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// Copyright 2018 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.
package traits
import (
"github.com/google/cel-go/common/types/ref"
)
// Comparer interface for ordering comparisons between values in order to
// support '<', '<=', '>=', '>' overloads.
type Comparer interface {
// Compare this value to the input other value, returning an Int:
//
// this < other -> Int(-1)
// this == other -> Int(0)
// this > other -> Int(1)
//
// If the comparison cannot be made or is not supported, an error should
// be returned.
Compare(other ref.Val) ref.Val
}
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