Safe Haskell | None |
---|---|
Language | Haskell98 |
Shelley.Spec.Ledger.STS.Ledgers
Synopsis
- data LEDGERS era
- data LedgersEnv era = LedgersEnv {
- ledgersSlotNo :: SlotNo
- ledgersPp :: PParams era
- ledgersAccount :: AccountState
- data LedgersPredicateFailure era = LedgerFailure (PredicateFailure (LEDGER era))
- type family PredicateFailure a = (b :: Type) | b -> a
Documentation
Instances
data LedgersEnv era Source #
Constructors
LedgersEnv | |
Fields
|
data LedgersPredicateFailure era Source #
Constructors
LedgerFailure (PredicateFailure (LEDGER era)) |
Instances
type family PredicateFailure a = (b :: Type) | b -> a Source #
Descriptive type for the possible failures which might cause a transition to fail.
As a convention, PredicateFailure
s which are "structural" (meaning that
they are not "throwable" in practice, and are used to pass control from
one transition rule to another) are prefixed with S_
.
Structural PredicateFailure
s represent conditions between rules where
the disjunction of all rules' preconditions is equal to True
. That is,
either one rule will throw a structural PredicateFailure
and the other
will succeed, or vice-versa.