fix: Remove the error prone SemihashMap
This commit is contained in:
parent
7076669c3d
commit
764be6d14b
|
@ -1,8 +1,8 @@
|
|||
import Pantograph.Goal
|
||||
import Pantograph.Protocol
|
||||
import Pantograph.SemihashMap
|
||||
import Pantograph.Serial
|
||||
import Pantograph.Symbol
|
||||
import Lean.Data.HashMap
|
||||
|
||||
namespace Pantograph
|
||||
|
||||
|
@ -12,7 +12,8 @@ structure Context where
|
|||
/-- Stores state of the REPL -/
|
||||
structure State where
|
||||
options: Protocol.Options := {}
|
||||
goalStates: SemihashMap GoalState := SemihashMap.empty
|
||||
nextId: Nat := 0
|
||||
goalStates: Lean.HashMap Nat GoalState := Lean.HashMap.empty
|
||||
|
||||
/-- Main state monad for executing commands -/
|
||||
abbrev MainM := ReaderT Context (StateT State Lean.Elab.TermElabM)
|
||||
|
@ -53,7 +54,7 @@ def execute (command: Protocol.Command): MainM Lean.Json := do
|
|||
reset (_: Protocol.Reset): MainM (CR Protocol.StatResult) := do
|
||||
let state ← get
|
||||
let nGoals := state.goalStates.size
|
||||
set { state with goalStates := SemihashMap.empty }
|
||||
set { state with goalStates := Lean.HashMap.empty }
|
||||
return .ok { nGoals }
|
||||
stat (_: Protocol.Stat): MainM (CR Protocol.StatResult) := do
|
||||
let state ← get
|
||||
|
@ -141,12 +142,15 @@ def execute (command: Protocol.Command): MainM Lean.Json := do
|
|||
| .error error => return .error error
|
||||
| .ok expr =>
|
||||
let goalState ← GoalState.create expr
|
||||
let (goalStates, stateId) := state.goalStates.insert goalState
|
||||
set { state with goalStates }
|
||||
let stateId := state.nextId
|
||||
set { state with
|
||||
goalStates := state.goalStates.insert stateId goalState,
|
||||
nextId := state.nextId + 1
|
||||
}
|
||||
return .ok { stateId, root := goalState.root.name.toString }
|
||||
goal_tactic (args: Protocol.GoalTactic): MainM (CR Protocol.GoalTacticResult) := do
|
||||
let state ← get
|
||||
match state.goalStates.get? args.stateId with
|
||||
match state.goalStates.find? args.stateId with
|
||||
| .none => return .error $ errorIndex s!"Invalid state index {args.stateId}"
|
||||
| .some goalState => do
|
||||
let nextGoalState?: Except _ GoalState ← match args.tactic?, args.expr? with
|
||||
|
@ -158,8 +162,9 @@ def execute (command: Protocol.Command): MainM Lean.Json := do
|
|||
match nextGoalState? with
|
||||
| .error error => return .error error
|
||||
| .ok (.success nextGoalState) =>
|
||||
let (goalStates, nextStateId) := state.goalStates.insert nextGoalState
|
||||
set { state with goalStates }
|
||||
let nextStateId := state.nextId
|
||||
let goalStates := state.goalStates.insert state.nextId goalState
|
||||
set { state with goalStates, nextId := state.nextId + 1 }
|
||||
let goals ← nextGoalState.serializeGoals (parent := .some goalState) (options := state.options)
|
||||
return .ok {
|
||||
nextStateId? := .some nextStateId,
|
||||
|
@ -173,12 +178,12 @@ def execute (command: Protocol.Command): MainM Lean.Json := do
|
|||
return .ok { tacticErrors? := .some messages }
|
||||
goal_continue (args: Protocol.GoalContinue): MainM (CR Protocol.GoalContinueResult) := do
|
||||
let state ← get
|
||||
match state.goalStates.get? args.target with
|
||||
match state.goalStates.find? args.target with
|
||||
| .none => return .error $ errorIndex s!"Invalid state index {args.target}"
|
||||
| .some target => do
|
||||
let nextState? ← match args.branch?, args.goals? with
|
||||
| .some branchId, .none => do
|
||||
match state.goalStates.get? branchId with
|
||||
match state.goalStates.find? branchId with
