mirror of
https://github.com/musix-org/musix-oss
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117 lines
4.8 KiB
Protocol Buffer
117 lines
4.8 KiB
Protocol Buffer
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// Protocol Buffers - Google's data interchange format
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// Copyright 2008 Google Inc. All rights reserved.
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// https://developers.google.com/protocol-buffers/
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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syntax = "proto3";
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package google.protobuf;
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option csharp_namespace = "Google.Protobuf.WellKnownTypes";
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option cc_enable_arenas = true;
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option go_package = "github.com/golang/protobuf/ptypes/duration";
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option java_package = "com.google.protobuf";
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option java_outer_classname = "DurationProto";
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option java_multiple_files = true;
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option objc_class_prefix = "GPB";
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// A Duration represents a signed, fixed-length span of time represented
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// as a count of seconds and fractions of seconds at nanosecond
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// resolution. It is independent of any calendar and concepts like "day"
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// or "month". It is related to Timestamp in that the difference between
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// two Timestamp values is a Duration and it can be added or subtracted
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// from a Timestamp. Range is approximately +-10,000 years.
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//
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// # Examples
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//
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// Example 1: Compute Duration from two Timestamps in pseudo code.
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//
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// Timestamp start = ...;
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// Timestamp end = ...;
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// Duration duration = ...;
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//
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// duration.seconds = end.seconds - start.seconds;
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// duration.nanos = end.nanos - start.nanos;
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//
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// if (duration.seconds < 0 && duration.nanos > 0) {
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// duration.seconds += 1;
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// duration.nanos -= 1000000000;
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// } else if (duration.seconds > 0 && duration.nanos < 0) {
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// duration.seconds -= 1;
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// duration.nanos += 1000000000;
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// }
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//
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// Example 2: Compute Timestamp from Timestamp + Duration in pseudo code.
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//
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// Timestamp start = ...;
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// Duration duration = ...;
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// Timestamp end = ...;
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//
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// end.seconds = start.seconds + duration.seconds;
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// end.nanos = start.nanos + duration.nanos;
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//
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// if (end.nanos < 0) {
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// end.seconds -= 1;
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// end.nanos += 1000000000;
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// } else if (end.nanos >= 1000000000) {
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// end.seconds += 1;
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// end.nanos -= 1000000000;
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// }
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//
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// Example 3: Compute Duration from datetime.timedelta in Python.
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//
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// td = datetime.timedelta(days=3, minutes=10)
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// duration = Duration()
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// duration.FromTimedelta(td)
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//
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// # JSON Mapping
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//
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// In JSON format, the Duration type is encoded as a string rather than an
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// object, where the string ends in the suffix "s" (indicating seconds) and
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// is preceded by the number of seconds, with nanoseconds expressed as
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// fractional seconds. For example, 3 seconds with 0 nanoseconds should be
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// encoded in JSON format as "3s", while 3 seconds and 1 nanosecond should
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// be expressed in JSON format as "3.000000001s", and 3 seconds and 1
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// microsecond should be expressed in JSON format as "3.000001s".
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//
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//
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message Duration {
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// Signed seconds of the span of time. Must be from -315,576,000,000
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// to +315,576,000,000 inclusive. Note: these bounds are computed from:
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// 60 sec/min * 60 min/hr * 24 hr/day * 365.25 days/year * 10000 years
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int64 seconds = 1;
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// Signed fractions of a second at nanosecond resolution of the span
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// of time. Durations less than one second are represented with a 0
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// `seconds` field and a positive or negative `nanos` field. For durations
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// of one second or more, a non-zero value for the `nanos` field must be
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// of the same sign as the `seconds` field. Must be from -999,999,999
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// to +999,999,999 inclusive.
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int32 nanos = 2;
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}
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