structure Lean.Elab.Command.Scope : Type

• header : String
• opts : Lean.Options
• currNamespace : Lean.Name
• openDecls : List Lean.OpenDecl
• levelNames : List Lean.Name

• section variables

  varDecls : Array (Lean.TSyntax (Lean.Name.mkStr4 "Lean" "Parser" "Term" "bracketedBinder"))

• Globally unique internal identifiers for the varDecls

  varUIds : Array Lean.Name

• noncomputable sections automatically add the noncomputable modifier to any declaration we cannot generate code for.

  isNoncomputable : Bool

instance Lean.Elab.Command.instInhabitedScope : Inhabited Lean.Elab.Command.Scope

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structure Lean.Elab.Command.State : Type

• env : Lean.Environment
• messages : Lean.MessageLog
• scopes : List Lean.Elab.Command.Scope
• nextMacroScope : Nat
• maxRecDepth : Nat
• nextInstIdx : Nat
• ngen : Lean.NameGenerator
• infoState : Lean.Elab.InfoState
• traceState : Lean.TraceState

instance Lean.Elab.Command.instInhabitedState : Inhabited Lean.Elab.Command.State

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structure Lean.Elab.Command.Context : Type

• fileName : String
• fileMap : Lean.FileMap
• currRecDepth : Nat
• cmdPos : String.Pos
• macroStack : Lean.Elab.MacroStack
• currMacroScope : Lean.MacroScope
• ref : Lean.Syntax
• tacticCache? : Option (IO.Ref Lean.Elab.Tactic.Cache)

@[inline]

abbrev Lean.Elab.Command.CommandElabCoreM (ε : Type) (α : Type) : Type

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• Lean.Elab.Command.CommandElabCoreM ε = ReaderT Lean.Elab.Command.Context (StateRefT' IO.RealWorld Lean.Elab.Command.State (EIO ε))

@[inline]

abbrev Lean.Elab.Command.CommandElabM (α : Type) : Type

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• Lean.Elab.Command.CommandElabM = Lean.Elab.Command.CommandElabCoreM Lean.Exception

@[inline]

abbrev Lean.Elab.Command.CommandElab : Type

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• Lean.Elab.Command.CommandElab = (Lean.Syntax → Lean.Elab.Command.CommandElabM Unit)

@[inline]

abbrev Lean.Elab.Command.Linter : Type

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• Lean.Linter = (Lean.Syntax → Lean.Elab.Command.CommandElabM Unit)

instance Lean.Elab.Command.instMonadCommandElabM : Monad Lean.Elab.Command.CommandElabM

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• Lean.Elab.Command.instMonadCommandElabM = let i := inferInstanceAs (Monad Lean.Elab.Command.CommandElabM); Monad.mk

def Lean.Elab.Command.mkState (env : Lean.Environment) (messages : optParam Lean.MessageLog { msgs := { root := Lean.PersistentArrayNode.node (Array.mkEmpty (USize.toNat Lean.PersistentArray.branching)), tail := Array.mkEmpty (USize.toNat Lean.PersistentArray.branching), size := 0, shift := Lean.PersistentArray.initShift, tailOff := 0 } }) (opts : optParam Lean.Options { entries := [] }) : Lean.Elab.Command.State

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opaque Lean.Elab.Command.lintersRef : IO.Ref (Array Lean.Linter)

def Lean.Elab.Command.addLinter (l : Lean.Linter) : IO Unit

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• Lean.addLinter l = do let ls ← ST.Ref.get Lean.Elab.Command.lintersRef ST.Ref.set Lean.Elab.Command.lintersRef (Array.push ls l)

instance Lean.Elab.Command.instMonadInfoTreeCommandElabM : Lean.Elab.MonadInfoTree Lean.Elab.Command.CommandElabM

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instance Lean.Elab.Command.instMonadEnvCommandElabM : Lean.MonadEnv Lean.Elab.Command.CommandElabM

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instance Lean.Elab.Command.instMonadOptionsCommandElabM : Lean.MonadOptions Lean.Elab.Command.CommandElabM

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• Lean.Elab.Command.instMonadOptionsCommandElabM = { getOptions := do let a ← get pure (List.head! a.scopes).opts }

def Lean.Elab.Command.getRef : Lean.Elab.Command.CommandElabM Lean.Syntax

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• Lean.Elab.Command.getRef = do let a ← read pure a.ref

instance Lean.Elab.Command.instAddMessageContextCommandElabM : Lean.AddMessageContext Lean.Elab.Command.CommandElabM

