rulecom.c

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   /*******************************************************/
   /*      "C" Language Integrated Production System      */
   /*                                                     */
   /*             CLIPS Version 6.30  10/19/06            */
   /*                                                     */
   /*                RULE COMMANDS MODULE                 */
   /*******************************************************/

/*************************************************************/
/* Purpose: Provides the matches command. Also provides the  */
/*   the developer commands show-joins and rule-complexity.  */
/*   Also provides the initialization routine which          */
/*   registers rule commands found in other modules.         */
/*                                                           */
/* Principal Programmer(s):                                  */
/*      Gary D. Riley                                        */
/*                                                           */
/* Contributing Programmer(s):                               */
/*                                                           */
/* Revision History:                                         */
/*                                                           */
/*      6.24: Removed CONFLICT_RESOLUTION_STRATEGIES         */
/*            INCREMENTAL_RESET, and LOGICAL_DEPENDENCIES    */
/*            compilation flags.                             */
/*                                                           */
/*            Renamed BOOLEAN macro type to intBool.         */
/*                                                           */
/*      6.30: Added support for hashed alpha memories.       */
/*                                                           */
/*            Added matches-count function.                  */
/*                                                           */
/*            Added get-join-hashing and set-join-hashing    */
/*            functions.                                     */
/*                                                           */
/*************************************************************/

#define _RULECOM_SOURCE_

#include <stdio.h>
#define _STDIO_INCLUDED_
#include <string.h>

#include "setup.h"

#if DEFRULE_CONSTRUCT

#include "argacces.h"
#include "constant.h"
#include "constrct.h"
#include "crstrtgy.h"
#include "engine.h"
#include "envrnmnt.h"
#include "evaluatn.h"
#include "extnfunc.h"
#include "incrrset.h"
#include "lgcldpnd.h"
#include "memalloc.h"
#include "pattern.h"
#include "reteutil.h"
#include "router.h"
#include "ruledlt.h"
#include "sysdep.h"
#include "watch.h"

#if BLOAD || BLOAD_AND_BSAVE || BLOAD_ONLY
#include "rulebin.h"
#endif

#include "rulecom.h"

/***************************************/
/* LOCAL INTERNAL FUNCTION DEFINITIONS */
/***************************************/

#if DEVELOPER
   static void                    ShowJoins(void *,void *);
#endif
   static int                     ListAlphaMatches(void *,struct joinNode *,int);
   static int                     ListBetaMatches(void *,struct joinNode *,int);
   static int                     ListBetaJoinActivity(void *,struct joinNode *,int,long long *,int);
   static void                    PrintMatchesMemory(void *,struct joinNode *,struct betaMemory *,int,int);
   
/****************************************************************/
/* DefruleCommands: Initializes defrule commands and functions. */
/****************************************************************/
globle void DefruleCommands(
  void *theEnv)
  {
#if ! RUN_TIME
   EnvDefineFunction2(theEnv,"run",'v', PTIEF RunCommand,"RunCommand", "*1i");
   EnvDefineFunction2(theEnv,"halt",'v', PTIEF HaltCommand,"HaltCommand","00");
   EnvDefineFunction2(theEnv,"focus",'b', PTIEF FocusCommand,"FocusCommand", "1*w");
   EnvDefineFunction2(theEnv,"clear-focus-stack",'v',PTIEF ClearFocusStackCommand,
                                       "ClearFocusStackCommand","00");
   EnvDefineFunction2(theEnv,"get-focus-stack",'m',PTIEF GetFocusStackFunction,
                                     "GetFocusStackFunction","00");
   EnvDefineFunction2(theEnv,"pop-focus",'w',PTIEF PopFocusFunction,
                               "PopFocusFunction","00");
   EnvDefineFunction2(theEnv,"get-focus",'w',PTIEF GetFocusFunction,
                               "GetFocusFunction","00");
#if DEBUGGING_FUNCTIONS
   EnvDefineFunction2(theEnv,"set-break",'v', PTIEF SetBreakCommand,
                               "SetBreakCommand","11w");
   EnvDefineFunction2(theEnv,"remove-break",'v', PTIEF RemoveBreakCommand,
                                  "RemoveBreakCommand", "*1w");
   EnvDefineFunction2(theEnv,"show-breaks",'v', PTIEF ShowBreaksCommand,
                                 "ShowBreaksCommand", "01w");
   EnvDefineFunction2(theEnv,"matches",'v',PTIEF MatchesCommand,"MatchesCommand","11w");
   EnvDefineFunction2(theEnv,"join-activity",'g',PTIEF JoinActivityCommand,"JoinActivityCommand","11w");
   EnvDefineFunction2(theEnv,"matches-count",'v',PTIEF MatchesCountCommand,"MatchesCountCommand","11w");
   EnvDefineFunction2(theEnv,"list-focus-stack",'v', PTIEF ListFocusStackCommand,
                                      "ListFocusStackCommand", "00");
   EnvDefineFunction2(theEnv,"dependencies", 'v', PTIEF DependenciesCommand,
                                   "DependenciesCommand", "11h");
   EnvDefineFunction2(theEnv,"dependents",   'v', PTIEF DependentsCommand,
                                   "DependentsCommand", "11h");
   EnvDefineFunction2(theEnv,"timetag",   'g', PTIEF TimetagFunction,
                                   "TimetagFunction", "11h");
#endif /* DEBUGGING_FUNCTIONS */

