tx · AkDPVGtjTXBVAg3XDDHEjcyzDUzwZNdyXE3EqCBVGAGB

3NCD7sCFocnQuSL6gaDqWD9Noq9RCwjCup4:  -0.01400000 Waves

2020.10.22 21:52 [1232163] smart account 3NCD7sCFocnQuSL6gaDqWD9Noq9RCwjCup4 > SELF 0.00000000 Waves

{
    "type": 13,
    "id": "AkDPVGtjTXBVAg3XDDHEjcyzDUzwZNdyXE3EqCBVGAGB",
    "fee": 1400000,
    "feeAssetId": null,
    "timestamp": 1603392738206,
    "version": 1,
    "sender": "3NCD7sCFocnQuSL6gaDqWD9Noq9RCwjCup4",
    "senderPublicKey": "HuNwRHF9iwGdZDspJ7V7eY2akXjp5fWmTprKuM97CATY",
    "proofs": [
        "KpP3Md1Zw2nf53kxu79PSAxAQteT5FZ2z1Kg3n7q86AMivnrJeeFGyoG89XBMk9X7VoUNyDjbM8KRfLaH5rye7e"
    ],
    "script": 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    "chainId": 84,
    "height": 1232163,
    "applicationStatus": "succeeded",
    "spentComplexity": 0
}

View: original | compacted
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Diff: 

OldNewDifferences
55 
66 let IdTokenB = getStringValue(this, "assetIdTokenB")
77 
8-let IdTokenShare = getStringValue(this, "share_token_id")
8+let amountTokenB = getIntegerValue(this, "amountTokenB")
99 
10-let dAppTokensAmountA = getIntegerValue(this, "amountTokenA")
10+let amountTokenA = getIntegerValue(this, "amountTokenA")
1111 
12-let dAppTokensAmountB = getIntegerValue(this, "amountTokenB")
12+let assetIdTokenShare = getBinaryValue(this, "share_token_id")
1313 
1414 let tokenShareSupply = getIntegerValue(this, "share_token_supply")
1515 
16-let comission = 0
16+let comission = 500
1717 
18-let comissionScaleDelimiter = 10000
18+let comissionScaleDelimiter = 1000000
1919 
20-let version = "2.0.0"
21-
22-let invariant = getIntegerValue(this, "invariant")
20+let version = "1.0.0"
2321 
2422 let scaleValue8 = 100000000
25-
26-let scaleValue8Digits = 8
27-
28-let scaleValue12 = 1000000000000
2923 
3024 let ratioThresholdMax = 100000000
3125 
3226 let ratioThresholdMin = 99999000
3327 
34-let alpha = 50
35-
36-let alphaDigits = 2
37-
38-let betta = 46
39-
40-let bettaDigits = 2
41-
42-func skeweness (x,y) = ((fraction(scaleValue8, x, y) + fraction(scaleValue8, y, x)) / 2)
43-
44-
45-func invariantCalc (x,y) = {
46-    let sk = skeweness(x, y)
47-    (fraction((x + y), pow(sk, scaleValue8Digits, -(alpha), alphaDigits, 8, HALFDOWN), scaleValue8) + (2 * fraction(fraction(pow(x, 0, 5, 1, scaleValue8Digits, HALFDOWN), pow(y, 0, 5, 1, scaleValue8Digits, HALFDOWN), (scaleValue8 * scaleValue8)), pow((sk - ((betta * scaleValue8) / 100)), 0, alpha, alphaDigits, scaleValue8Digits, HALFDOWN), scaleValue12)))
48-    }
49-
28+let scaleValue8Digits = 8
5029 
5130 func assetId (asset) = if ((asset == "WAVES"))
5231     then unit
5332     else fromBase58String(asset)
5433 
5534 
56-func calculateHowManySendTokenA (amountToSendEstimated,minTokenRecieveAmount,amountTokenA,amountTokenB,tokenReceiveAmount) = {
57-    let slippageValue = (scaleValue8 - ((scaleValue8 * 1) / 10000))
58-    let invariantEstimatedRatio = fraction(invariant, scaleValue8, invariantCalc((amountTokenA - amountToSendEstimated), (amountTokenB + tokenReceiveAmount)))
59-    if (if ((invariantEstimatedRatio > slippageValue))
60-        then (scaleValue8 > invariantEstimatedRatio)
61-        else false)
62-        then ((amountToSendEstimated * (comissionScaleDelimiter - comission)) / comissionScaleDelimiter)
63-        else throw("price has changed dramatically. err2")
64-    }
65-
66-
67-func calculateHowManySendTokenB (amountToSendEstimated,minTokenRecieveAmount,amountTokenA,amountTokenB,tokenReceiveAmount) = {
68-    let slippageValue = (scaleValue8 - ((scaleValue8 * 1) / 10000))
69-    let invariantEstimatedRatio = fraction(invariant, scaleValue8, invariantCalc((amountTokenA + tokenReceiveAmount), (amountTokenB - amountToSendEstimated)))
70-    if (if ((invariantEstimatedRatio > slippageValue))
71-        then (scaleValue8 > invariantEstimatedRatio)
72-        else false)
73-        then ((amountToSendEstimated * (comissionScaleDelimiter - comission)) / comissionScaleDelimiter)
74-        else throw("price has changed dramatically. err2")
75-    }
76-
77-
7835 let assetIdTokenA = assetId(IdTokenA)
7936 
8037 let assetIdTokenB = assetId(IdTokenB)
81-
82-let assetIdTokenShare = fromBase58String(IdTokenShare)
8338 
8439 @Callable(contextObj)
8540 func fund () = {
12883                 case _ => 
12984                     throw("Match error")
13085             }
131-            let invariantCalcualated = invariantCalc(tokenReceiveAmountA, tokenReceiveAmountB)
132-[IntegerEntry("amountTokenA", tokenReceiveAmountA), IntegerEntry("amountTokenB", tokenReceiveAmountB), StringEntry("assetIdTokenA", assetIdTokenStringA), StringEntry("assetIdTokenB", assetIdTokenStringB), IntegerEntry("invariant", invariantCalcualated), IntegerEntry("exchange_count", 0), BooleanEntry("status", true), IntegerEntry("comission", comission), IntegerEntry("comissionScaleDelimiter", comissionScaleDelimiter), StringEntry("version", version), Issue(shareTokenName, shareTokenName, shareTokenInitialAmount, digitsInShareToken, true), ScriptTransfer(contextObj.caller, shareTokenInitialAmount, shareTokenAssetId), StringEntry("share_token_id", toBase58String(shareTokenAssetId)), IntegerEntry("share_token_supply", shareTokenInitialAmount)]
