_REFLECT_STRUCT(lsServerCapabilities, textDocumentSync, hoverProvider,
                     documentLinkProvider, foldingRangeProvider,
                     executeCommandProvider, workspace);
 
+struct DynamicReg {
+  bool dynamicRegistration = false;
+};
+MAKE_REFLECT_STRUCT(DynamicReg, dynamicRegistration);
+
 // Workspace specific client capabilities.
-struct lsWorkspaceClientCapabilites {
+struct WorkspaceClientCap {
   // The client supports applying batch edits to the workspace.
   std::optional<bool> applyEdit;
 
-  struct lsWorkspaceEdit {
+  struct WorkspaceEdit {
     // The client supports versioned document changes in `WorkspaceEdit`s
     std::optional<bool> documentChanges;
   };
 
   // Capabilities specific to `WorkspaceEdit`s
-  std::optional<lsWorkspaceEdit> workspaceEdit;
-
-  struct lsGenericDynamicReg {
-    // Did foo notification supports dynamic registration.
-    std::optional<bool> dynamicRegistration;
-  };
-
-  // Capabilities specific to the `workspace/didChangeConfiguration`
-  // notification.
-  std::optional<lsGenericDynamicReg> didChangeConfiguration;
-
-  // Capabilities specific to the `workspace/didChangeWatchedFiles`
-  // notification.
-  std::optional<lsGenericDynamicReg> didChangeWatchedFiles;
-
-  // Capabilities specific to the `workspace/symbol` request.
-  std::optional<lsGenericDynamicReg> symbol;
-
-  // Capabilities specific to the `workspace/executeCommand` request.
-  std::optional<lsGenericDynamicReg> executeCommand;
+  std::optional<WorkspaceEdit> workspaceEdit;
+  DynamicReg didChangeConfiguration;
+  DynamicReg didChangeWatchedFiles;
+  DynamicReg symbol;
+  DynamicReg executeCommand;
 };
 
-MAKE_REFLECT_STRUCT(lsWorkspaceClientCapabilites::lsWorkspaceEdit,
-                    documentChanges);
-MAKE_REFLECT_STRUCT(lsWorkspaceClientCapabilites::lsGenericDynamicReg,
-                    dynamicRegistration);
-MAKE_REFLECT_STRUCT(lsWorkspaceClientCapabilites, applyEdit, workspaceEdit,
+MAKE_REFLECT_STRUCT(WorkspaceClientCap::WorkspaceEdit, documentChanges);
+MAKE_REFLECT_STRUCT(WorkspaceClientCap, applyEdit, workspaceEdit,
                     didChangeConfiguration, didChangeWatchedFiles, symbol,
                     executeCommand);
 
 // Text document specific client capabilities.
-struct lsTextDocumentClientCapabilities {
-  struct lsSynchronization {
-    // Whether text document synchronization supports dynamic registration.
-    std::optional<bool> dynamicRegistration;
-
-    // The client supports sending will save notifications.
-    std::optional<bool> willSave;
-
-    // The client supports sending a will save request and
-    // waits for a response providing text edits which will
-    // be applied to the document before it is saved.
-    std::optional<bool> willSaveWaitUntil;
-
-    // The client supports did save notifications.
-    std::optional<bool> didSave;
-  };
-
-  lsSynchronization synchronization;
-
-  struct lsCompletion {
-    // Whether completion supports dynamic registration.
-    std::optional<bool> dynamicRegistration;
-
-    struct lsCompletionItem {
+struct TextDocumentClientCap {
+  struct Completion {
+    struct CompletionItem {
       // Client supports snippets as insert text.
       //
       // A snippet can define tab stops and placeholders with `$1`, `$2`
@@ -246,99 +158,65 @@ struct lsTextDocumentClientCapabilities {
     } completionItem;
   } completion;
 
-  struct lsDocumentSymbol {
+  struct DocumentSymbol {
     bool hierarchicalDocumentSymbolSupport = false;
   } documentSymbol;
-
-  struct lsGenericDynamicReg {
-    // Whether foo supports dynamic registration.
-    std::optional<bool> dynamicRegistration;
-  };
-
-  struct CodeLensRegistrationOptions : public lsGenericDynamicReg {
-    // Code lens has a resolve provider as well.
-    bool resolveProvider;
-  };
-
-  // Capabilities specific to the `textDocument/codeLens`
-  std::optional<CodeLensRegistrationOptions> codeLens;
-
-  // Capabilities specific to the `textDocument/rename`
-  std::optional<lsGenericDynamicReg> rename;
 };
 
-MAKE_REFLECT_STRUCT(lsTextDocumentClientCapabilities::lsSynchronization,
-                    dynamicRegistration, willSave, willSaveWaitUntil, didSave);
-MAKE_REFLECT_STRUCT(lsTextDocumentClientCapabilities::lsCompletion,
-                    dynamicRegistration, completionItem);
-MAKE_REFLECT_STRUCT(lsTextDocumentClientCapabilities::lsDocumentSymbol,
+MAKE_REFLECT_STRUCT(TextDocumentClientCap::Completion::CompletionItem,
+                    snippetSupport);
+MAKE_REFLECT_STRUCT(TextDocumentClientCap::Completion, completionItem);
+MAKE_REFLECT_STRUCT(TextDocumentClientCap::DocumentSymbol,
                     hierarchicalDocumentSymbolSupport);
-MAKE_REFLECT_STRUCT(
-    lsTextDocumentClientCapabilities::lsCompletion::lsCompletionItem,
-    snippetSupport);
-MAKE_REFLECT_STRUCT(lsTextDocumentClientCapabilities::lsGenericDynamicReg,
-                    dynamicRegistration);
-MAKE_REFLECT_STRUCT(
-    lsTextDocumentClientCapabilities::CodeLensRegistrationOptions,
-    dynamicRegistration, resolveProvider);
-MAKE_REFLECT_STRUCT(lsTextDocumentClientCapabilities, completion,
-                    documentSymbol, rename, synchronization);
+MAKE_REFLECT_STRUCT(TextDocumentClientCap, completion, documentSymbol);
 
-struct lsClientCapabilities {
-  // Workspace specific client capabilities.
-  lsWorkspaceClientCapabilites workspace;
-
-  // Text document specific client capabilities.
-  lsTextDocumentClientCapabilities textDocument;
+struct ClientCap {
+  WorkspaceClientCap workspace;
+  TextDocumentClientCap textDocument;
 };
-MAKE_REFLECT_STRUCT(lsClientCapabilities, workspace, textDocument);
+MAKE_REFLECT_STRUCT(ClientCap, workspace, textDocument);
 
-struct lsInitializeParams {
+struct InitializeParam {
   // The rootUri of the workspace. Is null if no
   // folder is open. If both `rootPath` and `rootUri` are set
   // `rootUri` wins.
-  std::optional<lsDocumentUri> rootUri;
+  std::optional<DocumentUri> rootUri;
 
-  // User provided initialization options.
   Config initializationOptions;
+  ClientCap capabilities;
 
-  // The capabilities provided by the client (editor or tool)
-  lsClientCapabilities capabilities;
-
-  enum class lsTrace {
+  enum class Trace {
     // NOTE: serialized as a string, one of 'off' | 'messages' | 'verbose';
     Off,      // off
     Messages, // messages
     Verbose   // verbose
   };
-
-  // The initial trace setting. If omitted trace is disabled ('off').
-  lsTrace trace = lsTrace::Off;
+  Trace trace = Trace::Off;
 
   std::vector<WorkspaceFolder> workspaceFolders;
 };
 
-void Reflect(Reader &reader, lsInitializeParams::lsTrace &value) {
+void Reflect(Reader &reader, InitializeParam::Trace &value) {
   if (!reader.IsString()) {
-    value = lsInitializeParams::lsTrace::Off;
+    value = InitializeParam::Trace::Off;
     return;
   }
   std::string v = reader.GetString();
   if (v == "off")
-    value = lsInitializeParams::lsTrace::Off;
+    value = InitializeParam::Trace::Off;
   else if (v == "messages")
-    value = lsInitializeParams::lsTrace::Messages;
+    value = InitializeParam::Trace::Messages;
   else if (v == "verbose")
-    value = lsInitializeParams::lsTrace::Verbose;
+    value = InitializeParam::Trace::Verbose;
 }
 
-MAKE_REFLECT_STRUCT(lsInitializeParams, rootUri, initializationOptions,
+MAKE_REFLECT_STRUCT(InitializeParam, rootUri, initializationOptions,
                     capabilities, trace, workspaceFolders);
 
-struct lsInitializeResult {
-  lsServerCapabilities capabilities;
+struct InitializeResult {
+  ServerCap capabilities;
 };
-MAKE_REFLECT_STRUCT(lsInitializeResult, capabilities);
+MAKE_REFLECT_STRUCT(InitializeResult, capabilities);
 
 void *Indexer(void *arg_) {
   MessageHandler *h;
@@ -353,7 +231,7 @@ void *Indexer(void *arg_) {
 }
 } // namespace
 
-void Initialize(MessageHandler *m, lsInitializeParams &param, ReplyOnce &reply) {
+void Initialize(MessageHandler *m, InitializeParam &param, ReplyOnce &reply) {
   std::string project_path = NormalizePath(param.rootUri->GetPath());
   LOG_S(INFO) << "initialize in directory " << project_path << " with uri "
               << param.rootUri->raw_uri;
@@ -401,7 +279,7 @@ void Initialize(MessageHandler *m, lsInitializeParams &param, ReplyOnce &reply)
   // Send initialization before starting indexers, so we don't send a
   // status update too early.
   {
-    lsInitializeResult result;
+    InitializeResult result;
     reply(result);
   }
 
