diff options
| -rw-r--r-- | absl/container/internal/raw_hash_set_test.cc | 24 | ||||
| -rw-r--r-- | absl/hash/BUILD.bazel | 1 | ||||
| -rw-r--r-- | absl/hash/CMakeLists.txt | 1 | ||||
| -rw-r--r-- | absl/hash/internal/city.cc | 246 | ||||
| -rw-r--r-- | absl/hash/internal/city.h | 16 | ||||
| -rw-r--r-- | absl/hash/internal/city_crc.h | 41 | ||||
| -rw-r--r-- | absl/hash/internal/city_test.cc | 1461 | ||||
| -rw-r--r-- | absl/strings/str_format_test.cc | 26 | ||||
| -rw-r--r-- | absl/time/BUILD.bazel | 5 | ||||
| -rw-r--r-- | absl/time/CMakeLists.txt | 4 | ||||
| -rw-r--r-- | absl/time/civil_time.cc | 88 | ||||
| -rw-r--r-- | absl/time/civil_time.h | 487 | ||||
| -rw-r--r-- | absl/time/civil_time_benchmark.cc | 57 | ||||
| -rw-r--r-- | absl/time/civil_time_test.cc | 1073 | ||||
| -rw-r--r-- | absl/time/format_benchmark.cc | 7 | ||||
| -rw-r--r-- | absl/time/format_test.cc | 37 | ||||
| -rw-r--r-- | absl/time/internal/cctz/src/time_zone_posix.h | 40 | ||||
| -rw-r--r-- | absl/time/internal/test_util.cc | 6 | ||||
| -rw-r--r-- | absl/time/internal/test_util.h | 24 | ||||
| -rw-r--r-- | absl/time/time.cc | 299 | ||||
| -rw-r--r-- | absl/time/time.h | 614 | ||||
| -rw-r--r-- | absl/time/time_benchmark.cc | 38 | ||||
| -rw-r--r-- | absl/time/time_norm_test.cc | 306 | ||||
| -rw-r--r-- | absl/time/time_test.cc | 330 |
24 files changed, 2657 insertions, 2574 deletions
diff --git a/absl/container/internal/raw_hash_set_test.cc b/absl/container/internal/raw_hash_set_test.cc index cd33a3acb917..90917b705039 100644 --- a/absl/container/internal/raw_hash_set_test.cc +++ b/absl/container/internal/raw_hash_set_test.cc @@ -1029,7 +1029,6 @@ ExpectedStats XorSeedExpectedStats() { {{0.95, 0.1}}, {{0.95, 0}, {0.99, 2}, {0.999, 4}, {0.9999, 10}}}; } - break; case 16: if (kRandomizesInserts) { return {0.1, @@ -1042,10 +1041,8 @@ ExpectedStats XorSeedExpectedStats() { {{0.95, 0.05}}, {{0.95, 0}, {0.99, 1}, {0.999, 4}, {0.9999, 10}}}; } - break; - default: - ABSL_RAW_LOG(FATAL, "%s", "Unknown Group width"); } + ABSL_RAW_LOG(FATAL, "%s", "Unknown Group width"); return {}; } TEST(Table, DISABLED_EnsureNonQuadraticTopNXorSeedByProbeSeqLength) { @@ -1125,7 +1122,6 @@ ExpectedStats LinearTransformExpectedStats() { {{0.95, 0.3}}, {{0.95, 0}, {0.99, 3}, {0.999, 15}, {0.9999, 25}}}; } - break; case 16: if (kRandomizesInserts) { return {0.1, @@ -1138,10 +1134,8 @@ ExpectedStats LinearTransformExpectedStats() { {{0.95, 0.1}}, {{0.95, 0}, {0.99, 1}, {0.999, 6}, {0.9999, 10}}}; } - break; - default: - ABSL_RAW_LOG(FATAL, "%s", "Unknown Group width"); } + ABSL_RAW_LOG(FATAL, "%s", "Unknown Group width"); return {}; } TEST(Table, DISABLED_EnsureNonQuadraticTopNLinearTransformByProbeSeqLength) { @@ -1834,18 +1828,15 @@ std::vector<std::pair<double, double>> StringTablePefectRatios() { } else { return {{0.995, 0.01}, {0.97, 0.01}, {0.89, 0.02}}; } - break; case 16: if (kRandomizesInserts) { return {{0.973, 0.01}, {0.965, 0.01}, {0.92, 0.02}}; } else { return {{0.995, 0.005}, {0.99, 0.005}, {0.94, 0.01}}; } - break; - default: - // Ignore anything else. - return {}; } + ABSL_RAW_LOG(FATAL, "%s", "Unknown Group width"); + return {}; } // This is almost a change detector, but it allows us to know how we are @@ -1884,18 +1875,15 @@ std::vector<std::pair<double, double>> IntTablePefectRatios() { } else { return {{0.99, 0.01}, {0.99, 0.01}, {0.95, 0.02}}; } - break; case 16: if (kRandomizesInserts) { return {{0.98, 0.02}, {0.978, 0.02}, {0.96, 0.02}}; } else { return {{0.998, 0.003}, {0.995, 0.01}, {0.975, 0.02}}; } - break; - default: - // Ignore anything else. - return {}; } + ABSL_RAW_LOG(FATAL, "%s", "Unknown Group width"); + return {}; } // This is almost a change detector, but it allows us to know how we are diff --git a/absl/hash/BUILD.bazel b/absl/hash/BUILD.bazel index 50aa5506c11c..4f7c94ceb35a 100644 --- a/absl/hash/BUILD.bazel +++ b/absl/hash/BUILD.bazel @@ -93,7 +93,6 @@ cc_library( srcs = ["internal/city.cc"], hdrs = [ "internal/city.h", - "internal/city_crc.h", ], copts = ABSL_DEFAULT_COPTS, deps = [ diff --git a/absl/hash/CMakeLists.txt b/absl/hash/CMakeLists.txt index 35081e3774f8..474092f0f72a 100644 --- a/absl/hash/CMakeLists.txt +++ b/absl/hash/CMakeLists.txt @@ -20,7 +20,6 @@ list(APPEND HASH_PUBLIC_HEADERS list(APPEND HASH_INTERNAL_HEADERS "internal/city.h" - "internal/city_crc.h" "internal/hash.h" ) diff --git a/absl/hash/internal/city.cc b/absl/hash/internal/city.cc index 8f72dd1b7d0c..122906fab042 100644 --- a/absl/hash/internal/city.cc +++ b/absl/hash/internal/city.cc @@ -340,251 +340,5 @@ uint64_t CityHash64WithSeeds(const char *s, size_t len, uint64_t seed0, return HashLen16(CityHash64(s, len) - seed0, seed1); } -// A subroutine for CityHash128(). Returns a decent 128-bit hash for strings -// of any length representable in signed long. Based on City and Murmur. -static uint128 CityMurmur(const char *s, size_t len, uint128 seed) { - uint64_t a = Uint128Low64(seed); - uint64_t b = Uint128High64(seed); - uint64_t c = 0; - uint64_t d = 0; - int64_t l = len - 16; - if (l <= 0) { // len <= 16 - a = ShiftMix(a * k1) * k1; - c = b * k1 + HashLen0to16(s, len); - d = ShiftMix(a + (len >= 8 ? Fetch64(s) : c)); - } else { // len > 16 - c = HashLen16(Fetch64(s + len - 8) + k1, a); - d = HashLen16(b + len, c + Fetch64(s + len - 16)); - a += d; - do { - a ^= ShiftMix(Fetch64(s) * k1) * k1; - a *= k1; - b ^= a; - c ^= ShiftMix(Fetch64(s + 8) * k1) * k1; - c *= k1; - d ^= c; - s += 16; - l -= 16; - } while (l > 0); - } - a = HashLen16(a, c); - b = HashLen16(d, b); - return uint128(a ^ b, HashLen16(b, a)); -} - -uint128 CityHash128WithSeed(const char *s, size_t len, uint128 seed) { - if (len < 128) { - return CityMurmur(s, len, seed); - } - - // We expect len >= 128 to be the common case. Keep 56 bytes of state: - // v, w, x, y, and z. - std::pair<uint64_t, uint64_t> v, w; - uint64_t x = Uint128Low64(seed); - uint64_t y = Uint128High64(seed); - uint64_t z = len * k1; - v.first = Rotate(y ^ k1, 49) * k1 + Fetch64(s); - v.second = Rotate(v.first, 42) * k1 + Fetch64(s + 8); - w.first = Rotate(y + z, 35) * k1 + x; - w.second = Rotate(x + Fetch64(s + 88), 53) * k1; - - // This is the same inner loop as CityHash64(), manually unrolled. - do { - x = Rotate(x + y + v.first + Fetch64(s + 8), 37) * k1; - y = Rotate(y + v.second + Fetch64(s + 48), 42) * k1; - x ^= w.second; - y += v.first + Fetch64(s + 40); - z = Rotate(z + w.first, 33) * k1; - v = WeakHashLen32WithSeeds(s, v.second * k1, x + w.first); - w = WeakHashLen32WithSeeds(s + 32, z + w.second, y + Fetch64(s + 16)); - std::swap(z, x); - s += 64; - x = Rotate(x + y + v.first + Fetch64(s + 8), 37) * k1; - y = Rotate(y + v.second + Fetch64(s + 48), 42) * k1; - x ^= w.second; - y += v.first + Fetch64(s + 40); - z = Rotate(z + w.first, 33) * k1; - v = WeakHashLen32WithSeeds(s, v.second * k1, x + w.first); - w = WeakHashLen32WithSeeds(s + 32, z + w.second, y + Fetch64(s + 16)); - std::swap(z, x); - s += 64; - len -= 128; - } while (ABSL_PREDICT_TRUE(len >= 128)); - x += Rotate(v.first + z, 49) * k0; - y = y * k0 + Rotate(w.second, 37); - z = z * k0 + Rotate(w.first, 27); - w.first *= 9; - v.first *= k0; - // If 0 < len < 128, hash up to 4 chunks of 32 bytes each from the end of s. - for (size_t tail_done = 0; tail_done < len;) { - tail_done += 32; - y = Rotate(x + y, 42) * k0 + v.second; - w.first += Fetch64(s + len - tail_done + 16); - x = x * k0 + w.first; - z += w.second + Fetch64(s + len - tail_done); - w.second += v.first; - v = WeakHashLen32WithSeeds(s + len - tail_done, v.first + z, v.second); - v.first *= k0; - } - // At this point our 56 bytes of state should contain more than - // enough information for a strong 128-bit hash. We use two - // different 56-byte-to-8-byte hashes to get a 16-byte final result. - x = HashLen16(x, v.first); - y = HashLen16(y + z, w.first); - return uint128(HashLen16(x + v.second, w.second) + y, - HashLen16(x + w.second, y + v.second)); -} - -uint128 CityHash128(const char *s, size_t len) { - return len >= 16 - ? CityHash128WithSeed(s + 16, len - 16, - uint128(Fetch64(s), Fetch64(s + 8) + k0)) - : CityHash128WithSeed(s, len, uint128(k0, k1)); -} } // namespace hash_internal } // namespace absl - -#ifdef __SSE4_2__ -#include <nmmintrin.h> -#include "absl/hash/internal/city_crc.h" - -namespace absl { -namespace hash_internal { - -// Requires len >= 240. -static void CityHashCrc256Long(const char *s, size_t len, uint32_t seed, - uint64_t *result) { - uint64_t a = Fetch64(s + 56) + k0; - uint64_t b = Fetch64(s + 96) + k0; - uint64_t c = result[0] = HashLen16(b, len); - uint64_t d = result[1] = Fetch64(s + 120) * k0 + len; - uint64_t e = Fetch64(s + 184) + seed; - uint64_t f = 0; - uint64_t g = 0; - uint64_t h = c + d; - uint64_t x = seed; - uint64_t y = 0; - uint64_t z = 0; - - // 240 bytes of input per iter. - size_t iters = len / 240; - len -= iters * 240; - do { -#undef CHUNK -#define CHUNK(r) \ - PERMUTE3(x, z, y); \ - b += Fetch64(s); \ - c += Fetch64(s + 8); \ - d += Fetch64(s + 16); \ - e += Fetch64(s + 24); \ - f += Fetch64(s + 32); \ - a += b; \ - h += f; \ - b += c; \ - f += d; \ - g += e; \ - e += z; \ - g += x; \ - z = _mm_crc32_u64(z, b + g); \ - y = _mm_crc32_u64(y, e + h); \ - x = _mm_crc32_u64(x, f + a); \ - e = Rotate(e, r); \ - c += e; \ - s += 40 - - CHUNK(0); - PERMUTE3(a, h, c); - CHUNK(33); - PERMUTE3(a, h, f); - CHUNK(0); - PERMUTE3(b, h, f); - CHUNK(42); - PERMUTE3(b, h, d); - CHUNK(0); - PERMUTE3(b, h, e); - CHUNK(33); - PERMUTE3(a, h, e); - } while (--iters > 0); - - while (len >= 40) { - CHUNK(29); - e ^= Rotate(a, 20); - h += Rotate(b, 30); - g ^= Rotate(c, 40); - f += Rotate(d, 34); - PERMUTE3(c, h, g); - len -= 40; - } - if (len > 0) { - s = s + len - 40; - CHUNK(33); - e ^= Rotate(a, 43); - h += Rotate(b, 42); - g ^= Rotate(c, 41); - f += Rotate(d, 40); - } - result[0] ^= h; - result[1] ^= g; - g += h; - a = HashLen16(a, g + z); - x += y << 32; - b += x; - c = HashLen16(c, z) + h; - d = HashLen16(d, e + result[0]); - g += e; - h += HashLen16(x, f); - e = HashLen16(a, d) + g; - z = HashLen16(b, c) + a; - y = HashLen16(g, h) + c; - result[0] = e + z + y + x; - a = ShiftMix((a + y) * k0) * k0 + b; - result[1] += a + result[0]; - a = ShiftMix(a * k0) * k0 + c; - result[2] = a + result[1]; - a = ShiftMix((a + e) * k0) * k0; - result[3] = a + result[2]; -} - -// Requires len < 240. -static void CityHashCrc256Short(const char *s, size_t len, uint64_t *result) { - char buf[240]; - memcpy(buf, s, len); - memset(buf + len, 0, 240 - len); - CityHashCrc256Long(buf, 240, ~static_cast<uint32_t>(len), result); -} - -void CityHashCrc256(const char *s, size_t len, uint64_t *result) { - if (ABSL_PREDICT_TRUE(len >= 240)) { - CityHashCrc256Long(s, len, 0, result); - } else { - CityHashCrc256Short(s, len, result); - } -} - -uint128 CityHashCrc128WithSeed(const char *s, size_t len, uint128 seed) { - if (len <= 900) { - return CityHash128WithSeed(s, len, seed); - } else { - uint64_t result[4]; - CityHashCrc256(s, len, result); - uint64_t u = Uint128High64(seed) + result[0]; - uint64_t v = Uint128Low64(seed) + result[1]; - return uint128(HashLen16(u, v + result[2]), - HashLen16(Rotate(v, 32), u * k0 + result[3])); - } -} - -uint128 CityHashCrc128(const char *s, size_t len) { - if (len <= 900) { - return CityHash128(s, len); - } else { - uint64_t result[4]; - CityHashCrc256(s, len, result); - return uint128(result[2], result[3]); - } -} - -} // namespace hash_internal -} // namespace absl - -#endif diff --git a/absl/hash/internal/city.h b/absl/hash/internal/city.h index 55b37b875f0b..16df55635481 100644 --- a/absl/hash/internal/city.h +++ b/absl/hash/internal/city.h @@ -23,15 +23,6 @@ // is Murmur3. For 64-bit x86 code, CityHash64 is an excellent choice for hash // tables and most other hashing (excluding cryptography). // -// For 64-bit x86 code, on long strings, the picture is more complicated. -// On many recent Intel CPUs, such as Nehalem, Westmere, Sandy Bridge, etc., -// CityHashCrc128 appears to be faster than all competitors of comparable -// quality. CityHash128 is also good but not quite as fast. We believe our -// nearest competitor is Bob Jenkins' Spooky. We don't have great data for -// other 64-bit CPUs, but for long strings we know that Spooky is slightly -// faster than CityHash on some relatively recent AMD x86-64 CPUs, for example. -// Note that CityHashCrc128 is declared in citycrc.h. -// // For 32-bit x86 code, we don't know of anything faster than CityHash32 that // is of comparable quality. We believe our nearest competitor is Murmur3A. // (On 64-bit CPUs, it is typically faster to use the other CityHash variants.) @@ -79,13 +70,6 @@ uint64_t CityHash64WithSeed(const char *s, size_t len, uint64_t seed); uint64_t CityHash64WithSeeds(const char *s, size_t len, uint64_t seed0, uint64_t seed1); -// Hash function for a byte array. -uint128 CityHash128(const char *s, size_t len); - -// Hash function for a byte array. For convenience, a 128-bit seed is also -// hashed into the result. -uint128 CityHash128WithSeed(const char *s, size_t len, uint128 seed); - // Hash function for a byte array. Most useful in 32-bit binaries. uint32_t CityHash32(const char *s, size_t len); diff --git a/absl/hash/internal/city_crc.h b/absl/hash/internal/city_crc.h deleted file mode 100644 index 6be6557d213f..000000000000 --- a/absl/hash/internal/city_crc.h +++ /dev/null @@ -1,41 +0,0 @@ -// 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 -// -// http://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. -// -// This file declares the subset of the CityHash functions that require -// _mm_crc32_u64(). See the CityHash README for details. -// -// Functions in the CityHash family are not suitable for cryptography. - -#ifndef ABSL_HASH_INTERNAL_CITY_CRC_H_ -#define ABSL_HASH_INTERNAL_CITY_CRC_H_ - -#include "absl/hash/internal/city.h" - -namespace absl { -namespace hash_internal { - -// Hash function for a byte array. -uint128 CityHashCrc128(const char *s, size_t len); - -// Hash function for a byte array. For convenience, a 128-bit seed is also -// hashed into the result. -uint128 CityHashCrc128WithSeed(const char *s, size_t len, uint128 seed); - -// Hash function for a byte array. Sets result[0] ... result[3]. -void CityHashCrc256(const char *s, size_t len, uint64_t *result); - -} // namespace hash_internal -} // namespace absl - -#endif // ABSL_HASH_INTERNAL_CITY_CRC_H_ diff --git a/absl/hash/internal/city_test.cc b/absl/hash/internal/city_test.cc index 678da53d34d0..0427cd1afb7a 100644 --- a/absl/hash/internal/city_test.cc +++ b/absl/hash/internal/city_test.cc @@ -18,9 +18,6 @@ #include <cstdio> #include <iostream> #include "gtest/gtest.h" -#ifdef __SSE4_2__ -#include "absl/hash/internal/city_crc.h" -#endif namespace absl { namespace hash_internal { @@ -28,7 +25,6 @@ namespace hash_internal { static const uint64_t k0 = 0xc3a5c85c97cb3127ULL; static const uint64_t kSeed0 = 1234567; static const uint64_t kSeed1 = k0; -static const uint128 kSeed128(kSeed0, kSeed1); static const int kDataSize = 1 << 20; static const int kTestSize = 300; @@ -49,1754 +45,539 @@ void setup() { } #define C(x) 0x##x##ULL -static const uint64_t testdata[kTestSize][16] = { +static const uint64_t testdata[kTestSize][4] = { {C(9ae16a3b2f90404f), C(75106db890237a4a), C(3feac5f636039766), - C(3df09dfc64c09a2b), C(3cb540c392e51e29), C(6b56343feac0663), - C(5b7bc50fd8e8ad92), C(3df09dfc64c09a2b), C(3cb540c392e51e29), - C(6b56343feac0663), C(5b7bc50fd8e8ad92), C(95162f24e6a5f930), - C(6808bdf4f1eb06e0), C(b3b1f3a67b624d82), C(c9a62f12bd4cd80b), C(dc56d17a)}, {C(541150e87f415e96), C(1aef0d24b3148a1a), C(bacc300e1e82345a), - C(c3cdc41e1df33513), C(2c138ff2596d42f6), C(f58e9082aed3055f), - C(162e192b2957163d), C(c3cdc41e1df33513), C(2c138ff2596d42f6), - C(f58e9082aed3055f), C(162e192b2957163d), C(fb99e85e0d16f90c), - C(608462c15bdf27e8), C(e7d2c5c943572b62), C(1baaa9327642798c), C(99929334)}, - {C(f3786a4b25827c1), C(34ee1a2bf767bd1c), C(2f15ca2ebfb631f2), - C(3149ba1dac77270d), C(70e2e076e30703c), C(59bcc9659bc5296), - C(9ecbc8132ae2f1d7), C(3149ba1dac77270d), C(70e2e076e30703c), - C(59bcc9659bc5296), C(9ecbc8132ae2f1d7), C(a01d30789bad7cf2), - C(ae03fe371981a0e0), C(127e3883b8788934), C(d0ac3d4c0a6fca32), - C(4252edb7)}, + {C(f3786a4b25827c1), C(34ee1a2bf767bd1c), C(2f15ca2ebfb631f2), C(4252edb7)}, {C(ef923a7a1af78eab), C(79163b1e1e9a9b18), C(df3b2aca6e1e4a30), - C(2193fb7620cbf23b), C(8b6a8ff06cda8302), C(1a44469afd3e091f), - C(8b0449376612506), C(2193fb7620cbf23b), C(8b6a8ff06cda8302), - C(1a44469afd3e091f), C(8b0449376612506), C(e9d9d41c32ad91d1), - C(b44ab09f58e3c608), C(19e9175f9fcf784), C(839b3c9581b4a480), C(ebc34f3c)}, + C(ebc34f3c)}, {C(11df592596f41d88), C(843ec0bce9042f9c), C(cce2ea1e08b1eb30), - C(4d09e42f09cc3495), C(666236631b9f253b), C(d28b3763cd02b6a3), - C(43b249e57c4d0c1b), C(4d09e42f09cc3495), C(666236631b9f253b), - C(d28b3763cd02b6a3), C(43b249e57c4d0c1b), C(3887101c8adea101), - C(8a9355d4efc91df0), C(3e610944cc9fecfd), C(5bf9eb60b08ac0ce), C(26f2b463)}, {C(831f448bdc5600b3), C(62a24be3120a6919), C(1b44098a41e010da), - C(dc07df53b949c6b), C(d2b11b2081aeb002), C(d212b02c1b13f772), - C(c0bed297b4be1912), C(dc07df53b949c6b), C(d2b11b2081aeb002), - C(d212b02c1b13f772), C(c0bed297b4be1912), C(682d3d2ad304e4af), - C(40e9112a655437a1), C(268b09f7ee09843f), C(6b9698d43859ca47), C(b042c047)}, - {C(3eca803e70304894), C(d80de767e4a920a), C(a51cfbb292efd53d), - 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C(b87a326e413604bf), C(d8f9a5fa214b03ab), C(8a8bb8265771cf88), - C(a655319054f6e70f), C(b87a326e413604bf), C(d8f9a5fa214b03ab), - C(8a8bb8265771cf88), C(a655319054f6e70f), C(b499cb8e65a9af44), - C(bee7fafcc8307491), C(5d2e55fa9b27cda2), C(63b120f5fb2d6ee5), C(da14a8d0)}, {C(875638b9715d2221), C(d9ba0615c0c58740), C(616d4be2dfe825aa), - C(5df25f13ea7bc284), C(165edfaafd2598fb), C(af7215c5c718c696), - C(e9f2f9ca655e769), C(5df25f13ea7bc284), C(165edfaafd2598fb), - C(af7215c5c718c696), C(e9f2f9ca655e769), C(e459cfcb565d3d2d), - C(41d032631be2418a), C(c505db05fd946f60), C(54990394a714f5de), C(67333551)}, {C(fb686b2782994a8d), C(edee60693756bb48), C(e6bc3cae0ded2ef5), - C(58eb4d03b2c3ddf5), C(6d2542995f9189f1), C(c0beec58a5f5fea2), - C(ed67436f42e2a78b), C(58eb4d03b2c3ddf5), C(6d2542995f9189f1), - C(c0beec58a5f5fea2), C(ed67436f42e2a78b), C(dfec763cdb2b5193), - C(724a8d5345bd2d6), C(94d4fd1b81457c23), C(28e87c50cdede453), C(a0ebd66e)}, + C(a0ebd66e)}, {C(ab21d81a911e6723), C(4c31b07354852f59), C(835da384c9384744), - C(7f759dddc6e8549a), C(616dd0ca022c8735), C(94717ad4bc15ceb3), - C(f66c7be808ab36e), C(7f759dddc6e8549a), C(616dd0ca022c8735), - C(94717ad4bc15ceb3), C(f66c7be808ab36e), C(af8286b550b2f4b7), - C(745bd217d20a9f40), C(c73bfb9c5430f015), C(55e65922666e3fc2), C(4b769593)}, {C(33d013cc0cd46ecf), C(3de726423aea122c), C(116af51117fe21a9), - C(f271ba474edc562d), C(e6596e67f9dd3ebd), C(c0a288edf808f383), - C(b3def70681c6babc), C(f271ba474edc562d), C(e6596e67f9dd3ebd), - C(c0a288edf808f383), C(b3def70681c6babc), C(7da7864e9989b095), - C(bf2f8718693cd8a1), C(264a9144166da776), C(61ad90676870beb6), C(6aa75624)}, - {C(8ca92c7cd39fae5d), C(317e620e1bf20f1), C(4f0b33bf2194b97f), - C(45744afcf131dbee), C(97222392c2559350), C(498a19b280c6d6ed), - C(83ac2c36acdb8d49), C(45744afcf131dbee), C(97222392c2559350), - C(498a19b280c6d6ed), C(83ac2c36acdb8d49), C(7a69645c294daa62), - C(abe9d2be8275b3d2), C(39542019de371085), C(7f4efac8488cd6ad), - C(602a3f96)}, - {C(fdde3b03f018f43e), C(38f932946c78660), C(c84084ce946851ee), - C(b6dd09ba7851c7af), C(570de4e1bb13b133), C(c4e784eb97211642), - C(8285a7fcdcc7c58d), C(b6dd09ba7851c7af), C(570de4e1bb13b133), - C(c4e784eb97211642), C(8285a7fcdcc7c58d), C(d421f47990da899b), - C(8aed409c997eaa13), C(7a045929c2e29ccf), C(b373682a6202c86b), - C(cd183c4d)}, + {C(8ca92c7cd39fae5d), C(317e620e1bf20f1), C(4f0b33bf2194b97f), C(602a3f96)}, + {C(fdde3b03f018f43e), C(38f932946c78660), C(c84084ce946851ee), C(cd183c4d)}, {C(9c8502050e9c9458), C(d6d2a1a69964beb9), C(1675766f480229b5), - C(216e1d6c86cb524c), C(d01cf6fd4f4065c0), C(fffa4ec5b482ea0f), - C(a0e20ee6a5404ac1), C(216e1d6c86cb524c), C(d01cf6fd4f4065c0), - C(fffa4ec5b482ea0f), C(a0e20ee6a5404ac1), C(c1b037e4eebaf85e), - C(634e3d7c3ebf89eb), C(bcda972358c67d1), C(fd1352181e5b8578), C(960a4d07)}, + C(960a4d07)}, {C(348176ca2fa2fdd2), C(3a89c514cc360c2d), C(9f90b8afb318d6d0), - C(bceee07c11a9ac30), C(2e2d47dff8e77eb7), C(11a394cd7b6d614a), - C(1d7c41d54e15cb4a), C(bceee07c11a9ac30), C(2e2d47dff8e77eb7), - C(11a394cd7b6d614a), C(1d7c41d54e15cb4a), C(15baa5ae7312b0fc), - C(f398f596cc984635), C(8ab8fdf87a6788e8), C(b2b5c1234ab47e2), C(9ae998c4)}, + C(9ae998c4)}, {C(4a3d3dfbbaea130b), C(4e221c920f61ed01), C(553fd6cd1304531f), - C(bd2b31b5608143fe), C(ab717a10f2554853), C(293857f04d194d22), - C(d51be8fa86f254f0), C(bd2b31b5608143fe), C(ab717a10f2554853), - C(293857f04d194d22), C(d51be8fa86f254f0), C(1eee39e07686907e), - C(639039fe0e8d3052), C(d6ec1470cef97ff), C(370c82b860034f0f), C(74e2179d)}, + C(74e2179d)}, {C(b371f768cdf4edb9), C(bdef2ace6d2de0f0), C(e05b4100f7f1baec), - C(b9e0d415b4ebd534), C(c97c2a27efaa33d7), C(591cdb35f84ef9da), - C(a57d02d0e8e3756c), C(b9e0d415b4ebd534), C(c97c2a27efaa33d7), - C(591cdb35f84ef9da), C(a57d02d0e8e3756c), C(23f55f12d7c5c87b), - C(4c7ca0fe23221101), C(dbc3020480334564), C(d985992f32c236b1), C(ee9bae25)}, - {C(7a1d2e96934f61f), C(eb1760ae6af7d961), C(887eb0da063005df), - C(2228d6725e31b8ab), C(9b98f7e4d0142e70), C(b6a8c2115b8e0fe7), - C(b591e2f5ab9b94b1), C(2228d6725e31b8ab), C(9b98f7e4d0142e70), - C(b6a8c2115b8e0fe7), C(b591e2f5ab9b94b1), C(6c1feaa8065318e0), - C(4e7e2ca21c2e81fb), C(e9fe5d8ce7993c45), C(ee411fa2f12cf8df), - C(b66edf10)}, + {C(7a1d2e96934f61f), C(eb1760ae6af7d961), C(887eb0da063005df), C(b66edf10)}, {C(8be53d466d4728f2), C(86a5ac8e0d416640), C(984aa464cdb5c8bb), - C(87049e68f5d38e59), C(7d8ce44ec6bd7751), C(cc28d08ab414839c), - C(6c8f0bd34fe843e3), C(87049e68f5d38e59), C(7d8ce44ec6bd7751), - C(cc28d08ab414839c), C(6c8f0bd34fe843e3), C(b8496dcdc01f3e47), - C(2f03125c282ac26), C(82a8797ba3f5ef07), C(7c977a4d10bf52b8), C(d6209737)}, - {C(829677eb03abf042), C(43cad004b6bc2c0), C(f2f224756803971a), - C(98d0dbf796480187), C(fbcb5f3e1bef5742), C(5af2a0463bf6e921), - C(ad9555bf0120b3a3), C(98d0dbf796480187), C(fbcb5f3e1bef5742), - C(5af2a0463bf6e921), C(ad9555bf0120b3a3), C(283e39b3dc99f447), - C(bedaa1a4a0250c28), C(9d50546624ff9a57), C(4abaf523d1c090f6), C(b994a88)}, - {C(754435bae3496fc), C(5707fc006f094dcf), C(8951c86ab19d8e40), - C(57c5208e8f021a77), C(f7653fbb69cd9276), C(a484410af21d75cb), - C(f19b6844b3d627e8), C(57c5208e8f021a77), C(f7653fbb