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-rw-r--r--third_party/abseil_cpp/absl/flags/internal/registry.cc350
1 files changed, 0 insertions, 350 deletions
diff --git a/third_party/abseil_cpp/absl/flags/internal/registry.cc b/third_party/abseil_cpp/absl/flags/internal/registry.cc
deleted file mode 100644
index 3b941f04c21d..000000000000
--- a/third_party/abseil_cpp/absl/flags/internal/registry.cc
+++ /dev/null
@@ -1,350 +0,0 @@
-//
-// Copyright 2019 The Abseil Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      https://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-#include "absl/flags/internal/registry.h"
-
-#include <assert.h>
-#include <stdlib.h>
-
-#include <functional>
-#include <map>
-#include <memory>
-#include <string>
-#include <utility>
-#include <vector>
-
-#include "absl/base/config.h"
-#include "absl/base/internal/raw_logging.h"
-#include "absl/base/thread_annotations.h"
-#include "absl/flags/internal/commandlineflag.h"
-#include "absl/flags/internal/private_handle_accessor.h"
-#include "absl/flags/usage_config.h"
-#include "absl/strings/str_cat.h"
-#include "absl/strings/string_view.h"
-#include "absl/synchronization/mutex.h"
-
-// --------------------------------------------------------------------
-// FlagRegistry implementation
-//    A FlagRegistry holds all flag objects indexed
-//    by their names so that if you know a flag's name you can access or
-//    set it.
-
-namespace absl {
-ABSL_NAMESPACE_BEGIN
-namespace flags_internal {
-
-// --------------------------------------------------------------------
-// FlagRegistry
-//    A FlagRegistry singleton object holds all flag objects indexed
-//    by their names so that if you know a flag's name (as a C
-//    string), you can access or set it.  If the function is named
-//    FooLocked(), you must own the registry lock before calling
-//    the function; otherwise, you should *not* hold the lock, and
-//    the function will acquire it itself if needed.
-// --------------------------------------------------------------------
-
-class FlagRegistry {
- public:
-  FlagRegistry() = default;
-  ~FlagRegistry() = default;
-
-  // Store a flag in this registry.  Takes ownership of *flag.
-  void RegisterFlag(CommandLineFlag* flag);
-
-  void Lock() ABSL_EXCLUSIVE_LOCK_FUNCTION(lock_) { lock_.Lock(); }
-  void Unlock() ABSL_UNLOCK_FUNCTION(lock_) { lock_.Unlock(); }
-
-  // Returns the flag object for the specified name, or nullptr if not found.
-  // Will emit a warning if a 'retired' flag is specified.
-  CommandLineFlag* FindFlagLocked(absl::string_view name);
-
-  // Returns the retired flag object for the specified name, or nullptr if not
-  // found or not retired.  Does not emit a warning.
-  CommandLineFlag* FindRetiredFlagLocked(absl::string_view name);
-
-  static FlagRegistry* GlobalRegistry();  // returns a singleton registry
-
- private:
-  friend class FlagSaverImpl;  // reads all the flags in order to copy them
-  friend void ForEachFlagUnlocked(
-      std::function<void(CommandLineFlag*)> visitor);
-
-  // The map from name to flag, for FindFlagLocked().
-  using FlagMap = std::map<absl::string_view, CommandLineFlag*>;
-  using FlagIterator = FlagMap::iterator;
-  using FlagConstIterator = FlagMap::const_iterator;
-  FlagMap flags_;
-
-  absl::Mutex lock_;
-
-  // Disallow
-  FlagRegistry(const FlagRegistry&);
-  FlagRegistry& operator=(const FlagRegistry&);
-};
-
-FlagRegistry* FlagRegistry::GlobalRegistry() {
-  static FlagRegistry* global_registry = new FlagRegistry;
-  return global_registry;
-}
-
-namespace {
-
-class FlagRegistryLock {
- public:
-  explicit FlagRegistryLock(FlagRegistry* fr) : fr_(fr) { fr_->Lock(); }
-  ~FlagRegistryLock() { fr_->Unlock(); }
-
- private:
-  FlagRegistry* const fr_;
-};
-
-void DestroyRetiredFlag(CommandLineFlag* flag);
-}  // namespace
-
-void FlagRegistry::RegisterFlag(CommandLineFlag* flag) {
-  FlagRegistryLock registry_lock(this);
-  std::pair<FlagIterator, bool> ins =
-      flags_.insert(FlagMap::value_type(flag->Name(), flag));
-  if (ins.second == false) {  // means the name was already in the map
-    CommandLineFlag* old_flag = ins.first->second;
-    if (flag->IsRetired() != old_flag->IsRetired()) {
-      // All registrations must agree on the 'retired' flag.
