.

CMakeLists.txt

@@ -179,6 +179,7 @@ target_sources(ccls PRIVATE
                src/clang_translation_unit.cc
                src/clang_utils.cc
                src/command_line.cc
+               src/config.cc
                src/diagnostics_engine.cc
                src/file_consumer.cc
                src/file_contents.cc
@@ -209,7 +210,6 @@ target_sources(ccls PRIVATE
                src/timestamp_manager.cc
                src/type_printer.cc
                src/utils.cc
-               src/work_thread.cc
                src/working_files.cc)
 
 target_sources(ccls PRIVATE
@@ -217,7 +217,6 @@ target_sources(ccls PRIVATE
                src/messages/ccls_call_hierarchy.cc
                src/messages/ccls_callers.cc
                src/messages/ccls_derived.cc
-               src/messages/ccls_did_view.cc
                src/messages/ccls_file_info.cc
                src/messages/ccls_freshen_index.cc
                src/messages/ccls_index_file.cc
@@ -225,7 +224,6 @@ target_sources(ccls PRIVATE
                src/messages/ccls_member_hierarchy.cc
                src/messages/ccls_random.cc
                src/messages/ccls_vars.cc
-               src/messages/ccls_wait.cc
                src/messages/exit.cc
                src/messages/initialize.cc
                src/messages/shutdown.cc

src/clang_indexer.cc

@@ -9,10 +9,10 @@
 
 #include <loguru.hpp>
 
+#include <limits.h>
 #include <algorithm>
 #include <cassert>
 #include <chrono>
-#include <climits>
 #include <iostream>
 
 // TODO: See if we can use clang_indexLoc_getFileLocation to get a type ref on
@@ -861,7 +861,7 @@ CXIdxClientFile OnIndexIncludedFile(CXClientData client_data,
   IndexInclude include;
   include.line = line;
   include.resolved_path = FileName(file->file);
-  if (!include.resolved_path.empty())
+  if (include.resolved_path.size())
     db->includes.push_back(include);
 
   return nullptr;

src/clang_utils.cc

@@ -1,5 +1,6 @@
 #include "clang_utils.h"
 
+#include "filesystem.hh"
 #include "platform.h"
 
 namespace {
@@ -106,8 +107,11 @@ std::optional<lsDiagnostic> BuildAndDisposeDiagnostic(CXDiagnostic diagnostic,
 
 std::string FileName(CXFile file) {
   CXString cx_name = clang_getFileName(file);
-  std::string name = ToString(cx_name);
+  std::string ret = NormalizePath(ToString(cx_name));
-  return NormalizePath(name);
+  // Resolve /usr/include/c++/7.3.0 symlink.
+  if (!StartsWith(ret, g_config.projectRoot))
+    ret = fs::canonical(ret);
+  return ret;
 }
 
 std::string ToString(CXString cx_string) {

src/command_line.cc

@@ -22,7 +22,6 @@
 #include "test.h"
 #include "timer.h"
 #include "timestamp_manager.h"
-#include "work_thread.h"
 #include "working_files.h"
 
 #include <doctest/doctest.h>
@@ -35,7 +34,6 @@
 #include <iostream>
 #include <iterator>
 #include <string>
-#include <thread>
 #include <unordered_map>
 #include <vector>
 
@@ -255,7 +253,7 @@ void LaunchStdinLoop(Config* config,
   // clients.
   std::cin.tie(nullptr);
 
-  WorkThread::StartThread("stdin", [request_times]() {
+  StartThread("stdin", [request_times]() {
     auto* queue = QueueManager::instance();
     while (true) {
       std::unique_ptr<InMessage> message;
@@ -295,7 +293,7 @@ void LaunchStdinLoop(Config* config,
 
 void LaunchStdoutThread(std::unordered_map<MethodType, Timer>* request_times,
                         MultiQueueWaiter* waiter) {
-  WorkThread::StartThread("stdout", [=]() {
+  StartThread("stdout", [=]() {
     auto* queue = QueueManager::instance();
 
     while (true) {

src/config.cc

@@ -0,0 +1,3 @@
+#include "config.h"
+
+Config g_config;

src/config.h

@@ -281,5 +281,4 @@ MAKE_REFLECT_STRUCT(Config,
 
                     dumpAST);
 
