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Fix script data hash calculation #297

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Fix script data hash calculation #297

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29 changes: 13 additions & 16 deletions crates/tx3-cardano/src/compile/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -912,35 +912,32 @@ fn compile_witness_set(
Ok(witness_set)
}

fn infer_plutus_version(witness_set: &primitives::WitnessSet) -> PlutusVersion {
fn infer_plutus_version(witness_set: &primitives::WitnessSet) -> Option<PlutusVersion> {
// TODO: how do we handle this for reference scripts?

if witness_set.plutus_v1_script.is_some() {
0
Some(0)
} else if witness_set.plutus_v2_script.is_some() {
1
Some(1)
} else if witness_set.plutus_v3_script.is_some() {
2
Some(2)
} else {
// TODO: should we error here?
// Defaulting to Plutus V3 for now
2
None
}
}

fn compute_script_data_hash(
witness_set: &primitives::WitnessSet,
pparams: &PParams,
) -> Option<primitives::Hash<32>> {
let version = infer_plutus_version(witness_set);

let cost_model = pparams.cost_models.get(&version).unwrap();

let language_view = primitives::LanguageView(version, cost_model.clone());

let data = primitives::ScriptData::build_for(witness_set, &Some(language_view));

data.map(|x| x.hash())
let language_view = infer_plutus_version(witness_set).and_then(|version| {
pparams
.cost_models
.get(&version)
.map(|cost_model| primitives::LanguageView(version, cost_model.clone()))
});

primitives::ScriptData::build_for(witness_set, &language_view).map(|x| x.hash())
}

pub fn entry_point(tx: &tir::Tx, pparams: &PParams) -> Result<primitives::Tx<'static>, Error> {
Expand Down