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• Lean.Elab.Command.instAddMessageContextCommandElabM = { addMessageContext := Lean.addMessageContextPartial }

instance Lean.Elab.Command.instMonadRefCommandElabM : Lean.MonadRef Lean.Elab.Command.CommandElabM

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instance Lean.Elab.Command.instMonadTraceCommandElabM : Lean.MonadTrace Lean.Elab.Command.CommandElabM

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instance Lean.Elab.Command.instAddErrorMessageContextCommandElabM : Lean.AddErrorMessageContext Lean.Elab.Command.CommandElabM

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def Lean.Elab.Command.mkMessageAux (ctx : Lean.Elab.Command.Context) (ref : Lean.Syntax) (msgData : Lean.MessageData) (severity : Lean.MessageSeverity) : Lean.Message

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def Lean.Elab.Command.liftCoreM {α : Type} (x : Lean.CoreM α) : Lean.Elab.Command.CommandElabM α

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@[inline]

def Lean.Elab.Command.liftEIO {α : Type} (x : EIO Lean.Exception α) : Lean.Elab.Command.CommandElabM α

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• Lean.Elab.Command.liftEIO x = liftM x

@[inline]

def Lean.Elab.Command.liftIO {α : Type} (x : IO α) : Lean.Elab.Command.CommandElabM α

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instance Lean.Elab.Command.instMonadLiftTIOCommandElabM : MonadLiftT IO Lean.Elab.Command.CommandElabM

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• Lean.Elab.Command.instMonadLiftTIOCommandElabM = { monadLift := fun {α} => Lean.Elab.Command.liftIO }

def Lean.Elab.Command.getScope : Lean.Elab.Command.CommandElabM Lean.Elab.Command.Scope

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• Lean.Elab.Command.getScope = do let a ← get pure (List.head! a.scopes)

instance Lean.Elab.Command.instMonadResolveNameCommandElabM : Lean.MonadResolveName Lean.Elab.Command.CommandElabM

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instance Lean.Elab.Command.instMonadLogCommandElabM : Lean.MonadLog Lean.Elab.Command.CommandElabM

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def Lean.Elab.Command.runLinters (stx : Lean.Syntax) : Lean.Elab.Command.CommandElabM Unit

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def Lean.Elab.Command.getCurrMacroScope : Lean.Elab.Command.CommandElabM Nat

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• Lean.Elab.Command.getCurrMacroScope = do let a ← read pure a.currMacroScope

def Lean.Elab.Command.getMainModule : Lean.Elab.Command.CommandElabM Lean.Name

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• Lean.Elab.Command.getMainModule = do let a ← Lean.getEnv pure (Lean.Environment.mainModule a)

def Lean.Elab.Command.withFreshMacroScope {α : Type} (x : Lean.Elab.Command.CommandElabM α) : Lean.Elab.Command.CommandElabM α

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instance Lean.Elab.Command.instMonadQuotationCommandElabM : Lean.MonadQuotation Lean.Elab.Command.CommandElabM

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• Lean.Elab.Command.instMonadQuotationCommandElabM = Lean.MonadQuotation.mk Lean.Elab.Command.getCurrMacroScope Lean.Elab.Command.getMainModule fun {α} => Lean.Elab.Command.withFreshMacroScope

unsafe def Lean.Elab.Command.mkCommandElabAttributeUnsafe : IO (Lean.KeyedDeclsAttribute Lean.Elab.Command.CommandElab)

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@[implementedBy Lean.Elab.Command.mkCommandElabAttributeUnsafe]

opaque Lean.Elab.Command.mkCommandElabAttribute : IO (Lean.KeyedDeclsAttribute Lean.Elab.Command.CommandElab)

opaque Lean.Elab.Command.commandElabAttribute : Lean.KeyedDeclsAttribute Lean.Elab.Command.CommandElab

def Lean.Elab.Command.withMacroExpansion {α : Type} (beforeStx : Lean.Syntax) (afterStx : Lean.Syntax) (x : Lean.Elab.Command.CommandElabM α) : Lean.Elab.Command.CommandElabM α

Elaborate x with stx on the macro stack

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instance Lean.Elab.Command.instMonadMacroAdapterCommandElabM : Lean.Elab.MonadMacroAdapter Lean.Elab.Command.CommandElabM

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instance Lean.Elab.Command.instMonadRecDepthCommandElabM : Lean.MonadRecDepth Lean.Elab.Command.CommandElabM

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opaque Lean.Elab.Command.showPartialSyntaxErrors : Lean.Option Bool

partial def Lean.Elab.Command.elabCommand (stx : Lean.Syntax) : Lean.Elab.Command.CommandElabM Unit

def Lean.Elab.Command.elabCommandTopLevel (stx : Lean.Syntax) : Lean.Elab.Command.CommandElabM Unit

elabCommand wrapper that should be used for the initial invocation, not for recursive calls after macro expansion etc.

