Export of internal Abseil changes

--
20b3acaff75d05315f272747956b01405adccafb by Greg Falcon <gfalcon@google.com>:

Re-import of CCTZ from GitHub, with new ABSL_NAMESPACE_ transform applied.

PiperOrigin-RevId: 285564474

--
4d9e3fcabcea33c8b0b69f094ad2eddc0fa19557 by Derek Mauro <dmauro@google.com>:

Moves the disabling of a warning to before the function begins.

MSVC apparently requires this for warnings in the range 4700-4999.
https://docs.microsoft.com/en-us/cpp/preprocessor/warning?redirectedfrom=MSDN&view=vs-2019

PiperOrigin-RevId: 285516232

--
4a060cbeda76e89693c50276ae5b62cbf0fff39a by Derek Mauro <dmauro@google.com>:

MSVC: Fixes uniform_real_distribution_test in opt mode

Disables a constant arithmetic overflow warning in a test that tests
the behavior on overflow. This should be tested because a user might
have this warning disabled.

PiperOrigin-RevId: 285452242

--
548ab2f4cbe59bd6f6bf493af4f9ea765c4fa949 by Andy Soffer <asoffer@google.com>:

Release absl::bind_front, a C++11-compliant work-alike type for the C++20
std::bind_front.

PiperOrigin-RevId: 285247872
GitOrigin-RevId: 20b3acaff75d05315f272747956b01405adccafb
Change-Id: I00fe45939246cba9bfc7be375d67787d2eb57cd3

absl/functional/BUILD.bazel

@@ -26,6 +26,32 @@ package(default_visibility = ["//visibility:public"])
 
 licenses(["notice"])  # Apache 2.0
 
+cc_library(
+    name = "bind_front",
+    srcs = ["internal/front_binder.h"],
+    hdrs = ["bind_front.h"],
+    copts = ABSL_DEFAULT_COPTS,
+    linkopts = ABSL_DEFAULT_LINKOPTS,
+    deps = [
+        "//absl/base:base_internal",
+        "//absl/container:compressed_tuple",
+        "//absl/meta:type_traits",
+        "//absl/utility",
+    ],
+)
+
+cc_test(
+    name = "bind_front_test",
+    srcs = ["bind_front_test.cc"],
+    copts = ABSL_TEST_COPTS,
+    linkopts = ABSL_DEFAULT_LINKOPTS,
+    deps = [
+        ":bind_front",
+        "//absl/memory",
+        "@com_google_googletest//:gtest_main",
+    ],
+)
+
 cc_library(
     name = "function_ref",
     srcs = ["internal/function_ref.h"],

absl/functional/bind_front.h

@@ -0,0 +1,152 @@
+// Copyright 2018 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.
+
+// `absl::bind_front()` returns a functor by binding a number of arguments to
+// the front of a provided functor, allowing you to avoid known problems with
+// `std::bind()`.  It is a form of partial function application
+// https://en.wikipedia.org/wiki/Partial_application.
+//
+// Like `std::bind()` it is implicitly convertible to `std::function`.  In
+// particular, it may be used as a simpler replacement for `std::bind()` in most
+// cases, as it does not require  placeholders to be specified.  More
+// importantly, it provides more reliable correctness guarantees than
+// `std::bind()`.
+//
+// absl::bind_front(a...) can be seen as storing the results of
+// std::make_tuple(a...).
+//
+// Example: Binding a free function.
+//
+//   int Minus(int a, int b) { return a - b; }
+//
+//   assert(absl::bind_front(Minus)(3, 2) == 3 - 2);
+//   assert(absl::bind_front(Minus, 3)(2) == 3 - 2);
+//   assert(absl::bind_front(Minus, 3, 2)() == 3 - 2);
+//
+// Example: Binding a member function.
+//
+//   struct Math {
+//     int Double(int a) const { return 2 * a; }
+//   };
+//
+//   Math math;
+//
+//   assert(absl::bind_front(&Math::Double)(&math, 3) == 2 * 3);
+//   // Stores a pointer to math inside the functor.
+//   assert(absl::bind_front(&Math::Double, &math)(3) == 2 * 3);
+//   // Stores a copy of math inside the functor.
+//   assert(absl::bind_front(&Math::Double, math)(3) == 2 * 3);
+//   // Stores std::unique_ptr<Math> inside the functor.
+//   assert(absl::bind_front(&Math::Double,
+//                           std::unique_ptr<Math>(new Math))(3) == 2 * 3);
+//
+// Example: Using `absl::bind_front()`, instead of `std::bind()`, with
+//          `std::function`.
+//
+//   class FileReader {
+//    public:
+//     void ReadFileAsync(const std::string& filename, std::string* content,
+//                        const std::function<void()>& done) {
+//       // Calls Executor::Schedule(std::function<void()>).
+//       Executor::DefaultExecutor()->Schedule(
+//           absl::bind_front(&FileReader::BlockingRead, this,
+//                            filename, content, done));
+//     }
+//
+//    private:
+//     void BlockingRead(const std::string& filename, std::string* content,
+//                       const std::function<void()>& done) {
+//       CHECK_OK(file::GetContents(filename, content, {}));
+//       done();
+//     }
+//   };
+//
+// `absl::bind_front()` stores bound arguments explicitly using the type passed
+// rather than implicitly based on the type accepted by its functor.
+//
+// Example: Binding arguments explicitly.
+//
+//   void LogStringView(absl::string_view sv) {
+//     LOG(INFO) << sv;
+//   }
+//
+//   Executor* e = Executor::DefaultExecutor();
+//   std::string s = "hello";
+//   absl::string_view sv = s;
+//
+//   // absl::bind_front(LogStringView, arg) makes a copy of arg and stores it.
+//   e->Schedule(absl::bind_front(LogStringView, sv)); // ERROR: dangling
+//                                                     // string_view.
+//
+//   e->Schedule(absl::bind_front(LogStringView, s));  // OK: stores a copy of
+//                                                     // s.
+//
+// To store some of the arguments passed to `absl::bind_front()` by reference,
+//  use std::ref()` and `std::cref()`.
+//
+// Example: Storing some of the bound arguments by reference.
+//
+//   class Service {
+//    public:
+//     void Serve(const Request& req, std::function<void()>* done) {
+//       // The request protocol buffer won't be deleted until done is called.
+//       // It's safe to store a reference to it inside the functor.
+//       Executor::DefaultExecutor()->Schedule(
+//           absl::bind_front(&Service::BlockingServe, this, std::cref(req),
+//           done));
+//     }
+//
+//    private:
+//     void BlockingServe(const Request& req, std::function<void()>* done);
+//   };
+//
+// Example: Storing bound arguments by reference.
+//
+//   void Print(const string& a, const string& b) { LOG(INFO) << a << b; }
+//
+//   std::string hi = "Hello, ";
+//   std::vector<std::string> names = {"Chuk", "Gek"};
+//   // Doesn't copy hi.
+//   for_each(names.begin(), names.end(),
+//            absl::bind_front(Print, std::ref(hi)));
+//
+//   // DO NOT DO THIS: the functor may outlive "hi", resulting in
+//   // dangling references.
+//   foo->DoInFuture(absl::bind_front(Print, std::ref(hi), "Guest"));  // BAD!
+//   auto f = absl::bind_front(Print, std::ref(hi), "Guest"); // BAD!
+
+#ifndef ABSL_FUNCTIONAL_BIND_FRONT_H_
+#define ABSL_FUNCTIONAL_BIND_FRONT_H_
+
+#include "absl/functional/internal/front_binder.h"
+#include "absl/utility/utility.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+
+// Binds the first N arguments of an invocable object and stores them by value,
+// except types of std::reference_wrapper which are 'unwound' and stored by
+// reference.
+template <class F, class... BoundArgs>
+constexpr functional_internal::bind_front_t<F, BoundArgs...> bind_front(
+    F&& func, BoundArgs&&... args) {
+  return functional_internal::bind_front_t<F, BoundArgs...>(
+      absl::in_place, absl::forward<F>(func),
+      absl::forward<BoundArgs>(args)...);
+}
+
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_FUNCTIONAL_BIND_FRONT_H_

