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Interface implementation enforcing units? #1303

robrobbins opened this issue Feb 27, 2019 · 1 comment

Interface implementation enforcing units? #1303

robrobbins opened this issue Feb 27, 2019 · 1 comment


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@robrobbins robrobbins commented Feb 27, 2019

Version Information

  • vyper Version (output of vyper --version): 0.1.0b8
  • OS: linux
  • Python Version (output of python --version): 3.6
  • Environment (output of pip freeze):

What's your issue about?

Compiler erroneously enforcing units on interface method returns

  • full output of the error you received:
    vyper.exceptions.StructureException: Contract does not comply to supplied Interface(s).
    Missing interface functions:
    ... ( any method that does not match the return unit. Returning wei_value vs uint256 for example )

  • what command you ran: vyper

  • the code that caused the failure (see this link for help with formatting code)

    def balanceOf(owner: address) -> wei_value:
    return self.balances[owner]

How can it be fixed?

Wave a magic wand whilst yelling Non Expecto Metrum!

@jacqueswww jacqueswww added the bug label Feb 28, 2019

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@jacqueswww jacqueswww commented Feb 28, 2019

Thanks @robrobbins ! I think we should just fix it - ABI can't specify units - so unit checking at this level should be ignored.

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