import ast, idents, lineinfos, modulegraphs, magicsys

proc genEnumToStrProc*(t: PType; info: TLineInfo; g: ModuleGraph): PSym =
  result = newSym(skProc, getIdent(g.cache, "$"), t.owner, info)

  let dest = newSym(skParam, getIdent(g.cache, "e"), result, info)
  dest.typ = t

  let res = newSym(skResult, getIdent(g.cache, "result"), result, info)
  res.typ = getSysType(g, info, tyString)

  result.typ = newType(tyProc, t.owner)
  result.typ.n = newNodeI(nkFormalParams, info)
  rawAddSon(result.typ, res.typ)
  addSon(result.typ.n, newNodeI(nkEffectList, info))

  result.typ.addParam dest

  var body = newNodeI(nkStmtList, info)
  var caseStmt = newNodeI(nkCaseStmt, info)
  caseStmt.add(newSymNode dest)

  # copy the branches over, but replace the fields with the for loop body:
  for i in 0 ..< t.n.len:
    assert(t.n[i].kind == nkSym)
    var field = t.n[i].sym
    let val = if field.ast == nil: field.name.s else: field.ast.strVal
    caseStmt.add newTree(nkOfBranch, newSymNode(field),
      newTree(nkStmtList, newTree(nkFastAsgn, newSymNode(res), newStrNode(val, info))))
    #newIntTypeNode(nkIntLit, field.position, t)

  body.add(caseStmt)

  var n = newNodeI(nkProcDef, info, bodyPos+2)
  for i in 0 ..< n.len: n.sons[i] = newNodeI(nkEmpty, info)
  n.sons[namePos] = newSymNode(result)
  n.sons[paramsPos] = result.typ.n
  n.sons[bodyPos] = body
  n.sons[resultPos] = newSymNode(res)
  result.ast = n
  incl result.flags, sfFromGeneric