absl/functional/bind_front_test.cc

@@ -0,0 +1,231 @@
+// Copyright 2018 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/functional/bind_front.h"
+
+#include <stddef.h>
+
+#include <functional>
+#include <memory>
+#include <string>
+
+#include "gmock/gmock.h"
+#include "gtest/gtest.h"
+#include "absl/memory/memory.h"
+
+namespace {
+
+char CharAt(const char* s, size_t index) { return s[index]; }
+
+TEST(BindTest, Basics) {
+  EXPECT_EQ('C', absl::bind_front(CharAt)("ABC", 2));
+  EXPECT_EQ('C', absl::bind_front(CharAt, "ABC")(2));
+  EXPECT_EQ('C', absl::bind_front(CharAt, "ABC", 2)());
+}
+
+TEST(BindTest, Lambda) {
+  auto lambda = [](int x, int y, int z) { return x + y + z; };
+  EXPECT_EQ(6, absl::bind_front(lambda)(1, 2, 3));
+  EXPECT_EQ(6, absl::bind_front(lambda, 1)(2, 3));
+  EXPECT_EQ(6, absl::bind_front(lambda, 1, 2)(3));
+  EXPECT_EQ(6, absl::bind_front(lambda, 1, 2, 3)());
+}
+
+struct Functor {
+  std::string operator()() & { return "&"; }
+  std::string operator()() const& { return "const&"; }
+  std::string operator()() && { return "&&"; }
+  std::string operator()() const&& { return "const&&"; }
+};
+
+TEST(BindTest, PerfectForwardingOfBoundArgs) {
+  auto f = absl::bind_front(Functor());
+  const auto& cf = f;
+  EXPECT_EQ("&", f());
+  EXPECT_EQ("const&", cf());
+  EXPECT_EQ("&&", std::move(f)());
+  EXPECT_EQ("const&&", std::move(cf)());
+}
+
+struct ArgDescribe {
+  std::string operator()(int&) const { return "&"; }             // NOLINT
+  std::string operator()(const int&) const { return "const&"; }  // NOLINT
+  std::string operator()(int&&) const { return "&&"; }
+  std::string operator()(const int&&) const { return "const&&"; }
+};
+
+TEST(BindTest, PerfectForwardingOfFreeArgs) {
+  ArgDescribe f;
+  int i;
+  EXPECT_EQ("&", absl::bind_front(f)(static_cast<int&>(i)));
+  EXPECT_EQ("const&", absl::bind_front(f)(static_cast<const int&>(i)));
+  EXPECT_EQ("&&", absl::bind_front(f)(static_cast<int&&>(i)));
+  EXPECT_EQ("const&&", absl::bind_front(f)(static_cast<const int&&>(i)));
+}
+
+struct NonCopyableFunctor {
+  NonCopyableFunctor() = default;
+  NonCopyableFunctor(const NonCopyableFunctor&) = delete;
+  NonCopyableFunctor& operator=(const NonCopyableFunctor&) = delete;
+  const NonCopyableFunctor* operator()() const { return this; }
+};
+
+TEST(BindTest, RefToFunctor) {
+  // It won't copy/move the functor and use the original object.
+  NonCopyableFunctor ncf;
+  auto bound_ncf = absl::bind_front(std::ref(ncf));
+  auto bound_ncf_copy = bound_ncf;
+  EXPECT_EQ(&ncf, bound_ncf_copy());
+}
+
+struct Struct {
+  std::string value;
+};
+
+TEST(BindTest, StoreByCopy) {
+  Struct s = {"hello"};
+  auto f = absl::bind_front(&Struct::value, s);
+  auto g = f;
+  EXPECT_EQ("hello", f());
+  EXPECT_EQ("hello", g());
+  EXPECT_NE(&s.value, &f());
+  EXPECT_NE(&s.value, &g());
+  EXPECT_NE(&g(), &f());
+}
+
+struct NonCopyable {
+  explicit NonCopyable(const std::string& s) : value(s) {}
+  NonCopyable(const NonCopyable&) = delete;
+  NonCopyable& operator=(const NonCopyable&) = delete;
+
+  std::string value;
+};
+
+const std::string& GetNonCopyableValue(const NonCopyable& n) { return n.value; }
+
+TEST(BindTest, StoreByRef) {
+  NonCopyable s("hello");
+  auto f = absl::bind_front(&GetNonCopyableValue, std::ref(s));
+  EXPECT_EQ("hello", f());
+  EXPECT_EQ(&s.value, &f());
+  auto g = std::move(f);  // NOLINT
+  EXPECT_EQ("hello", g());
+  EXPECT_EQ(&s.value, &g());
+  s.value = "goodbye";
+  EXPECT_EQ("goodbye", g());
+}
+
+TEST(BindTest, StoreByCRef) {
+  NonCopyable s("hello");
+  auto f = absl::bind_front(&GetNonCopyableValue, std::cref(s));
+  EXPECT_EQ("hello", f());
+  EXPECT_EQ(&s.value, &f());
+  auto g = std::move(f);  // NOLINT
+  EXPECT_EQ("hello", g());
+  EXPECT_EQ(&s.value, &g());
+  s.value = "goodbye";
+  EXPECT_EQ("goodbye", g());
+}
+
+const std::string& GetNonCopyableValueByWrapper(
+    std::reference_wrapper<NonCopyable> n) {
+  return n.get().value;
+}
+
+TEST(BindTest, StoreByRefInvokeByWrapper) {
+  NonCopyable s("hello");
+  auto f = absl::bind_front(GetNonCopyableValueByWrapper, std::ref(s));
+  EXPECT_EQ("hello", f());
+  EXPECT_EQ(&s.value, &f());
+  auto g = std::move(f);
+  EXPECT_EQ("hello", g());
+  EXPECT_EQ(&s.value, &g());
+  s.value = "goodbye";
+  EXPECT_EQ("goodbye", g());
+}
+
+TEST(BindTest, StoreByPointer) {
+  NonCopyable s("hello");
+  auto f = absl::bind_front(&NonCopyable::value, &s);
+  EXPECT_EQ("hello", f());
+  EXPECT_EQ(&s.value, &f());
+  auto g = std::move(f);
+  EXPECT_EQ("hello", g());
+  EXPECT_EQ(&s.value, &g());
+}
+
+int Sink(std::unique_ptr<int> p) {
+  return *p;
+}
+
+std::unique_ptr<int> Factory(int n) { return absl::make_unique<int>(n); }
+
+TEST(BindTest, NonCopyableArg) {
+  EXPECT_EQ(42, absl::bind_front(Sink)(absl::make_unique<int>(42)));
+  EXPECT_EQ(42, absl::bind_front(Sink, absl::make_unique<int>(42))());
+}
+
+TEST(BindTest, NonCopyableResult) {
+  EXPECT_THAT(absl::bind_front(Factory)(42), ::testing::Pointee(42));
+  EXPECT_THAT(absl::bind_front(Factory, 42)(), ::testing::Pointee(42));
+}
+
+// is_copy_constructible<FalseCopyable<unique_ptr<T>> is true but an attempt to
+// instantiate the copy constructor leads to a compile error. This is similar
+// to how standard containers behave.
+template <class T>
+struct FalseCopyable {
+  FalseCopyable() {}
+  FalseCopyable(const FalseCopyable& other) : m(other.m) {}
+  FalseCopyable(FalseCopyable&& other) : m(std::move(other.m)) {}
+  T m;
+};
+
+int GetMember(FalseCopyable<std::unique_ptr<int>> x) { return *x.m; }
+
+TEST(BindTest, WrappedMoveOnly) {
+  FalseCopyable<std::unique_ptr<int>> x;
+  x.m = absl::make_unique<int>(42);
+  auto f = absl::bind_front(&GetMember, std::move(x));
+  EXPECT_EQ(42, std::move(f)());
+}
+
+int Plus(int a, int b) { return a + b; }
+
+TEST(BindTest, ConstExpr) {
+  constexpr auto f = absl::bind_front(CharAt);
+  EXPECT_EQ(f("ABC", 1), 'B');
+  static constexpr int five = 5;
+  constexpr auto plus5 = absl::bind_front(Plus, five);
+  EXPECT_EQ(plus5(1), 6);
+
+  // There seems to be a bug in MSVC dealing constexpr construction of
+  // char[]. Notice 'plus5' above; 'int' works just fine.
+#if !(defined(_MSC_VER) && _MSC_VER < 1910)
+  static constexpr char data[] = "DEF";
+  constexpr auto g = absl::bind_front(CharAt, data);
+  EXPECT_EQ(g(1), 'E');
+#endif
+}
+
+struct ManglingCall {
+  int operator()(int, double, std::string) const { return 0; }
+};
+
+TEST(BindTest, Mangling) {
+  // We just want to generate a particular instantiation to see its mangling.
+  absl::bind_front(ManglingCall{}, 1, 3.3)("A");
+}
+
+}  // namespace

absl/functional/internal/front_binder.h

@@ -0,0 +1,95 @@
+// Copyright 2018 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.
+
+// Implementation details for `absl::bind_front()`.
+
+#ifndef ABSL_FUNCTIONAL_INTERNAL_FRONT_BINDER_H_
+#define ABSL_FUNCTIONAL_INTERNAL_FRONT_BINDER_H_
+
+#include <cstddef>
+#include <type_traits>
+#include <utility>
+
+#include "absl/base/internal/invoke.h"
+#include "absl/container/internal/compressed_tuple.h"
+#include "absl/meta/type_traits.h"
+#include "absl/utility/utility.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace functional_internal {
+
+// Invoke the method, expanding the tuple of bound arguments.
+template <class R, class Tuple, size_t... Idx, class... Args>
+R Apply(Tuple&& bound, absl::index_sequence<Idx...>, Args&&... free) {
+  return base_internal::Invoke(
+      absl::forward<Tuple>(bound).template get<Idx>()...,
+      absl::forward<Args>(free)...);
+}
+
+template <class F, class... BoundArgs>
+class FrontBinder {
+  using BoundArgsT = absl::container_internal::CompressedTuple<F, BoundArgs...>;
+  using Idx = absl::make_index_sequence<sizeof...(BoundArgs) + 1>;
+
+  BoundArgsT bound_args_;
+
+ public:
+  template <class... Ts>
+  constexpr explicit FrontBinder(absl::in_place_t, Ts&&... ts)
+      : bound_args_(absl::forward<Ts>(ts)...) {}
+
+  template <class... FreeArgs,
+            class R = base_internal::InvokeT<F&, BoundArgs&..., FreeArgs&&...>>
+  R operator()(FreeArgs&&... free_args) & {
+    return functional_internal::Apply<R>(bound_args_, Idx(),
+                                         absl::forward<FreeArgs>(free_args)...);
+  }
+
+  template <class... FreeArgs,
+            class R = base_internal::InvokeT<const F&, const BoundArgs&...,
+                                             FreeArgs&&...>>
+  R operator()(FreeArgs&&... free_args) const& {
+    return functional_internal::Apply<R>(bound_args_, Idx(),
+                                         absl::forward<FreeArgs>(free_args)...);
+  }
+
+  template <class... FreeArgs, class R = base_internal::InvokeT<
+                                   F&&, BoundArgs&&..., FreeArgs&&...>>
+  R operator()(FreeArgs&&... free_args) && {
+    // This overload is called when *this is an rvalue. If some of the bound
+    // arguments are stored by value or rvalue reference, we move them.
+    return functional_internal::Apply<R>(absl::move(bound_args_), Idx(),
+                                         absl::forward<FreeArgs>(free_args)...);
+  }
+
+  template <class... FreeArgs,
+            class R = base_internal::InvokeT<const F&&, const BoundArgs&&...,
+                                             FreeArgs&&...>>
+  R operator()(FreeArgs&&... free_args) const&& {
+    // This overload is called when *this is an rvalue. If some of the bound
+    // arguments are stored by value or rvalue reference, we move them.
+    return functional_internal::Apply<R>(absl::move(bound_args_), Idx(),
+                                         absl::forward<FreeArgs>(free_args)...);
+  }
+};
+
+template <class F, class... BoundArgs>
+using bind_front_t = FrontBinder<decay_t<F>, absl::decay_t<BoundArgs>...>;
+
+}  // namespace functional_internal
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_FUNCTIONAL_INTERNAL_FRONT_BINDER_H_

absl/random/uniform_real_distribution_test.cc

@@ -161,6 +161,10 @@ TYPED_TEST(UniformRealDistributionTest, ParamSerializeTest) {
   }
 }
 
