Releases · Deducteam/lambdapi

	master	refiner
holide	7:0	11:33
iprover	5:58	6:50

CHANGES:

Release of the VSCode extension on the Marketplace (2021-12-10)

Add editors/vscode/CHANGES.md and editors/vscode/CONTRIBUTING.md.
Update documentation and README.md files.

Structured proof scripts (2021-12-07)

A tactic replacing the current goal by n new goals must be followed by n proof scripts enclosed in curly brackets. For instance, instead of writing induction; /* case 0 */ t1; ..; tm; /* case s */ q1; ..; qn, we must now write induction {t1; ..; tm} {q1; ..; qn}.

Exception for tactics not really changing the current goal like "have": /* proof of u */ have h: t; /* proof of t */ t1; ..; tm; /* proof of u continued */ q1; ..; qn must now be written have h: t {t1; ..; tm}; q1; ..; qn.

Other modifications in the grammar:

Curly brackets are reserved for proof script structuration.
Implicit arguments must be declared using square brackets instead of curly brackets: we must write [a:Set] instead of {a:Set}.
Term environments and rewrite patterns must be preceded by a dot: we must now write $f.[x] instead of $f[x].
The focus command is removed since it breaks structuration.

Improve and simplify LP lexer (2021-12-07)

allow nested comments (fix #710)
replace everywhere %S by \"%s\"
move checking compatibility with Bindlib of identifiers from lexer to scope
move is_keyword from lexer to pretty
move package.ml from common/ to parsing/
change Config.map_dir field type to (Path.t * string) list,
Library.add_mapping type to Path.t * string -> unit
and Compile.compile argument lm type to Path.t * string

Update dkParser to be in sync with dkcheck (2021-11-30)

Add option `--record-time` (2021-11-30)

Improve evaluation and convertibility test (2021-06-02)

fix _LLet by calling mk_LLet
substitute arguments in TEnv's at construction time (mk_TEnv)
improve eq_modulo to avoid calling whnf when possible
use Eval.pure_eq_modulo in Infer and Unif (fix #693)

Improve logs (2021-06-01)

add Base.out = Format.fprintf
uniformize printing code using Base.out
rename oc arguments into ppf
complete Term.pp_term
improve some functions in Debug.D
improve logging messages in Infer by adding a level argument

Better handling of let's (2021-05-26)

mk_LLet removes useless let's
rename Eval.config into strat
factorize whnf_beta and whnf
fix handling of variable unfoldings in whnf_stk
optimize context lookup by using a map
gather problem, context, map and rewrite into a record data type
abstract whnf in hnf, snf and eq_modulo
fix typing of let's
improve printing

Interface Improvements (2021-05-20)

Error messages are shown in logs buffer
Improvements in behaviour of Emacs interface
New shortcuts C-c C-k and C-c C-r for killing and reconnecting to the
LSP server

Record metavariable creation and instantiation during scoping, type inference and unification (2021-05-20)

the record type problem gets a new field metas, and all its fields are now mutable
many functions now take as argument a problem
the functions infer_noexn, check_noexn and check_sort are moved to Query
(they do not need to take a solver as argument anymore)
in Unif, add_constr was defined twice; this is now fixed
the modules Meta in Term and LibTerm are moved to the new file libMeta
various mli files are created
in Unif, initial is removed and instantiation is allowed to generate new constraints

Bugfixes in rewriting engine (2021-05-06)

Add tests on product matching
Fixed scoping of product in LHS
Wildcard created during tree compilation are the most general ones, any free
variable may appear.
Updated documentation of decision trees

Factorize type `rw_patt` (2021-04-07)

The types Term.rw_patt and Syntax.p_rw_patt_aux are merged into a
single polymorphic type Syntax.rw_patt.

API modification (2021-04-07)

Several functions are exposed,

Parsing.Scope.rule_of_pre_rule: converts a pre rewriting rule into a
rewriting rule,
Handle.Command.handle: now processes proof data,
Handle.Command.get_proof_data: is the old handle,
Handle.Compile.compile_with: allows to provide a command handler to compile
modules

Add commutative and associative-commutative symbols (2021-04-07)

Add term.mli and turn the term type into a private type so that
term constructors are not exported anymore (they are available for
pattern-matching though). For constructing terms, one now needs to
use the provided construction functions mk_Vari for Vari,
mk_Appl for Appl, etc.
Move some functions LibTerm to Term, in particular get_args,
add_args and cmp_term.
Rename the field sym_tree into sym_dtree.
Redefine the type rhs as (term_env, term) Bindlib.mbinder
instead of (term_env, term) Bindlib.mbinder * int so that the old
rhs needs to be replaced by rhs * int in a few places.