86+[IntegerEntry("amountTokenA", tokenReceiveAmountA), IntegerEntry("amountTokenB", tokenReceiveAmountB), StringEntry("assetIdTokenA", assetIdTokenStringA), StringEntry("assetIdTokenB", assetIdTokenStringB), IntegerEntry("exchange_count", 0), BooleanEntry("status", true), IntegerEntry("comission", comission), IntegerEntry("comissionScaleDelimiter", comissionScaleDelimiter), StringEntry("version", version), Issue(shareTokenName, shareTokenName, shareTokenInitialAmount, digitsInShareToken, true), ScriptTransfer(contextObj.caller, shareTokenInitialAmount, shareTokenAssetId), BinaryEntry("share_token_id", shareTokenAssetId), IntegerEntry("share_token_supply", shareTokenInitialAmount)]
13387             }
13488     }
13589 
13690 
13791 
13892 @Callable(contextObj)
139-func replenishmentWithTwoToken () = {
93+func replenishment () = {
14094     let paymentA = value(contextObj.payments[0])
14195     let paymentB = value(contextObj.payments[1])
14296     let assetIdReceivedA = paymentA.assetId
14397     let tokenReceiveAmountA = paymentA.amount
14498     let assetIdReceivedB = paymentB.assetId
14599     let tokenReceiveAmountB = paymentB.amount
146-    let invariantCalcualated = invariantCalc((dAppTokensAmountA + tokenReceiveAmountA), (dAppTokensAmountB + tokenReceiveAmountB))
100+    let dAppTokensAmountA = getIntegerValue(this, "amountTokenA")
101+    let dAppTokensAmountB = getIntegerValue(this, "amountTokenB")
147102     if (if ((assetIdReceivedA != assetIdTokenA))
148103         then true
149104         else (assetIdReceivedB != assetIdTokenB))
150105         then throw("incorrect assets")
151106         else {
152-            let tokenRatio = (fraction(tokenReceiveAmountA, (1000000000000 * 1000), dAppTokensAmountA) / fraction(dAppTokensAmountB, 1000000000000, tokenReceiveAmountB))
153-            if (!(if ((tokenRatio > 990))
154-                then (1010 > tokenRatio)
107+            let tokenRatio = (fraction(tokenReceiveAmountA, (1000000000000 * 100000), dAppTokensAmountA) / fraction(dAppTokensAmountB, 1000000000000, tokenReceiveAmountB))
108+            if (!(if ((tokenRatio > 99990))
109+                then (100010 > tokenRatio)
155110                 else false))
156111                 then throw("incorrect assets amount")
157112                 else {
158113                     let shareTokenToPayAmount = fraction(tokenReceiveAmountA, tokenShareSupply, dAppTokensAmountA)
159114                     if ((shareTokenToPayAmount == 0))
160115                         then throw("you try replansish with very small amount")
161-                        else [Reissue(assetIdTokenShare, shareTokenToPayAmount, true), ScriptTransfer(contextObj.caller, shareTokenToPayAmount, assetIdTokenShare), IntegerEntry("share_token_supply", (tokenShareSupply + shareTokenToPayAmount)), IntegerEntry("amountTokenA", (dAppTokensAmountA + tokenReceiveAmountA)), IntegerEntry("amountTokenB", (dAppTokensAmountB + tokenReceiveAmountB)), IntegerEntry("invariant", invariantCalcualated)]
116+                        else [Reissue(assetIdTokenShare, shareTokenToPayAmount, true), ScriptTransfer(contextObj.caller, shareTokenToPayAmount, assetIdTokenShare), IntegerEntry("share_token_supply", (tokenShareSupply + shareTokenToPayAmount)), IntegerEntry("amountTokenA", (dAppTokensAmountA + tokenReceiveAmountA)), IntegerEntry("amountTokenB", (dAppTokensAmountB + tokenReceiveAmountB))]
162117                     }
163118             }
164119     }
166121 
167122 
168123 @Callable(contextObj)
169-func replanishmentWithOneToken (tokenAamountWithOldInvariantNewPrice,tokenBamountWithOldInvariantNewPrice) = {
124+func replanishmentWithOneToken () = {
170125     let payment = value(contextObj.payments[0])
171126     let assetIdReceived = payment.assetId
172127     let tokenReceiveAmount = payment.amount
173128     if ((assetIdReceived == assetIdTokenA))
174129         then {
175-            let newAmountTokenA = (dAppTokensAmountA + tokenReceiveAmount)
176-            let newInvariant = invariantCalc(newAmountTokenA, dAppTokensAmountB)
177-            let priceAtoBwith8digits = fraction(newAmountTokenA, scaleValue8, dAppTokensAmountB)
178-            let isCorrectPriceRation = fraction(tokenBamountWithOldInvariantNewPrice, priceAtoBwith8digits, tokenAamountWithOldInvariantNewPrice)
179-            if (if ((isCorrectPriceRation > ratioThresholdMax))
180-                then true
181-                else (ratioThresholdMin > isCorrectPriceRation))
182-                then throw("incorrect function args: price")
183-                else {
184-                    let calculatedInvariantWithNewPrice = invariantCalc(tokenAamountWithOldInvariantNewPrice, tokenBamountWithOldInvariantNewPrice)
185-                    let isCorrectInvariantRation = fraction(calculatedInvariantWithNewPrice, scaleValue8, invariant)
186-                    if (if ((isCorrectInvariantRation > ratioThresholdMax))
187-                        then true
188-                        else (ratioThresholdMin > isCorrectInvariantRation))
189-                        then throw("incorrect function args: invariant")
190-                        else {
