src/main.rs


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mod ast;
mod checker;
mod parser;

use tracing_subscriber::{layer::SubscriberExt, util::SubscriberInitExt};
use tracing_tree::HierarchicalLayer;

fn main() {
    tracing_subscriber::registry()
        .with(
            HierarchicalLayer::new(2)
                .with_targets(false)
                .with_bracketed_fields(true),
        )
        .init();

    let src = r#"

let set X = record { .b : Bool, .n : Nat }

let element x : X = { .b = true, .n = 41, .x = 3.14 }

let signature Graph = theory {
    .Node :: Set,
    .Edge :: (s : Node) (t : Node) -> Set
}

let instance natPoset :: Graph = {
    .Node = Nat,
    .Edge = for (s : Nat) (t : Nat), Bool
}

let element node : set(natPoset .Node) = 7
"#;
    let programme = parser::parser::program(src);

    assert!(programme.is_ok());
    let programme = programme.unwrap();
    println!("Parsed:\n```\n{}\n```\n", programme);

    if let Err(e) = programme.check() {
        println!("{}", e);
    }
}