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/**************************************************************/
/* ********************************************************** */
/* * * */
/* * TABLEAUS * */
/* * * */
/* * $Module: TABLEAU * */
/* * * */
/* * Copyright (C) 1998, 1999, 2000, 2001 * */
/* * MPI fuer Informatik * */
/* * * */
/* * This program is free software; you can redistribute * */
/* * it and/or modify it under the terms of the GNU * */
/* * General Public License as published by the Free * */
/* * Software Foundation; either version 2 of the License, * */
/* * or (at your option) any later version. * */
/* * * */
/* * This program is distributed in the hope that it will * */
/* * be useful, but WITHOUT ANY WARRANTY; without even * */
/* * the implied warranty of MERCHANTABILITY or FITNESS * */
/* * FOR A PARTICULAR PURPOSE. See the GNU General Public * */
/* * License for more details. * */
/* * * */
/* * You should have received a copy of the GNU General * */
/* * Public License along with this program; if not, write * */
/* * to the Free Software Foundation, Inc., 59 Temple * */
/* * Place, Suite 330, Boston, MA 02111-1307 USA * */
/* * * */
/* * * */
/* $Revision: 21527 $ * */
/* $State$ * */
/* $Date: 2005-04-24 21:10:28 -0700 (Sun, 24 Apr 2005) $ * */
/* $Author: duraid $ * */
/* * * */
/* * Contact: * */
/* * Christoph Weidenbach * */
/* * MPI fuer Informatik * */
/* * Stuhlsatzenhausweg 85 * */
/* * 66123 Saarbruecken * */
/* * Email: weidenb@mpi-sb.mpg.de * */
/* * Germany * */
/* * * */
/* ********************************************************** */
/**************************************************************/
/* $RCSfile$ */
#ifndef _TABLEAU_
#define _TABLEAU_
#include "list.h"
#include "clause.h"
typedef struct TABLEAU_HELP {
LIST Clauses; /* all clauses generated on the split level */
CLAUSE SplitClause; /* this levels split clause */
CLAUSE LeftSplitClause; /* first clause generated by split */
LIST RightSplitClauses; /* other clauses generated by split */
struct TABLEAU_HELP* LeftBranch; /* branch corresponding to first split clause */
struct TABLEAU_HELP* RightBranch; /* branch corresponding to other split clauses */
int Label;
} TABLEAU_NODE, *TABLEAU;
typedef struct {
TABLEAU *Path; /* An array of tableaux */
int Length;
int MaxLength;
} TABPATH_NODE, *TABPATH;
/* tableau output formats */
typedef enum { DAVINCI, XVCG } GRAPHFORMAT;
TABPATH tab_PathCreate(int, TABLEAU);
void tab_PathDelete(TABPATH);
BOOL tab_PathContainsClause(TABPATH, CLAUSE);
void tab_AddClauseOnItsLevel(CLAUSE, TABPATH);
void tab_AddSplitAtCursor(TABPATH, BOOL);
BOOL tab_IsClosed(TABLEAU);
TABLEAU tab_PruneClosedBranches(TABLEAU, LIST*);
int tab_Depth(TABLEAU);
void tab_SetSplitLevels(TABLEAU T);
TABLEAU tab_RemoveIncompleteSplits(TABLEAU, LIST*);
void tab_PathDelete(TABPATH);
void tab_Delete(TABLEAU);
void tab_ToClauseList(TABLEAU, LIST*);
void tab_GetEarliestEmptyClauses(TABLEAU, LIST*);
void tab_WriteTableau(TABLEAU, const char*, GRAPHFORMAT);
void tab_CheckEmpties(TABLEAU);
void tab_GetAllEmptyClauses(TABLEAU, LIST*);
void tab_LabelNodes(TABLEAU);
/* inline functions for tableau paths */
static __inline__ int tab_PathLength(TABPATH TabPath)
{
return TabPath->Length;
}
static __inline__ TABLEAU tab_PathNthNode(TABPATH TabPath, int n)
{
#ifdef CHECK
if (n > TabPath->MaxLength) {
misc_StartErrorReport();
misc_ErrorReport("\n In tab_PathNthNode:");
