nvidia-container-toolkit/internal/requirements/constraints/constants.go

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/**
# Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
#
# 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 constraints
import "fmt"
const (
equal = "="
notEqual = "!="
less = "<"
lessEqual = "<="
greater = ">"
greaterEqual = ">="
)
// always is a constraint that is always met
type always struct{}
func (c always) Assert() error {
return nil
}
func (c always) String() string {
return "true"
}
// invalid is an invalid constraint and can never be met
type invalid string
func (c invalid) Assert() error {
return fmt.Errorf("invalid constraint: %v", c.String())
}
// String returns the string representation of the contraint
func (c invalid) String() string {
return string(c)
}