Contract con_token_swap

  

    

      

        

            
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import currency
          

            
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__operator = Variable(contract='con_token_swap', name='operator')
          

            
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__seen_hashes = Hash(contract='con_token_swap', name='seen_hashes')
          

            
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def ____(vk: str):
          

            
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    __operator.set(vk)
          

            
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@__export('con_token_swap')
          

            
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def disperse(amount: float, to: str, hash: str):
          

            
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    __assert_owner()
          

            
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    assert __seen_hashes[hash] is None, 'Already processed this hash!'
          

            
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    __seen_hashes[hash] = True
          

            
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    currency.transfer(amount=amount, to=to)
          

            
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@__export('con_token_swap')
          

            
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def withdraw(amount: float):
          

            
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    __assert_owner()
          

            
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    currency.transfer(amount=amount, to=ctx.caller)
          

            
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@__export('con_token_swap')
          

            
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def change_operator(new_operator: str):
          

            
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    __assert_owner()
          

            
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    __operator.set(new_operator)
          

            
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def __assert_owner():
          

            
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    assert ctx.caller == __operator.get(), 'Only operator can call!'
          

            
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