Adds a view method for getting current chi.
#98
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Open to whatever changes to function/variable naming you all want. |
This change makes it so a contract with a `view` function can know what `chi` would be in this block. This is useful for contracts that have view functions that need to return values denominated in DAI when looking at DSR balances. An example use case for this is a token contract (DAI-GoUp) that wraps DAI held in DSR. The `balanceOf` function of such a contract (which is `view`) needs to be able to calculate the current balance of an account denominated in DAI. In order to do this, it must calculate what `chi` _would_ be if `drip` was called this block, but without actually calling `drip` (because that is not a view function).
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We could change this method to |
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This change makes it so a contract with a
viewfunction can know whatchiwould be in this block. This is useful for contracts that have view functions that need to return values denominated in DAI when looking at DSR balances.An example use case for this is a token contract (DAI-GoUp) that wraps DAI held in DSR. The
balanceOffunction of such a contract (which isview) needs to be able to calculate the current balance of an account denominated in DAI. In order to do this, it must calculate whatchiwould be ifdripwas called this block, but without actually callingdrip(because that is not a view function).