Struct ThreeBarPattern 

pub struct ThreeBarPattern { /* private fields */ }

Three Bar Pattern — detects Three White Soldiers (bullish) and Three Black Crows (bearish) candlestick patterns.

Three White Soldiers (output +1):

• Three consecutive bullish bars (close > open)
• Each bar closes higher than the previous
• Each bar opens within the prior bar’s body

Three Black Crows (output -1):

• Three consecutive bearish bars (close < open)
• Each bar closes lower than the previous
• Each bar opens within the prior bar’s body

Outputs 0 if no pattern is detected.

Returns SignalValue::Unavailable until 3 bars have been seen.

Example

use fin_primitives::signals::indicators::ThreeBarPattern;
use fin_primitives::signals::Signal;

let tbp = ThreeBarPattern::new("tbp").unwrap();
assert_eq!(tbp.period(), 3);

Implementations

impl ThreeBarPattern

pub fn new(name: impl Into<String>) -> Result<Self, FinError>

Errors

Never errors — provided for API consistency.

Trait Implementations

impl Signal for ThreeBarPattern

fn name(&self) -> &str

Returns the name of this signal (unique within a pipeline).

fn period(&self) -> usize

Returns the number of bars required before the signal produces a value.

fn is_ready(&self) -> bool

Returns true if the signal has accumulated enough bars to produce a value.

fn update(&mut self, bar: &BarInput) -> Result<SignalValue, FinError>

Updates the signal with a BarInput and returns the current value.

fn reset(&mut self)

Resets the signal to its initial state as if no bars had been seen.

fn update_bar(&mut self, bar: &OhlcvBar) -> Result<SignalValue, FinError>

Convenience wrapper: converts bar to BarInput and calls Self::update.

fn warm_up(&mut self, bars: &[BarInput]) -> Result<SignalValue, FinError>

Feed a slice of historical bars to prime the indicator in one call.