version bump, restructure
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Main.lean
213
Main.lean
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@ -1,173 +1,8 @@
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import Lean.Data.Json
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import Lean.Environment
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import Pantograph.Commands
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import Pantograph.Serial
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import Pantograph.Meta
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import Pantograph.Symbols
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namespace Pantograph
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structure Context where
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/-- Stores state of the REPL -/
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structure State where
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--environments: Array Lean.Environment := #[]
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proofTrees: Array ProofTree := #[]
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-- State monad
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abbrev Subroutine := ReaderT Context (StateT State Lean.Elab.TermElabM)
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open Commands
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/-- Parse a command either in `{ "cmd": ..., "payload": ... }` form or `cmd { ... }` form. -/
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def parse_command (s: String): Except String Command := do
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let s := s.trim
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match s.get? 0 with
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| .some '{' => -- Parse in Json mode
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Lean.fromJson? (← Lean.Json.parse s)
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| .some _ => -- Parse in line mode
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let offset := s.posOf ' ' |> s.offsetOfPos
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if offset = s.length then
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return { cmd := s.take offset, payload := Lean.Json.null }
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else
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let payload ← s.drop offset |> Lean.Json.parse
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return { cmd := s.take offset, payload := payload }
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| .none => throw "Command is empty"
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def execute (command: Command): Subroutine Lean.Json := do
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match command.cmd with
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| "catalog" =>
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match Lean.fromJson? command.payload with
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| .ok args => catalog args
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| .error x => return errorJson x
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| "inspect" =>
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match Lean.fromJson? command.payload with
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| .ok args => inspect args
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| .error x => return errorJson x
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| "clear" => clear
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| "expr.type" =>
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match Lean.fromJson? command.payload with
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| .ok args => expr_type args
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| .error x => return errorJson x
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| "proof.start" =>
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match Lean.fromJson? command.payload with
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| .ok args => proof_start args
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| .error x => return errorJson x
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| "proof.tactic" =>
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match Lean.fromJson? command.payload with
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| .ok args => proof_tactic args
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| .error x => return errorJson x
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| "proof.printTree" =>
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match Lean.fromJson? command.payload with
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| .ok args => proof_print_tree args
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| .error x => return errorJson x
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| cmd =>
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let error: InteractionError := { error := "unknown", desc := s!"Unknown command {cmd}" }
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return Lean.toJson error
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where
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errorI (type desc: String) := Lean.toJson ({ error := type, desc := desc }: InteractionError)
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errorJson := errorI "json"
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errorIndex := errorI "index"
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catalog (_: Catalog): Subroutine Lean.Json := do
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let env ← Lean.MonadEnv.getEnv
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let names := env.constants.fold (init := #[]) (λ acc name info =>
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match to_filtered_symbol name info with
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| .some x => acc.push x
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| .none => acc)
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return Lean.toJson <| ({ symbols := names }: CatalogResult)
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inspect (args: Inspect): Subroutine Lean.Json := do
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let env ← Lean.MonadEnv.getEnv
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let name := str_to_name args.name
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let info? := env.find? name
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match info? with
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| none => return errorIndex s!"Symbol not found {args.name}"
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| some info =>
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let format ← Lean.Meta.ppExpr info.toConstantVal.type
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let module? := env.getModuleIdxFor? name >>=
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(λ idx => env.allImportedModuleNames.get? idx.toNat) |>.map toString
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let boundExpr? ← (match info.toConstantVal.type with
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| .forallE _ _ _ _ => return .some (← type_expr_to_bound info.toConstantVal.type)
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| _ => return Option.none)
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return Lean.toJson ({
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type := toString format,
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boundExpr? := boundExpr?,
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module? := module?
