Index: third_party/protobuf/csharp/src/Google.Protobuf/WellKnownTypes/TimestampPartial.cs |
diff --git a/third_party/protobuf/csharp/src/Google.Protobuf/WellKnownTypes/TimestampPartial.cs b/third_party/protobuf/csharp/src/Google.Protobuf/WellKnownTypes/TimestampPartial.cs |
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+++ b/third_party/protobuf/csharp/src/Google.Protobuf/WellKnownTypes/TimestampPartial.cs |
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+#region Copyright notice and license |
+// Protocol Buffers - Google's data interchange format |
+// Copyright 2015 Google Inc. All rights reserved. |
+// https://developers.google.com/protocol-buffers/ |
+// |
+// Redistribution and use in source and binary forms, with or without |
+// modification, are permitted provided that the following conditions are |
+// met: |
+// |
+// * Redistributions of source code must retain the above copyright |
+// notice, this list of conditions and the following disclaimer. |
+// * Redistributions in binary form must reproduce the above |
+// copyright notice, this list of conditions and the following disclaimer |
+// in the documentation and/or other materials provided with the |
+// distribution. |
+// * Neither the name of Google Inc. nor the names of its |
+// contributors may be used to endorse or promote products derived from |
+// this software without specific prior written permission. |
+// |
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
+#endregion |
+ |
+using System; |
+ |
+namespace Google.Protobuf.WellKnownTypes |
+{ |
+ public partial class Timestamp |
+ { |
+ private static readonly DateTime UnixEpoch = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc); |
+ private static readonly long BclSecondsAtUnixEpoch = UnixEpoch.Ticks / TimeSpan.TicksPerSecond; |
+ internal static readonly long UnixSecondsAtBclMinValue = -BclSecondsAtUnixEpoch; |
+ internal static readonly long UnixSecondsAtBclMaxValue = (DateTime.MaxValue.Ticks / TimeSpan.TicksPerSecond) - BclSecondsAtUnixEpoch; |
+ |
+ /// <summary> |
+ /// Returns the difference between one <see cref="Timestamp"/> and another, as a <see cref="Duration"/>. |
+ /// </summary> |
+ /// <param name="lhs">The timestamp to subtract from. Must not be null.</param> |
+ /// <param name="rhs">The timestamp to subtract. Must not be null.</param> |
+ /// <returns>The difference between the two specified timestamps.</returns> |
+ public static Duration operator -(Timestamp lhs, Timestamp rhs) |
+ { |
+ Preconditions.CheckNotNull(lhs, "lhs"); |
+ Preconditions.CheckNotNull(rhs, "rhs"); |
+ checked |
+ { |
+ return Duration.Normalize(lhs.Seconds - rhs.Seconds, lhs.Nanos - rhs.Nanos); |
+ } |
+ } |
+ |
+ /// <summary> |
+ /// Adds a <see cref="Duration"/> to a <see cref="Timestamp"/>, to obtain another <c>Timestamp</c>. |
+ /// </summary> |
+ /// <param name="lhs">The timestamp to add the duration to. Must not be null.</param> |
+ /// <param name="rhs">The duration to add. Must not be null.</param> |
+ /// <returns>The result of adding the duration to the timestamp.</returns> |
+ public static Timestamp operator +(Timestamp lhs, Duration rhs) |
+ { |
+ Preconditions.CheckNotNull(lhs, "lhs"); |
+ Preconditions.CheckNotNull(rhs, "rhs"); |
+ checked |
+ { |
+ return Normalize(lhs.Seconds + rhs.Seconds, lhs.Nanos + rhs.Nanos); |
+ } |
+ } |
+ |
+ /// <summary> |
+ /// Subtracts a <see cref="Duration"/> from a <see cref="Timestamp"/>, to obtain another <c>Timestamp</c>. |
+ /// </summary> |
+ /// <param name="lhs">The timestamp to subtract the duration from. Must not be null.</param> |
+ /// <param name="rhs">The duration to subtract.</param> |
+ /// <returns>The result of subtracting the duration from the timestamp.</returns> |
+ public static Timestamp operator -(Timestamp lhs, Duration rhs) |
+ { |
