github.com/kaydxh/golang@v0.0.131/pkg/resolver/resolverquerymap_syncmap.go (about) 1 /* 2 *Copyright (c) 2022, kaydxh 3 * 4 *Permission is hereby granted, free of charge, to any person obtaining a copy 5 *of this software and associated documentation files (the "Software"), to deal 6 *in the Software without restriction, including without limitation the rights 7 *to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 8 *copies of the Software, and to permit persons to whom the Software is 9 *furnished to do so, subject to the following conditions: 10 * 11 *The above copyright notice and this permission notice shall be included in all 12 *copies or substantial portions of the Software. 13 * 14 *THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 *IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 *FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 17 *AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 18 *LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 19 *OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 20 *SOFTWARE. 21 */ 22 package resolver 23 24 import ( 25 "sync" // Used by sync.Map. 26 ) 27 28 // Generate code that will fail if the constants change value. 29 func _() { 30 // An "cannot convert ResolverQueryMap literal (type ResolverQueryMap) to type sync.Map" compiler error signifies that the base type have changed. 31 // Re-run the go-syncmap command to generate them again. 32 _ = (sync.Map)(ResolverQueryMap{}) 33 } 34 35 var _nil_ResolverQueryMap_ResolverQuery_value = func() (val ResolverQuery) { return }() 36 37 // Load returns the value stored in the map for a key, or nil if no 38 // value is present. 39 // The ok result indicates whether value was found in the map. 40 func (m *ResolverQueryMap) Load(key string) (ResolverQuery, bool) { 41 value, ok := (*sync.Map)(m).Load(key) 42 if value == nil { 43 return _nil_ResolverQueryMap_ResolverQuery_value, ok 44 } 45 return value.(ResolverQuery), ok 46 } 47 48 // Store sets the value for a key. 49 func (m *ResolverQueryMap) Store(key string, value ResolverQuery) { 50 (*sync.Map)(m).Store(key, value) 51 } 52 53 // LoadOrStore returns the existing value for the key if present. 54 // Otherwise, it stores and returns the given value. 55 // The loaded result is true if the value was loaded, false if stored. 56 func (m *ResolverQueryMap) LoadOrStore(key string, value ResolverQuery) (ResolverQuery, bool) { 57 actual, loaded := (*sync.Map)(m).LoadOrStore(key, value) 58 if actual == nil { 59 return _nil_ResolverQueryMap_ResolverQuery_value, loaded 60 } 61 return actual.(ResolverQuery), loaded 62 } 63 64 // LoadAndDelete deletes the value for a key, returning the previous value if any. 65 // The loaded result reports whether the key was present. 66 func (m *ResolverQueryMap) LoadAndDelete(key string) (value ResolverQuery, loaded bool) { 67 actual, loaded := (*sync.Map)(m).LoadAndDelete(key) 68 if actual == nil { 69 return _nil_ResolverQueryMap_ResolverQuery_value, loaded 70 } 71 return actual.(ResolverQuery), loaded 72 } 73 74 // Delete deletes the value for a key. 75 func (m *ResolverQueryMap) Delete(key string) { 76 (*sync.Map)(m).Delete(key) 77 } 78 79 // Range calls f sequentially for each key and value present in the map. 80 // If f returns false, range stops the iteration. 81 // 82 // Range does not necessarily correspond to any consistent snapshot of the Map's 83 // contents: no key will be visited more than once, but if the value for any key 84 // is stored or deleted concurrently, Range may reflect any mapping for that key 85 // from any point during the Range call. 86 // 87 // Range may be O(N) with the number of elements in the map even if f returns 88 // false after a constant number of calls. 89 func (m *ResolverQueryMap) Range(f func(key string, value ResolverQuery) bool) { 90 (*sync.Map)(m).Range(func(key, value interface{}) bool { 91 return f(key.(string), value.(ResolverQuery)) 92 }) 93 }