duckling 0.4.0

A Rust port of Facebook's Duckling library for parsing natural language into structured data
Documentation 
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use crate::pattern::regex;
use crate::types::{Rule, TokenData};

use super::Grain;

pub fn rules() -> Vec<Rule> {
    vec![
        Rule {
            name: "second (grain)".to_string(),
            pattern: vec![regex(r"δε[υύ]τερ([οό]λ[εέ]πτ)?(ου?|α|ων)")],
            production: Box::new(|_| Some(TokenData::TimeGrain(Grain::Second))),
        },
        Rule {
            name: "minute (grain)".to_string(),
            pattern: vec![regex(r"λεπτ(o|όν?|ού|ά|ών)")],
            production: Box::new(|_| Some(TokenData::TimeGrain(Grain::Minute))),
        },
        Rule {
            name: "hour (grain)".to_string(),
            pattern: vec![regex(r"[ωώ](ρ(ας?|ες|ών))?")],
            production: Box::new(|_| Some(TokenData::TimeGrain(Grain::Hour))),
        },
        Rule {
            name: "day (grain)".to_string(),
            pattern: vec![regex(r"η?μέρ(ας?|ες|ών)")],
            production: Box::new(|_| Some(TokenData::TimeGrain(Grain::Day))),
        },
        Rule {
            name: "week (grain)".to_string(),
            pattern: vec![regex(r"ε?βδομάδ(ας?ν?|ες|ων)")],
            production: Box::new(|_| Some(TokenData::TimeGrain(Grain::Week))),
        },
        Rule {
            name: "month (grain)".to_string(),
            pattern: vec![regex(r"μήν(ας?|ες|ών)")],
            production: Box::new(|_| Some(TokenData::TimeGrain(Grain::Month))),
        },
        Rule {
            name: "quarter (grain)".to_string(),
            pattern: vec![regex(r"τρ[ιί]μ[ηή]ν(ου?|α|ων)")],
            production: Box::new(|_| Some(TokenData::TimeGrain(Grain::Quarter))),
        },
        Rule {
            name: "year (grain)".to_string(),
            pattern: vec![regex(r"έτ(ου?ς|η|ών)|χρ[οό]ν(ο[ιςυ]?|ι([αά]|ές)|ι?ών)")],
            production: Box::new(|_| Some(TokenData::TimeGrain(Grain::Year))),
        },
    ]
}