Allow use of typedesc as type converters (#8409)

Fixes #8403
2018-07-24 08:25:08 +02:00 · 2018-07-24 08:25:08 +02:00 · d5c9255cab
commit d5c9255cab
parent 13df807576
1 changed files with 19 additions and 2 deletions
--- a/compiler/semtypes.nim
+++ b/compiler/semtypes.nim
@ -1577,8 +1577,14 @@ proc semTypeNode(c: PContext, n: PNode, prev: PType): PType =
        result = prev
  of nkSym:
    let s = getGenSym(c, n.sym)
-    if s.kind == skType and s.typ != nil:
-      var t = s.typ
+    if s.kind == skType and s.typ != nil or
+      s.kind == skParam and s.typ.kind == tyTypeDesc:
+      var t =
+        if s.kind == skType:
+          s.typ
+        else:
+          internalAssert c.config, s.typ.base.kind != tyNone and prev == nil
+          s.typ.base
      let alias = maybeAliasType(c, t, prev)
      if alias != nil:
        result = alias