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proof(SafeCapability): DISCHARGE 5 anchor OWEDs via Refl (file fully clear) (proven#90) #104

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Merged
hyperpolymath merged 1 commit into from
May 30, 2026
Merged

proof(SafeCapability): DISCHARGE 5 anchor OWEDs via Refl (file fully clear) (proven#90) #104

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39 changes: 24 additions & 15 deletions src/Proven/SafeCapability/Proofs.idr
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Original file line number Diff line number Diff line change
Expand Up @@ -140,43 +140,52 @@ neverExpires now h r ps d = Refl
-- Record-update functions
--------------------------------------------------------------------------------

||| OWED: `makeNonDelegatable` sets `capDelegatable = False`. Same
||| `public export`-body-opacity blocker.
||| DISCHARGED: `makeNonDelegatable` sets `capDelegatable = False`.
||| `makeNonDelegatable` is `public export` with body
||| `{ capDelegatable := False } cap` (SafeCapability.idr L171-172).
||| Record-update projection reduces directly for `Refl`.
public export
0 makeNonDelegatableSetsFalse :
makeNonDelegatableSetsFalse :
(cap : Capability) -> (makeNonDelegatable cap).capDelegatable = False
makeNonDelegatableSetsFalse _ = Refl

||| OWED: `setExpiry t` sets `capExpiry = Just t`. Same blocker.
||| DISCHARGED: `setExpiry t` sets `capExpiry = Just t`. `setExpiry`
||| is `public export` (SafeCapability.idr L176-177) — same record-
||| update projection pattern.
public export
0 setExpirySetsJust :
setExpirySetsJust :
(t : Nat) -> (cap : Capability) -> (setExpiry t cap).capExpiry = Just t
setExpirySetsJust _ _ = Refl

--------------------------------------------------------------------------------
-- Store base cases
--------------------------------------------------------------------------------

||| OWED: `emptyStore` has no capabilities. Idris2 0.8.0 does not
||| reduce record-projection through a `public export` definition
||| body alone (would need `inline` or full-pattern unfolding).
||| DISCHARGED: `emptyStore` has no capabilities. `emptyStore` is
||| `public export` with body `MkCapabilityStore [] []`
||| (SafeCapability.idr L188-189), so record projection reduces.
public export
0 emptyStoreNoCapabilities :
emptyStoreNoCapabilities :
(emptyStore).capabilities = []
emptyStoreNoCapabilities = Refl

||| OWED: `emptyStore` has no revoked entries. Same blocker.
||| DISCHARGED: `emptyStore` has no revoked entries. Same anchor.
public export
0 emptyStoreNoRevoked :
emptyStoreNoRevoked :
(emptyStore).revoked = []
emptyStoreNoRevoked = Refl

--------------------------------------------------------------------------------
-- `adminHierarchy`
--------------------------------------------------------------------------------

||| OWED: `adminHierarchy` declares Admin as the parent of [Read,
||| Write, Execute, Delete]. Same `public export`-body-opacity
||| blocker as `emptyStore`.
||| DISCHARGED: `adminHierarchy` declares Admin as parent of [Read,
||| Write, Execute, Delete]. `adminHierarchy` is `public export` with
||| this exact body (SafeCapability.idr L258-259) — `Refl` closes.
public export
0 adminHierarchyDef :
adminHierarchyDef :
adminHierarchy = MkHierarchy Admin [Read, Write, Execute, Delete]
adminHierarchyDef = Refl

--------------------------------------------------------------------------------
-- `readOnlyMembrane`
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