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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,87 @@ | ||
| package priorityqueue | ||
|
|
||
| import ( | ||
| "container/heap" | ||
| "errors" | ||
| ) | ||
|
|
||
| // PriorityQueue represents the queue | ||
| type PriorityQueue struct { | ||
| itemHeap *itemHeap | ||
| lookup map[interface{}]*item | ||
| } | ||
|
|
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| // New initializes an empty priority queue. | ||
| func New() PriorityQueue { | ||
| return PriorityQueue{ | ||
| itemHeap: &itemHeap{}, | ||
| lookup: make(map[interface{}]*item), | ||
| } | ||
| } | ||
|
|
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| // Len returns the number of elements in the queue. | ||
| func (p *PriorityQueue) Len() int { | ||
| return p.itemHeap.Len() | ||
| } | ||
|
|
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| // Insert inserts a new element into the queue. No action is performed on duplicate elements. | ||
| func (p *PriorityQueue) Insert(v interface{ Hash() string }, priority float64) { | ||
| _, ok := p.lookup[v.Hash()] | ||
| if ok { | ||
| return | ||
| } | ||
|
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| newItem := &item{ | ||
| value: v, | ||
| priority: priority, | ||
| } | ||
| heap.Push(p.itemHeap, newItem) | ||
| p.lookup[v.Hash()] = newItem | ||
| } | ||
|
|
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| // Pop removes the element with the highest priority from the queue and returns it. | ||
| // In case of an empty queue, an error is returned. | ||
| func (p *PriorityQueue) Pop() (interface{}, error) { | ||
| if len(*p.itemHeap) == 0 { | ||
| return nil, errors.New("empty queue") | ||
| } | ||
|
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| item := heap.Pop(p.itemHeap).(*item) | ||
| delete(p.lookup, item.value.(interface{ Hash() string }).Hash()) | ||
| return item.value, nil | ||
| } | ||
|
|
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| type itemHeap []*item | ||
|
|
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| type item struct { | ||
| value interface{} | ||
| priority float64 | ||
| index int | ||
| } | ||
|
|
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| func (ih *itemHeap) Len() int { | ||
| return len(*ih) | ||
| } | ||
|
|
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| func (ih *itemHeap) Less(i, j int) bool { | ||
| return (*ih)[i].priority < (*ih)[j].priority | ||
| } | ||
|
|
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| func (ih *itemHeap) Swap(i, j int) { | ||
| (*ih)[i], (*ih)[j] = (*ih)[j], (*ih)[i] | ||
| (*ih)[i].index = i | ||
| (*ih)[j].index = j | ||
| } | ||
|
|
||
| func (ih *itemHeap) Push(x interface{}) { | ||
| it := x.(*item) | ||
| it.index = len(*ih) | ||
| *ih = append(*ih, it) | ||
| } | ||
|
|
||
| func (ih *itemHeap) Pop() interface{} { | ||
| old := *ih | ||
| item := old[len(old)-1] | ||
| *ih = old[0 : len(old)-1] | ||
| return item | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,16 @@ | ||
| package websocket | ||
|
|
||
| import ( | ||
| "context" | ||
|
|
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| "nhooyr.io/websocket" | ||
| ) | ||
|
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| type BaseMessage struct { | ||
| MsgType string `json:"type"` | ||
| Other any | ||
| } | ||
|
|
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| func ReadWebsocket(ws *websocket.Conn, ctx context.Context) { | ||
|
|
||
| } |
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