@@ -448,7 +326,7 @@ void Initialize(MessageHandler *m, lsInitializeParams &param, ReplyOnce &reply)
 }
 
 void MessageHandler::initialize(Reader &reader, ReplyOnce &reply) {
-  lsInitializeParams param;
+  InitializeParam param;
   Reflect(reader, param);
   if (!param.rootUri)
     return;
@@ -456,8 +334,8 @@ void MessageHandler::initialize(Reader &reader, ReplyOnce &reply) {
 }
 
 void StandaloneInitialize(MessageHandler &handler, const std::string &root) {
-  lsInitializeParams param;
-  param.rootUri = lsDocumentUri::FromPath(root);
+  InitializeParam param;
+  param.rootUri = DocumentUri::FromPath(root);
   ReplyOnce reply;
   Initialize(&handler, param, reply);
 }
diff --git a/src/messages/textDocument_code.cc b/src/messages/textDocument_code.cc
index b96f8039..0a780460 100644
--- a/src/messages/textDocument_code.cc
+++ b/src/messages/textDocument_code.cc
@@ -15,7 +15,7 @@ namespace {
 struct CodeAction {
   std::string title;
   const char *kind = "quickfix";
-  lsWorkspaceEdit edit;
+  WorkspaceEdit edit;
 };
 MAKE_REFLECT_STRUCT(CodeAction, title, kind, edit);
 }
@@ -27,9 +27,9 @@ void MessageHandler::textDocument_codeAction(CodeActionParam &param,
     return;
   }
   std::vector<CodeAction> result;
-  std::vector<lsDiagnostic> diagnostics;
+  std::vector<Diagnostic> diagnostics;
   wfiles->DoAction([&]() { diagnostics = wfile->diagnostics_; });
-  for (lsDiagnostic &diag : diagnostics)
+  for (Diagnostic &diag : diagnostics)
     if (diag.fixits_.size()) {
       CodeAction &cmd = result.emplace_back();
       cmd.title = "FixIt: " + diag.message;
@@ -44,21 +44,21 @@ void MessageHandler::textDocument_codeAction(CodeActionParam &param,
 namespace {
 struct Cmd_xref {
   Usr usr;
-  SymbolKind kind;
+  Kind kind;
   std::string field;
 };
-struct lsCommand {
+struct Command {
   std::string title;
   std::string command;
   std::vector<std::string> arguments;
 };
-struct lsCodeLens {
+struct CodeLens {
   lsRange range;
-  std::optional<lsCommand> command;
+  std::optional<Command> command;
 };
 MAKE_REFLECT_STRUCT(Cmd_xref, usr, kind, field);
-MAKE_REFLECT_STRUCT(lsCommand, title, command, arguments);
-MAKE_REFLECT_STRUCT(lsCodeLens, range, command);
+MAKE_REFLECT_STRUCT(Command, title, command, arguments);
+MAKE_REFLECT_STRUCT(CodeLens, range, command);
 
 template <typename T>
 std::string ToString(T &v) {
@@ -70,7 +70,7 @@ std::string ToString(T &v) {
 }
 
 struct CommonCodeLensParams {
-  std::vector<lsCodeLens> *result;
+  std::vector<CodeLens> *result;
   DB *db;
   WorkingFile *wfile;
 };
@@ -78,7 +78,7 @@ struct CommonCodeLensParams {
 
 void MessageHandler::textDocument_codeLens(TextDocumentParam &param,
                                            ReplyOnce &reply) {
-  std::vector<lsCodeLens> result;
+  std::vector<CodeLens> result;
   std::string path = param.textDocument.uri.GetPath();
 
   QueryFile *file = FindFile(reply, path);
@@ -95,9 +95,9 @@ void MessageHandler::textDocument_codeLens(TextDocumentParam &param,
     std::optional<lsRange> ls_range = GetLsRange(wfile, range);
     if (!ls_range)
       return;
-    lsCodeLens &code_lens = result.emplace_back();
+    CodeLens &code_lens = result.emplace_back();
     code_lens.range = *ls_range;
-    code_lens.command = lsCommand();
+    code_lens.command = Command();
     code_lens.command->command = std::string(ccls_xref);
     bool plural = num > 1 && singular[strlen(singular) - 1] != 'd';
     code_lens.command->title =
@@ -110,49 +110,49 @@ void MessageHandler::textDocument_codeLens(TextDocumentParam &param,
     if (refcnt <= 0 || !sym.extent.Valid() || !seen.insert(sym.range).second)
       continue;
     switch (sym.kind) {
-    case SymbolKind::Func: {
+    case Kind::Func: {
       QueryFunc &func = db->GetFunc(sym);
       const QueryFunc::Def *def = func.AnyDef();
       if (!def)
         continue;
       std::vector<Use> base_uses = GetUsesForAllBases(db, func);
       std::vector<Use> derived_uses = GetUsesForAllDerived(db, func);
-      Add("ref", {sym.usr, SymbolKind::Func, "uses"}, sym.range,
-          func.uses.size(), base_uses.empty());
+      Add("ref", {sym.usr, Kind::Func, "uses"}, sym.range, func.uses.size(),
+          base_uses.empty());
       if (base_uses.size())
-        Add("b.ref", {sym.usr, SymbolKind::Func, "bases uses"}, sym.range,
+        Add("b.ref", {sym.usr, Kind::Func, "bases uses"}, sym.range,
             base_uses.size());
       if (derived_uses.size())
-        Add("d.ref", {sym.usr, SymbolKind::Func, "derived uses"}, sym.range,
+        Add("d.ref", {sym.usr, Kind::Func, "derived uses"}, sym.range,
             derived_uses.size());
       if (base_uses.empty())
-        Add("base", {sym.usr, SymbolKind::Func, "bases"}, sym.range,
+        Add("base", {sym.usr, Kind::Func, "bases"}, sym.range,
             def->bases.size());
-      Add("derived", {sym.usr, SymbolKind::Func, "derived"}, sym.range,
+      Add("derived", {sym.usr, Kind::Func, "derived"}, sym.range,
           func.derived.size());
       break;
     }
-    case SymbolKind::Type: {
+    case Kind::Type: {
       QueryType &type = db->GetType(sym);
-      Add("ref", {sym.usr, SymbolKind::Type, "uses"}, sym.range,
-          type.uses.size(), true);
-      Add("derived", {sym.usr, SymbolKind::Type, "derived"}, sym.range,
+      Add("ref", {sym.usr, Kind::Type, "uses"}, sym.range, type.uses.size(),
+          true);
+      Add("derived", {sym.usr, Kind::Type, "derived"}, sym.range,
           type.derived.size());
-      Add("var", {sym.usr, SymbolKind::Type, "instances"}, sym.range,
+      Add("var", {sym.usr, Kind::Type, "instances"}, sym.range,
           type.instances.size());
       break;
     }
-    case SymbolKind::Var: {
+    case Kind::Var: {
       QueryVar &var = db->GetVar(sym);
       const QueryVar::Def *def = var.AnyDef();
       if (!def || (def->is_local() && !g_config->codeLens.localVariables))
         continue;
-      Add("ref", {sym.usr, SymbolKind::Var, "uses"}, sym.range, var.uses.size(),
-          def->kind != lsSymbolKind::Macro);
+      Add("ref", {sym.usr, Kind::Var, "uses"}, sym.range, var.uses.size(),
+          def->kind != SymbolKind::Macro);
       break;
     }
-    case SymbolKind::File:
-    case SymbolKind::Invalid:
+    case Kind::File:
+    case Kind::Invalid:
       llvm_unreachable("");
     };
   }
@@ -162,7 +162,7 @@ void MessageHandler::textDocument_codeLens(TextDocumentParam &param,
 
 void MessageHandler::workspace_executeCommand(Reader &reader,
                                               ReplyOnce &reply) {
-  lsCommand param;
+  Command param;
   Reflect(reader, param);
   if (param.arguments.empty()) {
     return;
@@ -173,14 +173,14 @@ void MessageHandler::workspace_executeCommand(Reader &reader,
   if (param.command == ccls_xref) {
     Cmd_xref cmd;
     Reflect(json_reader, cmd);
-    std::vector<lsLocation> result;
+    std::vector<Location> result;
     auto Map = [&](auto &&uses) {
       for (auto &use : uses)
         if (auto loc = GetLsLocation(db, wfiles, use))
           result.push_back(std::move(*loc));
     };
     switch (cmd.kind) {
-    case SymbolKind::Func: {
+    case Kind::Func: {
       QueryFunc &func = db->Func(cmd.usr);
       if (cmd.field == "bases") {
         if (auto *def = func.AnyDef())
@@ -196,7 +196,7 @@ void MessageHandler::workspace_executeCommand(Reader &reader,
       }
       break;
     }
-    case SymbolKind::Type: {
+    case Kind::Type: {
       QueryType &type = db->Type(cmd.usr);
       if (cmd.field == "derived") {
         Map(GetTypeDeclarations(db, type.derived));
@@ -207,7 +207,7 @@ void MessageHandler::workspace_executeCommand(Reader &reader,
       }
       break;
     }
-    case SymbolKind::Var: {
+    case Kind::Var: {
       QueryVar &var = db->Var(cmd.usr);
       if (cmd.field == "uses")
         Map(var.uses);
diff --git a/src/messages/textDocument_completion.cc b/src/messages/textDocument_completion.cc
index 6f85303c..c5e6f55e 100644
--- a/src/messages/textDocument_completion.cc
+++ b/src/messages/textDocument_completion.cc
@@ -18,21 +18,21 @@ namespace ccls {
 using namespace clang;
 using namespace llvm;
 
-struct lsCompletionList {
-  bool isIncomplete = false;
-  std::vector<lsCompletionItem> items;
-};
-
-MAKE_REFLECT_TYPE_PROXY(lsInsertTextFormat);
-MAKE_REFLECT_TYPE_PROXY(lsCompletionItemKind);
-MAKE_REFLECT_STRUCT(lsCompletionItem, label, kind, detail, documentation,
+MAKE_REFLECT_TYPE_PROXY(InsertTextFormat);
+MAKE_REFLECT_TYPE_PROXY(CompletionItemKind);
+MAKE_REFLECT_STRUCT(CompletionItem, label, kind, detail, documentation,
                     sortText, filterText, insertText, insertTextFormat,
                     textEdit, additionalTextEdits);
-MAKE_REFLECT_STRUCT(lsCompletionList, isIncomplete, items);
 
 namespace {
+struct CompletionList {
+  bool isIncomplete = false;
+  std::vector<CompletionItem> items;
+};
+MAKE_REFLECT_STRUCT(CompletionList, isIncomplete, items);
+
 void DecorateIncludePaths(const std::smatch &match,
-                          std::vector<lsCompletionItem> *items) {
+                          std::vector<CompletionItem> *items) {
   std::string spaces_after_include = " ";
   if (match[3].compare("include") == 0 && match[5].length())
     spaces_after_include = match[4].str();
@@ -41,7 +41,7 @@ void DecorateIncludePaths(const std::smatch &match,
       match[1].str() + '#' + match[2].str() + "include" + spaces_after_include;
   std::string suffix = match[7].str();
 
-  for (lsCompletionItem &item : *items) {
+  for (CompletionItem &item : *items) {
     char quote0, quote1;
     if (match[5].compare("<") == 0 ||
         (match[5].length() == 0 && item.use_angle_brackets_))
@@ -82,9 +82,9 @@ ParseIncludeLineResult ParseIncludeLine(const std::string &line) {
 // Pre-filters completion responses before sending to vscode. This results in a
 // significantly snappier completion experience as vscode is easily overloaded
 // when given 1000+ completion items.
-void FilterCandidates(lsCompletionList &result,
-                      const std::string &complete_text, lsPosition begin_pos,
-                      lsPosition end_pos, const std::string &buffer_line) {
+void FilterCandidates(CompletionList &result, const std::string &complete_text,
+                      lsPosition begin_pos, lsPosition end_pos,
+                      const std::string &buffer_line) {
   assert(begin_pos.line == end_pos.line);
   auto &items = result.items;
 
@@ -155,12 +155,12 @@ void FilterCandidates(lsCompletionList &result,
             : FuzzyMatcher::kMinScore;
   }
   items.erase(std::remove_if(items.begin(), items.end(),
-                             [](const lsCompletionItem &item) {
+                             [](const CompletionItem &item) {
                                return item.score_ <= FuzzyMatcher::kMinScore;
                              }),
               items.end());
   std::sort(items.begin(), items.end(),
-            [](const lsCompletionItem &lhs, const lsCompletionItem &rhs) {
+            [](const CompletionItem &lhs, const CompletionItem &rhs) {
               int t = int(lhs.additionalTextEdits.size() -
                           rhs.additionalTextEdits.size());
               if (t)
@@ -178,45 +178,45 @@ void FilterCandidates(lsCompletionList &result,
   finalize();
 }
 
