feat: Prograde tactics #83

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aniva merged 24 commits from tactic/eval into dev 2024-08-31 20:04:39 -07:00
13 changed files with 192 additions and 184 deletions
Showing only changes of commit e07f9d9b3f - Show all commits

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@ -1,21 +1,13 @@
/- structures for FFI based interface -/
import Lean
import Pantograph.Goal
import Pantograph.Expr
import Pantograph.Protocol
open Lean
namespace Pantograph.Condensed
/-
These two functions are for user defiend names. For internal names such as
`_uniq`, it is favourable to use `lean_name_hash_exported` and `lean_name_eq` to
construct hash maps for Lean names.
-/
@[export pantograph_str_to_name]
def strToName (s: String) : Name := s.toName
@[export pantograph_name_to_str]
def nameToStr (s: String) : Name := s.toName
@[export pantograph_name_is_inaccessible]
def isInaccessible (n: Name) : Bool := n.isInaccessibleUserName
namespace Pantograph
namespace Condensed
-- Mirrors Lean's LocalDecl
structure LocalDecl where
@ -36,7 +28,69 @@ structure Goal where
@[export pantograph_goal_is_lhs]
def isLHS (g: Goal) : Bool := isLHSGoal? g.target |>.isSome
-- Functions for creating contexts and states
@[export pantograph_elab_context]
def elabContext: Elab.Term.Context := {
errToSorry := false
}
end Condensed
-- Get the list of visible (by default) free variables from a goal
@[export pantograph_visible_fvars_of_mvar]
protected def visibleFVarsOfMVar (mctx: MetavarContext) (mvarId: MVarId): Option (Array FVarId) := do
let mvarDecl ← mctx.findDecl? mvarId
let lctx := mvarDecl.lctx
return lctx.decls.foldl (init := #[]) fun r decl? => match decl? with
| some decl => if decl.isAuxDecl decl.isImplementationDetail then r else r.push decl.fvarId
| none => r
end Pantograph.Condensed
@[export pantograph_to_condensed_goal_m]
def toCondensedGoal (mvarId: MVarId): MetaM Condensed.Goal := do
let ppAuxDecls := Meta.pp.auxDecls.get (← getOptions)
let ppImplDetailHyps := Meta.pp.implementationDetailHyps.get (← getOptions)
let mvarDecl ← mvarId.getDecl
let lctx := mvarDecl.lctx
let lctx := lctx.sanitizeNames.run' { options := (← getOptions) }
Meta.withLCtx lctx mvarDecl.localInstances do
let ppVar (localDecl : LocalDecl) : MetaM Condensed.LocalDecl := do
match localDecl with
| .cdecl _ fvarId userName type _ _ =>
let type ← instantiate type
return { fvarId, userName, type }
| .ldecl _ fvarId userName type value _ _ => do
let userName := userName.simpMacroScopes
let type ← instantiate type
let value ← instantiate value
return { fvarId, userName, type, value? := .some value }
let vars ← lctx.foldlM (init := []) fun acc (localDecl : LocalDecl) => do
let skip := !ppAuxDecls && localDecl.isAuxDecl ||
!ppImplDetailHyps && localDecl.isImplementationDetail
if skip then
return acc
else
let var ← ppVar localDecl
return var::acc
return {
mvarId,
userName := mvarDecl.userName,
context := vars.reverse.toArray,
target := ← instantiate mvarDecl.type
}
where
instantiate := instantiateAll
@[export pantograph_goal_state_to_condensed_m]
protected def GoalState.toCondensed (state: GoalState):
CoreM (Array Condensed.Goal):= do
let metaM := do
let goals := state.goals.toArray
goals.mapM fun goal => do
match state.mctx.findDecl? goal with
| .some _ =>
let serializedGoal ← toCondensedGoal goal
pure serializedGoal
| .none => throwError s!"Metavariable does not exist in context {goal.name}"
metaM.run' (s := state.savedState.term.meta.meta)
end Pantograph

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@ -7,15 +7,36 @@ open Pantograph
namespace Pantograph.Environment
def isNameInternal (n: Lean.Name): Bool :=
@[export pantograph_is_name_internal]
def isNameInternal (n: Name): Bool :=
-- Returns true if the name is an implementation detail which should not be shown to the user.
