mirror of
https://github.com/leanprover/lean4.git
synced 2026-03-17 18:34:06 +00:00
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
115 lines
3.1 KiB
Lean4
115 lines
3.1 KiB
Lean4
import Lean.Expr
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open Lean
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def exprType : Expr := mkSort Level.one
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def biDef := BinderInfo.default
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def exprNat := mkConst `Nat []
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-- Type -> Type
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def TypeArrowType := mkForall `α biDef exprType exprType
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-- Type -> Type
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def TypeArrowType2 := mkForall `β biDef exprType exprType
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-- fun (x : Nat) => x
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def exprT1 := mkLambda `x biDef exprNat (mkBVar 0)
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-- fun (y : Nat) => x
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def exprT2 := mkLambda `y biDef exprNat (mkBVar 0)
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-- fun (x : Nat) => (f x)
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def exprT3 := mkLambda `x biDef exprNat (mkApp (mkConst `f []) (mkBVar 0))
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-- fun (x : Nat) => (f x)
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def exprT4 := mkLambda `x BinderInfo.implicit exprNat (mkApp (mkConst `f []) (mkBVar 0))
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def check (b : Bool) : IO Unit :=
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unless b do throw $ IO.userError "failed"
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def tst1 : IO Unit :=
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do IO.println TypeArrowType;
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IO.println exprT1;
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IO.println exprT2;
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IO.println exprT3;
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IO.println exprT4;
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check (TypeArrowType == TypeArrowType2);
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check (ExprStructEq.mk TypeArrowType != ExprStructEq.mk TypeArrowType2);
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check (!Expr.equal TypeArrowType TypeArrowType2);
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check (exprT1 == exprT2);
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check (ExprStructEq.mk exprT1 != ExprStructEq.mk exprT2);
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check (ExprStructEq.mk exprT1 == ExprStructEq.mk exprT1);
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check (exprT3 == exprT4);
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check (ExprStructEq.mk exprT3 != ExprStructEq.mk exprT4);
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pure ()
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/--
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info: Type -> Type
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fun (x : Nat) => x
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fun (y : Nat) => y
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fun (x : Nat) => f x
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fun {x : Nat} => f x
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-/
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#guard_msgs in
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#eval tst1
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def tst2 : IO Unit :=
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do let m1 : ExprMap Nat := {};
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let m1 := m1.insert exprT1 10;
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check (m1[exprT1]? == some 10);
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check (m1[exprT2]? == some 10);
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check (m1[exprT3]? == none);
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let m1 := m1.insert exprT4 20;
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check (m1[exprT1]? == some 10);
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check (m1[exprT3]? == some 20);
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IO.println m1[exprT1]?;
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pure ()
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/-- info: (some 10) -/
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#guard_msgs in
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#eval tst2
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def tst3 : IO Unit :=
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do let m1 : ExprStructMap Nat := {};
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let m1 := m1.insert exprT1 10;
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check (m1.get? exprT1 == some 10);
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check (m1.get? exprT2 == none);
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check (m1.get? exprT3 == none);
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let m1 := m1.insert exprT4 20;
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check (m1.get? exprT1 == some 10);
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check (m1.get? exprT4 == some 20);
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check (m1.get? exprT3 == none);
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IO.println (m1.get? exprT1);
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pure ()
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/-- info: (some 10) -/
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#guard_msgs in
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#eval tst3
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def tst4 : IO Unit :=
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do let m1 : PersistentExprMap Nat := {};
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let m1 := m1.insert exprT1 10;
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check (m1.find? exprT1 == some 10);
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check (m1.find? exprT2 == some 10);
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check (m1.find? exprT3 == none);
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let m1 := m1.insert exprT4 20;
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check (m1.find? exprT1 == some 10);
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check (m1.find? exprT3 == some 20);
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IO.println (m1.find? exprT1);
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pure ()
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/-- info: (some 10) -/
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#guard_msgs in
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#eval tst4
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def tst5 : IO Unit :=
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do let m1 : PersistentExprStructMap Nat := {};
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let m1 := m1.insert exprT1 10;
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check (m1.find? exprT1 == some 10);
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check (m1.find? exprT2 == none);
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check (m1.find? exprT3 == none);
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let m1 := m1.insert exprT4 20;
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check (m1.find? exprT1 == some 10);
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check (m1.find? exprT4 == some 20);
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check (m1.find? exprT3 == none);
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IO.println (m1.find? exprT1);
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pure ()
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/-- info: (some 10) -/
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#guard_msgs in
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#eval tst5
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