+#ifdef _MSC_VER
+#pragma warning(push)
+#pragma warning(disable:4756)  // Constant arithmetic overflow.
+#endif
 TYPED_TEST(UniformRealDistributionTest, ViolatesPreconditionsDeathTest) {
 #if GTEST_HAS_DEATH_TEST
   // Hi < Lo
@@ -195,6 +199,9 @@ TYPED_TEST(UniformRealDistributionTest, ViolatesPreconditionsDeathTest) {
   }
 #endif  // NDEBUG
 }
+#ifdef _MSC_VER
+#pragma warning(pop)  // warning(disable:4756)
+#endif
 
 TYPED_TEST(UniformRealDistributionTest, TestMoments) {
   constexpr int kSize = 1000000;

absl/time/internal/cctz/BUILD.bazel

@@ -42,6 +42,7 @@ cc_library(
     ],
     textual_hdrs = ["include/cctz/civil_time_detail.h"],
     visibility = ["//visibility:public"],
+    deps = ["//absl/base:config"],
 )
 
 cc_library(
@@ -78,7 +79,10 @@ cc_library(
         "//conditions:default": [],
     }),
     visibility = ["//visibility:public"],
-    deps = [":civil_time"],
+    deps = [
+        ":civil_time",
+        "//absl/base:config",
+    ],
 )
 
 ### tests
@@ -89,6 +93,7 @@ cc_test(
     srcs = ["src/civil_time_test.cc"],
     deps = [
         ":civil_time",
+        "//absl/base:config",
         "@com_google_googletest//:gtest_main",
     ],
 )
@@ -106,6 +111,7 @@ cc_test(
     deps = [
         ":civil_time",
         ":time_zone",
+        "//absl/base:config",
         "@com_google_googletest//:gtest_main",
     ],
 )
@@ -124,6 +130,7 @@ cc_test(
     deps = [
         ":civil_time",
         ":time_zone",
+        "//absl/base:config",
         "@com_google_googletest//:gtest_main",
     ],
 )
@@ -144,6 +151,7 @@ cc_test(
     deps = [
         ":civil_time",
         ":time_zone",
+        "//absl/base:config",
         "@com_github_google_benchmark//:benchmark_main",
     ],
 )

absl/time/internal/cctz/include/cctz/civil_time.h

@@ -15,9 +15,11 @@
 #ifndef ABSL_TIME_INTERNAL_CCTZ_CIVIL_TIME_H_
 #define ABSL_TIME_INTERNAL_CCTZ_CIVIL_TIME_H_
 
+#include "absl/base/config.h"
 #include "absl/time/internal/cctz/include/cctz/civil_time_detail.h"
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace time_internal {
 namespace cctz {
 
@@ -324,6 +326,7 @@ using detail::get_yearday;
 
 }  // namespace cctz
 }  // namespace time_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 #endif  // ABSL_TIME_INTERNAL_CCTZ_CIVIL_TIME_H_

absl/time/internal/cctz/include/cctz/civil_time_detail.h

@@ -20,6 +20,8 @@
 #include <ostream>
 #include <type_traits>
 
+#include "absl/base/config.h"
+
 // Disable constexpr support unless we are in C++14 mode.
 #if __cpp_constexpr >= 201304 || (defined(_MSC_VER) && _MSC_VER >= 1910)
 #define CONSTEXPR_D constexpr  // data
@@ -32,6 +34,7 @@
 #endif
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace time_internal {
 namespace cctz {
 
@@ -53,8 +56,8 @@ using second_t = std::int_fast8_t;  // [0:59]
 
 // Normalized civil-time fields: Y-M-D HH:MM:SS.
 struct fields {
-  CONSTEXPR_M fields(year_t year, month_t month, day_t day,
+  CONSTEXPR_M fields(year_t year, month_t month, day_t day, hour_t hour,
-                     hour_t hour, minute_t minute, second_t second)
+                     minute_t minute, second_t second)
       : y(year), m(month), d(day), hh(hour), mm(minute), ss(second) {}
   std::int_least64_t y;
   std::int_least8_t m;
@@ -101,8 +104,8 @@ CONSTEXPR_F int days_per_month(year_t y, month_t m) noexcept {
   return k_days_per_month[m] + (m == 2 && is_leap_year(y));
 }
 
-CONSTEXPR_F fields n_day(year_t y, month_t m, diff_t d, diff_t cd,
+CONSTEXPR_F fields n_day(year_t y, month_t m, diff_t d, diff_t cd, hour_t hh,
-                         hour_t hh, minute_t mm, second_t ss) noexcept {
+                         minute_t mm, second_t ss) noexcept {
   y += (cd / 146097) * 400;
   cd %= 146097;
   if (cd < 0) {
@@ -152,8 +155,8 @@ CONSTEXPR_F fields n_day(year_t y, month_t m, diff_t d, diff_t cd,
   }
   return fields(y, m, static_cast<day_t>(d), hh, mm, ss);
 }
-CONSTEXPR_F fields n_mon(year_t y, diff_t m, diff_t d, diff_t cd,
+CONSTEXPR_F fields n_mon(year_t y, diff_t m, diff_t d, diff_t cd, hour_t hh,
-                         hour_t hh, minute_t mm, second_t ss) noexcept {
+                         minute_t mm, second_t ss) noexcept {
   if (m != 12) {
     y += m / 12;
     m %= 12;
@@ -164,8 +167,8 @@ CONSTEXPR_F fields n_mon(year_t y, diff_t m, diff_t d, diff_t cd,
   }
   return n_day(y, static_cast<month_t>(m), d, cd, hh, mm, ss);
 }
-CONSTEXPR_F fields n_hour(year_t y, diff_t m, diff_t d, diff_t cd,
+CONSTEXPR_F fields n_hour(year_t y, diff_t m, diff_t d, diff_t cd, diff_t hh,
-                          diff_t hh, minute_t mm, second_t ss) noexcept {
+                          minute_t mm, second_t ss) noexcept {
   cd += hh / 24;
   hh %= 24;
   if (hh < 0) {
@@ -264,8 +267,8 @@ CONSTEXPR_F diff_t ymd_ord(year_t y, month_t m, day_t d) noexcept {
 // yet the difference between two such extreme values may actually be
 // small, so we take a little care to avoid overflow when possible by
 // exploiting the 146097-day cycle.
-CONSTEXPR_F diff_t day_difference(year_t y1, month_t m1, day_t d1,
+CONSTEXPR_F diff_t day_difference(year_t y1, month_t m1, day_t d1, year_t y2,
-                                  year_t y2, month_t m2, day_t d2) noexcept {
+                                  month_t m2, day_t d2) noexcept {
   const diff_t a_c4_off = y1 % 400;
   const diff_t b_c4_off = y2 % 400;
   diff_t c4_diff = (y1 - a_c4_off) - (y2 - b_c4_off);
@@ -305,9 +308,7 @@ CONSTEXPR_F diff_t difference(second_tag, fields f1, fields f2) noexcept {
 ////////////////////////////////////////////////////////////////////////
 
 // Aligns the (normalized) fields struct to the indicated field.
-CONSTEXPR_F fields align(second_tag, fields f) noexcept {
+CONSTEXPR_F fields align(second_tag, fields f) noexcept { return f; }
-  return f;
-}
 CONSTEXPR_F fields align(minute_tag, fields f) noexcept {
   return fields{f.y, f.m, f.d, f.hh, f.mm, 0};
 }
@@ -386,11 +387,11 @@ class civil_time {
       : civil_time(ct.f_) {}
 