-// Expected client version. We show an error if this doesn't match.
+extern Config g_config;
-constexpr const int kExpectedClientVersion = 3;

src/file_consumer.cc

@@ -104,4 +104,4 @@ void FileConsumer::EmitError(CXFile file) const {
     LOG_S(ERROR) << "Could not get unique file id for " << file_name
                  << " when parsing " << parse_file_;
   }
-}
+}

src/include_complete.cc

@@ -5,9 +5,6 @@
 #include "project.h"
 #include "standard_includes.h"
 #include "timer.h"
-#include "work_thread.h"
-
-#include <thread>
 
 namespace {
 
@@ -116,7 +113,7 @@ void IncludeComplete::Rescan() {
                                           config_->completion.includeBlacklist);
 
   is_scanning = true;
-  WorkThread::StartThread("scan_includes", [this]() {
+  StartThread("scan_includes", [this]() {
     Timer timer;
 
     InsertStlIncludes();

src/messages/ccls_did_view.cc

@@ -1,40 +0,0 @@
-#include "clang_complete.h"
-#include "message_handler.h"
-#include "working_files.h"
-
-namespace {
-MethodType kMethodType = "$ccls/textDocumentDidView";
-
-struct In_CclsTextDocumentDidView : public NotificationInMessage {
-  MethodType GetMethodType() const override { return kMethodType; }
-  struct Params {
-    lsDocumentUri textDocumentUri;
-  };
-  Params params;
-};
-MAKE_REFLECT_STRUCT(In_CclsTextDocumentDidView::Params, textDocumentUri);
-MAKE_REFLECT_STRUCT(In_CclsTextDocumentDidView, params);
-REGISTER_IN_MESSAGE(In_CclsTextDocumentDidView);
-
-struct Handler_CclsDidView
-    : BaseMessageHandler<In_CclsTextDocumentDidView> {
-  MethodType GetMethodType() const override { return kMethodType; }
-  void Run(In_CclsTextDocumentDidView* request) override {
-    std::string path = request->params.textDocumentUri.GetPath();
-
-    WorkingFile* working_file = working_files->GetFileByFilename(path);
-    if (!working_file)
-      return;
-    QueryFile* file = nullptr;
-    if (!FindFileOrFail(db, project, std::nullopt, path, &file))
-      return;
-
-    clang_complete->NotifyView(path);
-    if (file->def) {
-      EmitInactiveLines(working_file, file->def->inactive_regions);
-      EmitSemanticHighlighting(db, semantic_cache, working_file, file);
-    }
-  }
-};
-REGISTER_MESSAGE_HANDLER(Handler_CclsDidView);
-}  // namespace

src/messages/ccls_wait.cc

@@ -1,47 +0,0 @@
-#include "import_manager.h"
-#include "import_pipeline.h"
-#include "message_handler.h"
-#include "queue_manager.h"
-
-#include <loguru.hpp>
-
-namespace {
-MethodType kMethodType = "$ccls/wait";
-
-struct In_CclsWait : public NotificationInMessage {
-  MethodType GetMethodType() const override { return kMethodType; }
-};
-MAKE_REFLECT_EMPTY_STRUCT(In_CclsWait);
-REGISTER_IN_MESSAGE(In_CclsWait);
-
-struct Handler_CclsWait : MessageHandler {
-  MethodType GetMethodType() const override { return kMethodType; }
-
-  void Run(std::unique_ptr<InMessage> request) override {
-    // TODO: use status message system here, then run querydb as normal? Maybe
-    // this cannot be a normal message, ie, it needs to be re-entrant.
-
-    LOG_S(INFO) << "Waiting for idle";
-    int idle_count = 0;
-    while (true) {
-      bool has_work = false;
-      has_work |= import_pipeline_status->num_active_threads != 0;
-      has_work |= QueueManager::instance()->HasWork();
-      has_work |=
-          QueryDb_ImportMain(config, db, import_manager, import_pipeline_status,
-                             semantic_cache, working_files);
-      if (!has_work)
-        ++idle_count;
-      else
-        idle_count = 0;
-
-      // There are race conditions between each of the three checks above,
-      // so we retry a bunch of times to try to avoid any.
-      if (idle_count > 10)
-        break;
-    }
-    LOG_S(INFO) << "Done waiting for idle";
-  }
-};
-REGISTER_MESSAGE_HANDLER(Handler_CclsWait);
-}  // namespace

src/messages/initialize.cc

@@ -8,7 +8,6 @@
 #include "queue_manager.h"
 #include "serializers/json.h"
 #include "timer.h"
-#include "work_thread.h"
 #include "working_files.h"
 
