with macro

with.nim

import macros

macro with*(obj: typed, statements: untyped): untyped =
  #let statements =
  #  if body.kind == nnkDo: body[6]
  #  else: body
  statements.expectKind(nnkStmtList)

  result = newStmtList()
  for statement in statements:
    case statement.kind:
    of nnkAsgn:
      result.add(
        newAssignment(
          newDotExpr(obj, statement[0]),
          statement[1]
        )
      )
    of nnkCall:
      result.add(
        newCall(
          newDotExpr(obj, statement[0])
        )
      )
    else: discard