forked from hyperjumptech/grule-rule-engine
/
CloneTool.go
51 lines (43 loc) · 1.7 KB
/
CloneTool.go
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// Copyright hartmamt/grule-rule-engine Authors
//
// 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 pkg
// CloneRecord contains information about all AST versions, instance, their cloned version and cloned instance.
type CloneRecord struct {
OriginAstID string
CloneAstID string
OriginInstance interface{}
CloneInstance interface{}
}
// NewCloneTable create new instance of CloneTable
func NewCloneTable() *CloneTable {
return &CloneTable{Records: make(map[string]*CloneRecord)}
}
// CloneTable will stores all meta information about AST object being cloned under one KnowledgeBase.
type CloneTable struct {
Records map[string]*CloneRecord
}
// IsCloned will check if an AST object with identified astId has a clone.
func (tab *CloneTable) IsCloned(astID string) bool {
_, ok := tab.Records[astID]
return ok
}
// MarkCloned will record that an Ast object are now been cloned, so all other cloned object should reference to the newly cloned Ast object
func (tab *CloneTable) MarkCloned(originAst, cloneAst string, origin, clone interface{}) {
tab.Records[originAst] = &CloneRecord{
OriginAstID: originAst,
CloneAstID: cloneAst,
OriginInstance: origin,
CloneInstance: clone,
}
}