+++ /dev/null
-// Go support for Protocol Buffers - Google's data interchange format
-//
-// Copyright 2016 The Go Authors. All rights reserved.
-// https://github.com/golang/protobuf
-//
-// 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.
-
-package proto
-
-// This file implements conversions between google.protobuf.Duration
-// and time.Duration.
-
-import (
- "errors"
- "fmt"
- "time"
-)
-
-const (
- // Range of a Duration in seconds, as specified in
- // google/protobuf/duration.proto. This is about 10,000 years in seconds.
- maxSeconds = int64(10000 * 365.25 * 24 * 60 * 60)
- minSeconds = -maxSeconds
-)
-
-// validateDuration determines whether the Duration is valid according to the
-// definition in google/protobuf/duration.proto. A valid Duration
-// may still be too large to fit into a time.Duration (the range of Duration
-// is about 10,000 years, and the range of time.Duration is about 290).
-func validateDuration(d *duration) error {
- if d == nil {
- return errors.New("duration: nil Duration")
- }
- if d.Seconds < minSeconds || d.Seconds > maxSeconds {
- return fmt.Errorf("duration: %#v: seconds out of range", d)
- }
- if d.Nanos <= -1e9 || d.Nanos >= 1e9 {
- return fmt.Errorf("duration: %#v: nanos out of range", d)
- }
- // Seconds and Nanos must have the same sign, unless d.Nanos is zero.
- if (d.Seconds < 0 && d.Nanos > 0) || (d.Seconds > 0 && d.Nanos < 0) {
- return fmt.Errorf("duration: %#v: seconds and nanos have different signs", d)
- }
- return nil
-}
-
-// DurationFromProto converts a Duration to a time.Duration. DurationFromProto
-// returns an error if the Duration is invalid or is too large to be
-// represented in a time.Duration.
-func durationFromProto(p *duration) (time.Duration, error) {
- if err := validateDuration(p); err != nil {
- return 0, err
- }
- d := time.Duration(p.Seconds) * time.Second
- if int64(d/time.Second) != p.Seconds {
- return 0, fmt.Errorf("duration: %#v is out of range for time.Duration", p)
- }
- if p.Nanos != 0 {
- d += time.Duration(p.Nanos)
- if (d < 0) != (p.Nanos < 0) {
- return 0, fmt.Errorf("duration: %#v is out of range for time.Duration", p)
- }
- }
- return d, nil
-}
-
-// DurationProto converts a time.Duration to a Duration.
-func durationProto(d time.Duration) *duration {
- nanos := d.Nanoseconds()
- secs := nanos / 1e9
- nanos -= secs * 1e9
- return &duration{
- Seconds: secs,
- Nanos: int32(nanos),
- }
-}
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