27 lines
656 B
Text
27 lines
656 B
Text
import Lean.Meta
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new_frontend
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open Lean
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open Lean.Meta
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def tst1 : MetaM Unit :=
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withLocalDeclD `y (mkConst `Nat) $ fun y => do
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withLetDecl `x (mkConst `Nat) (mkNatLit 0) $ fun x => do {
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let mvar ← mkFreshExprMVar (mkConst `Nat) MetavarKind.syntheticOpaque;
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trace! `Meta mvar;
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let r ← mkLambdaFVars #[y, x] mvar;
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trace! `Meta r;
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let v := mkApp2 (mkConst `Nat.add) x y;
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assignExprMVar mvar.mvarId! v;
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trace! `Meta mvar;
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trace! `Meta r;
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let mctx ← getMCtx;
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mctx.decls.forM $ fun mvarId mvarDecl => do {
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trace! `Meta ("?" ++ mvarId ++ " : " ++ mvarDecl.type);
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pure ()
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};
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pure ()
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}
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set_option trace.Meta true
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#eval tst1
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