66bc9ae177
This PR deprecates `levelZero` in favor of `Level.zero` and `levelOne`
in favor of the new `Level.one`, and updates all usages throughout the
codebase. The `levelZero` alias was previously required for computed
field `data` to work, but this is no longer needed.
🤖 Prepared with Claude Code
70 lines
1.9 KiB
Text
70 lines
1.9 KiB
Text
import Lean
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open Lean
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open Lean.Meta
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universe u
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inductive Vec (α : Type u) : Nat → Type u
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| nil : Vec α 0
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| cons {n} : α → Vec α n → Vec α (n+1)
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set_option trace.Meta.debug true
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def printDef (declName : Name) : MetaM Unit := do
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let cinfo ← getConstInfo declName;
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trace[Meta.debug] cinfo.value!
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instance : Coe Name FVarId where
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coe n := { name := n }
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instance : Coe Name MVarId where
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coe n := { name := n }
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instance : Coe Name LMVarId where
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coe n := { name := n }
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def tst1 : MetaM Unit := do
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let u := mkLevelParam `u
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let v := mkLevelMVar `v
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let m1 ← mkFreshExprMVar (mkSort Level.one)
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withLocalDeclD `α (mkSort u) $ fun α => do
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withLocalDeclD `β (mkSort v) $ fun β => do
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let m2 ← mkFreshExprMVar (← mkArrow α m1)
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withLocalDeclD `a α $ fun a => do
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withLocalDeclD `f (← mkArrow α α) $ fun f => do
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withLetDecl `b α (mkApp f a) $ fun b => do
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let t := mkApp m2 (mkApp f b)
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let e ← mkAuxDefinitionFor `foo1 t
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trace[Meta.debug] e
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printDef `foo1
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set_option pp.mvars false in
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/--
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trace: [Meta.debug] foo1 α f b ?_ ?_
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[Meta.debug] fun α f b _x_1 _x_2 => _x_2 (f b)
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-/
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#guard_msgs in
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#eval tst1
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def tst2 : MetaM Unit := do
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let u := mkLevelParam `u
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withLocalDeclD `α (mkSort (mkLevelSucc u)) $ fun α => do
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withLocalDeclD `v1 (mkApp2 (mkConst `Vec [u]) α (mkNatLit 10)) $ fun v1 =>
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withLetDecl `n (mkConst `Nat) (mkNatLit 10) $ fun n =>
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withLocalDeclD `v2 (mkApp2 (mkConst `Vec [u]) α n) $ fun v2 => do
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let m ← mkFreshExprMVar (← mkArrow (mkApp2 (mkConst `Vec [u]) α (mkNatLit 10)) (mkSort Level.zero))
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withLocalDeclD `p (mkSort Level.zero) $ fun p => do
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let t ← mkEq v1 v2
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let t := mkApp2 (mkConst `And) t (mkApp2 (mkConst `Or) (mkApp m v2) p)
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let e ← mkAuxDefinitionFor `foo2 t
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trace[Meta.debug] e
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printDef `foo2
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set_option pp.mvars false in
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/--
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trace: [Meta.debug] foo2 α v1 v2 p ?_
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[Meta.debug] fun α v1 v2 p _x_1 => v1 = v2 ∧ (_x_1 v2 ∨ p)
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-/
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#guard_msgs in
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#eval tst2
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