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feat: TA-Lib candlestick patterns — Doji family (part 3 of 9) (#134)

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* feat: add Doji-family candlestick patterns

Five single-/two-bar Doji patterns, all `Input = Candle`, `Output = f64`:

- Doji Star (CDLDOJISTAR) — a long body followed by a doji gapping away in the
  trend direction; bullish +1 (after a black bar), bearish -1 (after a white bar).
- Dragonfly Doji (CDLDRAGONFLYDOJI) — a doji opening and closing at the high with
  a long lower shadow; bullish +1.
- Gravestone Doji (CDLGRAVESTONEDOJI) — a doji opening and closing at the low with
  a long upper shadow; bearish -1.
- Long-Legged Doji (CDLLONGLEGGEDDOJI) — a doji with long shadows on both sides; a
  non-directional indecision flag, +1 on detection.
- Rickshaw Man (CDLRICKSHAWMAN) — a long-legged doji with the body centred in the
  range; a non-directional indecision flag, +1 on detection.

Counter 254 -> 259 (mod-count == lib counted block; FAMILIES total 249 -> 254).

* chore: sync indicator count to 259

---------

Co-authored-by: wickra-bot <wickra-bot@users.noreply.github.com>
This commit is contained in:
kingchenc
2026-06-02 16:45:08 +02:00
committed by GitHub
co-authored by wickra-bot
parent 03ceac1f3b
commit 244d754707
19 changed files with 1051 additions and 39 deletions
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fuzz/fuzz_targets/indicator_update_candle.rs
+6 -1
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@@ -23,7 +23,7 @@
use libfuzzer_sys::fuzz_target;
use wickra_core::{
AbandonedBaby, AccelerationBands, AcceleratorOscillator, AdOscillator, Adl, AdvanceBlock, Adx, Adxr, Alligator, AnchoredVwap, Aroon, AroonOscillator, Atr, AtrBands, AtrTrailingStop, AwesomeOscillator, AwesomeOscillatorHistogram, BalanceOfPower, BatchExt, BeltHold, Breakaway, Camarilla, Candle, Cci, ChaikinMoneyFlow, ChaikinOscillator, ChaikinVolatility, ChandeKrollStop, ChandelierExit, ChoppinessIndex, ClassicPivots, Counterattack, DemandIndex, DemarkPivots, Doji, Donchian, DonchianStop, EaseOfMovement, Engulfing, Evwma, FibonacciPivots, ForceIndex, FractalChaosBands, GarmanKlassVolatility, Hammer, HangingMan, Harami, HeikinAshi, HiLoActivator, HurstChannel, Ichimoku, IdenticalThreeCrows, Indicator, Inertia, InitialBalance, InvertedHammer, Keltner, Kvo, MarketFacilitationIndex, Marubozu, MassIndex, MedianPrice, Mfi, MorningEveningStar, Natr, Nvi, Obv, OpeningRange, ParkinsonVolatility, Pgo, PiercingDarkCloud, Psar, Pvi, RogersSatchellVolatility, RollingVwap, Rvi, Rwi, ShootingStar, Smi, SpinningTop, StarcBands, Stochastic, SuperTrend, TdCombo, TdCountdown, TdDeMarker, TdDifferential, TdLines, TdOpen, TdPressure, TdRangeProjection, TdRei, TdRiskLevel, TdSequential, TdSetup, ThreeInside, ThreeLineStrike, ThreeOutside, ThreeSoldiersOrCrows, ThreeStarsInSouth, TrueRange, Tsv, TtmSqueeze, Tweezer, TwoCrows, TypicalPrice, UltimateOscillator, UpsideGapTwoCrows, ValueArea, VoltyStop, VolumeOscillator, VolumePriceTrend, Vortex, Vwap, VwapStdDevBands, Vwma, Vzo, WaveTrend, WeightedClose, WilliamsFractals, WilliamsR, WoodiePivots, YangZhangVolatility, YoyoExit, ZigZag
AbandonedBaby, AccelerationBands, AcceleratorOscillator, AdOscillator, Adl, AdvanceBlock, Adx, Adxr, Alligator, AnchoredVwap, Aroon, AroonOscillator, Atr, AtrBands, AtrTrailingStop, AwesomeOscillator, AwesomeOscillatorHistogram, BalanceOfPower, BatchExt, BeltHold, Breakaway, Camarilla, Candle, Cci, ChaikinMoneyFlow, ChaikinOscillator, ChaikinVolatility, ChandeKrollStop, ChandelierExit, ChoppinessIndex, ClassicPivots, Counterattack, DemandIndex, DemarkPivots, Doji, DojiStar, Donchian, DonchianStop, DragonflyDoji, EaseOfMovement, Engulfing, Evwma, FibonacciPivots, ForceIndex, FractalChaosBands, GarmanKlassVolatility, GravestoneDoji, Hammer, HangingMan, Harami, HeikinAshi, HiLoActivator, HurstChannel, Ichimoku, IdenticalThreeCrows, Indicator, Inertia, InitialBalance, InvertedHammer, Keltner, Kvo, LongLeggedDoji, MarketFacilitationIndex, Marubozu, MassIndex, MedianPrice, Mfi, MorningEveningStar, Natr, Nvi, Obv, OpeningRange, ParkinsonVolatility, Pgo, PiercingDarkCloud, Psar, Pvi, RickshawMan, RogersSatchellVolatility, RollingVwap, Rvi, Rwi, ShootingStar, Smi, SpinningTop, StarcBands, Stochastic, SuperTrend, TdCombo, TdCountdown, TdDeMarker, TdDifferential, TdLines, TdOpen, TdPressure, TdRangeProjection, TdRei, TdRiskLevel, TdSequential, TdSetup, ThreeInside, ThreeLineStrike, ThreeOutside, ThreeSoldiersOrCrows, ThreeStarsInSouth, TrueRange, Tsv, TtmSqueeze, Tweezer, TwoCrows, TypicalPrice, UltimateOscillator, UpsideGapTwoCrows, ValueArea, VoltyStop, VolumeOscillator, VolumePriceTrend, Vortex, Vwap, VwapStdDevBands, Vwma, Vzo, WaveTrend, WeightedClose, WilliamsFractals, WilliamsR, WoodiePivots, YangZhangVolatility, YoyoExit, ZigZag
};
/// Convert a flat `f64` stream into a `Vec<Candle>` by chunking it into
@@ -278,6 +278,11 @@ fuzz_target!(|data: Vec<f64>| {
}
// --- Candlestick Patterns (family 14) ---
drive(RickshawMan::new, &candles);
drive(LongLeggedDoji::new, &candles);
drive(GravestoneDoji::new, &candles);
drive(DragonflyDoji::new, &candles);
drive(DojiStar::new, &candles);
drive(Counterattack::new, &candles);
drive(Breakaway::new, &candles);
drive(BeltHold::new, &candles);