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98 lines
2.1 KiB
98 lines
2.1 KiB
// ------------------------------------------------------------------------
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// Project active2
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// Active Thing (activething.com) git.activething.com/go
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//
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// File name scope.go
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// Created by DEV
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// Modified 19/03/2024
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//
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// Copyright 2024 activething.com
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// ------------------------------------------------------------------------
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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package vals
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import "sync"
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type (
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Scope struct {
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atts ScopeAtt
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parent KeyValueGetter
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values sync.Map
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}
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ScopeFnc func(*Scope)
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)
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func NewScope(options ...ScopeFnc) *Scope {
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return applyScopeOptions(&Scope{ parent: GetKeyValueFnc(nopGetKeyValue)}, options...) }
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func (s *Scope) NewChildScope(options ...ScopeFnc) *Scope {
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return applyScopeOptions(&Scope{parent: s },options ...) }
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func (s *Scope) Atts () ScopeAtt {
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return s.atts }
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func (s *Scope) GetKeyValue(key any) (any, bool) {
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if key == nil {
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return nil, false
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}
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v, h := s.values.Load(key)
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if !h {
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v, h = s.parent.GetKeyValue(key)
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}
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if h {
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return AsValue(v), true
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}
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return nil, false
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}
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func (s *Scope) SetKeyValue(key any, value any) error {
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if key == nil {
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//todo error
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}
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if s.atts.IsReadOnly() {
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//todo error
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}
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s.values.Store(key, AsValuer(value))
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return nil
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}
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func (s *Scope) DelKeyValue (key any) {
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s.values.Delete(key) }
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func (s *Scope) Range (f func(key, value any) bool) {
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s.values.Range(f) }
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func (s *Scope) Reset () {
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s.values.Range(func(k,v any) bool {
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s.values.Delete(k)
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return true
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})
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} |