69cd9276), - C(a484410af21d75cb), C(f19b6844b3d627e8), C(f37400fc3ffd9514), - C(36ae0d821734edfd), C(5f37820af1f1f306), C(be637d40e6a5ad0), C(a05d43c0)}, + C(d6209737)}, + {C(829677eb03abf042), C(43cad004b6bc2c0), C(f2f224756803971a), C(b994a88)}, + {C(754435bae3496fc), C(5707fc006f094dcf), C(8951c86ab19d8e40), C(a05d43c0)}, {C(fda9877ea8e3805f), C(31e868b6ffd521b7), C(b08c90681fb6a0fd), - C(68110a7f83f5d3ff), C(6d77e045901b85a8), C(84ef681113036d8b), - C(3b9f8e3928f56160), C(68110a7f83f5d3ff), C(6d77e045901b85a8), - C(84ef681113036d8b), C(3b9f8e3928f56160), C(fc8b7f56c130835), - C(a11f3e800638e841), C(d9572267f5cf28c1), C(7897c8149803f2aa), C(c79f73a8)}, {C(2e36f523ca8f5eb5), C(8b22932f89b27513), C(331cd6ecbfadc1bb), - C(d1bfe4df12b04cbf), C(f58c17243fd63842), C(3a453cdba80a60af), - C(5737b2ca7470ea95), C(d1bfe4df12b04cbf), C(f58c17243fd63842), - C(3a453cdba80a60af), C(5737b2ca7470ea95), C(54d44a3f4477030c), - C(8168e02d4869aa7f), C(77f383a17778559d), C(95e1737d77a268fc), C(a490aff5)}, {C(21a378ef76828208), C(a5c13037fa841da2), C(506d22a53fbe9812), - C(61c9c95d91017da5), C(16f7c83ba68f5279), C(9c0619b0808d05f7), - C(83c117ce4e6b70a3), C(61c9c95d91017da5), C(16f7c83ba68f5279), - C(9c0619b0808d05f7), C(83c117ce4e6b70a3), C(cfb4c8af7fd01413), - C(fdef04e602e72296), C(ed6124d337889b1), C(4919c86707b830da), C(dfad65b4)}, - {C(ccdd5600054b16ca), C(f78846e84204cb7b), C(1f9faec82c24eac9), - C(58634004c7b2d19a), C(24bb5f51ed3b9073), C(46409de018033d00), - C(4a9805eed5ac802e), C(58634004c7b2d19a), C(24bb5f51ed3b9073), - C(46409de018033d00), C(4a9805eed5ac802e), C(e18de8db306baf82), - C(46bbf75f1fa025ff), C(5faf2fb09be09487), C(3fbc62bd4e558fb3), C(1d07dfb)}, + C(dfad65b4)}, + {C(ccdd5600054b16ca), C(f78846e84204cb7b), C(1f9faec82c24eac9), C(1d07dfb)}, {C(7854468f4e0cabd0), C(3a3f6b4f098d0692), C(ae2423ec7799d30d), - C(29c3529eb165eeba), C(443de3703b657c35), C(66acbce31ae1bc8d), - C(1acc99effe1d547e), C(29c3529eb165eeba), C(443de3703b657c35), - C(66acbce31ae1bc8d), C(1acc99effe1d547e), C(cf07f8a57906573d), - C(31bafb0bbb9a86e7), C(40c69492702a9346), C(7df61fdaa0b858af), C(416df9a0)}, {C(7f88db5346d8f997), C(88eac9aacc653798), C(68a4d0295f8eefa1), - C(ae59ca86f4c3323d), C(25906c09906d5c4c), C(8dd2aa0c0a6584ae), - C(232a7d96b38f40e9), C(ae59ca86f4c3323d), C(25906c09906d5c4c), - C(8dd2aa0c0a6584ae), C(232a7d96b38f40e9), C(8986ee00a2ed0042), - C(c49ae7e428c8a7d1), C(b7dd8280713ac9c2), C(e018720aed1ebc28), C(1f8fb9cc)}, {C(bb3fb5fb01d60fcf), C(1b7cc0847a215eb6), C(1246c994437990a1), - C(d4edc954c07cd8f3), C(224f47e7c00a30ab), C(d5ad7ad7f41ef0c6), - C(59e089281d869fd7), C(d4edc954c07cd8f3), C(224f47e7c00a30ab), - C(d5ad7ad7f41ef0c6), C(59e089281d869fd7), C(f29340d07a14b6f1), - C(c87c5ef76d9c4ef3), C(463118794193a9a), C(2922dcb0540f0dbc), C(7abf48e3)}, + C(7abf48e3)}, {C(2e783e1761acd84d), C(39158042bac975a0), C(1cd21c5a8071188d), - C(b1b7ec44f9302176), C(5cb476450dc0c297), C(dc5ef652521ef6a2), - C(3cc79a9e334e1f84), C(b1b7ec44f9302176), C(5cb476450dc0c297), - C(dc5ef652521ef6a2), C(3cc79a9e334e1f84), C(769e2a283dbcc651), - C(9f24b105c8511d3f), C(c31c15575de2f27e), C(ecfecf32c3ae2d66), C(dea4e3dd)}, {C(392058251cf22acc), C(944ec4475ead4620), C(b330a10b5cb94166), - C(54bc9bee7cbe1767), C(485820bdbe442431), C(54d6120ea2972e90), - C(f437a0341f29b72a), C(54bc9bee7cbe1767), C(485820bdbe442431), - C(54d6120ea2972e90), C(f437a0341f29b72a), C(8f30885c784d5704), - C(aa95376b16c7906a), C(e826928cfaf93dc3), C(20e8f54d1c16d7d8), C(c6064f22)}, - {C(adf5c1e5d6419947), C(2a9747bc659d28aa), C(95c5b8cb1f5d62c), - C(80973ea532b0f310), C(a471829aa9c17dd9), C(c2ff3479394804ab), - C(6bf44f8606753636), C(80973ea532b0f310), C(a471829aa9c17dd9), - C(c2ff3479394804ab), C(6bf44f8606753636), C(5184d2973e6dd827), - C(121b96369a332d9a), C(5c25d3475ab69e50), C(26d2961d62884168), - C(743bed9c)}, + {C(adf5c1e5d6419947), C(2a9747bc659d28aa), C(95c5b8cb1f5d62c), C(743bed9c)}, {C(6bc1db2c2bee5aba), C(e63b0ed635307398), C(7b2eca111f30dbbc), - C(230d2b3e47f09830), C(ec8624a821c1caf4), C(ea6ec411cdbf1cb1), - C(5f38ae82af364e27), C(230d2b3e47f09830), C(ec8624a821c1caf4), - C(ea6ec411cdbf1cb1), C(5f38ae82af364e27), C(a519ef515ea7187c), - C(6bad5efa7ebae05f), C(748abacb11a74a63), C(a28eef963d1396eb), C(fce254d5)}, {C(b00f898229efa508), C(83b7590ad7f6985c), C(2780e70a0592e41d), - C(7122413bdbc94035), C(e7f90fae33bf7763), C(4b6bd0fb30b12387), - C(557359c0c44f48ca), C(7122413bdbc94035), C(e7f90fae33bf7763), - C(4b6bd0fb30b12387), C(557359c0c44f48ca), C(d5656c3d6bc5f0d), - C(983ff8e5e784da99), C(628479671b445bf), C(e179a1e27ce68f5d), C(e47ec9d1)}, + C(e47ec9d1)}, {C(b56eb769ce0d9a8c), C(ce196117bfbcaf04), C(b26c3c3797d66165), - C(5ed12338f630ab76), C(fab19fcb319116d), C(167f5f42b521724b), - C(c4aa56c409568d74), C(5ed12338f630ab76), C(fab19fcb319116d), - C(167f5f42b521724b), C(c4aa56c409568d74), C(75fff4b42f8e9778), - C(94218f94710c1ea3), C(b7b05efb738b06a6), C(83fff2deabf9cd3), C(334a145c)}, + C(334a145c)}, {C(70c0637675b94150), C(259e1669305b0a15), C(46e1dd9fd387a58d), - C(fca4e5bc9292788e), C(cd509dc1facce41c), C(bbba575a59d82fe), - C(4e2e71c15b45d4d3), C(fca4e5bc9292788e), C(cd509dc1facce41c), - C(bbba575a59d82fe), C(4e2e71c15b45d4d3), C(5dc54582ead999c), - C(72612d1571963c6f), C(30318a9d2d3d1829), C(785dd00f4cc9c9a0), C(adec1e3c)}, {C(74c0b8a6821faafe), C(abac39d7491370e7), C(faf0b2a48a4e6aed), - C(967e970df9673d2a), C(d465247cffa415c0), C(33a1df0ca1107722), - C(49fc2a10adce4a32), C(967e970df9673d2a), C(d465247cffa415c0), - C(33a1df0ca1107722), C(49fc2a10adce4a32), C(c5707e079a284308), - C(573028266635dda6), C(f786f5eee6127fa0), C(b30d79cebfb51266), C(f6a9fbf8)}, {C(5fb5e48ac7b7fa4f), C(a96170f08f5acbc7), C(bbf5c63d4f52a1e5), - C(6cc09e60700563e9), C(d18f23221e964791), C(ffc23eeef7af26eb), - C(693a954a3622a315), C(815308a32a9b0daf), C(efb2ab27bf6fd0bd), - C(9f1ffc0986111118), C(f9a3aa1778ea3985), C(698fe54b2b93933b), - C(dacc2b28404d0f10), C(815308a32a9b0daf), C(efb2ab27bf6fd0bd), C(5398210c)}, }; void TestUnchanging(const uint64_t* expected, int offset, int len) { - const uint128 u = CityHash128(data + offset, len); - const uint128 v = CityHash128WithSeed(data + offset, len, kSeed128); EXPECT_EQ(expected[0], CityHash64(data + offset, len)); - EXPECT_EQ(expected[15], CityHash32(data + offset, len)); + EXPECT_EQ(expected[3], CityHash32(data + offset, len)); EXPECT_EQ(expected[1], CityHash64WithSeed(data + offset, len, kSeed0)); EXPECT_EQ(expected[2], CityHash64WithSeeds(data + offset, len, kSeed0, kSeed1)); - EXPECT_EQ(expected[3], Uint128Low64(u)); - EXPECT_EQ(expected[4], Uint128High64(u)); - EXPECT_EQ(expected[5], Uint128Low64(v)); - EXPECT_EQ(expected[6], Uint128High64(v)); -#ifdef __SSE4_2__ - const uint128 y = CityHashCrc128(data + offset, len); - const uint128 z = CityHashCrc128WithSeed(data + offset, len, kSeed128); - uint64_t crc256_results[4]; - CityHashCrc256(data + offset, len, crc256_results); - EXPECT_EQ(expected[7], Uint128Low64(y)); - EXPECT_EQ(expected[8], Uint128High64(y)); - EXPECT_EQ(expected[9], Uint128Low64(z)); - EXPECT_EQ(expected[10], Uint128High64(z)); - for (int i = 0; i < 4; i++) { - EXPECT_EQ(expected[11 + i], crc256_results[i]); - } -#endif } TEST(CityHashTest, Unchanging) { diff --git a/absl/strings/str_format_test.cc b/absl/strings/str_format_test.cc index aa14e211709a..ea9a3a176612 100644 --- a/absl/strings/str_format_test.cc +++ b/absl/strings/str_format_test.cc @@ -605,35 +605,21 @@ TEST_F(ParsedFormatTest, RegressionMixPositional) { // Some codegen thunks that we can use to easily dump the generated assembly for // different StrFormat calls. -inline std::string CodegenAbslStrFormatInt(int i) { +std::string CodegenAbslStrFormatInt(int i) { // NOLINT return absl::StrFormat("%d", i); } -inline std::string CodegenAbslStrFormatIntStringInt64(int i, const std::string& s, - int64_t i64) { +std::string CodegenAbslStrFormatIntStringInt64(int i, const std::string& s, + int64_t i64) { // NOLINT return absl::StrFormat("%d %s %d", i, s, i64); } -inline void CodegenAbslStrAppendFormatInt(std::string* out, int i) { +void CodegenAbslStrAppendFormatInt(std::string* out, int i) { // NOLINT absl::StrAppendFormat(out, "%d", i); } -inline void CodegenAbslStrAppendFormatIntStringInt64(std::string* out, int i, +void CodegenAbslStrAppendFormatIntStringInt64(std::string* out, int i, const std::string& s, - int64_t i64) { + int64_t i64) { // NOLINT absl::StrAppendFormat(out, "%d %s %d", i, s, i64); } - -auto absl_internal_str_format_force_codegen_funcs = std::make_tuple( - CodegenAbslStrFormatInt, CodegenAbslStrFormatIntStringInt64, - CodegenAbslStrAppendFormatInt, CodegenAbslStrAppendFormatIntStringInt64); - -bool absl_internal_str_format_force_codegen_always_false; -// Force the compiler to generate the functions by making it look like we -// escape the function pointers. -// It can't statically know that -// absl_internal_str_format_force_codegen_always_false is not changed by someone -// else. -bool absl_internal_str_format_force_codegen = - absl_internal_str_format_force_codegen_always_false && - printf("%p", &absl_internal_str_format_force_codegen_funcs) == 0; diff --git a/absl/time/BUILD.bazel b/absl/time/BUILD.bazel index c7c16d4376c7..969ddd2e6acf 100644 --- a/absl/time/BUILD.bazel +++ b/absl/time/BUILD.bazel @@ -27,6 +27,7 @@ licenses(["notice"]) # Apache 2.0 cc_library( name = "time", srcs = [ + "civil_time.cc", "clock.cc", "duration.cc", "format.cc", @@ -35,6 +36,7 @@ cc_library( "time.cc", ], hdrs = [ + "civil_time.h", "clock.h", "time.h", ], @@ -72,10 +74,10 @@ cc_library( cc_test( name = "time_test", srcs = [ + "civil_time_test.cc", "clock_test.cc", "duration_test.cc", "format_test.cc", - "time_norm_test.cc", "time_test.cc", "time_zone_test.cc", ], @@ -94,6 +96,7 @@ cc_test( cc_test( name = "time_benchmark", srcs = [ + "civil_time_benchmark.cc", "clock_benchmark.cc", "duration_benchmark.cc", "format_benchmark.cc", diff --git a/absl/time/CMakeLists.txt b/absl/time/CMakeLists.txt index 06272364f14e..53216cda055b 100644 --- a/absl/time/CMakeLists.txt +++ b/absl/time/CMakeLists.txt @@ -15,6 +15,7 @@ # list(APPEND TIME_PUBLIC_HEADERS + "civil_time.h" "clock.h" "time.h" ) @@ -29,6 +30,7 @@ list(APPEND TIME_INTERNAL_HEADERS ) list(APPEND TIME_SRC + "civil_time.cc" "time.cc" "clock.cc" "duration.cc" @@ -74,11 +76,11 @@ absl_library( # test time_test list(APPEND TIME_TEST_SRC + "civil_time_test.cc" "time_test.cc" "clock_test.cc" "duration_test.cc" "format_test.cc" - "time_norm_test.cc" "time_test.cc" "time_zone_test.cc" "internal/test_util.cc" diff --git a/absl/time/civil_time.cc b/absl/time/civil_time.cc new file mode 100644 index 000000000000..56541799fca3 --- /dev/null +++ b/absl/time/civil_time.cc @@ -0,0 +1,88 @@ +// 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 +// +// http://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/time/civil_time.h" + +#include <cstdlib> +#include <string> + +#include "absl/strings/str_cat.h" +#include "absl/time/time.h" + +namespace absl { + +namespace { + +// Since a civil time has a larger year range than absl::Time (64-bit years vs +// 64-bit seconds, respectively) we normalize years to roughly +/- 400 years +// around the year 2400, which will produce an equivalent year in a range that +// absl::Time can handle. +inline civil_year_t NormalizeYear(civil_year_t year) { + return 2400 + year % 400; +} + +// Formats the given CivilSecond according to the given format. +std::string FormatYearAnd(string_view fmt, CivilSecond cs) { + const CivilSecond ncs(NormalizeYear(cs.year()), cs.month(), cs.day(), + cs.hour(), cs.minute(), cs.second()); + const TimeZone utc = UTCTimeZone(); + // TODO(absl-team): Avoid conversion of fmt std::string. + return StrCat(cs.year(), FormatTime(std::string(fmt), FromCivil(ncs, utc), utc)); +} + +} // namespace + +std::string FormatCivilTime(CivilSecond c) { + return FormatYearAnd("-%m-%dT%H:%M:%S", c); +} +std::string FormatCivilTime(CivilMinute c) { + return FormatYearAnd("-%m-%dT%H:%M", c); +} +std::string FormatCivilTime(CivilHour c) { + return FormatYearAnd("-%m-%dT%H", c); +} +std::string FormatCivilTime(CivilDay c) { + return FormatYearAnd("-%m-%d", c); +} +std::string FormatCivilTime(CivilMonth c) { + return FormatYearAnd("-%m", c); +} +std::string FormatCivilTime(CivilYear c) { + return FormatYearAnd("", c); +} + +namespace time_internal { + +std::ostream& operator<<(std::ostream& os, CivilYear y) { + return os << FormatCivilTime(y); +} +std::ostream& operator<<(std::ostream& os, CivilMonth m) { + return os << FormatCivilTime(m); +} +std::ostream& operator<<(std::ostream& os, CivilDay d) { + return os << FormatCivilTime(d); +} +std::ostream& operator<<(std::ostream& os, CivilHour h) { + return os << FormatCivilTime(h); +} +std::ostream& operator<<(std::ostream& os, CivilMinute m) { + return os << FormatCivilTime(m); +} +std::ostream& operator<<(std::ostream& os, CivilSecond s) { + return os << FormatCivilTime(s); +} + +} // namespace time_internal + +} // namespace absl diff --git a/absl/time/civil_time.h b/absl/time/civil_time.h new file mode 100644 index 000000000000..a1f553059939 --- /dev/null +++ b/absl/time/civil_time.h @@ -0,0 +1,487 @@ +// 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 +// +// http://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. +// +// ----------------------------------------------------------------------------- +// File: civil_time.h +// ----------------------------------------------------------------------------- +// +// This header file defines abstractions for computing with "civil time". +// The term "civil time" refers to the legally recognized human-scale time +// that is represented by the six fields `YYYY-MM-DD hh:mm:ss`. A "date" +// is perhaps the most common example of a civil time (represented here as +// an `absl::CivilDay`). +// +// Modern-day civil time follows the Gregorian Calendar and is a +// time-zone-independent concept: a civil time of "2015-06-01 12:00:00", for +// example, is not tied to a time zone. Put another way, a civil time does not +// map to a unique point in time; a civil time must be mapped to an absolute +// time *through* a time zone. +// +// Because a civil time is what most people think of as "time," it is common to +// map absolute times to civil times to present to users. +// +// Time zones define the relationship between absolute and civil times. Given an +// absolute or civil time and a time zone, you can compute the other time: +// +// Civil Time = F(Absolute Time, Time Zone) +// Absolute Time = G(Civil Time, Time Zone) +// +// The Abseil time library allows you to construct such civil times from +// absolute times; consult time.h for such functionality. +// +// This library provides six classes for constructing civil-time objects, and +// provides several helper functions for rounding, iterating, and performing +// arithmetic on civil-time objects, while avoiding complications like +// daylight-saving time (DST): +// +// * `absl::CivilSecond` +// * `absl::CivilMinute` +// * `absl::CivilHour` +// * `absl::CivilDay` +// * `absl::CivilMonth` +// * `absl::CivilYear` +// +// Example: +// +// // Construct a civil-time object for a specific day +// const absl::CivilDay cd(1969, 07, 20); +// +// // Construct a civil-time object for a specific second +// const absl::CivilSecond cd(2018, 8, 1, 12, 0, 1); +// +// Note: In C++14 and later, this library is usable in a constexpr context. +// +// Example: +// +// // Valid in C++14 +// constexpr absl::CivilDay cd(1969, 07, 20); +// + +#ifndef ABSL_TIME_CIVIL_TIME_H_ +#define ABSL_TIME_CIVIL_TIME_H_ + +#include <string> + +#include "absl/base/port.h" // Needed for string vs std::string +#include "absl/strings/string_view.h" +#include "absl/time/internal/cctz/include/cctz/civil_time.h" + +namespace absl { + +namespace time_internal { +struct second_tag : cctz::detail::second_tag {}; +struct minute_tag : second_tag, cctz::detail::minute_tag {}; +struct hour_tag : minute_tag, cctz::detail::hour_tag {}; +struct day_tag : hour_tag, cctz::detail::day_tag {}; +struct month_tag : day_tag, cctz::detail::month_tag {}; +struct year_tag : month_tag, cctz::detail::year_tag {}; +} // namespace time_internal + +// ----------------------------------------------------------------------------- +// CivilSecond, CivilMinute, CivilHour, CivilDay, CivilMonth, CivilYear +// ----------------------------------------------------------------------------- +// +// Each of these civil-time types is a simple value type with the same +// interface for construction and the same six accessors for each of the civil +// time fields (year, month, day, hour, minute, and second, aka YMDHMS). These +// classes differ only in their alignment, which is indicated by the type name +// and specifies the field on which arithmetic operates. +// +// CONSTRUCTION +// +// Each of the civil-time types can be constructed in two ways: by directly +// passing to the constructor up to six integers representing the YMDHMS fields, +// or by copying the YMDHMS fields from a differently aligned civil-time type. +// Omitted fields are assigned their minimum valid value. Hours, minutes, and +// seconds will be set to 0, month and day will be set to 1. Since there is no +// minimum year, the default is 1970. +// +// Examples: +// +// absl::CivilDay default_value; // 1970-01-01 00:00:00 +// +// absl::CivilDay a(2015, 2, 3); // 2015-02-03 00:00:00 +// absl::CivilDay b(2015, 2, 3, 4, 5, 6); // 2015-02-03 00:00:00 +// absl::CivilDay c(2015); // 2015-01-01 00:00:00 +// +// absl::CivilSecond ss(2015, 2, 3, 4, 5, 6); // 2015-02-03 04:05:06 +// absl::CivilMinute mm(ss); // 2015-02-03 04:05:00 +// absl::CivilHour hh(mm); // 2015-02-03 04:00:00 +// absl::CivilDay d(hh); // 2015-02-03 00:00:00 +// absl::CivilMonth m(d); // 2015-02-01 00:00:00 +// absl::CivilYear y(m); // 2015-01-01 00:00:00 +// +// m = absl::CivilMonth(y); // 2015-01-01 00:00:00 +// d = absl::CivilDay(m); // 2015-01-01 00:00:00 +// hh = absl::CivilHour(d); // 2015-01-01 00:00:00 +// mm = absl::CivilMinute(hh); // 2015-01-01 00:00:00 +// ss = absl::CivilSecond(mm); // 2015-01-01 00:00:00 +// +// Each civil-time class is aligned to the civil-time field indicated in the +// class's name after normalization. Alignment is performed by setting all the +// inferior fields to their minimum valid value (as described above). The +// following are examples of how each of the six types would align the fields +// representing November 22, 2015 at 12:34:56 in the afternoon. (Note: the +// string format used here is not important; it's just a shorthand way of +// showing the six YMDHMS fields.) +// +// absl::CivilSecond : 2015-11-22 12:34:56 +// absl::CivilMinute : 2015-11-22 12:34:00 +// absl::CivilHour : 2015-11-22 12:00:00 +// absl::CivilDay : 2015-11-22 00:00:00 +// absl::CivilMonth : 2015-11-01 00:00:00 +// absl::CivilYear : 2015-01-01 00:00:00 +// +// Each civil-time type performs arithmetic on the field to which it is +// aligned. This means that adding 1 to an absl::CivilDay increments the day +// field (normalizing as necessary), and subtracting 7 from an absl::CivilMonth +// operates on the month field (normalizing as necessary). All arithmetic +// produces a valid civil time. Difference requires two similarly aligned +// civil-time objects and returns the scalar answer in units of the objects' +// alignment. For example, the difference between two absl::CivilHour objects +// will give an answer in units of civil hours. +// +// ALIGNMENT CONVERSION +// +// The alignment of a civil-time object cannot change, but the object may be +// used to construct a new object with a different alignment. This is referred +// to as "realigning". When realigning to a type with the same or more +// precision (e.g., absl::CivilDay -> absl::CivilSecond), the conversion may be +// performed implicitly since no information is lost. However, if information +// could be discarded (e.g., CivilSecond -> CivilDay), the conversion must +// be explicit at the call site. +// +// Examples: +// +// void UseDay(absl::CivilDay day); +// +// absl::CivilSecond cs; +// UseDay(cs); // Won't compile because data may be discarded +// UseDay(absl::CivilDay(cs)); // OK: explicit conversion +// +// absl::CivilDay cd; +// UseDay(cd); // OK: no conversion needed +// +// absl::CivilMonth cm; +// UseDay(cm); // OK: implicit conversion to absl::CivilDay +// +// NORMALIZATION +// +// Normalization takes invalid values and adjusts them to produce valid values. +// Within the civil-time library, integer arguments passed to the Civil* +// constructors may be out-of-range, in which case they are normalized by +// carrying overflow into a field of courser granularity to produce valid +// civil-time objects. This normalization enables natural arithmetic on +// constructor arguments without worrying about the field's range. +// +// Examples: +// +// // Out-of-range; normalized to 2016-11-01 +// absl::CivilDay d(2016, 10, 32); +// // Out-of-range, negative: normalized to 2016-10-30T23 +// absl::CivilHour h1(2016, 10, 31, -1); +// // Normalization is cumulative: normalized to 2016-10-30T23 +// absl::CivilHour h2(2016, 10, 32, -25); +// +// Note: If normalization is undesired, you can signal an error by comparing +// the constructor arguments to the normalized values returned by the YMDHMS +// properties. +// +// COMPARISON +// +// Comparison between civil-time objects considers all six YMDHMS fields, +// regardless of the type's alignment. Comparison between differently aligned +// civil-time types is allowed. +// +// Examples: +// +// absl::CivilDay feb_3(2015, 2, 3); // 2015-02-03 00:00:00 +// absl::CivilDay mar_4(2015, 3, 4); // 2015-03-04 00:00:00 +// // feb_3 < mar_4 +// // absl::CivilYear(feb_3) == absl::CivilYear(mar_4) +// +// absl::CivilSecond feb_3_noon(2015, 2, 3, 12, 0, 0); // 2015-02-03 12:00:00 +// // feb_3 < feb_3_noon +// // feb_3 == absl::CivilDay(feb_3_noon) +// +// // Iterates all the days of February 2015. +// for (absl::CivilDay d(2015, 2, 1); d < absl::CivilMonth(2015, 3); ++d) { +// // ... +// } +// +// ARITHMETIC +// +// Civil-time types support natural arithmetic operators such as addition, +// subtraction, and difference. Arithmetic operates on the civil-time field +// indicated in the type's name. Difference operators require arguments with +// the same alignment and return the answer in units of the alignment. +// +// Example: +// +// absl::CivilDay a(2015, 2, 3); +// ++a; // 2015-02-04 00:00:00 +// --a; // 2015-02-03 00:00:00 +// absl::CivilDay b = a + 1; // 2015-02-04 00:00:00 +// absl::CivilDay c = 1 + b; // 2015-02-05 00:00:00 +// int n = c - a; // n = 2 (civil