   // Factories for the maximum/minimum representable civil_time.
-  static CONSTEXPR_F civil_time (max)() {
+  static CONSTEXPR_F civil_time(max)() {
     const auto max_year = (std::numeric_limits<std::int_least64_t>::max)();
     return civil_time(max_year, 12, 31, 23, 59, 59);
   }
-  static CONSTEXPR_F civil_time (min)() {
+  static CONSTEXPR_F civil_time(min)() {
     const auto min_year = (std::numeric_limits<std::int_least64_t>::min)();
     return civil_time(min_year, 1, 1, 0, 0, 0);
   }
@@ -416,17 +417,13 @@ class civil_time {
     }
     return *this;
   }
-  CONSTEXPR_M civil_time& operator++() noexcept {
+  CONSTEXPR_M civil_time& operator++() noexcept { return *this += 1; }
-    return *this += 1;
-  }
   CONSTEXPR_M civil_time operator++(int) noexcept {
     const civil_time a = *this;
     ++*this;
     return a;
   }
-  CONSTEXPR_M civil_time& operator--() noexcept {
+  CONSTEXPR_M civil_time& operator--() noexcept { return *this -= 1; }
-    return *this -= 1;
-  }
   CONSTEXPR_M civil_time operator--(int) noexcept {
     const civil_time a = *this;
     --*this;
@@ -483,17 +480,17 @@ using civil_second = civil_time<second_tag>;
 template <typename T1, typename T2>
 CONSTEXPR_F bool operator<(const civil_time<T1>& lhs,
                            const civil_time<T2>& rhs) noexcept {
-  return (lhs.year() < rhs.year() ||
+  return (
-          (lhs.year() == rhs.year() &&
+      lhs.year() < rhs.year() ||
-           (lhs.month() < rhs.month() ||
+      (lhs.year() == rhs.year() &&
-            (lhs.month() == rhs.month() &&
+       (lhs.month() < rhs.month() ||
-             (lhs.day() < rhs.day() ||
+        (lhs.month() == rhs.month() &&
-              (lhs.day() == rhs.day() &&
+         (lhs.day() < rhs.day() || (lhs.day() == rhs.day() &&
-               (lhs.hour() < rhs.hour() ||
+                                    (lhs.hour() < rhs.hour() ||
-                (lhs.hour() == rhs.hour() &&
+                                     (lhs.hour() == rhs.hour() &&
-                 (lhs.minute() < rhs.minute() ||
+                                      (lhs.minute() < rhs.minute() ||
-                  (lhs.minute() == rhs.minute() &&
+                                       (lhs.minute() == rhs.minute() &&
-                   (lhs.second() < rhs.second())))))))))));
+                                        (lhs.second() < rhs.second())))))))))));
 }
 template <typename T1, typename T2>
 CONSTEXPR_F bool operator<=(const civil_time<T1>& lhs,
@@ -615,6 +612,7 @@ std::ostream& operator<<(std::ostream& os, weekday wd);
 }  // namespace detail
 }  // namespace cctz
 }  // namespace time_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 #undef CONSTEXPR_M

absl/time/internal/cctz/include/cctz/time_zone.h

@@ -25,9 +25,11 @@
 #include <string>
 #include <utility>
 
+#include "absl/base/config.h"
 #include "absl/time/internal/cctz/include/cctz/civil_time.h"
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace time_internal {
 namespace cctz {
 
@@ -39,8 +41,8 @@ using sys_seconds = seconds;  // Deprecated.  Use cctz::seconds instead.
 
 namespace detail {
 template <typename D>
-inline std::pair<time_point<seconds>, D>
+inline std::pair<time_point<seconds>, D> split_seconds(
-split_seconds(const time_point<D>& tp) {
+    const time_point<D>& tp) {
   auto sec = std::chrono::time_point_cast<seconds>(tp);
   auto sub = tp - sec;
   if (sub.count() < 0) {
@@ -49,8 +51,8 @@ split_seconds(const time_point<D>& tp) {
   }
   return {sec, std::chrono::duration_cast<D>(sub)};
 }
-inline std::pair<time_point<seconds>, seconds>
+inline std::pair<time_point<seconds>, seconds> split_seconds(
-split_seconds(const time_point<seconds>& tp) {
+    const time_point<seconds>& tp) {
   return {tp, seconds::zero()};
 }
 }  // namespace detail
@@ -194,15 +196,13 @@ class time_zone {
   bool next_transition(const time_point<seconds>& tp,
                        civil_transition* trans) const;
   template <typename D>
-  bool next_transition(const time_point<D>& tp,
+  bool next_transition(const time_point<D>& tp, civil_transition* trans) const {
-                       civil_transition* trans) const {
     return next_transition(detail::split_seconds(tp).first, trans);
   }
   bool prev_transition(const time_point<seconds>& tp,
                        civil_transition* trans) const;
   template <typename D>
-  bool prev_transition(const time_point<D>& tp,
+  bool prev_transition(const time_point<D>& tp, civil_transition* trans) const {
-                       civil_transition* trans) const {
     return prev_transition(detail::split_seconds(tp).first, trans);
   }
 
@@ -220,9 +220,7 @@ class time_zone {
   friend bool operator==(time_zone lhs, time_zone rhs) {
     return &lhs.effective_impl() == &rhs.effective_impl();
   }
-  friend bool operator!=(time_zone lhs, time_zone rhs) {
+  friend bool operator!=(time_zone lhs, time_zone rhs) { return !(lhs == rhs); }
-    return !(lhs == rhs);
-  }
 
   template <typename H>
   friend H AbslHashValue(H h, time_zone tz) {
@@ -380,6 +378,7 @@ inline bool parse(const std::string& fmt, const std::string& input,
 
 }  // namespace cctz
 }  // namespace time_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 #endif  // ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_H_

absl/time/internal/cctz/include/cctz/zone_info_source.h

@@ -20,7 +20,10 @@
 #include <memory>
 #include <string>
 
+#include "absl/base/config.h"
+
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace time_internal {
 namespace cctz {
 
@@ -30,7 +33,7 @@ class ZoneInfoSource {
   virtual ~ZoneInfoSource();
 
   virtual std::size_t Read(void* ptr, std::size_t size) = 0;  // like fread()
-  virtual int Skip(std::size_t offset) = 0;  // like fseek()
+  virtual int Skip(std::size_t offset) = 0;                   // like fseek()
 
   // Until the zoneinfo data supports versioning information, we provide
   // a way for a ZoneInfoSource to indicate it out-of-band.  The default
@@ -40,9 +43,11 @@ class ZoneInfoSource {
 
 }  // namespace cctz
 }  // namespace time_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace time_internal {
 namespace cctz_extension {
 
@@ -52,8 +57,8 @@ namespace cctz_extension {
 using ZoneInfoSourceFactory =
     std::unique_ptr<absl::time_internal::cctz::ZoneInfoSource> (*)(
         const std::string&,
-        const std::function<std::unique_ptr<absl::time_internal::cctz::ZoneInfoSource>(
+        const std::function<std::unique_ptr<
-            const std::string&)>&);
+            absl::time_internal::cctz::ZoneInfoSource>(const std::string&)>&);
 
 // The user can control the mapping of zone names to zoneinfo data by
 // providing a definition for cctz_extension::zone_info_source_factory.
@@ -91,6 +96,7 @@ extern ZoneInfoSourceFactory zone_info_source_factory;
 
 }  // namespace cctz_extension
 }  // namespace time_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 #endif  // ABSL_TIME_INTERNAL_CCTZ_ZONE_INFO_SOURCE_H_

absl/time/internal/cctz/src/civil_time_detail.cc

@@ -18,7 +18,10 @@
 #include <ostream>
 #include <sstream>
 
+#include "absl/base/config.h"
+
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace time_internal {
 namespace cctz {
 namespace detail {
@@ -87,4 +90,5 @@ std::ostream& operator<<(std::ostream& os, weekday wd) {
 }  // namespace detail
 }  // namespace cctz
 }  // namespace time_internal
+ABSL_NAMESPACE_END
 }  // namespace absl

absl/time/internal/cctz/src/civil_time_test.cc

@@ -21,8 +21,10 @@
 #include <type_traits>
 
 #include "gtest/gtest.h"
+#include "absl/base/config.h"
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace time_internal {
 namespace cctz {
 
@@ -1014,19 +1016,13 @@ TEST(CivilTime, LeapYears) {
       int day;
     } leap_day;  // The date of the day after Feb 28.
   } kLeapYearTable[]{
-      {1900, 365, {3, 1}},
+      {1900, 365, {3, 1}},  {1999, 365, {3, 1}},
-      {1999, 365, {3, 1}},
       {2000, 366, {2, 29}},  // leap year
-      {2001, 365, {3, 1}},
+      {2001, 365, {3, 1}},  {2002, 365, {3, 1}},
-      {2002, 365, {3, 1}},
+      {2003, 365, {3, 1}},  {2004, 366, {2, 29}},  // leap year
-      {2003, 365, {3, 1}},
+      {2005, 365, {3, 1}},  {2006, 365, {3, 1}},
-      {2004, 366, {2, 29}},  // leap year
+      {2007, 365, {3, 1}},  {2008, 366, {2, 29}},  // leap year
-      {2005, 365, {3, 1}},
+      {2009, 365, {3, 1}},  {2100, 365, {3, 1}},
-      {2006, 365, {3, 1}},
-      {2007, 365, {3, 1}},
-      {2008, 366, {2, 29}},  // leap year
-      {2009, 365, {3, 1}},
-      {2100, 365, {3, 1}},
   };
 
   for (const auto& e : kLeapYearTable) {
@@ -1056,4 +1052,5 @@ TEST(CivilTime, FirstThursdayInMonth) {
 
 }  // namespace cctz
 }  // namespace time_internal
+ABSL_NAMESPACE_END
 }  // namespace absl

absl/time/internal/cctz/src/time_zone_fixed.cc

@@ -20,7 +20,10 @@
 #include <cstring>
 #include <string>
 
+#include "absl/base/config.h"
+
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace time_internal {
 namespace cctz {
 
@@ -59,11 +62,9 @@ bool FixedOffsetFromName(const std::string& name, seconds* offset) {
   const char* const ep = kFixedZonePrefix + prefix_len;
   if (name.size() != prefix_len + 9)  // <prefix>+99:99:99
     return false;
-  if (!std::equal(kFixedZonePrefix, ep, name.begin()))
+  if (!std::equal(kFixedZonePrefix, ep, name.begin())) return false;
-    return false;
   const char* np = name.data() + prefix_len;
-  if (np[0] != '+' && np[0] != '-')
+  if (np[0] != '+' && np[0] != '-') return false;
-    return false;
   if (np[3] != ':' || np[6] != ':')  // see note below about large offsets
     return false;
 
@@ -135,4 +136,5 @@ std::string FixedOffsetToAbbr(const seconds& offset) {
 
 }  // namespace cctz
 }  // namespace time_internal
+ABSL_NAMESPACE_END
 }  // namespace absl

absl/time/internal/cctz/src/time_zone_fixed.h

@@ -17,9 +17,11 @@
 
 #include <string>
 
+#include "absl/base/config.h"
 #include "absl/time/internal/cctz/include/cctz/time_zone.h"
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace time_internal {
 namespace cctz {
 
@@ -44,6 +46,7 @@ std::string FixedOffsetToAbbr(const seconds& offset);
 
 }  // namespace cctz
 }  // namespace time_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 #endif  // ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_FIXED_H_

absl/time/internal/cctz/src/time_zone_format.cc

@@ -13,17 +13,18 @@
 //   limitations under the License.
 
