/*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % $Date: 2010-06-30 17:05:24 +0200 (Wed, 30 Jun 2010) $ % $Revision: 1 $ % % This file is part of YAP & ProbLog % http://www.dcc.fc.up.pt/~vsc/Yap/index.html % http://dtai.cs.kuleuven.be/problog % % ProbLog was developed at Katholieke Universiteit Leuven & % University of Porto % % Copyright 2010 Katholieke Universiteit Leuven & University of Porto % % Main authors of this file: Mantadelis Theofrastos, Ricardo Rocha % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % Artistic License 2.0 % % Copyright (c) 2000-2006, The Perl Foundation. % % Everyone is permitted to copy and distribute verbatim copies of this % license document, but changing it is not allowed. Preamble % % This license establishes the terms under which a given free software % Package may be copied, modified, distributed, and/or % redistributed. The intent is that the Copyright Holder maintains some % artistic control over the development of that Package while still % keeping the Package available as open source and free software. % % You are always permitted to make arrangements wholly outside of this % license directly with the Copyright Holder of a given Package. If the % terms of this license do not permit the full use that you propose to % make of the Package, you should contact the Copyright Holder and seek % a different licensing arrangement. Definitions % % "Copyright Holder" means the individual(s) or organization(s) named in % the copyright notice for the entire Package. % % "Contributor" means any party that has contributed code or other % material to the Package, in accordance with the Copyright Holder's % procedures. % % "You" and "your" means any person who would like to copy, distribute, % or modify the Package. % % "Package" means the collection of files distributed by the Copyright % Holder, and derivatives of that collection and/or of those files. A % given Package may consist of either the Standard Version, or a % Modified Version. % % "Distribute" means providing a copy of the Package or making it % accessible to anyone else, or in the case of a company or % organization, to others outside of your company or organization. % % "Distributor Fee" means any fee that you charge for Distributing this % Package or providing support for this Package to another party. It % does not mean licensing fees. % % "Standard Version" refers to the Package if it has not been modified, % or has been modified only in ways explicitly requested by the % Copyright Holder. % % "Modified Version" means the Package, if it has been changed, and such % changes were not explicitly requested by the Copyright Holder. % % "Original License" means this Artistic License as Distributed with the % Standard Version of the Package, in its current version or as it may % be modified by The Perl Foundation in the future. % % "Source" form means the source code, documentation source, and % configuration files for the Package. % % "Compiled" form means the compiled bytecode, object code, binary, or % any other form resulting from mechanical transformation or translation % of the Source form. % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % Permission for Use and Modification Without Distribution % % (1) You are permitted to use the Standard Version and create and use % Modified Versions for any purpose without restriction, provided that % you do not Distribute the Modified Version. % % Permissions for Redistribution of the Standard Version % % (2) You may Distribute verbatim copies of the Source form of the % Standard Version of this Package in any medium without restriction, % either gratis or for a Distributor Fee, provided that you duplicate % all of the original copyright notices and associated disclaimers. 