7e3fc007c8
Move simplification rule to tableau
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This moves the rule “exists X (X = t and F(X)) === exists () (F(t))” to
the simplification rule tableau.
2018-04-10 22:34:46 +02:00
5c5411c0ff
Implement simplification rule tableau
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This implements a tableau containing simplification rules that can be
iteratively applied to input formulas until they remain unchanged.
First, this moves the rule “exists X (X = Y) === #true” to the tableau
as a reference implementation.
2018-04-10 22:34:46 +02:00
e64b2e70de
Remove unused captured lambda reference
2018-04-08 20:44:43 +02:00
c294a29cb2
Support placeholders with #external declarations
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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
5f8c144628
Fixed regression in simplifying predicates with more than one argument.
2017-06-12 18:27:39 +02:00
1f1006ea96
Corrected hiding predicates that are simple propositions.
2017-06-12 15:40:02 +02:00
a4cd133ba7
Correctly implemented hiding predicates with nested arguments.
2017-06-12 02:25:04 +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
95984f0447
Added warning when attempting to use #show statements without completion.
2017-06-05 04:24:00 +02:00
7ae0a1f289
Removed unnecessary parentheses after simplification.
2017-06-05 03:58:39 +02:00
3b26580815
Minor formatting.
2017-06-05 03:54:17 +02:00
14abc37116
Implemented #show statements for completed output.
2017-06-05 03:02:22 +02:00
4fd143ef64
Added simplification rule “exists X (X = Y)” → “#true.”
2017-06-05 02:41:17 +02:00
7bf5d3867d
Minor clarification on side effects of a function.
2017-06-05 00:19:43 +02:00
ab71e8eb0a
Minor refactoring.
2017-06-04 20:55:25 +02:00
dcc504ebc0
Added another simplification step after completion.
2017-06-04 20:55:24 +02:00
381d55b6ed
Minor formatting fix.
2017-06-01 16:16:06 +02:00
2bc60d3eea
Started implementing support for #show statements.
2017-06-01 04:05:11 +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
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
8214d7837a
Fixed incorrect variable declaration look-up in variable stack.
2017-05-30 16:40:14 +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
1917f18b6a
Added back simplification support.
2017-05-30 04:06:56 +02:00
1c925d661b
Major refactoring to uniquely link variables to their declarations (breaks simplification and completion).
2017-05-30 03:56:35 +02:00
c2f8762dc1
Removed unnecessary CMake directive.
2017-05-08 14:41:02 +02:00
6e7abb283e
Fixed minor incorrect variable references.
2017-04-10 17:50:19 +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
a23e248e7b
Omitting the universal quantifier for completion if predicate is 0-ary.
2017-04-08 14:51:16 +02:00
811eb3054c
Partly implemented completion.
2017-04-06 17:46:16 +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
3c79625685
Constrained the element’s type in set element expressions to primitive terms.
2017-03-29 23:56:58 +02:00
dbb106c40b
Fixed typo in comment.
2017-03-29 23:18:59 +02:00
dc0f700c46
Added missing subdirectory to CMake configuration.
2017-03-29 21:32:33 +02:00
3df4d5a2a2
Fixed incorrectly simplified rules with comparisons.
2017-03-28 17:13:15 +02:00
cae0948763
Completed implementing simplification with deep variable replacement.
2017-03-23 15:02:06 +01:00
42e0217409
Applying simplification to more cases.
2017-03-23 14:40:21 +01:00
574130a8ec
Minor clarifications in simplification code annotations.
2017-03-23 13:44:55 +01:00
188a24f5b5
Added some annotations to the simplification code.
2017-03-23 13:39:34 +01:00
