Converters to take into account constraints. Fixes #7520 (#8593)

2018-08-13 15:02:20 +02:00 · 2018-08-13 15:02:20 +02:00 · aa1cdebdc2
commit aa1cdebdc2
parent ee29370f60
2 changed files with 24 additions and 0 deletions
--- a/compiler/sigmatch.nim
+++ b/compiler/sigmatch.nim
@ -1809,6 +1809,10 @@ proc userConvMatch(c: PContext, m: var TCandidate, f, a: PType,
    # see tests/tgenericconverter:
    let srca = typeRel(m, src, a)
    if srca notin {isEqual, isGeneric, isSubtype}: continue
+   
+    let constraint = c.converters[i].typ.n[1].sym.constraint
+    if not constraint.isNil and not matchNodeKinds(constraint, arg):
+      continue

    let destIsGeneric = containsGenericType(dest)
    if destIsGeneric: