Remove some dead code

src/check_builtin.cpp

@@ -48,7 +48,7 @@ BuiltinTypeIsProc *builtin_type_is_procs[BuiltinProc__type_simple_boolean_end -
 };
 
 
-void check_try_split_types(CheckerContext *c, Operand *x, String const &name, Type **left_type_, Type **right_type_) {
+void check_or_else_split_types(CheckerContext *c, Operand *x, String const &name, Type **left_type_, Type **right_type_) {
 	Type *left_type = nullptr;
 	Type *right_type = nullptr;
 	if (x->type->kind == Type_Tuple) {
@@ -75,11 +75,6 @@ void check_try_split_types(CheckerContext *c, Operand *x, String const &name, Ty
 		error(x->expr, "'%.*s' expects an \"optional ok\" like value, got %s", LIT(name), str);
 		gb_string_free(str);
 	}
-	// if (!type_has_nil(right_type) && !is_type_boolean(right_type)) {
-	// 	gbString str = type_to_string(right_type);
-	// 	error(x->expr, "'%.*s' expects an \"optional ok\" like value, or an n-valued expression where the last value is either a boolean or can be compared against 'nil', got %s", LIT(name), str);
-	// 	gb_string_free(str);
-	// }
 }
 
 
@@ -1829,7 +1824,7 @@ bool check_builtin_procedure(CheckerContext *c, Operand *operand, Ast *call, i32
 
 		Type *left_type = nullptr;
 		Type *right_type = nullptr;
-		check_try_split_types(c, &x, builtin_name, &left_type, &right_type);
+		check_or_else_split_types(c, &x, builtin_name, &left_type, &right_type);
 		add_type_and_value(&c->checker->info, arg, x.mode, x.type, x.value);
 
 		if (left_type != nullptr) {

src/check_expr.cpp

@@ -662,23 +662,10 @@ i64 check_distance_between_types(CheckerContext *c, Operand *operand, Type *type
 		if (expr->kind == Ast_AutoCast) {
 			Operand x = *operand;
 			x.expr = expr->AutoCast.expr;
-			bool ok = check_cast_internal(c, &x, type);
-			if (ok) {
+			if (check_cast_internal(c, &x, type)) {
 				return MAXIMUM_TYPE_DISTANCE;
 			}
-		} /*else if (expr->kind == Ast_CallExpr) {
-			// NOTE(bill, 2021-04-19): Allow assignment of procedure calls with #optional_ok
-			ast_node(ce, CallExpr, expr);
-			Type *pt = base_type(type_of_expr(ce->proc));
-			if (pt->kind == Type_Proc && pt->Proc.optional_ok) {
-				Operand x = *operand;
-				x.type = pt->Proc.results->Tuple.variables[0]->type;
-				i64 res = check_distance_between_types(c, &x, type);
-				if (res >= 0) {
-					return res+1;
-				}
-			}
-		}*/
+		}
 	}
 
 	return -1;

src/parser.hpp

@@ -277,10 +277,11 @@ enum FieldFlag : u32 {
 	FieldFlag_const     = 1<<5,
 	FieldFlag_any_int   = 1<<6,
 
-	FieldFlag_Tags = 1<<10,
-
+	// Internal use by the parser only
+	FieldFlag_Tags      = 1<<10,
 	FieldFlag_Results   = 1<<16,
 
+	// Parameter List Restrictions
 	FieldFlag_Signature = FieldFlag_ellipsis|FieldFlag_using|FieldFlag_no_alias|FieldFlag_c_vararg|FieldFlag_auto_cast|FieldFlag_const|FieldFlag_any_int,
 	FieldFlag_Struct    = FieldFlag_using|FieldFlag_Tags,
 };