-      flags_internal::ReportUsageError(
-          absl::StrCat(
-              "Retired flag '", flag->Name(),
-              "' was defined normally in file '",
-              (flag->IsRetired() ? old_flag->Filename() : flag->Filename()),
-              "'."),
-          true);
-    } else if (flags_internal::PrivateHandleAccessor::TypeId(*flag) !=
-               flags_internal::PrivateHandleAccessor::TypeId(*old_flag)) {
-      flags_internal::ReportUsageError(
-          absl::StrCat("Flag '", flag->Name(),
-                       "' was defined more than once but with "
-                       "differing types. Defined in files '",
-                       old_flag->Filename(), "' and '", flag->Filename(), "'."),
-          true);
-    } else if (old_flag->IsRetired()) {
-      // Retired flag can just be deleted.
-      DestroyRetiredFlag(flag);
-      return;
-    } else if (old_flag->Filename() != flag->Filename()) {
-      flags_internal::ReportUsageError(
-          absl::StrCat("Flag '", flag->Name(),
-                       "' was defined more than once (in files '",
-                       old_flag->Filename(), "' and '", flag->Filename(),
-                       "')."),
-          true);
-    } else {
-      flags_internal::ReportUsageError(
-          absl::StrCat(
-              "Something wrong with flag '", flag->Name(), "' in file '",
-              flag->Filename(), "'. One possibility: file '", flag->Filename(),
-              "' is being linked both statically and dynamically into this "
-              "executable. e.g. some files listed as srcs to a test and also "
-              "listed as srcs of some shared lib deps of the same test."),
-          true);
-    }
-    // All cases above are fatal, except for the retired flags.
-    std::exit(1);
-  }
-}
-
-CommandLineFlag* FlagRegistry::FindFlagLocked(absl::string_view name) {
-  FlagConstIterator i = flags_.find(name);
-  if (i == flags_.end()) {
-    return nullptr;
-  }
-
-  if (i->second->IsRetired()) {
-    flags_internal::ReportUsageError(
-        absl::StrCat("Accessing retired flag '", name, "'"), false);
-  }
-
-  return i->second;
-}
-
-CommandLineFlag* FlagRegistry::FindRetiredFlagLocked(absl::string_view name) {
-  FlagConstIterator i = flags_.find(name);
-  if (i == flags_.end() || !i->second->IsRetired()) {
-    return nullptr;
-  }
-
-  return i->second;
-}
-
-// --------------------------------------------------------------------
-// FlagSaver
-// FlagSaverImpl
-//    This class stores the states of all flags at construct time,
-//    and restores all flags to that state at destruct time.
-//    Its major implementation challenge is that it never modifies
-//    pointers in the 'main' registry, so global FLAG_* vars always
-//    point to the right place.
-// --------------------------------------------------------------------
-
-class FlagSaverImpl {
- public:
-  FlagSaverImpl() = default;
-  FlagSaverImpl(const FlagSaverImpl&) = delete;
-  void operator=(const FlagSaverImpl&) = delete;
-
-  // Saves the flag states from the flag registry into this object.
-  // It's an error to call this more than once.
-  void SaveFromRegistry() {
-    assert(backup_registry_.empty());  // call only once!
-    flags_internal::ForEachFlag([&](flags_internal::CommandLineFlag* flag) {
-      if (auto flag_state =
-              flags_internal::PrivateHandleAccessor::SaveState(flag)) {
-        backup_registry_.emplace_back(std::move(flag_state));
-      }
-    });
-  }
-
-  // Restores the saved flag states into the flag registry.