 #include <loguru.hpp>
@@ -270,45 +269,13 @@ struct lsTextDocumentClientCapabilities {
     // The client supports the following `CompletionItem` specific
     // capabilities.
     std::optional<lsCompletionItem> completionItem;
-  };
+  } completion;
-  // Capabilities specific to the `textDocument/completion`
-  std::optional<lsCompletion> completion;
 
   struct lsGenericDynamicReg {
     // Whether foo supports dynamic registration.
     std::optional<bool> dynamicRegistration;
   };
 
-  // Capabilities specific to the `textDocument/hover`
-  std::optional<lsGenericDynamicReg> hover;
-
-  // Capabilities specific to the `textDocument/signatureHelp`
-  std::optional<lsGenericDynamicReg> signatureHelp;
-
-  // Capabilities specific to the `textDocument/references`
-  std::optional<lsGenericDynamicReg> references;
-
-  // Capabilities specific to the `textDocument/documentHighlight`
-  std::optional<lsGenericDynamicReg> documentHighlight;
-
-  // Capabilities specific to the `textDocument/documentSymbol`
-  std::optional<lsGenericDynamicReg> documentSymbol;
-
-  // Capabilities specific to the `textDocument/formatting`
-  std::optional<lsGenericDynamicReg> formatting;
-
-  // Capabilities specific to the `textDocument/rangeFormatting`
-  std::optional<lsGenericDynamicReg> rangeFormatting;
-
-  // Capabilities specific to the `textDocument/onTypeFormatting`
-  std::optional<lsGenericDynamicReg> onTypeFormatting;
-
-  // Capabilities specific to the `textDocument/definition`
-  std::optional<lsGenericDynamicReg> definition;
-
-  // Capabilities specific to the `textDocument/codeAction`
-  std::optional<lsGenericDynamicReg> codeAction;
-
   struct CodeLensRegistrationOptions : public lsGenericDynamicReg {
     // Code lens has a resolve provider as well.
     bool resolveProvider;
@@ -317,9 +284,6 @@ struct lsTextDocumentClientCapabilities {
   // Capabilities specific to the `textDocument/codeLens`
   std::optional<CodeLensRegistrationOptions> codeLens;
 
-  // Capabilities specific to the `textDocument/documentLink`
-  std::optional<lsGenericDynamicReg> documentLink;
-
   // Capabilities specific to the `textDocument/rename`
   std::optional<lsGenericDynamicReg> rename;
 };
@@ -344,18 +308,6 @@ MAKE_REFLECT_STRUCT(
 MAKE_REFLECT_STRUCT(lsTextDocumentClientCapabilities,
                     synchronization,
                     completion,
-                    hover,
-                    signatureHelp,
-                    references,
-                    documentHighlight,
-                    documentSymbol,
-                    formatting,
-                    rangeFormatting,
-                    onTypeFormatting,
-                    definition,
-                    codeAction,
-                    codeLens,
-                    documentLink,
                     rename);
 
 struct lsClientCapabilities {
@@ -512,29 +464,9 @@ struct Handler_Initialize : BaseMessageHandler<In_InitializeRequest> {
       // Client capabilities
       {
         const auto& cap = request->params.capabilities.textDocument;
-        if (cap.completion && cap.completion->completionItem)
+        if (cap.completion.completionItem)
           config->client.snippetSupport =
-              cap.completion->completionItem->snippetSupport.value_or(false);
+              cap.completion.completionItem->snippetSupport.value_or(false);
-      }
-
-      // Check client version.
-      if (config->clientVersion.has_value() &&
-          *config->clientVersion != kExpectedClientVersion) {
-        Out_ShowLogMessage out;
-        out.display_type = Out_ShowLogMessage::DisplayType::Show;
-        out.params.type = lsMessageType::Error;
-        out.params.message =
-            "ccls client (v" + std::to_string(*config->clientVersion) +
-            ") and server (v" + std::to_string(kExpectedClientVersion) +
-            ") version mismatch. Please update ";
-        if (config->clientVersion > kExpectedClientVersion)
-          out.params.message += "the ccls binary.";
-        else
-          out.params.message +=
-              "your extension client (VSIX file). Make sure to uninstall "
-              "the ccls extension and restart vscode before "
-              "reinstalling.";
-        out.Write(std::cout);
       }
 
