Starting to implement Ignored pattern

schala-lang/language/src/reduced_ast.rs

@@ -63,6 +63,12 @@ pub struct Alternative {
   pub item: Vec<Stmt>,
 }
 
+impl Alternative {
+  fn default(item: Vec<Stmt>) -> Alternative {
+    Alternative { tag: None, guard: None, bound_vars: vec![], item }
+  }
+}
+
 #[derive(Debug, Clone)]
 pub enum Lit {
   Nat(u64),
@@ -156,12 +162,7 @@ fn reduce_if_expression(discriminator: &Discriminator, body: &IfExpressionBody,
 
       let alternatives = vec![
         pat.to_alternative(&cond, then_clause, symbol_table),
-        Alternative {
-          tag: None,
-          guard: None,
-          bound_vars: vec![],
-          item: else_clause,
-        },
+        Alternative::default(else_clause),
       ];
 
       Expr::CaseMatch {
@@ -217,7 +218,7 @@ impl Pattern {
       Record(_name, _pairs) => {
         unimplemented!()
       },
-      Ignored => unimplemented!(),
+      Ignored => Alternative::default(item),
       Literal(lit) => match lit {
         PatternLiteral::NumPattern { neg, num } => {
           let comparison = Expr::Lit(match (neg, num) {