days) +// int m = c - absl::CivilMonth(c); // Won't compile: different types. +// +// ACCESSORS +// +// Each civil-time type has accessors for all six of the civil-time fields: +// year, month, day, hour, minute, and second. +// +// civil_year_t year() +// int month() +// int day() +// int hour() +// int minute() +// int second() +// +// Recall that fields inferior to the type's aligment will be set to their +// minimum valid value. +// +// Example: +// +// absl::CivilDay d(2015, 6, 28); +// // d.year() == 2015 +// // d.month() == 6 +// // d.day() == 28 +// // d.hour() == 0 +// // d.minute() == 0 +// // d.second() == 0 +// +// CASE STUDY: Adding a month to January 31. +// +// One of the classic questions that arises when considering a civil time +// library (or a date library or a date/time library) is this: +// "What is the result of adding a month to January 31?" +// This is an interesting question because it is unclear what is meant by a +// "month", and several different answers are possible, depending on context: +// +// 1. March 3 (or 2 if a leap year), if "add a month" means to add a month to +// the current month, and adjust the date to overflow the extra days into +// March. In this case the result of "February 31" would be normalized as +// within the civil-time library. +// 2. February 28 (or 29 if a leap year), if "add a month" means to add a +// month, and adjust the date while holding the resulting month constant. +// In this case, the result of "February 31" would be truncated to the last +// day in February. +// 3. An error. The caller may get some error, an exception, an invalid date +// object, or perhaps return `false`. This may make sense because there is +// no single unambiguously correct answer to the question. +// +// Practically speaking, any answer that is not what the programmer intended +// is the wrong answer. +// +// The Abseil time library avoids this problem by making it impossible to +// ask ambiguous questions. All civil-time objects are aligned to a particular +// civil-field boundary (such as aligned to a year, month, day, hour, minute, +// or second), and arithmetic operates on the field to which the object is +// aligned. This means that in order to "add a month" the object must first be +// aligned to a month boundary, which is equivalent to the first day of that +// month. +// +// Of course, there are ways to compute an answer the question at hand using +// this Abseil time library, but they require the programmer to be explicit +// about the answer they expect. To illustrate, let's see how to compute all +// three of the above possible answers to the question of "Jan 31 plus 1 +// month": +// +// Example: +// +// const absl::CivilDay d(2015, 1, 31); +// +// // Answer 1: +// // Add 1 to the month field in the constructor, and rely on normalization. +// const auto normalized = absl::CivilDay(d.year(), d.month() + 1, d.day()); +// // normalized == 2015-03-03 (aka Feb 31) +// +// // Answer 2: +// // Add 1 to month field, capping to the end of next month. +// const auto next_month = absl::CivilMonth(d) + 1; +// const auto last_day_of_next_month = absl::CivilDay(next_month + 1) - 1; +// const auto capped = std::min(normalized, last_day_of_next_month); +// // capped == 2015-02-28 +// +// // Answer 3: +// // Signal an error if the normalized answer is not in next month. +// if (absl::CivilMonth(normalized) != next_month) { +// // error, month overflow +// } +// +using CivilSecond = + time_internal::cctz::detail::civil_time<time_internal::second_tag>; +using CivilMinute = + time_internal::cctz::detail::civil_time<time_internal::minute_tag>; +using CivilHour = + time_internal::cctz::detail::civil_time<time_internal::hour_tag>; +using CivilDay = + time_internal::cctz::detail::civil_time<time_internal::day_tag>; +using CivilMonth = + time_internal::cctz::detail::civil_time<time_internal::month_tag>; +using CivilYear = + time_internal::cctz::detail::civil_time<time_internal::year_tag>; + +// civil_year_t +// +// Type alias of a civil-time year value. This type is guaranteed to (at least) +// support any year value supported by `time_t`. +// +// Example: +// +// absl::CivilSecond cs = ...; +// absl::civil_year_t y = cs.year(); +// cs = absl::CivilSecond(y, 1, 1, 0, 0 0); // CivilSecond(CivilYear(cs)) +// +using civil_year_t = time_internal::cctz::year_t; + +// civil_diff_t +// +// Type alias of the difference between two civil-time values. +// This type is used to indicate arguments that are not +// normalized (such as parameters to the civil-time constructors), the results +// of civil-time subtraction, or the operand to civil-time addition. +// +// Example: +// +// absl::civil_diff_t n_sec = cs1 - cs2; // cs1 == cs2 + n_sec; +// +using civil_diff_t = time_internal::cctz::diff_t; + +// Weekday::monday, Weekday::tuesday, Weekday::wednesday, Weekday::thursday, +// Weekday::friday, Weekday::saturday, Weekday::sunday +// +// The Weekday enum class represents the civil-time concept of a "weekday" with +// members for all days of the week. +// +// absl::Weekday wd = absl::Weekday::thursday; +// +using Weekday = time_internal::cctz::weekday; + +// GetWeekday() +// +// Returns the absl::Weekday for the given absl::CivilDay. +// +// Example: +// +// absl::CivilDay a(2015, 8, 13); +// absl::Weekday wd = absl::GetWeekday(a); // wd == absl::Weekday::thursday +// +inline Weekday GetWeekday(CivilDay cd) { + return time_internal::cctz::get_weekday(cd); +} + +// NextWeekday() +// PrevWeekday() +// +// Returns the absl::CivilDay that strictly follows or precedes a given +// absl::CivilDay, and that falls on the given absl::Weekday. +// +// Example, given the following month: +// +// August 2015 +// Su Mo Tu We Th Fr Sa +// 1 +// 2 3 4 5 6 7 8 +// 9 10 11 12 13 14 15 +// 16 17 18 19 20 21 22 +// 23 24 25 26 27 28 29 +// 30 31 +// +// absl::CivilDay a(2015, 8, 13); +// // absl::GetWeekday(a) == absl::Weekday::thursday +// absl::CivilDay b = absl::NextWeekday(a, absl::Weekday::thursday); +// // b = 2015-08-20 +// absl::CivilDay c = absl::PrevWeekday(a, absl::Weekday::thursday); +// // c = 2015-08-06 +// +// absl::CivilDay d = ... +// // Gets the following Thursday if d is not already Thursday +// absl::CivilDay thurs1 = absl::PrevWeekday(d, absl::Weekday::thursday) + 7; +// // Gets the previous Thursday if d is not already Thursday +// absl::CivilDay thurs2 = absl::NextWeekday(d, absl::Weekday::thursday) - 7; +// +inline CivilDay NextWeekday(CivilDay cd, Weekday wd) { + return CivilDay(time_internal::cctz::next_weekday(cd, wd)); +} +inline CivilDay PrevWeekday(CivilDay cd, Weekday wd) { + return CivilDay(time_internal::cctz::prev_weekday(cd, wd)); +} + +// GetYearDay() +// +// Returns the day-of-year for the given absl::CivilDay. +// +// Example: +// +// absl::CivilDay a(2015, 1, 1); +// int yd_jan_1 = absl::GetYearDay(a); // yd_jan_1 = 1 +// absl::CivilDay b(2015, 12, 31); +// int yd_dec_31 = absl::GetYearDay(b); // yd_dec_31 = 365 +// +inline int GetYearDay(CivilDay cd) { + return time_internal::cctz::get_yearday(cd); +} + +// FormatCivilTime() +// +// Formats the given civil-time value into a string value of the following +// format: +// +// Type | Format +// --------------------------------- +// CivilSecond | YYYY-MM-DDTHH:MM:SS +// CivilMinute | YYYY-MM-DDTHH:MM +// CivilHour | YYYY-MM-DDTHH +// CivilDay | YYYY-MM-DD +// CivilMonth | YYYY-MM +// CivilYear | YYYY +// +// Example: +// +// absl::CivilDay d = absl::CivilDay(1969, 7, 20); +// string day_string = absl::FormatCivilTime(d); // "1969-07-20" +// +std::string FormatCivilTime(CivilSecond c); +std::string FormatCivilTime(CivilMinute c); +std::string FormatCivilTime(CivilHour c); +std::string FormatCivilTime(CivilDay c); +std::string FormatCivilTime(CivilMonth c); +std::string FormatCivilTime(CivilYear c); + +namespace time_internal { // For functions found via ADL on civil-time tags. + +// Streaming Operators +// +// Each civil-time type may be sent to an output stream using operator<<(). +// The result matches the string produced by `FormatCivilTime()`. +// +// Example: +// +// absl::CivilDay d = absl::CivilDay("1969-07-20"); +// std::cout << "Date is: " << d << "\n"; +// +std::ostream& operator<<(std::ostream& os, CivilYear y); +std::ostream& operator<<(std::ostream& os, CivilMonth m); +std::ostream& operator<<(std::ostream& os, CivilDay d); +std::ostream& operator<<(std::ostream& os, CivilHour h); +std::ostream& operator<<(std::ostream& os, CivilMinute m); +std::ostream& operator<<(std::ostream& os, CivilSecond s); + +} // namespace time_internal + +} // namespace absl + +#endif // ABSL_TIME_CIVIL_TIME_H_ diff --git a/absl/time/civil_time_benchmark.cc b/absl/time/civil_time_benchmark.cc new file mode 100644 index 000000000000..567c2a33b12d --- /dev/null +++ b/absl/time/civil_time_benchmark.cc @@ -0,0 +1,57 @@ +// 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 +// +// http://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/time/civil_time.h" + +#include "benchmark/benchmark.h" + +namespace { + +// Benchmark Time(ns) CPU(ns) Iterations +// ------------------------------------------------------------------------- +// BM_Difference_Days 20 20 34542508 +// BM_Step_Days 15 15 48098146 +// BM_Format 688 687 1019803 +// BM_Parse 921 920 762788 +// BM_RoundTripFormatParse 1766 1764 396092 + +void BM_Difference_Days(benchmark::State& state) { + const absl::CivilDay c(2014, 8, 22); + const absl::CivilDay epoch(1970, 1, 1); + while (state.KeepRunning()) { + const absl::civil_diff_t n = c - epoch; + benchmark::DoNotOptimize(n); + } +} +BENCHMARK(BM_Difference_Days); + +void BM_Step_Days(benchmark::State& state) { + const absl::CivilDay kStart(2014, 8, 22); + absl::CivilDay c = kStart; + while (state.KeepRunning()) { + benchmark::DoNotOptimize(++c); + } +} +BENCHMARK(BM_Step_Days); + +void BM_Format(benchmark::State& state) { + const absl::CivilSecond c(2014, 1, 2, 3, 4, 5); + while (state.KeepRunning()) { + const std::string s = absl::FormatCivilTime(c); + benchmark::DoNotOptimize(s); + } +} +BENCHMARK(BM_Format); + +} // namespace diff --git a/absl/time/civil_time_test.cc b/absl/time/civil_time_test.cc new file mode 100644 index 000000000000..dc83d7a9668a --- /dev/null +++ b/absl/time/civil_time_test.cc @@ -0,0 +1,1073 @@ +// 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 +// +// http://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/time/civil_time.h" + +#include <limits> +#include <sstream> +#include <type_traits> + +#include "absl/base/macros.h" +#include "gtest/gtest.h" + +namespace { + +TEST(CivilTime, DefaultConstruction) { + absl::CivilSecond ss; + EXPECT_EQ("1970-01-01T00:00:00", absl::FormatCivilTime(ss)); + + absl::CivilMinute mm; + EXPECT_EQ("1970-01-01T00:00", absl::FormatCivilTime(mm)); + + absl::CivilHour hh; + EXPECT_EQ("1970-01-01T00", absl::FormatCivilTime(hh)); + + absl::CivilDay d; + EXPECT_EQ("1970-01-01", absl::FormatCivilTime(d)); + + absl::CivilMonth m; + EXPECT_EQ("1970-01", absl::FormatCivilTime(m)); + + absl::CivilYear y; + EXPECT_EQ("1970", absl::FormatCivilTime(y)); +} + +TEST(CivilTime, StructMember) { + struct S { + absl::CivilDay day; + }; + S s = {}; + EXPECT_EQ(absl::CivilDay{}, s.day); +} + +TEST(CivilTime, FieldsConstruction) { + EXPECT_EQ("2015-01-02T03:04:05", + absl::FormatCivilTime(absl::CivilSecond(2015, 1, 2, 3, 4, 5))); + EXPECT_EQ("2015-01-02T03:04:00", + absl::FormatCivilTime(absl::CivilSecond(2015, 1, 2, 3, 4))); + EXPECT_EQ("2015-01-02T03:00:00", + absl::FormatCivilTime(absl::CivilSecond(2015, 1, 2, 3))); + EXPECT_EQ("2015-01-02T00:00:00", + absl::FormatCivilTime(absl::CivilSecond(2015, 1, 2))); + EXPECT_EQ("2015-01-01T00:00:00", + absl::FormatCivilTime(absl::CivilSecond(2015, 1))); + EXPECT_EQ("2015-01-01T00:00:00", + absl::FormatCivilTime(absl::CivilSecond(2015))); + + EXPECT_EQ("2015-01-02T03:04", + absl::FormatCivilTime(absl::CivilMinute(2015, 1, 2, 3, 4, 5))); + EXPECT_EQ("2015-01-02T03:04", + absl::FormatCivilTime(absl::CivilMinute(2015, 1, 2, 3, 4))); + EXPECT_EQ("2015-01-02T03:00", + absl::FormatCivilTime(absl::CivilMinute(2015, 1, 2, 3))); + EXPECT_EQ("2015-01-02T00:00", + absl::FormatCivilTime(absl::CivilMinute(2015, 1, 2))); + EXPECT_EQ("2015-01-01T00:00", + absl::FormatCivilTime(absl::CivilMinute(2015, 1))); + EXPECT_EQ("2015-01-01T00:00", + absl::FormatCivilTime(absl::CivilMinute(2015))); + + EXPECT_EQ("2015-01-02T03", + absl::FormatCivilTime(absl::CivilHour(2015, 1, 2, 3, 4, 5))); + EXPECT_EQ("2015-01-02T03", + absl::FormatCivilTime(absl::CivilHour(2015, 1, 2, 3, 4))); + EXPECT_EQ("2015-01-02T03", + absl::FormatCivilTime(absl::CivilHour(2015, 1, 2, 3))); + EXPECT_EQ("2015-01-02T00", + absl::FormatCivilTime(absl::CivilHour(2015, 1, 2))); + EXPECT_EQ("2015-01-01T00", + absl::FormatCivilTime(absl::CivilHour(2015, 1))); + EXPECT_EQ("2015-01-01T00", + absl::FormatCivilTime(absl::CivilHour(2015))); + + EXPECT_EQ("2015-01-02", + absl::FormatCivilTime(absl::CivilDay(2015, 1, 2, 3, 4, 5))); + EXPECT_EQ("2015-01-02", + absl::FormatCivilTime(absl::CivilDay(2015, 1, 2, 3, 4))); + EXPECT_EQ("2015-01-02", + absl::FormatCivilTime(absl::CivilDay(2015, 1, 2, 3))); + EXPECT_EQ("2015-01-02", + absl::FormatCivilTime(absl::CivilDay(2015, 1, 2))); + EXPECT_EQ("2015-01-01", + absl::FormatCivilTime(absl::CivilDay(2015, 1))); + EXPECT_EQ("2015-01-01", + absl::FormatCivilTime(absl::CivilDay(2015))); + + EXPECT_EQ("2015-01", + absl::FormatCivilTime(absl::CivilMonth(2015, 1, 2, 3, 4, 5))); + EXPECT_EQ("2015-01", + absl::FormatCivilTime(absl::CivilMonth(2015, 1, 2, 3, 4))); + EXPECT_EQ("2015-01", + absl::FormatCivilTime(absl::CivilMonth(2015, 1, 2, 3))); + EXPECT_EQ("2015-01", + absl::FormatCivilTime(absl::CivilMonth(2015, 1, 2))); + EXPECT_EQ("2015-01", + absl::FormatCivilTime(absl::CivilMonth(2015, 1))); + EXPECT_EQ("2015-01", + absl::FormatCivilTime(absl::CivilMonth(2015))); + + EXPECT_EQ("2015", + absl::FormatCivilTime(absl::CivilYear(2015, 1, 2, 3, 4, 5))); + EXPECT_EQ("2015", + absl::FormatCivilTime(absl::CivilYear(2015, 1, 2, 3, 4))); + EXPECT_EQ("2015", + absl::FormatCivilTime(absl::CivilYear(2015, 1, 2, 3))); + EXPECT_EQ("2015", + absl::FormatCivilTime(absl::CivilYear(2015, 1, 2))); + EXPECT_EQ("2015", + absl::FormatCivilTime(absl::CivilYear(2015, 1))); + EXPECT_EQ("2015", + absl::FormatCivilTime(absl::CivilYear(2015))); +} + +TEST(CivilTime, FieldsConstructionLimits) { + const int kIntMax = std::numeric_limits<int>::max(); + EXPECT_EQ("2038-01-19T03:14:07", + absl::FormatCivilTime(absl::CivilSecond( + 1970, 1, 1, 0, 0, kIntMax))); + EXPECT_EQ("6121-02-11T05:21:07", + absl::FormatCivilTime(absl::CivilSecond( + 1970, 1, 1, 0, kIntMax, kIntMax))); + EXPECT_EQ("251104-11-20T12:21:07", + absl::FormatCivilTime(absl::CivilSecond( + 1970, 1, 1, kIntMax, kIntMax, kIntMax))); + EXPECT_EQ("6130715-05-30T12:21:07", + absl::FormatCivilTime(absl::CivilSecond( + 1970, 1, kIntMax, kIntMax, kIntMax, kIntMax))); + EXPECT_EQ("185087685-11-26T12:21:07", + absl::FormatCivilTime(absl::CivilSecond( + 1970, kIntMax, kIntMax, kIntMax, kIntMax, kIntMax))); + + const int kIntMin = std::numeric_limits<int>::min(); + EXPECT_EQ("1901-12-13T20:45:52", + absl::FormatCivilTime(absl::CivilSecond( + 1970, 1, 1, 0, 0, kIntMin))); + EXPECT_EQ("-2182-11-20T18:37:52", + absl::FormatCivilTime(absl::CivilSecond( + 1970, 1, 1, 0, kIntMin, kIntMin))); + EXPECT_EQ("-247165-02-11T10:37:52", + absl::FormatCivilTime(absl::CivilSecond( + 1970, 1, 1, kIntMin, kIntMin, kIntMin))); + EXPECT_EQ("-6126776-08-01T10:37:52", + absl::FormatCivilTime(absl::CivilSecond( + 1970, 1, kIntMin, kIntMin, kIntMin, kIntMin))); + EXPECT_EQ("-185083747-10-31T10:37:52", + absl::FormatCivilTime(absl::CivilSecond( + 1970, kIntMin, kIntMin, kIntMin, kIntMin, kIntMin))); +} + +TEST(CivilTime, RangeLimits) { + const absl::civil_year_t kYearMax = + std::numeric_limits<absl::civil_year_t>::max(); + EXPECT_EQ(absl::CivilYear(kYearMax), + absl::CivilYear::max()); + EXPECT_EQ(absl::CivilMonth(kYearMax, 12), + absl::CivilMonth::max()); + EXPECT_EQ(absl::CivilDay(kYearMax, 12, 31), + absl::CivilDay::max()); + EXPECT_EQ(absl::CivilHour(kYearMax, 12, 31, 23), + absl::CivilHour::max()); + EXPECT_EQ(absl::CivilMinute(kYearMax, 12, 31, 23, 59), + absl::CivilMinute::max()); + EXPECT_EQ(absl::CivilSecond(kYearMax, 12, 31, 23, 59, 59), + absl::CivilSecond::max()); + + const absl::civil_year_t kYearMin = + std::numeric_limits<absl::civil_year_t>::min(); + EXPECT_EQ(absl::CivilYear(kYearMin), + absl::CivilYear::min()); + EXPECT_EQ(absl::CivilMonth(kYearMin, 1), + absl::CivilMonth::min()); + EXPECT_EQ(absl::CivilDay(kYearMin, 1, 1), + absl::CivilDay::min()); + EXPECT_EQ(absl::CivilHour(kYearMin, 1, 1, 0), + absl::CivilHour::min()); + EXPECT_EQ(absl::CivilMinute(kYearMin, 1, 1, 0, 0), + absl::CivilMinute::min()); + EXPECT_EQ(absl::CivilSecond(kYearMin, 1, 1, 0, 0, 0), + absl::CivilSecond::min()); +} + +TEST(CivilTime, ImplicitCrossAlignment) { + absl::CivilYear year(2015); + absl::CivilMonth month = year; + absl::CivilDay day = month; + absl::CivilHour hour = day; + absl::CivilMinute minute = hour; + absl::CivilSecond second = minute; + + second = year; + EXPECT_EQ(second, year); + second = month; + EXPECT_EQ(second, month); + second = day; + EXPECT_EQ(second, day); + second = hour; + EXPECT_EQ(second, hour); + second = minute; + EXPECT_EQ(second, minute); + + minute = year; + EXPECT_EQ(minute, year); + minute = month; + EXPECT_EQ(minute, month); + minute = day; + EXPECT_EQ(minute, day); + minute = hour; + EXPECT_EQ(minute, hour); + + hour = year; + EXPECT_EQ(hour, year); + hour = month; + EXPECT_EQ(hour, month); + hour = day; + EXPECT_EQ(hour, day); + + day = year; + EXPECT_EQ(day, year); + day = month; + EXPECT_EQ(day, month); + + month = year; + EXPECT_EQ(month, year); + + // Ensures unsafe conversions are not allowed. + EXPECT_FALSE( + (std::is_convertible<absl::CivilSecond, absl::CivilMinute>::value)); + EXPECT_FALSE( + (std::is_convertible<absl::CivilSecond, absl::CivilHour>::value)); + EXPECT_FALSE( + (std::is_convertible<absl::CivilSecond, absl::CivilDay>::value)); + EXPECT_FALSE( + (std::is_convertible<absl::CivilSecond, absl::CivilMonth>::value)); + EXPECT_FALSE( + (std::is_convertible<absl::CivilSecond, absl::CivilYear>::value)); + + EXPECT_FALSE( + (std::is_convertible<absl::CivilMinute, absl::CivilHour>::value)); + EXPECT_FALSE( + (std::is_convertible<absl::CivilMinute, absl::CivilDay>::value)); + EXPECT_FALSE( + (std::is_convertible<absl::CivilMinute, absl::CivilMonth>::value)); + EXPECT_FALSE( + (std::is_convertible<absl::CivilMinute, absl::CivilYear>::value)); + + EXPECT_FALSE( + (std::is_convertible<absl::CivilHour, absl::CivilDay>::value)); + EXPECT_FALSE( + (std::is_convertible<absl::CivilHour, absl::CivilMonth>::value)); + EXPECT_FALSE( + (std::is_convertible<absl::CivilHour, absl::CivilYear>::value)); + + EXPECT_FALSE( + (std::is_convertible<absl::CivilDay, absl::CivilMonth>::value)); + EXPECT_FALSE( + (std::is_convertible<absl::CivilDay, absl::CivilYear>::value)); + + EXPECT_FALSE( + (std::is_convertible<absl::CivilMonth, absl::CivilYear>::value)); +} + +TEST(CivilTime, ExplicitCrossAlignment) { + // + // Assign from smaller units -> larger units + // + + absl::CivilSecond second(2015, 1, 2, 3, 4, 5); + EXPECT_EQ("2015-01-02T03:04:05", absl::FormatCivilTime(second)); + + absl::CivilMinute minute(second); + EXPECT_EQ("2015-01-02T03:04", absl::FormatCivilTime(minute)); + + absl::CivilHour hour(minute); + EXPECT_EQ("2015-01-02T03", absl::FormatCivilTime(hour)); + + absl::CivilDay day(hour); + EXPECT_EQ("2015-01-02", absl::FormatCivilTime(day)); + + absl::CivilMonth month(day); + EXPECT_EQ("2015-01", absl::FormatCivilTime(month)); + + absl::CivilYear year(month); + EXPECT_EQ("2015", absl::FormatCivilTime(year)); + + // + // Now assign from larger units -> smaller units + // + + month = absl::CivilMonth(year); + EXPECT_EQ("2015-01", absl::FormatCivilTime(month)); + + day = absl::CivilDay(month); + EXPECT_EQ("2015-01-01", absl::FormatCivilTime(day)); + + hour = absl::CivilHour(day); + EXPECT_EQ("2015-01-01T00", absl::FormatCivilTime(hour)); + + minute = absl::CivilMinute(hour); + EXPECT_EQ("2015-01-01T00:00", absl::FormatCivilTime(minute)); + + second = absl::CivilSecond(minute); + EXPECT_EQ("2015-01-01T00:00:00", absl::FormatCivilTime(second)); +} + +// Metafunction to test whether difference is allowed between two types. +template <typename T1, typename T2> +struct HasDiff { + template <typename U1, typename U2> + static std::false_type test(...); + template <typename U1, typename U2> + static std::true_type test(decltype(std::declval<U1>() - std::declval<U2>())); + static constexpr bool value = decltype(test<T1, T2>(0))::value; +}; + +TEST(CivilTime, DisallowCrossAlignedDifference) { + // Difference is allowed between types with the same alignment. + static_assert(HasDiff<absl::CivilSecond, absl::CivilSecond>::value, ""); + static_assert(HasDiff<absl::CivilMinute, absl::CivilMinute>::value, ""); + static_assert(HasDiff<absl::CivilHour, absl::CivilHour>::value, ""); + static_assert(HasDiff<absl::CivilDay, absl::CivilDay>::value, ""); + static_assert(HasDiff<absl::CivilMonth, absl::CivilMonth>::value, ""); + static_assert(HasDiff<absl::CivilYear, absl::CivilYear>::value, ""); + + // Difference is disallowed between types with different alignments. + static_assert(!HasDiff<absl::CivilSecond, absl::CivilMinute>::value, ""); + static_assert(!HasDiff<absl::CivilSecond, absl::CivilHour>::value, ""); + static_assert(!HasDiff<absl::CivilSecond, absl::CivilDay>::value, ""); + static_assert(!HasDiff<absl::CivilSecond, absl::CivilMonth>::value, ""); + static_assert(!HasDiff<absl::CivilSecond, absl::CivilYear>::value, ""); + + static_assert(!HasDiff<absl::CivilMinute, absl::CivilHour>::value, ""); + static_assert(!HasDiff<absl::CivilMinute, absl::CivilDay>::value, ""); + static_assert(!HasDiff<absl::CivilMinute, absl::CivilMonth>::value, ""); + static_assert(!HasDiff<absl::CivilMinute, absl::CivilYear>::value, ""); + + static_assert(!HasDiff<absl::CivilHour, absl::CivilDay>::value, ""); + static_assert(!HasDiff<absl::CivilHour, absl::CivilMonth>::value, ""); + static_assert(!HasDiff<absl::CivilHour, absl::CivilYear>::value, ""); + + static_assert(!HasDiff<absl::CivilDay, absl::CivilMonth>::value, ""); + static_assert(!HasDiff<absl::CivilDay, absl::CivilYear>::value, ""); + + static_assert(!HasDiff<absl::CivilMonth, absl::CivilYear>::value, ""); +} + +TEST(CivilTime, ValueSemantics) { + const absl::CivilHour a(2015, 1, 2, 3); + const absl::CivilHour b = a; + const absl::CivilHour c(b); + absl::CivilHour d; + d = c; + EXPECT_EQ("2015-01-02T03", absl::FormatCivilTime(d)); +} + +TEST(CivilTime, Relational) { + // Tests that the alignment unit is ignored in comparison. + const absl::CivilYear year(2014); + const absl::CivilMonth month(year); + EXPECT_EQ(year, month); + +#define TEST_RELATIONAL(OLDER, YOUNGER) \ + do { \ + EXPECT_FALSE(OLDER < OLDER); \ + EXPECT_FALSE(OLDER > OLDER); \ + EXPECT_TRUE(OLDER >= OLDER); \ + EXPECT_TRUE(OLDER <= OLDER); \ + EXPECT_FALSE(YOUNGER < YOUNGER); \ + EXPECT_FALSE(YOUNGER > YOUNGER); \ + EXPECT_TRUE(YOUNGER >= YOUNGER); \ + EXPECT_TRUE(YOUNGER <= YOUNGER); \ + EXPECT_EQ(OLDER, OLDER); \ + EXPECT_NE(OLDER, YOUNGER); \ + EXPECT_LT(OLDER, YOUNGER); \ + EXPECT_LE(OLDER, YOUNGER); \ + EXPECT_GT(YOUNGER, OLDER); \ + EXPECT_GE(YOUNGER, OLDER); \ + } while (0) + + // Alignment is ignored in comparison (verified above), so CivilSecond is + // used to test comparison in all field positions. + TEST_RELATIONAL(absl::CivilSecond(2014, 1, 1, 0, 0, 0), + absl::CivilSecond(2015, 1, 1, 0, 0, 0)); + TEST_RELATIONAL(absl::CivilSecond(2014, 1, 1, 0, 0, 0), + absl::CivilSecond(2014, 2, 1, 0, 0, 0)); + TEST_RELATIONAL(absl::CivilSecond(2014, 1, 1, 0, 0, 0), + absl::CivilSecond(2014, 1, 2, 0, 0, 0)); + TEST_RELATIONAL(absl::CivilSecond(2014, 1, 1, 0, 0, 0), + absl::CivilSecond(2014, 1, 1, 1, 0, 0)); + TEST_RELATIONAL(absl::CivilSecond(2014, 1, 1, 1, 0, 0), + absl::CivilSecond(2014, 1, 1, 1, 1, 0)); + TEST_RELATIONAL(absl::CivilSecond(2014, 1, 1, 1, 1, 0), + absl::CivilSecond(2014, 1, 1, 1, 1, 1)); + + // Tests the relational operators of two different civil-time types. + TEST_RELATIONAL(absl::CivilDay(2014, 1, 1), + absl::CivilMinute(2014, 1, 1, 1, 1)); + TEST_RELATIONAL(absl::CivilDay(2014, 1, 1), + absl::CivilMonth(2014, 2)); + +#undef TEST_RELATIONAL +} + +TEST(CivilTime, Arithmetic) { + absl::CivilSecond second(2015, 1, 2, 3, 4, 5); + EXPECT_EQ("2015-01-02T03:04:06", absl::FormatCivilTime(second += 1)); + EXPECT_EQ("2015-01-02T03:04:07", absl::FormatCivilTime(second + 1)); + EXPECT_EQ("2015-01-02T03:04:08", absl::FormatCivilTime(2 + second)); + EXPECT_EQ("2015-01-02T03:04:05", absl::FormatCivilTime(second - 1)); + EXPECT_EQ("2015-01-02T03:04:05", absl::FormatCivilTime(second -= 1)); + EXPECT_EQ("2015-01-02T03:04:05", absl::FormatCivilTime(second++)); + EXPECT_EQ("2015-01-02T03:04:07", absl::FormatCivilTime(++second)); + EXPECT_EQ("2015-01-02T03:04:07", absl::FormatCivilTime(second--)); + EXPECT_EQ("2015-01-02T03:04:05", absl::FormatCivilTime(--second)); + + absl::CivilMinute minute(2015, 1, 2, 3, 4); + EXPECT_EQ("2015-01-02T03:05", absl::FormatCivilTime(minute += 1)); + EXPECT_EQ("2015-01-02T03:06", absl::FormatCivilTime(minute + 1)); + EXPECT_EQ("2015-01-02T03:07", absl::FormatCivilTime(2 + minute)); + EXPECT_EQ("2015-01-02T03:04", absl::FormatCivilTime(minute - 1)); + EXPECT_EQ("2015-01-02T03:04", absl::FormatCivilTime(minute -= 1)); + EXPECT_EQ("2015-01-02T03:04", absl::FormatCivilTime(minute++)); + EXPECT_EQ("2015-01-02T03:06", absl::FormatCivilTime(++minute)); + EXPECT_EQ("2015-01-02T03:06", absl::FormatCivilTime(minute--)); + EXPECT_EQ("2015-01-02T03:04", absl::FormatCivilTime(--minute)); + + absl::CivilHour hour(2015, 1, 2, 3); + EXPECT_EQ("2015-01-02T04", absl::FormatCivilTime(hour += 1)); + EXPECT_EQ("2015-01-02T05", absl::FormatCivilTime(hour + 1)); + EXPECT_EQ("2015-01-02T06", absl::FormatCivilTime(2 + hour)); + EXPECT_EQ("2015-01-02T03", absl::FormatCivilTime(hour - 1)); + EXPECT_EQ("2015-01-02T03", absl::FormatCivilTime(hour -= 1)); + EXPECT_EQ("2015-01-02T03", absl::FormatCivilTime(hour++)); + EXPECT_EQ("2015-01-02T05", absl::FormatCivilTime(++hour)); + EXPECT_EQ("2015-01-02T05", absl::FormatCivilTime(hour--)); + EXPECT_EQ("2015-01-02T03", absl::FormatCivilTime(--hour)); + + absl::CivilDay day(2015, 1, 2); + EXPECT_EQ("2015-01-03", absl::FormatCivilTime(day += 1)); + EXPECT_EQ("2015-01-04", absl::FormatCivilTime(day + 1)); + EXPECT_EQ("2015-01-05", absl::FormatCivilTime(2 + day)); + EXPECT_EQ("2015-01-02", absl::FormatCivilTime(day - 1)); + EXPECT_EQ("2015-01-02", absl::FormatCivilTime(day -= 1)); + EXPECT_EQ("2015-01-02", absl::FormatCivilTime(day++)); + EXPECT_EQ("2015-01-04", absl::FormatCivilTime(++day)); + EXPECT_EQ("2015-01-04", absl::FormatCivilTime(day--)); + EXPECT_EQ("2015-01-02", absl::FormatCivilTime(--day)); + + absl::CivilMonth month(2015, 1); + EXPECT_EQ("2015-02", absl::FormatCivilTime(month += 1)); + EXPECT_EQ("2015-03", absl::FormatCivilTime(month + 1)); + EXPECT_EQ("2015-04", absl::FormatCivilTime(2 + month)); + EXPECT_EQ("2015-01", absl::FormatCivilTime(month - 1)); + EXPECT_EQ("2015-01", absl::FormatCivilTime(month -= 1)); + EXPECT_EQ("2015-01", absl::FormatCivilTime(month++)); + EXPECT_EQ("2015-03", absl::FormatCivilTime(++month)); + EXPECT_EQ("2015-03", absl::FormatCivilTime(month--)); + EXPECT_EQ("2015-01", absl::FormatCivilTime(--month)); + + absl::CivilYear year(2015); + EXPECT_EQ("2016", absl::FormatCivilTime(year += 1)); + EXPECT_EQ("2017", absl::FormatCivilTime(year + 1)); + EXPECT_EQ("2018", absl::FormatCivilTime(2 + year)); + EXPECT_EQ("2015", absl::FormatCivilTime(year - 1)); + EXPECT_EQ("2015", absl::FormatCivilTime(year -= 1)); + EXPECT_EQ("2015", absl::FormatCivilTime(year++)); + EXPECT_EQ("2017", absl::FormatCivilTime(++year)); + EXPECT_EQ("2017", absl::FormatCivilTime(year--)); + EXPECT_EQ("2015", absl::FormatCivilTime(--year)); +} + +TEST(CivilTime, ArithmeticLimits) { + const int kIntMax = std::numeric_limits<int>::max(); + const int kIntMin = std::numeric_limits<int>::min(); + + absl::CivilSecond second(1970, 1, 1, 0, 0, 0); + second += kIntMax; + EXPECT_EQ("2038-01-19T03:14:07", absl::FormatCivilTime(second)); + second -= kIntMax; + EXPECT_EQ("1970-01-01T00:00:00", absl::FormatCivilTime(second)); + second += kIntMin; + EXPECT_EQ("1901-12-13T20:45:52", absl::FormatCivilTime(second)); + second -= kIntMin; + EXPECT_EQ("1970-01-01T00:00:00", absl::FormatCivilTime(second)); + + absl::CivilMinute minute(1970, 1, 1, 0, 0); + minute += kIntMax; + EXPECT_EQ("6053-01-23T02:07", absl::FormatCivilTime(minute)); + minute -= kIntMax; + EXPECT_EQ("1970-01-01T00:00", absl::FormatCivilTime(minute)); + minute += kIntMin; + EXPECT_EQ("-2114-12-08T21:52", absl::FormatCivilTime(minute)); + minute -= kIntMin; + EXPECT_EQ("1970-01-01T00:00", absl::FormatCivilTime(minute)); + + absl::CivilHour hour(1970, 1, 1, 0); + hour += kIntMax; + EXPECT_EQ("246953-10-09T07", absl::FormatCivilTime(hour)); + hour -= kIntMax; + EXPECT_EQ("1970-01-01T00", absl::FormatCivilTime(hour)); + hour += kIntMin; + EXPECT_EQ("-243014-03-24T16", absl::FormatCivilTime(hour)); + hour -= kIntMin; + EXPECT_EQ("1970-01-01T00", absl::FormatCivilTime(hour)); + + absl::CivilDay day(1970, 1, 1); + day += kIntMax; + EXPECT_EQ("5881580-07-11", absl::FormatCivilTime(day)); + day -= kIntMax; + EXPECT_EQ("1970-01-01", absl::FormatCivilTime(day)); + day += kIntMin; + EXPECT_EQ("-5877641-06-23", absl::FormatCivilTime(day)); + day -= kIntMin; + EXPECT_EQ("1970-01-01", absl::FormatCivilTime(day)); + + absl::CivilMonth month(1970, 1); + month += kIntMax; + EXPECT_EQ("178958940-08", absl::FormatCivilTime(month)); + month -= kIntMax; + EXPECT_EQ("1970-01", absl::FormatCivilTime(month)); + month += kIntMin; + EXPECT_EQ("-178955001-05", absl::FormatCivilTime(month)); + month -= kIntMin; + EXPECT_EQ("1970-01", absl::FormatCivilTime(month)); + + absl::CivilYear year(0); + year += kIntMax; + EXPECT_EQ("2147483647", absl::FormatCivilTime(year)); + year -= kIntMax; + EXPECT_EQ("0", absl::FormatCivilTime(year)); + year += kIntMin; + EXPECT_EQ("-2147483648", absl::FormatCivilTime(year)); + year -= kIntMin; + EXPECT_EQ("0", absl::FormatCivilTime(year)); +} + +TEST(CivilTime, Difference) { + absl::CivilSecond second(2015, 1, 2, 3, 4, 5); + EXPECT_EQ(0, second - second); + EXPECT_EQ(10, (second + 10) - second); + EXPECT_EQ(-10, (second - 10) - second); + + absl::CivilMinute minute(2015, 1, 2, 3, 4); + EXPECT_EQ(0, minute - minute); + EXPECT_EQ(10, (minute + 10) - minute); + EXPECT_EQ(-10, (minute - 10) - minute); + + absl::CivilHour hour(2015, 1, 2, 3); + EXPECT_EQ(0, hour - hour); + EXPECT_EQ(10, (hour + 10) - hour); + EXPECT_EQ(-10, (hour - 10) - hour); + + absl::CivilDay day(2015, 1, 2); + EXPECT_EQ(0, day - day); + EXPECT_EQ(10, (day + 10) - day); + EXPECT_EQ(-10, (day - 10) - day); + + absl::CivilMonth month(2015, 1); + EXPECT_EQ(0, month - month); + EXPECT_EQ(10, (month + 10) - month); + EXPECT_EQ(-10, (month - 10) - month); + + absl::CivilYear year(2015); + EXPECT_EQ(0, year - year); + EXPECT_EQ(10, (year + 10) - year); + EXPECT_EQ(-10, (year - 10) - year); +} + +TEST(CivilTime, DifferenceLimits) { + const absl::civil_diff_t kDiffMax = + std::numeric_limits<absl::civil_diff_t>::max(); + const absl::civil_diff_t kDiffMin = + std::numeric_limits<absl::civil_diff_t>::min(); + + // Check day arithmetic at the end of the year range. + const absl::CivilDay max_day(kDiffMax, 12, 31); + EXPECT_EQ(1, max_day - (max_day - 1)); + EXPECT_EQ(-1, (max_day - 1) - max_day); + + // Check day arithmetic at the start of the year range. + const absl::CivilDay min_day(kDiffMin, 1, 1); + EXPECT_EQ(1, (min_day + 1) - min_day); + EXPECT_EQ(-1, min_day - (min_day + 1)); + + // Check the limits of the return value. + const absl::CivilDay d1(1970, 1, 1); + const absl::CivilDay d2(25252734927768524, 7, 27); + EXPECT_EQ(kDiffMax, d2 - d1); + EXPECT_EQ(kDiffMin, d1 - (d2 + 1)); +} + +TEST(CivilTime, Properties) { + absl::CivilSecond ss(2015, 2, 3, 4, 5, 6); + EXPECT_EQ(2015, ss.year()); + EXPECT_EQ(2, ss.month()); + EXPECT_EQ(3, ss.day()); + EXPECT_EQ(4, ss.hour()); + EXPECT_EQ(5, ss.minute()); + EXPECT_EQ(6, ss.second()); + + absl::CivilMinute mm(2015, 2, 3, 4, 5, 6); + EXPECT_EQ(2015, mm.year()); + EXPECT_EQ(2, mm.month()); + EXPECT_EQ(3, mm.day()); + EXPECT_EQ(4, mm.hour()); + EXPECT_EQ(5, mm.minute()); + EXPECT_EQ(0, mm.second()); + + absl::CivilHour hh(2015, 2, 3, 4, 5, 6); + EXPECT_EQ(2015, hh.year()); + EXPECT_EQ(2, hh.month()); + EXPECT_EQ(3, hh.day()); + EXPECT_EQ(4, hh.hour()); + EXPECT_EQ(0, hh.minute()); + EXPECT_EQ(0, hh.second()); + + absl::CivilDay d(2015, 2, 3, 4, 5, 6); + EXPECT_EQ(2015, d.year()); + EXPECT_EQ(2, d.month()); + EXPECT_EQ(3, d.day()); + EXPECT_EQ(0, d.hour()); + EXPECT_EQ(0, d.minute()); + EXPECT_EQ(0, d.second()); + + absl::CivilMonth m(2015, 2, 3, 4, 5, 6); + EXPECT_EQ(2015, m.year()); + EXPECT_EQ(2, m.month()); + EXPECT_EQ(1, m.day()); + EXPECT_EQ(0, m.hour()); + EXPECT_EQ(0, m.minute()); + EXPECT_EQ(0, m.second()); + + absl::CivilYear y(2015, 2, 3, 4, 5, 6); + EXPECT_EQ(2015, y.year()); + EXPECT_EQ(1, y.month()); + EXPECT_EQ(1, y.day()); + EXPECT_EQ(0, y.hour()); + EXPECT_EQ(0, y.minute()); + EXPECT_EQ(0, y.second()); +} + +TEST(CivilTime, Format) { + absl::CivilSecond ss; + EXPECT_EQ("1970-01-01T00:00:00", absl::FormatCivilTime(ss)); + + absl::CivilMinute mm; + EXPECT_EQ("1970-01-01T00:00", absl::FormatCivilTime(mm)); + + absl::CivilHour hh; + EXPECT_EQ("1970-01-01T00", absl::FormatCivilTime(hh)); + + absl::CivilDay d; + EXPECT_EQ("1970-01-01", absl::FormatCivilTime(d)); + + absl::CivilMonth m; + EXPECT_EQ("1970-01", absl::FormatCivilTime(m)); + + absl::CivilYear y; + EXPECT_EQ("1970", absl::FormatCivilTime(y)); +} + +TEST(CivilTime, FormatAndParseLenient) { + absl::CivilSecond ss; + EXPECT_EQ("1970-01-01T00:00:00", absl::FormatCivilTime(ss)); + + absl::CivilMinute mm; + EXPECT_EQ("1970-01-01T00:00", absl::FormatCivilTime(mm)); + + absl::CivilHour hh; + EXPECT_EQ("1970-01-01T00", absl::FormatCivilTime(hh)); + + absl::CivilDay d; + EXPECT_EQ("1970-01-01", absl::FormatCivilTime(d)); + + absl::CivilMonth m; + EXPECT_EQ("1970-01", absl::FormatCivilTime(m)); + + absl::CivilYear y; + EXPECT_EQ("1970", absl::FormatCivilTime(y)); +} + +TEST(CivilTime, OutputStream) { + absl::CivilSecond cs(2016, 2, 3, 4, 5, 6); + { + std::stringstream ss; + ss << std::left << std::setfill('.'); + ss << std::setw(3) << 'X'; + ss << std::setw(21) << absl::CivilYear(cs); + ss << std::setw(3) << 'X'; + EXPECT_EQ("X..2016.................X..", ss.str()); + } + { + std::stringstream ss; + ss << std::left << std::setfill('.'); + ss << std::setw(3) << 'X'; + ss << std::setw(21) << absl::CivilMonth(cs); + ss << std::setw(3) << 'X'; + EXPECT_EQ("X..2016-02..............X..", ss.str()); + } + { + std::stringstream ss; + ss << std::left << std::setfill('.'); + ss << std::setw(3) << 'X'; + ss << std::setw(21) << absl::CivilDay(cs); + ss << std::setw(3) << 'X'; + EXPECT_EQ("X..2016-02-03...........X..", ss.str()); + } + { + std::stringstream ss; + ss << std::left << std::setfill('.'); + ss << std::setw(3) << 'X'; + ss << std::setw(21) << absl::CivilHour(cs); + ss << std::setw(3) << 'X'; + EXPECT_EQ("X..2016-02-03T04........X..", ss.str()); + } + { + std::stringstream ss; + ss << std::left << std::setfill('.'); + ss << std::setw(3) << 'X'; + ss << std::setw(21) << absl::CivilMinute(cs); + ss << std::setw(3) << 'X'; + EXPECT_EQ("X..2016-02-03T04:05.....X..", ss.str()); + } + { + std::stringstream ss; + ss << std::left << std::setfill('.'); + ss << std::setw(3) << 'X'; + ss << std::setw(21) << absl::CivilSecond(cs); + ss << std::setw(3) << 'X'; + EXPECT_EQ("X..2016-02-03T04:05:06..X..", ss.str()); + } + { + std::stringstream ss; + ss << std::left << std::setfill('.'); + ss << std::setw(3) << 'X'; + ss << std::setw(21) << absl::Weekday::wednesday; + ss << std::setw(3) << 'X'; + EXPECT_EQ("X..Wednesday............X..", ss.str()); + } +} + +TEST(CivilTime, Weekday) { + absl::CivilDay d(1970, 1, 1); + EXPECT_EQ(absl::Weekday::thursday, absl::GetWeekday(d)) << d; + + // We used to get this wrong for years < -30. + d = absl::CivilDay(-31, 12, 24); + EXPECT_EQ(absl::Weekday::wednesday, absl::GetWeekday(d)) << d; +} + +TEST(CivilTime, NextPrevWeekday) { + // Jan 1, 1970 was a Thursday. + const absl::CivilDay thursday(1970, 1, 1); + + // Thursday -> Thursday + absl::CivilDay d = absl::NextWeekday(thursday, absl::Weekday::thursday); + EXPECT_EQ(7, d - thursday) << d; + EXPECT_EQ(d - 14, absl::PrevWeekday(thursday, absl::Weekday::thursday)); + + // Thursday -> Friday + d = absl::NextWeekday(thursday, absl::Weekday::friday); + EXPECT_EQ(1, d - thursday) << d; + EXPECT_EQ(d - 7, absl::PrevWeekday(thursday, absl::Weekday::friday)); + + // Thursday -> Saturday + d = absl::NextWeekday(thursday, absl::Weekday::saturday); + EXPECT_EQ(2, d - thursday) << d; + EXPECT_EQ(d - 7, absl::PrevWeekday(thursday, absl::Weekday::saturday)); + + // Thursday -> Sunday + d = absl::NextWeekday(thursday, absl::Weekday::sunday); + EXPECT_EQ(3, d - thursday) << d; + EXPECT_EQ(d - 7, absl::PrevWeekday(thursday, absl::Weekday::sunday)); + + // Thursday -> Monday + d = absl::NextWeekday(thursday, absl::Weekday::monday); + EXPECT_EQ(4, d - thursday) << d; + EXPECT_EQ(d - 7, absl::PrevWeekday(thursday, absl::Weekday::monday)); + + // Thursday -> Tuesday + d = absl::NextWeekday(thursday, absl::Weekday::tuesday); + EXPECT_EQ(5, d - thursday) << d; + EXPECT_EQ(d - 7, absl::PrevWeekday(thursday, absl::Weekday::tuesday)); + + // Thursday -> Wednesday + d = absl::NextWeekday(thursday, absl::Weekday::wednesday); + EXPECT_EQ(6, d - thursday) << d; + EXPECT_EQ(d - 7, absl::PrevWeekday(thursday, absl::Weekday::wednesday)); +} + +// NOTE: Run this with --copt=-ftrapv to detect overflow problems. +TEST(CivilTime, DifferenceWithHugeYear) { + absl::CivilDay d1(9223372036854775807, 1, 1); + absl::CivilDay d2(9223372036854775807, 12, 31); + EXPECT_EQ(364, d2 - d1); + + d1 = absl::CivilDay(-9223372036854775807 - 1, 1, 1); + d2 = absl::CivilDay(-9223372036854775807 - 1, 12, 31); + EXPECT_EQ(365, d2 - d1); + + // Check the limits of the return value at the end of the year range. + d1 = absl::CivilDay(9223372036854775807, 1, 1); + d2 = absl::CivilDay(9198119301927009252, 6, 6); + EXPECT_EQ(9223372036854775807, d1 - d2); + d2 = d2 - 1; + EXPECT_EQ(-9223372036854775807 - 1, d2 - d1); + + // Check the limits of the return value at the start of the year range. + d1 = absl::CivilDay(-9223372036854775807 - 1, 1, 1); + d2 = absl::CivilDay(-9198119301927009254, 7, 28); + EXPECT_EQ(9223372036854775807, d2 - d1); + d2 = d2 + 1; + EXPECT_EQ(-9223372036854775807 - 1, d1 - d2); + + // Check the limits of the return value from either side of year 0. + d1 = absl::CivilDay(-12626367463883278, 9, 3); + d2 = absl::CivilDay(12626367463883277, 3, 28); + EXPECT_EQ(9223372036854775807, d2 - d1); + d2 = d2 + 1; + EXPECT_EQ(-9223372036854775807 - 1, d1 - d2); +} + +// NOTE: Run this with --copt=-ftrapv to detect overflow problems. +TEST(CivilTime, DifferenceNoIntermediateOverflow) { + // The difference up to the minute field would be below the minimum + // int64_t, but the 52 extra seconds brings us back to the minimum. + absl::CivilSecond s1(-292277022657, 1, 27, 8, 29 - 1, 52); + absl::CivilSecond s2(1970, 1, 1, 0, 0 - 1, 0); + EXPECT_EQ(-9223372036854775807 - 1, s1 - s2); + + // The difference up to the minute field would be above the maximum + // int64_t, but the -53 extra seconds brings us back to the maximum. + s1 = absl::CivilSecond(292277026596, 12, 4, 15, 30, 7 - 7); + s2 = absl::CivilSecond(1970, 1, 1, 0, 0, 0 - 7); + EXPECT_EQ(9223372036854775807, s1 - s2); +} + +TEST(CivilTime, NormalizeSimpleOverflow) { + absl::CivilSecond cs; + cs = absl::CivilSecond(2013, 11, 15, 16, 32, 59 + 1); + EXPECT_EQ("2013-11-15T16:33:00", absl::FormatCivilTime(cs)); + cs = absl::CivilSecond(2013, 11, 15, 16, 59 + 1, 14); + EXPECT_EQ("2013-11-15T17:00:14", absl::FormatCivilTime(cs)); + cs = absl::CivilSecond(2013, 11, 15, 23 + 1, 32, 14); + EXPECT_EQ("2013-11-16T00:32:14", absl::FormatCivilTime(cs)); + cs = absl::CivilSecond(2013, 11, 30 + 1, 16, 32, 14); + EXPECT_EQ("2013-12-01T16:32:14", absl::FormatCivilTime(cs)); + cs = absl::CivilSecond(2013, 12 + 1, 15, 16, 32, 14); + EXPECT_EQ("2014-01-15T16:32:14", absl::FormatCivilTime(cs)); +} + +TEST(CivilTime, NormalizeSimpleUnderflow) { + absl::CivilSecond cs; + cs = absl::CivilSecond(2013, 11, 15, 16, 32, 0 - 1); + EXPECT_EQ("2013-11-15T16:31:59", absl::FormatCivilTime(cs)); + cs = absl::CivilSecond(2013, 11, 15, 16, 0 - 1, 14); + EXPECT_EQ("2013-11-15T15:59:14", absl::FormatCivilTime(cs)); + cs = absl::CivilSecond(2013, 11, 15, 0 - 1, 32, 14); + EXPECT_EQ("2013-11-14T23:32:14", absl::FormatCivilTime(cs)); + cs = absl::CivilSecond(2013, 11, 1 - 1, 16, 32, 14); + EXPECT_EQ("2013-10-31T16:32:14", absl::FormatCivilTime(cs)); + cs = absl::CivilSecond(2013, 1 - 1, 15, 16, 32, 14); + EXPECT_EQ("2012-12-15T16:32:14", absl::FormatCivilTime(cs)); +} + +TEST(CivilTime, NormalizeMultipleOverflow) { + absl::CivilSecond cs(2013, 12, 31, 23, 59, 59 + 1); + EXPECT_EQ("2014-01-01T00:00:00", absl::FormatCivilTime(cs)); +} + +TEST(CivilTime, NormalizeMultipleUnderflow) { + absl::CivilSecond cs(2014, 1, 1, 0, 0, 0 - 1); + EXPECT_EQ("2013-12-31T23:59:59", absl::FormatCivilTime(cs)); +} + +TEST(CivilTime, NormalizeOverflowLimits) { + absl::CivilSecond cs; + + const int kintmax = std::numeric_limits<int>::max(); + cs = absl::CivilSecond(0, kintmax, kintmax, kintmax, kintmax, kintmax); + EXPECT_EQ("185085715-11-27T12:21:07", absl::FormatCivilTime(cs)); + + const int kintmin = std::numeric_limits<int>::min(); + cs = absl::CivilSecond(0, kintmin, kintmin, kintmin, kintmin, kintmin); + EXPECT_EQ("-185085717-10-31T10:37:52", absl::FormatCivilTime(cs)); +} + +TEST(CivilTime, NormalizeComplexOverflow) { + absl::CivilSecond cs; + cs = absl::CivilSecond(2013, 11, 15, 16, 32, 14 + 123456789); + EXPECT_EQ("2017-10-14T14:05:23", absl::FormatCivilTime(cs)); + cs = absl::CivilSecond(2013, 11, 15, 16, 32 + 1234567, 14); + EXPECT_EQ("2016-03-22T00:39:14", absl::FormatCivilTime(cs)); + cs = absl::CivilSecond(2013, 11, 15, 16 + 123456, 32, 14); + EXPECT_EQ("2027-12-16T16:32:14", absl::FormatCivilTime(cs)); + cs = absl::CivilSecond(2013, 11, 15 + 1234, 16, 32, 14); + EXPECT_EQ("2017-04-02T16:32:14", absl::FormatCivilTime(cs)); + cs = absl::CivilSecond(2013, 11 + 123, 15, 16, 32, 14); + EXPECT_EQ("2024-02-15T16:32:14", absl::FormatCivilTime(cs)); +} + +TEST(CivilTime, NormalizeComplexUnderflow) { + absl::CivilSecond cs; + cs = absl::CivilSecond(1999, 3, 0, 0, 0, 0); // year 400 + EXPECT_EQ("1999-02-28T00:00:00", absl::FormatCivilTime(cs)); + cs = absl::CivilSecond(2013, 11, 15, 16, 32, 14 - 123456789); + EXPECT_EQ("2009-12-17T18:59:05", absl::FormatCivilTime(cs)); + cs = absl::CivilSecond(2013, 11, 15, 16, 32 - 1234567, 14); + EXPECT_EQ("2011-07-12T08:25:14", absl::FormatCivilTime(cs)); + cs = absl::CivilSecond(2013, 11, 15, 16 - 123456, 32, 14); + EXPECT_EQ("1999-10-16T16:32:14", absl::FormatCivilTime(cs)); + cs = absl::CivilSecond(2013, 11, 15 - 1234, 16, 32, 14); + EXPECT_EQ("2010-06-30T16:32:14", absl::FormatCivilTime(cs)); + cs = absl::CivilSecond(2013, 11 - 123, 15, 16, 32, 14); + EXPECT_EQ("2003-08-15T16:32:14", absl::FormatCivilTime(cs)); +} + +TEST(CivilTime, NormalizeMishmash) { + absl::CivilSecond cs; + cs = absl::CivilSecond(2013, 11 - 123, 15 + 1234, 16 - 123456, 32 + 1234567, + 14 - 123456789); + EXPECT_EQ("1991-05-09T03:06:05", absl::FormatCivilTime(cs)); + cs = absl::CivilSecond(2013, 11 + 123, 15 - 1234, 16 + 123456, 32 - 1234567, + 14 + 123456789); + EXPECT_EQ("2036-05-24T05:58:23", absl::FormatCivilTime(cs)); + + cs = absl::CivilSecond(2013, 11, -146097 + 1, 16, 32, 14); + EXPECT_EQ("1613-11-01T16:32:14", absl::FormatCivilTime(cs)); + cs = absl::CivilSecond(2013, 11 + 400 * 12, -146097 + 1, 16, 32, 14); + EXPECT_EQ("2013-11-01T16:32:14", absl::FormatCivilTime(cs)); +} + +// Convert all the days from 1970-1-1 to 1970-1-146097 (aka 2369-12-31) +// and check that they normalize to the expected time. 146097 days span +// the 400-year Gregorian cycle used during normalization. +TEST(CivilTime, NormalizeAllTheDays) { + absl::CivilDay expected(1970, 1, 1); + for (int day = 1; day <= 146097; ++day) { + absl::CivilSecond cs(1970, 1, day, 0, 0, 0); + EXPECT_EQ(expected, cs); + ++expected; + } +} + +TEST(CivilTime, NormalizeWithHugeYear) { + absl::CivilMonth c(9223372036854775807, 1); + EXPECT_EQ("9223372036854775807-01", absl::FormatCivilTime(c)); + c = c - 1; // Causes normalization + EXPECT_EQ("9223372036854775806-12", absl::FormatCivilTime(c)); + + c = absl::CivilMonth(-9223372036854775807 - 1, 1); + EXPECT_EQ("-9223372036854775808-01", absl::FormatCivilTime(c)); + c = c + 12; // Causes normalization + EXPECT_EQ("-9223372036854775807-01", absl::FormatCivilTime(c)); +} + +TEST(CivilTime, LeapYears) { + const absl::CivilSecond s1(2013, 2, 28 + 1, 0, 0, 0); + EXPECT_EQ("2013-03-01T00:00:00", absl::FormatCivilTime(s1)); + + const absl::CivilSecond s2(2012, 2, 28 + 1, 0, 0, 0); + EXPECT_EQ("2012-02-29T00:00:00", absl::FormatCivilTime(s2)); + + const