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
22238bb398
Switch to C++17
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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
cbe87d8cb7
Fixed issue with simplifying binary operations in arguments.
2017-06-09 22:00:00 +02:00
9d1a1249d3
Removed obsolete to-do.
2017-06-09 20:19:46 +02:00
bbbd0b65a4
Added new option --parentheses=full to make parsing the output easier.
2017-06-06 02:02:26 +02:00
0285c1cbbb
Renamed internal variables for clarity.
2017-06-06 01:44:44 +02:00
14abc37116
Implemented #show statements for completed output.
2017-06-05 03:02:22 +02:00
b4c8ce3dc4
Extended AST visitors with optional return type.
2017-06-04 21:59:19 +02:00
4ed4458f1b
Fixed typos in error messages.
2017-06-04 04:43:07 +02:00
64bd1c17e3
Improved debug output.
2017-06-02 14:59:13 +02:00
2bc60d3eea
Started implementing support for #show statements.
2017-06-01 04:05:11 +02:00
663c59c470
Removed unused function.
2017-06-01 03:43:18 +02:00
85614296e2
Improved debug message.
2017-06-01 03:32:19 +02:00
cdcee897ec
Added missing error message when input file does not exist.
2017-06-01 03:29:09 +02:00
4baed6fbc6
Added back completion support.
2017-06-01 02:37:45 +02:00
c47bd3c934
Noted to-do.
2017-06-01 02:32:45 +02:00
b918da3c49
Minor formatting.
2017-06-01 00:19:09 +02:00
e998c5b7be
Removed unused variable.
2017-06-01 00:16:02 +02:00
957457939c
Minor formatting.
2017-06-01 00:15:48 +02:00
4f003a8730
Noted to-do.
2017-05-31 18:12:24 +02:00
830b8846d6
Added more constructor options for exceptions.
2017-05-31 18:10:55 +02:00
193b7f5c91
Noted to-do.
2017-05-31 18:07:27 +02:00
0d8b1e94da
Refactored error handling.
2017-05-31 18:03:19 +02:00
1de0486989
Removed unnecessary namespace identifiers.
2017-05-30 18:13:31 +02:00
664a57ec68
Fixed issue with multi-layer variable stacks.
2017-05-30 18:09:33 +02:00
7aad8380d1
Refactored logging interface.
2017-05-30 17:19:26 +02:00
59fbc473df
Dropping now unused head variable names.
2017-05-30 16:40:56 +02:00
2964dd1309
Restricting variable stack look-up to user-defined variables.
2017-05-30 16:39:44 +02:00
f78c0e4da5
Reordered constructor parameters of VariableDeclaration.
2017-05-30 16:27:45 +02:00
9a3c85dc83
Dropping now unused body variable names.
2017-05-30 16:20:57 +02:00
1c925d661b
Major refactoring to uniquely link variables to their declarations (breaks simplification and completion).
2017-05-30 03:56:35 +02:00
ce159c7bf0
Added missing assertion.
2017-05-23 15:25:55 +02:00
d056fabb8b
Fixes lost signs with negated 0-ary predicates.
2017-05-04 15:44:37 +02:00
108c51cf28
Fixed Variant move semantic issue with older compilers.
2017-04-11 16:59:58 +02:00
d999415c3d
Enforcing move semantics on all AST elements explicitly.
2017-04-11 15:55:31 +02:00
5948d30e5c
Refactored implementation of completion.
2017-04-10 16:32:12 +02:00
37526bcc8e
Fixed incorrect handling of implications with Booleans.
2017-04-08 20:17:01 +02:00
8210adea7c
Added support for completion of integrity constraints.
2017-04-08 18:25:59 +02:00
a716da4af1
Finished implementing completion (unit tests to follow).
2017-04-08 16:21:24 +02:00
811eb3054c
Partly implemented completion.
2017-04-06 17:46:16 +02:00
c3351206b9
Removed unused code.
2017-04-06 17:19:32 +02:00
27b46ceee1
Added scaffold for implementing completion.
2017-04-05 18:21:38 +02:00
838a68e230
Refactoring to prepare for implementing completion.
2017-04-05 18:15:42 +02:00
5940fc4a3b
Removed workarounds thanks to a fix in clingo.
2017-04-01 03:13:52 +02:00
584e631cc0
Removed now unneeded declarations.
2017-03-30 17:03:57 +02:00
284b0fcff4
Removed unnecessary default case.
2017-03-30 00:54:20 +02:00
3c79625685
Constrained the element’s type in set element expressions to primitive terms.
2017-03-29 23:56:58 +02:00
d0cbdb13e5
Fixed misleading error message concerning negated, unsupported body literals.
2017-03-29 23:09:40 +02:00
0e5ee59ea7
Simplified handling of unsupported clingo statements.
2017-03-29 21:32:11 +02:00
f28873617d
Implemented translation of anonymous variables.
2017-03-29 21:28:46 +02:00