   EnvDefineFunction2(theEnv,"get-incremental-reset",'b',
                   GetIncrementalResetCommand,"GetIncrementalResetCommand","00");
   EnvDefineFunction2(theEnv,"set-incremental-reset",'b',
                   SetIncrementalResetCommand,"SetIncrementalResetCommand","11");

   EnvDefineFunction2(theEnv,"get-beta-memory-resizing",'b',
                   GetBetaMemoryResizingCommand,"GetBetaMemoryResizingCommand","00");
   EnvDefineFunction2(theEnv,"set-beta-memory-resizing",'b',
                   SetBetaMemoryResizingCommand,"SetBetaMemoryResizingCommand","11");

   EnvDefineFunction2(theEnv,"get-strategy", 'w', PTIEF GetStrategyCommand,  "GetStrategyCommand", "00");
   EnvDefineFunction2(theEnv,"set-strategy", 'w', PTIEF SetStrategyCommand,  "SetStrategyCommand", "11w");

#if DEVELOPER && (! BLOAD_ONLY)
   EnvDefineFunction2(theEnv,"rule-complexity",'l', PTIEF RuleComplexityCommand,"RuleComplexityCommand", "11w");
   EnvDefineFunction2(theEnv,"show-joins",   'v', PTIEF ShowJoinsCommand,    "ShowJoinsCommand", "11w");
   EnvDefineFunction2(theEnv,"show-aht",   'v', PTIEF ShowAlphaHashTable,    "ShowAlphaHashTable", "00");
#if DEBUGGING_FUNCTIONS
   AddWatchItem(theEnv,"rule-analysis",0,&DefruleData(theEnv)->WatchRuleAnalysis,0,NULL,NULL);
#endif
#endif /* DEVELOPER && (! BLOAD_ONLY) */

#else
#if MAC_MCW || IBM_MCW || MAC_XCD
#pragma unused(theEnv)
#endif
#endif /* ! RUN_TIME */
  }

/***********************************************/
/* EnvGetBetaMemoryResizing: C access routine  */
/*   for the get-beta-memory-resizing command. */
/***********************************************/
globle intBool EnvGetBetaMemoryResizing(
  void *theEnv)
  {   
   return(DefruleData(theEnv)->BetaMemoryResizingFlag);
  }

/***********************************************/
/* EnvSetBetaMemoryResizing: C access routine  */
/*   for the set-beta-memory-resizing command. */
/***********************************************/
globle intBool EnvSetBetaMemoryResizing(
  void *theEnv,
  int value)
  {
   int ov;

   ov = DefruleData(theEnv)->BetaMemoryResizingFlag;

   DefruleData(theEnv)->BetaMemoryResizingFlag = value;

   return(ov);
  }

/****************************************************/
/* SetBetaMemoryResizingCommand: H/L access routine */
/*   for the set-beta-memory-resizing command.      */
/****************************************************/
globle int SetBetaMemoryResizingCommand(
  void *theEnv)
  {
   int oldValue;
   DATA_OBJECT argPtr;

   oldValue = EnvGetBetaMemoryResizing(theEnv);

   /*============================================*/
   /* Check for the correct number of arguments. */
   /*============================================*/

   if (EnvArgCountCheck(theEnv,"set-beta-memory-resizing",EXACTLY,1) == -1)
     { return(oldValue); }

