mirror of https://github.com/knative/pkg.git
70 lines
2.2 KiB
Go
70 lines
2.2 KiB
Go
/*
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Copyright 2019 The Knative Authors
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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// node.go contains types and interfaces pertaining to nodes inside resource tree.
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package resourcetree
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import (
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"reflect"
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"k8s.io/apimachinery/pkg/util/sets"
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)
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// NodeInterface defines methods that can be performed on each node in the resource tree.
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type NodeInterface interface {
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GetData() NodeData
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initialize(field string, parent NodeInterface, t reflect.Type, rt *ResourceTree)
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buildChildNodes(t reflect.Type)
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updateCoverage(v reflect.Value)
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buildCoverageData(coverageDataHelper coverageDataHelper)
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getValues() sets.String
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}
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// NodeData is the data stored in each node of the resource tree.
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type NodeData struct {
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// Represents the Name of the field e.g. field name inside the struct.
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Field string
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// Reference back to the resource tree. Required for cross-tree traversal(connected nodes traversal)
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Tree *ResourceTree
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// Required as type information is not available during tree traversal.
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FieldType reflect.Type
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// Path in the resource tree reaching this node.
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NodePath string
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// Link back to parent.
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Parent NodeInterface
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// Child nodes are keyed using field names(nodeData.field).
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Children map[string]NodeInterface
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// Storing this as an additional field because type-analysis determines the value,
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// which gets used later in value-evaluation
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LeafNode bool
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Covered bool
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}
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func (nd *NodeData) initialize(field string, parent NodeInterface, t reflect.Type, rt *ResourceTree) {
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nd.Field = field
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nd.Tree = rt
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nd.Parent = parent
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nd.FieldType = t
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nd.Children = make(map[string]NodeInterface)
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if parent != nil {
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nd.NodePath = parent.GetData().NodePath + "." + field
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} else {
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nd.NodePath = field
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}
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}
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