       // Ensure there is a resource directory.
@@ -576,6 +508,7 @@ struct Handler_Initialize : BaseMessageHandler<In_InitializeRequest> {
       MakeDirectoryRecursive(config->cacheDirectory + '@' +
                              EscapeFileName(config->projectRoot));
 
+      g_config = *config;
       Timer time;
       diag_engine->Init(config);
       semantic_cache->Init(config);
@@ -599,7 +532,7 @@ struct Handler_Initialize : BaseMessageHandler<In_InitializeRequest> {
       }
       LOG_S(INFO) << "Starting " << config->index.threads << " indexers";
       for (int i = 0; i < config->index.threads; ++i) {
-        WorkThread::StartThread("indexer" + std::to_string(i), [=]() {
+        StartThread("indexer" + std::to_string(i), [=]() {
           Indexer_Main(config, diag_engine, file_consumer_shared,
                        timestamp_manager, import_manager,
                        import_pipeline_status, project, working_files, waiter);

src/messages/text_document_did_open.cc

@@ -72,9 +72,8 @@ struct Handler_TextDocumentDidOpen
 
     clang_complete->FlushSession(entry.filename);
     LOG_S(INFO) << "Flushed clang complete sessions for " << entry.filename;
-    if (params.args.size()) {
+    if (params.args.size())
-      project->SetFlagsForFile(params.args, path);
+        project->SetFlagsForFile(params.args, path);
-    }
   }
 };
 REGISTER_MESSAGE_HANDLER(Handler_TextDocumentDidOpen);

src/messages/text_document_formatting.cc

@@ -1,62 +0,0 @@
-#include "clang_format.h"
-#include "message_handler.h"
-#include "queue_manager.h"
-#include "working_files.h"
-
-#include <loguru.hpp>
-
-namespace {
-MethodType kMethodType = "textDocument/formatting";
-
-struct In_TextDocumentFormatting : public RequestInMessage {
-  MethodType GetMethodType() const override { return kMethodType; }
-  struct Params {
-    lsTextDocumentIdentifier textDocument;
-    lsFormattingOptions options;
-  };
-  Params params;
-};
-MAKE_REFLECT_STRUCT(In_TextDocumentFormatting::Params, textDocument, options);
-MAKE_REFLECT_STRUCT(In_TextDocumentFormatting, id, params);
-REGISTER_IN_MESSAGE(In_TextDocumentFormatting);
-
-struct Out_TextDocumentFormatting
-    : public lsOutMessage<Out_TextDocumentFormatting> {
-  lsRequestId id;
-  std::vector<lsTextEdit> result;
-};
-MAKE_REFLECT_STRUCT(Out_TextDocumentFormatting, jsonrpc, id, result);
-
-struct Handler_TextDocumentFormatting
-    : BaseMessageHandler<In_TextDocumentFormatting> {
-  MethodType GetMethodType() const override { return kMethodType; }
-  void Run(In_TextDocumentFormatting* request) override {
-    Out_TextDocumentFormatting response;
-    response.id = request->id;
-#if USE_CLANG_CXX
-    QueryFile* file;
-    if (!FindFileOrFail(db, project, request->id,
-                        request->params.textDocument.uri.GetPath(), &file)) {
-      return;
-    }
-
-    WorkingFile* working_file =
-        working_files->GetFileByFilename(file->def->path);
-
-    response.result = ConvertClangReplacementsIntoTextEdits(
-        working_file->buffer_content,
-        ClangFormatDocument(working_file, 0,
-                            working_file->buffer_content.size(),
-                            request->params.options));
-#else
-    LOG_S(WARNING) << "You must compile ccls with --use-clang-cxx to use "
-                      "textDocument/formatting.";
-    // TODO: Fallback to execute the clang-format binary?
-    response.result = {};
-#endif
-
-    QueueManager::WriteStdout(kMethodType, response);
-  }
-};
-REGISTER_MESSAGE_HANDLER(Handler_TextDocumentFormatting);
-}  // namespace

