30 lines
617 B
Text
30 lines
617 B
Text
import Lean.Meta
|
|
|
|
new_frontend
|
|
|
|
open Lean
|
|
open Lean.Meta
|
|
|
|
def checkM (x : MetaM Bool) : MetaM Unit :=
|
|
unlessM x $ throwError "check failed"
|
|
|
|
def tst1 : MetaM Unit := do
|
|
let nat := mkConst `Nat
|
|
let m1 ← mkFreshExprMVar nat
|
|
let m2 ← mkFreshExprMVar (← mkArrow nat nat)
|
|
withLocalDeclD `x nat fun x => do
|
|
let t := mkApp m2 x
|
|
checkM $ isDefEq t m1
|
|
|
|
def tst2 : MetaM Unit := do
|
|
let nat := mkConst `Nat
|
|
let m1 ← mkFreshExprMVar nat
|
|
let m2 ← mkFreshExprMVar (← mkArrow nat nat)
|
|
withLocalDeclD `x nat fun x => do
|
|
let t := mkApp m2 x
|
|
checkM $ isDefEq m1 t
|
|
|
|
set_option trace.Meta true
|
|
|
|
#eval tst1
|
|
#eval tst2
|