79 lines
1.8 KiB
Plaintext
79 lines
1.8 KiB
Plaintext
module Initial.Cash where
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import DA.Assert
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template Position
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with
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issuer : Party
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owner : Party
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quantity : Decimal
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obs : [Party]
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where
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signatory [issuer, owner]
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observer obs
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ensure quantity > 0.0
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choice Transfer : ContractId Position
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with
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newOwner : Party
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controller [owner, newOwner]
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do
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create this with
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owner = newOwner
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obs = []
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choice Propose_Transfer : ContractId TransferProposal
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with
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newOwner : Party
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controller owner
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do
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create TransferProposal with
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position = this
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newOwner
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choice Split : (ContractId Position, [ContractId Position])
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with
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splitQuantities : [Decimal]
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controller owner
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do
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remCid <- create this with quantity = this.quantity - sum splitQuantities
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splitCids <- forA splitQuantities (\splitQuantity -> create this with
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quantity = splitQuantity
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)
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return (remCid, splitCids)
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choice Merge : ContractId Position
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with
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otherCids : [ContractId Position]
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controller owner
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do
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quantities <- forA otherCids (\otherCid -> do
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other <- fetch otherCid
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other === this with
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quantity = other.quantity
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obs = other.obs
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archive otherCid
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return other.quantity)
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create this with
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quantity = quantity + sum quantities
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template TransferProposal
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with
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position : Position
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newOwner : Party
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where
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signatory (signatory position)
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observer newOwner::(observer position)
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choice Accept : ContractId Position
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controller newOwner
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do
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create position with
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owner = newOwner
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obs = []
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choice Cancel : ContractId Position
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controller position.owner
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do
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create position
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