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Julian Compagni Portis
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Sep 13, 2023
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,110 @@ | ||
| package utils | ||
|
|
||
| import ( | ||
| "fmt" | ||
|
|
||
| sdk "github.com/cosmos/cosmos-sdk/types" | ||
| "github.com/duality-labs/duality/x/dex/types" | ||
|
|
||
| "github.com/cosmos/cosmos-sdk/types/query" | ||
| ) | ||
|
|
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| func FilteredPaginateAccountBalances( | ||
| ctx sdk.Context, | ||
| bankKeeper types.BankKeeper, | ||
| address sdk.AccAddress, | ||
| pageRequest *query.PageRequest, | ||
| onResult func(coin sdk.Coin, accumulate bool) bool, | ||
| ) (*query.PageResponse, error) { | ||
| // if the PageRequest is nil, use default PageRequest | ||
| if pageRequest == nil { | ||
| pageRequest = &query.PageRequest{} | ||
| } | ||
|
|
||
| offset := pageRequest.Offset | ||
| key := pageRequest.Key | ||
| limit := pageRequest.Limit | ||
| countTotal := pageRequest.CountTotal | ||
|
|
||
| if pageRequest.Reverse { | ||
| return nil, fmt.Errorf("invalid request, reverse pagination is not enabled") | ||
| } | ||
| if offset > 0 && key != nil { | ||
| return nil, fmt.Errorf("invalid request, either offset or key is expected, got both") | ||
| } | ||
|
|
||
| if limit == 0 { | ||
| limit = query.DefaultLimit | ||
|
|
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| // count total results when the limit is zero/not supplied | ||
| countTotal = true | ||
| } | ||
|
|
||
| if len(key) != 0 { | ||
| // paginate with key | ||
| var ( | ||
| numHits uint64 | ||
| nextKey []byte | ||
| ) | ||
| startAccum := false | ||
|
|
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| bankKeeper.IterateAccountBalances(ctx, address, func(coin sdk.Coin) bool { | ||
| if coin.Denom == string(key) { | ||
| startAccum = true | ||
| } | ||
| if numHits == limit { | ||
| nextKey = []byte(coin.Denom) | ||
| return true | ||
| } | ||
| if startAccum { | ||
| hit := onResult(coin, true) | ||
| if hit { | ||
| numHits++ | ||
| } | ||
| } | ||
|
|
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| return false | ||
| }) | ||
|
|
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| return &query.PageResponse{ | ||
| NextKey: nextKey, | ||
| }, nil | ||
| } else { | ||
| // default pagination (with offset) | ||
|
|
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| end := offset + limit | ||
|
|
||
| var ( | ||
| numHits uint64 | ||
| nextKey []byte | ||
| ) | ||
|
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| bankKeeper.IterateAccountBalances(ctx, address, func(coin sdk.Coin) bool { | ||
| accumulate := numHits >= offset && numHits < end | ||
| hit := onResult(coin, accumulate) | ||
|
|
||
| if hit { | ||
| numHits++ | ||
| } | ||
|
|
||
| if numHits == end+1 { | ||
| if nextKey == nil { | ||
| nextKey = []byte(coin.Denom) | ||
| } | ||
|
|
||
| if !countTotal { | ||
| return true | ||
| } | ||
| } | ||
|
|
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| return false | ||
| }) | ||
|
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| res := &query.PageResponse{NextKey: nextKey} | ||
| if countTotal { | ||
| res.Total = numHits | ||
| } | ||
|
|
||
| return res, nil | ||
| } | ||
| } |
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