Revert "[clangd] Config: config struct propagated through Context"

This reverts commit 9963d93b0731e21dd1c9c1cebf8baaecf2010330.

Fails on mac/win:
http://45.33.8.238/win/18704/step_9.txt
http://45.33.8.238/mac/16341/step_9.txt

5 files changed, 0 insertions, 117 deletions

diff --git a/clang-tools-extra/clangd/CMakeLists.txt b/clang-tools-extra/clangd/CMakeLists.txt
index 20a32d2..de3dd81 100644
--- a/clang-tools-extra/clangd/CMakeLists.txt
+++ b/clang-tools-extra/clangd/CMakeLists.txt
@@ -36,7 +36,6 @@ add_clang_library(clangDaemon
   CollectMacros.cpp
   CompileCommands.cpp
   Compiler.cpp
-  Config.cpp
   ConfigYAML.cpp
   Diagnostics.cpp
   DraftStore.cpp
diff --git a/clang-tools-extra/clangd/CompileCommands.cpp b/clang-tools-extra/clangd/CompileCommands.cpp
index f9d5cccf..a2d704f 100644
--- a/clang-tools-extra/clangd/CompileCommands.cpp
+++ b/clang-tools-extra/clangd/CompileCommands.cpp
@@ -7,7 +7,6 @@
 //===----------------------------------------------------------------------===//
 
 #include "CompileCommands.h"
-#include "Config.h"
 #include "support/Logger.h"
 #include "clang/Frontend/CompilerInvocation.h"
 #include "clang/Tooling/ArgumentsAdjusters.h"
@@ -183,10 +182,6 @@ CommandMangler CommandMangler::forTests() {
 }
 
 void CommandMangler::adjust(std::vector<std::string> &Cmd) const {
-  // FIXME: remove const_cast once unique_function is const-compatible.
-  for (auto &Edit : const_cast<Config &>(config()).CompileFlags.Edits)
-    Edit(Cmd);
-
   // Check whether the flag exists, either as -flag or -flag=*
   auto Has = [&](llvm::StringRef Flag) {
     for (llvm::StringRef Arg : Cmd) {
diff --git a/clang-tools-extra/clangd/Config.cpp b/clang-tools-extra/clangd/Config.cpp
deleted file mode 100644
index 699b03e..0000000
--- a/clang-tools-extra/clangd/Config.cpp
+++ /dev/null
@@ -1,25 +0,0 @@
-//===--- Config.cpp - User configuration of clangd behavior ---------------===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-
-#include "Config.h"
-#include "support/Context.h"
-
-namespace clang {
-namespace clangd {
-
-Key<Config> Config::Key;
-
-const Config &config() {
-  if (const Config *C = Context::current().get(Config::Key))
-    return *C;
-  static Config Default;
-  return Default;
-}
-
-} // namespace clangd
-} // namespace clang
diff --git a/clang-tools-extra/clangd/Config.h b/clang-tools-extra/clangd/Config.h
deleted file mode 100644
index c1c2cbb..0000000
--- a/clang-tools-extra/clangd/Config.h
+++ /dev/null
@@ -1,64 +0,0 @@
-//===--- Config.h - User configuration of clangd behavior --------*- C++-*-===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-//
-// Various clangd features have configurable behaviour (or can be disabled).
-// This file defines "resolved" configuration seen by features within clangd.
-// For example, settings may vary per-file, the resolved Config only contains
-// settings that apply to the current file.
-//
-// This is distinct from how the config is specified by the user (Fragment)
-// interpreted (CompiledFragment), and combined (Provider).
-// ConfigFragment.h describes the steps to add a new configuration option.
-//
-// Because this structure is shared throughout clangd, it's a potential source
-// of layering problems. Config should be expressed in terms of simple
-// vocubulary types where possible.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANGD_CONFIG_H
-#define LLVM_CLANG_TOOLS_EXTRA_CLANGD_CONFIG_H
-
-#include "support/Context.h"
-#include "llvm/ADT/FunctionExtras.h"
-#include <string>
-#include <vector>
-
-namespace clang {
-namespace clangd {
-
-/// Settings that express user/project preferences and control clangd behavior.
-///
-/// Generally, features should consume config() and the caller is responsible
-/// for setting it appropriately. In practice these callers are ClangdServer,
-/// TUScheduler, and BackgroundQueue.
-struct Config {
-  /// Context key which can be used to set the current Config.
-  static clangd::Key<Config> Key;
-
-  Config() = default;
-  Config(const Config &) = delete;
-  Config &operator=(const Config &) = delete;
-  Config(Config &&) = default;
-  Config &operator=(Config &&) = default;
-
-  /// Controls how the compile command for the current file is determined.
-  struct {
-    // Edits to apply to the compile command, in sequence.
-    // FIXME: these functions need to be const-callable. For now, const_cast.
-    std::vector<llvm::unique_function<void(std::vector<std::string> &)>> Edits;
-  } CompileFlags;
-};
-
-/// Returns the Config of the current Context, or an empty configuration.
-const Config &config();
-
-} // namespace clangd
-} // namespace clang
-
-#endif
diff --git a/clang-tools-extra/clangd/unittests/CompileCommandsTests.cpp b/clang-tools-extra/clangd/unittests/CompileCommandsTests.cpp
index ba656cd..d064c94 100644
--- a/clang-tools-extra/clangd/unittests/CompileCommandsTests.cpp
+++ b/clang-tools-extra/clangd/unittests/CompileCommandsTests.cpp
@@ -7,9 +7,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "CompileCommands.h"
-#include "Config.h"
 #include "TestFS.h"
-#include "support/Context.h"
 
 #include "llvm/ADT/ScopeExit.h"
 #include "llvm/ADT/StringExtras.h"
@@ -187,26 +185,6 @@ TEST(CommandMangler, ClangPathResolve) {
 }
 #endif
 
-TEST(CommandMangler, ConfigEdits) {
-  auto Mangler = CommandMangler::forTests();
-  std::vector<std::string> Cmd = {"clang++", "foo.cc"};
-  {
-    Config Cfg;
-    Cfg.CompileFlags.Edits.push_back([](std::vector<std::string> &Argv) {
-      for (auto &Arg : Argv)
-        for (char &C : Arg)
-          C = llvm::toUpper(C);
-    });
-    Cfg.CompileFlags.Edits.push_back(
-        [](std::vector<std::string> &Argv) { Argv.push_back("--hello"); });
-    WithContextValue WithConfig(Config::Key, std::move(Cfg));
-    Mangler.adjust(Cmd);
-  }
-  // Edits are applied in given order and before other mangling.
-  EXPECT_THAT(Cmd,
-              ElementsAre("CLANG++", "FOO.CC", "--hello", "-fsyntax-only"));
-}
-
 } // namespace
 } // namespace clangd
 } // namespace clang