nlp.rs

#[derive(Clone, Debug)]
pub enum Plural {
    All,
    Specific,
    Exactly(i64),
}

#[derive(Clone, Debug)]
pub enum Logical {
    And,
    Or,
    Conditional,
    Then,
    Causal,
}

#[derive(Clone, Debug)]
pub enum UnboundedNoun {
    Any(Box<Noun>),
    Within(Box<UnboundedNoun>, Box<Noun>),
    SetMembership(Box<UnboundedNoun>, Box<Set>),
}

#[derive(Clone, Debug)]
pub enum Noun {
    Just(String),
    Double(Box<Noun>, Box<Noun>),
    Ownership(Box<Noun>, Box<Noun>),
    And(Box<Noun>, Box<Noun>),
    Plural(Plural, Box<Noun>),
    Described(String, Box<Noun>),
    Bounded(String, UnboundedNoun),
}

#[derive(Clone, Debug)]
pub enum Verb {
    Nullary(String),
    Unary(String, Noun),
    Binary(String, Noun, Noun),
    Qualified(String, Box<Verb>),
    And(Box<Verb>, Box<Verb>),
    Or(Box<Verb>, Box<Verb>),
    Then(Box<Verb>, Box<Verb>),
    Conditional(Proposition, Box<Verb>),
}

#[derive(Clone, Debug)]
pub enum Set {
    Adjective(String),
    Superlative(String, Noun),
}

#[derive(Clone, Debug)]
pub enum Proposition {
    SetMembership(Noun, Set),
    Is(Noun, Noun),
    Ownership(Noun, Noun),
    Logical(Logical, Box<Proposition>, Box<Proposition>),
    Not(Box<Proposition>),
    Modified(String, Box<Proposition>),
}

#[derive(Clone, Debug)]
pub enum Question {
    Who(Noun),
    What(Noun),
    When(Noun),
    How(Noun),
    Why(Proposition),
    Is(Proposition),
    May(Proposition),
}

#[derive(Clone, Debug)]
pub enum Phrase {
    Command(Verb),
    Fact(Proposition),
    Question(Question),
}