From ce606e1994876486899d067a68b3c06d60137d6a Mon Sep 17 00:00:00 2001
From: fennecdjay <astor.jeremie@wanadoo.fr>
Date: Thu, 26 Sep 2019 12:02:21 +0200
Subject: [PATCH] :art: Use meta to check unpack

---
 src/emit/emit.c | 5 +++--
 src/lib/tuple.c | 2 +-
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/emit/emit.c b/src/emit/emit.c
index 08c096b8..c6c618cc 100644
--- a/src/emit/emit.c
+++ b/src/emit/emit.c
@@ -575,8 +575,9 @@ ANN static m_bool prim_gack(const Emitter emit, const Exp_Primary* primary) {
 }
 
 ANN static m_bool prim_unpack(const Emitter emit NUSED, const Exp_Primary* primary) {
-// TODO err_msg
-  return exp_self(primary)->emit_var ? GW_OK : GW_ERROR;
+  if(exp_self(primary)->meta == ae_meta_var)
+    return GW_OK;
+  ERR_B(exp_self(primary)->pos, _("unused Tuple unpack"))
 }
 
 static const _exp_func prim_func[] = {
diff --git a/src/lib/tuple.c b/src/lib/tuple.c
index a1f9474a..b12b5cf0 100644
--- a/src/lib/tuple.c
+++ b/src/lib/tuple.c
@@ -144,10 +144,10 @@ static OP_CHECK(opck_at_tuple) {
         DECL_OO(const Type, t, = (Type)VPTR(&bin->lhs->type->e->tuple->types, i))
         e->d.exp_decl.td->xid->xid = insert_symbol(t->name);
         CHECK_BO(traverse_decl(env, &e->d.exp_decl))
+        bin->rhs->meta = ae_meta_var;
       }
       ++i;
     } while((e = e->next));
-    bin->rhs->emit_var = 1;
     return bin->lhs->type;
   }
   return opck_at_object_tuple(env, data, mut);
-- 
2.43.0