src/platform_posix.cc

@@ -277,7 +277,7 @@ void TraceMe() {
   // If the environment variable is defined, wait for a debugger.
   // In gdb, you need to invoke `signal SIGCONT` if you want ccls to continue
   // after detaching.
-  if (getenv("CQUERY_TRACEME"))
+  if (getenv("CCLS_TRACEME"))
     raise(SIGTSTP);
 }
 

src/port.cc

@@ -5,6 +5,6 @@
 
 void ccls_unreachable_internal(const char* msg, const char* file, int line) {
   fprintf(stderr, "unreachable %s:%d %s\n", file, line, msg);
-  CQUERY_BUILTIN_UNREACHABLE;
+  CCLS_BUILTIN_UNREACHABLE;
   abort();
 }

src/port.h

@@ -12,17 +12,17 @@
 
 // TODO GCC
 #if __has_builtin(__builtin_unreachable)
-#define CQUERY_BUILTIN_UNREACHABLE __builtin_unreachable()
+#define CCLS_BUILTIN_UNREACHABLE __builtin_unreachable()
 #elif defined(_MSC_VER)
-#define CQUERY_BUILTIN_UNREACHABLE __assume(false)
+#define CCLS_BUILTIN_UNREACHABLE __assume(false)
 #else
-#define CQUERY_BUILTIN_UNREACHABLE
+#define CCLS_BUILTIN_UNREACHABLE
 #endif
 
 void ccls_unreachable_internal(const char* msg, const char* file, int line);
 #ifndef NDEBUG
-#define CQUERY_UNREACHABLE(msg) \
+#define CCLS_UNREACHABLE(msg) \
   ccls_unreachable_internal(msg, __FILE__, __LINE__)
 #else
-#define CQUERY_UNREACHABLE(msg)
+#define CCLS_UNREACHABLE(msg)
 #endif

src/project.cc

@@ -2,6 +2,7 @@
 
 #include "cache_manager.h"
 #include "clang_utils.h"
+#include "filesystem.hh"
 #include "language.h"
 #include "match.h"
 #include "platform.h"
@@ -27,41 +28,22 @@
 #include <unordered_set>
 #include <vector>
 
-extern bool gTestOutputMode;
-
 struct CompileCommandsEntry {
-  std::string directory;
+  fs::path directory;
   std::string file;
   std::string command;
   std::vector<std::string> args;
+
+  fs::path ResolveIfRelative(fs::path path) const {
+    if (path.is_absolute())
+      return path;
+    return directory / path;
+  }
 };
 MAKE_REFLECT_STRUCT(CompileCommandsEntry, directory, file, command, args);
 
 namespace {
 
-bool g_disable_normalize_path_for_test = false;
-
-std::string NormalizePathWithTestOptOut(const std::string& path) {
-  if (g_disable_normalize_path_for_test) {
-    // Add a & so we can test to verify a path is normalized.
-    return "&" + path;
-  }
-  return NormalizePath(path);
-}
-
-bool IsUnixAbsolutePath(const std::string& path) {
-  return !path.empty() && path[0] == '/';
-}
-
-bool IsWindowsAbsolutePath(const std::string& path) {
-  auto is_drive_letter = [](char c) {
-    return (c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z');
-  };
-
-  return path.size() > 3 && path[1] == ':' &&
-         (path[2] == '/' || path[2] == '\\') && is_drive_letter(path[0]);
-}
-
 enum class ProjectMode { CompileCommandsJson, DotCcls, ExternalCommand };
 
 struct ProjectConfig {
@@ -127,22 +109,8 @@ Project::Entry GetCompilationEntryFromCompileCommandEntry(
     Config* init_opts,
     ProjectConfig* config,
     const CompileCommandsEntry& entry) {
-  auto cleanup_maybe_relative_path = [&](const std::string& path) {
-    // TODO/FIXME: Normalization will fail for paths that do not exist. Should
-    // it return an std::optional<std::string>?
-    assert(!path.empty());
-    if (entry.directory.empty() || IsUnixAbsolutePath(path) ||
-        IsWindowsAbsolutePath(path)) {
-      // We still want to normalize, as the path may contain .. characters.
-      return NormalizePathWithTestOptOut(path);
-    }
-    if (EndsWith(entry.directory, "/"))
-      return NormalizePathWithTestOptOut(entry.directory + path);
-    return NormalizePathWithTestOptOut(entry.directory + "/" + path);
-  };
-
   Project::Entry result;
-  result.filename = NormalizePathWithTestOptOut(entry.file);
+  result.filename = entry.file;
   const std::string base_name = GetBaseName(entry.file);
 