|
||||
| .none => return .error $ errorIndex s!"Invalid state index {branchId}"
|
||||
| .some branch => pure $ target.continue branch
|
||||
| .none, .some goals =>
|
||||
|
@ -188,8 +193,11 @@ def execute (command: Protocol.Command): MainM Lean.Json := do
|
|||
match nextState? with
|
||||
| .error error => return .ok { error? := .some error }
|
||||
| .ok nextGoalState =>
|
||||
let (goalStates, nextStateId) := state.goalStates.insert nextGoalState
|
||||
set { state with goalStates }
|
||||
let nextStateId := state.nextId
|
||||
set { state with
|
||||
goalStates := state.goalStates.insert nextStateId nextGoalState,
|
||||
nextId := state.nextId + 1
|
||||
}
|
||||
let goals ← nextGoalState.serializeGoals (parent := .some target) (options := state.options)
|
||||
return .ok {
|
||||
nextStateId? := .some nextStateId,
|
||||
|
@ -197,12 +205,12 @@ def execute (command: Protocol.Command): MainM Lean.Json := do
|
|||
}
|
||||
goal_delete (args: Protocol.GoalDelete): MainM (CR Protocol.GoalDeleteResult) := do
|
||||
let state ← get
|
||||
let goalStates := args.stateIds.foldl (λ map id => map.remove id) state.goalStates
|
||||
let goalStates := args.stateIds.foldl (λ map id => map.erase id) state.goalStates
|
||||
set { state with goalStates }
|
||||
return .ok {}
|
||||
goal_print (args: Protocol.GoalPrint): MainM (CR Protocol.GoalPrintResult) := do
|
||||
let state ← get
|
||||
match state.goalStates.get? args.stateId with
|
||||
match state.goalStates.find? args.stateId with
|
||||
| .none => return .error $ errorIndex s!"Invalid state index {args.stateId}"
|
||||
| .some goalState => do
|
||||
let root? ← goalState.rootExpr?.mapM (λ expr => serialize_expression state.options expr)
|
||||
|
|
|
@ -1,149 +0,0 @@
|
|||
|
||||
namespace Pantograph.SemihashMap
|
||||
|
||||
structure Imp (β: Type u) where
|
||||
data: Array (Option β)
|
||||
|
||||
-- Number of elements currently in use
|
||||
size: Nat
|
||||
|
||||
-- Next index that has never been touched
|
||||
allocFront: Nat
|
||||
|
||||
-- Deallocated indices
|
||||
deallocs: Array Nat
|
||||
|
||||
-- Number of valid entries in `deallocs` array
|
||||
lastDealloc: Nat
|
||||
|
||||
namespace Imp
|
||||
|
||||
structure WF (m: Imp β): Prop where
|
||||
capacity: m.data.size = m.deallocs.size
|
||||
front_dealloc: ∀ i: Fin m.deallocs.size, (i < m.allocFront) → (m.deallocs.get i) < m.allocFront
|
||||
front_data: ∀ i: Fin m.data.size, (i ≥ m.allocFront) → (m.data.get i).isNone
|
||||
|
||||
def empty (capacity := 16): Imp β :=
|
||||
{
|
||||
data := mkArray capacity .none,
|
||||
size := 0,
|
||||
allocFront := 0,
|
||||
deallocs := mkArray capacity 0,
|
||||
lastDealloc := 0,
|
||||
}
|
||||
|
||||
private theorem list_get_replicate (x: α) (i: Fin (List.replicate n x).length):
|
||||
List.get (List.replicate n x) i = x := by
|
||||
sorry
|
||||
|
||||
theorem empty_wf : WF (empty n: Imp β) := by
|
||||
unfold empty
|
||||
apply WF.mk
|
||||
case capacity =>
|
||||
conv =>
|
||||
lhs
|
||||
congr
|
||||
simp
|
||||
conv =>
|
||||
rhs
|
||||
congr
|
||||
simp
|
||||
simp
|
||||
case front_dealloc =>
|
||||
simp_all
|
||||
intro i
|
||||
intro a
|
||||
contradiction
|
||||
case front_data =>
|
||||
simp_all
|
||||
intro i
|
||||
unfold Imp.data at i
|
||||
simp at i
|
||||
conv =>
|
||||
lhs
|
||||
unfold Array.get
|
||||
unfold mkArray
|
||||
simp [List.replicate]
|
||||
rewrite [list_get_replicate]
|
||||
|
||||
-- FIXME: Merge this with the well-formed versions below so proof and code can
|
||||
-- mesh seamlessly.
