Struct PySource 

pub(crate) struct PySource {
    object: Py<PyAny>,
    name: String,
}

A Python object as a source: whichever of fetch, recipes, calendars it has. Each call takes the GIL; an exception it raises becomes a SourceError naming the object’s type.

Fields

object: Py<PyAny>

name: String

Implementations

impl PySource

pub(crate) fn new(object: &Bound<'_, PyAny>) -> PyResult<Self>

pub(crate) fn has(&self, py: Python<'_>, method: &str) -> bool

fn failed(&self, py: Python<'_>, e: &PyErr) -> SourceError

fn malformed(&self, detail: impl Into<String>) -> SourceError

fn call<'py>( &self, py: Python<'py>, method: &str, args: impl IntoPy<Py<PyTuple>>, ) -> Result<Bound<'py, PyAny>, SourceError>

Calls method; a coroutine back is closed and refused, since a port never drives an event loop.

Trait Implementations

impl CalendarSource for PySource

fn calendars(&self) -> Result<Vec<CalendarSpec>, SourceError>

Every calendar the source holds.

impl MarketDataSource for PySource

fn fetch( &self, demand: &Demand, as_of: NaiveDate, ) -> Result<MarketData, SourceError>

What the source holds of demand, observed on or before as_of. Whatever it does not hold it leaves out.

impl RecipeSource for PySource

fn recipes(&self, ask: &RecipeAsk) -> Result<Vec<RecipeSpec>, SourceError>

The recipes the source holds for the keys ask names. A recipe for a key not asked about is accepted and used like any other.