191-                            let newTokenShareSupply = fraction(tokenBamountWithOldInvariantNewPrice, tokenShareSupply, dAppTokensAmountB)
192-                            let shareTokenToPayAmount = (newTokenShareSupply - tokenShareSupply)
193-[Reissue(assetIdTokenShare, shareTokenToPayAmount, true), ScriptTransfer(contextObj.caller, shareTokenToPayAmount, assetIdTokenShare), IntegerEntry("share_token_supply", (tokenShareSupply + shareTokenToPayAmount)), IntegerEntry("amountTokenA", newAmountTokenA), IntegerEntry("invariant", newInvariant)]
194-                            }
195-                    }
130+            let newAmountTokenA = (amountTokenA + tokenReceiveAmount)
131+            let priceAtoBwith8digits = fraction(newAmountTokenA, scaleValue8, amountTokenB)
132+            let tokenAmountBNewPriceOldInvariant = pow(fraction(amountTokenA, amountTokenB, priceAtoBwith8digits), 0, 5, 1, 0, HALFDOWN)
133+            let newTokenShareSupply = fraction(amountTokenB, tokenShareSupply, tokenAmountBNewPriceOldInvariant)
134+            let shareTokenToPayAmount = (newTokenShareSupply - tokenShareSupply)
135+[Reissue(assetIdTokenShare, shareTokenToPayAmount, true), ScriptTransfer(contextObj.caller, shareTokenToPayAmount, assetIdTokenShare), IntegerEntry("share_token_supply", (tokenShareSupply + shareTokenToPayAmount)), IntegerEntry("amountTokenA", newAmountTokenA)]
196136             }
197137         else if ((assetIdReceived == assetIdTokenB))
198138             then {
199-                let newAmountTokenB = (dAppTokensAmountB + tokenReceiveAmount)
200-                let newInvariant = invariantCalc(dAppTokensAmountA, newAmountTokenB)
201-                let priceAtoBwith8digits = fraction(dAppTokensAmountA, scaleValue8, newAmountTokenB)
202-                let isCorrectPriceRation = fraction(tokenBamountWithOldInvariantNewPrice, priceAtoBwith8digits, tokenAamountWithOldInvariantNewPrice)
203-                if (if ((isCorrectPriceRation > ratioThresholdMax))
204-                    then true
205-                    else (ratioThresholdMin > isCorrectPriceRation))
206-                    then throw("incorrect function args: price")
207-                    else {
208-                        let calculatedInvariantWithNewPrice = invariantCalc(tokenAamountWithOldInvariantNewPrice, tokenBamountWithOldInvariantNewPrice)
209-                        let isCorrectInvariantRation = fraction(calculatedInvariantWithNewPrice, scaleValue8, invariant)
210-                        if (if ((isCorrectInvariantRation > ratioThresholdMax))
211-                            then true
212-                            else (ratioThresholdMin > isCorrectInvariantRation))
213-                            then throw("incorrect function args: invariant")
214-                            else {
215-                                let newTokenShareSupply = fraction(tokenBamountWithOldInvariantNewPrice, tokenShareSupply, dAppTokensAmountB)
216-                                let shareTokenToPayAmount = (newTokenShareSupply - tokenShareSupply)
217-[Reissue(assetIdTokenShare, shareTokenToPayAmount, true), ScriptTransfer(contextObj.caller, shareTokenToPayAmount, assetIdTokenShare), IntegerEntry("share_token_supply", (tokenShareSupply + shareTokenToPayAmount)), IntegerEntry("amountTokenB", newAmountTokenB), IntegerEntry("invariant", newInvariant)]
218-                                }
219-                        }
139+                let newAmountTokenB = (amountTokenB + tokenReceiveAmount)
140+                let priceAtoBwith8digits = fraction(amountTokenA, scaleValue8, newAmountTokenB)
141+                let tokenAmountBNewPriceOldInvariant = pow(fraction(amountTokenA, amountTokenB, priceAtoBwith8digits), 0, 5, 1, 0, HALFDOWN)
142+                let newTokenShareSupply = fraction(amountTokenB, tokenShareSupply, tokenAmountBNewPriceOldInvariant)
143+                let shareTokenToPayAmount = (newTokenShareSupply - tokenShareSupply)
144+[Reissue(assetIdTokenShare, shareTokenToPayAmount, true), ScriptTransfer(contextObj.caller, shareTokenToPayAmount, assetIdTokenShare), IntegerEntry("share_token_supply", (tokenShareSupply + shareTokenToPayAmount)), IntegerEntry("amountTokenB", newAmountTokenB)]
220145                 }
221146             else throw("incorrect assets in payment")
222147     }
225150 
226151 @Callable(contextObj)
227152 func withdraw () = {
153+    let dAppTokensAmountA = getIntegerValue(this, "amountTokenA")
154+    let dAppTokensAmountB = getIntegerValue(this, "amountTokenB")
228155     let payment = value(contextObj.payments[0])
229156     let assetIdReceived = payment.assetId
230157     let tokenReceiveAmount = payment.amount
233160         else {
234161             let tokensToPayA = fraction(tokenReceiveAmount, dAppTokensAmountA, tokenShareSupply)
235162             let tokensToPayB = fraction(tokenReceiveAmount, dAppTokensAmountB, tokenShareSupply)
236-            let invariantCalcualated = invariantCalc((dAppTokensAmountA - tokensToPayA), (dAppTokensAmountB - tokensToPayB))
