Module util 

Shared helpers: instrument ids, timestamps, decimals.

Functions

dec

google.type.Decimal -> [Dec], exactly: the text is parsed as it is, no f64 on the way. Empty, absent or unparseable -> None. The grammar of the message allows a sign, a leading or trailing point and an exponent.

dec0

Like dec but 0 for absent.

instrument_from_symbol

Instrument id from a Finam symbol (SBER@MISX). A symbol without @ gets an empty MIC.

money

google.type.Money -> (currency, amount), exactly. units and nanos carry the sign of the value.

no_instrument

Placeholder instrument for subscriptions that are not about one instrument (orders, account).

now_nanos

Wall clock now, in nanoseconds since the Unix epoch. Gives 0 when the clock is before the epoch.

price

dec as a [Price].

price0

dec0 as a [Price].

qty

dec as a [Qty].

qty0

dec0 as a [Qty].

symbol_of

SBER@MISX for the Finam API. Needs NativeId::SymbolMic, no network.

timestamps

Receive timestamps with the broker time attached when present.

to_decimal

A number -> google.type.Decimal, exactly. The text is plain (Rust never writes an exponent for a decimal), the scale is kept: 244.30 is sent as "244.30".

to_money

(currency, amount) -> google.type.Money, exactly. The reverse of money.

to_timestamp

Unix nanoseconds -> protobuf timestamp. Negative values give seconds < 0 and nanos >= 0, the protobuf way.

ts_nanos

Protobuf timestamp -> Unix nanoseconds. Saturates instead of overflowing on absurd values.