globle int ParseDeftemplate(
void *theEnv,
char *readSource)
{
#if (MAC_MCW || IBM_MCW) && (RUN_TIME || BLOAD_ONLY)
#pragma unused(readSource)
#endif
#if (! RUN_TIME) && (! BLOAD_ONLY)
SYMBOL_HN *deftemplateName;
struct deftemplate *newDeftemplate;
struct templateSlot *slots;
struct token inputToken;
/*================================================*/
/* Initialize pretty print and error information. */
/*================================================*/
DeftemplateData(theEnv)->DeftemplateError = FALSE;
SetPPBufferStatus(theEnv,ON);
FlushPPBuffer(theEnv);
SavePPBuffer(theEnv,"(deftemplate ");
/*==============================================================*/
/* Deftemplates can not be added when a binary image is loaded. */
/*==============================================================*/
#if BLOAD || BLOAD_AND_BSAVE
if ((Bloaded(theEnv) == TRUE) && (! ConstructData(theEnv)->CheckSyntaxMode))
{
CannotLoadWithBloadMessage(theEnv,"deftemplate");
return(TRUE);
}
#endif
/*=======================================================*/
/* Parse the name and comment fields of the deftemplate. */
/*=======================================================*/
#if DEBUGGING_FUNCTIONS
DeftemplateData(theEnv)->DeletedTemplateDebugFlags = 0;
#endif
deftemplateName = GetConstructNameAndComment(theEnv,readSource,&inputToken,"deftemplate",
EnvFindDeftemplate,EnvUndeftemplate,"%",
TRUE,TRUE,DEFMODULE_CONSTRUCT);
if (deftemplateName == NULL) return(TRUE);
if (ReservedPatternSymbol(theEnv,ValueToString(deftemplateName),"deftemplate"))
{
ReservedPatternSymbolErrorMsg(theEnv,ValueToString(deftemplateName),"a deftemplate name");
return(TRUE);
}
/*===========================================*/
/* Parse the slot fields of the deftemplate. */
/*===========================================*/
slots = SlotDeclarations(theEnv,readSource,&inputToken);
if (DeftemplateData(theEnv)->DeftemplateError == TRUE) return(TRUE);
/*==============================================*/
/* If we're only checking syntax, don't add the */
/* successfully parsed deftemplate to the KB. */
/*==============================================*/
if (ConstructData(theEnv)->CheckSyntaxMode)
{
ReturnSlots(theEnv,slots);
return(FALSE);
}
/*=====================================*/
/* Create a new deftemplate structure. */
/*=====================================*/
newDeftemplate = get_struct(theEnv,deftemplate);
newDeftemplate->header.name = deftemplateName;
newDeftemplate->header.next = NULL;
newDeftemplate->header.usrData = NULL;
newDeftemplate->slotList = slots;
newDeftemplate->implied = FALSE;
newDeftemplate->numberOfSlots = 0;
newDeftemplate->busyCount = 0;
newDeftemplate->watch = 0;
newDeftemplate->inScope = TRUE;
newDeftemplate->patternNetwork = NULL;
newDeftemplate->factList = NULL;
newDeftemplate->lastFact = NULL;
newDeftemplate->header.whichModule = (struct defmoduleItemHeader *)
GetModuleItem(theEnv,NULL,DeftemplateData(theEnv)->DeftemplateModuleIndex);
/*================================*/
/* Determine the number of slots. */
/*================================*/
while (slots != NULL)
{
newDeftemplate->numberOfSlots++;
slots = slots->next;
}
/*====================================*/
/* Store pretty print representation. */
/*====================================*/
if (EnvGetConserveMemory(theEnv) == TRUE)
{ newDeftemplate->header.ppForm = NULL; }
else
{ newDeftemplate->header.ppForm = CopyPPBuffer(theEnv); }
/*=======================================================================*/
/* If a template is redefined, then we want to restore its watch status. */