|
||||
@[inline] def insert (map: Imp β) (v: β): (Imp β × Nat) :=
|
||||
match map.lastDealloc with
|
||||
| 0 => -- Capacity is full, buffer expansion is required
|
||||
if map.size == map.data.size then
|
||||
let nextIndex := map.data.size
|
||||
let extendCapacity := map.size
|
||||
let result: Imp β := {
|
||||
data := (map.data.append #[Option.some v]).append (mkArray extendCapacity .none),
|
||||
size := map.size + 1,
|
||||
allocFront := map.size + 1,
|
||||
deallocs := mkArray (map.data.size + 1 + extendCapacity) 0,
|
||||
lastDealloc := 0,
|
||||
}
|
||||
(result, nextIndex)
|
||||
else
|
||||
let nextIndex := map.size
|
||||
let result: Imp β := {
|
||||
map
|
||||
with
|
||||
data := map.data.set ⟨nextIndex, sorry⟩ (Option.some v),
|
||||
size := map.size + 1,
|
||||
allocFront := map.allocFront + 1,
|
||||
}
|
||||
(result, nextIndex)
|
||||
| (.succ k) => -- Allocation list has space
|
||||
let nextIndex := map.deallocs.get! k
|
||||
let result: Imp β := {
|
||||
map with
|
||||
data := map.data.set ⟨nextIndex, sorry⟩ (Option.some v),
|
||||
size := map.size + 1,
|
||||
lastDealloc := map.lastDealloc - 1
|
||||
}
|
||||
(result, nextIndex)
|
||||
|
||||
@[inline] def remove (map: Imp β) (index: Fin (map.size)): Imp β :=
|
||||
have h: index.val < map.data.size := by sorry
|
||||
match map.data.get ⟨index.val, h⟩ with
|
||||
| .none => map
|
||||
| .some _ =>
|
||||
{
|
||||
map with
|
||||
data := map.data.set ⟨index, sorry⟩ .none,
|
||||
size := map.size - 1,
|
||||
deallocs := map.deallocs.set ⟨map.lastDealloc, sorry⟩ index,
|
||||
lastDealloc := map.lastDealloc + 1,
|
||||
}
|
||||
|
||||
/-- Retrieval is efficient -/
|
||||
@[inline] def get? (map: Imp β) (index: Fin (map.size)): Option β :=
|
||||
have h: index.val < map.data.size := by sorry
|
||||
map.data.get ⟨index.val, h⟩
|
||||
@[inline] def capacity (map: Imp β): Nat := map.data.size
|
||||
|
||||
end Imp
|
||||
|
||||
|
||||
/--
|
||||
This is like a hashmap but you cannot control the keys.
|
||||
-/
|
||||
def _root_.Pantograph.SemihashMap β := {m: Imp β // m.WF}
|
||||
|
||||
@[inline] def empty (capacity := 16): SemihashMap β :=
|
||||
⟨ Imp.empty capacity, Imp.empty_wf ⟩
|
||||
@[inline] def insert (map: SemihashMap β) (v: β): (SemihashMap β × Nat) :=
|
||||
let ⟨imp, pre⟩ := map
|
||||
let ⟨result, id⟩ := imp.insert v
|
||||
( ⟨ result, sorry ⟩, id)
|
||||
@[inline] def remove (map: SemihashMap β) (index: Nat): SemihashMap β :=
|
||||
let ⟨imp, pre⟩ := map
|
||||
let result := imp.remove ⟨index, sorry⟩
|
||||
⟨ result, sorry ⟩
|
||||
@[inline] def get? (map: SemihashMap β) (index: Nat): Option β :=
|
||||
let ⟨imp, _⟩ := map
|
||||
imp.get? ⟨index, sorry⟩
|
||||
@[inline] def size (map: SemihashMap β): Nat :=
|
||||
let ⟨imp, _⟩ := map
|
||||
imp.size
|
||||
|
||||
end Pantograph.SemihashMap
|
Loading…
Reference in New Issue