add VarDecl support for struct-method call syntax

implements #3306

2 files changed, 40 insertions, 0 deletions

diff --git a/test/stage1/behavior.zig b/test/stage1/behavior.zig
index 9b7f4305c2..569e6e2b51 100644
--- a/test/stage1/behavior.zig
+++ b/test/stage1/behavior.zig
@@ -58,6 +58,7 @@ comptime {
     _ = @import("behavior/floatop.zig");
     _ = @import("behavior/fn.zig");
     _ = @import("behavior/fn_in_struct_in_comptime.zig");
+    _ = @import("behavior/fn_delegation.zig");
     _ = @import("behavior/for.zig");
     _ = @import("behavior/generics.zig");
     _ = @import("behavior/hasdecl.zig");
diff --git a/test/stage1/behavior/fn_delegation.zig b/test/stage1/behavior/fn_delegation.zig
new file mode 100644
index 0000000000..57006805c8
--- /dev/null
+++ b/test/stage1/behavior/fn_delegation.zig
@@ -0,0 +1,39 @@
+const expect = @import("std").testing.expect;
+
+const Foo = struct {
+    a: u64 = 10,
+
+    fn one(self: Foo) u64 {
+        return self.a + 1;
+    }
+
+    const two = __two;
+
+    fn __two(self: Foo) u64 {
+        return self.a + 2;
+    }
+
+    const three = __three;
+
+    const four = custom(Foo, 4);
+};
+
+fn __three(self: Foo) u64 {
+    return self.a + 3;
+}
+
+fn custom(comptime T: type, comptime num: u64) fn (T) u64 {
+    return struct {
+        fn function(self: T) u64 {
+            return self.a + num;
+        }
+    }.function;
+}
+
+test "fn delegation" {
+    const foo = Foo{};
+    expect(foo.one() == 11);
+    expect(foo.two() == 12);
+    expect(foo.three() == 13);
+    expect(foo.four() == 14);
+}