isLeanSymbol n (Lean.privateToUserName? n |>.map isLeanSymbol |>.getD false) n.isAuxLemma n.hasMacroScopes
where
isLeanSymbol (name: Lean.Name): Bool := match name.getRoot with
isLeanSymbol (name: Name): Bool := match name.getRoot with
| .str _ name => name == "Lean"
| _ => true
def toCompactSymbolName (n: Lean.Name) (info: Lean.ConstantInfo): String :=
/-- Catalog all the non-internal and safe names -/
@[export pantograph_environment_catalog]
def env_catalog (env: Environment): Array Name := env.constants.fold (init := #[]) (λ acc name info =>
match isNameInternal name || info.isUnsafe with
| false => acc.push name
| true => acc)
@[export pantograph_environment_module_of_name]
def module_of_name (env: Environment) (name: Name): Option Name := do
let moduleId ← env.getModuleIdxFor? name
return env.allImportedModuleNames.get! moduleId.toNat
@[export pantograph_constant_info_is_unsafe_or_partial]
def constantInfoIsUnsafeOrPartial (info: ConstantInfo): Bool := info.isUnsafe || info.isPartial
@[export pantograph_constant_info_type]
def constantInfoType (info: ConstantInfo): CoreM Expr := unfoldAuxLemmas info.type
@[export pantograph_constant_info_value]
def constantInfoValue (info: ConstantInfo): CoreM (Option Expr) := info.value?.mapM unfoldAuxLemmas
def toCompactSymbolName (n: Name) (info: ConstantInfo): String :=
let pref := match info with
| .axiomInfo _ => "a"
| .defnInfo _ => "d"

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@ -4,9 +4,29 @@ open Lean
namespace Pantograph
structure ProjectionApplication where
projector: Name
numParams: Nat
inner: Expr
@[export pantograph_expr_proj_to_app]
def exprProjToApp (env: Environment) (e: Expr): ProjectionApplication :=
let (typeName, idx, inner) := match e with
| .proj typeName idx inner => (typeName, idx, inner)
| _ => panic! "Argument must be proj"
let ctor := getStructureCtor env typeName
let fieldName := getStructureFields env typeName |>.get! idx
let projector := getProjFnForField? env typeName fieldName |>.get!
{
projector,
numParams := ctor.numParams,
inner,
}
def _root_.Lean.Name.isAuxLemma (n : Lean.Name) : Bool := n matches .num (.str _ "_auxLemma") _
/-- Unfold all lemmas created by `Lean.Meta.mkAuxLemma`. These end in `_auxLemma.nn` where `nn` is a number. -/
@[export pantograph_unfold_aux_lemmas]
def unfoldAuxLemmas (e : Expr) : CoreM Expr := do
Lean.Meta.deltaExpand e Lean.Name.isAuxLemma
@ -98,7 +118,7 @@ Convert an expression to an equiavlent form with
2. No aux lemmas
3. No assigned mvars
-/
@[export pantograph_instantiate_all_meta_m]
@[export pantograph_instantiate_all_m]
def instantiateAll (e: Expr): MetaM Expr := do
let e ← instantiateDelayedMVars e
let e ← unfoldAuxLemmas e
@ -111,7 +131,7 @@ structure DelayedMVarInvocation where
tail: Array Expr
-- The pending mvar of any delayed assigned mvar must not be assigned in any way.
@[export pantograph_to_delayed_mvar_invocation_meta_m]
@[export pantograph_to_delayed_mvar_invocation_m]
def toDelayedMVarInvocation (e: Expr): MetaM (Option DelayedMVarInvocation) := do
let .mvar mvarId := e.getAppFn | return .none
let .some decl ← getDelayedMVarAssignment? mvarId | return .none

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@ -34,6 +34,7 @@ structure GoalState where
-- WARNING: If using `state with` outside of `calc`, this must be set to `.none`
calcPrevRhs?: Option Expr := .none
@[export pantograph_goal_state_create_m]
protected def GoalState.create (expr: Expr): Elab.TermElabM GoalState := do
-- May be necessary to immediately synthesise all metavariables if we need to leave the elaboration context.