+ Preconditions.CheckNotNull(lhs, "lhs"); |
+ Preconditions.CheckNotNull(rhs, "rhs"); |
+ checked |
+ { |
+ return Normalize(lhs.Seconds - rhs.Seconds, lhs.Nanos - rhs.Nanos); |
+ } |
+ } |
+ |
+ /// <summary> |
+ /// Converts this timestamp into a <see cref="DateTime"/>. |
+ /// </summary> |
+ /// <remarks> |
+ /// The resulting <c>DateTime</c> will always have a <c>Kind</c> of <c>Utc</c>. |
+ /// If the timestamp is not a precise number of ticks, it will be truncated towards the start |
+ /// of time. For example, a timestamp with a <see cref="Nanos"/> value of 99 will result in a |
+ /// <see cref="DateTime"/> value precisely on a second. |
+ /// </remarks> |
+ /// <returns>This timestamp as a <c>DateTime</c>.</returns> |
+ public DateTime ToDateTime() |
+ { |
+ return UnixEpoch.AddSeconds(Seconds).AddTicks(Nanos / Duration.NanosecondsPerTick); |
+ } |
+ |
+ /// <summary> |
+ /// Converts this timestamp into a <see cref="DateTimeOffset"/>. |
+ /// </summary> |
+ /// <remarks> |
+ /// The resulting <c>DateTimeOffset</c> will always have an <c>Offset</c> of zero. |
+ /// If the timestamp is not a precise number of ticks, it will be truncated towards the start |
+ /// of time. For example, a timestamp with a <see cref="Nanos"/> value of 99 will result in a |
+ /// <see cref="DateTimeOffset"/> value precisely on a second. |
+ /// </remarks> |
+ /// <returns>This timestamp as a <c>DateTimeOffset</c>.</returns> |
+ public DateTimeOffset ToDateTimeOffset() |
+ { |
+ return new DateTimeOffset(ToDateTime(), TimeSpan.Zero); |
+ } |
+ |
+ /// <summary> |
+ /// Converts the specified <see cref="DateTime"/> to a <see cref="Timestamp"/>. |
+ /// </summary> |
+ /// <param name="dateTime"></param> |
+ /// <exception cref="ArgumentException">The <c>Kind</c> of <paramref name="dateTime"/> is not <c>DateTimeKind.Utc</c>.</exception> |
+ /// <returns>The converted timestamp.</returns> |
+ public static Timestamp FromDateTime(DateTime dateTime) |
+ { |
+ if (dateTime.Kind != DateTimeKind.Utc) |
+ { |
+ throw new ArgumentException("Conversion from DateTime to Timestamp requires the DateTime kind to be Utc", "dateTime"); |
+ } |
+ // Do the arithmetic using DateTime.Ticks, which is always non-negative, making things simpler. |
+ long secondsSinceBclEpoch = dateTime.Ticks / TimeSpan.TicksPerSecond; |
+ int nanoseconds = (int) (dateTime.Ticks % TimeSpan.TicksPerSecond) * Duration.NanosecondsPerTick; |
+ return new Timestamp { Seconds = secondsSinceBclEpoch - BclSecondsAtUnixEpoch, Nanos = nanoseconds }; |
+ } |
+ |
+ /// <summary> |
+ /// Converts the given <see cref="DateTimeOffset"/> to a <see cref="Timestamp"/> |
+ /// </summary> |
+ /// <remarks>The offset is taken into consideration when converting the value (so the same instant in time |
+ /// is represented) but is not a separate part of the resulting value. In other words, there is no |
+ /// roundtrip operation to retrieve the original <c>DateTimeOffset</c>.</remarks> |
+ /// <param name="dateTimeOffset">The date and time (with UTC offset) to convert to a timestamp.</param> |
+ /// <returns>The converted timestamp.</returns> |
+ public static Timestamp FromDateTimeOffset(DateTimeOffset dateTimeOffset) |
+ { |
+ // We don't need to worry about this having negative ticks: DateTimeOffset is constrained to handle |
+ // values whose *UTC* value is in the range of DateTime. |
+ return FromDateTime(dateTimeOffset.UtcDateTime); |
+ } |
+ |
+ internal static Timestamp Normalize(long seconds, int nanoseconds) |
+ { |
+ int extraSeconds = nanoseconds / Duration.NanosecondsPerSecond; |
+ seconds += extraSeconds; |
+ nanoseconds -= extraSeconds * Duration.NanosecondsPerSecond; |
+ |
+ if (nanoseconds < 0) |
+ { |
+ nanoseconds += Duration.NanosecondsPerSecond; |
+ seconds--; |
+ } |
+ return new Timestamp { Seconds = seconds, Nanos = nanoseconds }; |
+ } |
+ } |
+} |