-lsCompletionItemKind GetCompletionKind(CXCursorKind cursor_kind) {
+CompletionItemKind GetCompletionKind(CXCursorKind cursor_kind) {
   switch (cursor_kind) {
   case CXCursor_UnexposedDecl:
-    return lsCompletionItemKind::Text;
+    return CompletionItemKind::Text;
 
   case CXCursor_StructDecl:
   case CXCursor_UnionDecl:
-    return lsCompletionItemKind::Struct;
+    return CompletionItemKind::Struct;
   case CXCursor_ClassDecl:
-    return lsCompletionItemKind::Class;
+    return CompletionItemKind::Class;
   case CXCursor_EnumDecl:
-    return lsCompletionItemKind::Enum;
+    return CompletionItemKind::Enum;
   case CXCursor_FieldDecl:
-    return lsCompletionItemKind::Field;
+    return CompletionItemKind::Field;
   case CXCursor_EnumConstantDecl:
-    return lsCompletionItemKind::EnumMember;
+    return CompletionItemKind::EnumMember;
   case CXCursor_FunctionDecl:
-    return lsCompletionItemKind::Function;
+    return CompletionItemKind::Function;
   case CXCursor_VarDecl:
   case CXCursor_ParmDecl:
-    return lsCompletionItemKind::Variable;
+    return CompletionItemKind::Variable;
   case CXCursor_ObjCInterfaceDecl:
-    return lsCompletionItemKind::Interface;
+    return CompletionItemKind::Interface;
 
   case CXCursor_ObjCInstanceMethodDecl:
   case CXCursor_CXXMethod:
   case CXCursor_ObjCClassMethodDecl:
-    return lsCompletionItemKind::Method;
+    return CompletionItemKind::Method;
 
   case CXCursor_FunctionTemplate:
-    return lsCompletionItemKind::Function;
+    return CompletionItemKind::Function;
 
   case CXCursor_Constructor:
   case CXCursor_Destructor:
   case CXCursor_ConversionFunction:
-    return lsCompletionItemKind::Constructor;
+    return CompletionItemKind::Constructor;
 
   case CXCursor_ObjCIvarDecl:
-    return lsCompletionItemKind::Variable;
+    return CompletionItemKind::Variable;
 
   case CXCursor_ClassTemplate:
   case CXCursor_ClassTemplatePartialSpecialization:
@@ -228,50 +228,43 @@ lsCompletionItemKind GetCompletionKind(CXCursorKind cursor_kind) {
   case CXCursor_ObjCProtocolDecl:
   case CXCursor_ObjCImplementationDecl:
   case CXCursor_ObjCCategoryImplDecl:
-    return lsCompletionItemKind::Class;
+    return CompletionItemKind::Class;
 
   case CXCursor_ObjCPropertyDecl:
-    return lsCompletionItemKind::Property;
+    return CompletionItemKind::Property;
 
   case CXCursor_MacroInstantiation:
   case CXCursor_MacroDefinition:
-    return lsCompletionItemKind::Interface;
+    return CompletionItemKind::Interface;
 
   case CXCursor_Namespace:
   case CXCursor_NamespaceAlias:
   case CXCursor_NamespaceRef:
-    return lsCompletionItemKind::Module;
+    return CompletionItemKind::Module;
 
   case CXCursor_MemberRef:
   case CXCursor_TypeRef:
   case CXCursor_ObjCSuperClassRef:
   case CXCursor_ObjCProtocolRef:
   case CXCursor_ObjCClassRef:
-    return lsCompletionItemKind::Reference;
-
-    // return lsCompletionItemKind::Unit;
-    // return lsCompletionItemKind::Value;
-    // return lsCompletionItemKind::Keyword;
-    // return lsCompletionItemKind::Snippet;
-    // return lsCompletionItemKind::Color;
-    // return lsCompletionItemKind::File;
+    return CompletionItemKind::Reference;
 
   case CXCursor_NotImplemented:
   case CXCursor_OverloadCandidate:
-    return lsCompletionItemKind::Text;
+    return CompletionItemKind::Text;
 
   case CXCursor_TemplateTypeParameter:
   case CXCursor_TemplateTemplateParameter:
-    return lsCompletionItemKind::TypeParameter;
+    return CompletionItemKind::TypeParameter;
 
   default:
     LOG_S(WARNING) << "Unhandled completion kind " << cursor_kind;
-    return lsCompletionItemKind::Text;
+    return CompletionItemKind::Text;
   }
 }
 
 void BuildItem(const CodeCompletionResult &R, const CodeCompletionString &CCS,
-               std::vector<lsCompletionItem> &out) {
+               std::vector<CompletionItem> &out) {
   assert(!out.empty());
   auto first = out.size() - 1;
   bool ignore = false;
@@ -330,7 +323,7 @@ void BuildItem(const CodeCompletionResult &R, const CodeCompletionString &CCS,
         }
         out[i].textEdit.newText +=
             "${" + std::to_string(out[i].parameters_.size()) + ":" + text + "}";
-        out[i].insertTextFormat = lsInsertTextFormat::Snippet;
+        out[i].insertTextFormat = InsertTextFormat::Snippet;
       } else if (Kind != CodeCompletionString::CK_Informative) {
         out[i].textEdit.newText += text;
       }
@@ -352,7 +345,7 @@ class CompletionConsumer : public CodeCompleteConsumer {
 
 public:
   bool from_cache;
-  std::vector<lsCompletionItem> ls_items;
+  std::vector<CompletionItem> ls_items;
 
   CompletionConsumer(const CodeCompleteOptions &Opts, bool from_cache)
       : CodeCompleteConsumer(Opts, false),
@@ -384,7 +377,7 @@ public:
       CodeCompletionString *CCS = R.CreateCodeCompletionString(
           S, Context, getAllocator(), getCodeCompletionTUInfo(),
           includeBriefComments());
-      lsCompletionItem ls_item;
+      CompletionItem ls_item;
       ls_item.kind = GetCompletionKind(R.CursorKind);
       if (const char *brief = CCS->getBriefComment())
         ls_item.documentation = brief;
@@ -396,7 +389,7 @@ public:
 
       for (size_t j = first_idx; j < ls_items.size(); j++) {
         if (g_config->client.snippetSupport &&
-            ls_items[j].insertTextFormat == lsInsertTextFormat::Snippet)
+            ls_items[j].insertTextFormat == InsertTextFormat::Snippet)
           ls_items[j].textEdit.newText += "$0";
         ls_items[j].priority_ = CCS->getPriority();
         if (!g_config->completion.detailedLabel) {
@@ -407,7 +400,7 @@ public:
 #if LLVM_VERSION_MAJOR >= 7
       for (const FixItHint &FixIt : R.FixIts) {
         auto &AST = S.getASTContext();
-        lsTextEdit ls_edit =
+        TextEdit ls_edit =
             ccls::ToTextEdit(AST.getSourceManager(), AST.getLangOpts(), FixIt);
         for (size_t j = first_idx; j < ls_items.size(); j++)
           ls_items[j].additionalTextEdits.push_back(ls_edit);
@@ -421,10 +414,10 @@ public:
 };
 } // namespace
 
-void MessageHandler::textDocument_completion(lsCompletionParams &param,
+void MessageHandler::textDocument_completion(CompletionParam &param,
                                              ReplyOnce &reply) {
-  static CompleteConsumerCache<std::vector<lsCompletionItem>> cache;
-  lsCompletionList result;
+  static CompleteConsumerCache<std::vector<CompletionItem>> cache;
+  CompletionList result;
   std::string path = param.textDocument.uri.GetPath();
   WorkingFile *file = wfiles->GetFileByFilename(path);
   if (!file) {
@@ -440,7 +433,7 @@ void MessageHandler::textDocument_completion(lsCompletionParams &param,
 
   // Check for - and : before completing -> or ::, since vscode does not
   // support multi-character trigger characters.
-  if (param.context.triggerKind == lsCompletionTriggerKind::TriggerCharacter &&
+  if (param.context.triggerKind == CompletionTriggerKind::TriggerCharacter &&
       param.context.triggerCharacter) {
     bool did_fail_check = false;
 
@@ -484,7 +477,7 @@ void MessageHandler::textDocument_completion(lsCompletionParams &param,
   ParseIncludeLineResult preprocess = ParseIncludeLine(buffer_line);
 
   if (preprocess.ok && preprocess.keyword.compare("include") == 0) {
-    lsCompletionList result;
+    CompletionList result;
     {
       std::unique_lock<std::mutex> lock(
           include_complete->completion_items_mutex, std::defer_lock);
@@ -509,7 +502,7 @@ void MessageHandler::textDocument_completion(lsCompletionParams &param,
           if (!OptConsumer)
             return;
           auto *Consumer = static_cast<CompletionConsumer *>(OptConsumer);
-          lsCompletionList result;
+          CompletionList result;
           result.items = Consumer->ls_items;
 
           FilterCandidates(result, completion_text, begin_pos, end_pos,
diff --git a/src/messages/textDocument_definition.cc b/src/messages/textDocument_definition.cc
index 40f78e5f..300fcdd1 100644
--- a/src/messages/textDocument_definition.cc
+++ b/src/messages/textDocument_definition.cc
@@ -12,14 +12,14 @@ namespace ccls {
 namespace {
 std::vector<DeclRef> GetNonDefDeclarationTargets(DB *db, SymbolRef sym) {
   switch (sym.kind) {
-  case SymbolKind::Var: {
+  case Kind::Var: {
     std::vector<DeclRef> ret = GetNonDefDeclarations(db, sym);
     // If there is no declaration, jump to its type.
     if (ret.empty()) {
       for (auto &def : db->GetVar(sym).def)
         if (def.type) {
-          if (Maybe<DeclRef> use = GetDefinitionSpell(
-                  db, SymbolIdx{def.type, SymbolKind::Type})) {
+          if (Maybe<DeclRef> use =
+                  GetDefinitionSpell(db, SymbolIdx{def.type, Kind::Type})) {
             ret.push_back(*use);
             break;
           }
@@ -40,7 +40,7 @@ void MessageHandler::textDocument_definition(TextDocumentPositionParam &param,
   if (!file)
     return;
 