   // Expand %c %cpp %clang
@@ -185,7 +153,7 @@ Project::Entry GetCompilationEntryFromCompileCommandEntry(
 
   // Add -working-directory if not provided.
   if (!AnyStartsWith(args, "-working-directory"))
-    result.args.emplace_back("-working-directory=" + entry.directory);
+    result.args.emplace_back("-working-directory=" + entry.directory.string());
 
   bool next_flag_is_path = false;
   bool add_next_flag_to_quote_dirs = false;
@@ -212,7 +180,7 @@ Project::Entry GetCompilationEntryFromCompileCommandEntry(
     // Finish processing path for the previous argument, which was a switch.
     // {"-I", "foo"} style.
     if (next_flag_is_path) {
-      std::string normalized_arg = cleanup_maybe_relative_path(arg);
+      std::string normalized_arg = entry.ResolveIfRelative(arg);
       if (add_next_flag_to_quote_dirs)
         config->quote_dirs.insert(normalized_arg);
       if (add_next_flag_to_angle_dirs)
@@ -238,7 +206,7 @@ Project::Entry GetCompilationEntryFromCompileCommandEntry(
         if (StartsWith(arg, flag_type)) {
           std::string path = arg.substr(flag_type.size());
           assert(!path.empty());
-          path = cleanup_maybe_relative_path(path);
+          path = entry.ResolveIfRelative(path);
           if (clang_cl || StartsWithAny(arg, kNormalizePathArgs))
             arg = flag_type + path;
           if (ShouldAddToQuoteIncludes(flag_type))
@@ -254,7 +222,7 @@ Project::Entry GetCompilationEntryFromCompileCommandEntry(
       // slow. See
       // https://github.com/cquery-project/cquery/commit/af63df09d57d765ce12d40007bf56302a0446678.
       if (EndsWith(arg, base_name))
-        arg = cleanup_maybe_relative_path(arg);
+        arg = entry.ResolveIfRelative(arg);
       // TODO Exclude .a .o to make link command in compile_commands.json work.
       // Also, clang_parseTranslationUnit2FullArgv does not seem to accept
       // multiple source filenames.
@@ -450,13 +418,7 @@ std::vector<Project::Entry> LoadCompilationEntriesFromDirectory(
 
     our_time.Resume();
     entry.directory = directory;
-    std::string absolute_filename;
+    entry.file = entry.ResolveIfRelative(relative_filename);
-    if (IsUnixAbsolutePath(relative_filename) ||
-        IsWindowsAbsolutePath(relative_filename))
-      absolute_filename = relative_filename;
-    else
-      absolute_filename = directory + "/" + relative_filename;
-    entry.file = NormalizePathWithTestOptOut(absolute_filename);
 
     result.push_back(
         GetCompilationEntryFromCompileCommandEntry(config, project, entry));
@@ -513,8 +475,8 @@ void Project::Load(Config* config, const std::string& root_directory) {
   }
 
   // Setup project entries.
-  absolute_path_to_entry_index_.resize(entries.size());
+  absolute_path_to_entry_index_.reserve(entries.size());
-  for (int i = 0; i < entries.size(); ++i)
+  for (size_t i = 0; i < entries.size(); ++i)
     absolute_path_to_entry_index_[entries[i].filename] = i;
 }
 
@@ -616,9 +578,6 @@ TEST_SUITE("Project") {
   void CheckFlags(const std::string& directory, const std::string& file,
                   std::vector<std::string> raw,
                   std::vector<std::string> expected) {
-    g_disable_normalize_path_for_test = true;
-    gTestOutputMode = true;
-
     Config config;
     ProjectConfig project;
     project.project_dir = "/w/c/s/";
@@ -656,7 +615,7 @@ TEST_SUITE("Project") {
     CheckFlags(
         /* raw */ {"clang", "-lstdc++", "myfile.cc"},
         /* expected */
-        {"clang", "-working-directory=/dir/", "-lstdc++", "&/dir/myfile.cc",
+        {"clang", "-working-directory=/dir/", "-lstdc++", "/dir/myfile.cc",
          "-resource-dir=/w/resource_dir/", "-Wno-unknown-warning-option",
          "-fparse-all-comments"});
 
@@ -668,17 +627,18 @@ TEST_SUITE("Project") {
          "-fparse-all-comments"});
   }
 