misc_ErrorReport(" Path length is %d,", tab_PathLength(TabPath));
misc_ErrorReport("\nnode %d was requested.\n", n);
misc_FinishErrorReport();
}
#endif
return TabPath->Path[n];
}
static __inline__ TABPATH tab_PathPush(TABLEAU Tab, TABPATH TabPath)
{
TabPath->Length++;
TabPath->Path[TabPath->Length] = Tab;
#ifdef CHECK
if (TabPath->Length > TabPath->MaxLength) {
misc_StartErrorReport();
misc_ErrorReport("\n In tab_PathPush: Maximum path length %d exceeded\n",
TabPath->MaxLength);
misc_FinishErrorReport();
}
#endif
return TabPath;
}
static __inline__ TABLEAU tab_EmptyTableau(void)
{
return (TABLEAU)NULL;
}
static __inline__ TABPATH tab_PathPop(TABPATH TabPath)
{
#ifdef CHECK
if (TabPath->Length <= 0) {
misc_StartErrorReport();
misc_ErrorReport("\n In tab_PathPop: Popping from empty path.\n");
misc_FinishErrorReport();
}
#endif
TabPath->Path[TabPath->Length--] = tab_EmptyTableau();
return TabPath;
}
static __inline__ BOOL tab_PathEmpty(TABPATH P)
{
return (tab_PathLength(P) == 0);
}
static __inline__ TABLEAU tab_CreateNode(void)
{
TABLEAU Node;
Node = (TABLEAU)memory_Malloc(sizeof(TABLEAU_NODE));
Node->RightBranch = (TABLEAU)NULL;
Node->LeftBranch = (TABLEAU)NULL;
Node->SplitClause = (CLAUSE)NULL;
Node->LeftSplitClause = (CLAUSE)NULL;
Node->RightSplitClauses = list_Nil();
Node->Clauses = list_Nil();
#ifdef USE_LABEL
Node->Label = 0;
#endif
return Node;
}
static __inline__ TABPATH tab_PathPrefix(int Level, TABPATH TabPath)
{
TabPath->Length = Level;
return TabPath;
}
static __inline__ TABLEAU tab_PathTop(TABPATH Path)
{
return tab_PathNthNode(Path, tab_PathLength(Path));
}
static __inline__ BOOL tab_IsEmpty(TABLEAU Tab)
{
return (Tab == tab_EmptyTableau());
}
static __inline__ TABLEAU tab_RightBranch(TABLEAU Tab)
{
return Tab->RightBranch;
}
static __inline__ TABLEAU tab_LeftBranch(TABLEAU Tab)
{
return Tab->LeftBranch;
}
static __inline__ void tab_SetRightBranch(TABLEAU Tab, TABLEAU SubTab)
{
Tab->RightBranch = SubTab;
}
static __inline__ void tab_SetLeftBranch(TABLEAU Tab, TABLEAU SubTab)
{
Tab->LeftBranch = SubTab;
}
static __inline__ BOOL tab_RightBranchIsEmpty(TABLEAU Tab)
{
return (Tab->RightBranch == tab_EmptyTableau());
}
static __inline__ BOOL tab_LeftBranchIsEmpty(TABLEAU Tab)
{
return (Tab->LeftBranch == tab_EmptyTableau());
}
static __inline__ CLAUSE tab_SplitClause(TABLEAU Tab)
{
return Tab->SplitClause;
}
static __inline__ void tab_SetSplitClause(TABLEAU Tab, CLAUSE C)
{
Tab->SplitClause = C;
}
static __inline__ BOOL tab_HasSplit(TABLEAU T)
{
return (tab_SplitClause(T) != clause_Null());
}
static __inline__ void tab_AddClause(CLAUSE C,TABLEAU T)
{
T->Clauses = list_Cons(C,T->Clauses);
}
static __inline__ LIST tab_Clauses(TABLEAU T)
{
return T->Clauses;
}
static __inline__ void tab_SetClauses(TABLEAU T, LIST Clauses)
{
T->Clauses = Clauses;
}
static __inline__ CLAUSE tab_LeftSplitClause(TABLEAU T)
{
return T->LeftSplitClause;
}
static __inline__ void tab_SetLeftSplitClause(TABLEAU T, CLAUSE C)
{
T->LeftSplitClause = C;
}
static __inline__ LIST tab_RightSplitClauses(TABLEAU T)
{
return T->RightSplitClauses;
}
static __inline__ void tab_SetRightSplitClauses(TABLEAU T, LIST L)
{
T->RightSplitClauses = L;
}
static __inline__ void tab_AddRightSplitClause(TABLEAU T, CLAUSE C)
{
T->RightSplitClauses = list_Cons(C, T->RightSplitClauses);
}
static __inline__ BOOL tab_IsLeaf(TABLEAU T)
{
return (tab_RightBranchIsEmpty(T) && tab_LeftBranchIsEmpty(T));
}
#endif
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