-- See https://leanprover.zulipchat.com/#narrow/stream/270676-lean4/topic/Unknown.20universe.20metavariable/near/360130070
@ -54,6 +55,8 @@ protected def GoalState.isConv (state: GoalState): Bool :=
state.convMVar?.isSome
protected def GoalState.goals (state: GoalState): List MVarId :=
state.savedState.tactic.goals
@[export pantograph_goal_state_goals]
protected def GoalState.goalsArray (state: GoalState): Array MVarId := state.goals.toArray
protected def GoalState.mctx (state: GoalState): MetavarContext :=
state.savedState.term.meta.meta.mctx
protected def GoalState.env (state: GoalState): Environment :=
@ -109,6 +112,7 @@ protected def GoalState.focus (state: GoalState) (goalId: Nat): Option GoalState
/--
Brings into scope a list of goals
-/
@[export pantograph_goal_state_resume]
protected def GoalState.resume (state: GoalState) (goals: List MVarId): Except String GoalState :=
if ¬ (goals.all (λ goal => state.mvars.contains goal)) then
let invalid_goals := goals.filter (λ goal => ¬ state.mvars.contains goal) |>.map (·.name.toString)
@ -137,6 +141,7 @@ protected def GoalState.continue (target: GoalState) (branch: GoalState): Except
else
target.resume (goals := branch.goals)
@[export pantograph_goal_state_root_expr]
protected def GoalState.rootExpr? (goalState: GoalState): Option Expr := do
let expr ← goalState.mctx.eAssignment.find? goalState.root
let (expr, _) := instantiateMVarsCore (mctx := goalState.mctx) (e := expr)
@ -147,12 +152,14 @@ protected def GoalState.rootExpr? (goalState: GoalState): Option Expr := do
else
assert! goalState.goals.isEmpty
return expr
@[export pantograph_goal_state_parent_expr]
protected def GoalState.parentExpr? (goalState: GoalState): Option Expr := do
let parent ← goalState.parentMVar?
let expr := goalState.mctx.eAssignment.find! parent
let (expr, _) := instantiateMVarsCore (mctx := goalState.mctx) (e := expr)
return expr
protected def GoalState.assignedExprOf? (goalState: GoalState) (mvar: MVarId): Option Expr := do
@[export pantograph_goal_state_get_mvar_e_assignment]
protected def GoalState.getMVarEAssignment (goalState: GoalState) (mvar: MVarId): Option Expr := do
let expr ← goalState.mctx.eAssignment.find? mvar
let (expr, _) := instantiateMVarsCore (mctx := goalState.mctx) (e := expr)
return expr
@ -172,13 +179,14 @@ inductive TacticResult where
-- The given action cannot be executed in the state
| invalidAction (message: String)
protected def GoalState.execute (state: GoalState) (goalId: Nat) (tacticM: Elab.Tactic.TacticM Unit):
Elab.TermElabM TacticResult := do
/-- Executes a `TacticM` monads on this `GoalState`, collecting the errors as necessary -/
protected def GoalState.tryTacticM (state: GoalState) (goalId: Nat) (tacticM: Elab.Tactic.TacticM Unit):
Elab.TermElabM TacticResult := do
state.restoreElabM
let goal ← match state.savedState.tactic.goals.get? goalId with
| .some goal => pure $ goal
| .none => return .indexError goalId
goal.checkNotAssigned `GoalState.execute
goal.checkNotAssigned `GoalState.tryTacticM
try
let (_, newGoals) ← tacticM { elaborator := .anonymous } |>.run { goals := [goal] }
if (← getThe Core.State).messages.hasErrors then
@ -198,7 +206,7 @@ protected def GoalState.execute (state: GoalState) (goalId: Nat) (tacticM: Elab.