237-[IntegerEntry("amountTokenA", (dAppTokensAmountA - tokensToPayA)), IntegerEntry("amountTokenB", (dAppTokensAmountB - tokensToPayB)), IntegerEntry("share_token_supply", (tokenShareSupply - tokenReceiveAmount)), ScriptTransfer(contextObj.caller, tokensToPayA, assetIdTokenA), ScriptTransfer(contextObj.caller, tokensToPayB, assetIdTokenB), Burn(assetIdTokenShare, tokenReceiveAmount), IntegerEntry("invariant", invariantCalcualated)]
163+[ScriptTransfer(contextObj.caller, tokensToPayA, assetIdTokenA), ScriptTransfer(contextObj.caller, tokensToPayB, assetIdTokenB), IntegerEntry("amountTokenA", (dAppTokensAmountA - tokensToPayA)), IntegerEntry("amountTokenB", (dAppTokensAmountB - tokensToPayB)), IntegerEntry("share_token_supply", (tokenShareSupply - tokenReceiveAmount)), Burn(assetIdTokenShare, tokenReceiveAmount)]
238164             }
239165     }
240166 
241167 
242168 
243169 @Callable(contextObj)
244-func exchanger (amountToSendEstimated,minTokenRecieveAmount) = {
245-    let amountTokenB = getIntegerValue(this, "amountTokenB")
246-    let amountTokenA = getIntegerValue(this, "amountTokenA")
170+func exchanger (minTokenRecieve) = {
247171     let payment = value(contextObj.payments[0])
248172     let assetIdReceived = payment.assetId
249173     let tokenReceiveAmount = payment.amount
250-    let count =     match getInteger(this, "exchange_count") {
251-        case i: Int => 
252-            (value(getInteger(this, "exchange_count")) + i)
253-        case _ => 
254-            0
255-    }
174+    let count = value(getInteger(this, "exchange_count"))
256175     if ((assetIdReceived == assetIdTokenB))
257176         then {
258-            let tokenSendAmount = calculateHowManySendTokenA(amountToSendEstimated, minTokenRecieveAmount, amountTokenA, amountTokenB, tokenReceiveAmount)
259-            let assetIdSent = assetIdTokenA
260-[IntegerEntry("amountTokenA", (amountTokenA - tokenSendAmount)), IntegerEntry("amountTokenB", (amountTokenB + tokenReceiveAmount)), IntegerEntry("exchange_count", (count + 1)), IntegerEntry("invariant", invariantCalc((amountTokenA - tokenSendAmount), (amountTokenB + tokenReceiveAmount))), ScriptTransfer(contextObj.caller, tokenSendAmount, assetIdSent)]
177+            let tokenSendAmount = ((fraction(amountTokenA, tokenReceiveAmount, (tokenReceiveAmount + amountTokenB)) * (comissionScaleDelimiter - comission)) / comissionScaleDelimiter)
178+            if ((minTokenRecieve > tokenSendAmount))
179+                then throw("Price has changed dramaticaly. Receiving token amount don't satisfy specified price level")
180+                else {
181+                    let assetIdSent = assetIdTokenA
182+[IntegerEntry("amountTokenA", (amountTokenA - tokenSendAmount)), IntegerEntry("amountTokenB", (amountTokenB + tokenReceiveAmount)), IntegerEntry("exchange_count", (count + 1)), ScriptTransfer(contextObj.caller, tokenSendAmount, assetIdSent)]
183+                    }
261184             }
262185         else if ((assetIdReceived == assetIdTokenA))
263186             then {
264-                let tokenSendAmount = calculateHowManySendTokenB(amountToSendEstimated, minTokenRecieveAmount, amountTokenA, amountTokenB, tokenReceiveAmount)
265-                let assetIdSent = assetIdTokenB
266-[IntegerEntry("amountTokenA", (amountTokenA + tokenReceiveAmount)), IntegerEntry("amountTokenB", (amountTokenB - tokenSendAmount)), IntegerEntry("exchange_count", (count + 1)), IntegerEntry("invariant", invariantCalc((amountTokenA + tokenReceiveAmount), (amountTokenB - tokenSendAmount))), ScriptTransfer(contextObj.caller, tokenSendAmount, assetIdSent)]
187+                let tokenSendAmount = ((fraction(amountTokenB, tokenReceiveAmount, (tokenReceiveAmount + amountTokenA)) * (comissionScaleDelimiter - comission)) / comissionScaleDelimiter)
188+                if ((minTokenRecieve > tokenSendAmount))
189+                    then throw("Price has changed dramaticaly. Receiving token amount don't satisfy specified price level")
190+                    else {
191+                        let assetIdSent = assetIdTokenB
192+[IntegerEntry("amountTokenA", (amountTokenA + tokenReceiveAmount)), IntegerEntry("amountTokenB", (amountTokenB - tokenSendAmount)), IntegerEntry("exchange_count", (count + 1)), ScriptTransfer(contextObj.caller, tokenSendAmount, assetIdSent)]
193+                        }
267194                 }
268195             else throw("Asset is not allowed")
269196     }

Full: 

OldNewDifferences
11 {-# STDLIB_VERSION 4 #-}
22 {-# SCRIPT_TYPE ACCOUNT #-}
33 {-# CONTENT_TYPE DAPP #-}
44 let IdTokenA = getStringValue(this, "assetIdTokenA")
55 
66 let IdTokenB = getStringValue(this, "assetIdTokenB")
77 
8-let IdTokenShare = getStringValue(this, "share_token_id")
8+let amountTokenB = getIntegerValue(this, "amountTokenB")
99 
10-let dAppTokensAmountA = getIntegerValue(this, "amountTokenA")
10+let amountTokenA = getIntegerValue(this, "amountTokenA")
1111 
12-let dAppTokensAmountB = getIntegerValue(this, "amountTokenB")
12+let assetIdTokenShare = getBinaryValue(this, "share_token_id")
1313 
1414 let tokenShareSupply = getIntegerValue(this, "share_token_supply")
1515 
16-let comission = 0
16+let comission = 500
1717 
18-let comissionScaleDelimiter = 10000
18+let comissionScaleDelimiter = 1000000