 #if !defined(HAS_STRPTIME)
-# if !defined(_MSC_VER) && !defined(__MINGW32__)
+#if !defined(_MSC_VER) && !defined(__MINGW32__)
-#  define HAS_STRPTIME 1  // assume everyone has strptime() except windows
+#define HAS_STRPTIME 1  // assume everyone has strptime() except windows
-# endif
+#endif
 #endif
 
 #if defined(HAS_STRPTIME) && HAS_STRPTIME
-# if !defined(_XOPEN_SOURCE)
+#if !defined(_XOPEN_SOURCE)
-#  define _XOPEN_SOURCE  // Definedness suffices for strptime.
+#define _XOPEN_SOURCE  // Definedness suffices for strptime.
-# endif
+#endif
 #endif
 
+#include "absl/base/config.h"
 #include "absl/time/internal/cctz/include/cctz/time_zone.h"
 
 // Include time.h directly since, by C++ standards, ctime doesn't have to
@@ -48,6 +49,7 @@
 #include "time_zone_if.h"
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace time_internal {
 namespace cctz {
 namespace detail {
@@ -502,8 +504,9 @@ std::string format(const std::string& format, const time_point<seconds>& tp,
           bp = ep;
           if (n > 0) {
             if (n > kDigits10_64) n = kDigits10_64;
-            bp = Format64(bp, n, (n > 15) ? fs.count() * kExp10[n - 15]
+            bp = Format64(bp, n,
-                                          : fs.count() / kExp10[15 - n]);
+                          (n > 15) ? fs.count() * kExp10[n - 15]
+                                   : fs.count() / kExp10[15 - n]);
             if (*np == 'S') *--bp = '.';
           }
           if (*np == 'S') bp = Format02d(bp, al.cs.second());
@@ -720,10 +723,9 @@ bool parse(const std::string& format, const std::string& input,
         data = ParseZone(data, &zone);
         continue;
       case 's':
-        data = ParseInt(data, 0,
+        data =
-                        std::numeric_limits<std::int_fast64_t>::min(),
+            ParseInt(data, 0, std::numeric_limits<std::int_fast64_t>::min(),
-                        std::numeric_limits<std::int_fast64_t>::max(),
+                     std::numeric_limits<std::int_fast64_t>::max(), &percent_s);
-                        &percent_s);
         if (data != nullptr) saw_percent_s = true;
         continue;
       case ':':
@@ -916,4 +918,5 @@ bool parse(const std::string& format, const std::string& input,
 }  // namespace detail
 }  // namespace cctz
 }  // namespace time_internal
+ABSL_NAMESPACE_END
 }  // namespace absl

absl/time/internal/cctz/src/time_zone_format_test.cc

@@ -12,20 +12,21 @@
 //   See the License for the specific language governing permissions and
 //   limitations under the License.
 
-#include "absl/time/internal/cctz/include/cctz/time_zone.h"
-
 #include <chrono>
 #include <iomanip>
 #include <sstream>
 #include <string>
 
-#include "absl/time/internal/cctz/include/cctz/civil_time.h"
 #include "gmock/gmock.h"
 #include "gtest/gtest.h"
+#include "absl/base/config.h"
+#include "absl/time/internal/cctz/include/cctz/civil_time.h"
+#include "absl/time/internal/cctz/include/cctz/time_zone.h"
 
 namespace chrono = std::chrono;
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace time_internal {
 namespace cctz {
 
@@ -48,10 +49,10 @@ namespace {
   } while (0)
 
 const char RFC3339_full[] = "%Y-%m-%dT%H:%M:%E*S%Ez";
-const char RFC3339_sec[] =  "%Y-%m-%dT%H:%M:%S%Ez";
+const char RFC3339_sec[] = "%Y-%m-%dT%H:%M:%S%Ez";
 
 const char RFC1123_full[] = "%a, %d %b %Y %H:%M:%S %z";
-const char RFC1123_no_wday[] =  "%d %b %Y %H:%M:%S %z";
+const char RFC1123_no_wday[] = "%d %b %Y %H:%M:%S %z";
 
 // A helper that tests the given format specifier by itself, and with leading
 // and trailing characters.  For example: TestFormatSpecifier(tp, "%a", "Thu").
@@ -88,8 +89,11 @@ TEST(Format, TimePointResolution) {
       format(kFmt, chrono::time_point_cast<chrono::milliseconds>(t0), utc));
   EXPECT_EQ("03:04:05",
             format(kFmt, chrono::time_point_cast<chrono::seconds>(t0), utc));
-  EXPECT_EQ("03:04:05",
+  EXPECT_EQ(
-            format(kFmt, chrono::time_point_cast<absl::time_internal::cctz::seconds>(t0), utc));
+      "03:04:05",
+      format(kFmt,
+             chrono::time_point_cast<absl::time_internal::cctz::seconds>(t0),
+             utc));
   EXPECT_EQ("03:04:00",
             format(kFmt, chrono::time_point_cast<chrono::minutes>(t0), utc));
   EXPECT_EQ("03:00:00",
@@ -110,12 +114,10 @@ TEST(Format, TimePointExtendedResolution) {
   EXPECT_EQ(
       "12:34:56.012345678901234",
       detail::format(kFmt, tp, detail::femtoseconds(12345678901234), utc));
-  EXPECT_EQ(
+  EXPECT_EQ("12:34:56.001234567890123",
-      "12:34:56.001234567890123",
+            detail::format(kFmt, tp, detail::femtoseconds(1234567890123), utc));
-      detail::format(kFmt, tp, detail::femtoseconds(1234567890123), utc));
+  EXPECT_EQ("12:34:56.000123456789012",
-  EXPECT_EQ(
+            detail::format(kFmt, tp, detail::femtoseconds(123456789012), utc));
-      "12:34:56.000123456789012",
-      detail::format(kFmt, tp, detail::femtoseconds(123456789012), utc));
 
   EXPECT_EQ("12:34:56.000000000000123",
             detail::format(kFmt, tp, detail::femtoseconds(123), utc));
@@ -1416,8 +1418,8 @@ TEST(Parse, MaxRange) {
       parse(RFC3339_sec, "-292277022657-01-27T08:29:51+01:00", utc, &tp));
 
   // tests max/min civil-second overflow
-  EXPECT_FALSE(parse(RFC3339_sec, "9223372036854775807-12-31T23:59:59-00:01",
+  EXPECT_FALSE(
-                     utc, &tp));
+      parse(RFC3339_sec, "9223372036854775807-12-31T23:59:59-00:01", utc, &tp));
   EXPECT_FALSE(parse(RFC3339_sec, "-9223372036854775808-01-01T00:00:00+00:01",
                      utc, &tp));
 
@@ -1474,7 +1476,8 @@ TEST(FormatParse, RoundTrip) {
 
 TEST(FormatParse, RoundTripDistantFuture) {
   const time_zone utc = utc_time_zone();
-  const time_point<absl::time_internal::cctz::seconds> in = time_point<absl::time_internal::cctz::seconds>::max();
+  const time_point<absl::time_internal::cctz::seconds> in =
+      time_point<absl::time_internal::cctz::seconds>::max();
   const std::string s = format(RFC3339_full, in, utc);
   time_point<absl::time_internal::cctz::seconds> out;
   EXPECT_TRUE(parse(RFC3339_full, s, utc, &out)) << s;
@@ -1483,7 +1486,8 @@ TEST(FormatParse, RoundTripDistantFuture) {
 
 TEST(FormatParse, RoundTripDistantPast) {
   const time_zone utc = utc_time_zone();
-  const time_point<absl::time_internal::cctz::seconds> in = time_point<absl::time_internal::cctz::seconds>::min();
+  const time_point<absl::time_internal::cctz::seconds> in =
+      time_point<absl::time_internal::cctz::seconds>::min();
   const std::string s = format(RFC3339_full, in, utc);
   time_point<absl::time_internal::cctz::seconds> out;
   EXPECT_TRUE(parse(RFC3339_full, s, utc, &out)) << s;
@@ -1492,4 +1496,5 @@ TEST(FormatParse, RoundTripDistantPast) {
 
 }  // namespace cctz
 }  // namespace time_internal
+ABSL_NAMESPACE_END
 }  // namespace absl

absl/time/internal/cctz/src/time_zone_if.cc

@@ -13,10 +13,13 @@
 //   limitations under the License.
 
