euph 0.0.1

A functional stack-based programming language
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use std::mem;

use super::EuDef;
use crate::types::EuType;

pub const TO_SET: EuDef = |env| {
    let a0 = env.pop()?.to_set()?;
    env.push(EuType::Set(a0));
    Ok(())
};

pub const WRAP_SET: EuDef = |env| {
    let a0 = env.pop()?;
    env.push(EuType::set([a0]));
    Ok(())
};

pub const ALL_SET: EuDef = |env| {
    let ts = EuType::Vec(mem::take(&mut env.stack)).to_set()?;
    env.push(EuType::Set(ts));
    Ok(())
};

pub const EVAL_SET: EuDef = |env| {
    let a0 = env.pop()?;
    env.push(a0.eval_to_set(env.scope.clone())?);
    Ok(())
};