-  std::vector<lsLocation> result;
+  std::vector<Location> result;
   Maybe<Use> on_def;
   WorkingFile *wfile = wfiles->GetFileByFilename(file->def->path);
   lsPosition &ls_pos = param.position;
@@ -88,7 +88,7 @@ void MessageHandler::textDocument_definition(TextDocumentPositionParam &param,
     for (const IndexInclude &include : file->def->includes) {
       if (include.line == ls_pos.line) {
         result.push_back(
-            lsLocation{lsDocumentUri::FromPath(include.resolved_path)});
+            Location{DocumentUri::FromPath(include.resolved_path)});
         range = {{0, 0}, {0, 0}};
         break;
       }
@@ -110,7 +110,7 @@ void MessageHandler::textDocument_definition(TextDocumentPositionParam &param,
       // not in the same file, line distance> to find the best match.
       std::tuple<int, int, bool, int> best_score{INT_MAX, 0, true, 0};
       SymbolIdx best_sym;
-      best_sym.kind = SymbolKind::Invalid;
+      best_sym.kind = Kind::Invalid;
       auto fn = [&](SymbolIdx sym) {
         std::string_view short_name = db->GetSymbolName(sym, false),
                          name = short_query.size() < query.size()
@@ -136,14 +136,14 @@ void MessageHandler::textDocument_definition(TextDocumentPositionParam &param,
         }
       };
       for (auto &func : db->funcs)
-        fn({func.usr, SymbolKind::Func});
+        fn({func.usr, Kind::Func});
       for (auto &type : db->types)
-        fn({type.usr, SymbolKind::Type});
+        fn({type.usr, Kind::Type});
       for (auto &var : db->vars)
         if (var.def.size() && !var.def[0].is_local())
-          fn({var.usr, SymbolKind::Var});
+          fn({var.usr, Kind::Var});
 
-      if (best_sym.kind != SymbolKind::Invalid) {
+      if (best_sym.kind != Kind::Invalid) {
         Maybe<DeclRef> dr = GetDefinitionSpell(db, best_sym);
         assert(dr);
         if (auto loc = GetLsLocation(db, wfiles, *dr))
@@ -162,7 +162,7 @@ void MessageHandler::textDocument_typeDefinition(
     return;
   WorkingFile *working_file = wfiles->GetFileByFilename(file->def->path);
 
-  std::vector<lsLocation> result;
+  std::vector<Location> result;
   auto Add = [&](const QueryType &type) {
     for (const auto &def : type.def)
       if (def.spell) {
@@ -177,13 +177,13 @@ void MessageHandler::textDocument_typeDefinition(
   for (SymbolRef sym :
        FindSymbolsAtLocation(working_file, file, param.position)) {
     switch (sym.kind) {
-    case SymbolKind::Var: {
+    case Kind::Var: {
       const QueryVar::Def *def = db->GetVar(sym).AnyDef();
       if (def && def->type)
         Add(db->Type(def->type));
       break;
     }
-    case SymbolKind::Type: {
+    case Kind::Type: {
       for (auto &def : db->GetType(sym).def)
         if (def.alias_of) {
           Add(db->Type(def.alias_of));
diff --git a/src/messages/textDocument_document.cc b/src/messages/textDocument_document.cc
index b72dc13a..2b818617 100644
--- a/src/messages/textDocument_document.cc
+++ b/src/messages/textDocument_document.cc
@@ -10,7 +10,7 @@
 MAKE_HASHABLE(ccls::SymbolIdx, t.usr, t.kind);
 
 namespace ccls {
-MAKE_REFLECT_STRUCT(lsSymbolInformation, name, kind, location, containerName);
+MAKE_REFLECT_STRUCT(SymbolInformation, name, kind, location, containerName);
 
 namespace {
 struct DocumentHighlight {
@@ -45,7 +45,7 @@ void MessageHandler::textDocument_documentHighlight(
     if (refcnt <= 0)
       continue;
     Usr usr = sym.usr;
-    SymbolKind kind = sym.kind;
+    Kind kind = sym.kind;
     if (std::none_of(syms.begin(), syms.end(), [&](auto &sym1) {
           return usr == sym1.usr && kind == sym1.kind;
         }))
@@ -68,11 +68,11 @@ void MessageHandler::textDocument_documentHighlight(
 }
 
 namespace {
-struct lsDocumentLink {
+struct DocumentLink {
   lsRange range;
-  lsDocumentUri target;
+  DocumentUri target;
 };
-MAKE_REFLECT_STRUCT(lsDocumentLink, range, target);
+MAKE_REFLECT_STRUCT(DocumentLink, range, target);
 } // namespace
 
 void MessageHandler::textDocument_documentLink(TextDocumentParam &param,
@@ -81,10 +81,10 @@ void MessageHandler::textDocument_documentLink(TextDocumentParam &param,
   if (!file)
     return;
 
-  std::vector<lsDocumentLink> result;
+  std::vector<DocumentLink> result;
   for (const IndexInclude &include : file->def->includes)
     result.push_back({lsRange{{include.line, 0}, {include.line + 1, 0}},
-                      lsDocumentUri::FromPath(include.resolved_path)});
+                      DocumentUri::FromPath(include.resolved_path)});
   reply(result);
 } // namespace ccls
 
@@ -98,18 +98,18 @@ struct DocumentSymbolParam : TextDocumentParam {
 };
 MAKE_REFLECT_STRUCT(DocumentSymbolParam, textDocument, all, startLine, endLine);
 
-struct lsDocumentSymbol {
+struct DocumentSymbol {
   std::string name;
   std::string detail;
-  lsSymbolKind kind;
+  SymbolKind kind;
   lsRange range;
   lsRange selectionRange;
-  std::vector<std::unique_ptr<lsDocumentSymbol>> children;
+  std::vector<std::unique_ptr<DocumentSymbol>> children;
 };
-void Reflect(Writer &vis, std::unique_ptr<lsDocumentSymbol> &v);
-MAKE_REFLECT_STRUCT(lsDocumentSymbol, name, detail, kind, range, selectionRange,
+void Reflect(Writer &vis, std::unique_ptr<DocumentSymbol> &v);
+MAKE_REFLECT_STRUCT(DocumentSymbol, name, detail, kind, range, selectionRange,
                     children);
-void Reflect(Writer &vis, std::unique_ptr<lsDocumentSymbol> &v) {
+void Reflect(Writer &vis, std::unique_ptr<DocumentSymbol> &v) {
   Reflect(vis, *v);
 }
 
@@ -119,7 +119,7 @@ bool Ignore(const Def *def) {
 }
 template <>
 bool Ignore(const QueryType::Def *def) {
-  return !def || def->kind == lsSymbolKind::TypeParameter;
+  return !def || def->kind == SymbolKind::TypeParameter;
 }
 template<>
 bool Ignore(const QueryVar::Def *def) {
@@ -151,8 +151,8 @@ void MessageHandler::textDocument_documentSymbol(Reader &reader,
     std::sort(result.begin(), result.end());
     reply(result);
   } else if (g_config->client.hierarchicalDocumentSymbolSupport) {
-    std::unordered_map<SymbolIdx, std::unique_ptr<lsDocumentSymbol>> sym2ds;
-    std::vector<std::pair<std::vector<const void *>, lsDocumentSymbol *>> funcs,
+    std::unordered_map<SymbolIdx, std::unique_ptr<DocumentSymbol>> sym2ds;
+    std::vector<std::pair<std::vector<const void *>, DocumentSymbol *>> funcs,
         types;
     for (auto [sym, refcnt] : file->symbol2refcnt) {
       if (refcnt <= 0 || !sym.extent.Valid())
@@ -161,7 +161,7 @@ void MessageHandler::textDocument_documentSymbol(Reader &reader,
       if (!r.second)
         continue;
       auto &ds = r.first->second;
-      ds = std::make_unique<lsDocumentSymbol>();
+      ds = std::make_unique<DocumentSymbol>();
       std::vector<const void *> def_ptrs;
       WithEntity(db, sym, [&, sym = sym](const auto &entity) {
         auto *def = entity.AnyDef();
@@ -180,25 +180,25 @@ void MessageHandler::textDocument_documentSymbol(Reader &reader,
         for (auto &def : entity.def)
           if (def.file_id == file_id && !Ignore(&def)) {
             ds->kind = def.kind;
-            if (def.spell || def.kind == lsSymbolKind::Namespace)
+            if (def.spell || def.kind == SymbolKind::Namespace)
               def_ptrs.push_back(&def);
           }
       });
       if (def_ptrs.empty() || !(param.all || sym.role & Role::Definition ||
-                                ds->kind == lsSymbolKind::Namespace)) {
+                                ds->kind == SymbolKind::Namespace)) {
         ds.reset();
         continue;
       }
-      if (sym.kind == SymbolKind::Func)
+      if (sym.kind == Kind::Func)
         funcs.emplace_back(std::move(def_ptrs), ds.get());
-      else if (sym.kind == SymbolKind::Type)
+      else if (sym.kind == Kind::Type)
         types.emplace_back(std::move(def_ptrs), ds.get());
     }
 
     for (auto &[def_ptrs, ds] : funcs)
       for (const void *def_ptr : def_ptrs)
         for (Usr usr1 : ((const QueryFunc::Def *)def_ptr)->vars) {
-          auto it = sym2ds.find(SymbolIdx{usr1, SymbolKind::Var});
+          auto it = sym2ds.find(SymbolIdx{usr1, Kind::Var});
           if (it != sym2ds.end() && it->second)
             ds->children.push_back(std::move(it->second));
         }
@@ -206,37 +206,36 @@ void MessageHandler::textDocument_documentSymbol(Reader &reader,
       for (const void *def_ptr : def_ptrs) {
         auto *def = (const QueryType::Def *)def_ptr;
         for (Usr usr1 : def->funcs) {
-          auto it = sym2ds.find(SymbolIdx{usr1, SymbolKind::Func});
+          auto it = sym2ds.find(SymbolIdx{usr1, Kind::Func});
           if (it != sym2ds.end() && it->second)
             ds->children.push_back(std::move(it->second));
         }
         for (Usr usr1 : def->types) {
-          auto it = sym2ds.find(SymbolIdx{usr1, SymbolKind::Type});
+          auto it = sym2ds.find(SymbolIdx{usr1, Kind::Type});
           if (it != sym2ds.end() && it->second)
             ds->children.push_back(std::move(it->second));
         }
         for (auto [usr1, _] : def->vars) {
-          auto it = sym2ds.find(SymbolIdx{usr1, SymbolKind::Var});
+          auto it = sym2ds.find(SymbolIdx{usr1, Kind::Var});
           if (it != sym2ds.end() && it->second)
             ds->children.push_back(std::move(it->second));
         }
       }
-    std::vector<std::unique_ptr<lsDocumentSymbol>> result;
+    std::vector<std::unique_ptr<DocumentSymbol>> result;
     for (auto &[_, ds] : sym2ds)
       if (ds)
         result.push_back(std::move(ds));
     reply(result);
   } else {
-    std::vector<lsSymbolInformation> result;
+    std::vector<SymbolInformation> result;
     for (auto [sym, refcnt] : file->symbol2refcnt) {
       if (refcnt <= 0 || !sym.extent.Valid() ||
           !(param.all || sym.role & Role::Definition))
         continue;
-      if (std::optional<lsSymbolInformation> info =
+      if (std::optional<SymbolInformation> info =
               GetSymbolInfo(db, sym, false)) {
-        if ((sym.kind == SymbolKind::Type &&
-             Ignore(db->GetType(sym).AnyDef())) ||
-            (sym.kind == SymbolKind::Var && Ignore(db->GetVar(sym).AnyDef())))
+        if ((sym.kind == Kind::Type && Ignore(db->GetType(sym).AnyDef())) ||
+            (sym.kind == Kind::Var && Ignore(db->GetVar(sym).AnyDef())))
           continue;
         if (auto loc = GetLsLocation(db, wfiles, sym, file_id)) {
           info->location = *loc;
diff --git a/src/messages/textDocument_foldingRange.cc b/src/messages/textDocument_foldingRange.cc
index 19258e25..a8a19596 100644
--- a/src/messages/textDocument_foldingRange.cc
+++ b/src/messages/textDocument_foldingRange.cc
@@ -30,7 +30,7 @@ void MessageHandler::textDocument_foldingRange(TextDocumentParam &param,
 
   for (auto [sym, refcnt] : file->symbol2refcnt)
     if (refcnt > 0 && sym.extent.Valid() &&
-        (sym.kind == SymbolKind::Func || sym.kind == SymbolKind::Type) &&
+        (sym.kind == Kind::Func || sym.kind == Kind::Type) &&
         (ls_range = GetLsRange(wfile, sym.extent))) {
       FoldingRange &fold = result.emplace_back();
       fold.startLine = ls_range->start.line;
diff --git a/src/messages/textDocument_formatting.cc b/src/messages/textDocument_formatting.cc
index f81c675f..19f99dc0 100644
--- a/src/messages/textDocument_formatting.cc
+++ b/src/messages/textDocument_formatting.cc
@@ -29,9 +29,9 @@ FormatCode(std::string_view code, std::string_view file, tooling::Range Range) {
       File));
 }
 
