rgwml 2.0.0

Typed, local-first tabular data library with columnar in-memory storage.
Documentation 
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use std::sync::Arc;

use super::ColumnSelector;

#[derive(Clone, Debug, PartialEq)]
pub enum Literal {
    Bool(bool),
    I64(i64),
    F64(f64),
    Utf8(Arc<str>),
    Date32(i32),
    TimestampMs(i64),
}

impl From<&str> for Literal {
    fn from(value: &str) -> Self {
        Self::Utf8(Arc::from(value))
    }
}

impl From<String> for Literal {
    fn from(value: String) -> Self {
        Self::Utf8(Arc::from(value))
    }
}

#[derive(Clone, Copy, Debug, PartialEq, Eq)]
pub enum CompareOp {
    Eq,
    NotEq,
    Lt,
    Lte,
    Gt,
    Gte,
    Contains,
    StartsWith,
    EndsWith,
    IsNull,
    IsNotNull,
}

#[derive(Clone, Debug, PartialEq)]
pub enum Predicate {
    Comparison {
        column: ColumnSelector,
        op: CompareOp,
        value: Option<Literal>,
    },
    And(Vec<Predicate>),
    Or(Vec<Predicate>),
    Not(Box<Predicate>),
}