Bruno BELANYI
ffd6a20a30
It is unfortunate that both [1] and [2] conspire to make this code way worse than it could otherwise be with a saner (de)serialization format. We both need to introduce `TransactionRecord` due to tagged enums not being powerful enough in CSV, and make its `amount` field optional to deal with the varying number of fields for each kind of transaction. [1]: https://github.com/BurntSushi/rust-csv/issues/211 [2]: https://github.com/BurntSushi/rust-csv/issues/172
28 lines
1 KiB
Rust
28 lines
1 KiB
Rust
//! Core types used in the processing of payments.
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use serde::{Deserialize, Serialize};
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use serde_with::{serde_as, DisplayFromStr};
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/// Clients are anonymous, identified by globally unique ids. "16-bit ought to be enough for
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/// anyone".
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#[derive(
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Copy, Clone, Debug, Default, PartialEq, Eq, PartialOrd, Ord, Hash, Deserialize, Serialize,
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)]
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#[serde(transparent)]
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pub struct ClientId(pub u16);
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/// Transactions are identified by a globally unique id. 32 bit is sufficient for our puposes.
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#[derive(
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Copy, Clone, Debug, Default, PartialEq, Eq, PartialOrd, Ord, Hash, Deserialize, Serialize,
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)]
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#[serde(transparent)]
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pub struct TxId(pub u32);
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/// Amounts are represented as exact decimals, up to four places past the decimal.
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/// For ease of implementation, make use of [fpdec::Decimal] instead of implementing a custom
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/// fixed-point number.
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#[serde_as]
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#[derive(Copy, Clone, Debug, Default, PartialEq, Eq, PartialOrd, Ord, Deserialize, Serialize)]
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#[serde(transparent)]
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pub struct TxAmount(#[serde_as(as = "DisplayFromStr")] pub fpdec::Decimal);
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