catch exception =>
return .failure #[← exception.toMessageData.toString]
/-- Execute tactic on given state -/
/-- Execute a string tactic on given state -/
protected def GoalState.tryTactic (state: GoalState) (goalId: Nat) (tactic: String):
Elab.TermElabM TacticResult := do
let tactic ← match Parser.runParserCategory
@ -208,68 +216,19 @@ protected def GoalState.tryTactic (state: GoalState) (goalId: Nat) (tactic: Stri
(fileName := filename) with
| .ok stx => pure $ stx
| .error error => return .parseError error
state.execute goalId $ Elab.Tactic.evalTactic tactic
/-- Assumes elabM has already been restored. Assumes expr has already typechecked -/
protected def GoalState.assign (state: GoalState) (goal: MVarId) (expr: Expr):
Elab.TermElabM TacticResult := do
let goalType ← goal.getType
try
-- For some reason this is needed. One of the unit tests will fail if this isn't here
let error?: Option String ← goal.withContext do
let exprType ← Meta.inferType expr
if ← Meta.isDefEq goalType exprType then
pure .none
else do
return .some s!"{← Meta.ppExpr expr} : {← Meta.ppExpr exprType} != {← Meta.ppExpr goalType}"
if let .some error := error? then
return .parseError error
goal.checkNotAssigned `GoalState.assign
goal.assign expr
if (← getThe Core.State).messages.hasErrors then
let messages := (← getThe Core.State).messages.toArray
let errors ← (messages.map (·.data)).mapM fun md => md.toString
return .failure errors
let prevMCtx := state.savedState.term.meta.meta.mctx
let nextMCtx ← getMCtx
-- Generate a list of mvarIds that exist in the parent state; Also test the
-- assertion that the types have not changed on any mvars.
let newMVars := newMVarSet prevMCtx nextMCtx
let nextGoals ← newMVars.toList.filterM (not <$> ·.isAssigned)
return .success {
root := state.root,
savedState := {
term := ← MonadBacktrack.saveState,
tactic := { goals := nextGoals }
},
newMVars,
parentMVar? := .some goal,
calcPrevRhs? := .none
}
catch exception =>
return .failure #[← exception.toMessageData.toString]
state.tryTacticM goalId $ Elab.Tactic.evalTactic tactic
protected def GoalState.tryAssign (state: GoalState) (goalId: Nat) (expr: String):
Elab.TermElabM TacticResult := do
state.restoreElabM
let goal ← match state.savedState.tactic.goals.get? goalId with
| .some goal => pure goal
| .none => return .indexError goalId
goal.checkNotAssigned `GoalState.tryAssign
let expr ← match Parser.runParserCategory
(env := state.env)
(env := ← MonadEnv.getEnv)
(catName := `term)
(input := expr)
(fileName := filename) with
| .ok syn => pure syn
| .error error => return .parseError error
let goalType ← goal.getType
try
let expr ← goal.withContext $
Elab.Term.elabTermAndSynthesize (stx := expr) (expectedType? := .some goalType)
state.assign goal expr
catch exception =>
return .failure #[← exception.toMessageData.toString]
state.tryTacticM goalId $ Tactic.evalAssign expr
-- Specialized Tactics
@ -475,13 +434,13 @@ protected def GoalState.tryMotivatedApply (state: GoalState) (goalId: Nat) (recu
let recursor ← match (← Compile.parseTermM recursor) with
| .ok syn => pure syn
| .error error => return .parseError error
state.execute goalId (tacticM := Tactic.motivatedApply recursor)
state.tryTacticM goalId (tacticM := Tactic.motivatedApply recursor)
protected def GoalState.tryNoConfuse (state: GoalState) (goalId: Nat) (eq: String):
Elab.TermElabM TacticResult := do
state.restoreElabM
let eq ← match (← Compile.parseTermM eq) with
| .ok syn => pure syn