-std::vector<lsTextEdit>
-ReplacementsToEdits(std::string_view code, const tooling::Replacements &Repls) {
-  std::vector<lsTextEdit> ret;
+std::vector<TextEdit> ReplacementsToEdits(std::string_view code,
+                                          const tooling::Replacements &Repls) {
+  std::vector<TextEdit> ret;
   int i = 0, line = 0, col = 0;
   auto move = [&](int p) {
     for (; i < p; i++)
@@ -62,8 +62,8 @@ void Format(ReplyOnce &reply, WorkingFile *wfile, tooling::Range range) {
     auto result = ReplacementsToEdits(code, *ReplsOrErr);
     reply(result);
   } else {
-    lsResponseError err;
-    err.code = lsErrorCodes::UnknownErrorCode;
+    ResponseError err;
+    err.code = ErrorCode::UnknownErrorCode;
     err.message = llvm::toString(ReplsOrErr.takeError());
     reply.Error(err);
   }
diff --git a/src/messages/textDocument_hover.cc b/src/messages/textDocument_hover.cc
index b9c4d707..55644604 100644
--- a/src/messages/textDocument_hover.cc
+++ b/src/messages/textDocument_hover.cc
@@ -6,16 +6,16 @@
 
 namespace ccls {
 namespace {
-struct lsMarkedString {
+struct MarkedString {
   std::optional<std::string> language;
   std::string value;
 };
 struct Hover {
-  std::vector<lsMarkedString> contents;
+  std::vector<MarkedString> contents;
   std::optional<lsRange> range;
 };
 
-void Reflect(Writer &visitor, lsMarkedString &value) {
+void Reflect(Writer &visitor, MarkedString &value) {
   // If there is a language, emit a `{language:string, value:string}` object. If
   // not, emit a string.
   if (value.language) {
@@ -42,10 +42,10 @@ const char *LanguageIdentifier(LanguageId lang) {
 }
 
 // Returns the hover or detailed name for `sym`, if any.
-std::pair<std::optional<lsMarkedString>, std::optional<lsMarkedString>>
+std::pair<std::optional<MarkedString>, std::optional<MarkedString>>
 GetHover(DB *db, LanguageId lang, SymbolRef sym, int file_id) {
   const char *comments = nullptr;
-  std::optional<lsMarkedString> ls_comments, hover;
+  std::optional<MarkedString> ls_comments, hover;
   WithEntity(db, sym, [&](const auto &entity) {
     std::remove_reference_t<decltype(entity.def[0])> *def = nullptr;
     for (auto &d : entity.def) {
@@ -62,7 +62,7 @@ GetHover(DB *db, LanguageId lang, SymbolRef sym, int file_id) {
         comments = def->comments;
     }
     if (def) {
-      lsMarkedString m;
+      MarkedString m;
       m.language = LanguageIdentifier(lang);
       if (def->hover[0]) {
         m.value = def->hover;
@@ -72,7 +72,7 @@ GetHover(DB *db, LanguageId lang, SymbolRef sym, int file_id) {
         hover = m;
       }
       if (comments)
-        ls_comments = lsMarkedString{std::nullopt, comments};
+        ls_comments = MarkedString{std::nullopt, comments};
     }
   });
   return {hover, ls_comments};
diff --git a/src/messages/textDocument_references.cc b/src/messages/textDocument_references.cc
index 3596113d..ed66379c 100644
--- a/src/messages/textDocument_references.cc
+++ b/src/messages/textDocument_references.cc
@@ -41,7 +41,7 @@ void MessageHandler::textDocument_references(Reader &reader, ReplyOnce &reply) {
   for (auto &folder : param.folders)
     EnsureEndsInSlash(folder);
   std::vector<uint8_t> file_set = db->GetFileSet(param.folders);
-  std::vector<lsLocation> result;
+  std::vector<Location> result;
 
   std::unordered_set<Use> seen_uses;
   int line = param.position.line;
@@ -51,12 +51,12 @@ void MessageHandler::textDocument_references(Reader &reader, ReplyOnce &reply) {
     std::unordered_set<Usr> seen;
     seen.insert(sym.usr);
     std::vector<Usr> stack{sym.usr};
-    if (sym.kind != SymbolKind::Func)
+    if (sym.kind != Kind::Func)
       param.base = false;
     while (stack.size()) {
       sym.usr = stack.back();
       stack.pop_back();
-      auto fn = [&](Use use, lsSymbolKind parent_kind) {
+      auto fn = [&](Use use, SymbolKind parent_kind) {
         if (file_set[use.file_id] &&
             Role(use.role & param.role) == param.role &&
             !(use.role & param.excludeRole) && seen_uses.insert(use).second)
@@ -64,7 +64,7 @@ void MessageHandler::textDocument_references(Reader &reader, ReplyOnce &reply) {
             result.push_back(*loc);
       };
       WithEntity(db, sym, [&](const auto &entity) {
-        lsSymbolKind parent_kind = lsSymbolKind::Unknown;
+        SymbolKind parent_kind = SymbolKind::Unknown;
         for (auto &def : entity.def)
           if (def.spell) {
             parent_kind = GetSymbolKind(db, sym);
@@ -108,8 +108,8 @@ void MessageHandler::textDocument_references(Reader &reader, ReplyOnce &reply) {
           for (const IndexInclude &include : file1.def->includes)
             if (include.resolved_path == path) {
               // Another file |file1| has the same include line.
-              lsLocation &loc = result.emplace_back();
-              loc.uri = lsDocumentUri::FromPath(file1.def->path);
+              Location &loc = result.emplace_back();
+              loc.uri = DocumentUri::FromPath(file1.def->path);
               loc.range.start.line = loc.range.end.line = include.line;
               break;
             }
diff --git a/src/messages/textDocument_rename.cc b/src/messages/textDocument_rename.cc
index f241e8b9..d49e2e4a 100644
--- a/src/messages/textDocument_rename.cc
+++ b/src/messages/textDocument_rename.cc
@@ -6,32 +6,32 @@
 
 namespace ccls {
 namespace {
-lsWorkspaceEdit BuildWorkspaceEdit(DB *db, WorkingFiles *wfiles, SymbolRef sym,
-                                   const std::string &new_text) {
-  std::unordered_map<int, lsTextDocumentEdit> path_to_edit;
+WorkspaceEdit BuildWorkspaceEdit(DB *db, WorkingFiles *wfiles, SymbolRef sym,
+                                 const std::string &new_text) {
+  std::unordered_map<int, TextDocumentEdit> path_to_edit;
 
   EachOccurrence(db, sym, true, [&](Use use) {
-    std::optional<lsLocation> ls_location = GetLsLocation(db, wfiles, use);
+    std::optional<Location> ls_location = GetLsLocation(db, wfiles, use);
     if (!ls_location)
       return;
 
     int file_id = use.file_id;
     if (path_to_edit.find(file_id) == path_to_edit.end()) {
-      path_to_edit[file_id] = lsTextDocumentEdit();
+      path_to_edit[file_id] = TextDocumentEdit();
 
       QueryFile &file = db->files[file_id];
       if (!file.def)
         return;
 
       const std::string &path = file.def->path;
-      path_to_edit[file_id].textDocument.uri = lsDocumentUri::FromPath(path);
+      path_to_edit[file_id].textDocument.uri = DocumentUri::FromPath(path);
 
       WorkingFile *working_file = wfiles->GetFileByFilename(path);
       if (working_file)
         path_to_edit[file_id].textDocument.version = working_file->version;
     }
 
-    lsTextEdit edit;
+    TextEdit edit;
     edit.range = ls_location->range;
     edit.newText = new_text;
 
@@ -41,7 +41,7 @@ lsWorkspaceEdit BuildWorkspaceEdit(DB *db, WorkingFiles *wfiles, SymbolRef sym,
       edits.push_back(edit);
   });
 
-  lsWorkspaceEdit edit;
+  WorkspaceEdit edit;
   for (const auto &changes : path_to_edit)
     edit.documentChanges.push_back(changes.second);
   return edit;
@@ -55,7 +55,7 @@ void MessageHandler::textDocument_rename(RenameParam &param, ReplyOnce &reply) {
     return;
 
   WorkingFile *wfile = wfiles->GetFileByFilename(file->def->path);
-  lsWorkspaceEdit result;
+  WorkspaceEdit result;
   for (SymbolRef sym : FindSymbolsAtLocation(wfile, file, param.position)) {
     result = BuildWorkspaceEdit(db, wfiles, sym, param.newName);
     break;
diff --git a/src/messages/textDocument_signatureHelp.cc b/src/messages/textDocument_signatureHelp.cc
index dd995340..bc7a6bff 100644
--- a/src/messages/textDocument_signatureHelp.cc
+++ b/src/messages/textDocument_signatureHelp.cc
@@ -19,14 +19,14 @@ struct SignatureInformation {
   std::optional<std::string> documentation;
   std::vector<ParameterInformation> parameters;
 };
-struct lsSignatureHelp {
+struct SignatureHelp {
   std::vector<SignatureInformation> signatures;
   int activeSignature = 0;
   int activeParameter = 0;
 };
 MAKE_REFLECT_STRUCT(ParameterInformation, label);
 MAKE_REFLECT_STRUCT(SignatureInformation, label, documentation, parameters);
-MAKE_REFLECT_STRUCT(lsSignatureHelp, signatures, activeSignature,
+MAKE_REFLECT_STRUCT(SignatureHelp, signatures, activeSignature,
                     activeParameter);
 
 std::string BuildOptional(const CodeCompletionString &CCS,
@@ -64,7 +64,7 @@ class SignatureHelpConsumer : public CodeCompleteConsumer {
   CodeCompletionTUInfo CCTUInfo;
 public:
   bool from_cache;
-  lsSignatureHelp ls_sighelp;
+  SignatureHelp ls_sighelp;
   SignatureHelpConsumer(const clang::CodeCompleteOptions &CCOpts,
                         bool from_cache)
       : CodeCompleteConsumer(CCOpts, false),
@@ -140,7 +140,7 @@ public:
 
 void MessageHandler::textDocument_signatureHelp(
     TextDocumentPositionParam &param, ReplyOnce &reply) {
-  static CompleteConsumerCache<lsSignatureHelp> cache;
+  static CompleteConsumerCache<SignatureHelp> cache;
 
   std::string path = param.textDocument.uri.GetPath();
   lsPosition begin_pos = param.position;
diff --git a/src/messages/workspace.cc b/src/messages/workspace.cc
index 0abcd06c..4ac5b8bd 100644
--- a/src/messages/workspace.cc
+++ b/src/messages/workspace.cc
@@ -18,12 +18,12 @@
 #include <limits.h>
 
 namespace ccls {
-MAKE_REFLECT_STRUCT(lsSymbolInformation, name, kind, location, containerName);
+MAKE_REFLECT_STRUCT(SymbolInformation, name, kind, location, containerName);
 
 void MessageHandler::workspace_didChangeConfiguration(EmptyParam &) {
   for (const std::string &folder : g_config->workspaceFolders)
     project->Load(folder);
-  project->Index(wfiles, lsRequestId());
+  project->Index(wfiles, RequestId());
 
   clang_complete->FlushAllSessions();
 };
@@ -77,7 +77,7 @@ void MessageHandler::workspace_didChangeWorkspaceFolders(
     project->Load(root);
   }
 