Improvements in some tactics (2021-04-05)

fix have
improve the behavior of apply
assume not needed before reflexivity anymore
assume checks that identifiers are distinct
solve: simplify goals afterwards
libTerm: permute arguments of unbind_name, and add add_args_map and unbind2_name
syntax: add check_notin and check_distinct
split misc/listings.tex into misc/lambdapi.tex and misc/example.tex

Extend command `inductive` to strictly-positive inductive types (2021-04-02)

Renamings (2021-04-01)

./tools/ -> ./misc
./src/core/tree_types.ml -> ./src/core/tree_type.ml

Do not unescape identifiers anymore, and move `scope.ml` from `Core` to `Parsing` (2021-03-30)

escaped regular identifiers are automatically unescaped in lexing
unescaping is done in filenames only
Escape.add_prefix and Escape.add_suffix allow to correctly extend potentially escaped identifiers
move scope.ml from Core to Parsing

Forbid bound variable names ending with a positive integer with leading zeros since there are not compatible with Bindlib (2021-03-29)

Fix #341: remove spurious warnings on bound variables (2021-03-29)

scope.ml:
- the inner functions of scope are brought to the top-level
- scope_term_with_params is introduced: it is similar to scope_term but does not check that top-level bound variables are used
- _Meta_Type is moved to env.ml as fresh_meta_type
command.ml:
- use scope_term_with_params and check that parameters are indeed used
- get_implicitness moved to syntax.ml as get_impl_term
- fix implicit arguments computation in case of no type by introducing Syntax.get_impl_params_list
in various places: use pp_var instead of Bindlib.name_of
replace expo argument in scoping and handling by boolean telling if private symbols are allowed
allow private symbols in queries

Introduce `new_tvar = Bindlib.new_var mkfree` (2021-03-26)

Add tactic `generalize`, and rename tactic `simpl` into `simplify` (2021-03-25)

Use Dune for opam integration (2021-03-25)

Content of lambdapi.opam is moved to dune-project and the former is
generated using dune build @install.
Vim files are installed in opam prefix using dune.
The emacs mode is declared as a sub-package.

Add tactic `have` (2021-03-24)

Compatibility with Why3 1.4.0

Add tactic `simpl <id>` for unfolding a specific symbol only (2021-03-22)

and slightly improve Ctxt.def_of

Bug fixes (2021-03-22)

fix type inference in the case of an application (t u) where the type of t is not a product yet (uncomment code commented in #596)
fix the order in which emacs prints hypotheses
fix opam dependencies: add constraint why3 <= 1.3.3

Fix and improve inverse image computation (2021-03-16)

fix and improve in inverse.ml the computation of the inverse image of a term wrt an injective function (no unification rule is needed anymore in common examples, fix #342)
fix management of "initial" constraints in unification (initial is now a global variable updated whenever a new constraint is added)
when applying a unification rule, add constraints on types too (fix #466)
turn Infer.make_prod into Infer.set_to_prod
add pp_constrs for printing lists of constraints
make time printing optional
improve visualization of debugging data using colors:
. blue: top-level type inference/checking
. magenta: new constraint
. green: constraint to solve
. yellow: data from signature or context
. red: instantiations (and handled commands)

Add tactic admit (2021-03-12)

rename command admit into admitted
admitted: admit the initial goal instead of the remaining goals (when the proof is an opaque definition)
move code on admit from command.ml to tactic.ml
add tactic admit (fix #380)
As a consequence, tactics can change the signature state now.

Improvements in type inference, unification and printing (2021-03-11)

improve type inference and unification
add flag "print_meta_args"
print metavariables unescaped, add parentheses in domains
replace (current_sign()).sign_path by current_path()
improve logging:
. debug +h now prints data on type inference/checking
. provide time of type inference/checking and constraint solving
. give more feedback when instantiation fails

Remove `set` keyword (2021-03-04)

Various bug fixes (2021-03-02)

allow matching on abstraction/product type annotations (fix #573)
Infer: do not check constraint duplication and return constraints in the order they have been added (fix #579)
inductive type symbols are now declared as constant (fix #580)
fix parsing and printing of unification rules
Extra.files returns only the files that satisfy some user-defined condition
tests/ok_ko.ml: test only .dk and .lp files
Pretty: checking that identifiers are LP keywords is now optional (useful for debug)

Releases: Deducteam/lambdapi

2.1.0

Added

Changed

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2.0.0