absl::CivilSecond s3(1900, 2, 28 + 1, 0, 0, 0); + EXPECT_EQ("1900-03-01T00:00:00", absl::FormatCivilTime(s3)); + + const struct { + int year; + int days; + struct { + int month; + int day; + } leap_day; // The date of the day after Feb 28. + } kLeapYearTable[]{ + {1900, 365, {3, 1}}, + {1999, 365, {3, 1}}, + {2000, 366, {2, 29}}, // leap year + {2001, 365, {3, 1}}, + {2002, 365, {3, 1}}, + {2003, 365, {3, 1}}, + {2004, 366, {2, 29}}, // leap year + {2005, 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 (int i = 0; i < ABSL_ARRAYSIZE(kLeapYearTable); ++i) { + const int y = kLeapYearTable[i].year; + const int m = kLeapYearTable[i].leap_day.month; + const int d = kLeapYearTable[i].leap_day.day; + const int n = kLeapYearTable[i].days; + + // Tests incrementing through the leap day. + const absl::CivilDay feb28(y, 2, 28); + const absl::CivilDay next_day = feb28 + 1; + EXPECT_EQ(m, next_day.month()); + EXPECT_EQ(d, next_day.day()); + + // Tests difference in days of leap years. + const absl::CivilYear year(feb28); + const absl::CivilYear next_year = year + 1; + EXPECT_EQ(n, absl::CivilDay(next_year) - absl::CivilDay(year)); + } +} + +TEST(CivilTime, FirstThursdayInMonth) { + const absl::CivilDay nov1(2014, 11, 1); + const absl::CivilDay thursday = + absl::PrevWeekday(nov1, absl::Weekday::thursday) + 7; + EXPECT_EQ("2014-11-06", absl::FormatCivilTime(thursday)); + + // Bonus: Date of Thanksgiving in the United States + // Rule: Fourth Thursday of November + const absl::CivilDay thanksgiving = thursday + 7 * 3; + EXPECT_EQ("2014-11-27", absl::FormatCivilTime(thanksgiving)); +} + +TEST(CivilTime, DocumentationExample) { + absl::CivilSecond second(2015, 6, 28, 1, 2, 3); // 2015-06-28 01:02:03 + absl::CivilMinute minute(second); // 2015-06-28 01:02:00 + absl::CivilDay day(minute); // 2015-06-28 00:00:00 + + second -= 1; // 2015-06-28 01:02:02 + --second; // 2015-06-28 01:02:01 + EXPECT_EQ(minute, second - 1); // Comparison between types + EXPECT_LT(minute, second); + + // int diff = second - minute; // ERROR: Mixed types, won't compile + + absl::CivilDay june_1(2015, 6, 1); // Pass fields to c'tor. + int diff = day - june_1; // Num days between 'day' and June 1 + EXPECT_EQ(27, diff); + + // Fields smaller than alignment are floored to their minimum value. + absl::CivilDay day_floor(2015, 1, 2, 9, 9, 9); + EXPECT_EQ(0, day_floor.hour()); // 09:09:09 is floored + EXPECT_EQ(absl::CivilDay(2015, 1, 2), day_floor); + + // Unspecified fields default to their minium value + absl::CivilDay day_default(2015); // Defaults to Jan 1 + EXPECT_EQ(absl::CivilDay(2015, 1, 1), day_default); + + // Iterates all the days of June. + absl::CivilMonth june(day); // CivilDay -> CivilMonth + absl::CivilMonth july = june + 1; + for (absl::CivilDay day = june_1; day < july; ++day) { + // ... + } +} + +} // namespace diff --git a/absl/time/format_benchmark.cc b/absl/time/format_benchmark.cc index ee53d71c6854..766f1b39a55b 100644 --- a/absl/time/format_benchmark.cc +++ b/absl/time/format_benchmark.cc @@ -38,7 +38,8 @@ void BM_Format_FormatTime(benchmark::State& state) { const absl::TimeZone lax = absl::time_internal::LoadTimeZone("America/Los_Angeles"); const absl::Time t = - absl::FromDateTime(1977, 6, 28, 9, 8, 7, lax) + absl::Nanoseconds(1); + absl::FromCivil(absl::CivilSecond(1977, 6, 28, 9, 8, 7), lax) + + absl::Nanoseconds(1); while (state.KeepRunning()) { benchmark::DoNotOptimize(absl::FormatTime(fmt, t, lax).length()); } @@ -50,8 +51,8 @@ void BM_Format_ParseTime(benchmark::State& state) { state.SetLabel(fmt); const absl::TimeZone lax = absl::time_internal::LoadTimeZone("America/Los_Angeles"); - absl::Time t = - absl::FromDateTime(1977, 6, 28, 9, 8, 7, lax) + absl::Nanoseconds(1); + absl::Time t = absl::FromCivil(absl::CivilSecond(1977, 6, 28, 9, 8, 7), lax) + + absl::Nanoseconds(1); const std::string when = absl::FormatTime(fmt, t, lax); std::string err; while (state.KeepRunning()) { diff --git a/absl/time/format_test.cc b/absl/time/format_test.cc index 7c84c33f1eb5..40f4c24633cc 100644 --- a/absl/time/format_test.cc +++ b/absl/time/format_test.cc @@ -118,7 +118,7 @@ TEST(FormatTime, RFC1123FormatPadsYear) { // locale specific absl::TimeZone tz = absl::UTCTimeZone(); // A year of 77 should be padded to 0077. - absl::Time t = absl::FromDateTime(77, 6, 28, 9, 8, 7, tz); + absl::Time t = absl::FromCivil(absl::CivilSecond(77, 6, 28, 9, 8, 7), tz); EXPECT_EQ("Mon, 28 Jun 0077 09:08:07 +0000", absl::FormatTime(absl::RFC1123_full, t, tz)); EXPECT_EQ("28 Jun 0077 09:08:07 +0000", @@ -154,9 +154,9 @@ TEST(ParseTime, Basics) { EXPECT_TRUE(absl::ParseTime("%Y-%m-%d %H:%M:%S %z", "2013-06-28 19:08:09 -0800", &t, &err)) << err; - absl::Time::Breakdown bd = t.In(absl::FixedTimeZone(-8 * 60 * 60)); - ABSL_INTERNAL_EXPECT_TIME(bd, 2013, 6, 28, 19, 8, 9, -8 * 60 * 60, false); - EXPECT_EQ(absl::ZeroDuration(), bd.subsecond); + const auto ci = absl::FixedTimeZone(-8 * 60 * 60).At(t); + EXPECT_EQ(absl::CivilSecond(2013, 6, 28, 19, 8, 9), ci.cs); + EXPECT_EQ(absl::ZeroDuration(), ci.subsecond); } TEST(ParseTime, NullErrorString) { @@ -177,17 +177,17 @@ TEST(ParseTime, WithTimeZone) { EXPECT_TRUE( absl::ParseTime("%Y-%m-%d %H:%M:%S", "2013-06-28 19:08:09", tz, &t, &e)) << e; - absl::Time::Breakdown bd = t.In(tz); - ABSL_INTERNAL_EXPECT_TIME(bd, 2013, 6, 28, 19, 8, 9, -7 * 60 * 60, true); - EXPECT_EQ(absl::ZeroDuration(), bd.subsecond); + auto ci = tz.At(t); + EXPECT_EQ(absl::CivilSecond(2013, 6, 28, 19, 8, 9), ci.cs); + EXPECT_EQ(absl::ZeroDuration(), ci.subsecond); // But the timezone is ignored when a UTC offset is present. EXPECT_TRUE(absl::ParseTime("%Y-%m-%d %H:%M:%S %z", "2013-06-28 19:08:09 +0800", tz, &t, &e)) << e; - bd = t.In(absl::FixedTimeZone(8 * 60 * 60)); - ABSL_INTERNAL_EXPECT_TIME(bd, 2013, 6, 28, 19, 8, 9, 8 * 60 * 60, false); - EXPECT_EQ(absl::ZeroDuration(), bd.subsecond); + ci = absl::FixedTimeZone(8 * 60 * 60).At(t); + EXPECT_EQ(absl::CivilSecond(2013, 6, 28, 19, 8, 9), ci.cs); + EXPECT_EQ(absl::ZeroDuration(), ci.subsecond); } TEST(ParseTime, ErrorCases) { @@ -332,15 +332,15 @@ TEST(ParseTime, InfiniteTime) { EXPECT_TRUE(absl::ParseTime("infinite-future %H:%M", "infinite-future 03:04", &t, &err)); EXPECT_NE(absl::InfiniteFuture(), t); - EXPECT_EQ(3, t.In(tz).hour); - EXPECT_EQ(4, t.In(tz).minute); + EXPECT_EQ(3, tz.At(t).cs.hour()); + EXPECT_EQ(4, tz.At(t).cs.minute()); // "infinite-past" as literal std::string EXPECT_TRUE( absl::ParseTime("infinite-past %H:%M", "infinite-past 03:04", &t, &err)); EXPECT_NE(absl::InfinitePast(), t); - EXPECT_EQ(3, t.In(tz).hour); - EXPECT_EQ(4, t.In(tz).minute); + EXPECT_EQ(3, tz.At(t).cs.hour()); + EXPECT_EQ(4, tz.At(t).cs.minute()); // The input doesn't match the format. EXPECT_FALSE(absl::ParseTime("infinite-future %H:%M", "03:04", &t, &err)); @@ -365,16 +365,17 @@ TEST(ParseTime, FailsOnUnrepresentableTime) { // TEST(FormatParse, RoundTrip) { - const absl::TimeZone gst = + const absl::TimeZone lax = absl::time_internal::LoadTimeZone("America/Los_Angeles"); - const absl::Time in = absl::FromDateTime(1977, 6, 28, 9, 8, 7, gst); + const absl::Time in = + absl::FromCivil(absl::CivilSecond(1977, 6, 28, 9, 8, 7), lax); const absl::Duration subseconds = absl::Nanoseconds(654321); std::string err; // RFC3339, which renders subseconds. { absl::Time out; - const std::string s = absl::FormatTime(absl::RFC3339_full, in + subseconds, gst); + const std::string s = absl::FormatTime(absl::RFC3339_full, in + subseconds, lax); EXPECT_TRUE(absl::ParseTime(absl::RFC3339_full, s, &out, &err)) << s << ": " << err; EXPECT_EQ(in + subseconds, out); // RFC3339_full includes %Ez @@ -383,7 +384,7 @@ TEST(FormatParse, RoundTrip) { // RFC1123, which only does whole seconds. { absl::Time out; - const std::string s = absl::FormatTime(absl::RFC1123_full, in, gst); + const std::string s = absl::FormatTime(absl::RFC1123_full, in, lax); EXPECT_TRUE(absl::ParseTime(absl::RFC1123_full, s, &out, &err)) << s << ": " << err; EXPECT_EQ(in, out); // RFC1123_full includes %z diff --git a/absl/time/internal/cctz/src/time_zone_posix.h b/absl/time/internal/cctz/src/time_zone_posix.h index 9ccd4a8b68bd..ef2a8c1647db 100644 --- a/absl/time/internal/cctz/src/time_zone_posix.h +++ b/absl/time/internal/cctz/src/time_zone_posix.h @@ -68,25 +68,35 @@ namespace cctz { // it would take us to another day, and perhaps week, or even month. struct PosixTransition { enum DateFormat { J, N, M }; - struct { + + struct Date { + struct NonLeapDay { + std::int_fast16_t day; // day of non-leap year [1:365] + }; + struct Day { + std::int_fast16_t day; // day of year [0:365] + }; + struct MonthWeekWeekday { + std::int_fast8_t month; // month of year [1:12] + std::int_fast8_t week; // week of month [1:5] (5==last) + std::int_fast8_t weekday; // 0==Sun, ..., 6=Sat + }; + DateFormat fmt; + union { - struct { - std::int_fast16_t day; // day of non-leap year [1:365] - } j; - struct { - std::int_fast16_t day; // day of year [0:365] - } n; - struct { - std::int_fast8_t month; // month of year [1:12] - std::int_fast8_t week; // week of month [1:5] (5==last) - std::int_fast8_t weekday; // 0==Sun, ..., 6=Sat - } m; + NonLeapDay j; + Day n; + MonthWeekWeekday m; }; - } date; - struct { + }; + + struct Time { std::int_fast32_t offset; // seconds before/after 00:00:00 - } time; + }; + + Date date; + Time time; }; // The entirety of a POSIX-string specified time-zone rule. The standard diff --git a/absl/time/internal/test_util.cc b/absl/time/internal/test_util.cc index bbbef7da70c4..4483f2a977e5 100644 --- a/absl/time/internal/test_util.cc +++ b/absl/time/internal/test_util.cc @@ -26,12 +26,6 @@ namespace cctz = absl::time_internal::cctz; namespace absl { namespace time_internal { -#if GTEST_USES_SIMPLE_RE -extern const char kZoneAbbrRE[] = ".*"; // just punt -#else -extern const char kZoneAbbrRE[] = "[A-Za-z]{3,4}|[-+][0-9]{2}([0-9]{2})?"; -#endif - TimeZone LoadTimeZone(const std::string& name) { TimeZone tz; ABSL_RAW_CHECK(LoadTimeZone(name, &tz), name.c_str()); diff --git a/absl/time/internal/test_util.h b/absl/time/internal/test_util.h index 8fd5fb9fd038..d99402934c67 100644 --- a/absl/time/internal/test_util.h +++ b/absl/time/internal/test_util.h @@ -17,35 +17,11 @@ #include <string> -#include "gmock/gmock.h" -#include "gtest/gtest.h" #include "absl/time/time.h" -// This helper is a macro so that failed expectations show up with the -// correct line numbers. -// -// This is for internal testing of the Base Time library itself. This is not -// part of a public API. -#define ABSL_INTERNAL_EXPECT_TIME(bd, y, m, d, h, min, s, off, isdst) \ - do { \ - EXPECT_EQ(y, bd.year); \ - EXPECT_EQ(m, bd.month); \ - EXPECT_EQ(d, bd.day); \ - EXPECT_EQ(h, bd.hour); \ - EXPECT_EQ(min, bd.minute); \ - EXPECT_EQ(s, bd.second); \ - EXPECT_EQ(off, bd.offset); \ - EXPECT_EQ(isdst, bd.is_dst); \ - EXPECT_THAT(bd.zone_abbr, \ - testing::MatchesRegex(absl::time_internal::kZoneAbbrRE)); \ - } while (0) - namespace absl { namespace time_internal { -// A regular expression that matches all zone abbreviations (%Z). -extern const char kZoneAbbrRE[]; - // Loads the named timezone, but dies on any failure. absl::TimeZone LoadTimeZone(const std::string& name); diff --git a/absl/time/time.cc b/absl/time/time.cc index 71fd8ee6e743..0703856fa327 100644 --- a/absl/time/time.cc +++ b/absl/time/time.cc @@ -22,13 +22,14 @@ // NOTE: To keep type verbosity to a minimum, the following variable naming // conventions are used throughout this file. // -// cz: A cctz::time_zone // tz: An absl::TimeZone +// ci: An absl::TimeZone::CivilInfo +// ti: An absl::TimeZone::TimeInfo +// cd: An absl::CivilDay or a cctz::civil_day +// cs: An absl::CivilSecond or a cctz::civil_second +// bd: An absl::Time::Breakdown // cl: A cctz::time_zone::civil_lookup // al: A cctz::time_zone::absolute_lookup -// cd: A cctz::civil_day -// cs: A cctz::civil_second -// bd: An absl::Time::Breakdown #include "absl/time/time.h" @@ -75,7 +76,7 @@ inline absl::Time::Breakdown InfiniteFutureBreakdown() { return bd; } -inline Time::Breakdown InfinitePastBreakdown() { +inline absl::Time::Breakdown InfinitePastBreakdown() { Time::Breakdown bd; bd.year = std::numeric_limits<int64_t>::min(); bd.month = 1; @@ -92,6 +93,26 @@ inline Time::Breakdown InfinitePastBreakdown() { return bd; } +inline absl::TimeZone::CivilInfo InfiniteFutureCivilInfo() { + TimeZone::CivilInfo ci; + ci.cs = CivilSecond::max(); + ci.subsecond = InfiniteDuration(); + ci.offset = 0; + ci.is_dst = false; + ci.zone_abbr = "-00"; + return ci; +} + +inline absl::TimeZone::CivilInfo InfinitePastCivilInfo() { + TimeZone::CivilInfo ci; + ci.cs = CivilSecond::min(); + ci.subsecond = -InfiniteDuration(); + ci.offset = 0; + ci.is_dst = false; + ci.zone_abbr = "-00"; + return ci; +} + inline absl::TimeConversion InfiniteFutureTimeConversion() { absl::TimeConversion tc; tc.pre = tc.trans = tc.post = absl::InfiniteFuture(); @@ -134,19 +155,6 @@ Time MakeTimeWithOverflow(const cctz::time_point<cctz::seconds>& sec, return time_internal::FromUnixDuration(time_internal::MakeDuration(hi)); } -inline absl::TimeConversion::Kind MapKind( - const cctz::time_zone::civil_lookup::civil_kind& kind) { - switch (kind) { - case cctz::time_zone::civil_lookup::UNIQUE: - return absl::TimeConversion::UNIQUE; - case cctz::time_zone::civil_lookup::SKIPPED: - return absl::TimeConversion::SKIPPED; - case cctz::time_zone::civil_lookup::REPEATED: - return absl::TimeConversion::REPEATED; - } - return absl::TimeConversion::UNIQUE; -} - // Returns Mon=1..Sun=7. inline int MapWeekday(const cctz::weekday& wd) { switch (wd) { @@ -170,9 +178,13 @@ inline int MapWeekday(const cctz::weekday& wd) { } // namespace +// +// Time +// + absl::Time::Breakdown Time::In(absl::TimeZone tz) const { - if (*this == absl::InfiniteFuture()) return absl::InfiniteFutureBreakdown(); - if (*this == absl::InfinitePast()) return absl::InfinitePastBreakdown(); + if (*this == absl::InfiniteFuture()) return InfiniteFutureBreakdown(); + if (*this == absl::InfinitePast()) return InfinitePastBreakdown(); const auto tp = unix_epoch() + cctz::seconds(time_internal::GetRepHi(rep_)); const auto al = cctz::time_zone(tz).lookup(tp); @@ -187,92 +199,18 @@ absl::Time::Breakdown Time::In(absl::TimeZone tz) const { bd.minute = cs.minute(); bd.second = cs.second(); bd.subsecond = time_internal::MakeDuration(0, time_internal::GetRepLo(rep_)); - bd.weekday = MapWeekday(get_weekday(cd)); - bd.yearday = get_yearday(cd); + bd.weekday = MapWeekday(cctz::get_weekday(cd)); + bd.yearday = cctz::get_yearday(cd); bd.offset = al.offset; bd.is_dst = al.is_dst; bd.zone_abbr = al.abbr; return bd; } -absl::Time FromTM(const struct tm& tm, absl::TimeZone tz) { - const auto cz = cctz::time_zone(tz); - const auto cs = - cctz::civil_second(tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, - tm.tm_hour, tm.tm_min, tm.tm_sec); - const auto cl = cz.lookup(cs); - const auto tp = tm.tm_isdst == 0 ? cl.post : cl.pre; - return MakeTimeWithOverflow(tp, cs, cz); -} - -struct tm ToTM(absl::Time t, absl::TimeZone tz) { - const absl::Time::Breakdown bd = t.In(tz); - struct tm tm; - std::memset(&tm, 0, sizeof(tm)); - tm.tm_sec = bd.second; - tm.tm_min = bd.minute; - tm.tm_hour = bd.hour; - tm.tm_mday = bd.day; - tm.tm_mon = bd.month - 1; - - // Saturates tm.tm_year in cases of over/underflow, accounting for the fact - // that tm.tm_year is years since 1900. - if (bd.year < std::numeric_limits<int>::min() + 1900) { - tm.tm_year = std::numeric_limits<int>::min(); - } else if (bd.year > std::numeric_limits<int>::max()) { - tm.tm_year = std::numeric_limits<int>::max() - 1900; - } else { - tm.tm_year = static_cast<int>(bd.year - 1900); - } - - tm.tm_wday = bd.weekday % 7; - tm.tm_yday = bd.yearday - 1; - tm.tm_isdst = bd.is_dst ? 1 : 0; - - return tm; -} - // -// Factory functions. +// Conversions from/to other time types. // -absl::TimeConversion ConvertDateTime(int64_t year, int mon, int day, int hour, - int min, int sec, TimeZone tz) { - // Avoids years that are too extreme for civil_second to normalize. - if (year > 300000000000) return InfiniteFutureTimeConversion(); - if (year < -300000000000) return InfinitePastTimeConversion(); - const auto cz = cctz::time_zone(tz); - const auto cs = cctz::civil_second(year, mon, day, hour, min, sec); - absl::TimeConversion tc; - tc.normalized = year != cs.year() || mon != cs.month() || day != cs.day() || - hour != cs.hour() || min != cs.minute() || sec != cs.second(); - const auto cl = cz.lookup(cs); - // Converts the civil_lookup struct to a TimeConversion. - tc.pre = MakeTimeWithOverflow(cl.pre, cs, cz, &tc.normalized); - tc.trans = MakeTimeWithOverflow(cl.trans, cs, cz, &tc.normalized); - tc.post = MakeTimeWithOverflow(cl.post, cs, cz, &tc.normalized); - tc.kind = MapKind(cl.kind); - return tc; -} - -absl::Time FromDateTime(int64_t year, int mon, int day, int hour, int min, - int sec, TimeZone tz) { - if (year > 300000000000) return InfiniteFuture(); - if (year < -300000000000) return InfinitePast(); - const auto cz = cctz::time_zone(tz); - const auto cs = cctz::civil_second(year, mon, day, hour, min, sec); - const auto cl = cz.lookup(cs); - return MakeTimeWithOverflow(cl.pre, cs, cz); -} - -absl::Time TimeFromTimespec(timespec ts) { - return time_internal::FromUnixDuration(absl::DurationFromTimespec(ts)); -} - -absl::Time TimeFromTimeval(timeval tv) { - return time_internal::FromUnixDuration(absl::DurationFromTimeval(tv)); -} - absl::Time FromUDate(double udate) { return time_internal::FromUnixDuration(absl::Milliseconds(udate)); } @@ -281,10 +219,6 @@ absl::Time FromUniversal(int64_t universal) { return absl::UniversalEpoch() + 100 * absl::Nanoseconds(universal); } -// -// Conversion to other time types. -// - int64_t ToUnixNanos(Time t) { if (time_internal::GetRepHi(time_internal::ToUnixDuration(t)) >= 0 && time_internal::GetRepHi(time_internal::ToUnixDuration(t)) >> 33 == 0) { @@ -321,6 +255,23 @@ int64_t ToUnixSeconds(Time t) { time_t ToTimeT(Time t) { return absl::ToTimespec(t).tv_sec; } +double ToUDate(Time t) { + return absl::FDivDuration(time_internal::ToUnixDuration(t), + absl::Milliseconds(1)); +} + +int64_t ToUniversal(absl::Time t) { + return absl::FloorToUnit(t - absl::UniversalEpoch(), absl::Nanoseconds(100)); +} + +absl::Time TimeFromTimespec(timespec ts) { + return time_internal::FromUnixDuration(absl::DurationFromTimespec(ts)); +} + +absl::Time TimeFromTimeval(timeval tv) { + return time_internal::FromUnixDuration(absl::DurationFromTimeval(tv)); +} + timespec ToTimespec(Time t) { timespec ts; absl::Duration d = time_internal::ToUnixDuration(t); @@ -359,15 +310,6 @@ timeval ToTimeval(Time t) { return tv; } -double ToUDate(Time t) { - return absl::FDivDuration(time_internal::ToUnixDuration(t), - absl::Milliseconds(1)); -} - -int64_t ToUniversal(absl::Time t) { - return absl::FloorToUnit(t - absl::UniversalEpoch(), absl::Nanoseconds(100)); -} - Time FromChrono(const std::chrono::system_clock::time_point& tp) { return time_internal::FromUnixDuration(time_internal::FromChrono( tp - std::chrono::system_clock::from_time_t(0))); @@ -381,4 +323,141 @@ std::chrono::system_clock::time_point ToChronoTime(absl::Time t) { time_internal::ToChronoDuration<D>(d); } +// +// TimeZone +// + +absl::TimeZone::CivilInfo TimeZone::At(Time t) const { + if (t == absl::InfiniteFuture()) return InfiniteFutureCivilInfo(); + if (t == absl::InfinitePast()) return InfinitePastCivilInfo(); + + const auto ud = time_internal::ToUnixDuration(t); + const auto tp = unix_epoch() + cctz::seconds(time_internal::GetRepHi(ud)); + const auto al = cz_.lookup(tp); + + TimeZone::CivilInfo ci; + ci.cs = CivilSecond(al.cs); + ci.subsecond = time_internal::MakeDuration(0, time_internal::GetRepLo(ud)); + ci.offset = al.offset; + ci.is_dst = al.is_dst; + ci.zone_abbr = al.abbr; + return ci; +} + +absl::TimeZone::TimeInfo TimeZone::At(CivilSecond ct) const { + const cctz::civil_second cs(ct); + const auto cl = cz_.lookup(cs); + + TimeZone::TimeInfo ti; + switch (cl.kind) { + case cctz::time_zone::civil_lookup::UNIQUE: + ti.kind = TimeZone::TimeInfo::UNIQUE; + break; + case cctz::time_zone::civil_lookup::SKIPPED: + ti.kind = TimeZone::TimeInfo::SKIPPED; + break; + case cctz::time_zone::civil_lookup::REPEATED: + ti.kind = TimeZone::TimeInfo::REPEATED; + break; + } + ti.pre = MakeTimeWithOverflow(cl.pre, cs, cz_); + ti.trans = MakeTimeWithOverflow(cl.trans, cs, cz_); + ti.post = MakeTimeWithOverflow(cl.post, cs, cz_); + return ti; +} + +// +// Conversions involving time zones. +// + +absl::TimeConversion ConvertDateTime(int64_t year, int mon, int day, int hour, + int min, int sec, TimeZone tz) { + // Avoids years that are too extreme for CivilSecond to normalize. + if (year > 300000000000) return InfiniteFutureTimeConversion(); + if (year < -300000000000) return InfinitePastTimeConversion(); + + const CivilSecond cs(year, mon, day, hour, min, sec); + const auto ti = tz.At(cs); + + TimeConversion tc; + tc.pre = ti.pre; + tc.trans = ti.trans; + tc.post = ti.post; + switch (ti.kind) { + case TimeZone::TimeInfo::UNIQUE: + tc.kind = TimeConversion::UNIQUE; + break; + case TimeZone::TimeInfo::SKIPPED: + tc.kind = TimeConversion::SKIPPED; + break; + case TimeZone::TimeInfo::REPEATED: + tc.kind = TimeConversion::REPEATED; + break; + } + tc.normalized = false; + if (year != cs.year() || mon != cs.month() || day != cs.day() || + hour != cs.hour() || min != cs.minute() || sec != cs.second()) { + tc.normalized = true; + } + return tc; +} + +absl::Time FromTM(const struct tm& tm, absl::TimeZone tz) { + const CivilSecond cs(tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, + tm.tm_hour, tm.tm_min, tm.tm_sec); + const auto ti = tz.At(cs); + return tm.tm_isdst == 0 ? ti.post : ti.pre; +} + +struct tm ToTM(absl::Time t, absl::TimeZone tz) { + struct tm tm = {}; + + const auto ci = tz.At(t); + const auto& cs = ci.cs; + tm.tm_sec = cs.second(); + tm.tm_min = cs.minute(); + tm.tm_hour = cs.hour(); + tm.tm_mday = cs.day(); + tm.tm_mon = cs.month() - 1; + + // Saturates tm.tm_year in cases of over/underflow, accounting for the fact + // that tm.tm_year is years since 1900. + if (cs.year() < std::numeric_limits<int>::min() + 1900) { + tm.tm_year = std::numeric_limits<int>::min(); + } else if (cs.year() > std::numeric_limits<int>::max()) { + tm.tm_year = std::numeric_limits<int>::max() - 1900; + } else { + tm.tm_year = static_cast<int>(cs.year() - 1900); + } + + const CivilDay cd(cs); + switch (GetWeekday(cd)) { + case Weekday::sunday: + tm.tm_wday = 0; + break; + case Weekday::monday: + tm.tm_wday = 1; + break; + case Weekday::tuesday: + tm.tm_wday = 2; + break; + case Weekday::wednesday: + tm.tm_wday = 3; + break; + case Weekday::thursday: + tm.tm_wday = 4; + break; + case Weekday::friday: + tm.tm_wday = 5; + break; + case Weekday::saturday: + tm.tm_wday = 6; + break; + } + tm.tm_yday = GetYearDay(cd) - 1; + tm.tm_isdst = ci.is_dst ? 