-  project->Index(wfiles, lsRequestId());
+  project->Index(wfiles, RequestId());
 
   clang_complete->FlushAllSessions();
 }
@@ -87,8 +87,8 @@ namespace {
 bool AddSymbol(
     DB *db, WorkingFiles *wfiles, const std::vector<uint8_t> &file_set,
     SymbolIdx sym, bool use_detailed,
-    std::vector<std::tuple<lsSymbolInformation, int, SymbolIdx>> *result) {
-  std::optional<lsSymbolInformation> info = GetSymbolInfo(db, sym, true);
+    std::vector<std::tuple<SymbolInformation, int, SymbolIdx>> *result) {
+  std::optional<SymbolInformation> info = GetSymbolInfo(db, sym, true);
   if (!info)
     return false;
 
@@ -113,7 +113,7 @@ bool AddSymbol(
   if (!in_folder)
     return false;
 
-  std::optional<lsLocation> ls_location = GetLsLocation(db, wfiles, *dr);
+  std::optional<Location> ls_location = GetLsLocation(db, wfiles, *dr);
   if (!ls_location)
     return false;
   info->location = *ls_location;
@@ -124,14 +124,14 @@ bool AddSymbol(
 
 void MessageHandler::workspace_symbol(WorkspaceSymbolParam &param,
                                       ReplyOnce &reply) {
-  std::vector<lsSymbolInformation> result;
+  std::vector<SymbolInformation> result;
   const std::string &query = param.query;
   for (auto &folder : param.folders)
     EnsureEndsInSlash(folder);
   std::vector<uint8_t> file_set = db->GetFileSet(param.folders);
 
   // {symbol info, matching detailed_name or short_name, index}
-  std::vector<std::tuple<lsSymbolInformation, int, SymbolIdx>> cands;
+  std::vector<std::tuple<SymbolInformation, int, SymbolIdx>> cands;
   bool sensitive = g_config->workspaceSymbol.caseSensitivity;
 
   // Find subsequence matches.
@@ -151,14 +151,13 @@ void MessageHandler::workspace_symbol(WorkspaceSymbolParam &param,
            cands.size() >= g_config->workspaceSymbol.maxNum;
   };
   for (auto &func : db->funcs)
-    if (Add({func.usr, SymbolKind::Func}))
+    if (Add({func.usr, Kind::Func}))
       goto done_add;
   for (auto &type : db->types)
-    if (Add({type.usr, SymbolKind::Type}))
+    if (Add({type.usr, Kind::Type}))
       goto done_add;
   for (auto &var : db->vars)
-    if (var.def.size() && !var.def[0].is_local() &&
-        Add({var.usr, SymbolKind::Var}))
+    if (var.def.size() && !var.def[0].is_local() && Add({var.usr, Kind::Var}))
       goto done_add;
 done_add:
 
diff --git a/src/pipeline.cc b/src/pipeline.cc
index 3f1b8dc7..f27d210f 100644
--- a/src/pipeline.cc
+++ b/src/pipeline.cc
@@ -33,6 +33,14 @@ using namespace llvm;
 #endif
 
 namespace ccls {
+namespace {
+struct PublishDiagnosticParam {
+  DocumentUri uri;
+  std::vector<Diagnostic> diagnostics;
+};
+MAKE_REFLECT_STRUCT(PublishDiagnosticParam, uri, diagnostics);
+} // namespace
+
 void VFS::Clear() {
   std::lock_guard lock(mutex);
   state.clear();
@@ -69,7 +77,7 @@ struct Index_Request {
   std::string path;
   std::vector<const char *> args;
   IndexMode mode;
-  lsRequestId id;
+  RequestId id;
   int64_t ts = tick++;
 };
 
@@ -291,8 +299,8 @@ bool Indexer_Parse(CompletionManager *completion, WorkingFiles *wfiles,
 
   if (!ok) {
     if (request.id.Valid()) {
-      lsResponseError err;
-      err.code = lsErrorCodes::InternalError;
+      ResponseError err;
+      err.code = ErrorCode::InternalError;
       err.message = "failed to index " + path_to_index;
       pipeline::ReplyError(request.id, err);
     }
@@ -441,7 +449,7 @@ void LaunchStdin() {
       if (!reader.HasMember("jsonrpc") ||
           std::string(reader["jsonrpc"]->GetString()) != "2.0")
         return;
-      lsRequestId id;
+      RequestId id;
       std::string method;
       ReflectMember(reader, "id", id);
       ReflectMember(reader, "method", method);
@@ -479,16 +487,16 @@ void MainLoop() {
 
   CompletionManager clang_complete(
       &project, &wfiles,
-      [&](std::string path, std::vector<lsDiagnostic> diagnostics) {
-        lsPublishDiagnosticsParams params;
-        params.uri = lsDocumentUri::FromPath(path);
+      [&](std::string path, std::vector<Diagnostic> diagnostics) {
+        PublishDiagnosticParam params;
+        params.uri = DocumentUri::FromPath(path);
         params.diagnostics = diagnostics;
         Notify("textDocument/publishDiagnostics", params);
       },
-      [](lsRequestId id) {
+      [](RequestId id) {
         if (id.Valid()) {
-          lsResponseError err;
-          err.code = lsErrorCodes::InternalError;
+          ResponseError err;
+          err.code = ErrorCode::InternalError;
           err.message = "drop older completion request";
           ReplyError(id, err);
         }
@@ -572,7 +580,7 @@ void Standalone(const std::string &root) {
 }
 
 void Index(const std::string &path, const std::vector<const char *> &args,
-           IndexMode mode, lsRequestId id) {
+           IndexMode mode, RequestId id) {
   pending_index_requests++;
   index_request->PushBack({path, args, mode, id}, mode != IndexMode::NonInteractive);
 }
@@ -603,7 +611,7 @@ void Notify(const char *method, const std::function<void(Writer &)> &fn) {
   for_stdout->PushBack(output.GetString());
 }
 
-static void Reply(lsRequestId id, const char *key,
+static void Reply(RequestId id, const char *key,
                   const std::function<void(Writer &)> &fn) {
   rapidjson::StringBuffer output;
   rapidjson::Writer<rapidjson::StringBuffer> w(output);
@@ -612,13 +620,13 @@ static void Reply(lsRequestId id, const char *key,
   w.String("2.0");
   w.Key("id");
   switch (id.type) {
-  case lsRequestId::kNone:
+  case RequestId::kNone:
     w.Null();
     break;
-  case lsRequestId::kInt:
+  case RequestId::kInt:
     w.Int(id.value);
     break;
-  case lsRequestId::kString:
+  case RequestId::kString:
     auto s = std::to_string(id.value);
     w.String(s.c_str(), s.length());
     break;
@@ -630,11 +638,11 @@ static void Reply(lsRequestId id, const char *key,
   for_stdout->PushBack(output.GetString());
 }
 
-void Reply(lsRequestId id, const std::function<void(Writer &)> &fn) {
+void Reply(RequestId id, const std::function<void(Writer &)> &fn) {
   Reply(id, "result", fn);
 }
 
-void ReplyError(lsRequestId id, const std::function<void(Writer &)> &fn) {
+void ReplyError(RequestId id, const std::function<void(Writer &)> &fn) {
   Reply(id, "error", fn);
 }
 } // namespace pipeline
diff --git a/src/pipeline.hh b/src/pipeline.hh
index 476eb0aa..86eae6c2 100644
--- a/src/pipeline.hh
+++ b/src/pipeline.hh
@@ -50,7 +50,7 @@ void MainLoop();
 void Standalone(const std::string &root);
 
 void Index(const std::string &path, const std::vector<const char *> &args,
-           IndexMode mode, lsRequestId id = {});
+           IndexMode mode, RequestId id = {});
 
 std::optional<std::string> LoadIndexedContent(const std::string& path);
 
@@ -59,10 +59,10 @@ template <typename T> void Notify(const char *method, T &result) {
   Notify(method, [&](Writer &w) { Reflect(w, result); });
 }
 
-void Reply(lsRequestId id, const std::function<void(Writer &)> &fn);
+void Reply(RequestId id, const std::function<void(Writer &)> &fn);
 
-void ReplyError(lsRequestId id, const std::function<void(Writer &)> &fn);
-template <typename T> void ReplyError(lsRequestId id, T &result) {
+void ReplyError(RequestId id, const std::function<void(Writer &)> &fn);
+template <typename T> void ReplyError(RequestId id, T &result) {
   ReplyError(id, [&](Writer &w) { Reflect(w, result); });
 }
 } // namespace pipeline
diff --git a/src/project.cc b/src/project.cc
index 54248750..d431d6ce 100644
--- a/src/project.cc
+++ b/src/project.cc
@@ -451,7 +451,7 @@ Project::Entry Project::FindEntry(const std::string &path,
   return result;
 }
 
-void Project::Index(WorkingFiles *wfiles, lsRequestId id) {
+void Project::Index(WorkingFiles *wfiles, RequestId id) {
   auto &gi = g_config->index;
   GroupMatch match(gi.whitelist, gi.blacklist),
       match_i(gi.initialWhitelist, gi.initialBlacklist);
diff --git a/src/project.hh b/src/project.hh
index b176f24f..1b14afaf 100644
--- a/src/project.hh
+++ b/src/project.hh
@@ -63,6 +63,6 @@ struct Project {
   void SetArgsForFile(const std::vector<const char *> &args,
                       const std::string &path);
 