1919 
20-let version = "2.0.0"
21-
22-let invariant = getIntegerValue(this, "invariant")
20+let version = "1.0.0"
2321 
2422 let scaleValue8 = 100000000
25-
26-let scaleValue8Digits = 8
27-
28-let scaleValue12 = 1000000000000
2923 
3024 let ratioThresholdMax = 100000000
3125 
3226 let ratioThresholdMin = 99999000
3327 
34-let alpha = 50
35-
36-let alphaDigits = 2
37-
38-let betta = 46
39-
40-let bettaDigits = 2
41-
42-func skeweness (x,y) = ((fraction(scaleValue8, x, y) + fraction(scaleValue8, y, x)) / 2)
43-
44-
45-func invariantCalc (x,y) = {
46-    let sk = skeweness(x, y)
47-    (fraction((x + y), pow(sk, scaleValue8Digits, -(alpha), alphaDigits, 8, HALFDOWN), scaleValue8) + (2 * fraction(fraction(pow(x, 0, 5, 1, scaleValue8Digits, HALFDOWN), pow(y, 0, 5, 1, scaleValue8Digits, HALFDOWN), (scaleValue8 * scaleValue8)), pow((sk - ((betta * scaleValue8) / 100)), 0, alpha, alphaDigits, scaleValue8Digits, HALFDOWN), scaleValue12)))
48-    }
49-
28+let scaleValue8Digits = 8
5029 
5130 func assetId (asset) = if ((asset == "WAVES"))
5231     then unit
5332     else fromBase58String(asset)
5433 
5534 
56-func calculateHowManySendTokenA (amountToSendEstimated,minTokenRecieveAmount,amountTokenA,amountTokenB,tokenReceiveAmount) = {
57-    let slippageValue = (scaleValue8 - ((scaleValue8 * 1) / 10000))
58-    let invariantEstimatedRatio = fraction(invariant, scaleValue8, invariantCalc((amountTokenA - amountToSendEstimated), (amountTokenB + tokenReceiveAmount)))
59-    if (if ((invariantEstimatedRatio > slippageValue))
60-        then (scaleValue8 > invariantEstimatedRatio)
61-        else false)
62-        then ((amountToSendEstimated * (comissionScaleDelimiter - comission)) / comissionScaleDelimiter)
63-        else throw("price has changed dramatically. err2")
64-    }
65-
66-
67-func calculateHowManySendTokenB (amountToSendEstimated,minTokenRecieveAmount,amountTokenA,amountTokenB,tokenReceiveAmount) = {
68-    let slippageValue = (scaleValue8 - ((scaleValue8 * 1) / 10000))
69-    let invariantEstimatedRatio = fraction(invariant, scaleValue8, invariantCalc((amountTokenA + tokenReceiveAmount), (amountTokenB - amountToSendEstimated)))
70-    if (if ((invariantEstimatedRatio > slippageValue))
71-        then (scaleValue8 > invariantEstimatedRatio)
72-        else false)
73-        then ((amountToSendEstimated * (comissionScaleDelimiter - comission)) / comissionScaleDelimiter)
74-        else throw("price has changed dramatically. err2")
75-    }
76-
77-
7835 let assetIdTokenA = assetId(IdTokenA)
7936 
8037 let assetIdTokenB = assetId(IdTokenB)
81-
82-let assetIdTokenShare = fromBase58String(IdTokenShare)
8338 
8439 @Callable(contextObj)
8540 func fund () = {
8641     let paymentA = value(contextObj.payments[0])
8742     let paymentB = value(contextObj.payments[1])
8843     let assetIdReceivedA = paymentA.assetId
8944     let tokenReceiveAmountA = paymentA.amount
9045     let assetIdReceivedB = paymentB.assetId
9146     let tokenReceiveAmountB = paymentB.amount
9247     let digitTokenA =     match assetIdReceivedA {
9348         case p: Unit => 
9449             8
9550         case p: ByteVector => 
9651             value(assetInfo(p)).decimals
9752         case _ => 
9853             throw("Match error")
9954     }
10055     let digitTokenB =     match assetIdReceivedB {
10156         case p: Unit => 
10257             8
10358         case p: ByteVector => 
10459             value(assetInfo(p)).decimals
10560         case _ => 
10661             throw("Match error")
10762     }
10863     if (isDefined(getBoolean(this, "status")))
10964         then throw("already active")
11065         else {
11166             let shareTokenName = ("ShareT_" + takeRight(toString(this), 5))
11267             let digitsInShareToken = ((digitTokenA + digitTokenB) / 2)
11368             let shareTokenInitialAmount = fraction(pow(tokenReceiveAmountA, digitTokenA, 5, 1, digitTokenA, HALFDOWN), pow(tokenReceiveAmountB, digitTokenB, 5, 1, digitTokenB, HALFDOWN), pow(10, 0, digitsInShareToken, 0, 0, HALFDOWN))
11469             let shareTokenAssetId = calculateAssetId(Issue(shareTokenName, shareTokenName, shareTokenInitialAmount, digitsInShareToken, true))
11570             let assetIdTokenStringA =             match assetIdReceivedA {
11671                 case t: Unit => 
11772                     "WAVES"
11873                 case t: ByteVector => 
11974                     toBase58String(value(assetIdReceivedA))
12075                 case _ => 
12176                     throw("Match error")
12277             }
12378             let assetIdTokenStringB =             match assetIdReceivedB {
12479                 case t: Unit => 
12580                     "WAVES"
12681                 case t: ByteVector => 
12782                     toBase58String(value(assetIdReceivedB))
12883                 case _ => 
12984                     throw("Match error")
13085             }
131-            let invariantCalcualated = invariantCalc(tokenReceiveAmountA, tokenReceiveAmountB)
