Typechecked has well formed type
Cedar.Thm.typechecked_has_well_formed_type
Plain-language statement
The result of typeOf has a well-formed type.
Exact Lean statement
theorem typechecked_has_well_formed_type
{e : Expr}
{c₁ c₂ : Capabilities}
{env : TypeEnv}
{tx : TypedExpr}
(hwf : env.WellFormed)
(hty : typeOf e c₁ env = .ok (tx, c₂)) :
tx.typeOf.WellFormed envFormal artifact
Lean source
theorem typechecked_has_well_formed_type {e : Expr} {c₁ c₂ : Capabilities} {env : TypeEnv} {tx : TypedExpr} (hwf : env.WellFormed) (hty : typeOf e c₁ env = .ok (tx, c₂)) : tx.typeOf.WellFormed env:= by have : CedarType.WellFormed env tx.liftBoolTypes.typeOf := by apply well_typed_implies_wf_type hwf apply typechecked_is_well_typed_after_lifting assumption cases tx all_goals simp only [TypedExpr.liftBoolTypes, TypedExpr.typeOf] at this simp only [TypedExpr.typeOf] apply wf_type_iff_wf_liftBoolTypes.mpr assumption- Project
- Cedar Specification
- License
- Apache-2.0
- Commit
- 3f093947b8ae
- Source
- cedar-lean/Cedar/Thm/WellTyped/Expr/WF.lean:168-186
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Plain-language statement
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Source project: Cedar Specification
Person-level attribution pending.
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Plain-language statement
Inverse of find?_mem_toList, except that this requires wf
Source project: Cedar Specification
Person-level attribution pending.
Find? some iff in values
Cedar.Data.Map.find?_some_iff_in_values
Plain-language statement
The mp direction of this does not need the wf precondition and, in fact, is available separately as find?_some_implies_in_values above
Source project: Cedar Specification
Person-level attribution pending.