   /*=================================================*/
   /* The symbol FALSE disables beta memory resizing. */
   /* Any other value enables beta memory resizing.   */
   /*=================================================*/

   EnvRtnUnknown(theEnv,1,&argPtr);

   if ((argPtr.value == EnvFalseSymbol(theEnv)) && (argPtr.type == SYMBOL))
     { EnvSetBetaMemoryResizing(theEnv,FALSE); }
   else
     { EnvSetBetaMemoryResizing(theEnv,TRUE); }

   /*=======================*/
   /* Return the old value. */
   /*=======================*/

   return(oldValue);
  }

/****************************************************/
/* GetBetaMemoryResizingCommand: H/L access routine */
/*   for the get-beta-memory-resizing command.      */
/****************************************************/
globle int GetBetaMemoryResizingCommand(
  void *theEnv)
  {
   int oldValue;

   oldValue = EnvGetBetaMemoryResizing(theEnv);

   if (EnvArgCountCheck(theEnv,"get-beta-memory-resizing",EXACTLY,0) == -1)
     { return(oldValue); }

   return(oldValue);
  }

#if DEBUGGING_FUNCTIONS

/****************************************/
/* MatchesCommand: H/L access routine   */
/*   for the matches command.           */
/****************************************/
globle void MatchesCommand(
  void *theEnv)
  {
   char *ruleName;
   void *rulePtr;

   ruleName = GetConstructName(theEnv,"matches","rule name");
   if (ruleName == NULL) return;

   rulePtr = EnvFindDefrule(theEnv,ruleName);
   if (rulePtr == NULL)
     {
      CantFindItemErrorMessage(theEnv,"defrule",ruleName);
      return;
     }

   EnvMatches(theEnv,rulePtr);
  }

/********************************/
/* EnvMatches: C access routine */
/*   for the matches command.   */
/********************************/
globle intBool EnvMatches(
  void *theEnv,
  void *theRule)
  {
   struct defrule *rulePtr, *tmpPtr;
   struct joinNode *lastJoin;
   ACTIVATION *agendaPtr;
   int flag;

   /*=================================================*/
   /* Loop through each of the disjuncts for the rule */
   /*=================================================*/

   for (rulePtr = (struct defrule *) theRule, tmpPtr = rulePtr;
        rulePtr != NULL;
        rulePtr = rulePtr->disjunct)
     {
      /*======================================*/
      /* Determine the last join in the rule. */
      /*======================================*/

      lastJoin = rulePtr->lastJoin;

      /*========================================*/
      /* List the alpha memory partial matches. */
      /*========================================*/

      ListAlphaMatches(theEnv,lastJoin->lastLevel,0);

      /*=======================================*/
      /* List the beta memory partial matches. */
      /*=======================================*/

      ListBetaMatches(theEnv,lastJoin,1);
     }

   /*===================*/
   /* List activations. */
   /*===================*/

   rulePtr = tmpPtr;
   EnvPrintRouter(theEnv,WDISPLAY,"Activations\n");
   flag = 1;
   for (agendaPtr = (struct activation *) EnvGetNextActivation(theEnv,NULL);
        agendaPtr != NULL;
        agendaPtr = (struct activation *) EnvGetNextActivation(theEnv,agendaPtr))
     {
      if (GetHaltExecution(theEnv) == TRUE) return(TRUE);

      if (((struct activation *) agendaPtr)->theRule->header.name == rulePtr->header.name)
        {
         flag = 0;
         PrintPartialMatch(theEnv,WDISPLAY,GetActivationBasis(agendaPtr));
         EnvPrintRouter(theEnv,WDISPLAY,"\n");
        }
     }

   if (flag) EnvPrintRouter(theEnv,WDISPLAY," None\n");

   return(TRUE);
  }

/*********************/
/* ListAlphaMatches: */
/*********************/
static int ListAlphaMatches(
  void *theEnv,
  struct joinNode *theJoin,
  int priorPatterns)
  {
   struct alphaMemoryHash *listOfHashNodes;
   struct partialMatch *listOfMatches;
   int flag;

   if (theJoin == NULL) 
     { return(priorPatterns); }
     
   if (theJoin->rightSideEntryStructure == NULL)
     { 
      priorPatterns++;

      EnvPrintRouter(theEnv,WDISPLAY,"Matches for Pattern ");