Fix fallthrough warnings

src/Binder/Binder.cpp

@@ -56,6 +56,7 @@ namespace Porygon::Binder {
             case ParsedStatementKind::Bad:
                 return new BoundBadStatement();
         }
+        throw "unreachable";
     }
 
     BoundStatement *Binder::BindBlockStatement(const ParsedStatement *statement) {
@@ -355,6 +356,7 @@ namespace Porygon::Binder {
             case ParsedExpressionKind::Bad:
                 return new BoundBadExpression(expression->GetStartPosition(), expression->GetLength());
         }
+        throw;
     }
 
     BoundExpression *Binder::BindVariableExpression(const VariableExpression *expression) {

src/Evaluator/Evaluator.cpp

@@ -266,11 +266,7 @@ namespace Porygon::Evaluation {
             case BoundExpressionKind::PeriodIndex:
                 return dynamic_pointer_cast<NumericEvalValue>(this->EvaluatePeriodIndexExpression(expression));
 
-            case BoundExpressionKind::LiteralString:
+            default:
-            case BoundExpressionKind::LiteralBool:
-            case BoundExpressionKind::Bad:
-            case BoundExpressionKind::NumericalTable:
-            case BoundExpressionKind::Table:
                 throw;
         }
     }
@@ -293,12 +289,7 @@ namespace Porygon::Evaluation {
             case BoundExpressionKind::PeriodIndex:
                 return dynamic_pointer_cast<BooleanEvalValue>(this->EvaluatePeriodIndexExpression(expression));
 
-            case BoundExpressionKind::Bad:
+            default:
-            case BoundExpressionKind::LiteralInteger:
-            case BoundExpressionKind::LiteralFloat:
-            case BoundExpressionKind::LiteralString:
-            case BoundExpressionKind::NumericalTable:
-            case BoundExpressionKind::Table:
                 throw;
 
         }
@@ -319,13 +310,7 @@ namespace Porygon::Evaluation {
             case BoundExpressionKind::PeriodIndex:
                 return dynamic_pointer_cast<StringEvalValue>(this->EvaluatePeriodIndexExpression(expression));
 
-            case BoundExpressionKind::Bad:
+            default:
-            case BoundExpressionKind::LiteralInteger:
-            case BoundExpressionKind::LiteralFloat:
-            case BoundExpressionKind::LiteralBool:
-            case BoundExpressionKind::Unary:
-            case BoundExpressionKind::NumericalTable:
-            case BoundExpressionKind::Table:
                 throw;
 
         }

src/Evaluator/UnaryEvaluation.cpp

@@ -17,7 +17,7 @@ namespace Porygon::Evaluation {
                     return make_shared<IntegerEvalValue>(-l);
                 }
             }
-            case BoundUnaryOperation::LogicalNegation:
+            default:
                 throw;
         }
     }
@@ -29,7 +29,7 @@ namespace Porygon::Evaluation {
                 bool b = val->EvaluateBool();
                 return make_shared<BooleanEvalValue>(!b);
             }
-            case BoundUnaryOperation::Negation:
+            default:
                 throw;
         }
     }