| .error error => return .parseError error
state.execute goalId (tacticM := Tactic.noConfuse eq)
state.tryTacticM goalId (tacticM := Tactic.noConfuse eq)
end Pantograph

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@ -1,3 +1,4 @@
import Pantograph.Condensed
import Pantograph.Environment
import Pantograph.Goal
import Pantograph.Protocol
@ -38,13 +39,10 @@ open Lean
namespace Pantograph
def defaultTermElabMContext: Elab.Term.Context := {
errToSorry := false
}
def runMetaM { α } (metaM: MetaM α): CoreM α :=
metaM.run'
def runTermElabM { α } (termElabM: Elab.TermElabM α): CoreM α :=
termElabM.run' (ctx := defaultTermElabMContext) |>.run'
termElabM.run' (ctx := Condensed.elabContext) |>.run'
def errorI (type desc: String): Protocol.InteractionError := { error := type, desc := desc }
@ -78,26 +76,12 @@ def createCoreState (imports: Array String): IO Core.State := do
(trustLevel := 1)
return { env := env }
@[export pantograph_create_meta_context]
def createMetaContext: IO Lean.Meta.Context := do
return {}
@[export pantograph_env_catalog_m]
def envCatalog: CoreM Protocol.EnvCatalogResult :=
Environment.catalog ({}: Protocol.EnvCatalog)
@[export pantograph_env_inspect_m]
def envInspect (name: String) (value: Bool) (dependency: Bool) (options: @&Protocol.Options):
CoreM (Protocol.CR Protocol.EnvInspectResult) :=
Environment.inspect ({
name, value? := .some value, dependency?:= .some dependency
}: Protocol.EnvInspect) options
@[export pantograph_env_add_m]
def envAdd (name: String) (type: String) (value: String) (isTheorem: Bool):
CoreM (Protocol.CR Protocol.EnvAddResult) :=
Environment.addDecl { name, type, value, isTheorem }
@[export pantograph_parse_elab_type_m]
def parseElabType (type: String): Elab.TermElabM (Protocol.CR Expr) := do
let env ← MonadEnv.getEnv
let syn ← match parseTerm env type with
@ -108,6 +92,7 @@ def parseElabType (type: String): Elab.TermElabM (Protocol.CR Expr) := do
| .ok expr => return .ok (← instantiateMVars expr)
/-- This must be a TermElabM since the parsed expr contains extra information -/
@[export pantograph_parse_elab_expr_m]
def parseElabExpr (expr: String) (expectedType?: Option String := .none): Elab.TermElabM (Protocol.CR Expr) := do
let env ← MonadEnv.getEnv
let expectedType? ← match ← expectedType?.mapM parseElabType with
@ -169,9 +154,6 @@ def goalPrint (state: GoalState) (options: @&Protocol.Options): CoreM Protocol.G
state.withParentContext do
serializeExpression options (← instantiateAll expr)),
}
@[export pantograph_goal_diag_m]
def goalDiag (state: GoalState) (diagOptions: Protocol.GoalDiag) : CoreM String :=
runMetaM $ state.diag diagOptions
@[export pantograph_goal_tactic_m]
def goalTactic (state: GoalState) (goalId: Nat) (tactic: String): CoreM TacticResult :=
@ -186,7 +168,7 @@ protected def GoalState.tryHave (state: GoalState) (goalId: Nat) (binderName: St
| .error error => return .parseError error
runTermElabM do
state.restoreElabM
state.execute goalId (Tactic.«have» binderName.toName type)
state.tryTacticM goalId (Tactic.«have» binderName.toName type)
@[export pantograph_goal_evaluate_m]
protected def GoalState.tryEvaluate (state: GoalState) (goalId: Nat) (binderName: String) (expr: String): CoreM TacticResult := do
let expr ← match (← Compile.parseTermM expr) with
@ -194,7 +176,7 @@ protected def GoalState.tryEvaluate (state: GoalState) (goalId: Nat) (binderName
| .error error => return .parseError error
runTermElabM do
state.restoreElabM