 #include "time_zone_if.h"
+
+#include "absl/base/config.h"
 #include "time_zone_info.h"
 #include "time_zone_libc.h"
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace time_internal {
 namespace cctz {
 
@@ -38,4 +41,5 @@ TimeZoneIf::~TimeZoneIf() {}
 
 }  // namespace cctz
 }  // namespace time_internal
+ABSL_NAMESPACE_END
 }  // namespace absl

absl/time/internal/cctz/src/time_zone_if.h

@@ -20,10 +20,12 @@
 #include <memory>
 #include <string>
 
+#include "absl/base/config.h"
 #include "absl/time/internal/cctz/include/cctz/civil_time.h"
 #include "absl/time/internal/cctz/include/cctz/time_zone.h"
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace time_internal {
 namespace cctz {
 
@@ -38,8 +40,7 @@ class TimeZoneIf {
 
   virtual time_zone::absolute_lookup BreakTime(
       const time_point<seconds>& tp) const = 0;
-  virtual time_zone::civil_lookup MakeTime(
+  virtual time_zone::civil_lookup MakeTime(const civil_second& cs) const = 0;
-      const civil_second& cs) const = 0;
 
   virtual bool NextTransition(const time_point<seconds>& tp,
                               time_zone::civil_transition* trans) const = 0;
@@ -58,15 +59,18 @@ class TimeZoneIf {
 // Unix clock are second aligned, but not that they share an epoch.
 inline std::int_fast64_t ToUnixSeconds(const time_point<seconds>& tp) {
   return (tp - std::chrono::time_point_cast<seconds>(
-                   std::chrono::system_clock::from_time_t(0))).count();
+                   std::chrono::system_clock::from_time_t(0)))
+      .count();
 }
 inline time_point<seconds> FromUnixSeconds(std::int_fast64_t t) {
   return std::chrono::time_point_cast<seconds>(
-             std::chrono::system_clock::from_time_t(0)) + seconds(t);
+             std::chrono::system_clock::from_time_t(0)) +
+         seconds(t);
 }
 
 }  // namespace cctz
 }  // namespace time_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 #endif  // ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_IF_H_

absl/time/internal/cctz/src/time_zone_impl.cc

@@ -20,9 +20,11 @@
 #include <unordered_map>
 #include <utility>
 
+#include "absl/base/config.h"
 #include "time_zone_fixed.h"
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace time_internal {
 namespace cctz {
 
@@ -43,9 +45,7 @@ std::mutex& TimeZoneMutex() {
 
 }  // namespace
 
-time_zone time_zone::Impl::UTC() {
+time_zone time_zone::Impl::UTC() { return time_zone(UTCImpl()); }
-  return time_zone(UTCImpl());
-}
 
 bool time_zone::Impl::LoadTimeZone(const std::string& name, time_zone* tz) {
   const time_zone::Impl* const utc_impl = UTCImpl();
@@ -117,4 +117,5 @@ const time_zone::Impl* time_zone::Impl::UTCImpl() {
 
 }  // namespace cctz
 }  // namespace time_internal
+ABSL_NAMESPACE_END
 }  // namespace absl

absl/time/internal/cctz/src/time_zone_impl.h

@@ -18,12 +18,14 @@
 #include <memory>
 #include <string>
 
+#include "absl/base/config.h"
 #include "absl/time/internal/cctz/include/cctz/civil_time.h"
 #include "absl/time/internal/cctz/include/cctz/time_zone.h"
 #include "time_zone_if.h"
 #include "time_zone_info.h"
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace time_internal {
 namespace cctz {
 
@@ -85,6 +87,7 @@ class time_zone::Impl {
 
 }  // namespace cctz
 }  // namespace time_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 #endif  // ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_IMPL_H_

absl/time/internal/cctz/src/time_zone_info.cc

@@ -45,11 +45,13 @@
 #include <sstream>
 #include <string>
 
+#include "absl/base/config.h"
 #include "absl/time/internal/cctz/include/cctz/civil_time.h"
 #include "time_zone_fixed.h"
 #include "time_zone_posix.h"
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace time_internal {
 namespace cctz {
 
@@ -65,8 +67,8 @@ const std::int_least32_t kDaysPerYear[2] = {365, 366};
 // The day offsets of the beginning of each (1-based) month in non-leap and
 // leap years respectively (e.g., 335 days before December in a leap year).
 const std::int_least16_t kMonthOffsets[2][1 + 12 + 1] = {
-  {-1, 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365},
+    {-1, 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365},
-  {-1, 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366},
+    {-1, 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366},
 };
 
 // We reject leap-second encoded zoneinfo and so assume 60-second minutes.
@@ -77,8 +79,8 @@ const std::int_least64_t kSecsPer400Years = 146097LL * kSecsPerDay;
 
 // Like kDaysPerYear[] but scaled up by a factor of kSecsPerDay.
 const std::int_least32_t kSecsPerYear[2] = {
-  365 * kSecsPerDay,
+    365 * kSecsPerDay,
-  366 * kSecsPerDay,
+    366 * kSecsPerDay,
 };
 
 // Single-byte, unsigned numeric values are encoded directly.
@@ -172,8 +174,8 @@ inline time_zone::civil_lookup MakeRepeated(const Transition& tr,
 }
 
 inline civil_second YearShift(const civil_second& cs, year_t shift) {
-  return civil_second(cs.year() + shift, cs.month(), cs.day(),
+  return civil_second(cs.year() + shift, cs.month(), cs.day(), cs.hour(),
-                      cs.hour(), cs.minute(), cs.second());
+                      cs.minute(), cs.second());
 }
 
 }  // namespace
@@ -216,7 +218,7 @@ bool TimeZoneInfo::ResetToBuiltinUTC(const seconds& offset) {
   default_transition_type_ = 0;
   abbreviations_ = FixedOffsetToAbbr(offset);
   abbreviations_.append(1, '\0');  // add NUL
-  future_spec_.clear();  // never needed for a fixed-offset zone
+  future_spec_.clear();            // never needed for a fixed-offset zone
   extended_ = false;
 
   tt.civil_max = LocalTime(seconds::max().count(), tt).cs;
@@ -393,31 +395,24 @@ void TimeZoneInfo::ExtendTransitions(const std::string& name,
 bool TimeZoneInfo::Load(const std::string& name, ZoneInfoSource* zip) {
   // Read and validate the header.
   tzhead tzh;
-  if (zip->Read(&tzh, sizeof(tzh)) != sizeof(tzh))
+  if (zip->Read(&tzh, sizeof(tzh)) != sizeof(tzh)) return false;
-    return false;
   if (strncmp(tzh.tzh_magic, TZ_MAGIC, sizeof(tzh.tzh_magic)) != 0)
     return false;
   Header hdr;
-  if (!hdr.Build(tzh))
+  if (!hdr.Build(tzh)) return false;
-    return false;
   std::size_t time_len = 4;
   if (tzh.tzh_version[0] != '\0') {
     // Skip the 4-byte data.
-    if (zip->Skip(hdr.DataLength(time_len)) != 0)
+    if (zip->Skip(hdr.DataLength(time_len)) != 0) return false;
-      return false;
     // Read and validate the header for the 8-byte data.
-    if (zip->Read(&tzh, sizeof(tzh)) != sizeof(tzh))
+    if (zip->Read(&tzh, sizeof(tzh)) != sizeof(tzh)) return false;
-      return false;
     if (strncmp(tzh.tzh_magic, TZ_MAGIC, sizeof(tzh.tzh_magic)) != 0)
       return false;
-    if (tzh.tzh_version[0] == '\0')
+    if (tzh.tzh_version[0] == '\0') return false;
-      return false;
+    if (!hdr.Build(tzh)) return false;
-    if (!hdr.Build(tzh))
-      return false;
     time_len = 8;
   }
-  if (hdr.typecnt == 0)
+  if (hdr.typecnt == 0) return false;
-    return false;
   if (hdr.leapcnt != 0) {
     // This code assumes 60-second minutes so we do not want
     // the leap-second encoded zoneinfo. We could reverse the
@@ -425,16 +420,13 @@ bool TimeZoneInfo::Load(const std::string& name, ZoneInfoSource* zip) {
     // so currently we simply reject such data.
     return false;
   }
-  if (hdr.ttisstdcnt != 0 && hdr.ttisstdcnt != hdr.typecnt)
+  if (hdr.ttisstdcnt != 0 && hdr.ttisstdcnt != hdr.typecnt) return false;
-    return false;
+  if (hdr.ttisutcnt != 0 && hdr.ttisutcnt != hdr.typecnt) return false;
-  if (hdr.ttisutcnt != 0 && hdr.ttisutcnt != hdr.typecnt)
-    return false;
 
   // Read the data into a local buffer.
   std::size_t len = hdr.DataLength(time_len);
   std::vector<char> tbuf(len);
-  if (zip->Read(tbuf.data(), len) != len)
+  if (zip->Read(tbuf.data(), len) != len) return false;
-    return false;
   const char* bp = tbuf.data();
 
   // Decode and validate the transitions.
@@ -452,10 +444,8 @@ bool TimeZoneInfo::Load(const std::string& name, ZoneInfoSource* zip) {
   bool seen_type_0 = false;
   for (std::size_t i = 0; i != hdr.timecnt; ++i) {
     transitions_[i].type_index = Decode8(bp++);
-    if (transitions_[i].type_index >= hdr.typecnt)
+    if (transitions_[i].type_index >= hdr.typecnt) return false;
-      return false;
+    if (transitions_[i].type_index == 0) seen_type_0 = true;
-    if (transitions_[i].type_index == 0)
-      seen_type_0 = true;
   }
 
   // Decode and validate the transition types.
@@ -469,8 +459,7 @@ bool TimeZoneInfo::Load(const std::string& name, ZoneInfoSource* zip) {
     bp += 4;
     transition_types_[i].is_dst = (Decode8(bp++) != 0);
     transition_types_[i].abbr_index = Decode8(bp++);
-    if (transition_types_[i].abbr_index >= hdr.charcnt)
+    if (transition_types_[i].abbr_index >= hdr.charcnt) return false;
-      return false;
   }
 