-  void Index(WorkingFiles *wfiles, lsRequestId id);
+  void Index(WorkingFiles *wfiles, RequestId id);
 };
 } // namespace ccls
diff --git a/src/query.cc b/src/query.cc
index f51e8726..248a61cc 100644
--- a/src/query.cc
+++ b/src/query.cc
@@ -146,10 +146,10 @@ void DB::clear() {
 }
 
 template <typename Def>
-void DB::RemoveUsrs(SymbolKind kind, int file_id,
+void DB::RemoveUsrs(Kind kind, int file_id,
                     const std::vector<std::pair<Usr, Def>> &to_remove) {
   switch (kind) {
-  case SymbolKind::Func: {
+  case Kind::Func: {
     for (auto &[usr, _] : to_remove) {
       // FIXME
       if (!HasFunc(usr))
@@ -163,7 +163,7 @@ void DB::RemoveUsrs(SymbolKind kind, int file_id,
     }
     break;
   }
-  case SymbolKind::Type: {
+  case Kind::Type: {
     for (auto &[usr, _] : to_remove) {
       // FIXME
       if (!HasType(usr))
@@ -177,7 +177,7 @@ void DB::RemoveUsrs(SymbolKind kind, int file_id,
     }
     break;
   }
-  case SymbolKind::Var: {
+  case Kind::Var: {
     for (auto &[usr, _] : to_remove) {
       // FIXME
       if (!HasVar(usr))
@@ -220,8 +220,8 @@ void DB::ApplyIndexUpdate(IndexUpdate *u) {
   }
 
   // References (Use &use) in this function are important to update file_id.
-  auto Ref = [&](std::unordered_map<int, int> &lid2fid, Usr usr,
-                 SymbolKind kind, Use &use, int delta) {
+  auto Ref = [&](std::unordered_map<int, int> &lid2fid, Usr usr, Kind kind,
+                 Use &use, int delta) {
     use.file_id =
         use.file_id == -1 ? u->file_id : lid2fid.find(use.file_id)->second;
     ExtentRef sym{{use.range, usr, kind, use.role}};
@@ -231,8 +231,8 @@ void DB::ApplyIndexUpdate(IndexUpdate *u) {
     if (!v)
       files[use.file_id].symbol2refcnt.erase(sym);
   };
-  auto RefDecl = [&](std::unordered_map<int, int> &lid2fid, Usr usr,
-                     SymbolKind kind, DeclRef &dr, int delta) {
+  auto RefDecl = [&](std::unordered_map<int, int> &lid2fid, Usr usr, Kind kind,
+                     DeclRef &dr, int delta) {
     dr.file_id =
         dr.file_id == -1 ? u->file_id : lid2fid.find(dr.file_id)->second;
     ExtentRef sym{{dr.range, usr, kind, dr.role}, dr.extent};
@@ -244,7 +244,7 @@ void DB::ApplyIndexUpdate(IndexUpdate *u) {
   };
 
   auto UpdateUses =
-      [&](Usr usr, SymbolKind kind,
+      [&](Usr usr, Kind kind,
           llvm::DenseMap<Usr, int, DenseMapInfoForUsr> &entity_usr,
           auto &entities, auto &p, bool hint_implicit) {
         auto R = entity_usr.try_emplace(usr, entity_usr.size());
@@ -291,19 +291,19 @@ void DB::ApplyIndexUpdate(IndexUpdate *u) {
   }
   for (auto &[usr, def] : u->funcs_removed)
     if (def.spell)
-      RefDecl(prev_lid2file_id, usr, SymbolKind::Func, *def.spell, -1);
-  RemoveUsrs(SymbolKind::Func, u->file_id, u->funcs_removed);
+      RefDecl(prev_lid2file_id, usr, Kind::Func, *def.spell, -1);
+  RemoveUsrs(Kind::Func, u->file_id, u->funcs_removed);
   Update(lid2file_id, u->file_id, std::move(u->funcs_def_update));
   for (auto &[usr, del_add]: u->funcs_declarations) {
     for (DeclRef &dr : del_add.first)
-      RefDecl(prev_lid2file_id, usr, SymbolKind::Func, dr, -1);
+      RefDecl(prev_lid2file_id, usr, Kind::Func, dr, -1);
     for (DeclRef &dr : del_add.second)
-      RefDecl(lid2file_id, usr, SymbolKind::Func, dr, 1);
+      RefDecl(lid2file_id, usr, Kind::Func, dr, 1);
   }
   REMOVE_ADD(func, declarations);
   REMOVE_ADD(func, derived);
   for (auto &[usr, p] : u->funcs_uses)
-    UpdateUses(usr, SymbolKind::Func, func_usr, funcs, p, true);
+    UpdateUses(usr, Kind::Func, func_usr, funcs, p, true);
 
   if ((t = types.size() + u->types_hint) > types.capacity()) {
     t = size_t(t * grow);
@@ -312,20 +312,20 @@ void DB::ApplyIndexUpdate(IndexUpdate *u) {
   }
   for (auto &[usr, def] : u->types_removed)
     if (def.spell)
-      RefDecl(prev_lid2file_id, usr, SymbolKind::Type, *def.spell, -1);
-  RemoveUsrs(SymbolKind::Type, u->file_id, u->types_removed);
+      RefDecl(prev_lid2file_id, usr, Kind::Type, *def.spell, -1);
+  RemoveUsrs(Kind::Type, u->file_id, u->types_removed);
   Update(lid2file_id, u->file_id, std::move(u->types_def_update));
   for (auto &[usr, del_add]: u->types_declarations) {
     for (DeclRef &dr : del_add.first)
-      RefDecl(prev_lid2file_id, usr, SymbolKind::Type, dr, -1);
+      RefDecl(prev_lid2file_id, usr, Kind::Type, dr, -1);
     for (DeclRef &dr : del_add.second)
-      RefDecl(lid2file_id, usr, SymbolKind::Type, dr, 1);
+      RefDecl(lid2file_id, usr, Kind::Type, dr, 1);
   }
   REMOVE_ADD(type, declarations);
   REMOVE_ADD(type, derived);
   REMOVE_ADD(type, instances);
   for (auto &[usr, p] : u->types_uses)
-    UpdateUses(usr, SymbolKind::Type, type_usr, types, p, false);
+    UpdateUses(usr, Kind::Type, type_usr, types, p, false);
 
   if ((t = vars.size() + u->vars_hint) > vars.capacity()) {
     t = size_t(t * grow);
@@ -334,18 +334,18 @@ void DB::ApplyIndexUpdate(IndexUpdate *u) {
   }
   for (auto &[usr, def] : u->vars_removed)
     if (def.spell)
-      RefDecl(prev_lid2file_id, usr, SymbolKind::Var, *def.spell, -1);
-  RemoveUsrs(SymbolKind::Var, u->file_id, u->vars_removed);
+      RefDecl(prev_lid2file_id, usr, Kind::Var, *def.spell, -1);
+  RemoveUsrs(Kind::Var, u->file_id, u->vars_removed);
   Update(lid2file_id, u->file_id, std::move(u->vars_def_update));
   for (auto &[usr, del_add]: u->vars_declarations) {
     for (DeclRef &dr : del_add.first)
-      RefDecl(prev_lid2file_id, usr, SymbolKind::Var, dr, -1);
+      RefDecl(prev_lid2file_id, usr, Kind::Var, dr, -1);
     for (DeclRef &dr : del_add.second)
-      RefDecl(lid2file_id, usr, SymbolKind::Var, dr, 1);
+      RefDecl(lid2file_id, usr, Kind::Var, dr, 1);
   }
   REMOVE_ADD(var, declarations);
   for (auto &[usr, p] : u->vars_uses)
-    UpdateUses(usr, SymbolKind::Var, var_usr, vars, p, false);
+    UpdateUses(usr, Kind::Var, var_usr, vars, p, false);
 
 #undef REMOVE_ADD
 }
@@ -374,7 +374,7 @@ 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, Kind::Func, def.spell->role},
           def.spell->extent}]++;
     }
 
@@ -397,7 +397,7 @@ 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, Kind::Type, def.spell->role},
           def.spell->extent}]++;
     }
     auto R = type_usr.try_emplace({u.first}, type_usr.size());
@@ -419,7 +419,7 @@ 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, Kind::Var, def.spell->role},
           def.spell->extent}]++;
     }
     auto R = var_usr.try_emplace({u.first}, var_usr.size());
@@ -437,19 +437,19 @@ std::string_view DB::GetSymbolName(SymbolIdx sym, bool qualified) {
   switch (sym.kind) {
   default:
     break;
-  case SymbolKind::File:
+  case Kind::File:
     if (files[usr].def)
       return files[usr].def->path;
     break;
-  case SymbolKind::Func:
+  case Kind::Func:
     if (const auto *def = Func(usr).AnyDef())
       return def->Name(qualified);
     break;
-  case SymbolKind::Type:
+  case Kind::Type:
     if (const auto *def = Type(usr).AnyDef())
       return def->Name(qualified);
     break;
-  case SymbolKind::Var:
+  case Kind::Var:
     if (const auto *def = Var(usr).AnyDef())
       return def->Name(qualified);
     break;
diff --git a/src/query.hh b/src/query.hh
index 88af54dd..3dbc1fe4 100644
--- a/src/query.hh
+++ b/src/query.hh
@@ -157,7 +157,7 @@ struct DB {
   void clear();
 
   template <typename Def>
-  void RemoveUsrs(SymbolKind kind, int file_id,
+  void RemoveUsrs(Kind kind, int file_id,
                   const std::vector<std::pair<Usr, Def>> &to_remove);
   // Insert the contents of |update| into |db|.
   void ApplyIndexUpdate(IndexUpdate *update);
diff --git a/src/query_utils.cc b/src/query_utils.cc
index 03ca15e8..3f164819 100644
--- a/src/query_utils.cc
+++ b/src/query_utils.cc
@@ -64,13 +64,13 @@ std::vector<Use> GetVarDeclarations(DB *db, const std::vector<Usr> &usrs,
       if (def.spell) {
         has_def = true;
         // See messages/ccls_vars.cc
-        if (def.kind == lsSymbolKind::Field) {
+        if (def.kind == SymbolKind::Field) {
           if (!(kind & 1))
             break;
-        } else if (def.kind == lsSymbolKind::Variable) {
+        } else if (def.kind == SymbolKind::Variable) {
           if (!(kind & 2))
             break;
-        } else if (def.kind == lsSymbolKind::Parameter) {
+        } else if (def.kind == SymbolKind::Parameter) {
           if (!(kind & 4))
             break;
         }
@@ -86,11 +86,11 @@ std::vector<Use> GetVarDeclarations(DB *db, const std::vector<Usr> &usrs,
 std::vector<DeclRef> &GetNonDefDeclarations(DB *db, SymbolIdx sym) {
   static std::vector<DeclRef> empty;
   switch (sym.kind) {
-  case SymbolKind::Func:
+  case Kind::Func:
     return db->GetFunc(sym).declarations;
-  case SymbolKind::Type:
+  case Kind::Type:
     return db->GetType(sym).declarations;
-  case SymbolKind::Var:
+  case Kind::Var:
     return db->GetVar(sym).declarations;
   default:
     break;
@@ -169,45 +169,44 @@ std::optional<lsRange> GetLsRange(WorkingFile *wfile,
                  lsPosition{*end, end_column}};
 }
 
