Add conditional target placeholder expr

schala-lang/language/src/eval.rs

@@ -194,7 +194,8 @@ impl<'a> State<'a> {
         Assign { box val, box expr } => self.assign_expression(val, expr),
         Unit => Ok(Node::Expr(Unit)),
         CaseMatch { box cond, alternatives } => self.case_match_expression(cond, alternatives),
-        UnimplementedSigilValue => Err(format!("Sigil value eval not implemented"))
+        ConditionalTargetPlaceholder => Err(format!("This value shouldn't exist here")),
+        UnimplementedSigilValue => Err(format!("Sigil value eval not implemented")),
       }
     }
   }

schala-lang/language/src/reduced_ast.rs

@@ -48,6 +48,7 @@ pub enum Expr {
     then_clause: Vec<Stmt>,
     else_clause: Vec<Stmt>,
   },
+  ConditionalTargetPlaceholder,
   CaseMatch {
     cond: Box<Expr>,
     alternatives: Vec<Alternative>