state.execute goalId (Tactic.evaluate binderName.toName expr)
state.tryTacticM goalId (Tactic.evaluate binderName.toName expr)
@[export pantograph_goal_let_m]
def goalLet (state: GoalState) (goalId: Nat) (binderName: String) (type: String): CoreM TacticResult :=
runTermElabM <| state.tryLet goalId binderName type
@ -217,20 +199,4 @@ def goalMotivatedApply (state: GoalState) (goalId: Nat) (recursor: String): Core
def goalNoConfuse (state: GoalState) (goalId: Nat) (eq: String): CoreM TacticResult :=
runTermElabM <| state.tryNoConfuse goalId eq
inductive SyntheticTactic where
| congruenceArg
| congruenceFun
| congruence
/-- Executes a synthetic tactic which has no arguments -/
@[export pantograph_goal_synthetic_tactic_m]
def goalSyntheticTactic (state: GoalState) (goalId: Nat) (case: SyntheticTactic): CoreM TacticResult :=
runTermElabM do
state.restoreElabM
state.execute goalId $ match case with
| .congruenceArg => Tactic.congruenceArg
| .congruenceFun => Tactic.congruenceFun
| .congruence => Tactic.congruence
end Pantograph

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@ -168,15 +168,12 @@ partial def serializeExpressionSexp (expr: Expr) (sanitize: Bool := true): MetaM
-- NOTE: Equivalent to expr itself, but mdata influences the prettyprinter
-- It may become necessary to incorporate the metadata.
self inner
| .proj typeName idx inner => do
| .proj _ _ _ => do
let env ← getEnv
let ctor := getStructureCtor env typeName
let fieldName := getStructureFields env typeName |>.get! idx
let projectorName := getProjFnForField? env typeName fieldName |>.get!
let autos := String.intercalate " " (List.replicate ctor.numParams "_")
let inner ← self inner
pure s!"((:c {projectorName}) {autos} {inner})"
let projApp := exprProjToApp env e
let autos := String.intercalate " " (List.replicate projApp.numParams "_")
let inner ← self projApp.inner
pure s!"((:c {projApp.projector}) {autos} {inner})"
-- Elides all unhygenic names
binderInfoSexp : Lean.BinderInfo → String
| .default => ""
@ -201,54 +198,6 @@ def serializeExpression (options: @&Protocol.Options) (e: Expr): MetaM Protocol.
dependentMVars?,
}
@[export pantograph_to_condensed_goal]
def toCondensedGoal (mvarId: MVarId): MetaM Condensed.Goal := do
let options: Protocol.Options := {}
let ppAuxDecls := options.printAuxDecls
let ppImplDetailHyps := options.printImplementationDetailHyps
let mvarDecl ← mvarId.getDecl
let lctx := mvarDecl.lctx
let lctx := lctx.sanitizeNames.run' { options := (← getOptions) }
Meta.withLCtx lctx mvarDecl.localInstances do
let ppVar (localDecl : LocalDecl) : MetaM Condensed.LocalDecl := do
match localDecl with
| .cdecl _ fvarId userName type _ _ =>
let type ← instantiate type
return { fvarId, userName, type }
| .ldecl _ fvarId userName type value _ _ => do
let userName := userName.simpMacroScopes
let type ← instantiate type
let value ← instantiate value
return { fvarId, userName, type, value? := .some value }
let vars ← lctx.foldlM (init := []) fun acc (localDecl : LocalDecl) => do
let skip := !ppAuxDecls && localDecl.isAuxDecl ||
!ppImplDetailHyps && localDecl.isImplementationDetail
if skip then
return acc
else
let var ← ppVar localDecl
return var::acc
return {
mvarId,
userName := mvarDecl.userName,
context := vars.reverse.toArray,
target := ← instantiate mvarDecl.type
}
where
instantiate := instantiateAll
@[export pantograph_goal_state_to_condensed]
protected def GoalState.toCondensed (state: GoalState):
CoreM (Array Condensed.Goal):= do
let metaM := do