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}: InspectResult)
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clear : Subroutine Lean.Json := do
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let state ← get
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let nTrees := state.proofTrees.size
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set { state with proofTrees := #[] }
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return Lean.toJson ({ nTrees := nTrees }: ClearResult)
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expr_type (args: ExprType): Subroutine Lean.Json := do
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let env ← Lean.MonadEnv.getEnv
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match syntax_from_str env args.expr with
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| .error str => return errorI "parsing" str
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| .ok syn => do
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match (← syntax_to_expr syn) with
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| .error str => return errorI "elab" str
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| .ok expr => do
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try
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let format ← Lean.Meta.ppExpr (← Lean.Meta.inferType expr)
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return Lean.toJson <| ({
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type := toString format,
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roundTrip := toString <| (← Lean.Meta.ppExpr expr)
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}: ExprTypeResult)
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catch exception =>
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return errorI "typing" (← exception.toMessageData.toString)
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proof_start (args: ProofStart): Subroutine Lean.Json := do
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let state ← get
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let env ← Lean.MonadEnv.getEnv
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let expr?: Except Lean.Json Lean.Expr ← (match args.expr, args.copyFrom with
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| .some expr, .none =>
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(match syntax_from_str env expr with
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| .error str => return .error <| errorI "parsing" str
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| .ok syn => do
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(match (← syntax_to_expr syn) with
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| .error str => return .error <| errorI "elab" str
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| .ok expr => return .ok expr))
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| .none, .some copyFrom =>
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(match env.find? <| str_to_name copyFrom with
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| .none => return .error <| errorIndex s!"Symbol not found: {copyFrom}"
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| .some cInfo => return .ok cInfo.type)
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| .none, .none =>
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return .error <| errorI "arguments" "At least one of {expr, copyFrom} must be supplied"
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| _, _ => return .error <| errorI "arguments" "Cannot populate both of {expr, copyFrom}")
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match expr? with
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| .error error => return error
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| .ok expr =>
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let tree ← ProofTree.create (str_to_name <| args.name.getD "Untitled") expr
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-- Put the new tree in the environment
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let nextTreeId := state.proofTrees.size
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set { state with proofTrees := state.proofTrees.push tree }
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return Lean.toJson ({ treeId := nextTreeId }: ProofStartResult)
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proof_tactic (args: ProofTactic): Subroutine Lean.Json := do
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let state ← get
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match state.proofTrees.get? args.treeId with
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| .none => return errorIndex "Invalid tree index {args.treeId}"
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| .some tree =>
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let (result, nextTree) ← ProofTree.execute
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(stateId := args.stateId)
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(goalId := args.goalId.getD 0)
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(tactic := args.tactic) |>.run tree
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match result with
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| .invalid message => return Lean.toJson <| errorIndex message
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| .success nextId? goals =>
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set { state with proofTrees := state.proofTrees.set! args.treeId nextTree }
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return Lean.toJson ({ nextId? := nextId?, goals := goals }: ProofTacticResultSuccess)
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| .failure messages =>
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return Lean.toJson ({ tacticErrors := messages }: ProofTacticResultFailure)
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proof_print_tree (args: ProofPrintTree): Subroutine Lean.Json := do
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let state ← get
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match state.proofTrees.get? args.treeId with
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| .none => return errorIndex "Invalid tree index {args.treeId}"
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| .some tree =>
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return Lean.toJson ({parents := tree.structure_array}: ProofPrintTreeResult)
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end Pantograph
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import Pantograph.Version
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import Pantograph
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-- Main IO functions
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open Pantograph
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@ -184,38 +19,22 @@ unsafe def loop : Subroutine Unit := do
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IO.println <| toString <| ret
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loop
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namespace Lean
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-- This is better than the default version since it handles `.`
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def setOptionFromString' (opts : Options) (entry : String) : IO Options := do
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let ps := (entry.splitOn "=").map String.trim
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let [key, val] ← pure ps | throw $ IO.userError "invalid configuration option entry, it must be of the form '<key> = <value>'"
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let key := str_to_name key
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let defValue ← getOptionDefaultValue key
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match defValue with
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| DataValue.ofString _ => pure $ opts.setString key val
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| DataValue.ofBool _ =>
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match val with
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| "true" => pure $ opts.setBool key true
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| "false" => pure $ opts.setBool key false
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| _ => throw $ IO.userError s!"invalid Bool option value '{val}'"
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| DataValue.ofName _ => pure $ opts.setName key val.toName
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| DataValue.ofNat _ =>
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match val.toNat? with
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| none => throw (IO.userError s!"invalid Nat option value '{val}'")
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| some v => pure $ opts.setNat key v
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| DataValue.ofInt _ =>
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match val.toInt? with
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| none => throw (IO.userError s!"invalid Int option value '{val}'")
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| some v => pure $ opts.setInt key v
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| DataValue.ofSyntax _ => throw (IO.userError s!"invalid Syntax option value")
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end Lean
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unsafe def main (args: List String): IO Unit := do
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-- NOTE: A more sophisticated scheme of command line argument handling is needed.