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def Lean.Elab.Command.adaptExpander (exp : Lean.Syntax → Lean.Elab.Command.CommandElabM Lean.Syntax) : Lean.Elab.Command.CommandElab

Adapt a syntax transformation to a regular, command-producing elaborator.

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• Lean.Elab.Command.adaptExpander exp stx = do let stx' ← exp stx Lean.Elab.Command.withMacroExpansion stx stx' (Lean.Elab.Command.elabCommand stx')

instance Lean.Elab.Command.instInhabitedCommandElabM {α : Type} : Inhabited (Lean.Elab.Command.CommandElabM α)

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• Lean.Elab.Command.instInhabitedCommandElabM = { default := throw default }

def Lean.Elab.Command.getBracketedBinderIds : Lean.Syntax → Array Lean.Name

Return identifier names in the given bracketed binder.

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def Lean.Elab.Command.liftTermElabM {α : Type} (x : Lean.Elab.TermElabM α) : Lean.Elab.Command.CommandElabM α

Lift the TermElabM monadic action x into a CommandElabM monadic action.

Note that x is executed with an empty message log. Thus, x cannot modify/view messages produced by previous commands.

If you need to access the free variables corresponding to the ones declared using the variable command, consider using runTermElabM.

Recall that TermElabM actions can automatically lift MetaM and CoreM actions. Example:

import Lean

open Lean Elab Command Meta

def printExpr (e : Expr) : MetaM Unit := do
  IO.println s!"{← ppExpr e} : {← ppExpr (← inferType e)}"

#eval
  liftTermElabM do
    printExpr (mkConst ``Nat)

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def Lean.Elab.Command.runTermElabM {α : Type} (elabFn : Array Lean.Expr → Lean.Elab.TermElabM α) : Lean.Elab.Command.CommandElabM α

Execute the monadic action elabFn xs as a CommandElabM monadic action, where xs are free variables corresponding to all active scoped variables declared using the variable command.

This method is similar to liftTermElabM, but it elaborates all scoped variables declared using the variable command.

Example:

import Lean

open Lean Elab Command Meta

variable {α : Type u} {f : α → α}
variable (n : Nat)

#eval
  runTermElabM fun xs => do
    for x in xs do
      IO.println s!"{← ppExpr x} : {← ppExpr (← inferType x)}"

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@[inline]

def Lean.Elab.Command.catchExceptions (x : Lean.Elab.Command.CommandElabM Unit) : Lean.Elab.Command.CommandElabCoreM Empty Unit

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• Lean.Elab.Command.catchExceptions x ctx ref = EIO.catchExceptions (Lean.Elab.withLogging x ctx ref) fun x => pure ()

def Lean.Elab.Command.getScopes : Lean.Elab.Command.CommandElabM (List Lean.Elab.Command.Scope)

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• Lean.Elab.Command.getScopes = do let a ← get pure a.scopes

def Lean.Elab.Command.modifyScope (f : Lean.Elab.Command.Scope → Lean.Elab.Command.Scope) : Lean.Elab.Command.CommandElabM Unit

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def Lean.Elab.Command.withScope {α : Type} (f : Lean.Elab.Command.Scope → Lean.Elab.Command.Scope) (x : Lean.Elab.Command.CommandElabM α) : Lean.Elab.Command.CommandElabM α

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def Lean.Elab.Command.getLevelNames : Lean.Elab.Command.CommandElabM (List Lean.Name)

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• Lean.Elab.Command.getLevelNames = do let a ← Lean.Elab.Command.getScope pure a.levelNames

def Lean.Elab.Command.addUnivLevel (idStx : Lean.Syntax) : Lean.Elab.Command.CommandElabM Unit

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def Lean.Elab.Command.expandDeclId (declId : Lean.Syntax) (modifiers : Lean.Elab.Modifiers) : Lean.Elab.Command.CommandElabM Lean.Elab.ExpandDeclIdResult

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