+#ifdef _WIN32
   TEST_CASE("Windows path normalization") {
     CheckFlags("E:/workdir", "E:/workdir/bar.cc", /* raw */ {"clang", "bar.cc"},
                /* expected */
-               {"clang", "-working-directory=E:/workdir", "&E:/workdir/bar.cc",
+               {"clang", "-working-directory=E:/workdir", "E:/workdir/bar.cc",
                 "-resource-dir=/w/resource_dir/", "-Wno-unknown-warning-option",
                 "-fparse-all-comments"});
 
     CheckFlags("E:/workdir", "E:/workdir/bar.cc",
                /* raw */ {"clang", "E:/workdir/bar.cc"},
                /* expected */
-               {"clang", "-working-directory=E:/workdir", "&E:/workdir/bar.cc",
+               {"clang", "-working-directory=E:/workdir", "E:/workdir/bar.cc",
                 "-resource-dir=/w/resource_dir/", "-Wno-unknown-warning-option",
                 "-fparse-all-comments"});
 
@@ -686,7 +646,7 @@ TEST_SUITE("Project") {
                /* raw */ {"clang-cl.exe", "/I./test", "E:/workdir/bar.cc"},
                /* expected */
                {"clang-cl.exe", "-working-directory=E:/workdir",
-                "/I&E:/workdir/./test", "&E:/workdir/bar.cc",
+                "/I&E:/workdir/./test", "E:/workdir/bar.cc",
                 "-resource-dir=/w/resource_dir/", "-Wno-unknown-warning-option",
                 "-fparse-all-comments"});
 
@@ -696,28 +656,20 @@ TEST_SUITE("Project") {
                /* expected */
                {"cl.exe", "-working-directory=E:/workdir",
                 "/I&E:/workdir/../third_party/test/include",
-                "&E:/workdir/bar.cc", "-resource-dir=/w/resource_dir/",
+                "E:/workdir/bar.cc", "-resource-dir=/w/resource_dir/",
                 "-Wno-unknown-warning-option", "-fparse-all-comments"});
   }
+#endif
 
   TEST_CASE("Path in args") {
     CheckFlags("/home/user", "/home/user/foo/bar.c",
                /* raw */ {"cc", "-O0", "foo/bar.c"},
                /* expected */
                {"cc", "-working-directory=/home/user", "-O0",
-                "&/home/user/foo/bar.c", "-resource-dir=/w/resource_dir/",
+                "/home/user/foo/bar.c", "-resource-dir=/w/resource_dir/",
                 "-Wno-unknown-warning-option", "-fparse-all-comments"});
   }
 
-  TEST_CASE("Implied binary") {
-    CheckFlags("/home/user", "/home/user/foo/bar.cc",
-               /* raw */ {"clang", "-DDONT_IGNORE_ME"},
-               /* expected */
-               {"clang", "-working-directory=/home/user", "-DDONT_IGNORE_ME",
-                "-resource-dir=/w/resource_dir/", "-Wno-unknown-warning-option",
-                "-fparse-all-comments"});
-  }
-
   TEST_CASE("Directory extraction") {
     Config init_opts;
     ProjectConfig config;
@@ -752,11 +704,11 @@ TEST_SUITE("Project") {
         GetCompilationEntryFromCompileCommandEntry(&init_opts, &config, entry);
 
     std::unordered_set<std::string> angle_expected{
-        "&/a_absolute1", "&/a_absolute2", "&/base/a_relative1",
+        "/a_absolute1", "/a_absolute2", "/base/a_relative1",
-        "&/base/a_relative2"};
+        "/base/a_relative2"};
     std::unordered_set<std::string> quote_expected{
-        "&/q_absolute1", "&/q_absolute2", "&/base/q_relative1",
+        "/q_absolute1", "/q_absolute2", "/base/q_relative1",
-        "&/base/q_relative2"};
+        "/base/q_relative2"};
     REQUIRE(config.angle_dirs == angle_expected);
     REQUIRE(config.quote_dirs == quote_expected);
   }
@@ -817,23 +769,6 @@ TEST_SUITE("Project") {
     }
   }
 
