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allow referencing other parameters in default parameter values

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fix #7756
fix #1201
fix #7000
fix #3002
fix #1046
This commit is contained in:
Zahary Karadjov 2018-06-16 03:51:31 +03:00
commit 31651ecd61
10 changed files with 244 additions and 31 deletions
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12
compiler/lowerings.nim
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@ -336,6 +336,18 @@ proc typeNeedsNoDeepCopy(t: PType): bool =
if t.kind in {tyVar, tyLent, tySequence}: t = t.lastSon
result = not containsGarbageCollectedRef(t)
proc hoistExpr*(varSection, expr: PNode, name: PIdent, owner: PSym): PSym =
result = newSym(skLet, name, owner, varSection.info, owner.options)
result.flags.incl sfHoisted
result.typ = expr.typ
var varDef = newNodeI(nkIdentDefs, varSection.info, 3)
varDef.sons[0] = newSymNode(result)
varDef.sons[1] = newNodeI(nkEmpty, varSection.info)
varDef.sons[2] = expr
varSection.add varDef
proc addLocalVar(g: ModuleGraph; varSection, varInit: PNode; owner: PSym; typ: PType;
v: PNode; useShallowCopy=false): PSym =
result = newSym(skTemp, getIdent(g.cache, genPrefix), owner, varSection.info,