1 : 0; + + return tm; +} + } // namespace absl diff --git a/absl/time/time.h b/absl/time/time.h index 50bf971df0a2..2858da2955f6 100644 --- a/absl/time/time.h +++ b/absl/time/time.h @@ -25,18 +25,29 @@ // * `absl::TimeZone` defines geopolitical time zone regions (as collected // within the IANA Time Zone database (https://www.iana.org/time-zones)). // +// Note: Absolute times are distinct from civil times, which refer to the +// human-scale time commonly represented by `YYYY-MM-DD hh:mm:ss`. The mapping +// between absolute and civil times can be specified by use of time zones +// (`absl::TimeZone` within this API). That is: +// +// Civil Time = F(Absolute Time, Time Zone) +// Absolute Time = G(Civil Time, Time Zone) +// +// See civil_time.h for abstractions related to constructing and manipulating +// civil time. // // Example: // // absl::TimeZone nyc; -// // // LoadTimeZone() may fail so it's always better to check for success. // if (!absl::LoadTimeZone("America/New_York", &nyc)) { // // handle error case // } // // // My flight leaves NYC on Jan 2, 2017 at 03:04:05 -// absl::Time takeoff = absl::FromDateTime(2017, 1, 2, 3, 4, 5, nyc); +// absl::CivilSecond cs(2017, 1, 2, 3, 4, 5); +// absl::Time takeoff = absl::FromCivil(cs, nyc); +// // absl::Duration flight_duration = absl::Hours(21) + absl::Minutes(35); // absl::Time landing = takeoff + flight_duration; // @@ -48,6 +59,7 @@ // "My flight will land in Sydney on %Y-%m-%d at %H:%M:%S", // landing, syd); // + #ifndef ABSL_TIME_TIME_H_ #define ABSL_TIME_TIME_H_ @@ -66,6 +78,7 @@ #include "absl/base/port.h" // Needed for string vs std::string #include "absl/strings/string_view.h" +#include "absl/time/civil_time.h" #include "absl/time/internal/cctz/include/cctz/time_zone.h" namespace absl { @@ -348,11 +361,11 @@ constexpr Duration InfiniteDuration(); // Factory functions for constructing `Duration` values from an integral number // of the unit indicated by the factory function's name. // -// Note: no "Days()" factory function exists because "a day" is ambiguous. Civil -// days are not always 24 hours long, and a 24-hour duration often does not -// correspond with a civil day. If a 24-hour duration is needed, use -// `absl::Hours(24)`. -// +// Note: no "Days()" factory function exists because "a day" is ambiguous. +// Civil days are not always 24 hours long, and a 24-hour duration often does +// not correspond with a civil day. If a 24-hour duration is needed, use +// `absl::Hours(24)`. (If you actually want a civil day, use absl::CivilDay +// from civil_time.h.) // // Example: // @@ -371,6 +384,7 @@ constexpr Duration Hours(int64_t n); // factories, which should be preferred. // // Example: +// // auto a = absl::Seconds(1.5); // OK // auto b = absl::Milliseconds(1500); // BETTER template <typename T, time_internal::EnableIfFloat<T> = 0> @@ -546,7 +560,7 @@ std::string UnparseFlag(Duration d); // // `absl::Time` uses a resolution that is high enough to avoid loss in // precision, and a range that is wide enough to avoid overflow, when -// converting between tick counts in most Google time scales (i.e., precision +// converting between tick counts in most Google time scales (i.e., resolution // of at least one nanosecond, and range +/-100 billion years). Conversions // between the time scales are performed by truncating (towards negative // infinity) to the nearest representable point. @@ -556,7 +570,6 @@ std::string UnparseFlag(Duration d); // absl::Time t1 = ...; // absl::Time t2 = t1 + absl::Minutes(2); // absl::Duration d = t2 - t1; // == absl::Minutes(2) -// absl::Time::Breakdown bd = t1.In(absl::LocalTimeZone()); // class Time { public: @@ -590,7 +603,10 @@ class Time { // intended to represent an instant in time. So, rather than passing // a `Time::Breakdown` to a function, pass an `absl::Time` and an // `absl::TimeZone`. - struct Breakdown { + // + // Deprecated. Use `absl::TimeZone::CivilInfo`. + struct + Breakdown { int64_t year; // year (e.g., 2013) int month; // month of year [1:12] int day; // day of month [1:31] @@ -614,6 +630,8 @@ class Time { // Time::In() // // Returns the breakdown of this instant in the given TimeZone. + // + // Deprecated. Use `absl::TimeZone::At(Time)`. Breakdown In(TimeZone tz) const; template <typename H> @@ -679,126 +697,6 @@ constexpr Time InfinitePast() { time_internal::MakeDuration(std::numeric_limits<int64_t>::min(), ~0U)); } -// TimeConversion -// -// An `absl::TimeConversion` represents the conversion of year, month, day, -// hour, minute, and second values (i.e., a civil time), in a particular -// `absl::TimeZone`, to a time instant (an absolute time), as returned by -// `absl::ConvertDateTime()`. (Subseconds must be handled separately.) -// -// It is possible, though, for a caller to try to convert values that -// do not represent an actual or unique instant in time (due to a shift -// in UTC offset in the `absl::TimeZone`, which results in a discontinuity in -// the civil-time components). For example, a daylight-saving-time -// transition skips or repeats civil times---in the United States, March -// 13, 2011 02:15 never occurred, while November 6, 2011 01:15 occurred -// twice---so requests for such times are not well-defined. -// -// To account for these possibilities, `absl::TimeConversion` is richer -// than just a single `absl::Time`. When the civil time is skipped or -// repeated, `absl::ConvertDateTime()` returns times calculated using the -// pre-transition and post-transition UTC offsets, plus the transition -// time itself. -// -// Examples: -// -// absl::TimeZone lax; -// if (!absl::LoadTimeZone("America/Los_Angeles", &lax)) { -// // handle error case -// } -// -// // A unique civil time -// absl::TimeConversion jan01 = -// absl::ConvertDateTime(2011, 1, 1, 0, 0, 0, lax); -// // jan01.kind == TimeConversion::UNIQUE -// // jan01.pre is 2011/01/01 00:00:00 -0800 -// // jan01.trans is 2011/01/01 00:00:00 -0800 -// // jan01.post is 2011/01/01 00:00:00 -0800 -// -// // A Spring DST transition, when there is a gap in civil time -// absl::TimeConversion mar13 = -// absl::ConvertDateTime(2011, 3, 13, 2, 15, 0, lax); -// // mar13.kind == TimeConversion::SKIPPED -// // mar13.pre is 2011/03/13 03:15:00 -0700 -// // mar13.trans is 2011/03/13 03:00:00 -0700 -// // mar13.post is 2011/03/13 01:15:00 -0800 -// -// // A Fall DST transition, when civil times are repeated -// absl::TimeConversion nov06 = -// absl::ConvertDateTime(2011, 11, 6, 1, 15, 0, lax); -// // nov06.kind == TimeConversion::REPEATED -// // nov06.pre is 2011/11/06 01:15:00 -0700 -// // nov06.trans is 2011/11/06 01:00:00 -0800 -// // nov06.post is 2011/11/06 01:15:00 -0800 -// -// The input month, day, hour, minute, and second values can also be -// outside of their valid ranges, in which case they will be "normalized" -// during the conversion. -// -// Example: -// -// // "October 32" normalizes to "November 1". -// absl::TimeZone tz = absl::LocalTimeZone(); -// absl::TimeConversion tc = -// absl::ConvertDateTime(2013, 10, 32, 8, 30, 0, tz); -// // tc.kind == TimeConversion::UNIQUE && tc.normalized == true -// // tc.pre.In(tz).month == 11 && tc.pre.In(tz).day == 1 -struct TimeConversion { - Time pre; // time calculated using the pre-transition offset - Time trans; // when the civil-time discontinuity occurred - Time post; // time calculated using the post-transition offset - - enum Kind { - UNIQUE, // the civil time was singular (pre == trans == post) - SKIPPED, // the civil time did not exist - REPEATED, // the civil time was ambiguous - }; - Kind kind; - - bool normalized; // input values were outside their valid ranges -}; - -// ConvertDateTime() -// -// The full generality of a civil time to absl::Time conversion. -TimeConversion ConvertDateTime(int64_t year, int mon, int day, int hour, - int min, int sec, TimeZone tz); - -// FromDateTime() -// -// A convenience wrapper for `absl::ConvertDateTime()` that simply returns the -// "pre" `absl::Time`. That is, the unique result, or the instant that -// is correct using the pre-transition offset (as if the transition -// never happened). This is typically the answer that humans expected when -// faced with non-unique times, such as near daylight-saving time transitions. -// -// Example: -// -// absl::TimeZone seattle; -// if (!absl::LoadTimeZone("America/Los_Angeles", &seattle)) { -// // handle error case -// } -// absl::Time t = absl::FromDateTime(2017, 9, 26, 9, 30, 0, seattle); -Time FromDateTime(int64_t year, int mon, int day, int hour, int min, int sec, - TimeZone tz); - -// FromTM() -// -// Converts the `tm_year`, `tm_mon`, `tm_mday`, `tm_hour`, `tm_min`, and -// `tm_sec` fields to an `absl::Time` using the given time zone. See ctime(3) -// for a description of the expected values of the tm fields. IFF the indicated -// time instant is not unique (see `absl::ConvertDateTime()` above), the -// `tm_isdst` field is consulted to select the desired instant (`tm_isdst` > 0 -// means DST, `tm_isdst` == 0 means no DST, `tm_isdst` < 0 means use the default -// like `absl::FromDateTime()`). -Time FromTM(const struct tm& tm, TimeZone tz); - -// ToTM() -// -// Converts the given `absl::Time` to a struct tm using the given time zone. -// See ctime(3) for a description of the values of the tm fields. -struct tm ToTM(Time t, TimeZone tz); - // FromUnixNanos() // FromUnixMicros() // FromUnixMillis() @@ -883,6 +781,340 @@ Time FromChrono(const std::chrono::system_clock::time_point& tp); // // tp == std::chrono::system_clock::from_time_t(123); std::chrono::system_clock::time_point ToChronoTime(Time); +// Support for flag values of type Time. Time flags must be specified in a +// format that matches absl::RFC3339_full. For example: +// +// --start_time=2016-01-02T03:04:05.678+08:00 +// +// Note: A UTC offset (or 'Z' indicating a zero-offset from UTC) is required. +// +// Additionally, if you'd like to specify a time as a count of +// seconds/milliseconds/etc from the Unix epoch, use an absl::Duration flag +// and add that duration to absl::UnixEpoch() to get an absl::Time. +bool ParseFlag(const std::string& text, Time* t, std::string* error); +std::string UnparseFlag(Time t); + +// TimeZone +// +// The `absl::TimeZone` is an opaque, small, value-type class representing a +// geo-political region within which particular rules are used for converting +// between absolute and civil times (see https://git.io/v59Ly). `absl::TimeZone` +// values are named using the TZ identifiers from the IANA Time Zone Database, +// such as "America/Los_Angeles" or "Australia/Sydney". `absl::TimeZone` values +// are created from factory functions such as `absl::LoadTimeZone()`. Note: +// strings like "PST" and "EDT" are not valid TZ identifiers. Prefer to pass by +// value rather than const reference. +// +// For more on the fundamental concepts of time zones, absolute times, and civil +// times, see https://github.com/google/cctz#fundamental-concepts +// +// Examples: +// +// absl::TimeZone utc = absl::UTCTimeZone(); +// absl::TimeZone pst = absl::FixedTimeZone(-8 * 60 * 60); +// absl::TimeZone loc = absl::LocalTimeZone(); +// absl::TimeZone lax; +// if (!absl::LoadTimeZone("America/Los_Angeles", &lax)) { +// // handle error case +// } +// +// See also: +// - https://github.com/google/cctz +// - http://www.iana.org/time-zones +// - http://en.wikipedia.org/wiki/Zoneinfo +class TimeZone { + public: + explicit TimeZone(time_internal::cctz::time_zone tz) : cz_(tz) {} + TimeZone() = default; // UTC, but prefer UTCTimeZone() to be explicit. + TimeZone(const TimeZone&) = default; + TimeZone& operator=(const TimeZone&) = default; + + explicit operator time_internal::cctz::time_zone() const { return cz_; } + + std::string name() const { return cz_.name(); } + + // TimeZone::CivilInfo + // + // Information about the civil time corresponding to an absolute time. + // This struct is not intended to represent an instant in time. So, rather + // than passing a `TimeZone::CivilInfo` to a function, pass an `absl::Time` + // and an `absl::TimeZone`. + struct CivilInfo { + CivilSecond cs; + Duration subsecond; + + // Note: The following fields exist for backward compatibility + // with older APIs. Accessing these fields directly is a sign of + // imprudent logic in the calling code. Modern time-related code + // should only access this data indirectly by way of FormatTime(). + // These fields are undefined for InfiniteFuture() and InfinitePast(). + int offset; // seconds east of UTC + bool is_dst; // is offset non-standard? + const char* zone_abbr; // time-zone abbreviation (e.g., "PST") + }; + + // TimeZone::At(Time) + // + // Returns the civil time for this TimeZone at a certain `absl::Time`. + // If the input time is infinite, the output civil second will be set to + // CivilSecond::max() or min(), and the subsecond will be infinite. + // + // Example: + // + // const auto epoch = lax.At(absl::UnixEpoch()); + // // epoch.cs == 1969-12-31 16:00:00 + // // epoch.subsecond == absl::ZeroDuration() + // // epoch.offset == -28800 + // // epoch.is_dst == false + // // epoch.abbr == "PST" + CivilInfo At(Time t) const; + + // TimeZone::TimeInfo + // + // Information about the absolute times corresponding to a civil time. + // (Subseconds must be handled separately.) + // + // It is possible for a caller to pass a civil-time value that does + // not represent an actual or unique instant in time (due to a shift + // in UTC offset in the TimeZone, which results in a discontinuity in + // the civil-time components). For example, a daylight-saving-time + // transition skips or repeats civil times---in the United States, + // March 13, 2011 02:15 never occurred, while November 6, 2011 01:15 + // occurred twice---so requests for such times are not well-defined. + // To account for these possibilities, `absl::TimeZone::TimeInfo` is + // richer than just a single `absl::Time`. + struct TimeInfo { + enum CivilKind { + UNIQUE, // the civil time was singular (pre == trans == post) + SKIPPED, // the civil time did not exist (pre => trans > post) + REPEATED, // the civil time was ambiguous (pre < trans <= post) + } kind; + Time pre; // time calculated using the pre-transition offset + Time trans; // when the civil-time discontinuity occurred + Time post; // time calculated using the post-transition offset + }; + + // TimeZone::At(CivilSecond) + // + // Returns an `absl::TimeInfo` containing the absolute time(s) for this + // TimeZone at an `absl::CivilSecond`. When the civil time is skipped or + // repeated, returns times calculated using the pre-transition and post- + // transition UTC offsets, plus the transition time itself. + // + // Examples: + // + // // A unique civil time + // const auto jan01 = lax.At(absl::CivilSecond(2011, 1, 1, 0, 0, 0)); + // // jan01.kind == TimeZone::TimeInfo::UNIQUE + // // jan01.pre is 2011-01-01 00:00:00 -0800 + // // jan01.trans is 2011-01-01 00:00:00 -0800 + // // jan01.post is 2011-01-01 00:00:00 -0800 + // + // // A Spring DST transition, when there is a gap in civil time + // const auto mar13 = lax.At(absl::CivilSecond(2011, 3, 13, 2, 15, 0)); + // // mar13.kind == TimeZone::TimeInfo::SKIPPED + // // mar13.pre is 2011-03-13 03:15:00 -0700 + // // mar13.trans is 2011-03-13 03:00:00 -0700 + // // mar13.post is 2011-03-13 01:15:00 -0800 + // + // // A Fall DST transition, when civil times are repeated + // const auto nov06 = lax.At(absl::CivilSecond(2011, 11, 6, 1, 15, 0)); + // // nov06.kind == TimeZone::TimeInfo::REPEATED + // // nov06.pre is 2011-11-06 01:15:00 -0700 + // // nov06.trans is 2011-11-06 01:00:00 -0800 + // // nov06.post is 2011-11-06 01:15:00 -0800 + TimeInfo At(CivilSecond ct) const; + + template <typename H> + friend H AbslHashValue(H h, TimeZone tz) { + return H::combine(std::move(h), tz.cz_); + } + + private: + friend bool operator==(TimeZone a, TimeZone b) { return a.cz_ == b.cz_; } + friend bool operator!=(TimeZone a, TimeZone b) { return a.cz_ != b.cz_; } + friend std::ostream& operator<<(std::ostream& os, TimeZone tz) { + return os << tz.name(); + } + + time_internal::cctz::time_zone cz_; +}; + +// LoadTimeZone() +// +// Loads the named zone. May perform I/O on the initial load of the named +// zone. If the name is invalid, or some other kind of error occurs, returns +// `false` and `*tz` is set to the UTC time zone. +inline bool LoadTimeZone(const std::string& name, TimeZone* tz) { + if (name == "localtime") { + *tz = TimeZone(time_internal::cctz::local_time_zone()); + return true; + } + time_internal::cctz::time_zone cz; + const bool b = time_internal::cctz::load_time_zone(name, &cz); + *tz = TimeZone(cz); + return b; +} + +// FixedTimeZone() +// +// Returns a TimeZone that is a fixed offset (seconds east) from UTC. +// Note: If the absolute value of the offset is greater than 24 hours +// you'll get UTC (i.e., no offset) instead. +inline TimeZone FixedTimeZone(int seconds) { + return TimeZone( + time_internal::cctz::fixed_time_zone(std::chrono::seconds(seconds))); +} + +// UTCTimeZone() +// +// Convenience method returning the UTC time zone. +inline TimeZone UTCTimeZone() { + return TimeZone(time_internal::cctz::utc_time_zone()); +} + +// LocalTimeZone() +// +// Convenience method returning the local time zone, or UTC if there is +// no configured local zone. Warning: Be wary of using LocalTimeZone(), +// and particularly so in a server process, as the zone configured for the +// local machine should be irrelevant. Prefer an explicit zone name. +inline TimeZone LocalTimeZone() { + return TimeZone(time_internal::cctz::local_time_zone()); +} + +// ToCivilSecond() +// ToCivilMinute() +// ToCivilHour() +// ToCivilDay() +// ToCivilMonth() +// ToCivilYear() +// +// Helpers for TimeZone::At(Time) to return particularly aligned civil times. +// +// Example: +// +// absl::Time t = ...; +// absl::TimeZone tz = ...; +// const auto cd = absl::ToCivilDay(t, tz); +inline CivilSecond ToCivilSecond(Time t, TimeZone tz) { + return tz.At(t).cs; // already a CivilSecond +} +inline CivilMinute ToCivilMinute(Time t, TimeZone tz) { + return CivilMinute(tz.At(t).cs); +} +inline CivilHour ToCivilHour(Time t, TimeZone tz) { + return CivilHour(tz.At(t).cs); +} +inline CivilDay ToCivilDay(Time t, TimeZone tz) { + return CivilDay(tz.At(t).cs); +} +inline CivilMonth ToCivilMonth(Time t, TimeZone tz) { + return CivilMonth(tz.At(t).cs); +} +inline CivilYear ToCivilYear(Time t, TimeZone tz) { + return CivilYear(tz.At(t).cs); +} + +// FromCivil() +// +// Helper for TimeZone::At(CivilSecond) that provides "order-preserving +// semantics." If the civil time maps to a unique time, that time is +// returned. If the civil time is repeated in the given time zone, the +// time using the pre-transition offset is returned. Otherwise, the +// civil time is skipped in the given time zone, and the transition time +// is returned. This means that for any two civil times, ct1 and ct2, +// (ct1 < ct2) => (FromCivil(ct1) <= FromCivil(ct2)), the equal case +// being when two non-existent civil times map to the same transition time. +// +// Note: Accepts civil times of any alignment. +inline Time FromCivil(CivilSecond ct, TimeZone tz) { + const auto ti = tz.At(ct); + if (ti.kind == TimeZone::TimeInfo::SKIPPED) return ti.trans; + return ti.pre; +} + +// TimeConversion +// +// An `absl::TimeConversion` represents the conversion of year, month, day, +// hour, minute, and second values (i.e., a civil time), in a particular +// `absl::TimeZone`, to a time instant (an absolute time), as returned by +// `absl::ConvertDateTime()`. Lecacy version of `absl::TimeZone::TimeInfo`. +// +// Deprecated. Use `absl::TimeZone::TimeInfo`. +struct + TimeConversion { + Time pre; // time calculated using the pre-transition offset + Time trans; // when the civil-time discontinuity occurred + Time post; // time calculated using the post-transition offset + + enum Kind { + UNIQUE, // the civil time was singular (pre == trans == post) + SKIPPED, // the civil time did not exist + REPEATED, // the civil time was ambiguous + }; + Kind kind; + + bool normalized; // input values were outside their valid ranges +}; + +// ConvertDateTime() +// +// Legacy version of `absl::TimeZone::At(absl::CivilSecond)` that takes +// the civil time as six, separate values (YMDHMS). +// +// The input month, day, hour, minute, and second values can be outside +// of their valid ranges, in which case they will be "normalized" during +// the conversion. +// +// Example: +// +// // "October 32" normalizes to "November 1". +// absl::TimeConversion tc = +// absl::ConvertDateTime(2013, 10, 32, 8, 30, 0, lax); +// // tc.kind == TimeConversion::UNIQUE && tc.normalized == true +// // absl::ToCivilDay(tc.pre, tz).month() == 11 +// // absl::ToCivilDay(tc.pre, tz).day() == 1 +// +// Deprecated. Use `absl::TimeZone::At(CivilSecond)`. +TimeConversion ConvertDateTime(int64_t year, int mon, int day, int hour, + int min, int sec, TimeZone tz); + +// FromDateTime() +// +// A convenience wrapper for `absl::ConvertDateTime()` that simply returns +// the "pre" `absl::Time`. That is, the unique result, or the instant that +// is correct using the pre-transition offset (as if the transition never +// happened). +// +// Example: +// +// absl::Time t = absl::FromDateTime(2017, 9, 26, 9, 30, 0, lax); +// // t = 2017-09-26 09:30:00 -0700 +// +// Deprecated. Use `absl::TimeZone::At(CivilSecond).pre`. +inline Time FromDateTime(int64_t year, int mon, int day, int hour, + int min, int sec, TimeZone tz) { + return ConvertDateTime(year, mon, day, hour, min, sec, tz).pre; +} + +// FromTM() +// +// Converts the `tm_year`, `tm_mon`, `tm_mday`, `tm_hour`, `tm_min`, and +// `tm_sec` fields to an `absl::Time` using the given time zone. See ctime(3) +// for a description of the expected values of the tm fields. If the indicated +// time instant is not unique (see `absl::TimeZone::At(absl::CivilSecond)` +// above), the `tm_isdst` field is consulted to select the desired instant +// (`tm_isdst` > 0 means DST, `tm_isdst` == 0 means no DST, `tm_isdst` < 0 +// means use the post-transition offset). +Time FromTM(const struct tm& tm, TimeZone tz); + +// ToTM() +// +// Converts the given `absl::Time` to a struct tm using the given time zone. +// See ctime(3) for a description of the values of the tm fields. +struct tm ToTM(Time t, TimeZone tz); + // RFC3339_full // RFC3339_sec // @@ -929,12 +1161,8 @@ extern const char RFC1123_no_wday[]; // %d %b %E4Y %H:%M:%S %z // // Example: // -// absl::TimeZone lax; -// if (!absl::LoadTimeZone("America/Los_Angeles", &lax)) { -// // handle error case -// } -// absl::Time t = absl::FromDateTime(2013, 1, 2, 3, 4, 5, lax); -// +// absl::CivilSecond cs(2013, 1, 2, 3, 4, 5); +// absl::Time t = absl::FromCivil(cs, lax); // string f = absl::FormatTime("%H:%M:%S", t, lax); // "03:04:05" // f = absl::FormatTime("%H:%M:%E3S", t, lax); // "03:04:05.000" // @@ -985,7 +1213,7 @@ inline std::ostream& operator<<(std::ostream& os, Time t) { // in the conversion. // // Date and time fields that are out-of-range will be treated as errors -// rather than normalizing them like `absl::FromDateTime()` does. For example, +// rather than normalizing them like `absl::CivilSecond` does. For example, // it is an error to parse the date "Oct 32, 2013" because 32 is out of range. // // A leap second of ":60" is normalized to ":00" of the following minute @@ -1012,121 +1240,11 @@ bool ParseTime(const std::string& format, const std::string& input, Time* time, // given TimeZone. This means that the input, by itself, does not identify a // unique instant. Being time-zone dependent, it also admits the possibility // of ambiguity or non-existence, in which case the "pre" time (as defined -// for ConvertDateTime()) is returned. For these reasons we recommend that +// by TimeZone::TimeInfo) is returned. For these reasons we recommend that // all date/time strings include a UTC offset so they're context independent. bool ParseTime(const std::string& format, const std::string& input, TimeZone tz, Time* time, std::string* err); -// Support for flag values of type Time. Time flags must be specified in a -// format that matches absl::RFC3339_full. For example: -// -// --start_time=2016-01-02T03:04:05.678+08:00 -// -// Note: A UTC offset (or 'Z' indicating a zero-offset from UTC) is required. -// -// Additionally, if you'd like to specify a time as a count of -// seconds/milliseconds/etc from the Unix epoch, use an absl::Duration flag -// and add that duration to absl::UnixEpoch() to get an absl::Time. -bool ParseFlag(const std::string& text, Time* t, std::string* error); -std::string UnparseFlag(Time t); - -// TimeZone -// -// The `absl::TimeZone` is an opaque, small, value-type class representing a -// geo-political region within which particular rules are used for converting -// between absolute and civil times (see https://git.io/v59Ly). `absl::TimeZone` -// values are named using the TZ identifiers from the IANA Time Zone Database, -// such as "America/Los_Angeles" or "Australia/Sydney". `absl::TimeZone` values -// are created from factory functions such as `absl::LoadTimeZone()`. Note: -// strings like "PST" and "EDT" are not valid TZ identifiers. Prefer to pass by -// value rather than const reference. -// -// For more on the fundamental concepts of time zones, absolute times, and civil -// times, see https://github.com/google/cctz#fundamental-concepts -// -// Examples: -// -// absl::TimeZone utc = absl::UTCTimeZone(); -// absl::TimeZone pst = absl::FixedTimeZone(-8 * 60 * 60); -// absl::TimeZone loc = absl::LocalTimeZone(); -// absl::TimeZone lax; -// if (!absl::LoadTimeZone("America/Los_Angeles", &lax)) { -// // handle error case -// } -// -// See also: -// - https://github.com/google/cctz -// - http://www.iana.org/time-zones -// - http://en.wikipedia.org/wiki/Zoneinfo -class TimeZone { - public: - explicit TimeZone(time_internal::cctz::time_zone tz) : cz_(tz) {} - TimeZone() = default; // UTC, but prefer UTCTimeZone() to be explicit. - TimeZone(const TimeZone&) = default; - TimeZone& operator=(const TimeZone&) = default; - - explicit operator time_internal::cctz::time_zone() const { return cz_; } - - std::string name() const { return cz_.name(); } - - template <typename H> - friend H AbslHashValue(H h, TimeZone tz) { - return H::combine(std::move(h), tz.cz_); - } - - private: - friend bool operator==(TimeZone a, TimeZone b) { return a.cz_ == b.cz_; } - friend bool operator!=(TimeZone a, TimeZone b) { return a.cz_ != b.cz_; } - friend std::ostream& operator<<(std::ostream& os, TimeZone tz) { - return os << tz.name(); - } - - time_internal::cctz::time_zone cz_; -}; - -// LoadTimeZone() -// -// Loads the named zone. May perform I/O on the initial load of the named -// zone. If the name is invalid, or some other kind of error occurs, returns -// `false` and `*tz` is set to the UTC time zone. -inline bool LoadTimeZone(const std::string& name, TimeZone* tz) { - if (name == "localtime") { - *tz = TimeZone(time_internal::cctz::local_time_zone()); - return true; - } - time_internal::cctz::time_zone cz; - const bool b = time_internal::cctz::load_time_zone(name, &cz); - *tz = TimeZone(cz); - return b; -} - -// FixedTimeZone() -// -// Returns a TimeZone that is a fixed offset (seconds east) from UTC. -// Note: If the absolute value of the offset is greater than 24 hours -// you'll get UTC (i.e., no offset) instead. -inline TimeZone FixedTimeZone(int seconds) { - return TimeZone( - time_internal::cctz::fixed_time_zone(std::chrono::seconds(seconds))); -} - -// UTCTimeZone() -// -// Convenience method returning the UTC time zone. -inline TimeZone UTCTimeZone() { - return TimeZone(time_internal::cctz::utc_time_zone()); -} - -// LocalTimeZone() -// -// Convenience method returning the local time zone, or UTC if there is -// no configured local zone. Warning: Be wary of using LocalTimeZone(), -// and particularly so in a server process, as the zone configured for the -// local machine should be irrelevant. Prefer an explicit zone name. -inline TimeZone LocalTimeZone() { - return TimeZone(time_internal::cctz::local_time_zone()); -} - // ============================================================================ // Implementation Details Follow // ============================================================================ diff --git a/absl/time/time_benchmark.cc b/absl/time/time_benchmark.cc index e1009946cd58..9bbed6f81afe 100644 --- a/absl/time/time_benchmark.cc +++ b/absl/time/time_benchmark.cc @@ -169,32 +169,32 @@ void BM_Time_ToUnixSeconds(benchmark::State& state) { BENCHMARK(BM_Time_ToUnixSeconds); // -// FromDateTime +// FromCivil // -// In each "FromDateTime" benchmark we switch between two YMDhms -// values separated by at least one transition in order to defeat any -// internal caching of previous results (e.g., see time_local_hint_). +// In each "FromCivil" benchmark we switch between two YMDhms values +// separated by at least one transition in order to defeat any internal +// caching of previous results (e.g., see time_local_hint_). // // The "UTC" variants use UTC instead of the Google/local time zone. // The "Day0" variants require normalization of the day of month. // -void BM_Time_FromDateTime_Absl(benchmark::State& state) { +void BM_Time_FromCivil_Absl(benchmark::State& state) { const absl::TimeZone tz = absl::time_internal::LoadTimeZone("America/Los_Angeles"); int i = 0; while (state.KeepRunning()) { if ((i & 1) == 0) { - absl::FromDateTime(2014, 12, 18, 20, 16, 18, tz); + absl::FromCivil(absl::CivilSecond(2014, 12, 18, 20, 16, 18), tz); } else { - absl::FromDateTime(2013, 11, 15, 18, 30, 27, tz); + absl::FromCivil(absl::CivilSecond(2013, 11, 15, 18, 30, 27), tz); } ++i; } } -BENCHMARK(BM_Time_FromDateTime_Absl); +BENCHMARK(BM_Time_FromCivil_Absl); -void BM_Time_FromDateTime_Libc(benchmark::State& state) { +void BM_Time_FromCivil_Libc(benchmark::State& state) { // No timezone support, so just use localtime. int i = 0; while (state.KeepRunning()) { @@ -219,32 +219,32 @@ void BM_Time_FromDateTime_Libc(benchmark::State& state) { ++i; } } -BENCHMARK(BM_Time_FromDateTime_Libc); +BENCHMARK(BM_Time_FromCivil_Libc); -void BM_Time_FromDateTimeUTC_Absl(benchmark::State& state) { +void BM_Time_FromCivilUTC_Absl(benchmark::State& state) { const absl::TimeZone tz = absl::UTCTimeZone(); while (state.KeepRunning()) { - FromDateTime(2014, 12, 18, 20, 16, 18, tz); + absl::FromCivil(absl::CivilSecond(2014, 12, 18, 20, 16, 18), tz); } } -BENCHMARK(BM_Time_FromDateTimeUTC_Absl); +BENCHMARK(BM_Time_FromCivilUTC_Absl); -void BM_Time_FromDateTimeDay0_Absl(benchmark::State& state) { +void BM_Time_FromCivilDay0_Absl(benchmark::State& state) { const absl::TimeZone tz = absl::time_internal::LoadTimeZone("America/Los_Angeles"); int i = 0; while (state.KeepRunning()) { if ((i & 1) == 0) { - absl::FromDateTime(2014, 12, 0, 20, 16, 18, tz); + absl::FromCivil(absl::CivilSecond(2014, 12, 0, 20, 16, 18), tz); } else { - absl::FromDateTime(2013, 11, 0, 18, 30, 27, tz); + absl::FromCivil(absl::CivilSecond(2013, 11, 0, 18, 30, 27), tz); } ++i; } } -BENCHMARK(BM_Time_FromDateTimeDay0_Absl); +BENCHMARK(BM_Time_FromCivilDay0_Absl); -void BM_Time_FromDateTimeDay0_Libc(benchmark::State& state) { +void BM_Time_FromCivilDay0_Libc(benchmark::State& state) { // No timezone support, so just use localtime. int i = 0; while (state.KeepRunning()) { @@ -269,7 +269,7 @@ void BM_Time_FromDateTimeDay0_Libc(benchmark::State& state) { ++i; } } -BENCHMARK(BM_Time_FromDateTimeDay0_Libc); +BENCHMARK(BM_Time_FromCivilDay0_Libc); // // To/FromTimespec diff --git a/absl/time/time_norm_test.cc b/absl/time/time_norm_test.cc deleted file mode 100644 index 4436242e4125..000000000000 --- a/absl/time/time_norm_test.cc +++ /dev/null @@ -1,306 +0,0 @@ -// Copyright 2017 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 -// -// http://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. - -// This file contains tests for FromDateTime() normalization, which is -// time-zone independent so we just use UTC throughout. - -#include <cstdint> -#include <limits> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "absl/time/internal/test_util.h" -#include "absl/time/time.h" - -namespace { - -TEST(TimeNormCase, SimpleOverflow) { - const absl::TimeZone utc = absl::UTCTimeZone(); - - absl::TimeConversion tc = - absl::ConvertDateTime(2013, 11, 15, 16, 32, 59 + 1, utc); - EXPECT_TRUE(tc.normalized); - EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind); - absl::Time::Breakdown bd = tc.pre.In(utc); - ABSL_INTERNAL_EXPECT_TIME(bd, 2013, 11, 15, 16, 33, 0, 0, false); - - tc = absl::ConvertDateTime(2013, 11, 15, 16, 59 + 1, 14, utc); - EXPECT_TRUE(tc.normalized); - EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind); - bd = tc.pre.In(utc); - ABSL_INTERNAL_EXPECT_TIME(bd, 2013, 11, 15, 17, 0, 14, 0, false); - - tc = absl::ConvertDateTime(2013, 11, 15, 23 + 1, 32, 14, utc); - EXPECT_TRUE(tc.normalized); - EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind); - bd = tc.pre.In(utc); - ABSL_INTERNAL_EXPECT_TIME(bd, 2013, 11, 16, 0, 32, 14, 0, false); - - tc = absl::ConvertDateTime(2013, 11, 30 + 1, 16, 32, 14, utc); - EXPECT_TRUE(tc.normalized); - EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind); - bd = tc.pre.In(utc); - ABSL_INTERNAL_EXPECT_TIME(bd, 2013, 12, 1, 16, 32, 14, 0, false); - - tc = absl::ConvertDateTime(2013, 12 + 1, 15, 16, 32, 14, utc); - EXPECT_TRUE(tc.normalized); - EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind); - bd = tc.pre.In(utc); - ABSL_INTERNAL_EXPECT_TIME(bd, 2014, 1, 15, 16, 32, 14, 0, false); -} - -TEST(TimeNormCase, SimpleUnderflow) { - const absl::TimeZone utc = absl::UTCTimeZone(); - - absl::TimeConversion tc = ConvertDateTime(2013, 11, 15, 16, 32, 0 - 1, utc); - EXPECT_TRUE(tc.normalized); - EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind); - absl::Time::Breakdown bd = tc.pre.In(utc); - ABSL_INTERNAL_EXPECT_TIME(bd, 2013, 11, 15, 16, 31, 59, 0, false); - - tc = ConvertDateTime(2013, 11, 15, 16, 0 - 1, 14, utc); - EXPECT_TRUE(tc.normalized); - EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind); - bd = tc.pre.In(utc); - ABSL_INTERNAL_EXPECT_TIME(bd, 2013, 11, 15, 15, 59, 14, 0, false); - - tc = ConvertDateTime(2013, 11, 15, 0 - 1, 32, 14, utc); - EXPECT_TRUE(tc.normalized); - EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind); - bd = tc.pre.In(utc); - ABSL_INTERNAL_EXPECT_TIME(bd, 2013, 11, 14, 23, 32, 14, 0, false); - - tc = ConvertDateTime(2013, 11, 1 - 1, 16, 32, 14, utc); - EXPECT_TRUE(tc.normalized); - EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind); - bd = tc.pre.In(utc); - ABSL_INTERNAL_EXPECT_TIME(bd, 2013, 10, 31, 16, 32, 14, 0, false); - - tc = ConvertDateTime(2013, 1 - 1, 15, 16, 32, 14, utc); - EXPECT_TRUE(tc.normalized); - EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind); - bd = tc.pre.In(utc); - ABSL_INTERNAL_EXPECT_TIME(bd, 2012, 12, 15, 16, 32, 14, 0, false); -} - -TEST(TimeNormCase, MultipleOverflow) { - const absl::TimeZone utc = absl::UTCTimeZone(); - absl::TimeConversion tc = ConvertDateTime(2013, 12, 31, 23, 59, 59 + 1, utc); - EXPECT_TRUE(tc.normalized); - EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind); - absl::Time::Breakdown bd = tc.pre.In(utc); - ABSL_INTERNAL_EXPECT_TIME(bd, 2014, 1, 1, 0, 0, 0, 0, false); -} - -TEST(TimeNormCase, MultipleUnderflow) { - const absl::TimeZone utc = absl::UTCTimeZone(); - absl::TimeConversion tc = absl::ConvertDateTime(2014, 1, 1, 0, 0, 0 - 1, utc); - EXPECT_TRUE(tc.normalized); - EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind); - absl::Time::Breakdown bd = tc.pre.In(utc); - ABSL_INTERNAL_EXPECT_TIME(bd, 2013, 12, 31, 23, 59, 59, 0, false); -} - -TEST(TimeNormCase, OverflowLimits) { - const absl::TimeZone utc = absl::UTCTimeZone(); - absl::TimeConversion tc; - absl::Time::Breakdown bd; - - const int kintmax = std::numeric_limits<int>::max(); - tc = absl::ConvertDateTime(0, kintmax, kintmax, kintmax, kintmax, kintmax, - utc); - EXPECT_TRUE(tc.normalized); - EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind); - bd = tc.pre.In(utc); - ABSL_INTERNAL_EXPECT_TIME(bd, 185085715, 11, 27, 12, 21, 7, 0, false); - - const int kintmin = std::numeric_limits<int>::min(); - tc = absl::ConvertDateTime(0, kintmin, kintmin, kintmin, kintmin, kintmin, - utc); - EXPECT_TRUE(tc.normalized); - EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind); - bd = tc.pre.In(utc); - ABSL_INTERNAL_EXPECT_TIME(bd, -185085717, 10, 31, 10, 37, 52, 0, false); - - const int64_t max_year = std::numeric_limits<int64_t>::max(); - tc = absl::ConvertDateTime(max_year, 12, 31, 23, 59, 59, utc); - EXPECT_TRUE(tc.normalized); - EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind); - EXPECT_EQ(absl::InfiniteFuture(), tc.pre); - - const int64_t min_year = std::numeric_limits<int64_t>::min(); - tc = absl::ConvertDateTime(min_year, 1, 1, 0, 0, 0, utc); - EXPECT_TRUE(tc.normalized); - EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind); - EXPECT_EQ(absl::InfinitePast(), tc.pre); -} - -TEST(TimeNormCase, ComplexOverflow) { - const absl::TimeZone utc = absl::UTCTimeZone(); - - absl::TimeConversion tc = - ConvertDateTime(2013, 11, 15, 16, 32, 14 + 123456789, utc); - EXPECT_TRUE(tc.normalized); - EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind); - absl::Time::Breakdown bd = tc.pre.In(utc); - ABSL_INTERNAL_EXPECT_TIME(bd, 2017, 10, 14, 14, 5, 23, 0, false); - - tc = absl::ConvertDateTime(2013, 11, 15, 16, 32 + 1234567, 14, utc); - EXPECT_TRUE(tc.normalized); - EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind); - bd = tc.pre.In(utc); - ABSL_INTERNAL_EXPECT_TIME(bd, 2016, 3, 22, 0, 39, 14, 0, false); - - tc = absl::ConvertDateTime(2013, 11, 15, 16 + 123456, 32, 14, utc); - EXPECT_TRUE(tc.normalized); - EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind); - bd = tc.pre.In(utc); - ABSL_INTERNAL_EXPECT_TIME(bd, 2027, 12, 16, 16, 32, 14, 0, false); - - tc = absl::ConvertDateTime(2013, 11, 15 + 1234, 16, 32, 14, utc); - EXPECT_TRUE(tc.normalized); - EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind); - bd = tc.pre.In(utc); - ABSL_INTERNAL_EXPECT_TIME(bd, 2017, 4, 2, 16, 32, 14, 0, false); - - tc = absl::ConvertDateTime(2013, 11 + 123, 15, 16, 32, 14, utc); - EXPECT_TRUE(tc.normalized); - EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind); - bd = tc.pre.In(utc); - ABSL_INTERNAL_EXPECT_TIME(bd, 2024, 2, 15, 16, 32, 14, 0, false); -} - -TEST(TimeNormCase, ComplexUnderflow) { - const absl::TimeZone utc = absl::UTCTimeZone(); - - absl::TimeConversion tc = - absl::ConvertDateTime(1999, 3, 0, 0, 0, 0, utc); // year 400 - EXPECT_TRUE(tc.normalized); - EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind); - absl::Time::Breakdown bd = tc.pre.In(utc); - ABSL_INTERNAL_EXPECT_TIME(bd, 1999, 2, 28, 0, 0, 0, 0, false); - - tc = absl::ConvertDateTime(2013, 11, 15, 16, 32, 14 - 123456789, utc); - EXPECT_TRUE(tc.normalized); - EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind); - bd = tc.pre.In(utc); - ABSL_INTERNAL_EXPECT_TIME(bd, 2009, 12, 17, 18, 59, 5, 0, false); - - tc = absl::ConvertDateTime(2013, 11, 15, 16, 32 - 1234567, 14, utc); - EXPECT_TRUE(tc.normalized); - EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind); - bd = tc.pre.In(utc); - ABSL_INTERNAL_EXPECT_TIME(bd, 2011, 7, 12, 8, 25, 14, 0, false); - - tc = absl::ConvertDateTime(2013, 11, 15, 16 - 123456, 32, 14, utc); - EXPECT_TRUE(tc.normalized); - EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind); - bd = tc.pre.In(utc); - ABSL_INTERNAL_EXPECT_TIME(bd, 1999, 10, 16, 16, 32, 14, 0, false); - - tc = absl::ConvertDateTime(2013, 11, 15 - 1234, 16, 32, 14, utc); - EXPECT_TRUE(tc.normalized); - EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind); - bd = tc.pre.In(utc); - ABSL_INTERNAL_EXPECT_TIME(bd, 2010, 6, 30, 16, 32, 14, 0, false); - - tc = absl::ConvertDateTime(2013, 11 - 123, 15, 16, 32, 14, utc); - EXPECT_TRUE(tc.normalized); - EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind); - bd = tc.pre.In(utc); - ABSL_INTERNAL_EXPECT_TIME(bd, 2003, 8, 15, 16, 32, 14, 0, false); -} - -TEST(TimeNormCase, Mishmash) { - const absl::TimeZone utc = absl::UTCTimeZone(); - - absl::TimeConversion tc = - absl::ConvertDateTime(2013, 11 - 123, 15 + 1234, 16 - 123456, - 32 + 1234567, 14 - 123456789, utc); - EXPECT_TRUE(tc.normalized); - EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind); - absl::Time::Breakdown bd = tc.pre.In(utc); - ABSL_INTERNAL_EXPECT_TIME(bd, 1991, 5, 9, 3, 6, 5, 0, false); - - tc = absl::ConvertDateTime(2013, 11 + 123, 15 - 1234, 16 + 123456, - 32 - 1234567, 14 + 123456789, utc); - EXPECT_TRUE(tc.normalized); - EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind); - bd = tc.pre.In(utc); - ABSL_INTERNAL_EXPECT_TIME(bd, 2036, 5, 24, 5, 58, 23, 0, false); - - // Here is a normalization case we got wrong for a while. Because the - // day is converted to "1" within a 400-year (146097-day) period, we - // didn't need to roll the month and so we didn't mark it as normalized. - tc = absl::ConvertDateTime(2013, 11, -146097 + 1, 16, 32, 14, utc); - EXPECT_TRUE(tc.normalized); - EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind); - bd = tc.pre.In(utc); - ABSL_INTERNAL_EXPECT_TIME(bd, 1613, 11, 1, 16, 32, 14, 0, false); - - // Even though the month overflow compensates for the day underflow, - // this should still be marked as normalized. - tc = absl::ConvertDateTime(2013, 11 + 400 * 12, -146097 + 1, 16, 32, 14, utc); - EXPECT_TRUE(tc.normalized); - EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind); - bd = tc.pre.In(utc); - ABSL_INTERNAL_EXPECT_TIME(bd, 2013, 11, 1, 16, 32, 14, 0, false); -} - -TEST(TimeNormCase, LeapYears) { - const absl::TimeZone utc = absl::UTCTimeZone(); - - absl::TimeConversion tc = - absl::ConvertDateTime(2013, 2, 28 + 1, 0, 0, 0, utc); - EXPECT_TRUE(tc.normalized); - EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind); - absl::Time::Breakdown bd = tc.pre.In(utc); - ABSL_INTERNAL_EXPECT_TIME(bd, 2013, 3, 1, 0, 0, 0, 0, false); - - tc = absl::ConvertDateTime(2012, 2, 28 + 1, 0, 0, 0, utc); - EXPECT_FALSE(tc.normalized); - EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind); - bd = tc.pre.In(utc); - ABSL_INTERNAL_EXPECT_TIME(bd, 2012, 2, 29, 0, 0, 0, 0, false); - - tc = absl::ConvertDateTime(2000, 2, 28 + 1, 0, 0, 0, utc); - EXPECT_FALSE(tc.normalized); - EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind); - bd = tc.pre.In(utc); - ABSL_INTERNAL_EXPECT_TIME(bd, 2000, 2, 29, 0, 0, 0, 0, false); - - tc = absl::ConvertDateTime(1900, 2, 28 + 1, 0, 0, 0, utc); - EXPECT_TRUE(tc.normalized); - EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind); - bd = tc.pre.In(utc); - ABSL_INTERNAL_EXPECT_TIME(bd, 1900, 3, 1, 0, 0, 0, 0, false); -} - -// Convert all the days from 1970-1-1 to 1970-1-146097 (aka 2369-12-31) -// and check that they normalize to the expected time. 146097 days span -// the 400-year Gregorian cycle used during normalization. -TEST(TimeNormCase, AllTheDays) { - const absl::TimeZone utc = absl::UTCTimeZone(); - absl::Time exp_time = absl::UnixEpoch(); - - for (int day = 1; day <= 146097; ++day) { - absl::TimeConversion tc = absl::ConvertDateTime(1970, 1, day, 0, 0, 0, utc); - EXPECT_EQ(day > 31, tc.normalized); - EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind); - EXPECT_EQ(exp_time, tc.pre); - exp_time += absl::Hours(24); - } -} - -} // namespace diff --git a/absl/time/time_test.cc b/absl/time/time_test.cc index 4f8f58a6ef36..feca45873814 100644 --- a/absl/time/time_test.cc +++ b/absl/time/time_test.cc @@ -28,6 +28,27 @@ namespace { +#if GTEST_USES_SIMPLE_RE +const char kZoneAbbrRE[] = ".