Pantograph/Test/Common.lean

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import Pantograph.Goal
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import Pantograph.Library
import Pantograph.Protocol
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import Pantograph.Condensed
import Lean
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import LSpec
open Lean
namespace Pantograph
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deriving instance Repr for Expr
-- Use strict equality check for expressions
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instance : BEq Expr := ⟨Expr.equal⟩
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def uniq (n: Nat): Name := .num (.str .anonymous "_uniq") n
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-- Auxiliary functions
namespace Protocol
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def Goal.devolatilizeVars (goal: Goal): Goal :=
{
goal with
vars := goal.vars.map removeInternalAux,
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}
where removeInternalAux (v: Variable): Variable :=
{
v with
name := ""
}
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/-- Set internal names to "" -/
def Goal.devolatilize (goal: Goal): Goal :=
{
goal.devolatilizeVars with
name := "",
}
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deriving instance DecidableEq, Repr for Name
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deriving instance DecidableEq, Repr for Expression
deriving instance DecidableEq, Repr for Variable
deriving instance DecidableEq, Repr for Goal
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deriving instance DecidableEq, Repr for ExprEchoResult
deriving instance DecidableEq, Repr for InteractionError
deriving instance DecidableEq, Repr for Option
end Protocol
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namespace Condensed
deriving instance BEq, Repr for LocalDecl
deriving instance BEq, Repr for Goal
protected def LocalDecl.devolatilize (decl: LocalDecl): LocalDecl :=
{
decl with fvarId := { name := .anonymous }
}
protected def Goal.devolatilize (goal: Goal): Goal :=
{
goal with
mvarId := { name := .anonymous },
context := goal.context.map LocalDecl.devolatilize
}
end Condensed
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def TacticResult.toString : TacticResult → String
| .success state => s!".success ({state.goals.length} goals)"
| .failure messages =>
let messages := "\n".intercalate messages.toList
s!".failure {messages}"
| .parseError error => s!".parseError {error}"
| .indexError index => s!".indexError {index}"
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| .invalidAction error => s!".invalidAction {error}"
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namespace Test
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def expectationFailure (desc: String) (error: String): LSpec.TestSeq := LSpec.test desc (LSpec.ExpectationFailure "ok _" error)
def assertUnreachable (message: String): LSpec.TestSeq := LSpec.check message false
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def parseFailure (error: String) := expectationFailure "parse" error
def elabFailure (error: String) := expectationFailure "elab" error
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def runCoreMSeq (env: Environment) (coreM: CoreM LSpec.TestSeq) (options: Array String := #[]): IO LSpec.TestSeq := do
let coreContext: Core.Context ← createCoreContext options
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match ← (coreM.run' coreContext { env := env }).toBaseIO with
| .error exception =>
return LSpec.test "Exception" (s!"internal exception #{← exception.toMessageData.toString}" = "")
| .ok a => return a
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 :=
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termElabM.run' (ctx := Condensed.elabContext)
def runTermElabMSeq (env: Environment) (termElabM: Elab.TermElabM LSpec.TestSeq): IO LSpec.TestSeq :=
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runMetaMSeq env $ termElabM.run' (ctx := Condensed.elabContext)
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def exprToStr (e: Expr): Lean.MetaM String := toString <$> Meta.ppExpr e
def parseSentence (s: String): Elab.TermElabM Expr := do
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let recursor ← match Parser.runParserCategory
(env := ← MonadEnv.getEnv)
(catName := `term)
(input := s)
(fileName := filename) with
| .ok syn => pure syn
| .error error => throwError "Failed to parse: {error}"
Elab.Term.elabTerm (stx := recursor) .none
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def runTacticOnMVar (tacticM: Elab.Tactic.TacticM Unit) (goal: MVarId): Elab.TermElabM (List MVarId) := do
let (_, newGoals) ← tacticM { elaborator := .anonymous } |>.run { goals := [goal] }
return newGoals.goals
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def mvarUserNameAndType (mvarId: MVarId): MetaM (Name × String) := do
let name := (← mvarId.getDecl).userName
let t ← exprToStr (← mvarId.getType)
return (name, t)
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-- Monadic testing
abbrev TestT := StateT LSpec.TestSeq
def addTest [Monad m] (test: LSpec.TestSeq): TestT m Unit := do
set $ (← get) ++ test
def runTest [Monad m] (t: TestT m Unit): m LSpec.TestSeq :=
Prod.snd <$> t.run LSpec.TestSeq.done
def runTestTermElabM (env: Environment) (t: TestT Elab.TermElabM Unit):
IO LSpec.TestSeq :=
runTermElabMSeq env $ runTest t
def cdeclOf (userName: Name) (type: Expr): Condensed.LocalDecl :=
{ userName, type }
def buildGoal (nameType: List (String × String)) (target: String) (userName?: Option String := .none):
Protocol.Goal :=
{
userName?,
target := { pp? := .some target},
vars := (nameType.map fun x => ({
userName := x.fst,
type? := .some { pp? := .some x.snd },
isInaccessible? := .some false
})).toArray
}
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end Test
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end Pantograph