Update query cli commands to handle Allegra and Mary eras #2136
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intricate
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Nov 29, 2020
Jimbo4350
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dcoutts
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First step of updating all the query commands to support the Allegra and Mary eras. In principle the queries could find out the era from the node itself, but this is a bit awkward so for now we require an extra cli flag.
Fail if this is not the case.
We pass the era in where needed. Generalise various helper functions over era type classes. For now the UTxO printing code relies on the value type being coin specifically, which means we do not yet support the Mary era. Add a couple functions for obtaining required era class constraints or type equality constraints based on the era: * obtainLedgerEraClassConstraints * requireValueTypeIsCoin The latter is used for the UTxO printing part to satisfy their constraints.
They all follow more or less the same pattern. Various helper functions become polymorphic with class and type equality constraints. We then need a couple more helper functions for obtaining the necessary constraints so they're available where we need them.
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