patrick/anthem
1
0
Fork 0
Code Issues 15 Releases 21 Activity
293 Commits 2 Branches 21 Tags
2372eb24c4cfe975e3f533a606193b97a0d6331b
Commit Graph
118 Commits
Author SHA1 Message Date
patrick 2372eb24c4 Refactor predicate representation 
This refactoring separates predicates from their declarations. The
purpose of this is to avoid duplicating properties specific to the
predicate declaration and not its occurrences in the program.
 2018-04-20 16:37:47 +02:00
patrick 87dcd6ee93 Add domain specifier to variable declarations 
With this change, the domain of variable declarations can be specified.
While the default is the general domain of all precomputed value, this
adds support for integer variables, for which advanced simplification
rules apply.
 2018-04-20 16:37:47 +02:00
patrick 04094eee23 Remove unnecessary parentheses 
The unary modulus operation does not require extra parentheses to be
printed in cases like “|X + Y|”. This adds a new option to the printing
routine to omit parentheses in cases where the parent expression already
defines a parenthesis-like scope (currently only with unary operations).
 2018-04-12 00:59:03 +02:00
patrick 8c250f5c59 Support modulus operation (absolute value) 
This adds support for computing the absolute value of a term along with
an according unit test.
 2018-04-12 00:38:48 +02:00
patrick 6d7b91c391 Add new simplification rule 
This adds the rule “(F <-> (F and G)) === (F -> G)” to the
simplification rule tableau.
 2018-04-10 22:34:47 +02:00
patrick b88393655a Iteratively apply simplification tableau rules 
With this change, the tableau rules for simplifying formula are applied
iteratively until a fixpoint is reached.
 2018-04-10 22:34:47 +02:00
patrick eaabeb0c55 Support exponentiation operator 
Because of a bug in the Clingo API, the exponentation operator was not
properly exposed to anthem. This updates Clingo to a version with a
fixed API and adds proper support for exponentation within anthem along
with a matching unit test.
 2018-04-10 22:29:55 +02:00
patrick c294a29cb2 Support placeholders with #external declarations 
This adds support for declaring predicates as placeholders through the
“#external” directive in the input language of clingo.

Placeholders are not subject to completion. This prevents predicates
that represent instance-specific facts from being assumed as universally
false by default negation when translating an encoding.

This stretches clingo’s usual syntax a bit to make the implementation
lightweight. In order to declare a predicate with a specific arity as a
placeholder, the following statement needs to be added to the program:

    #external <predicate name>(<arity>).

Multiple unit tests cover cases where placeholders are used or not as
well as a more complex graph coloring example.
 2018-04-08 20:28:57 +02:00
patrickandpatrick 22238bb398 Switch to C++17 
With C++17, optionals, an experimental language feature, were moved to
the “std” namespace. This makes C++17 mandatory and drops the now
obsolete “experimental” namespace.
 2018-03-24 16:09:52 +01:00
patrick cbe87d8cb7 Fixed issue with simplifying binary operations in arguments. 2017-06-09 22:00:00 +02:00
patrick 9d1a1249d3 Removed obsolete to-do. 2017-06-09 20:19:46 +02:00
patrick bbbd0b65a4 Added new option --parentheses=full to make parsing the output easier. 2017-06-06 02:02:26 +02:00
patrick 0285c1cbbb Renamed internal variables for clarity. 2017-06-06 01:44:44 +02:00
patrick 14abc37116 Implemented #show statements for completed output. 2017-06-05 03:02:22 +02:00
patrick b4c8ce3dc4 Extended AST visitors with optional return type. 2017-06-04 21:59:19 +02:00
patrick 4ed4458f1b Fixed typos in error messages. 2017-06-04 04:43:07 +02:00
patrick 64bd1c17e3 Improved debug output. 2017-06-02 14:59:13 +02:00
patrick 2bc60d3eea Started implementing support for #show statements. 2017-06-01 04:05:11 +02:00
patrick 663c59c470 Removed unused function. 2017-06-01 03:43:18 +02:00
patrick 85614296e2 Improved debug message. 2017-06-01 03:32:19 +02:00
patrick cdcee897ec Added missing error message when input file does not exist. 2017-06-01 03:29:09 +02:00
patrick 4baed6fbc6 Added back completion support. 2017-06-01 02:37:45 +02:00
patrick c47bd3c934 Noted to-do. 2017-06-01 02:32:45 +02:00
patrick b918da3c49 Minor formatting. 2017-06-01 00:19:09 +02:00
patrick e998c5b7be Removed unused variable. 2017-06-01 00:16:02 +02:00
patrick 957457939c Minor formatting. 2017-06-01 00:15:48 +02:00
patrick 4f003a8730 Noted to-do. 2017-05-31 18:12:24 +02:00
patrick 830b8846d6 Added more constructor options for exceptions. 2017-05-31 18:10:55 +02:00
patrick 193b7f5c91 Noted to-do. 2017-05-31 18:07:27 +02:00
patrick 0d8b1e94da Refactored error handling. 2017-05-31 18:03:19 +02:00
patrick 1de0486989 Removed unnecessary namespace identifiers. 2017-05-30 18:13:31 +02:00
patrick 664a57ec68 Fixed issue with multi-layer variable stacks. 2017-05-30 18:09:33 +02:00
patrick 7aad8380d1 Refactored logging interface. 2017-05-30 17:19:26 +02:00
patrick 59fbc473df Dropping now unused head variable names. 2017-05-30 16:40:56 +02:00
patrick 2964dd1309 Restricting variable stack look-up to user-defined variables. 2017-05-30 16:39:44 +02:00
patrick f78c0e4da5 Reordered constructor parameters of VariableDeclaration. 2017-05-30 16:27:45 +02:00
patrick 9a3c85dc83 Dropping now unused body variable names. 2017-05-30 16:20:57 +02:00
patrick 1c925d661b Major refactoring to uniquely link variables to their declarations (breaks simplification and completion). 2017-05-30 03:56:35 +02:00
patrick ce159c7bf0 Added missing assertion. 2017-05-23 15:25:55 +02:00
patrick d056fabb8b Fixes lost signs with negated 0-ary predicates. 2017-05-04 15:44:37 +02:00
patrick 108c51cf28 Fixed Variant move semantic issue with older compilers. 2017-04-11 16:59:58 +02:00
patrick d999415c3d Enforcing move semantics on all AST elements explicitly. 2017-04-11 15:55:31 +02:00
patrick 5948d30e5c Refactored implementation of completion. 2017-04-10 16:32:12 +02:00
patrick 37526bcc8e Fixed incorrect handling of implications with Booleans. 2017-04-08 20:17:01 +02:00
patrick 8210adea7c Added support for completion of integrity constraints. 2017-04-08 18:25:59 +02:00
patrick a716da4af1 Finished implementing completion (unit tests to follow). 2017-04-08 16:21:24 +02:00
patrick 811eb3054c Partly implemented completion. 2017-04-06 17:46:16 +02:00
patrick c3351206b9 Removed unused code. 2017-04-06 17:19:32 +02:00
patrick 27b46ceee1 Added scaffold for implementing completion. 2017-04-05 18:21:38 +02:00
patrick 838a68e230 Refactoring to prepare for implementing completion. 2017-04-05 18:15:42 +02:00