Remove unused TypedHole variant from roc_can::expr::Expr

crates/compiler/can/src/copy.rs

@@ -718,8 +718,6 @@ fn deep_copy_expr_help<C: CopyEnv>(env: &mut C, copied: &mut Vec<Variable>, expr
             symbol: *symbol,
         },
 
-        TypedHole(v) => TypedHole(sub!(*v)),
-
         RuntimeError(err) => RuntimeError(err.clone()),
     }
 }

crates/compiler/can/src/debug/pretty_print.rs

@@ -453,7 +453,6 @@ fn expr<'a>(c: &Ctx, p: EPrec, f: &'a Arena<'a>, e: &'a Expr) -> DocBuilder<'a,
         Dbg { .. } => todo!(),
         Expect { .. } => todo!(),
         Return { .. } => todo!(),
-        TypedHole(_) => todo!(),
         RuntimeError(_) => todo!(),
     }
 }

crates/compiler/can/src/expr.rs

@@ -333,9 +333,6 @@ pub enum Expr {
         return_var: Variable,
     },
 
-    /// Rendered as empty box in editor
-    TypedHole(Variable),
-
     /// Compiles, but will crash if reached
     RuntimeError(RuntimeError),
 }
@@ -411,7 +408,7 @@ impl Expr {
             Self::Dbg { .. } => Category::Expect,
 
             // these nodes place no constraints on the expression's type
-            Self::TypedHole(_) | Self::RuntimeError(..) => Category::Unknown,
+            Self::RuntimeError(..) => Category::Unknown,
         }
     }
 }
@@ -2095,7 +2092,6 @@ pub fn inline_calls(var_store: &mut VarStore, expr: Expr) -> Expr {
         | other @ ParamsVar { .. }
         | other @ AbilityMember(..)
         | other @ RunLowLevel { .. }
-        | other @ TypedHole { .. }
         | other @ ForeignCall { .. }
         | other @ OpaqueWrapFunction(_)
         | other @ Crash { .. }
@@ -3460,7 +3456,6 @@ pub(crate) fn get_lookup_symbols(expr: &Expr) -> Vec<ExpectLookup> {
             | Expr::RecordAccessor(_)
             | Expr::SingleQuote(..)
             | Expr::EmptyRecord
-            | Expr::TypedHole(_)
             | Expr::RuntimeError(_)
             | Expr::ImportParams(_, _, None)
             | Expr::OpaqueWrapFunction(_) => {}

crates/compiler/can/src/module.rs

@@ -1055,7 +1055,6 @@ fn fix_values_captured_in_closure_expr(
         | ParamsVar { .. }
         | AbilityMember(..)
         | EmptyRecord
-        | TypedHole { .. }
         | RuntimeError(_)
         | ZeroArgumentTag { .. }
         | RecordAccessor { .. } => {}

crates/compiler/can/src/traverse.rs

@@ -406,7 +406,6 @@ pub fn walk_expr<V: Visitor>(visitor: &mut V, expr: &Expr, var: Variable) {
         } => {
             visitor.visit_expr(&return_value.value, return_value.region, *return_var);
         }
-        Expr::TypedHole(_) => { /* terminal */ }
         Expr::RuntimeError(..) => { /* terminal */ }
     }
 }