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-- Separate imports and options
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if args == ["--version"] then do
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println! s!"{version}"
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return
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Lean.enableInitializersExecution
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Lean.initSearchPath (← Lean.findSysroot)
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-- Separate imports and options
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let options := args.filterMap (λ s => if s.startsWith "--" then .some <| s.drop 2 else .none)
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let options? ← args.filterMap (λ s => if s.startsWith "--" then .some <| s.drop 2 else .none)
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|>.foldlM Lean.setOptionFromString'' Lean.Options.empty
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|>.run
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let options ← match options? with
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| .ok options => pure options
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| .error e => throw $ IO.userError s!"Options cannot be parsed: {e}"
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let imports:= args.filter (λ s => ¬ (s.startsWith "--"))
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let env ← Lean.importModules
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@ -225,11 +44,11 @@ unsafe def main (args: List String): IO Unit := do
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let context: Context := {
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}
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let coreContext: Lean.Core.Context := {
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currNamespace := str_to_name "Aniva",
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currNamespace := Lean.Name.str .anonymous "Aniva"
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openDecls := [], -- No 'open' directives needed
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fileName := "<Pantograph>",
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fileMap := { source := "", positions := #[0], lines := #[1] },
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options := ← options.foldlM Lean.setOptionFromString' Lean.Options.empty
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options := options
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}
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try
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let termElabM := loop.run context |>.run' {}
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207
Pantograph.lean
207
Pantograph.lean
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@ -1,2 +1,209 @@
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import Pantograph.Commands
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import Pantograph.Serial
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import Pantograph.Meta
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import Pantograph.Symbols
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namespace Lean
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-- This is better than the default version since it handles `.` and doesn't
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-- crash the program when it fails.
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def setOptionFromString'' (opts : Options) (entry : String) : ExceptT String IO Options := do
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let ps := (entry.splitOn "=").map String.trim
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let [key, val] ← pure ps | throw "invalid configuration option entry, it must be of the form '<key> = <value>'"
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let key := Pantograph.str_to_name key
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let defValue ← getOptionDefaultValue key
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match defValue with
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| DataValue.ofString _ => pure $ opts.setString key val
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| DataValue.ofBool _ =>
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match val with
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| "true" => pure $ opts.setBool key true
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| "false" => pure $ opts.setBool key false
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| _ => throw s!"invalid Bool option value '{val}'"
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| DataValue.ofName _ => pure $ opts.setName key val.toName
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| DataValue.ofNat _ =>
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match val.toNat? with
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| none => throw s!"invalid Nat option value '{val}'"
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| some v => pure $ opts.setNat key v
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| DataValue.ofInt _ =>
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match val.toInt? with
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| none => throw s!"invalid Int option value '{val}'"
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| some v => pure $ opts.setInt key v
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| DataValue.ofSyntax _ => throw s!"invalid Syntax option value"
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end Lean
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namespace Pantograph
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structure Context where
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/-- Stores state of the REPL -/
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structure State where
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--environments: Array Lean.Environment := #[]
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proofTrees: Array ProofTree := #[]
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-- State monad
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abbrev Subroutine := ReaderT Context (StateT State Lean.Elab.TermElabM)
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/-- Parse a command either in `{ "cmd": ..., "payload": ... }` form or `cmd { ... }` form. -/
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def parse_command (s: String): Except String Commands.Command := do
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let s := s.trim
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match s.get? 0 with
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| .some '{' => -- Parse in Json mode
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Lean.fromJson? (← Lean.Json.parse s)