let goals := state.goals.toArray
goals.mapM fun goal => do
match state.mctx.findDecl? goal with
| .some _ =>
let serializedGoal ← toCondensedGoal goal
pure serializedGoal
| .none => throwError s!"Metavariable does not exist in context {goal.name}"
metaM.run' (s := state.savedState.term.meta.meta)
/-- Adapted from ppGoal -/
def serializeGoal (options: @&Protocol.Options) (goal: MVarId) (mvarDecl: MetavarDecl) (parentDecl?: Option MetavarDecl := .none)
@ -337,7 +286,8 @@ protected def GoalState.serializeGoals
| .none => throwError s!"Metavariable does not exist in context {goal.name}"
/-- Print the metavariables in a readable format -/
protected def GoalState.diag (goalState: GoalState) (options: Protocol.GoalDiag := {}): MetaM String := do
@[export pantograph_goal_state_diag_m]
protected def GoalState.diag (goalState: GoalState) (parent?: Option GoalState := .none) (options: Protocol.GoalDiag := {}): MetaM String := do
goalState.restoreMetaM
let savedState := goalState.savedState
let goals := savedState.tactic.goals
@ -356,7 +306,7 @@ protected def GoalState.diag (goalState: GoalState) (options: Protocol.GoalDiag
let resultOthers ← mctx.decls.toList.filter (λ (mvarId, _) =>
!(goals.contains mvarId || mvarId == root) && options.printAll)
|>.mapM (fun (mvarId, decl) => do
let pref := if goalState.newMVars.contains mvarId then "~" else " "
let pref := if parentHasMVar mvarId then " " else "~"
printMVar pref mvarId decl
)
pure $ result ++ "\n" ++ (resultGoals.map (· ++ "\n") |> String.join) ++ (resultOthers.map (· ++ "\n") |> String.join)
@ -396,5 +346,6 @@ protected def GoalState.diag (goalState: GoalState) (options: Protocol.GoalDiag
userNameToString : Name → String
| .anonymous => ""
| other => s!"[{other}]"
parentHasMVar (mvarId: MVarId): Bool := parent?.map (λ state => state.mctx.decls.contains mvarId) |>.getD true
end Pantograph

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@ -1,3 +1,4 @@
import Pantograph.Tactic.Assign
import Pantograph.Tactic.Congruence
import Pantograph.Tactic.MotivatedApply
import Pantograph.Tactic.NoConfuse

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@ -0,0 +1,35 @@
import Lean
open Lean
namespace Pantograph.Tactic
private def newMVarSet (mctxOld: @&MetavarContext) (mctxNew: @&MetavarContext): SSet MVarId :=
mctxNew.decls.foldl (fun acc mvarId mvarDecl =>
if let .some prevMVarDecl := mctxOld.decls.find? mvarId then
assert! prevMVarDecl.type == mvarDecl.type
acc
else
acc.insert mvarId
) SSet.empty
def assign (goal: MVarId) (expr: Expr): MetaM (List MVarId) := do
goal.checkNotAssigned `Pantograph.Tactic.assign
-- This run of the unifier is critical in resolving mvars in passing
let exprType ← Meta.inferType expr
let goalType ← goal.getType
unless ← Meta.isDefEq goalType exprType do
throwError s!"{← Meta.ppExpr expr} : {← Meta.ppExpr exprType} ≠ {← Meta.ppExpr goalType}"
let nextGoals ← Meta.getMVars expr
goal.assign expr
nextGoals.toList.filterM (not <$> ·.isAssigned)
def evalAssign : Elab.Tactic.Tactic := fun stx => Elab.Tactic.withMainContext do
let goalType ← Elab.Tactic.getMainTarget
let expr ← Elab.Term.elabTermAndSynthesize (stx := stx) (expectedType? := .some goalType)
let nextGoals ← assign (← Elab.Tactic.getMainGoal) expr
Elab.Tactic.setGoals nextGoals
end Pantograph.Tactic

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@ -88,9 +88,9 @@ def runCoreMSeq (env: Environment) (coreM: CoreM LSpec.TestSeq) (options: Array
def runMetaMSeq (env: Environment) (metaM: MetaM LSpec.TestSeq): IO LSpec.TestSeq :=