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In addition, the % modified Version must bear a name that is different from the name of % the Standard Version. (c) allow anyone who receives a copy of the % Modified Version to make the Source form of the Modified Version % available to others under (i) the Original License or (ii) a license % that permits the licensee to freely copy, modify and redistribute the % Modified Version using the same licensing terms that apply to the copy % that the licensee received, and requires that the Source form of the % Modified Version, and of any works derived from it, be made freely % available in that license fees are prohibited but Distributor Fees are % allowed. % % Distribution of Compiled Forms of the Standard Version or % Modified Versions without the Source % % (5) You may Distribute Compiled forms of the Standard Version without % the Source, provided that you include complete instructions on how to % get the Source of the Standard Version. Such instructions must be % valid at the time of your distribution. If these instructions, at any % time while you are carrying out such distribution, become invalid, you % must provide new instructions on demand or cease further % distribution. If you provide valid instructions or cease distribution % within thirty days after you become aware that the instructions are % invalid, then you do not forfeit any of your rights under this % license. % % (6) You may Distribute a Modified Version in Compiled form without the % Source, provided that you comply with Section 4 with respect to the % Source of the Modified Version. % % Aggregating or Linking the Package % % (7) You may aggregate the Package (either the Standard Version or % Modified Version) with other packages and Distribute the resulting % aggregation provided that you do not charge a licensing fee for the % Package. Distributor Fees are permitted, and licensing fees for other % components in the aggregation are permitted. The terms of this license % apply to the use and Distribution of the Standard or Modified Versions % as included in the aggregation. % % (8) You are permitted to link Modified and Standard Versions with % other works, to embed the Package in a larger work of your own, or to % build stand-alone binary or bytecode versions of applications that % include the Package, and Distribute the result without restriction, % provided the result does not expose a direct interface to the Package. % % Items That are Not Considered Part of a Modified Version % % (9) Works (including, but not limited to, modules and scripts) that % merely extend or make use of the Package, do not, by themselves, cause % the Package to be a Modified Version. In addition, such works are not % considered parts of the Package itself, and are not subject to the % terms of this license. % % General Provisions % % (10) Any use, modification, and distribution of the Standard or % Modified Versions is governed by this Artistic License. By using, % modifying or distributing the Package, you accept this license. Do not % use, modify, or distribute the Package, if you do not accept this % license. % % (11) If your Modified Version has been derived from a Modified Version % made by someone other than you, you are nevertheless required to % ensure that your Modified Version complies with the requirements of % this license. % % (12) This license does not grant you the right to use any trademark, % service mark, tradename, or logo of the Copyright Holder. % % (13) This license includes the non-exclusive, worldwide, % free-of-charge patent license to make, have made, use, offer to sell, % sell, import and otherwise transfer the Package with respect to any % patent claims licensable by the Copyright Holder that are necessarily % infringed by the Package. If you institute patent litigation % (including a cross-claim or counterclaim) against any party alleging % that the Package constitutes direct or contributory patent % infringement, then this Artistic License to you shall terminate on the % date that such litigation is filed. % % (14) Disclaimer of Warranty: THE PACKAGE IS PROVIDED BY THE COPYRIGHT % HOLDER AND CONTRIBUTORS "AS IS' AND WITHOUT ANY EXPRESS OR IMPLIED % WARRANTIES. THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A % PARTICULAR PURPOSE, OR NON-INFRINGEMENT ARE DISCLAIMED TO THE EXTENT % PERMITTED BY YOUR LOCAL LAW. UNLESS REQUIRED BY LAW, NO COPYRIGHT % HOLDER OR CONTRIBUTOR WILL BE LIABLE FOR ANY DIRECT, INDIRECT, % INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING IN ANY WAY OUT OF THE USE % OF THE PACKAGE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/ #include /* -------------------------- */ /* Local Procedures */ /* -------------------------- */ static