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| .some _ => -- Parse in line mode
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let offset := s.posOf ' ' |> s.offsetOfPos
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if offset = s.length then
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return { cmd := s.take offset, payload := Lean.Json.null }
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else
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let payload ← s.drop offset |> Lean.Json.parse
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return { cmd := s.take offset, payload := payload }
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| .none => throw "Command is empty"
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def execute (command: Commands.Command): Subroutine Lean.Json := do
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match command.cmd with
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| "option.set" =>
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match Lean.fromJson? command.payload with
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| .ok args => option_set args
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| .error x => return errorJson x
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| "catalog" =>
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match Lean.fromJson? command.payload with
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| .ok args => catalog args
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| .error x => return errorJson x
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| "inspect" =>
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match Lean.fromJson? command.payload with
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| .ok args => inspect args
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| .error x => return errorJson x
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| "clear" => clear
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| "expr.type" =>
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match Lean.fromJson? command.payload with
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| .ok args => expr_type args
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| .error x => return errorJson x
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| "proof.start" =>
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match Lean.fromJson? command.payload with
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| .ok args => proof_start args
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| .error x => return errorJson x
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| "proof.tactic" =>
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match Lean.fromJson? command.payload with
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| .ok args => proof_tactic args
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| .error x => return errorJson x
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| "proof.printTree" =>
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match Lean.fromJson? command.payload with
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| .ok args => proof_print_tree args
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| .error x => return errorJson x
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| cmd =>
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let error: Commands.InteractionError :=
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{ error := "unknown", desc := s!"Unknown command {cmd}" }
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return Lean.toJson error
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where
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errorI (type desc: String) := Lean.toJson (
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{ error := type, desc := desc }: Commands.InteractionError)
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errorJson := errorI "json"
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errorIndex := errorI "index"
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option_set (args: Commands.OptionSet): Subroutine Lean.Json := do
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let options? ← args.options.foldlM Lean.setOptionFromString'' Lean.Options.empty
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|>.run
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match options? with
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| .ok options =>
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withTheReader Lean.Core.Context
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(λ coreContext => { coreContext with options })
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(pure $ Lean.toJson <| ({ }: Commands.OptionSetResult))
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| .error e =>
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return errorI "parsing" e
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catalog (_: Commands.Catalog): Subroutine Lean.Json := do
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let env ← Lean.MonadEnv.getEnv
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let names := env.constants.fold (init := #[]) (λ acc name info =>
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match to_filtered_symbol name info with
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| .some x => acc.push x
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| .none => acc)
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return Lean.toJson <| ({ symbols := names }: Commands.CatalogResult)
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inspect (args: Commands.Inspect): Subroutine Lean.Json := do
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let env ← Lean.MonadEnv.getEnv
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let name := str_to_name args.name
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let info? := env.find? name
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match info? with
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| none => return errorIndex s!"Symbol not found {args.name}"
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| some info =>
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let format ← Lean.Meta.ppExpr info.toConstantVal.type
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let module? := env.getModuleIdxFor? name >>=
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(λ idx => env.allImportedModuleNames.get? idx.toNat) |>.map toString
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let boundExpr? ← (match info.toConstantVal.type with
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| .forallE _ _ _ _ => return Option.none -- TODO: Temporary override, enable expression dissection in options.
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-- return .some (← type_expr_to_bound info.toConstantVal.type)