132-[IntegerEntry("amountTokenA", tokenReceiveAmountA), IntegerEntry("amountTokenB", tokenReceiveAmountB), StringEntry("assetIdTokenA", assetIdTokenStringA), StringEntry("assetIdTokenB", assetIdTokenStringB), IntegerEntry("invariant", invariantCalcualated), IntegerEntry("exchange_count", 0), BooleanEntry("status", true), IntegerEntry("comission", comission), IntegerEntry("comissionScaleDelimiter", comissionScaleDelimiter), StringEntry("version", version), Issue(shareTokenName, shareTokenName, shareTokenInitialAmount, digitsInShareToken, true), ScriptTransfer(contextObj.caller, shareTokenInitialAmount, shareTokenAssetId), StringEntry("share_token_id", toBase58String(shareTokenAssetId)), IntegerEntry("share_token_supply", shareTokenInitialAmount)]
86+[IntegerEntry("amountTokenA", tokenReceiveAmountA), IntegerEntry("amountTokenB", tokenReceiveAmountB), StringEntry("assetIdTokenA", assetIdTokenStringA), StringEntry("assetIdTokenB", assetIdTokenStringB), IntegerEntry("exchange_count", 0), BooleanEntry("status", true), IntegerEntry("comission", comission), IntegerEntry("comissionScaleDelimiter", comissionScaleDelimiter), StringEntry("version", version), Issue(shareTokenName, shareTokenName, shareTokenInitialAmount, digitsInShareToken, true), ScriptTransfer(contextObj.caller, shareTokenInitialAmount, shareTokenAssetId), BinaryEntry("share_token_id", shareTokenAssetId), IntegerEntry("share_token_supply", shareTokenInitialAmount)]
13387             }
13488     }
13589 
13690 
13791 
13892 @Callable(contextObj)
139-func replenishmentWithTwoToken () = {
93+func replenishment () = {
14094     let paymentA = value(contextObj.payments[0])
14195     let paymentB = value(contextObj.payments[1])
14296     let assetIdReceivedA = paymentA.assetId
14397     let tokenReceiveAmountA = paymentA.amount
14498     let assetIdReceivedB = paymentB.assetId
14599     let tokenReceiveAmountB = paymentB.amount
146-    let invariantCalcualated = invariantCalc((dAppTokensAmountA + tokenReceiveAmountA), (dAppTokensAmountB + tokenReceiveAmountB))
100+    let dAppTokensAmountA = getIntegerValue(this, "amountTokenA")
101+    let dAppTokensAmountB = getIntegerValue(this, "amountTokenB")
147102     if (if ((assetIdReceivedA != assetIdTokenA))
148103         then true
149104         else (assetIdReceivedB != assetIdTokenB))
150105         then throw("incorrect assets")
151106         else {
152-            let tokenRatio = (fraction(tokenReceiveAmountA, (1000000000000 * 1000), dAppTokensAmountA) / fraction(dAppTokensAmountB, 1000000000000, tokenReceiveAmountB))
153-            if (!(if ((tokenRatio > 990))
154-                then (1010 > tokenRatio)
107+            let tokenRatio = (fraction(tokenReceiveAmountA, (1000000000000 * 100000), dAppTokensAmountA) / fraction(dAppTokensAmountB, 1000000000000, tokenReceiveAmountB))
108+            if (!(if ((tokenRatio > 99990))
109+                then (100010 > tokenRatio)
155110                 else false))
156111                 then throw("incorrect assets amount")
157112                 else {
158113                     let shareTokenToPayAmount = fraction(tokenReceiveAmountA, tokenShareSupply, dAppTokensAmountA)
159114                     if ((shareTokenToPayAmount == 0))
160115                         then throw("you try replansish with very small amount")
161-                        else [Reissue(assetIdTokenShare, shareTokenToPayAmount, true), ScriptTransfer(contextObj.caller, shareTokenToPayAmount, assetIdTokenShare), IntegerEntry("share_token_supply", (tokenShareSupply + shareTokenToPayAmount)), IntegerEntry("amountTokenA", (dAppTokensAmountA + tokenReceiveAmountA)), IntegerEntry("amountTokenB", (dAppTokensAmountB + tokenReceiveAmountB)), IntegerEntry("invariant", invariantCalcualated)]
116+                        else [Reissue(assetIdTokenShare, shareTokenToPayAmount, true), ScriptTransfer(contextObj.caller, shareTokenToPayAmount, assetIdTokenShare), IntegerEntry("share_token_supply", (tokenShareSupply + shareTokenToPayAmount)), IntegerEntry("amountTokenA", (dAppTokensAmountA + tokenReceiveAmountA)), IntegerEntry("amountTokenB", (dAppTokensAmountB + tokenReceiveAmountB))]
162117                     }
163118             }
164119     }
165120 
166121 
167122 
168123 @Callable(contextObj)
169-func replanishmentWithOneToken (tokenAamountWithOldInvariantNewPrice,tokenBamountWithOldInvariantNewPrice) = {
124+func replanishmentWithOneToken () = {
170125     let payment = value(contextObj.payments[0])
171126     let assetIdReceived = payment.assetId
172127     let tokenReceiveAmount = payment.amount
173128     if ((assetIdReceived == assetIdTokenA))
174129         then {
175-            let newAmountTokenA = (dAppTokensAmountA + tokenReceiveAmount)
176-            let newInvariant = invariantCalc(newAmountTokenA, dAppTokensAmountB)
177-            let priceAtoBwith8digits = fraction(newAmountTokenA, scaleValue8, dAppTokensAmountB)
178-            let isCorrectPriceRation = fraction(tokenBamountWithOldInvariantNewPrice, priceAtoBwith8digits, tokenAamountWithOldInvariantNewPrice)
179-            if (if ((isCorrectPriceRation > ratioThresholdMax))
180-                then true
181-                else (ratioThresholdMin > isCorrectPriceRation))
182-                then throw("incorrect function args: price")
