claudiomaradonna/plutus-pioneer-program
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first draft for week #2

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Lars Brünjes 2021-07-07 23:29:58 +02:00
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commit 4a09b7e692
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10 changed files with 31 additions and 60 deletions
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12
README.md
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@ -12,9 +12,16 @@
- Running an example auction contract on a local Playground.
- Homework.
- [Lecture #2]()
- Triggering change.
- Low-level, untyped on-chain validation scripts.
- High-level, typed on-chain validation scripts.
## Code Examples
- Lecture #1: [English Auction](code/week01)
- Lecture #2: [Simple validation](code/week02)
## Exercises
@ -32,6 +39,11 @@
- Compile.
- Simulate various auction scenarios.
- Week #2
- Fix and complete the code in the [Homework1](code/week02/src/Week02/Homework1.hs) module.
- Fix and complete the code in the [Homework2](code/week02/src/Week02/Homework2.hs) module.
## Some Plutus Modules
- [`Language.Marlowe.Semantics`](https://github.com/input-output-hk/plutus/blob/master/marlowe/src/Language/Marlowe/Semantics.hs), contains Marlowe types and semantics.

8
code/week02/src/Week02/Burn.hs
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@ -8,8 +8,6 @@
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE TypeOperators #-}
{-# OPTIONS_GHC -fno-warn-unused-imports #-}
module Week02.Burn where
import Control.Monad hiding (fmap)
@ -27,12 +25,14 @@ import Ledger.Ada as Ada
import Playground.Contract (printJson, printSchemas, ensureKnownCurrencies, stage)
import Playground.TH (mkKnownCurrencies, mkSchemaDefinitions)
import Playground.Types (KnownCurrency (..))
import Prelude (Semigroup (..), String)
import Prelude (IO, Semigroup (..), String)
import Text.Printf (printf)
{-# OPTIONS_GHC -fno-warn-unused-imports #-}
{-# INLINABLE mkValidator #-}
mkValidator :: Data -> Data -> Data -> ()
mkValidator _ _ _ = traceError "NO WAY!"
mkValidator _ _ _ = traceError "BURNT!"
validator :: Validator
validator = mkValidatorScript $$(PlutusTx.compile [|| mkValidator ||])

6
code/week02/src/Week02/FortyTwo.hs
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@ -25,7 +25,7 @@ import Ledger.Ada as Ada
import Playground.Contract (printJson, printSchemas, ensureKnownCurrencies, stage)
import Playground.TH (mkKnownCurrencies, mkSchemaDefinitions)
import Playground.Types (KnownCurrency (..))
import Prelude (Semigroup (..), String)
import Prelude (IO, Semigroup (..), String)
import Text.Printf (printf)
{-# OPTIONS_GHC -fno-warn-unused-imports #-}
@ -57,13 +57,13 @@ give amount = do
logInfo @String $ printf "made a gift of %d lovelace" amount
grab :: forall w s e. AsContractError e => Integer -> Contract w s e ()
grab r = do
grab n = do
utxos <- utxoAt scrAddress
let orefs = fst <$> Map.toList utxos
lookups = Constraints.unspentOutputs utxos <>
Constraints.otherScript validator
tx :: TxConstraints Void Void
tx = mconcat [mustSpendScriptOutput oref $ Redeemer $ I r | oref <- orefs]
tx = mconcat [mustSpendScriptOutput oref $ Redeemer $ I n | oref <- orefs]
ledgerTx <- submitTxConstraintsWith @Void lookups tx
void $ awaitTxConfirmed $ txId ledgerTx
logInfo @String $ "collected gifts"

43
code/week02/src/Week02/Gift.hs
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@ -24,6 +24,8 @@ import Ledger.Ada as Ada
import Playground.Contract (printJson, printSchemas, ensureKnownCurrencies, stage)
import Playground.TH (mkKnownCurrencies, mkSchemaDefinitions)
import Playground.Types (KnownCurrency (..))
import Prelude (IO, Semigroup (..), String)
import Text.Printf (printf)
{-# OPTIONS_GHC -fno-warn-unused-imports #-}
@ -40,46 +42,6 @@ valHash = Scripts.validatorHash validator
scrAddress :: Ledger.Address
scrAddress = scriptAddress validator
{-
{-# INLINABLE mkValidator #-}
mkValidator :: Data -> Data -> Data -> ()
mkValidator _ _ _ = ()
validator :: Validator
validator = mkValidatorScript $$(PlutusTx.compile [|| mkValidator ||])
type GiftSchema =
Endpoint "give" Integer
.\/ Endpoint "grab" ()
@ -112,4 +74,3 @@ endpoints = (give' `select` grab') >> endpoints
mkSchemaDefinitions ''GiftSchema
mkKnownCurrencies []
-}

