v0.15.1

0.15.1

Features

• Manual: added a tutorial on the type checker Snowcat, see #689
• Language manual: add types for the standard operators, see #547
• Type checker: add support for type aliases,
  e.g., @typeAlias FOO = [a: Int, b: Int], see #704
• Manual: updated the HOWTO on type annotations with type aliases

v0.15.0

0.15.0

Features

• Model checker: receiving the types from with the type checker Snowcat, see #668 and #350
• Model checker and type checker: Snowcat is the only way to compute types now
• Type checker: the old Apalache type annotations are no longer supported, see #668
• Type checker: tagging all expressions with the reconstructed types, see #608
• Type checker: handling TLA+ labels like lab("a", "b") :: e, see #653
• Type checker: always treating <<...>> in UNCHANGED <<...>> as a tuple, see #660
• Type checker: handling the general case of EXCEPT, see #617
• Preprocessing: handling the general case of EXCEPT, see #647

Changed

• Preprocessing: massive refactoring of the passes to support types. This may have introduced unexpected bugs.
• Model checker: translation rules for records and functions have been modified, in order to support new types. Bugs to
  be expected.
• Intermediate representation: renamed BmcOper to ApalacheOper. Its operators have the prefix Apalache! now.

Removed

• Unused rewriting rules and FailPredT in the model checker, see #665
• Intermediate representation: removed non-standard operators subsetProper, supset, supseteq, see #615
• Intermediate representation: removed TlaArithOper.{sum,prod}, as they are not standard, see #580
• Intermediate representation: removed TlaOper.chooseIdiom

v0.11.0

0.11.0

Features

• Type checker: supporting TLC operators, see #601

Bug fixes

• Parser: propagating type annotations in INSTANCES, see #592 and #596

Removed

• Type checker: removed Typing.tla, AssumeType, and ##, see #518

v0.10.1

0.10.1

Features

• Support for FunAsSeq conversion in the type checker, see #223
• The parser outputs annotations, see #502

Documentation

• HOWTO on writing type annotations, see #571

Bug fixes

• Fixed name collisions on LOCAL operators and LOCAL INSTANCE, see #576
• Parser: a higher-order operator calling a higher-order operator, see #575
• Type checker: support for recursive functions of multiple arguments, see #582
• Type checker: support for tuple unpacking in recursive functions, see #583

v0.10.0

0.10.0

Features

• integration with Java-like annotations in comments, see #504
• support for Assume(...) in the type checker
• new command-line option for typecheck:
  • enable inference of polymorphic types: --infer-poly
• updates to ADR002 and the manual
• support for parallel assignments <<x', y'>> = <<1, 2>>, see #531
• always sorting declarations with topological sort (changes the order of the operator definitions), see #122

Bugfixes

• Boolean values are now supported in TLC config files, see #512
• Promoting Desugarer to run as the first preprocessing pass, see #531
• Proper error on invalid type annotations, the parser is strengthened with Scalacheck, see #332
• Fixed a parsing bug for strings that contain '-', see #539
• Typechecking quantifiers over tuples, see #482

v0.9.0

0.9.0

Features

• new sequential model checker that is using TransitionExecutor, see #467
• new command-line options, see #467 and the manual for details:
  • choose the algorithm: --algo=(offline|incremental)
  • pre-check, whether a transition disabled, discard the disabled transitions: --discard-disabled
  • do not check for deadlocks: --no-deadlock
  • pass tuning parameters in CLI: --tune-here
• parsing in-comment Java-like annotations, see #226
• tracking the source of variable/constant declarations and operator
  definitions in the TLA+ Parser, see #262

Bug fixes

• the new sequential model checker has uncovered a bug that was not found
  by the old model checker, see #467

Documentation

• ADR004: In-comment annotations for declarations (of constants, variables, operators)

v0.8.3

0.8.3

Bug fixes

• Fixed path of jar in ZIP distribution, reported in #500, see #506

v0.8.2

0.8.2

Bug fixes

• handling big integers, see #450
• better parsing of SPECIFICATION in TLC configs, see #468
• expanding tuples in quantifiers, see #476
• unfolding UNCHANGED for arbitrary expressions, see #471
• unfolding UNCHANGED <<>>, see #475

Features

• constant simplification over strings, see #197
• propagation of primes inside expressions,
  e.g., (f[i])' becomes f'[i'] if both f and i are state variables

v0.8.1

Bug fixes

• critical bugfix in unique renaming, see #429
• include missing {Apalache,Typing}.tla modules in release package, see #447

Features

• opt-in for statistics collection (shared with TLC and TLA+ Toolbox), see #288

Architecture

• new layer of TransitionExecutor (TRex), see at.forsyte.apalache.tla.bmcmt.trex.*

Documentation

• Compile the manuals into a static
  site using
  mdBook, see #400
• Description of top-level user operators, see #419
• ADR003: Architecture of TransitionExecutor

v0.8.0

0.8.0 [RELEASE]

• use openjdk-9 for deterministic Apalache Docker images, see #318
• support for advanced syntax in TLC configs, see #208
• random seed for z3, see docs/tuning.md and #318
• correct translation of chained substitutions in INSTANCEs, see #143
• friendly messages for unexpected expressions, see #303
• better operator inlining, see #283
• support for standard modules that are instantiated with LOCAL INSTANCE, see #295
• support for LAMBDAs, see #285 and #289
• bugfix in treatment of recursive operators, see #273
• no theories in the model checker due to types, see #22
• operators and checker caches made Serializable
• better diagnostics for the recursive operators, see #272
• verbose output for the config parser, see #266
• Use a staged docker build, reducing container size ~70%, see #195
• Use Z3-TurnKey instead of a
  bespoke Z3 build, see #219
• Use Z3 version 4.8.7.1, see #219
• Re-stabilized tests on recursive operators, see #344
• Changed the assignment paradigm; solver now finds assignments without SMT, see #366