183-                else {
184-                    let calculatedInvariantWithNewPrice = invariantCalc(tokenAamountWithOldInvariantNewPrice, tokenBamountWithOldInvariantNewPrice)
185-                    let isCorrectInvariantRation = fraction(calculatedInvariantWithNewPrice, scaleValue8, invariant)
186-                    if (if ((isCorrectInvariantRation > ratioThresholdMax))
187-                        then true
188-                        else (ratioThresholdMin > isCorrectInvariantRation))
189-                        then throw("incorrect function args: invariant")
190-                        else {
191-                            let newTokenShareSupply = fraction(tokenBamountWithOldInvariantNewPrice, tokenShareSupply, dAppTokensAmountB)
192-                            let shareTokenToPayAmount = (newTokenShareSupply - tokenShareSupply)
193-[Reissue(assetIdTokenShare, shareTokenToPayAmount, true), ScriptTransfer(contextObj.caller, shareTokenToPayAmount, assetIdTokenShare), IntegerEntry("share_token_supply", (tokenShareSupply + shareTokenToPayAmount)), IntegerEntry("amountTokenA", newAmountTokenA), IntegerEntry("invariant", newInvariant)]
194-                            }
195-                    }
130+            let newAmountTokenA = (amountTokenA + tokenReceiveAmount)
131+            let priceAtoBwith8digits = fraction(newAmountTokenA, scaleValue8, amountTokenB)
132+            let tokenAmountBNewPriceOldInvariant = pow(fraction(amountTokenA, amountTokenB, priceAtoBwith8digits), 0, 5, 1, 0, HALFDOWN)
133+            let newTokenShareSupply = fraction(amountTokenB, tokenShareSupply, tokenAmountBNewPriceOldInvariant)
134+            let shareTokenToPayAmount = (newTokenShareSupply - tokenShareSupply)
135+[Reissue(assetIdTokenShare, shareTokenToPayAmount, true), ScriptTransfer(contextObj.caller, shareTokenToPayAmount, assetIdTokenShare), IntegerEntry("share_token_supply", (tokenShareSupply + shareTokenToPayAmount)), IntegerEntry("amountTokenA", newAmountTokenA)]
196136             }
197137         else if ((assetIdReceived == assetIdTokenB))
198138             then {
199-                let newAmountTokenB = (dAppTokensAmountB + tokenReceiveAmount)
200-                let newInvariant = invariantCalc(dAppTokensAmountA, newAmountTokenB)
201-                let priceAtoBwith8digits = fraction(dAppTokensAmountA, scaleValue8, newAmountTokenB)
202-                let isCorrectPriceRation = fraction(tokenBamountWithOldInvariantNewPrice, priceAtoBwith8digits, tokenAamountWithOldInvariantNewPrice)
203-                if (if ((isCorrectPriceRation > ratioThresholdMax))
204-                    then true
205-                    else (ratioThresholdMin > isCorrectPriceRation))
206-                    then throw("incorrect function args: price")
207-                    else {
208-                        let calculatedInvariantWithNewPrice = invariantCalc(tokenAamountWithOldInvariantNewPrice, tokenBamountWithOldInvariantNewPrice)
209-                        let isCorrectInvariantRation = fraction(calculatedInvariantWithNewPrice, scaleValue8, invariant)
210-                        if (if ((isCorrectInvariantRation > ratioThresholdMax))
211-                            then true
212-                            else (ratioThresholdMin > isCorrectInvariantRation))
213-                            then throw("incorrect function args: invariant")
214-                            else {
215-                                let newTokenShareSupply = fraction(tokenBamountWithOldInvariantNewPrice, tokenShareSupply, dAppTokensAmountB)
216-                                let shareTokenToPayAmount = (newTokenShareSupply - tokenShareSupply)
217-[Reissue(assetIdTokenShare, shareTokenToPayAmount, true), ScriptTransfer(contextObj.caller, shareTokenToPayAmount, assetIdTokenShare), IntegerEntry("share_token_supply", (tokenShareSupply + shareTokenToPayAmount)), IntegerEntry("amountTokenB", newAmountTokenB), IntegerEntry("invariant", newInvariant)]
218-                                }
219-                        }
139+                let newAmountTokenB = (amountTokenB + tokenReceiveAmount)
140+                let priceAtoBwith8digits = fraction(amountTokenA, scaleValue8, newAmountTokenB)
141+                let tokenAmountBNewPriceOldInvariant = pow(fraction(amountTokenA, amountTokenB, priceAtoBwith8digits), 0, 5, 1, 0, HALFDOWN)
142+                let newTokenShareSupply = fraction(amountTokenB, tokenShareSupply, tokenAmountBNewPriceOldInvariant)
143+                let shareTokenToPayAmount = (newTokenShareSupply - tokenShareSupply)
144+[Reissue(assetIdTokenShare, shareTokenToPayAmount, true), ScriptTransfer(contextObj.caller, shareTokenToPayAmount, assetIdTokenShare), IntegerEntry("share_token_supply", (tokenShareSupply + shareTokenToPayAmount)), IntegerEntry("amountTokenB", newAmountTokenB)]
220145                 }
221146             else throw("incorrect assets in payment")
222147     }
223148 
224149 
225150 
226151 @Callable(contextObj)
227152 func withdraw () = {
153+    let dAppTokensAmountA = getIntegerValue(this, "amountTokenA")
154+    let dAppTokensAmountB = getIntegerValue(this, "amountTokenB")