-  void RestoreToRegistry() {
-    for (const auto& flag_state : backup_registry_) {
-      flag_state->Restore();
-    }
-  }
-
- private:
-  std::vector<std::unique_ptr<flags_internal::FlagStateInterface>>
-      backup_registry_;
-};
-
-FlagSaver::FlagSaver() : impl_(new FlagSaverImpl) { impl_->SaveFromRegistry(); }
-
-void FlagSaver::Ignore() {
-  delete impl_;
-  impl_ = nullptr;
-}
-
-FlagSaver::~FlagSaver() {
-  if (!impl_) return;
-
-  impl_->RestoreToRegistry();
-  delete impl_;
-}
-
-// --------------------------------------------------------------------
-
-CommandLineFlag* FindCommandLineFlag(absl::string_view name) {
-  if (name.empty()) return nullptr;
-  FlagRegistry* const registry = FlagRegistry::GlobalRegistry();
-  FlagRegistryLock frl(registry);
-
-  return registry->FindFlagLocked(name);
-}
-
-CommandLineFlag* FindRetiredFlag(absl::string_view name) {
-  FlagRegistry* const registry = FlagRegistry::GlobalRegistry();
-  FlagRegistryLock frl(registry);
-
-  return registry->FindRetiredFlagLocked(name);
-}
-
-// --------------------------------------------------------------------
-
-void ForEachFlagUnlocked(std::function<void(CommandLineFlag*)> visitor) {
-  FlagRegistry* const registry = FlagRegistry::GlobalRegistry();
-  for (FlagRegistry::FlagConstIterator i = registry->flags_.begin();
-       i != registry->flags_.end(); ++i) {
-    visitor(i->second);
-  }
-}
-
-void ForEachFlag(std::function<void(CommandLineFlag*)> visitor) {
-  FlagRegistry* const registry = FlagRegistry::GlobalRegistry();
-  FlagRegistryLock frl(registry);
-  ForEachFlagUnlocked(visitor);
-}
-
-// --------------------------------------------------------------------
-
-bool RegisterCommandLineFlag(CommandLineFlag* flag) {
-  FlagRegistry::GlobalRegistry()->RegisterFlag(flag);
-  return true;
-}
-
-// --------------------------------------------------------------------
-
-namespace {
-
-class RetiredFlagObj final : public flags_internal::CommandLineFlag {
- public:
-  constexpr RetiredFlagObj(const char* name, FlagFastTypeId type_id)
-      : name_(name), type_id_(type_id) {}
-
- private:
-  absl::string_view Name() const override { return name_; }
-  std::string Filename() const override { return "RETIRED"; }
-  FlagFastTypeId TypeId() const override { return type_id_; }
-  std::string Help() const override { return ""; }
-  bool IsRetired() const override { return true; }
-  bool IsSpecifiedOnCommandLine() const override { return false; }
-  std::string DefaultValue() const override { return ""; }
-  std::string CurrentValue() const override { return ""; }
-
-  // Any input is valid
-  bool ValidateInputValue(absl::string_view) const override { return true; }
-
-  std::unique_ptr<flags_internal::FlagStateInterface> SaveState() override {
-    return nullptr;
-  }
-
-  bool ParseFrom(absl::string_view, flags_internal::FlagSettingMode,
-                 flags_internal::ValueSource, std::string*) override {
-    return false;
-  }
-
-  void CheckDefaultValueParsingRoundtrip() const override {}
-
-  void Read(void*) const override {}
-
-  // Data members
-  const char* const name_;
-  const FlagFastTypeId type_id_;
-};
-
-void DestroyRetiredFlag(flags_internal::CommandLineFlag* flag) {
-  assert(flag->IsRetired());
-  delete static_cast<RetiredFlagObj*>(flag);
-}
-
-}  // namespace
-
-bool Retire(const char* name, FlagFastTypeId type_id) {
-  auto* flag = new flags_internal::RetiredFlagObj(name, type_id);
-  FlagRegistry::GlobalRegistry()->RegisterFlag(flag);
-  return true;
-}
-
-// --------------------------------------------------------------------
-
-bool IsRetiredFlag(absl::string_view name, bool* type_is_bool) {
-  assert(!name.empty());
-  CommandLineFlag* flag = flags_internal::FindRetiredFlag(name);
-  if (flag == nullptr) {
-    return false;
-  }
-  assert(type_is_bool);
-  *type_is_bool = flag->IsOfType<bool>();
-  return true;
-}
-
-}  // namespace flags_internal
-ABSL_NAMESPACE_END
-}  // namespace absl