From 270964c487e5347c61dade25bec903580483dda5 Mon Sep 17 00:00:00 2001
From: Timothee Cour <timothee.cour2@gmail.com>
Date: Fri, 2 Apr 2021 22:15:21 -0700
Subject: implement RFCs/294 ; disallow enum <=> enum conversion (#16351)

* fix https://github.com/nim-lang/RFCs/issues/294 ; disallow enum <=> enum conversion
* fix the runnableExamples that was the instigator of this RFC
* legacy -d:nimLegacyConvEnumEnum
* use -d:nimLegacyConvEnumEnum in important_package nimgame2
* add test for enum cast
* improve changelog
* add changelog: Changes affecting backward compatibility
* cleanup changelog
* fix changelog
---
 tests/misc/tconv.nim | 33 ++++++++++++++++++++++++++++++++-
 1 file changed, 32 insertions(+), 1 deletion(-)

(limited to 'tests/misc/tconv.nim')

diff --git a/tests/misc/tconv.nim b/tests/misc/tconv.nim
index f7d15b0b5..c93fc57f8 100644
--- a/tests/misc/tconv.nim
+++ b/tests/misc/tconv.nim
@@ -1,5 +1,13 @@
+discard """
+  nimout:'''
+tconv.nim(81, 15) Warning: enum to enum conversion is now deprecated [User]
+'''
+"""
+
 template reject(x) =
-    static: assert(not compiles(x))
+  static: doAssert(not compiles(x))
+template accept(x) =
+  static: doAssert(compiles(x))
 
 reject:
     const x = int8(300)
@@ -55,3 +63,26 @@ block: # issue 3766
     proc r(x: static[R]) =
       echo x
     r 3.R
+
+
+block: # https://github.com/nim-lang/RFCs/issues/294
+  type Koo = enum k1, k2
+  type Goo = enum g1, g2
+
+  accept: Koo(k2)
+  accept: k2.Koo
+  accept: k2.int.Goo
+
+  reject: Goo(k2)
+  reject: k2.Goo
+  reject: k2.string
+
+  {.define(nimLegacyConvEnumEnum).}
+  discard Goo(k2)
+  accept: Goo(k2)
+  accept: k2.Goo
+  reject: k2.string
+  {.undef(nimLegacyConvEnumEnum).}
+
+  reject: Goo(k2)
+  reject: k2.Goo
-- 
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