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| _ => return Option.none)
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return Lean.toJson ({
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type := toString format,
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boundExpr? := boundExpr?,
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module? := module?
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}: Commands.InspectResult)
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clear : Subroutine Lean.Json := do
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let state ← get
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let nTrees := state.proofTrees.size
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set { state with proofTrees := #[] }
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return Lean.toJson ({ nTrees := nTrees }: Commands.ClearResult)
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expr_type (args: Commands.ExprType): Subroutine Lean.Json := do
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let env ← Lean.MonadEnv.getEnv
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match syntax_from_str env args.expr with
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| .error str => return errorI "parsing" str
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| .ok syn => do
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match (← syntax_to_expr syn) with
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| .error str => return errorI "elab" str
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| .ok expr => do
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try
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let format ← Lean.Meta.ppExpr (← Lean.Meta.inferType expr)
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return Lean.toJson <| ({
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type := toString format,
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roundTrip := toString <| (← Lean.Meta.ppExpr expr)
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}: Commands.ExprTypeResult)
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catch exception =>
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return errorI "typing" (← exception.toMessageData.toString)
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proof_start (args: Commands.ProofStart): Subroutine Lean.Json := do
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let state ← get
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let env ← Lean.MonadEnv.getEnv
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let expr?: Except Lean.Json Lean.Expr ← (match args.expr, args.copyFrom with
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| .some expr, .none =>
|
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(match syntax_from_str env expr with
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| .error str => return .error <| errorI "parsing" str
|
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| .ok syn => do
|
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(match (← syntax_to_expr syn) with
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| .error str => return .error <| errorI "elab" str
|
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| .ok expr => return .ok expr))
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| .none, .some copyFrom =>
|
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(match env.find? <| str_to_name copyFrom with
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| .none => return .error <| errorIndex s!"Symbol not found: {copyFrom}"
|
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| .some cInfo => return .ok cInfo.type)
|
||||
| .none, .none =>
|
||||
return .error <| errorI "arguments" "At least one of {expr, copyFrom} must be supplied"
|
||||
| _, _ => return .error <| errorI "arguments" "Cannot populate both of {expr, copyFrom}")
|
||||
match expr? with
|
||||
| .error error => return error
|
||||
| .ok expr =>
|
||||
let tree ← ProofTree.create (str_to_name <| args.name.getD "Untitled") expr
|
||||
-- Put the new tree in the environment
|
||||
let nextTreeId := state.proofTrees.size
|
||||
set { state with proofTrees := state.proofTrees.push tree }
|
||||
return Lean.toJson ({ treeId := nextTreeId }: Commands.ProofStartResult)
|
||||
proof_tactic (args: Commands.ProofTactic): Subroutine Lean.Json := do
|
||||
let state ← get
|
||||
match state.proofTrees.get? args.treeId with
|
||||
| .none => return errorIndex "Invalid tree index {args.treeId}"
|
||||
| .some tree =>
|
||||
let (result, nextTree) ← ProofTree.execute
|
||||
(stateId := args.stateId)
|
||||
(goalId := args.goalId.getD 0)
|
||||
(tactic := args.tactic) |>.run tree
|
||||
match result with
|
||||
| .invalid message => return Lean.toJson <| errorIndex message
|
||||
| .success nextId? goals =>
|
||||
set { state with proofTrees := state.proofTrees.set! args.treeId nextTree }
|
||||
return Lean.toJson (
|
||||
{ nextId? := nextId?, goals := goals }: Commands.ProofTacticResultSuccess)
|
||||
| .failure messages =>
|
||||
return Lean.toJson (
|
||||
{ tacticErrors := messages }: Commands.ProofTacticResultFailure)
|
||||
proof_print_tree (args: Commands.ProofPrintTree): Subroutine Lean.Json := do
|
||||
let state ← get
|
||||
match state.proofTrees.get? args.treeId with
|
||||
| .none => return errorIndex "Invalid tree index {args.treeId}"
|
||||
| .some tree =>
|
||||
return Lean.toJson ({parents := tree.structure_array}: Commands.ProofPrintTreeResult)
|
||||
|
||||
|
||||
end Pantograph
|
||||
|
|
|
|||
|
|
@ -21,7 +21,16 @@ structure InteractionError where
|
|||
deriving Lean.ToJson
|
||||
|
||||
|
||||
-- Individual command and return types
|
||||
--- Individual command and return types ---
|
||||
|
||||
-- Set Lean options supplied in the form of
|
||||
--
|
||||
-- option=value
|
||||
structure OptionSet where
|
||||
options: Array String
|
||||
deriving Lean.FromJson
|
||||
structure OptionSetResult where
|
||||
deriving Lean.ToJson
|
||||
|
||||
|
||||
-- Print all symbols in environment
|
||||
|
|
@ -38,7 +47,7 @@ structure Inspect where
|
|||
structure InspectResult where
|
||||
type: String
|
||||
-- Decompose the bound expression when the type is forall.
|
||||
boundExpr?: Option BoundExpression
|
||||
boundExpr?: Option BoundExpression := Option.none
|
||||
module?: Option String
|
||||
deriving Lean.ToJson
|
||||
|
||||
|
|
|
|||
|
|
@ -117,4 +117,64 @@ def serialize_goal (mvarDecl: MetavarDecl) : MetaM Goal := do
|
|||
vars := vars.reverse.toArray
|
||||
}
|
||||
|
||||
/-- Completely serialises an expression tree. Json not used due to compactness -/
|
||||
def serialize_expression_ast (expr: Expr): MetaM String := do
|
||||
match expr with
|
||||
| .bvar deBruijnIndex => return s!"(:bv {deBruijnIndex})"
|
||||
| .fvar fvarId =>
|
||||
let name := (← fvarId.getDecl).userName
|
||||
return s!"(:fv {name})"
|
||||
| .mvar _ =>
|
||||
-- mvarId is ignored.
