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implement the special treatment of explicit type params in concepts

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This commit is contained in:
Zahary Karadjov 2016-08-12 16:45:28 +03:00
commit 644d645ea7
6 changed files with 20 additions and 5 deletions
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4
compiler/sigmatch.nim
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@ -638,6 +638,7 @@ proc matchUserTypeClass*(c: PContext, m: var TCandidate,
if modifier != tyNone:
dummyName = param[0]
dummyType = c.makeTypeWithModifier(modifier, a)
if modifier == tyTypeDesc: dummyType.flags.incl tfExplicit
else:
dummyName = param
dummyType = a
@ -833,7 +834,8 @@ proc typeRel(c: var TCandidate, f, aOrig: PType, doBind = true): TTypeRelation =
var
useTypeLoweringRuleInTypeClass = c.c.inTypeClass > 0 and
not c.isNoCall and
f.kind != tyTypeDesc
f.kind != tyTypeDesc and
tfExplicit notin aOrig.flags
aOrig = if useTypeLoweringRuleInTypeClass:
aOrig.skipTypes({tyTypeDesc, tyFieldAccessor})