// Copyright 2026 Google LLC
//
// 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.

syntax = "proto3";

package google.type;

import "google/protobuf/timestamp.proto";

option go_package = "google.golang.org/genproto/googleapis/type/interval;interval";
option java_multiple_files = true;
option java_outer_classname = "IntervalProto";
option java_package = "com.google.type";
option objc_class_prefix = "GTP";

// Represents a time interval, encoded as a Timestamp start (inclusive) and a
// Timestamp end (exclusive).
//
// The start must be less than or equal to the end.
// When the start equals the end, the interval is empty (matches no time).
// When both start and end are unspecified, the interval matches any time.
message Interval {
  // Optional. Inclusive start of the interval.
  //
  // If specified, a Timestamp matching this interval will have to be the same
  // or after the start.
  google.protobuf.Timestamp start_time = 1;

  // Optional. Exclusive end of the interval.
  //
  // If specified, a Timestamp matching this interval will have to be before the
  // end.
  google.protobuf.Timestamp end_time = 2;
}