void simplification_reduction(TrEntry trie); static TrNode depth_reduction(TrEntry trie, TrNode depth_node, YAP_Int opt_level); static TrNode breadth_reduction(TrEntry trie, TrNode breadth_node, YAP_Int opt_level); static inline int compare_label_nodes(TrData data1, TrData data2); static inline void move_after(TrData data_source, TrData data_dest); static inline void move_last_data_after(TrData moveto_data); static inline void set_depth_breadth_reduction_current_data(TrData data); /* -------------------------- */ /* Local Variables */ /* -------------------------- */ static TrData CURRENT_DEPTH_BREADTH_DATA; /* -------------------------- */ /* API */ /* -------------------------- */ YAP_Term trie_depth_breadth(TrEntry trie, TrEntry db_trie, YAP_Int opt_level, YAP_Int start_counter, YAP_Int *end_counter) { TrNode depth_node, breadth_node, nested_trie; core_set_label_counter(start_counter); CURRENT_TRIE = db_trie; core_set_trie_db_return_term(YAP_MkAtomTerm(YAP_LookupAtom("false"))); core_initialize_depth_breadth_trie(TrEntry_trie(db_trie), &depth_node, &breadth_node); set_depth_breadth_reduction_current_data(NULL); /* We only need to simplify the trie once! */ /* This can be a 10% overhead for sld cases :-( */ // printf("simplification\n"); trie_print(trie); if (TrNode_child(TrEntry_trie(trie))) simplification_reduction(trie); while (TrNode_child(TrEntry_trie(trie))) { // printf("depth\n"); trie_print(trie); nested_trie = depth_reduction(trie, depth_node, opt_level); if (nested_trie) { set_depth_breadth_reduction_current_data(get_data_from_trie_node(nested_trie)); core_finalize_depth_breadth_trie(depth_node, breadth_node); *end_counter = core_get_label_counter(); return YAP_MkApplTerm((YAP_Functor)(~ApplTag & TrNode_entry(TrNode_parent(nested_trie))), 1, &TrNode_entry(nested_trie)); } // printf("breadth\n"); trie_print(trie); nested_trie = breadth_reduction(trie, breadth_node, opt_level); if (nested_trie) { set_depth_breadth_reduction_current_data(get_data_from_trie_node(nested_trie)); core_finalize_depth_breadth_trie(depth_node, breadth_node); *end_counter = core_get_label_counter(); return YAP_MkApplTerm((YAP_Functor)(~ApplTag & TrNode_entry(TrNode_parent(nested_trie))), 1, &TrNode_entry(nested_trie)); } } core_finalize_depth_breadth_trie(depth_node, breadth_node); *end_counter = core_get_label_counter(); return core_get_trie_db_return_term(); } YAP_Int trie_get_db_opt_level_count(YAP_Int opt_level) { return core_db_trie_get_optimization_level_count(opt_level); } TrData trie_get_depth_breadth_reduction_current_data(void) { return CURRENT_DEPTH_BREADTH_DATA; } void trie_replace_nested_trie(TrEntry trie, YAP_Int nested_trie_id, YAP_Term new_term) { CURRENT_TRIE = trie; core_depth_breadth_trie_replace_nested_trie(TrNode_child(TrEntry_trie(trie)), nested_trie_id, new_term, &trie_data_construct, &trie_data_destruct); return; } YAP_Int trie_get_db_opt_min_prefix(void) { return core_get_trie_db_opt_min_prefix(); } void trie_set_db_opt_min_prefix(YAP_Int min_prefix) { core_set_trie_db_opt_min_prefix(min_prefix); return; } /* -------------------------- */ /* Local Procedures */ /* -------------------------- */ static inline void set_depth_breadth_reduction_current_data(TrData data) { CURRENT_DEPTH_BREADTH_DATA = data; return; } static void simplification_reduction(TrEntry trie) { TrNode node; TrData stop_data, new_data, data = NULL; stop_data = TrData_previous(TrEntry_first_data(trie)); data = TrEntry_traverse_data(trie) = TrEntry_last_data(trie); while ((data != stop_data) && (data != NULL)) { node = core_simplification_reduction(TRIE_ENGINE, TrData_leaf(data), &trie_data_destruct); if (node) { new_trie_data(new_data, trie, node); PUT_DATA_IN_LEAF_TRIE_NODE(node, new_data); } if (data == TrEntry_traverse_data(trie)) { data = TrData_previous(data); TrEntry_traverse_data(trie) = data; } else data = TrEntry_traverse_data(trie); } } static TrNode depth_reduction(TrEntry trie, TrNode depth_node, YAP_Int opt_level) { TrNode node; TrData stop_data, new_data, data = NULL; stop_data = TrData_previous(TrEntry_first_data(trie)); data = TrEntry_traverse_data(trie) = TrEntry_last_data(trie); while (data != stop_data) { node = core_depth_reduction(TRIE_ENGINE, TrData_leaf(data), depth_node, opt_level, &trie_data_construct, &trie_data_destruct, &trie_data_copy, &trie_data_order_correction); if (node && IS_FUNCTOR_NODE(TrNode_parent(node)) && (strcmp(YAP_AtomName(YAP_NameOfFunctor((YAP_Functor)(~ApplTag & TrNode_entry(TrNode_parent(node))))), NESTED_TRIE_TERM) == 0)) { //nested trie stop procedure return nested trie node return node; } if (node) { new_trie_data(new_data, trie, node); PUT_DATA_IN_LEAF_TRIE_NODE(node, new_data); } if (data == TrEntry_traverse_data(trie)) { data = TrData_previous(data); TrEntry_traverse_data(trie) = data; } else data = TrEntry_traverse_data(trie); } return NULL; } static TrNode breadth_reduction(TrEntry trie, TrNode breadth_node, YAP_Int opt_level) { TrNode node; TrData stop_data, new_data, data = NULL; stop_data = TrData_previous(TrEntry_first_data(trie)); data = TrEntry_traverse_data(trie) = TrEntry_last_data(trie); while ((data != stop_data) && (data != NULL)) { node = core_breadth_reduction(TRIE_ENGINE, TrData_leaf(data), breadth_node, opt_level, &trie_data_construct, &trie_data_destruct, &trie_data_copy, &trie_data_order_correction); if (node && IS_FUNCTOR_NODE(TrNode_parent(node)) && (strcmp(YAP_AtomName(YAP_NameOfFunctor((YAP_Functor)(~ApplTag & TrNode_entry(TrNode_parent(node))))), NESTED_TRIE_TERM) == 0)) { //nested trie stop procedure return nested trie node return node; } if (node) { new_trie_data(new_data, trie, node); PUT_DATA_IN_LEAF_TRIE_NODE(node, new_data); } if (data == TrEntry_traverse_data(trie)) { data = TrData_previous(data); TrEntry_traverse_data(trie) = data; } else data = TrEntry_traverse_data(trie); } return NULL; } static inline void move_last_data_after(TrData moveto_data) { TrEntry trie = CURRENT_TRIE; TrData last_data = TrEntry_last_data(trie); TrEntry_last_data(trie) = TrData_previous(last_data); TrData_next(TrData_previous(last_data)) = TrData_next(last_data); if (moveto_data == TrData_previous(TrEntry_first_data(trie))) { TrData_next(last_data) = TrEntry_first_data(trie); TrEntry_first_data(trie) = last_data; } else { TrData_next(last_data) = TrData_next(moveto_data); TrData_next(moveto_data) = last_data; } TrData_previous(last_data) = moveto_data; TrData_previous(TrData_next(last_data)) = last_data; return; } static inline void move_after(TrData data_source, TrData data_dest) { TrEntry trie = CURRENT_TRIE; if (data_source == TrEntry_first_data(trie)) TrEntry_first_data(trie) = TrData_next(data_source); else TrData_next(TrData_previous(data_source)) = TrData_next(data_source); if (data_source == TrEntry_last_data(trie)) TrEntry_last_data(trie) = TrData_previous(data_source); else TrData_previous(TrData_next(data_source)) = TrData_previous(data_source); if (data_dest == TrData_previous(TrEntry_first_data(trie))) { TrData_next(data_source) = TrEntry_first_data(trie); TrData_previous(TrEntry_first_data(trie)) = data_source; TrEntry_first_data(trie) = data_source; } else { TrData_next(data_source) = TrData_next(data_dest); if (data_dest == TrEntry_last_data(trie)) TrEntry_last_data(trie) = data_source; else TrData_previous(TrData_next(data_dest)) = data_source; TrData_next(data_dest) = data_source; } TrData_previous(data_source) = data_dest; return; } void trie_data_order_correction(void) { TrEntry trie = CURRENT_TRIE; TrData inserted_data = TrEntry_last_data(trie); TrData moved_data = TrData_previous(inserted_data); TrData moveto_data = TrData_previous(moved_data); while((moveto_data != TrData_previous(TrEntry_first_data(trie))) && (compare_label_nodes(moveto_data, inserted_data) == 1)) { if (compare_label_nodes(moveto_data, moved_data) == 2) moved_data = moveto_data; moveto_data = TrData_previous(moveto_data); } move_last_data_after(moveto_data); do { moveto_data = TrData_next(inserted_data); while(compare_label_nodes(moveto_data, moved_data) == 2) moveto_data = TrData_next(moveto_data); inserted_data = moved_data; moved_data = TrData_next(moved_data); if (moved_data != moveto_data) move_after(inserted_data, TrData_previous(moveto_data)); } while(moved_data); return; } static inline int compare_label_nodes(TrData data1, TrData data2) { YAP_Term t1 = TrNode_entry(TrData_leaf(data1)), t2 = TrNode_entry(TrData_leaf(data2)); YAP_Int i1 = atol(YAP_AtomName(YAP_AtomOfTerm(t1)) + 1), i2 = atol(YAP_AtomName(YAP_AtomOfTerm(t2)) + 1); if (i1 == i2) return 0; if (i1 > i2) return 1; return 2; }