Partial evaluate is sound
Cedar.Thm.partial_evaluate_is_sound
Project documentation
The main lemma: Evaluating a residual derived from partially evaluating a well-typed expression is equivalent to that of evaluating the original expression, provided that requests and entities are consistent. The equivalency is defined using Except.toOption.
Exact Lean statement
theorem partial_evaluate_is_sound
{x : Residual}
{req : Request}
{es : Entities}
{preq : PartialRequest}
{pes : PartialEntities}
{env : TypeEnv} :
Residual.WellTyped env x →
InstanceOfWellFormedEnvironment req es env →
RequestAndEntitiesRefine req es preq pes →
(x.evaluate req es).toOption = ((Cedar.TPE.evaluate x preq pes).evaluate req es).toOptionFormal artifact
Lean source
theorem partial_evaluate_is_sound {x : Residual} {req : Request} {es : Entities} {preq : PartialRequest} {pes : PartialEntities} {env : TypeEnv} : Residual.WellTyped env x → InstanceOfWellFormedEnvironment req es env → RequestAndEntitiesRefine req es preq pes → (x.evaluate req es).toOption = ((Cedar.TPE.evaluate x preq pes).evaluate req es).toOption:= by intro h₁ h₂ h₃ induction h₁ case val => exact partial_evaluate_is_sound_val case var => exact partial_evaluate_is_sound_var h₃ case ite x₁ x₂ x₃ hwt _ _ hₜ _ hᵢ₁ hᵢ₂ hᵢ₃ => exact partial_evaluate_is_sound_ite h₂ hwt hₜ hᵢ₁ hᵢ₂ hᵢ₃ case and x₁ x₂ hᵢ₁ hᵢ₂ hᵢ₃ hᵢ₄ hᵢ₅ hᵢ₆ => exact partial_evaluate_is_sound_and h₂ h₃ hᵢ₁ hᵢ₂ hᵢ₃ hᵢ₄ hᵢ₅ hᵢ₆ case or x₁ x₂ hᵢ₁ hᵢ₂ hᵢ₃ hᵢ₄ hᵢ₅ hᵢ₆ => exact partial_evaluate_is_sound_or h₂ h₃ hᵢ₁ hᵢ₂ hᵢ₃ hᵢ₄ hᵢ₅ hᵢ₆ case unaryApp op₁ x₁ ty hᵢ₁ => exact partial_evaluate_is_sound_unary_app h₃ hᵢ₁ case binaryApp op₂ x₁ x₂ ty _ hwt howt hᵢ₁ hᵢ₂ => exact partial_evaluate_is_sound_binary_app h₂ h₃ hwt howt hᵢ₁ hᵢ₂ case hasAttr_entity ety x₁ attr hᵢ₁ => exact partial_evaluate_is_sound_has_attr h₃ hᵢ₁ case hasAttr_record rty x₁ attr hᵢ₁ => exact partial_evaluate_is_sound_has_attr h₃ hᵢ₁ case getAttr_entity ety rty x₁ attr ty hᵢ₁ => exact partial_evaluate_is_sound_get_attr h₃ hᵢ₁ case getAttr_record rty x₁ attr ty hᵢ₁ => exact partial_evaluate_is_sound_get_attr h₃ hᵢ₁ case set ls ty hᵢ₁ => exact partial_evaluate_is_sound_set hᵢ₁ case record rty m hᵢ₁ hᵢ₁ => exact partial_evaluate_is_sound_record hᵢ₁ case call xfn args ty hᵢ₁ => exact partial_evaluate_is_sound_call hᵢ₁ case error ty => exact partial_evaluate_is_sound_error- Project
- Cedar Specification
- License
- Apache-2.0
- Commit
- 3f093947b8ae
- Source
- cedar-lean/Cedar/Thm/TPE/Soundness.lean:63-106
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