2
code/week02/src/Week02/Homework1.hs
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@ -26,7 +26,7 @@ import Ledger.Ada as Ada
import Playground.Contract (printJson, printSchemas, ensureKnownCurrencies, stage)
import Playground.TH (mkKnownCurrencies, mkSchemaDefinitions)
import Playground.Types (KnownCurrency (..))
import Prelude (Semigroup (..), String, undefined)
import Prelude (IO, Semigroup (..), String, undefined)
import Text.Printf (printf)
{-# INLINABLE mkValidator #-}

2
code/week02/src/Week02/Homework2.hs
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@ -30,7 +30,7 @@ import Ledger.Ada as Ada
import Playground.Contract (printJson, printSchemas, ensureKnownCurrencies, stage, ToSchema)
import Playground.TH (mkKnownCurrencies, mkSchemaDefinitions)
import Playground.Types (KnownCurrency (..))
import Prelude (Semigroup (..), String, undefined)
import Prelude (IO, Semigroup (..), String, undefined)
import Text.Printf (printf)
data MyRedeemer = MyRedeemer

8
code/week02/src/Week02/IsData.hs
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@ -17,6 +17,7 @@ import Data.Map as Map
import Data.Text (Text)
import Data.Void (Void)
import Plutus.Contract
import PlutusTx (Data (..))
import qualified PlutusTx
import PlutusTx.Prelude hiding (Semigroup(..), unless)
import Ledger hiding (singleton)
@ -26,17 +27,16 @@ import Ledger.Ada as Ada
import Playground.Contract (printJson, printSchemas, ensureKnownCurrencies, stage)
import Playground.TH (mkKnownCurrencies, mkSchemaDefinitions)
import Playground.Types (KnownCurrency (..))
import Prelude (Semigroup (..), Show, String)
import Prelude (IO, Semigroup (..), String)
import Text.Printf (printf)
newtype MySillyRedeemer = MySillyRedeemer Integer
deriving Show
PlutusTx.unstableMakeIsData ''MySillyRedeemer
{-# INLINABLE mkValidator #-}
mkValidator :: () -> MySillyRedeemer -> ScriptContext -> Bool
mkValidator () (MySillyRedeemer r) _ = traceIfFalse "wrong redeemer" $ r == 42
mkValidator _ (MySillyRedeemer r) _ = traceIfFalse "wrong redeemer" $ r == 42
data Typed
instance Scripts.ValidatorTypes Typed where
@ -77,7 +77,7 @@ grab r = do
lookups = Constraints.unspentOutputs utxos <>
Constraints.otherScript validator
tx :: TxConstraints Void Void
tx = mconcat [mustSpendScriptOutput oref $ Redeemer $ PlutusTx.toData $ MySillyRedeemer r | oref <- orefs]
tx = mconcat [mustSpendScriptOutput oref $ Redeemer $ PlutusTx.toData (MySillyRedeemer r) | oref <- orefs]
ledgerTx <- submitTxConstraintsWith @Void lookups tx
void $ awaitTxConfirmed $ txId ledgerTx
logInfo @String $ "collected gifts"

2
code/week02/src/Week02/Solution1.hs
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@ -28,7 +28,7 @@ import Ledger.Ada as Ada
import Playground.Contract (printJson, printSchemas, ensureKnownCurrencies, stage)
import Playground.TH (mkKnownCurrencies, mkSchemaDefinitions)
import Playground.Types (KnownCurrency (..))
import Prelude (Semigroup (..), String)
import Prelude (IO, Semigroup (..), String)
import Text.Printf (printf)
{-# INLINABLE mkValidator #-}

2
code/week02/src/Week02/Solution2.hs
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@ -30,7 +30,7 @@ import Ledger.Ada as Ada
import Playground.Contract (printJson, printSchemas, ensureKnownCurrencies, stage, ToSchema)
import Playground.TH (mkKnownCurrencies, mkSchemaDefinitions)
import Playground.Types (KnownCurrency (..))
import Prelude (Semigroup (..), String)
import Prelude (IO, Semigroup (..), String)
import Text.Printf (printf)
data MyRedeemer = MyRedeemer

6
code/week02/src/Week02/Typed.hs
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@ -27,14 +27,12 @@ import Ledger.Ada as Ada
import Playground.Contract (printJson, printSchemas, ensureKnownCurrencies, stage)
import Playground.TH (mkKnownCurrencies, mkSchemaDefinitions)
import Playground.Types (KnownCurrency (..))
import Prelude (Semigroup (..), String)
import Prelude (IO, Semigroup (..), String)
import Text.Printf (printf)
{-# INLINABLE mkValidator #-}
mkValidator :: () -> Integer -> ScriptContext -> Bool
mkValidator () r _
| r == 42 = True
| otherwise = False
mkValidator _ r _ = traceIfFalse "wrong redeemer" $ r == 42
data Typed
instance Scripts.ValidatorTypes Typed where