   // Determine the before-first-transition type.
@@ -479,13 +468,10 @@ bool TimeZoneInfo::Load(const std::string& name, ZoneInfoSource* zip) {
     std::uint_fast8_t index = 0;
     if (transition_types_[0].is_dst) {
       index = transitions_[0].type_index;
-      while (index != 0 && transition_types_[index].is_dst)
+      while (index != 0 && transition_types_[index].is_dst) --index;
-        --index;
     }
-    while (index != hdr.typecnt && transition_types_[index].is_dst)
+    while (index != hdr.typecnt && transition_types_[index].is_dst) ++index;
-      ++index;
+    if (index != hdr.typecnt) default_transition_type_ = index;
-    if (index != hdr.typecnt)
-      default_transition_type_ = index;
   }
 
   // Copy all the abbreviations.
@@ -509,11 +495,9 @@ bool TimeZoneInfo::Load(const std::string& name, ZoneInfoSource* zip) {
       unsigned char ch;  // all non-EOF results are positive
       return (azip->Read(&ch, 1) == 1) ? ch : EOF;
     };
-    if (get_char(zip) != '\n')
+    if (get_char(zip) != '\n') return false;
-      return false;
     for (int c = get_char(zip); c != '\n'; c = get_char(zip)) {
-      if (c == EOF)
+      if (c == EOF) return false;
-        return false;
       future_spec_.push_back(static_cast<char>(c));
     }
   }
@@ -624,7 +608,7 @@ class FileZoneInfoSource : public ZoneInfoSource {
       : fp_(fp, fclose), len_(len) {}
 
  private:
-  std::unique_ptr<FILE, int(*)(FILE*)> fp_;
+  std::unique_ptr<FILE, int (*)(FILE*)> fp_;
   std::size_t len_;
 };
 
@@ -748,13 +732,13 @@ time_zone::absolute_lookup TimeZoneInfo::LocalTime(
   // A civil time in "+offset" looks like (time+offset) in UTC.
   // Note: We perform two additions in the civil_second domain to
   // sidestep the chance of overflow in (unix_time + tt.utc_offset).
-  return {(civil_second() + unix_time) + tt.utc_offset,
+  return {(civil_second() + unix_time) + tt.utc_offset, tt.utc_offset,
-          tt.utc_offset, tt.is_dst, &abbreviations_[tt.abbr_index]};
+          tt.is_dst, &abbreviations_[tt.abbr_index]};
 }
 
 // BreakTime() translation for a particular transition.
-time_zone::absolute_lookup TimeZoneInfo::LocalTime(
+time_zone::absolute_lookup TimeZoneInfo::LocalTime(std::int_fast64_t unix_time,
-    std::int_fast64_t unix_time, const Transition& tr) const {
+                                                   const Transition& tr) const {
   const TransitionType& tt = transition_types_[tr.type_index];
   // Note: (unix_time - tr.unix_time) will never overflow as we
   // have ensured that there is always a "nearby" transition.
@@ -897,9 +881,7 @@ time_zone::civil_lookup TimeZoneInfo::MakeTime(const civil_second& cs) const {
   return MakeUnique(tr->unix_time + (cs - tr->civil_sec));
 }
 
-std::string TimeZoneInfo::Version() const {
+std::string TimeZoneInfo::Version() const { return version_; }
-  return version_;
-}
 
 std::string TimeZoneInfo::Description() const {
   std::ostringstream oss;
@@ -921,8 +903,8 @@ bool TimeZoneInfo::NextTransition(const time_point<seconds>& tp,
   }
   std::int_fast64_t unix_time = ToUnixSeconds(tp);
   const Transition target = {unix_time, 0, civil_second(), civil_second()};
-  const Transition* tr = std::upper_bound(begin, end, target,
+  const Transition* tr =
-                                          Transition::ByUnixTime());
+      std::upper_bound(begin, end, target, Transition::ByUnixTime());
   for (; tr != end; ++tr) {  // skip no-op transitions
     std::uint_fast8_t prev_type_index =
         (tr == begin) ? default_transition_type_ : tr[-1].type_index;
@@ -956,8 +938,8 @@ bool TimeZoneInfo::PrevTransition(const time_point<seconds>& tp,
     unix_time += 1;  // ceils
   }
   const Transition target = {unix_time, 0, civil_second(), civil_second()};
-  const Transition* tr = std::lower_bound(begin, end, target,
+  const Transition* tr =
-                                          Transition::ByUnixTime());
+      std::lower_bound(begin, end, target, Transition::ByUnixTime());
   for (; tr != begin; --tr) {  // skip no-op transitions
     std::uint_fast8_t prev_type_index =
         (tr - 1 == begin) ? default_transition_type_ : tr[-2].type_index;
@@ -972,4 +954,5 @@ bool TimeZoneInfo::PrevTransition(const time_point<seconds>& tp,
 
 }  // namespace cctz
 }  // namespace time_internal
+ABSL_NAMESPACE_END
 }  // namespace absl

absl/time/internal/cctz/src/time_zone_info.h

@@ -21,6 +21,7 @@
 #include <string>
 #include <vector>
 
+#include "absl/base/config.h"
 #include "absl/time/internal/cctz/include/cctz/civil_time.h"
 #include "absl/time/internal/cctz/include/cctz/time_zone.h"
 #include "absl/time/internal/cctz/include/cctz/zone_info_source.h"
@@ -28,6 +29,7 @@
 #include "tzfile.h"
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace time_internal {
 namespace cctz {
 
@@ -72,8 +74,7 @@ class TimeZoneInfo : public TimeZoneIf {
   // TimeZoneIf implementations.
   time_zone::absolute_lookup BreakTime(
       const time_point<seconds>& tp) const override;
-  time_zone::civil_lookup MakeTime(
+  time_zone::civil_lookup MakeTime(const civil_second& cs) const override;
-      const civil_second& cs) const override;
   bool NextTransition(const time_point<seconds>& tp,
                       time_zone::civil_transition* trans) const override;
   bool PrevTransition(const time_point<seconds>& tp,
@@ -82,7 +83,7 @@ class TimeZoneInfo : public TimeZoneIf {
   std::string Description() const override;
 
  private:
-  struct Header {  // counts of:
+  struct Header {            // counts of:
     std::size_t timecnt;     // transition times
     std::size_t typecnt;     // transition types
     std::size_t charcnt;     // zone abbreviation characters
@@ -114,7 +115,7 @@ class TimeZoneInfo : public TimeZoneIf {
 
   std::vector<Transition> transitions_;  // ordered by unix_time and civil_sec
   std::vector<TransitionType> transition_types_;  // distinct transition types
-  std::uint_fast8_t default_transition_type_;  // for before first transition
+  std::uint_fast8_t default_transition_type_;     // for before first transition
   std::string abbreviations_;  // all the NUL-terminated abbreviations
 
   std::string version_;      // the tzdata version if available
@@ -131,6 +132,7 @@ class TimeZoneInfo : public TimeZoneIf {
 
 }  // namespace cctz
 }  // namespace time_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 #endif  // ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_INFO_H_

absl/time/internal/cctz/src/time_zone_libc.cc

@@ -23,10 +23,12 @@
 #include <limits>
 #include <utility>
 
+#include "absl/base/config.h"
 #include "absl/time/internal/cctz/include/cctz/civil_time.h"
 #include "absl/time/internal/cctz/include/cctz/time_zone.h"
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace time_internal {
 namespace cctz {
 
@@ -84,9 +86,7 @@ auto tm_gmtoff(const T& tm) -> decltype(tm.__tm_gmtoff) {
 }
 #endif  // tm_gmtoff
 #if defined(tm_zone)
-auto tm_zone(const std::tm& tm) -> decltype(tm.tm_zone) {
+auto tm_zone(const std::tm& tm) -> decltype(tm.tm_zone) { return tm.tm_zone; }
-  return tm.tm_zone;
-}
 #elif defined(__tm_zone)
 auto tm_zone(const std::tm& tm) -> decltype(tm.__tm_zone) {
   return tm.__tm_zone;
@@ -103,19 +103,19 @@ auto tm_zone(const T& tm) -> decltype(tm.__tm_zone) {
 #endif  // tm_zone
 #endif
 
-inline std::tm* gm_time(const std::time_t *timep, std::tm *result) {
+inline std::tm* gm_time(const std::time_t* timep, std::tm* result) {
 #if defined(_WIN32) || defined(_WIN64)
-    return gmtime_s(result, timep) ? nullptr : result;
+  return gmtime_s(result, timep) ? nullptr : result;
 #else
-    return gmtime_r(timep, result);
+  return gmtime_r(timep, result);
 #endif
 }
 
-inline std::tm* local_time(const std::time_t *timep, std::tm *result) {
+inline std::tm* local_time(const std::time_t* timep, std::tm* result) {
 #if defined(_WIN32) || defined(_WIN64)
-    return localtime_s(result, timep) ? nullptr : result;
+  return localtime_s(result, timep) ? nullptr : result;
 #else
-    return localtime_r(timep, result);
+  return localtime_r(timep, result);
 #endif
 }
 
@@ -208,8 +208,8 @@ time_zone::absolute_lookup TimeZoneLibC::BreakTime(
   }
 
   const year_t year = tmp->tm_year + year_t{1900};
-  al.cs = civil_second(year, tmp->tm_mon + 1, tmp->tm_mday,
+  al.cs = civil_second(year, tmp->tm_mon + 1, tmp->tm_mday, tmp->tm_hour,
-                       tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
+                       tmp->tm_min, tmp->tm_sec);
   al.offset = static_cast<int>(tm_gmtoff(*tmp));
   al.abbr = local_ ? tm_zone(*tmp) : "UTC";  // as expected by cctz
   al.is_dst = tmp->tm_isdst > 0;
@@ -304,4 +304,5 @@ std::string TimeZoneLibC::Description() const {
 
 }  // namespace cctz
 }  // namespace time_internal
+ABSL_NAMESPACE_END
 }  // namespace absl

absl/time/internal/cctz/src/time_zone_libc.h

@@ -17,9 +17,11 @@
 
 #include <string>
 
+#include "absl/base/config.h"
 #include "time_zone_if.h"
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace time_internal {
 namespace cctz {
 
@@ -33,8 +35,7 @@ class TimeZoneLibC : public TimeZoneIf {
   // TimeZoneIf implementations.
   time_zone::absolute_lookup BreakTime(
       const time_point<seconds>& tp) const override;
-  time_zone::civil_lookup MakeTime(
+  time_zone::civil_lookup MakeTime(const civil_second& cs) const override;
-      const civil_second& cs) const override;
   bool NextTransition(const time_point<seconds>& tp,
                       time_zone::civil_transition* trans) const override;
   bool PrevTransition(const time_point<seconds>& tp,
@@ -48,6 +49,7 @@ class TimeZoneLibC : public TimeZoneIf {
 
 }  // namespace cctz
 }  // namespace time_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 #endif  // ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_LIBC_H_

absl/time/internal/cctz/src/time_zone_lookup.cc

@@ -12,6 +12,7 @@
 //   See the License for the specific language governing permissions and
 //   limitations under the License.
 
