69 lines
2.2 KiB
Rust
69 lines
2.2 KiB
Rust
use budget::Budget;
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use chrono::prelude::{DateTime, Utc};
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use payment_plan::{Payment, PaymentPlan, Witness};
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use signature::Pubkey;
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use signature::Signature;
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/// The type of payment plan. Each item must implement the PaymentPlan trait.
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#[derive(Serialize, Deserialize, Debug, PartialEq, Eq, Clone)]
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pub enum Plan {
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/// The builtin contract language Budget.
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Budget(Budget),
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}
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// A proxy for the underlying DSL.
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impl PaymentPlan for Plan {
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fn final_payment(&self) -> Option<Payment> {
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match self {
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Plan::Budget(budget) => budget.final_payment(),
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}
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}
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fn verify(&self, spendable_tokens: i64) -> bool {
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match self {
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Plan::Budget(budget) => budget.verify(spendable_tokens),
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}
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}
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fn apply_witness(&mut self, witness: &Witness, from: &Pubkey) {
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match self {
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Plan::Budget(budget) => budget.apply_witness(witness, from),
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}
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}
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}
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/// A smart contract.
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#[derive(Serialize, Deserialize, Debug, PartialEq, Eq, Clone)]
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pub struct Contract {
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/// The number of tokens allocated to the `Plan` and any transaction fees.
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pub tokens: i64,
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pub plan: Plan,
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}
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#[derive(Serialize, Deserialize, Debug, PartialEq, Eq, Clone)]
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pub struct Vote {
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/// We send some gossip specific membership information through the vote to shortcut
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/// liveness voting
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/// The version of the CRDT struct that the last_id of this network voted with
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pub version: u64,
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/// The version of the CRDT struct that has the same network configuration as this one
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pub contact_info_version: u64,
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// TODO: add signature of the state here as well
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}
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/// An instruction to progress the smart contract.
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#[derive(Serialize, Deserialize, Debug, PartialEq, Eq, Clone)]
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pub enum Instruction {
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/// Declare and instantiate `Contract`.
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NewContract(Contract),
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/// Tell a payment plan acknowledge the given `DateTime` has past.
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ApplyTimestamp(DateTime<Utc>),
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/// Tell the payment plan that the `NewContract` with `Signature` has been
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/// signed by the containing transaction's `Pubkey`.
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ApplySignature(Signature),
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/// Vote for a PoH that is equal to the lastid of this transaction
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NewVote(Vote),
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}
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