From c629fac4297b8f13bdab00100f3b05549174154e Mon Sep 17 00:00:00 2001
From: Joel Kronqvist <joel.kronqvist@iki.fi>
Date: Tue, 5 Aug 2025 11:40:00 +0300
Subject: Added boilerplate and tests for booleans, integer comparisons and
 boolean operators.

---
 src/type/mod.rs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

(limited to 'src/type/mod.rs')

diff --git a/src/type/mod.rs b/src/type/mod.rs
index 8761cee..8977d85 100644
--- a/src/type/mod.rs
+++ b/src/type/mod.rs
@@ -14,6 +14,8 @@ pub enum Type {
 
     Integer,
 
+    Boolean,
+
     Arrow(Box<Type>, Box<Type>),
 
     List(Vec<Type>),
@@ -63,19 +65,21 @@ impl Type {
     /// use myslip::r#type::{*, Type::*, TypeError::*, util::*};
     ///
     /// assert_eq!(Integer.is_concrete(), Ok(()));
+    /// assert_eq!(Boolean.is_concrete(), Ok(()));
     /// assert_eq!(
     ///     VarType("a".to_string()).is_concrete(),
     ///     Err("a".to_string())
     /// );
     ///
     /// assert_eq!(arr(Integer, Integer).is_concrete(), Ok(()));
+    /// assert_eq!(arr(Integer, Boolean).is_concrete(), Ok(()));
     /// assert_eq!(
     ///     arr(VarType("b".to_string()), Integer).is_concrete(),
     ///     Err("b".to_string())
     /// );
     ///
     /// assert_eq!(
-    ///     List(vec![Integer, Integer, arr(Integer, Integer)]).is_concrete(),
+    ///     List(vec![Integer, Boolean, arr(Integer, Integer)]).is_concrete(),
     ///     Ok(())
     /// );
     /// assert_eq!(
@@ -87,6 +91,7 @@ impl Type {
     pub fn is_concrete(&self) -> Result<(), String> {
         match self {
             Integer => Ok(()),
+            Boolean => todo!(),
             Arrow(a, b) => b.is_concrete().and_then(|_ok| a.is_concrete()),
             List(v) => {
                 let mut res = Ok(());
-- 
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