+#include "absl/base/config.h"
 #include "absl/time/internal/cctz/include/cctz/time_zone.h"
 
 #if defined(__ANDROID__)
@@ -23,6 +24,7 @@
 
 #if defined(__APPLE__)
 #include <CoreFoundation/CFTimeZone.h>
+
 #include <vector>
 #endif
 
@@ -34,6 +36,7 @@
 #include "time_zone_impl.h"
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace time_internal {
 namespace cctz {
 
@@ -66,9 +69,7 @@ int __system_property_get(const char* name, char* value) {
 }  // namespace
 #endif
 
-std::string time_zone::name() const {
+std::string time_zone::name() const { return effective_impl().Name(); }
-  return effective_impl().Name();
-}
 
 time_zone::absolute_lookup time_zone::lookup(
     const time_point<seconds>& tp) const {
@@ -89,9 +90,7 @@ bool time_zone::prev_transition(const time_point<seconds>& tp,
   return effective_impl().PrevTransition(tp, trans);
 }
 
-std::string time_zone::version() const {
+std::string time_zone::version() const { return effective_impl().Version(); }
-  return effective_impl().Version();
-}
 
 std::string time_zone::description() const {
   return effective_impl().Description();
@@ -184,4 +183,5 @@ time_zone local_time_zone() {
 
 }  // namespace cctz
 }  // namespace time_internal
+ABSL_NAMESPACE_END
 }  // namespace absl

absl/time/internal/cctz/src/time_zone_posix.cc

@@ -19,7 +19,10 @@
 #include <limits>
 #include <string>
 
+#include "absl/base/config.h"
+
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace time_internal {
 namespace cctz {
 
@@ -152,4 +155,5 @@ bool ParsePosixSpec(const std::string& spec, PosixTimeZone* res) {
 
 }  // namespace cctz
 }  // namespace time_internal
+ABSL_NAMESPACE_END
 }  // namespace absl

absl/time/internal/cctz/src/time_zone_posix.h

@@ -55,7 +55,10 @@
 #include <cstdint>
 #include <string>
 
+#include "absl/base/config.h"
+
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace time_internal {
 namespace cctz {
 
@@ -123,6 +126,7 @@ bool ParsePosixSpec(const std::string& spec, PosixTimeZone* res);
 
 }  // namespace cctz
 }  // namespace time_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 #endif  // ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_POSIX_H_

absl/time/internal/cctz/src/tzfile.h

@@ -22,36 +22,35 @@
 */
 
 #ifndef TZDIR
-#define TZDIR	"/usr/share/zoneinfo" /* Time zone object file directory */
+#define TZDIR "/usr/share/zoneinfo" /* Time zone object file directory */
-#endif /* !defined TZDIR */
+#endif                              /* !defined TZDIR */
 
 #ifndef TZDEFAULT
-#define TZDEFAULT	"/etc/localtime"
+#define TZDEFAULT "/etc/localtime"
 #endif /* !defined TZDEFAULT */
 
 #ifndef TZDEFRULES
-#define TZDEFRULES	"posixrules"
+#define TZDEFRULES "posixrules"
 #endif /* !defined TZDEFRULES */
 
-
 /* See Internet RFC 8536 for more details about the following format.  */
 
 /*
 ** Each file begins with. . .
 */
 
-#define	TZ_MAGIC	"TZif"
+#define TZ_MAGIC "TZif"
 
 struct tzhead {
-	char	tzh_magic[4];		/* TZ_MAGIC */
+  char tzh_magic[4];      /* TZ_MAGIC */
-	char	tzh_version[1];		/* '\0' or '2' or '3' as of 2013 */
+  char tzh_version[1];    /* '\0' or '2' or '3' as of 2013 */
-	char	tzh_reserved[15];	/* reserved; must be zero */
+  char tzh_reserved[15];  /* reserved; must be zero */
-	char	tzh_ttisutcnt[4];	/* coded number of trans. time flags */
+  char tzh_ttisutcnt[4];  /* coded number of trans. time flags */
-	char	tzh_ttisstdcnt[4];	/* coded number of trans. time flags */
+  char tzh_ttisstdcnt[4]; /* coded number of trans. time flags */
-	char	tzh_leapcnt[4];		/* coded number of leap seconds */
+  char tzh_leapcnt[4];    /* coded number of leap seconds */
-	char	tzh_timecnt[4];		/* coded number of transition times */
+  char tzh_timecnt[4];    /* coded number of transition times */
-	char	tzh_typecnt[4];		/* coded number of local time types */
+  char tzh_typecnt[4];    /* coded number of local time types */
-	char	tzh_charcnt[4];		/* coded number of abbr. chars */
+  char tzh_charcnt[4];    /* coded number of abbr. chars */
 };
 
 /*
@@ -103,21 +102,21 @@ struct tzhead {
 */
 
 #ifndef TZ_MAX_TIMES
-#define TZ_MAX_TIMES	2000
+#define TZ_MAX_TIMES 2000
 #endif /* !defined TZ_MAX_TIMES */
 
 #ifndef TZ_MAX_TYPES
 /* This must be at least 17 for Europe/Samara and Europe/Vilnius.  */
-#define TZ_MAX_TYPES	256 /* Limited by what (unsigned char)'s can hold */
+#define TZ_MAX_TYPES 256 /* Limited by what (unsigned char)'s can hold */
-#endif /* !defined TZ_MAX_TYPES */
+#endif                   /* !defined TZ_MAX_TYPES */
 
 #ifndef TZ_MAX_CHARS
-#define TZ_MAX_CHARS	50	/* Maximum number of abbreviation characters */
+#define TZ_MAX_CHARS 50 /* Maximum number of abbreviation characters */
-				/* (limited by what unsigned chars can hold) */
+                        /* (limited by what unsigned chars can hold) */
-#endif /* !defined TZ_MAX_CHARS */
+#endif                  /* !defined TZ_MAX_CHARS */
 
 #ifndef TZ_MAX_LEAPS
-#define TZ_MAX_LEAPS	50	/* Maximum number of leap second corrections */
+#define TZ_MAX_LEAPS 50 /* Maximum number of leap second corrections */
-#endif /* !defined TZ_MAX_LEAPS */
+#endif                  /* !defined TZ_MAX_LEAPS */
 
 #endif /* !defined TZFILE_H */

absl/time/internal/cctz/src/zone_info_source.cc

@@ -14,7 +14,10 @@
 
 #include "absl/time/internal/cctz/include/cctz/zone_info_source.h"
 
+#include "absl/base/config.h"
+
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace time_internal {
 namespace cctz {
 
@@ -24,9 +27,11 @@ std::string ZoneInfoSource::Version() const { return std::string(); }
 
 }  // namespace cctz
 }  // namespace time_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace time_internal {
 namespace cctz_extension {
 
@@ -36,8 +41,9 @@ namespace {
 // defers to the fallback factory.
 std::unique_ptr<absl::time_internal::cctz::ZoneInfoSource> DefaultFactory(
     const std::string& name,
-    const std::function<std::unique_ptr<absl::time_internal::cctz::ZoneInfoSource>(
+    const std::function<
-        const std::string& name)>& fallback_factory) {
+        std::unique_ptr<absl::time_internal::cctz::ZoneInfoSource>(
+            const std::string& name)>& fallback_factory) {
   return fallback_factory(name);
 }
 
@@ -53,8 +59,8 @@ std::unique_ptr<absl::time_internal::cctz::ZoneInfoSource> DefaultFactory(
 // Windows linker cannot handle that. Nor does the MinGW compiler know how to
 // pass "#pragma comment(linker, ...)" to the Windows linker.
 #if (__has_attribute(weak) || defined(__GNUC__)) && !defined(__MINGW32__)
-ZoneInfoSourceFactory zone_info_source_factory
+ZoneInfoSourceFactory zone_info_source_factory __attribute__((weak)) =
-    __attribute__((weak)) = DefaultFactory;
+    DefaultFactory;
 #elif defined(_MSC_VER) && !defined(__MINGW32__) && !defined(_LIBCPP_VERSION)
 extern ZoneInfoSourceFactory zone_info_source_factory;
 extern ZoneInfoSourceFactory default_factory;
@@ -77,4 +83,5 @@ ZoneInfoSourceFactory zone_info_source_factory = DefaultFactory;
 
 }  // namespace cctz_extension
 }  // namespace time_internal
+ABSL_NAMESPACE_END
 }  // namespace absl