CBOR Generators #6
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This makes it much easier to use for testing.
Though at the moment we don't use them, this should make it easier to support in future.
This commit does a number of things related to "compiling" the parsed CDDL into something easier to work with for the purposes of CBOR generation and validation: - Introduce the 'CTree' abstration in src/Codec/CBOR/Cuddle/CDDL/CTree.hs. This is a flattened, simplified structure which we use to represent CDDL in an easier-to-manipulate fashion. - Introduce in src/Codec/CBOR/Cuddle/CDDL/Resolve.hs various compilation passes which implement: - Merging assignments - Building a CTree - Resolving the Postlude - Monomorphisation In addition, we make a few unrelated changes: - Move the 'Postlude' module to sit in CDDL/Postlude. - Format the cabal file with cabal-fmt.
This commit adds support for generating CBOR terms corresponding to a given CDDL file. Needs better support for errors, and not all CDDL features are yet supported.
nc6
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Feb 14, 2024
We allow Haskell functions to be used as generic
rules by implementing the `binding` function.
Currently this is only implemented for one or two
generic parameters, but conceptually supports any
number.
Examples are provided both in the Conway.hs file
and in the tests. The generated CDDL for Conway
now looks like:
```
transaction_body = {0 : set<transaction_index>
, 1 : [* transaction_output]
, 2 : coin
, ? 3 : uint
, ? 4 : certificates
, ? 5 : withdrawals
, ? 7 : auxiliary_data_hash
, ? 8 : uint
, ? 9 : mint
, ? 11 : script_data_hash
, ? 13 : nonempty_set<transaction_input>
, ? 14 : required_signers
, ? 15 : network_id
, ? 16 : transaction_output
, ? 17 : coin
, ? 18 : nonempty_set<transaction_input>
, ? 19 : voting_procedures
, ? 20 : proposal_procedures
, ? 21 : coin
, ? 22 : positive_coin}
```
...
```
constr<a0> = #6.1([* a0])
/ #6.2([* a0])
/ #6.3([* a0])
/ #6.4([* a0])
/ #6.5([* a0])
/ #6.6([* a0])
/ #6.7([* a0])
/ #6.2([uint, [* a0]])
nonempty_set<a0> = set<a0>
set<a0> = [* a0]
```
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Adds CDDL resolution and CBOR generation