runCoreMSeq env metaM.run'
def runTermElabMInMeta { α } (termElabM: Lean.Elab.TermElabM α): Lean.MetaM α :=
termElabM.run' (ctx := Pantograph.defaultTermElabMContext)
termElabM.run' (ctx := Condensed.elabContext)
def runTermElabMSeq (env: Environment) (termElabM: Elab.TermElabM LSpec.TestSeq): IO LSpec.TestSeq :=
runMetaMSeq env $ termElabM.run' (ctx := Pantograph.defaultTermElabMContext)
runMetaMSeq env $ termElabM.run' (ctx := Condensed.elabContext)
def exprToStr (e: Expr): Lean.MetaM String := toString <$> Meta.ppExpr e

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@ -67,7 +67,7 @@ def proofRunner (env: Lean.Environment) (tests: TestM Unit): IO LSpec.TestSeq :=
let termElabM := tests.run LSpec.TestSeq.done |>.run {} -- with default options
let coreContext: Lean.Core.Context ← createCoreContext #[]
let metaM := termElabM.run' (ctx := defaultTermElabMContext)
let metaM := termElabM.run' (ctx := Condensed.elabContext)
let coreM := metaM.run'
match ← (coreM.run' coreContext { env := env }).toBaseIO with
| .error exception =>
@ -198,10 +198,10 @@ def test_proposition_generation: TestM Unit := do
addTest $ assertUnreachable $ other.toString
return ()
addTest $ LSpec.check ":= λ (x: Nat), _" ((← state2.serializeGoals (options := ← read)).map (·.target.pp?) =
#[.some "Nat → Prop", .some "∀ (x : Nat), ?m.29 x"])
#[.some "∀ (x : Nat), ?m.29 x"])
addTest $ LSpec.test "(2 root)" state2.rootExpr?.isNone
let state3 ← match ← state2.tryAssign (goalId := 1) (expr := "fun x => Eq.refl x") with
let state3 ← match ← state2.tryAssign (goalId := 0) (expr := "fun x => Eq.refl x") with
| .success state => pure state
| other => do
addTest $ assertUnreachable $ other.toString

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@ -76,7 +76,7 @@ def proofRunner (env: Lean.Environment) (tests: TestM Unit): IO LSpec.TestSeq :=
let termElabM := tests.run LSpec.TestSeq.done |>.run {} -- with default options
let coreContext: Lean.Core.Context ← createCoreContext #[]
let metaM := termElabM.run' (ctx := defaultTermElabMContext)
let metaM := termElabM.run' (ctx := Condensed.elabContext)
let coreM := metaM.run'
match ← (coreM.run' coreContext { env := env }).toBaseIO with
| .error exception =>

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@ -64,7 +64,7 @@ def test_sexp_of_elab (env: Environment): IO LSpec.TestSeq := do
| .ok expr => pure expr
| .error e => return elabFailure e
return LSpec.check source ((← serializeExpressionSexp expr) = target)
let metaM := (Elab.Term.withLevelNames levels termElabM).run' (ctx := defaultTermElabMContext)
let metaM := (Elab.Term.withLevelNames levels termElabM).run' (ctx := Condensed.elabContext)
return LSpec.TestSeq.append suites (← runMetaMSeq env metaM))
LSpec.TestSeq.done
@ -85,7 +85,7 @@ def test_sexp_of_expr (env: Environment): IO LSpec.TestSeq := do
let testCaseName := target.take 10
let test := LSpec.check testCaseName ((← serializeExpressionSexp expr) = target)
return LSpec.TestSeq.append suites test) LSpec.TestSeq.done
runMetaMSeq env $ termElabM.run' (ctx := defaultTermElabMContext)
runMetaMSeq env $ termElabM.run' (ctx := Condensed.elabContext)
-- Instance parsing
def test_instance (env: Environment): IO LSpec.TestSeq :=

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@ -63,6 +63,7 @@
packages = {
inherit (leanPkgs) lean lean-all;
inherit (project) sharedLib executable;
inherit project leanPkgs;
default = project.executable;
};
checks = {