Struct FeedCapabilities 

#[non_exhaustive]
pub struct FeedCapabilities {
    pub timeframes: Option<Vec<Timeframe>>,
    pub exchanges: Option<Vec<String>>,
    pub symbol_types: Option<Vec<SymbolType>>,
    pub services: Option<Vec<FeedService>>,
}

What a feed offers as a whole, answered by Datafeed::capabilities. Each list distinguishes None, which the feed does not report and so restricts nothing, from Some of an empty list, which it reports as offering none. Use declares when a service needs explicit confirmation.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

timeframes: Option<Vec<Timeframe>>

Intervals Datafeed::history answers for at least some symbol. A symbol’s own supported_timeframes narrows them further.

exchanges: Option<Vec<String>>

Exchanges whose symbols the feed serves.

symbol_types: Option<Vec<SymbolType>>

Classes of symbol the feed serves.

services: Option<Vec<FeedService>>

Optional services the feed supplies for at least some symbol. A symbol’s own services narrows them further. Services absent from a reported list are unavailable.

Implementations

impl FeedCapabilities

pub fn new() -> Self

Reports no capability, which restricts nothing.

pub fn with_timeframes( self, timeframes: impl IntoIterator<Item = Timeframe>, ) -> Self

Sets timeframes.

pub fn with_exchanges(self, exchanges: impl IntoIterator<Item = String>) -> Self

Sets exchanges.

pub fn with_symbol_types( self, types: impl IntoIterator<Item = SymbolType>, ) -> Self

Sets symbol_types.

pub fn with_services( self, services: impl IntoIterator<Item = FeedService>, ) -> Self

Sets services.

pub fn offers(&self, service: FeedService) -> bool

Whether to offer the controls of service: it is listed, or the feed reports no list.

pub fn declares(&self, service: FeedService, instrument: &Instrument) -> bool

Whether service is explicitly reported for instrument. Its own list takes precedence; without one, the feed’s list applies. A reported feed list must also include the service. With neither list reported, this returns false, unlike offers.

Trait Implementations

impl Clone for FeedCapabilities

fn clone(&self) -> FeedCapabilities

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for FeedCapabilities

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for FeedCapabilities

fn default() -> FeedCapabilities

Returns the “default value” for a type.

impl PartialEq for FeedCapabilities

fn eq(&self, other: &FeedCapabilities) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for FeedCapabilities