|
||||
return s!":mv"
|
||||
| .sort u => return s!"(:sort {u.depth})"
|
||||
| .const declName _ =>
|
||||
-- The universe level of the const expression is elided since it should be
|
||||
-- inferrable from surrounding expression
|
||||
return s!"(:const {declName})"
|
||||
| .app fn arg =>
|
||||
let fn' ← serialize_expression_ast fn
|
||||
let arg' ← serialize_expression_ast arg
|
||||
return s!"(:app {fn'} {arg'})"
|
||||
| .lam binderName binderType body binderInfo =>
|
||||
let binderType' ← serialize_expression_ast binderType
|
||||
let body' ← serialize_expression_ast body
|
||||
let binderInfo' := binderInfoToAst binderInfo
|
||||
return s!"(:lam {binderName} {binderType'} {body'} :{binderInfo'})"
|
||||
| .forallE binderName binderType body binderInfo =>
|
||||
let binderType' ← serialize_expression_ast binderType
|
||||
let body' ← serialize_expression_ast body
|
||||
let binderInfo' := binderInfoToAst binderInfo
|
||||
return s!"(:forall {binderName} {binderType'} {body'} :{binderInfo'})"
|
||||
| .letE name type value body _ =>
|
||||
-- Dependent boolean flag diacarded
|
||||
let type' ← serialize_expression_ast type
|
||||
let value' ← serialize_expression_ast value
|
||||
let body' ← serialize_expression_ast body
|
||||
return s!"(:let {name} {type'} {value'} {body'})"
|
||||
| .lit v =>
|
||||
return (match v with
|
||||
| .natVal val => toString val
|
||||
| .strVal val => s!"\"{val}\"")
|
||||
| .mdata _ expr =>
|
||||
-- NOTE: Equivalent to expr itself, but mdata influences the prettyprinter
|
||||
return (← serialize_expression_ast expr)
|
||||
| .proj typeName idx struct =>
|
||||
let struct' ← serialize_expression_ast struct
|
||||
return s!"(:proj {typeName} {idx} {struct'})"
|
||||
|
||||
where
|
||||
binderInfoToAst : Lean.BinderInfo → String
|
||||
| .default => "default"
|
||||
| .implicit => "implicit"
|
||||
| .strictImplicit => "strictImplicit"
|
||||
| .instImplicit => "instImplicit"
|
||||
|
||||
/-- Serialised expression object --/
|
||||
structure Expression where
|
||||
prettyprinted?: Option String := .none
|
||||
bound?: Option BoundExpression := .none
|
||||
sexp?: Option String := .none
|
||||
deriving ToJson
|
||||
|
||||
end Pantograph
|
||||
|
|
|
|||
|
|
@ -0,0 +1,5 @@
|
|||
namespace Pantograph
|
||||
|
||||
def version := "0.2"
|
||||
|
||||
end Pantograph
|
||||
|
|
@ -23,7 +23,7 @@ Note that `lean-toolchain` must be present in the `$PWD` in order to run Pantogr
|
|||
## Usage
|
||||
|
||||
``` sh
|
||||
build/bin/pantograph OPTIONS|MODULES
|
||||
build/bin/pantograph MODULES|LEAN_OPTIONS
|
||||
```
|
||||
|
||||
The REPL loop accepts commands as single-line JSON inputs and outputs either an
|
||||
|
|
@ -37,7 +37,7 @@ The list of available commands can be found in `Pantograph/Commands.lean`. An
|
|||
empty command aborts the REPL.
|
||||
|
||||
The `Pantograph` executable must be run with a list of modules to import. It can
|
||||
also accept options of the form `--key=value` e.g. `--pp.raw=true`.
|
||||
also accept lean options of the form `--key=value` e.g. `--pp.raw=true`.
|
||||
|
||||
Example: (~5k symbols)
|
||||
```
|
||||
|
|
|
|||
|
|
@ -1,5 +1,5 @@
|
|||
import LSpec
|
||||
import Pantograph.Symbols
|
||||
import Test.Integration
|
||||
import Test.Proofs
|
||||
import Test.Serial
|
||||
|
||||
|
|
@ -12,6 +12,7 @@ unsafe def main := do
|
|||
let suites := [
|
||||
test_serial,
|
||||
test_proofs
|
||||
--test_integration
|
||||
]
|
||||
let all ← suites.foldlM (λ acc m => do pure $ acc ++ (← m)) LSpec.TestSeq.done
|
||||
LSpec.lspecIO $ all
|
||||
|
|
|
|||
|
|
@ -1 +1 @@
|
|||
leanprover/lean4:nightly-2023-05-06
|
||||
leanprover/lean4:nightly-2023-08-12
|
||||
|
|
|
|||
Loading…
Reference in New Issue