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Unreleased

Added

  • Add test cases for some unsupported constructs #466
  • Adapt to cmdliner.2.0.0 #470
  • Add support for mutually recursive ghost types #403
  • Add syntax for building sets #476

Improved

  • Add option as an OCaml primitive type constructor #464
  • Check for repeated name of module and module types #444
  • Fix bug in creation of fresh type variables #435
  • Fix typing of pattern with inlined record #429
  • Remove support for the record update syntax #428
  • Rewrote the Gospel standard library to focus on the definition of mathematical objects. #423
  • Fix typing of expression with inlined record #420
  • Improve error message for unbound record fields #419
  • Collect all the missing fields in a record definition and don't accept incomplete record pattern syntax that OCaml consider incorrect #418
  • Display proper error message for a number of unsupported construction #406
  • Display an error message when encountering a Functor application #404
  • Changed the gospel typechecker to use bool as the type of logical formulae #391
  • Add nested exceptional specifications #452
  • More expressive let pattern matching #457
  • Warning for invalid header name states expected name #471
  • Better error message for unbound modules #473
  • Fix bug regarding location of top level variables #474
  • Fix bug where non-functional values could not be specified. #475

Internals

  • Extract and document typing environment #447
  • Add documentation to Symbols and Ttypes modules #445
  • Add documentation and refactor Tmodule #442
  • Gospel type checker rewrite #449
  • Fixity now appears in the identifier object #453
  • Fix bug in building constraints for lambdas #455
  • Fix print function for tagged identifiers #458
  • Refactor name lookup #473

0.3

Added

  • Created a gallery of Gospel examples that might serve as a working ground to experiment with Gospel syntax and future extensions of the language. #361

Improved

  • Make the type-checker save type information in a file #376
  • Make the with necessary when declaring type invariants #372 and #374

Internals

  • Fix premature parsing of specification keywords in the preprocessor. #394
  • Fix ls_name of unit logical symbol to be () #387
  • Fix the is_ts_tuple function so that it doesn't take unit to be a tuple #386
  • Use unique identifiers rather than physical equality for Symbols.ls_equal #380
  • Remove the gospel_expected prologue at the end of successful tests #363

0.2

Added

  • Introduce a generic pp_gen pretty-printer for error messages, so that external tools can pretty-print errors in the same style #326
  • Add ppx rewriter to display gospel contents as documentation with odoc #288
  • Add specific error message for patterns with guard on every clause. #220
  • Added when guards in pattern-matching #206
  • Added a with construct to name a variable in type invariants referring to a value of the specified type. #218 and #187
  • Added support for int literals. #175 and #177 and #223
  • Added the Failure exception to the Stdlib. #154
  • Added a gospel dumpast command. #98 and #184

Improved

  • Forbid old operator in precondition clauses (requires and checks) #335
  • Display a warning when encountering an include #334
  • Allow patterns in arguments and return type annotation in anonymous functions #309
  • Propagate pattern locations to report errors to the precise patterns #308
  • Support partial application of functions and enforce OCaml syntax for constructor application #290
  • Add a pretty-printer for locations #294
  • Gospel preprocessor does not fail when the file is an implementation file #265
  • Rename standard library Seq and 'a seq to Sequence and 'a sequence. #253
  • Allow unit result in function header #215
  • Highlight source locations when reporting errors. #214
  • Check for pattern-matching redundancy in terms. #213
  • Check for pattern-matching exhaustivity in terms. #170
  • Issue a warning when a function returns unit but has no modifies clause. #185
  • Improved locations for syntax errors in specs. #164
  • Documentation improvements. #108 and #110 and #149
  • Added sanity checks to type invariants: invariants are only allowed on private or abstract types. #117 and #116
  • Stdlib changes. #102
    • Removed ref operator.
    • Removed elements for Bag and Set.
    • compare functions returns integers instead of ints.

Fixed

  • Fix the performance issues in the preprocessor #353
  • Gospel preprocessor support documentation for ghost declaration #331
  • Consider comments as spaces while preprocessing (to ensure specification can be attached to a ghost function or type, for instance) #321
  • Fix source-location tracking (directives and overridden filename) #319
  • Set up location in parsing ghost specifications #310
  • Check that all patterns in a disjunction bind the same variables #300
  • Handle the special case of MODULE_ALIASES in stdlib.mli in the parser #306
  • Take recursivity into account when typing type declarations #304
  • Support pattern with cast #301
  • Use payload location for specification text #299
  • Support patterns of one-parameter constructors with a tuple argument #297
  • Use correct location for arity mismatches in type applications #258
  • Avoid uncaught exception when displaying a warning for builtins (using Location.none) #283
  • Gospel preprocessor no longer detach documentation below a declaration #281
  • Fixed pattern match analysis in exceptional postconditions #277
  • Avoid uncaught exception when displaying a warning on a dummy position #262
  • Constants can now be referenced in specifications. #211
  • Infix operators in specificaion headers are now accepted. #205
  • Fix inconsistencies in typing/parsing of exceptional postconditions patterns. #203
  • Fixed the type-checking of interfaces involving the OCaml Stdlib, which was not opened by default. GADTs are considered abstract types. #195
  • Fixed incorrectly rejected interfaces with absent\partial function contracts in the presence of tuples as return values. #193
  • Fixed support for types containing functions. #186
  • Fixed wrong syntax errors in patterns. #181
  • Fixed wrong invalid patterns over unit values. #174
  • Fixed the error message for pattern type errors. #172

Internals

  • Display the backtrace of an error when $GOSPELDEBUG is set #295
  • Fixed the order of exceptional postconditions in the AST. #200
  • Refactored the error handling: Gospel now only raises a single Gospel.Error exception. #189
  • Fixed the representation for type variables in ts_tuple and fs_tuple. #183
  • Added int as a primitive type. #171
  • Refactored Tterm and Symbols. #85
  • Redefined the ghost type. #155
  • Removed the Pty_open type constructor #109
  • Added paths to gospel identifiers. #396

0.1.0 (11-03-2021)

  • Initial release