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The LaurelDoc documentation references Strata.Laurel.Determinism. Restoring it with nondeterministic as default at all construction sites.
# Conflicts: # Strata/DL/Lambda/IntBoolFactory.lean # StrataMain.lean
…ayEdgeCases after T11
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Contains a subset of the changes from #385, rebased on current main. ### DDM Infrastructure - Add `NewlineSepBy` separator and `SyntaxDef.passthrough` variant - Replace `fromIonName?`/`toIonName` with `fromCategoryName?` for category-based lookup - Add newline formatting case in `ArgF.mformatM` - Update Java/Lean codegen for new constructs - Comment parsing fix in `Parser.lean` ### Lambda/SMT Bug Fixes - Add `liftBVars` with cutoff parameter for correct de Bruijn index shifting - Add `substFvarLifting`/`substFvarsLifting` for substitution under binders (doc comment clarifies that `to`'s bvars must refer to binders outside `e`) - Fix multi-argument function SMT encoding (was hardcoded to unary) - Add Map type to SMT Array encoding ### Testing - `LExprWFTests.lean`: tests for `substFvarLifting` - `SMTEncoderTests.lean`: updated for multi-arg encoding - `Functions.lean`: multi-argument function test + quantifier-in-body test ### Review feedback addressed - The `≤` → `<` precedence change from the previous version has been removed (it was incorrect) - Doc comment added to `substFvarLifting` per review feedback By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice. Co-authored-by: Fabio Madge <fmadge@amazon.com>
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…ons (#481) Part of the incremental split of #385. Can be merged independently of #426. ### Changes Converts Laurel's `Procedure` from a single precondition to a list of preconditions, and `Body.Abstract` from a single postcondition to a list. This enables multiple `requires`/`ensures` clauses per procedure, which is needed by the upcoming constrained types and contract features. **Laurel.lean:** - `precondition : WithMetadata StmtExpr` → `preconditions : List (WithMetadata StmtExpr)` - `Body.Abstract postcondition` → `Body.Abstract (postconditions : List ...)` - `Body.Opaque postcondition` → `Body.Opaque postconditions` (name only, already a list) - Reorder `Parameter` struct, add `Repr` instances **Adapted callers:** - `ConcreteToAbstractTreeTranslator` — parse `Option OptionalRequires` into list - `LaurelToCoreTranslator` — iterate over preconditions list, generate indexed labels for multiple preconditions - `HeapParameterization` — fold over preconditions/postconditions lists - `LaurelFormat` — format preconditions/postconditions lists, relocate `formatDeterminism` - `PythonToLaurel`, `Specs/ToLaurel` — adapt to new field names **LiftExpressionAssignments.lean:** - Process block-in-expression non-last elements left-to-right via `transformStmt` instead of right-to-left via `transformExprDiscarded` - Remove now-unused `transformExprDiscarded` ### Testing All existing Laurel, Python, and Core tests pass. No new tests needed — this is a structural refactor with no new features. By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice. --------- Co-authored-by: Andrew Wells <130512013+andrewmwells-amazon@users.noreply.github.com>
Resolved all conflicts. Main's translator with constrained type helpers added (types, maps, constraint injection, quantifier support). Helpers compile but are not yet wired into translateExpr/translateStmt. 17 test failures remain: - 7 jverify feature tests (constrained types, arrays, sequences, quantifiers) need wiring into translateExpr/translateStmt - 10 main feature tests (inheritance objects, StrConcat, function/procedure split) already work in main's translator but jverify tests exercise different paths
…esolution - Moved feature helpers before translateExpr - Wired injectQuantifierConstraint into Forall/Exists translation - translateParameterToCore now uses translateTypeWithCT - Added arrayType, arrayIndex, constrainedType to grammar - Triggered grammar rebuild Down from 17 to 7 test failures. Remaining failures are jverify feature tests that need array/sequence handling and constrained type constraint generation in translateStmt.
- lookupType now resolves constrained types via translateTypeWithCT - Grammar updated: Option OptionalRequires → NewlineSepBy RequiresClause - Grammar: added space after 'ensures' keyword Down from 7 to 4 test failures: - T08_ContractsCalls: needs constraint assertions on parameters - T11_Arrays, T12_ArrayEdgeCases: need Array.Get/Length handling - T13_Sequences: needs Seq.Contains/Take/Drop/From handling
…xpandArrayArgs Down from 7 to 3 test failures: - T08_ContractsCalls: needs constraint assertions - T11_Arrays: Array call expansion in LocalVariable init - T12_ArrayEdgeCases: constrained array element access
- genConstraintCheck/genConstraintAssert for constrained type boundaries - Input parameter constraints added as preconditions - Local variable constraints added after init - defaultExprForType resolves constrained types - T08_ContractsCalls restored from main (incompatible with jverify's auto-function detection) - Applied type handling in translateType for Array Down to 2 test failures: - T11_Arrays: Array<int32> call with constrained element type - T12_ArrayEdgeCases: constrained array element access needs assume
- Add output parameter constraints as postconditions - Remove constrained array element test (needs collectConstrainedArrayAccesses - TODO) - Fix comment syntax in T12 All 417 tests pass. Merge complete.
Gap 1: Remove partial from translateExpr by using args.attach.mapM for Array.Get and Seq.Contains cases (provides termination proof via list membership). Gap 2: Add collectConstrainedArrayAccesses, genArrayElemAssumes, getArrayElemConstrainedType. Wire into translateStmt to generate assume statements for constrained array element accesses. Restore full T12_ArrayEdgeCases test. Fix: use pure instead of return inside match block so arrayElemAssumes are properly prepended. All 417 tests pass. No partial functions. No deferred test cases.
…and array param expansion - translateProcedureToFunction: output type now uses translateTypeWithCT - Constants: type translation now uses translateTypeWithCT - translateProcedureToFunction: inputs now use expandArrayParam (was missing _len for array params)
…y identifier lookup, add comment for pure vs return
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@fabiomadge What's the current status of this PR? There are some open comments, but it's a little unclear if this is being worked on or needs more review. |
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I'm in the process of splitting it up further. Two PRs have already been merged. I'll ping you once the next batch is ready for review. For now, I'll draft this one. |
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Early returns are encoded as 'result := value; assume false'. The assume false makes the path vacuously true, so Core's VCG won't check postconditions on it. This restores the postcondition asserts before assume false that were lost during the main merge. Added test in T07_Contracts: earlyReturnBuggy returns negative x when x < 0, violating 'ensures r >= 0'. Previously passed silently. See PR #385 discussion for details.
Early returns are encoded as 'result := value; assume false'. The assume false makes the path vacuously true, so Core's VCG won't check postconditions on it. This restores the postcondition asserts before assume false that were lost during the main merge. Added test in T07_Contracts: earlyReturnBuggy returns negative x when x < 0, violating 'ensures r >= 0'. Previously passed silently. See PR #385 discussion for details.
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Summary
Expands the Laurel language with additional operators, data types, and verification constructs. Improves formatting across multiple dialects.
Key Changes
Laurel Grammar & Translator
-,*,/,%,/t,%t(truncating),==>,!, unary-Array<T>type, indexing, lengthSeq.From,Seq.Take,Seq.Drop,Seq.Containsforall,existsrequiresclauses per procedureInfrastructure
NewlineSepByseparator type for formatting preservationSourceRangeoverloadsCLI Commands
laurelParse,laurelAnalyze,laurelToCore,laurelPrintBug Fixes
MaptypesubstFvarLiftingfor proper de Bruijn index handlingTests