*"; // just punt +#else +const char kZoneAbbrRE[] = "[A-Za-z]{3,4}|[-+][0-9]{2}([0-9]{2})?"; +#endif + +// This helper is a macro so that failed expectations show up with the +// correct line numbers. +#define EXPECT_CIVIL_INFO(ci, y, m, d, h, min, s, off, isdst) \ + do { \ + EXPECT_EQ(y, ci.cs.year()); \ + EXPECT_EQ(m, ci.cs.month()); \ + EXPECT_EQ(d, ci.cs.day()); \ + EXPECT_EQ(h, ci.cs.hour()); \ + EXPECT_EQ(min, ci.cs.minute()); \ + EXPECT_EQ(s, ci.cs.second()); \ + EXPECT_EQ(off, ci.offset); \ + EXPECT_EQ(isdst, ci.is_dst); \ + EXPECT_THAT(ci.zone_abbr, testing::MatchesRegex(kZoneAbbrRE)); \ + } while (0) + // A gMock matcher to match timespec values. Use this matcher like: // timespec ts1, ts2; // EXPECT_THAT(ts1, TimespecMatcher(ts2)); @@ -84,10 +105,10 @@ TEST(Time, ValueSemantics) { } TEST(Time, UnixEpoch) { - absl::Time::Breakdown bd = absl::UnixEpoch().In(absl::UTCTimeZone()); - ABSL_INTERNAL_EXPECT_TIME(bd, 1970, 1, 1, 0, 0, 0, 0, false); - EXPECT_EQ(absl::ZeroDuration(), bd.subsecond); - EXPECT_EQ(4, bd.weekday); // Thursday + const auto ci = absl::UTCTimeZone().At(absl::UnixEpoch()); + EXPECT_EQ(absl::CivilSecond(1970, 1, 1, 0, 0, 0), ci.cs); + EXPECT_EQ(absl::ZeroDuration(), ci.subsecond); + EXPECT_EQ(absl::Weekday::thursday, absl::GetWeekday(absl::CivilDay(ci.cs))); } TEST(Time, Breakdown) { @@ -95,26 +116,26 @@ TEST(Time, Breakdown) { absl::Time t = absl::UnixEpoch(); // The Unix epoch as seen in NYC. - absl::Time::Breakdown bd = t.In(tz); - ABSL_INTERNAL_EXPECT_TIME(bd, 1969, 12, 31, 19, 0, 0, -18000, false); - EXPECT_EQ(absl::ZeroDuration(), bd.subsecond); - EXPECT_EQ(3, bd.weekday); // Wednesday + auto ci = tz.At(t); + EXPECT_CIVIL_INFO(ci, 1969, 12, 31, 19, 0, 0, -18000, false); + EXPECT_EQ(absl::ZeroDuration(), ci.subsecond); + EXPECT_EQ(absl::Weekday::wednesday, absl::GetWeekday(absl::CivilDay(ci.cs))); // Just before the epoch. t -= absl::Nanoseconds(1); - bd = t.In(tz); - ABSL_INTERNAL_EXPECT_TIME(bd, 1969, 12, 31, 18, 59, 59, -18000, false); - EXPECT_EQ(absl::Nanoseconds(999999999), bd.subsecond); - EXPECT_EQ(3, bd.weekday); // Wednesday + ci = tz.At(t); + EXPECT_CIVIL_INFO(ci, 1969, 12, 31, 18, 59, 59, -18000, false); + EXPECT_EQ(absl::Nanoseconds(999999999), ci.subsecond); + EXPECT_EQ(absl::Weekday::wednesday, absl::GetWeekday(absl::CivilDay(ci.cs))); // Some time later. t += absl::Hours(24) * 2735; t += absl::Hours(18) + absl::Minutes(30) + absl::Seconds(15) + absl::Nanoseconds(9); - bd = t.In(tz); - ABSL_INTERNAL_EXPECT_TIME(bd, 1977, 6, 28, 14, 30, 15, -14400, true); - EXPECT_EQ(8, bd.subsecond / absl::Nanoseconds(1)); - EXPECT_EQ(2, bd.weekday); // Tuesday + ci = tz.At(t); + EXPECT_CIVIL_INFO(ci, 1977, 6, 28, 14, 30, 15, -14400, true); + EXPECT_EQ(8, ci.subsecond / absl::Nanoseconds(1)); + EXPECT_EQ(absl::Weekday::tuesday, absl::GetWeekday(absl::CivilDay(ci.cs))); } TEST(Time, AdditiveOperators) { @@ -550,67 +571,63 @@ TEST(Time, ToChronoTime) { absl::ToChronoTime(absl::UnixEpoch() - tick)); } -TEST(Time, ConvertDateTime) { - const absl::TimeZone utc = absl::UTCTimeZone(); - const absl::TimeZone goog = - absl::time_internal::LoadTimeZone("America/Los_Angeles"); +TEST(Time, TimeZoneAt) { const absl::TimeZone nyc = absl::time_internal::LoadTimeZone("America/New_York"); const std::string fmt = "%a, %e %b %Y %H:%M:%S %z (%Z)"; - // A simple case of normalization. - absl::TimeConversion oct32 = ConvertDateTime(2013, 10, 32, 8, 30, 0, goog); - EXPECT_TRUE(oct32.normalized); - EXPECT_EQ(absl::TimeConversion::UNIQUE, oct32.kind); - absl::TimeConversion nov01 = ConvertDateTime(2013, 11, 1, 8, 30, 0, goog); - EXPECT_FALSE(nov01.normalized); - EXPECT_EQ(absl::TimeConversion::UNIQUE, nov01.kind); - EXPECT_EQ(oct32.pre, nov01.pre); - EXPECT_EQ("Fri, 1 Nov 2013 08:30:00 -0700 (PDT)", - absl::FormatTime(fmt, nov01.pre, goog)); + // A non-transition where the civil time is unique. + absl::CivilSecond nov01(2013, 11, 1, 8, 30, 0); + const auto nov01_ci = nyc.At(nov01); + EXPECT_EQ(absl::TimeZone::TimeInfo::UNIQUE, nov01_ci.kind); + EXPECT_EQ("Fri, 1 Nov 2013 08:30:00 -0400 (EDT)", + absl::FormatTime(fmt, nov01_ci.pre, nyc)); + EXPECT_EQ(nov01_ci.pre, nov01_ci.trans); + EXPECT_EQ(nov01_ci.pre, nov01_ci.post); + EXPECT_EQ(nov01_ci.pre, absl::FromCivil(nov01, nyc)); // A Spring DST transition, when there is a gap in civil time // and we prefer the later of the possible interpretations of a // non-existent time. - absl::TimeConversion mar13 = ConvertDateTime(2011, 3, 13, 2, 15, 0, nyc); - EXPECT_FALSE(mar13.normalized); - EXPECT_EQ(absl::TimeConversion::SKIPPED, mar13.kind); + absl::CivilSecond mar13(2011, 3, 13, 2, 15, 0); + const auto mar_ci = nyc.At(mar13); + EXPECT_EQ(absl::TimeZone::TimeInfo::SKIPPED, mar_ci.kind); EXPECT_EQ("Sun, 13 Mar 2011 03:15:00 -0400 (EDT)", - absl::FormatTime(fmt, mar13.pre, nyc)); + absl::FormatTime(fmt, mar_ci.pre, nyc)); EXPECT_EQ("Sun, 13 Mar 2011 03:00:00 -0400 (EDT)", - absl::FormatTime(fmt, mar13.trans, nyc)); + absl::FormatTime(fmt, mar_ci.trans, nyc)); EXPECT_EQ("Sun, 13 Mar 2011 01:15:00 -0500 (EST)", - absl::FormatTime(fmt, mar13.post, nyc)); - EXPECT_EQ(mar13.pre, absl::FromDateTime(2011, 3, 13, 2, 15, 0, nyc)); + absl::FormatTime(fmt, mar_ci.post, nyc)); + EXPECT_EQ(mar_ci.trans, absl::FromCivil(mar13, nyc)); // A Fall DST transition, when civil times are repeated and // we prefer the earlier of the possible interpretations of an // ambiguous time. - absl::TimeConversion nov06 = ConvertDateTime(2011, 11, 6, 1, 15, 0, nyc); - EXPECT_FALSE(nov06.normalized); - EXPECT_EQ(absl::TimeConversion::REPEATED, nov06.kind); + absl::CivilSecond nov06(2011, 11, 6, 1, 15, 0); + const auto nov06_ci = nyc.At(nov06); + EXPECT_EQ(absl::TimeZone::TimeInfo::REPEATED, nov06_ci.kind); EXPECT_EQ("Sun, 6 Nov 2011 01:15:00 -0400 (EDT)", - absl::FormatTime(fmt, nov06.pre, nyc)); + absl::FormatTime(fmt, nov06_ci.pre, nyc)); EXPECT_EQ("Sun, 6 Nov 2011 01:00:00 -0500 (EST)", - absl::FormatTime(fmt, nov06.trans, nyc)); + absl::FormatTime(fmt, nov06_ci.trans, nyc)); EXPECT_EQ("Sun, 6 Nov 2011 01:15:00 -0500 (EST)", - absl::FormatTime(fmt, nov06.post, nyc)); - EXPECT_EQ(nov06.pre, absl::FromDateTime(2011, 11, 6, 1, 15, 0, nyc)); + absl::FormatTime(fmt, nov06_ci.post, nyc)); + EXPECT_EQ(nov06_ci.pre, absl::FromCivil(nov06, nyc)); // Check that (time_t) -1 is handled correctly. - absl::TimeConversion minus1 = ConvertDateTime(1969, 12, 31, 18, 59, 59, nyc); - EXPECT_FALSE(minus1.normalized); - EXPECT_EQ(absl::TimeConversion::UNIQUE, minus1.kind); - EXPECT_EQ(-1, absl::ToTimeT(minus1.pre)); + absl::CivilSecond minus1(1969, 12, 31, 18, 59, 59); + const auto minus1_cl = nyc.At(minus1); + EXPECT_EQ(absl::TimeZone::TimeInfo::UNIQUE, minus1_cl.kind); + EXPECT_EQ(-1, absl::ToTimeT(minus1_cl.pre)); EXPECT_EQ("Wed, 31 Dec 1969 18:59:59 -0500 (EST)", - absl::FormatTime(fmt, minus1.pre, nyc)); + absl::FormatTime(fmt, minus1_cl.pre, nyc)); EXPECT_EQ("Wed, 31 Dec 1969 23:59:59 +0000 (UTC)", - absl::FormatTime(fmt, minus1.pre, utc)); + absl::FormatTime(fmt, minus1_cl.pre, absl::UTCTimeZone())); } -// FromDateTime(year, mon, day, hour, min, sec, UTCTimeZone()) has -// a specialized fastpath implementation which we exercise here. -TEST(Time, FromDateTimeUTC) { +// FromCivil(CivilSecond(year, mon, day, hour, min, sec), UTCTimeZone()) +// has a specialized fastpath implementation, which we exercise here. +TEST(Time, FromCivilUTC) { const absl::TimeZone utc = absl::UTCTimeZone(); const std::string fmt = "%a, %e %b %Y %H:%M:%S %z (%Z)"; const int kMax = std::numeric_limits<int>::max(); @@ -618,65 +635,36 @@ TEST(Time, FromDateTimeUTC) { absl::Time t; // 292091940881 is the last positive year to use the fastpath. - t = absl::FromDateTime(292091940881, kMax, kMax, kMax, kMax, kMax, utc); + t = absl::FromCivil( + absl::CivilSecond(292091940881, kMax, kMax, kMax, kMax, kMax), utc); EXPECT_EQ("Fri, 25 Nov 292277026596 12:21:07 +0000 (UTC)", absl::FormatTime(fmt, t, utc)); - t = absl::FromDateTime(292091940882, kMax, kMax, kMax, kMax, kMax, utc); - EXPECT_EQ("infinite-future", absl::FormatTime(fmt, t, utc)); // no overflow - t = absl::FromDateTime( - std::numeric_limits<int64_t>::max(), kMax, kMax, kMax, kMax, kMax, utc); + t = absl::FromCivil( + absl::CivilSecond(292091940882, kMax, kMax, kMax, kMax, kMax), utc); EXPECT_EQ("infinite-future", absl::FormatTime(fmt, t, utc)); // no overflow // -292091936940 is the last negative year to use the fastpath. - t = absl::FromDateTime(-292091936940, kMin, kMin, kMin, kMin, kMin, utc); + t = absl::FromCivil( + absl::CivilSecond(-292091936940, kMin, kMin, kMin, kMin, kMin), utc); EXPECT_EQ("Fri, 1 Nov -292277022657 10:37:52 +0000 (UTC)", absl::FormatTime(fmt, t, utc)); - t = absl::FromDateTime(-292091936941, kMin, kMin, kMin, kMin, kMin, utc); + t = absl::FromCivil( + absl::CivilSecond(-292091936941, kMin, kMin, kMin, kMin, kMin), utc); EXPECT_EQ("infinite-past", absl::FormatTime(fmt, t, utc)); // no underflow - t = absl::FromDateTime( - std::numeric_limits<int64_t>::min(), kMin, kMin, kMin, kMin, kMin, utc); - EXPECT_EQ("infinite-past", absl::FormatTime(fmt, t, utc)); // no overflow // Check that we're counting leap years correctly. - t = absl::FromDateTime(1900, 2, 28, 23, 59, 59, utc); + t = absl::FromCivil(absl::CivilSecond(1900, 2, 28, 23, 59, 59), utc); EXPECT_EQ("Wed, 28 Feb 1900 23:59:59 +0000 (UTC)", absl::FormatTime(fmt, t, utc)); - t = absl::FromDateTime(1900, 3, 1, 0, 0, 0, utc); + t = absl::FromCivil(absl::CivilSecond(1900, 3, 1, 0, 0, 0), utc); EXPECT_EQ("Thu, 1 Mar 1900 00:00:00 +0000 (UTC)", absl::FormatTime(fmt, t, utc)); - t = absl::FromDateTime(2000, 2, 29, 23, 59, 59, utc); + t = absl::FromCivil(absl::CivilSecond(2000, 2, 29, 23, 59, 59), utc); EXPECT_EQ("Tue, 29 Feb 2000 23:59:59 +0000 (UTC)", absl::FormatTime(fmt, t, utc)); - t = absl::FromDateTime(2000, 3, 1, 0, 0, 0, utc); + t = absl::FromCivil(absl::CivilSecond(2000, 3, 1, 0, 0, 0), utc); EXPECT_EQ("Wed, 1 Mar 2000 00:00:00 +0000 (UTC)", absl::FormatTime(fmt, t, utc)); - - // Check normalization. - const std::string ymdhms = "%Y-%m-%d %H:%M:%S"; - t = absl::FromDateTime(2015, 1, 1, 0, 0, 60, utc); - EXPECT_EQ("2015-01-01 00:01:00", absl::FormatTime(ymdhms, t, utc)); - t = absl::FromDateTime(2015, 1, 1, 0, 60, 0, utc); - EXPECT_EQ("2015-01-01 01:00:00", absl::FormatTime(ymdhms, t, utc)); - t = absl::FromDateTime(2015, 1, 1, 24, 0, 0, utc); - EXPECT_EQ("2015-01-02 00:00:00", absl::FormatTime(ymdhms, t, utc)); - t = absl::FromDateTime(2015, 1, 32, 0, 0, 0, utc); - EXPECT_EQ("2015-02-01 00:00:00", absl::FormatTime(ymdhms, t, utc)); - t = absl::FromDateTime(2015, 13, 1, 0, 0, 0, utc); - EXPECT_EQ("2016-01-01 00:00:00", absl::FormatTime(ymdhms, t, utc)); - t = absl::FromDateTime(2015, 13, 32, 60, 60, 60, utc); - EXPECT_EQ("2016-02-03 13:01:00", absl::FormatTime(ymdhms, t, utc)); - t = absl::FromDateTime(2015, 1, 1, 0, 0, -1, utc); - EXPECT_EQ("2014-12-31 23:59:59", absl::FormatTime(ymdhms, t, utc)); - t = absl::FromDateTime(2015, 1, 1, 0, -1, 0, utc); - EXPECT_EQ("2014-12-31 23:59:00", absl::FormatTime(ymdhms, t, utc)); - t = absl::FromDateTime(2015, 1, 1, -1, 0, 0, utc); - EXPECT_EQ("2014-12-31 23:00:00", absl::FormatTime(ymdhms, t, utc)); - t = absl::FromDateTime(2015, 1, -1, 0, 0, 0, utc); - EXPECT_EQ("2014-12-30 00:00:00", absl::FormatTime(ymdhms, t, utc)); - t = absl::FromDateTime(2015, -1, 1, 0, 0, 0, utc); - EXPECT_EQ("2014-11-01 00:00:00", absl::FormatTime(ymdhms, t, utc)); - t = absl::FromDateTime(2015, -1, -1, -1, -1, -1, utc); - EXPECT_EQ("2014-10-29 22:58:59", absl::FormatTime(ymdhms, t, utc)); } TEST(Time, ToTM) { @@ -684,8 +672,10 @@ TEST(Time, ToTM) { // Compares the results of ToTM() to gmtime_r() for lots of times over the // course of a few days. - const absl::Time start = absl::FromDateTime(2014, 1, 2, 3, 4, 5, utc); - const absl::Time end = absl::FromDateTime(2014, 1, 5, 3, 4, 5, utc); + const absl::Time start = + absl::FromCivil(absl::CivilSecond(2014, 1, 2, 3, 4, 5), utc); + const absl::Time end = + absl::FromCivil(absl::CivilSecond(2014, 1, 5, 3, 4, 5), utc); for (absl::Time t = start; t < end; t += absl::Seconds(30)) { const struct tm tm_bt = ToTM(t, utc); const time_t tt = absl::ToTimeT(t); @@ -711,12 +701,12 @@ TEST(Time, ToTM) { // Checks that the tm_isdst field is correct when in standard time. const absl::TimeZone nyc = absl::time_internal::LoadTimeZone("America/New_York"); - absl::Time t = absl::FromDateTime(2014, 3, 1, 0, 0, 0, nyc); + absl::Time t = absl::FromCivil(absl::CivilSecond(2014, 3, 1, 0, 0, 0), nyc); struct tm tm = ToTM(t, nyc); EXPECT_FALSE(tm.tm_isdst); // Checks that the tm_isdst field is correct when in daylight time. - t = absl::FromDateTime(2014, 4, 1, 0, 0, 0, nyc); + t = absl::FromCivil(absl::CivilSecond(2014, 4, 1, 0, 0, 0), nyc); tm = ToTM(t, nyc); EXPECT_TRUE(tm.tm_isdst); @@ -808,8 +798,8 @@ TEST(Time, TMRoundTrip) { absl::time_internal::LoadTimeZone("America/New_York"); // Test round-tripping across a skipped transition - absl::Time start = absl::FromDateTime(2014, 3, 9, 0, 0, 0, nyc); - absl::Time end = absl::FromDateTime(2014, 3, 9, 4, 0, 0, nyc); + absl::Time start = absl::FromCivil(absl::CivilHour(2014, 3, 9, 0), nyc); + absl::Time end = absl::FromCivil(absl::CivilHour(2014, 3, 9, 4), nyc); for (absl::Time t = start; t < end; t += absl::Minutes(1)) { struct tm tm = ToTM(t, nyc); absl::Time rt = FromTM(tm, nyc); @@ -817,8 +807,8 @@ TEST(Time, TMRoundTrip) { } // Test round-tripping across an ambiguous transition - start = absl::FromDateTime(2014, 11, 2, 0, 0, 0, nyc); - end = absl::FromDateTime(2014, 11, 2, 4, 0, 0, nyc); + start = absl::FromCivil(absl::CivilHour(2014, 11, 2, 0), nyc); + end = absl::FromCivil(absl::CivilHour(2014, 11, 2, 4), nyc); for (absl::Time t = start; t < end; t += absl::Minutes(1)) { struct tm tm = ToTM(t, nyc); absl::Time rt = FromTM(tm, nyc); @@ -826,8 +816,8 @@ TEST(Time, TMRoundTrip) { } // Test round-tripping of unique instants crossing a day boundary - start = absl::FromDateTime(2014, 6, 27, 22, 0, 0, nyc); - end = absl::FromDateTime(2014, 6, 28, 4, 0, 0, nyc); + start = absl::FromCivil(absl::CivilHour(2014, 6, 27, 22), nyc); + end = absl::FromCivil(absl::CivilHour(2014, 6, 28, 4), nyc); for (absl::Time t = start; t < end; t += absl::Minutes(1)) { struct tm tm = ToTM(t, nyc); absl::Time rt = FromTM(tm, nyc); @@ -980,27 +970,27 @@ TEST(Time, ConversionSaturation) { EXPECT_EQ(min_timespec_sec, ts.tv_sec); EXPECT_EQ(0, ts.tv_nsec); - // Checks how Time::In() saturates on infinities. - absl::Time::Breakdown bd = absl::InfiniteFuture().In(utc); - ABSL_INTERNAL_EXPECT_TIME(bd, std::numeric_limits<int64_t>::max(), 12, 31, 23, + // Checks how TimeZone::At() saturates on infinities. + auto ci = utc.At(absl::InfiniteFuture()); + EXPECT_CIVIL_INFO(ci, std::numeric_limits<int64_t>::max(), 12, 31, 23, 59, 59, 0, false); - EXPECT_EQ(absl::InfiniteDuration(), bd.subsecond); - EXPECT_EQ(4, bd.weekday); // Thursday - EXPECT_EQ(365, bd.yearday); - EXPECT_STREQ("-00", bd.zone_abbr); // artifact of absl::Time::In() - bd = absl::InfinitePast().In(utc); - ABSL_INTERNAL_EXPECT_TIME(bd, std::numeric_limits<int64_t>::min(), 1, 1, 0, 0, + EXPECT_EQ(absl::InfiniteDuration(), ci.subsecond); + EXPECT_EQ(absl::Weekday::thursday, absl::GetWeekday(absl::CivilDay(ci.cs))); + EXPECT_EQ(365, absl::GetYearDay(absl::CivilDay(ci.cs))); + EXPECT_STREQ("-00", ci.zone_abbr); // artifact of TimeZone::At() + ci = utc.At(absl::InfinitePast()); + EXPECT_CIVIL_INFO(ci, std::numeric_limits<int64_t>::min(), 1, 1, 0, 0, 0, 0, false); - EXPECT_EQ(-absl::InfiniteDuration(), bd.subsecond); - EXPECT_EQ(7, bd.weekday); // Sunday - EXPECT_EQ(1, bd.yearday); - EXPECT_STREQ("-00", bd.zone_abbr); // artifact of absl::Time::In() + EXPECT_EQ(-absl::InfiniteDuration(), ci.subsecond); + EXPECT_EQ(absl::Weekday::sunday, absl::GetWeekday(absl::CivilDay(ci.cs))); + EXPECT_EQ(1, absl::GetYearDay(absl::CivilDay(ci.cs))); + EXPECT_STREQ("-00", ci.zone_abbr); // artifact of TimeZone::At() // Approach the maximal Time value from below. - t = absl::FromDateTime(292277026596, 12, 4, 15, 30, 6, utc); + t = absl::FromCivil(absl::CivilSecond(292277026596, 12, 4, 15, 30, 6), utc); EXPECT_EQ("292277026596-12-04T15:30:06+00:00", absl::FormatTime(absl::RFC3339_full, t, utc)); - t = absl::FromDateTime(292277026596, 12, 4, 15, 30, 7, utc); + t = absl::FromCivil(absl::CivilSecond(292277026596, 12, 4, 15, 30, 7), utc); EXPECT_EQ("292277026596-12-04T15:30:07+00:00", absl::FormatTime(absl::RFC3339_full, t, utc)); EXPECT_EQ( @@ -1008,21 +998,21 @@ TEST(Time, ConversionSaturation) { // Checks that we can also get the maximal Time value for a far-east zone. const absl::TimeZone plus14 = absl::FixedTimeZone(14 * 60 * 60); - t = absl::FromDateTime(292277026596, 12, 5, 5, 30, 7, plus14); + t = absl::FromCivil(absl::CivilSecond(292277026596, 12, 5, 5, 30, 7), plus14); EXPECT_EQ("292277026596-12-05T05:30:07+14:00", absl::FormatTime(absl::RFC3339_full, t, plus14)); EXPECT_EQ( absl::UnixEpoch() + absl::Seconds(std::numeric_limits<int64_t>::max()), t); // One second later should push us to infinity. - t = absl::FromDateTime(292277026596, 12, 4, 15, 30, 8, utc); + t = absl::FromCivil(absl::CivilSecond(292277026596, 12, 4, 15, 30, 8), utc); EXPECT_EQ("infinite-future", absl::FormatTime(absl::RFC3339_full, t, utc)); // Approach the minimal Time value from above. - t = absl::FromDateTime(-292277022657, 1, 27, 8, 29, 53, utc); + t = absl::FromCivil(absl::CivilSecond(-292277022657, 1, 27, 8, 29, 53), utc); EXPECT_EQ("-292277022657-01-27T08:29:53+00:00", absl::FormatTime(absl::RFC3339_full, t, utc)); - t = absl::FromDateTime(-292277022657, 1, 27, 8, 29, 52, utc); + t = absl::FromCivil(absl::CivilSecond(-292277022657, 1, 27, 8, 29, 52), utc); EXPECT_EQ("-292277022657-01-27T08:29:52+00:00", absl::FormatTime(absl::RFC3339_full, t, utc)); EXPECT_EQ( @@ -1030,14 +1020,15 @@ TEST(Time, ConversionSaturation) { // Checks that we can also get the minimal Time value for a far-west zone. const absl::TimeZone minus12 = absl::FixedTimeZone(-12 * 60 * 60); - t = absl::FromDateTime(-292277022657, 1, 26, 20, 29, 52, minus12); + t = absl::FromCivil(absl::CivilSecond(-292277022657, 1, 26, 20, 29, 52), + minus12); EXPECT_EQ("-292277022657-01-26T20:29:52-12:00", absl::FormatTime(absl::RFC3339_full, t, minus12)); EXPECT_EQ( absl::UnixEpoch() + absl::Seconds(std::numeric_limits<int64_t>::min()), t); // One second before should push us to -infinity. - t = absl::FromDateTime(-292277022657, 1, 27, 8, 29, 51, utc); + t = absl::FromCivil(absl::CivilSecond(-292277022657, 1, 27, 8, 29, 51), utc); EXPECT_EQ("infinite-past", absl::FormatTime(absl::RFC3339_full, t, utc)); } @@ -1051,38 +1042,97 @@ TEST(Time, ExtendedConversionSaturation) { absl::time_internal::LoadTimeZone("America/New_York"); const absl::Time max = absl::FromUnixSeconds(std::numeric_limits<int64_t>::max()); - absl::Time::Breakdown bd; + absl::TimeZone::CivilInfo ci; absl::Time t; // The maximal time converted in each zone. - bd = max.In(syd); - ABSL_INTERNAL_EXPECT_TIME(bd, 292277026596, 12, 5, 2, 30, 7, 39600, true); - t = absl::FromDateTime(292277026596, 12, 5, 2, 30, 7, syd); + ci = syd.At(max); + EXPECT_CIVIL_INFO(ci, 292277026596, 12, 5, 2, 30, 7, 39600, true); + t = absl::FromCivil(absl::CivilSecond(292277026596, 12, 5, 2, 30, 7), syd); EXPECT_EQ(max, t); - bd = max.In(nyc); - ABSL_INTERNAL_EXPECT_TIME(bd, 292277026596, 12, 4, 10, 30, 7, -18000, false); - t = absl::FromDateTime(292277026596, 12, 4, 10, 30, 7, nyc); + ci = nyc.At(max); + EXPECT_CIVIL_INFO(ci, 292277026596, 12, 4, 10, 30, 7, -18000, false); + t = absl::FromCivil(absl::CivilSecond(292277026596, 12, 4, 10, 30, 7), nyc); EXPECT_EQ(max, t); // One second later should push us to infinity. - t = absl::FromDateTime(292277026596, 12, 5, 2, 30, 8, syd); + t = absl::FromCivil(absl::CivilSecond(292277026596, 12, 5, 2, 30, 8), syd); EXPECT_EQ(absl::InfiniteFuture(), t); - t = absl::FromDateTime(292277026596, 12, 4, 10, 30, 8, nyc); + t = absl::FromCivil(absl::CivilSecond(292277026596, 12, 4, 10, 30, 8), nyc); EXPECT_EQ(absl::InfiniteFuture(), t); // And we should stick there. - t = absl::FromDateTime(292277026596, 12, 5, 2, 30, 9, syd); + t = absl::FromCivil(absl::CivilSecond(292277026596, 12, 5, 2, 30, 9), syd); EXPECT_EQ(absl::InfiniteFuture(), t); - t = absl::FromDateTime(292277026596, 12, 4, 10, 30, 9, nyc); + t = absl::FromCivil(absl::CivilSecond(292277026596, 12, 4, 10, 30, 9), nyc); EXPECT_EQ(absl::InfiniteFuture(), t); // All the way up to a saturated date/time, without overflow. - t = absl::FromDateTime( - std::numeric_limits<int64_t>::max(), 12, 31, 23, 59, 59, syd); + t = absl::FromCivil(absl::CivilSecond::max(), syd); EXPECT_EQ(absl::InfiniteFuture(), t); - t = absl::FromDateTime( - std::numeric_limits<int64_t>::max(), 12, 31, 23, 59, 59, nyc); + t = absl::FromCivil(absl::CivilSecond::max(), nyc); EXPECT_EQ(absl::InfiniteFuture(), t); } +TEST(Time, FromCivilAlignment) { + const absl::TimeZone utc = absl::UTCTimeZone(); + const absl::CivilSecond cs(2015, 2, 3, 4, 5, 6); + absl::Time t = absl::FromCivil(cs, utc); + EXPECT_EQ("2015-02-03T04:05:06+00:00", absl::FormatTime(t, utc)); + t = absl::FromCivil(absl::CivilMinute(cs), utc); + EXPECT_EQ("2015-02-03T04:05:00+00:00", absl::FormatTime(t, utc)); + t = absl::FromCivil(absl::CivilHour(cs), utc); + EXPECT_EQ("2015-02-03T04:00:00+00:00", absl::FormatTime(t, utc)); + t = absl::FromCivil(absl::CivilDay(cs), utc); + EXPECT_EQ("2015-02-03T00:00:00+00:00", absl::FormatTime(t, utc)); + t = absl::FromCivil(absl::CivilMonth(cs), utc); + EXPECT_EQ("2015-02-01T00:00:00+00:00", absl::FormatTime(t, utc)); + t = absl::FromCivil(absl::CivilYear(cs), utc); + EXPECT_EQ("2015-01-01T00:00:00+00:00", absl::FormatTime(t, utc)); +} + +TEST(Time, LegacyDateTime) { + const absl::TimeZone utc = absl::UTCTimeZone(); + const std::string ymdhms = "%Y-%m-%d %H:%M:%S"; + const int kMax = std::numeric_limits<int>::max(); + const int kMin = std::numeric_limits<int>::min(); + absl::Time t; + + t = absl::FromDateTime(std::numeric_limits<absl::civil_year_t>::max(), + kMax, kMax, kMax, kMax, kMax, utc); + EXPECT_EQ("infinite-future", + absl::FormatTime(ymdhms, t, utc)); // no overflow + t = absl::FromDateTime(std::numeric_limits<absl::civil_year_t>::min(), + kMin, kMin, kMin, kMin, kMin, utc); + EXPECT_EQ("infinite-past", + absl::FormatTime(ymdhms, t, utc)); // no overflow + + // Check normalization. + EXPECT_TRUE(absl::ConvertDateTime(2013, 10, 32, 8, 30, 0, utc).normalized); + t = absl::FromDateTime(2015, 1, 1, 0, 0, 60, utc); + EXPECT_EQ("2015-01-01 00:01:00", absl::FormatTime(ymdhms, t, utc)); + t = absl::FromDateTime(2015, 1, 1, 0, 60, 0, utc); + EXPECT_EQ("2015-01-01 01:00:00", absl::FormatTime(ymdhms, t, utc)); + t = absl::FromDateTime(2015, 1, 1, 24, 0, 0, utc); + EXPECT_EQ("2015-01-02 00:00:00", absl::FormatTime(ymdhms, t, utc)); + t = absl::FromDateTime(2015, 1, 32, 0, 0, 0, utc); + EXPECT_EQ("2015-02-01 00:00:00", absl::FormatTime(ymdhms, t, utc)); + t = absl::FromDateTime(2015, 13, 1, 0, 0, 0, utc); + EXPECT_EQ("2016-01-01 00:00:00", absl::FormatTime(ymdhms, t, utc)); + t = absl::FromDateTime(2015, 13, 32, 60, 60, 60, utc); + EXPECT_EQ("2016-02-03 13:01:00", absl::FormatTime(ymdhms, t, utc)); + t = absl::FromDateTime(2015, 1, 1, 0, 0, -1, utc); + EXPECT_EQ("2014-12-31 23:59:59", absl::FormatTime(ymdhms, t, utc)); + t = absl::FromDateTime(2015, 1, 1, 0, -1, 0, utc); + EXPECT_EQ("2014-12-31 23:59:00", absl::FormatTime(ymdhms, t, utc)); + t = absl::FromDateTime(2015, 1, 1, -1, 0, 0, utc); + EXPECT_EQ("2014-12-31 23:00:00", absl::FormatTime(ymdhms, t, utc)); + t = absl::FromDateTime(2015, 1, -1, 0, 0, 0, utc); + EXPECT_EQ("2014-12-30 00:00:00", absl::FormatTime(ymdhms, t, utc)); + t = absl::FromDateTime(2015, -1, 1, 0, 0, 0, utc); + EXPECT_EQ("2014-11-01 00:00:00", absl::FormatTime(ymdhms, t, utc)); + t = absl::FromDateTime(2015, -1, -1, -1, -1, -1, utc); + EXPECT_EQ("2014-10-29 22:58:59", absl::FormatTime(ymdhms, t, utc)); +} + } // namespace |