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/*
* This file is part of the go-nft project
*
* 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.
*
* Copyright 2021 Red Hat, Inc.
*
*/
package nft
import (
"github.com/networkplumbing/go-nft/nft/schema"
)
// NewRule returns a new schema rule structure.
func NewRule(table *schema.Table, chain *schema.Chain, expr []schema.Statement, handle *int, index *int, comment string) *schema.Rule {
c := &schema.Rule{
Family: table.Family,
Table: table.Name,
Chain: chain.Name,
Expr: expr,
Handle: handle,
Index: index,
Comment: comment,
}
return c
}
type RuleIndex int
// NewRuleIndex returns a rule index object which acts as an iterator.
// When multiple rules are added to a chain, index allows to define an order between them.
// The first rule which is added to a chain should have no index (it is assigned index 0),
// following rules should have the index set, referencing after/before which rule the new one is to be added/inserted.
func NewRuleIndex() *RuleIndex {
var index RuleIndex = -1
return &index
}
// Next returns the next iteration value as an integer pointer.
// When first time called, it returns the value 0.
func (i *RuleIndex) Next() *int {
*i++
var index = int(*i)
return &index
}
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