-  TEST_CASE("IsWindowsAbsolutePath works correctly") {
-    REQUIRE(IsWindowsAbsolutePath("C:/Users/projects/"));
-    REQUIRE(IsWindowsAbsolutePath("C:/Users/projects"));
-    REQUIRE(IsWindowsAbsolutePath("C:/Users/projects"));
-    REQUIRE(IsWindowsAbsolutePath("C:\\Users\\projects"));
-    REQUIRE(IsWindowsAbsolutePath("C:\\\\Users\\\\projects"));
-    REQUIRE(IsWindowsAbsolutePath("c:\\\\Users\\\\projects"));
-    REQUIRE(IsWindowsAbsolutePath("A:\\\\Users\\\\projects"));
-
-    REQUIRE(!IsWindowsAbsolutePath("C:/"));
-    REQUIRE(!IsWindowsAbsolutePath("../abc/test"));
-    REQUIRE(!IsWindowsAbsolutePath("5:/test"));
-    REQUIRE(!IsWindowsAbsolutePath("ccls/project/file.cc"));
-    REQUIRE(!IsWindowsAbsolutePath(""));
-    REQUIRE(!IsWindowsAbsolutePath("/etc/linux/path"));
-  }
-
   TEST_CASE("Entry inference prefers same file endings") {
     Project p;
     {

src/project.h

@@ -3,13 +3,12 @@
 #include "config.h"
 #include "method.h"
 
-#include <optional>
-#include <sparsepp/spp.h>
-#include <variant>
-
 #include <functional>
 #include <mutex>
+#include <optional>
 #include <string>
+#include <unordered_map>
+#include <variant>
 #include <vector>
 
 class QueueManager;
@@ -29,7 +28,7 @@ struct Project {
   std::vector<std::string> angle_include_directories;
 
   std::vector<Entry> entries;
-  spp::sparse_hash_map<std::string, int> absolute_path_to_entry_index_;
+  std::unordered_map<std::string, int> absolute_path_to_entry_index_;
 
   // Loads a project for the given |directory|.
   //

src/query.h

@@ -270,7 +270,7 @@ struct QueryDatabase {
   std::vector<QueryVar> vars;
 
   // Lookup symbol based on a usr.
-  spp::sparse_hash_map<std::string, QueryFileId> usr_to_file;
+  std::unordered_map<std::string, QueryFileId> usr_to_file;
   spp::sparse_hash_map<Usr, QueryTypeId> usr_to_type;
   spp::sparse_hash_map<Usr, QueryFuncId> usr_to_func;
   spp::sparse_hash_map<Usr, QueryVarId> usr_to_var;

src/utils.cc

@@ -16,6 +16,7 @@
 #include <queue>
 #include <sstream>
 #include <string>
+#include <thread>
 #include <unordered_map>
 using namespace std::placeholders;
 
@@ -277,6 +278,13 @@ std::string GetDefaultResourceDirectory() {
   return NormalizePath(result);
 }
 
+void StartThread(const std::string& thread_name, std::function<void()> entry) {
+  new std::thread([thread_name, entry]() {
+    SetCurrentThreadName(thread_name);
+    entry();
+  });
+}
+
 TEST_SUITE("StripFileType") {
   TEST_CASE("all") {
     REQUIRE(StripFileType("") == "");

src/utils.h

@@ -149,3 +149,5 @@ inline void hash_combine(std::size_t& seed, const T& v, Rest... rest) {
   }
 
 std::string GetDefaultResourceDirectory();
+
+void StartThread(const std::string& thread_name, std::function<void()> entry);

src/work_thread.cc

@@ -1,12 +0,0 @@
-#include "work_thread.h"
-
-#include "platform.h"
-
-// static
-void WorkThread::StartThread(const std::string& thread_name,
-                             std::function<void()> entry_point) {
-  new std::thread([thread_name, entry_point]() {
-    SetCurrentThreadName(thread_name);
-    entry_point();
-  });
-}

src/work_thread.h

@@ -1,19 +0,0 @@
-#pragma once
-
-#include <atomic>
-#include <functional>
-#include <mutex>
-#include <thread>
-#include <vector>
-
-// Helper methods for starting threads that do some work. Enables test code to
-// wait for all work to complete.
-struct WorkThread {
-  // Launch a new thread. |entry_point| will be called continously. It should
-  // return true if it there is still known work to be done.
-  static void StartThread(const std::string& thread_name,
-                          std::function<void()> entry_point);
-
-  // Static-only class.
-  WorkThread() = delete;
-};