228155     let payment = value(contextObj.payments[0])
229156     let assetIdReceived = payment.assetId
230157     let tokenReceiveAmount = payment.amount
231158     if ((assetIdTokenShare != assetIdReceived))
232159         then throw(("you need to attach share token for this dApp " + toBase58String(assetIdTokenShare)))
233160         else {
234161             let tokensToPayA = fraction(tokenReceiveAmount, dAppTokensAmountA, tokenShareSupply)
235162             let tokensToPayB = fraction(tokenReceiveAmount, dAppTokensAmountB, tokenShareSupply)
236-            let invariantCalcualated = invariantCalc((dAppTokensAmountA - tokensToPayA), (dAppTokensAmountB - tokensToPayB))
237-[IntegerEntry("amountTokenA", (dAppTokensAmountA - tokensToPayA)), IntegerEntry("amountTokenB", (dAppTokensAmountB - tokensToPayB)), IntegerEntry("share_token_supply", (tokenShareSupply - tokenReceiveAmount)), ScriptTransfer(contextObj.caller, tokensToPayA, assetIdTokenA), ScriptTransfer(contextObj.caller, tokensToPayB, assetIdTokenB), Burn(assetIdTokenShare, tokenReceiveAmount), IntegerEntry("invariant", invariantCalcualated)]
163+[ScriptTransfer(contextObj.caller, tokensToPayA, assetIdTokenA), ScriptTransfer(contextObj.caller, tokensToPayB, assetIdTokenB), IntegerEntry("amountTokenA", (dAppTokensAmountA - tokensToPayA)), IntegerEntry("amountTokenB", (dAppTokensAmountB - tokensToPayB)), IntegerEntry("share_token_supply", (tokenShareSupply - tokenReceiveAmount)), Burn(assetIdTokenShare, tokenReceiveAmount)]
238164             }
239165     }
240166 
241167 
242168 
243169 @Callable(contextObj)
244-func exchanger (amountToSendEstimated,minTokenRecieveAmount) = {
245-    let amountTokenB = getIntegerValue(this, "amountTokenB")
246-    let amountTokenA = getIntegerValue(this, "amountTokenA")
170+func exchanger (minTokenRecieve) = {
247171     let payment = value(contextObj.payments[0])
248172     let assetIdReceived = payment.assetId
249173     let tokenReceiveAmount = payment.amount
250-    let count =     match getInteger(this, "exchange_count") {
251-        case i: Int => 
252-            (value(getInteger(this, "exchange_count")) + i)
253-        case _ => 
254-            0
255-    }
174+    let count = value(getInteger(this, "exchange_count"))
256175     if ((assetIdReceived == assetIdTokenB))
257176         then {
258-            let tokenSendAmount = calculateHowManySendTokenA(amountToSendEstimated, minTokenRecieveAmount, amountTokenA, amountTokenB, tokenReceiveAmount)
259-            let assetIdSent = assetIdTokenA
260-[IntegerEntry("amountTokenA", (amountTokenA - tokenSendAmount)), IntegerEntry("amountTokenB", (amountTokenB + tokenReceiveAmount)), IntegerEntry("exchange_count", (count + 1)), IntegerEntry("invariant", invariantCalc((amountTokenA - tokenSendAmount), (amountTokenB + tokenReceiveAmount))), ScriptTransfer(contextObj.caller, tokenSendAmount, assetIdSent)]
177+            let tokenSendAmount = ((fraction(amountTokenA, tokenReceiveAmount, (tokenReceiveAmount + amountTokenB)) * (comissionScaleDelimiter - comission)) / comissionScaleDelimiter)
178+            if ((minTokenRecieve > tokenSendAmount))
179+                then throw("Price has changed dramaticaly. Receiving token amount don't satisfy specified price level")
180+                else {
181+                    let assetIdSent = assetIdTokenA
182+[IntegerEntry("amountTokenA", (amountTokenA - tokenSendAmount)), IntegerEntry("amountTokenB", (amountTokenB + tokenReceiveAmount)), IntegerEntry("exchange_count", (count + 1)), ScriptTransfer(contextObj.caller, tokenSendAmount, assetIdSent)]
183+                    }
261184             }
262185         else if ((assetIdReceived == assetIdTokenA))
263186             then {
264-                let tokenSendAmount = calculateHowManySendTokenB(amountToSendEstimated, minTokenRecieveAmount, amountTokenA, amountTokenB, tokenReceiveAmount)
265-                let assetIdSent = assetIdTokenB
266-[IntegerEntry("amountTokenA", (amountTokenA + tokenReceiveAmount)), IntegerEntry("amountTokenB", (amountTokenB - tokenSendAmount)), IntegerEntry("exchange_count", (count + 1)), IntegerEntry("invariant", invariantCalc((amountTokenA + tokenReceiveAmount), (amountTokenB - tokenSendAmount))), ScriptTransfer(contextObj.caller, tokenSendAmount, assetIdSent)]
187+                let tokenSendAmount = ((fraction(amountTokenB, tokenReceiveAmount, (tokenReceiveAmount + amountTokenA)) * (comissionScaleDelimiter - comission)) / comissionScaleDelimiter)
188+                if ((minTokenRecieve > tokenSendAmount))
189+                    then throw("Price has changed dramaticaly. Receiving token amount don't satisfy specified price level")
190+                    else {
191+                        let assetIdSent = assetIdTokenB
192+[IntegerEntry("amountTokenA", (amountTokenA + tokenReceiveAmount)), IntegerEntry("amountTokenB", (amountTokenB - tokenSendAmount)), IntegerEntry("exchange_count", (count + 1)), ScriptTransfer(contextObj.caller, tokenSendAmount, assetIdSent)]
193+                        }
267194                 }
268195             else throw("Asset is not allowed")
269196     }
270197 
271198 
github/deemru/w8io/6500d08 
56.74 ms ◑