From dfeffcfbf825c29d89ccec281ab95dd2383317ac Mon Sep 17 00:00:00 2001
From: Veikka Tuominen <git@vexu.eu>
Date: Mon, 28 Feb 2022 10:09:23 +0200
Subject: stage2: tuple mul/cat

---
 src/type.zig | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

(limited to 'src/type.zig')

diff --git a/src/type.zig b/src/type.zig
index a84a0f4520..fb3ab5d28f 100644
--- a/src/type.zig
+++ b/src/type.zig
@@ -4531,7 +4531,15 @@ pub const Type = extern union {
     };
 
     pub fn isTuple(ty: Type) bool {
-        return ty.tag() == .tuple;
+        return ty.tag() == .tuple or ty.tag() == .empty_struct_literal;
+    }
+
+    pub fn tupleFields(ty: Type) Payload.Tuple.Data {
+        return switch (ty.tag()) {
+            .tuple => ty.castTag(.tuple).?.data,
+            .empty_struct_literal => .{ .types = &.{}, .values = &.{} },
+            else => unreachable,
+        };
     }
 
     /// The sub-types are named after what fields they contain.
@@ -4683,11 +4691,13 @@ pub const Type = extern union {
 
         pub const Tuple = struct {
             base: Payload = .{ .tag = .tuple },
-            data: struct {
+            data: Data,
+
+            pub const Data = struct {
                 types: []Type,
                 /// unreachable_value elements are used to indicate runtime-known.
                 values: []Value,
-            },
+            };
         };
 
         pub const Union = struct {
-- 
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