package acgtk

Version 1.5.0

The acgc.opt/acgc compiler and the acg.opt/acg interpreter:

• Removed the dependency to BOLT (replaced by Logs) and dypgen (replaced by menhir)

• Some syntax changes:

  1. Prefix operators have the highest priority

  2. Application has precedence over infix operators

  3. An associativity property (none, left, right) can be set to infix operators (left is the default), and a precedence level as well. See the associativity and the precedence section in the README.

  4. Infix operator can be used as usual constant by surrounding then with left and right parenthesis, so that t SYM u = (SYM) t u

Version 1.4.0

The acgc.opt/acgc compiler and the acg.opt/acg interpreter:

• Improved performance by better logging management (for debug)

• Extended set of latin1 characters allowed in .acg files

Version 1.3.3

The acgc.opt/acgc compiler and the acg.opt/acg interpreter:

• the build process now relies on jbuilder

Version 1.3.1

The acg.opt/acg interpreter

• Bug fix: constants that were given two interpretations in a lexicon (only the last one is available) generated two rules in the corresponding datalog program (hence possibly several parses)

• Bug fix: when an object constant was the direct interpretation of an abstract constant, parsing this object constant raised an exception

• an option -svg filename is added to ./acg and ./acg.opt to allow the user to provide another name than the default realize.svg to the svg output file.

Configuration and opam file

• an option --disable-warning-as-errors to the .configure script in order to make opam compile without the -warn-error A option.

Version 1.3.0

The acg.opt/acg interpreter

• Colors and link between signature and rendering engines are now defined in a json configuration file. The option to load the configuration is -realize.

Version 1.2

The acg.opt/acg interpreter

• Added the generation of a realize.svg file when the realize command of acg is invoked. Colors and link between signature and rendering engines are hard-coded.

• An option is added to toggle of the realize.svg file generation (takes a bit of time)

Version 1.1

The acgc.opt/acgc compiler and the acg.opt/acg interpreter:

• Fixed severe bug that prevented finding some parses and sometimes caused a Fatal Error

• Added a control on the compiler version that generated the object (.acgo) files. The version has to be the same as the current version of the compiler or of the interpreter that is being used.

The acgc.opt/acgc compiler:

• added a nl_lexicon keyword that causes the interpretation of any functional type (-> or =>) of the abstract signature to be interpreted by the intuitionistic arrow => in the object signature.

  Accordingly, the interpretation should use Lambda.

The acg.opt/acg interpreter:

• Improved terminal output (colors and formatting)

• added a -nc option to disable colored outputs

• added a -npp option to disable formatting on the output

The acg emacs mode

• improved handling of long files

Version 1.0b

The acgc.opt/acgc compiler:

• Now outputs an file.acgo file when compilation is successful

• Can declare a lexicon as the composition of two other lexicons using the following declaration:

  lexicon lex_name = lex_name2 << lex_name1
  

The acg.opt/acg interpreter:

• Can load an acg object file using the command:

  load o file.acco;
  

• The analyse command is deprecated. It is replaced by:

  • A check command, prefixed by signatures, that typecheck the typing assignment of a term

    Sig1 Sig2 check term:type;
    

  • A realize command that must be preceded by lexicons and followed by the type assignment of a term. It checks that the term is well typed in the abstract signatures of the lexicons and compute its realizations through the lexicons.

    Lex1 Lex2 realize term:type;
    

  • A parse command has been added. It must be preceded with the name of a lexicon and it returns the antecedent by this lexicon of the input term with respect to some distinguished (atomic) type:

    Lex parse object_term:distinguished_type;
    

• A query command has been added. It follows the parse command syntax and it outputs the associated query and associated extensional database.

Lex query object_term:distinguished_type;

• A idb command has been added. It must be preceded with the name of a lexicon and it returns the intensional database associated with the lexicon

Lex idb;

Current limitation:

• Only parse images of atomic types

• The result of parsing with non-linear lexicons is unspecified yet