quant-system-core 0.3.2

Core trading domain - engine, raw signals, management policy, sizing, and currency conversion
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36

use thiserror::Error;

/// Errors produced by the core trade engine.
#[derive(Debug, Error)]
pub enum CoreError {
    #[error("position not found: {0}")]
    PositionNotFound(String),

    #[error("group not found: {0}")]
    GroupNotFound(String),

    #[error("invalid action: {0}")]
    InvalidAction(String),

    #[error("take-profit target {price} not found for position {position_id}")]
    TargetNotFound { position_id: String, price: f64 },

    #[error("take-profit target {price} has already triggered for position {position_id}")]
    TargetAlreadyTriggered { position_id: String, price: f64 },

    #[error("no price available for symbol: {0}")]
    NoPriceAvailable(String),

    #[error("position not in expected state: id={id}, expected={expected}, actual={actual}")]
    InvalidState {
        id: String,
        expected: String,
        actual: String,
    },

    #[error("{0}")]
    Other(String),
}

/// Convenience alias used throughout qs-core.
pub type Result<T> = std::result::Result<T, CoreError>;