-lsDocumentUri GetLsDocumentUri(DB *db, int file_id, std::string *path) {
+DocumentUri GetLsDocumentUri(DB *db, int file_id, std::string *path) {
   QueryFile &file = db->files[file_id];
   if (file.def) {
     *path = file.def->path;
-    return lsDocumentUri::FromPath(*path);
+    return DocumentUri::FromPath(*path);
   } else {
     *path = "";
-    return lsDocumentUri::FromPath("");
+    return DocumentUri::FromPath("");
   }
 }
 
-lsDocumentUri GetLsDocumentUri(DB *db, int file_id) {
+DocumentUri GetLsDocumentUri(DB *db, int file_id) {
   QueryFile &file = db->files[file_id];
   if (file.def) {
-    return lsDocumentUri::FromPath(file.def->path);
+    return DocumentUri::FromPath(file.def->path);
   } else {
-    return lsDocumentUri::FromPath("");
+    return DocumentUri::FromPath("");
   }
 }
 
-std::optional<lsLocation> GetLsLocation(DB *db, WorkingFiles *wfiles,
-                                        Use use) {
+std::optional<Location> GetLsLocation(DB *db, WorkingFiles *wfiles, Use use) {
   std::string path;
-  lsDocumentUri uri = GetLsDocumentUri(db, use.file_id, &path);
+  DocumentUri uri = GetLsDocumentUri(db, use.file_id, &path);
   std::optional<lsRange> range =
       GetLsRange(wfiles->GetFileByFilename(path), use.range);
   if (!range)
     return std::nullopt;
-  return lsLocation{uri, *range};
+  return Location{uri, *range};
 }
 
-std::optional<lsLocation> GetLsLocation(DB *db, WorkingFiles *wfiles,
-                                        SymbolRef sym, int file_id) {
+std::optional<Location> GetLsLocation(DB *db, WorkingFiles *wfiles,
+                                      SymbolRef sym, int file_id) {
   return GetLsLocation(db, wfiles, Use{{sym.range, sym.role}, file_id});
 }
 
-std::vector<lsLocation> GetLsLocations(DB *db, WorkingFiles *wfiles,
-                                       const std::vector<Use> &uses) {
-  std::vector<lsLocation> ret;
+std::vector<Location> GetLsLocations(DB *db, WorkingFiles *wfiles,
+                                     const std::vector<Use> &uses) {
+  std::vector<Location> ret;
   for (Use use : uses)
     if (auto loc = GetLsLocation(db, wfiles, use))
       ret.push_back(*loc);
@@ -218,12 +217,12 @@ std::vector<lsLocation> GetLsLocations(DB *db, WorkingFiles *wfiles,
   return ret;
 }
 
-lsSymbolKind GetSymbolKind(DB *db, SymbolIdx sym) {
-  lsSymbolKind ret;
-  if (sym.kind == SymbolKind::File)
-    ret = lsSymbolKind::File;
+SymbolKind GetSymbolKind(DB *db, SymbolIdx sym) {
+  SymbolKind ret;
+  if (sym.kind == Kind::File)
+    ret = SymbolKind::File;
   else {
-    ret = lsSymbolKind::Unknown;
+    ret = SymbolKind::Unknown;
     WithEntity(db, sym, [&](const auto &entity) {
       for (auto &def : entity.def) {
         ret = def.kind;
@@ -234,23 +233,23 @@ lsSymbolKind GetSymbolKind(DB *db, SymbolIdx sym) {
   return ret;
 }
 
-std::optional<lsSymbolInformation> GetSymbolInfo(DB *db, SymbolIdx sym,
-                                                 bool detailed) {
+std::optional<SymbolInformation> GetSymbolInfo(DB *db, SymbolIdx sym,
+                                               bool detailed) {
   switch (sym.kind) {
-  case SymbolKind::Invalid:
+  case Kind::Invalid:
     break;
-  case SymbolKind::File: {
+  case Kind::File: {
     QueryFile &file = db->GetFile(sym);
     if (!file.def)
       break;
 
-    lsSymbolInformation info;
+    SymbolInformation info;
     info.name = file.def->path;
-    info.kind = lsSymbolKind::File;
+    info.kind = SymbolKind::File;
     return info;
   }
   default: {
-    lsSymbolInformation info;
+    SymbolInformation info;
     EachEntityDef(db, sym, [&](const auto &def) {
       if (detailed)
         info.name = def.detailed_name;
@@ -290,10 +289,10 @@ std::vector<SymbolRef> FindSymbolsAtLocation(WorkingFile *wfile,
   // important for macros which generate code so that we can resolving the
   // macro argument takes priority over the entire macro body.
   //
-  // Order SymbolKind::Var before SymbolKind::Type. Macro calls are treated as
-  // Var currently. If a macro expands to tokens led by a SymbolKind::Type, the
-  // macro and the Type have the same range. We want to find the macro
-  // definition instead of the Type definition.
+  // Order Kind::Var before Kind::Type. Macro calls are treated as Var
+  // currently. If a macro expands to tokens led by a Kind::Type, the macro and
+  // the Type have the same range. We want to find the macro definition instead
+  // of the Type definition.
   //
   // Then order functions before other types, which makes goto definition work
   // better on constructors.
diff --git a/src/query_utils.hh b/src/query_utils.hh
index e91a0f33..999561eb 100644
--- a/src/query_utils.hh
+++ b/src/query_utils.hh
@@ -24,16 +24,16 @@ std::vector<Use> GetUsesForAllBases(DB *db, QueryFunc &root);
 std::vector<Use> GetUsesForAllDerived(DB *db, QueryFunc &root);
 std::optional<lsRange> GetLsRange(WorkingFile *working_file,
                                   const Range &location);
-lsDocumentUri GetLsDocumentUri(DB *db, int file_id, std::string *path);
-lsDocumentUri GetLsDocumentUri(DB *db, int file_id);
+DocumentUri GetLsDocumentUri(DB *db, int file_id, std::string *path);
+DocumentUri GetLsDocumentUri(DB *db, int file_id);
 
-std::optional<lsLocation> GetLsLocation(DB *db, WorkingFiles *wfiles, Use use);
-std::optional<lsLocation> GetLsLocation(DB *db, WorkingFiles *wfiles,
+std::optional<Location> GetLsLocation(DB *db, WorkingFiles *wfiles, Use use);
+std::optional<Location> GetLsLocation(DB *db, WorkingFiles *wfiles,
                                         SymbolRef sym, int file_id);
-std::vector<lsLocation> GetLsLocations(DB *db, WorkingFiles *wfiles,
+std::vector<Location> GetLsLocations(DB *db, WorkingFiles *wfiles,
                                            const std::vector<Use> &uses);
 // Returns a symbol. The symbol will *NOT* have a location assigned.
-std::optional<lsSymbolInformation> GetSymbolInfo(DB *db, SymbolIdx sym,
+std::optional<SymbolInformation> GetSymbolInfo(DB *db, SymbolIdx sym,
                                                  bool detailed);
 
 std::vector<SymbolRef> FindSymbolsAtLocation(WorkingFile *working_file,
@@ -43,16 +43,16 @@ std::vector<SymbolRef> FindSymbolsAtLocation(WorkingFile *working_file,
 
 template <typename Fn> void WithEntity(DB *db, SymbolIdx sym, Fn &&fn) {
   switch (sym.kind) {
-  case SymbolKind::Invalid:
-  case SymbolKind::File:
+  case Kind::Invalid:
+  case Kind::File:
     break;
-  case SymbolKind::Func:
+  case Kind::Func:
     fn(db->GetFunc(sym));
     break;
-  case SymbolKind::Type:
+  case Kind::Type:
     fn(db->GetType(sym));
     break;
-  case SymbolKind::Var:
+  case Kind::Var:
     fn(db->GetVar(sym));
     break;
   }
@@ -81,7 +81,7 @@ void EachOccurrence(DB *db, SymbolIdx sym, bool include_decl, Fn &&fn) {
   });
 }
 
-lsSymbolKind GetSymbolKind(DB *db, SymbolIdx sym);
+SymbolKind GetSymbolKind(DB *db, SymbolIdx sym);
 
 template <typename Fn>
 void EachDefinedFunc(DB *db, const std::vector<Usr> &usrs, Fn &&fn) {
diff --git a/src/test.cc b/src/test.cc
index b7c8a2b7..6dc5b244 100644
--- a/src/test.cc
+++ b/src/test.cc
@@ -255,10 +255,10 @@ bool RunIndexTests(const std::string &filter_path, bool enable_update) {
   bool success = true;
   bool update_all = false;
   // FIXME: show diagnostics in STL/headers when running tests. At the moment
-  // this can be done by constructing ClangIndex index(1, 1);
-  CompletionManager completion(
-      nullptr, nullptr, [&](std::string, std::vector<lsDiagnostic>) {},
-      [](lsRequestId id) {});
+  // this can be done by conRequestIdex index(1, 1);
+  CompletionManager completion(nullptr, nullptr,
+                               [&](std::string, std::vector<Diagnostic>) {},
+                               [](RequestId id) {});
   GetFilesInFolder(
       "index_tests", true /*recursive*/, true /*add_folder_to_path*/,
       [&](const std::string &path) {
diff --git a/src/working_files.cc b/src/working_files.cc
index 3a0743a4..97eaa945 100644
--- a/src/working_files.cc
+++ b/src/working_files.cc
@@ -439,7 +439,7 @@ void WorkingFiles::DoActionOnFile(
   action(file);
 }
 
-WorkingFile *WorkingFiles::OnOpen(const lsTextDocumentItem &open) {
+WorkingFile *WorkingFiles::OnOpen(const TextDocumentItem &open) {
   std::lock_guard<std::mutex> lock(files_mutex);
 
   std::string filename = open.uri.GetPath();
@@ -493,7 +493,7 @@ void WorkingFiles::OnChange(const TextDocumentDidChangeParam &change) {
   }
 }
 
-void WorkingFiles::OnClose(const lsTextDocumentIdentifier &close) {
+void WorkingFiles::OnClose(const TextDocumentIdentifier &close) {
   std::lock_guard<std::mutex> lock(files_mutex);
 
   std::string filename = close.uri.GetPath();
diff --git a/src/working_files.hh b/src/working_files.hh
index ad02acd8..dc7ea7ee 100644
--- a/src/working_files.hh
+++ b/src/working_files.hh
@@ -31,7 +31,7 @@ struct WorkingFile {
   // A set of diagnostics that have been reported for this file.
   // NOTE: _ is appended because it must be accessed under the WorkingFiles
   // lock!
-  std::vector<lsDiagnostic> diagnostics_;
+  std::vector<Diagnostic> diagnostics_;
 
   WorkingFile(const std::string &filename, const std::string &buffer_content);
 
@@ -105,9 +105,9 @@ struct WorkingFiles {
   void DoActionOnFile(const std::string &filename,
                       const std::function<void(WorkingFile *file)> &action);
 
-  WorkingFile *OnOpen(const lsTextDocumentItem &open);
+  WorkingFile *OnOpen(const TextDocumentItem &open);
   void OnChange(const TextDocumentDidChangeParam &change);
-  void OnClose(const lsTextDocumentIdentifier &close);
+  void OnClose(const TextDocumentIdentifier &close);
 
   // If |filter_paths| is non-empty, only files which contain any of the given
   // strings. For example, {"foo", "bar"} means that every result has either the