/*=======================================================================*/
#if DEBUGGING_FUNCTIONS
if ((BitwiseTest(DeftemplateData(theEnv)->DeletedTemplateDebugFlags,0)) || EnvGetWatchItem(theEnv,"facts"))
{ EnvSetDeftemplateWatch(theEnv,ON,(void *) newDeftemplate); }
#endif
/*==============================================*/
/* Add deftemplate to the list of deftemplates. */
/*==============================================*/
AddConstructToModule(&newDeftemplate->header);
InstallDeftemplate(theEnv,newDeftemplate);
#else
#if MAC_MCW || IBM_MCW || MAC_XCD
#pragma unused(theEnv)
#endif
#endif
return(FALSE);
}
globle int ParseDefrule(
void *theEnv,
const char *readSource)
{
#if (! RUN_TIME) && (! BLOAD_ONLY)
SYMBOL_HN *ruleName;
struct lhsParseNode *theLHS;
struct expr *actions;
struct token theToken;
struct defrule *topDisjunct, *tempPtr;
struct defruleModule *theModuleItem;
int error;
/*================================================*/
/* Flush the buffer which stores the pretty print */
/* representation for a rule. Add the already */
/* parsed keyword defrule to this buffer. */
/*================================================*/
SetPPBufferStatus(theEnv,ON);
FlushPPBuffer(theEnv);
SavePPBuffer(theEnv,"(defrule ");
/*=========================================================*/
/* Rules cannot be loaded when a binary load is in effect. */
/*=========================================================*/
#if BLOAD || BLOAD_ONLY || BLOAD_AND_BSAVE
if ((Bloaded(theEnv) == TRUE) && (! ConstructData(theEnv)->CheckSyntaxMode))
{
CannotLoadWithBloadMessage(theEnv,"defrule");
return(TRUE);
}
#endif
/*================================================*/
/* Parse the name and comment fields of the rule, */
/* deleting the rule if it already exists. */
/*================================================*/
#if DEBUGGING_FUNCTIONS
DefruleData(theEnv)->DeletedRuleDebugFlags = 0;
#endif
ruleName = GetConstructNameAndComment(theEnv,readSource,&theToken,"defrule",
EnvFindDefruleInModule,EnvUndefrule,"*",FALSE,
TRUE,TRUE,FALSE);
if (ruleName == NULL) return(TRUE);
/*============================*/
/* Parse the LHS of the rule. */
/*============================*/
theLHS = ParseRuleLHS(theEnv,readSource,&theToken,ValueToString(ruleName),&error);
if (error)
{
ReturnPackedExpression(theEnv,PatternData(theEnv)->SalienceExpression);
PatternData(theEnv)->SalienceExpression = NULL;
return(TRUE);
}
/*============================*/
/* Parse the RHS of the rule. */
/*============================*/
ClearParsedBindNames(theEnv);
ExpressionData(theEnv)->ReturnContext = TRUE;
actions = ParseRuleRHS(theEnv,readSource);
if (actions == NULL)
{
ReturnPackedExpression(theEnv,PatternData(theEnv)->SalienceExpression);
PatternData(theEnv)->SalienceExpression = NULL;
ReturnLHSParseNodes(theEnv,theLHS);
return(TRUE);
}
/*=======================*/
/* Process the rule LHS. */
/*=======================*/
topDisjunct = ProcessRuleLHS(theEnv,theLHS,actions,ruleName,&error);
ReturnExpression(theEnv,actions);
ClearParsedBindNames(theEnv);
ReturnLHSParseNodes(theEnv,theLHS);
if (error)
{
ReturnPackedExpression(theEnv,PatternData(theEnv)->SalienceExpression);
PatternData(theEnv)->SalienceExpression = NULL;
return(TRUE);
}
/*==============================================*/
/* If we're only checking syntax, don't add the */
/* successfully parsed defrule to the KB. */
/*==============================================*/
if (ConstructData(theEnv)->CheckSyntaxMode)
{
ReturnPackedExpression(theEnv,PatternData(theEnv)->SalienceExpression);
PatternData(theEnv)->SalienceExpression = NULL;
return(FALSE);
}
PatternData(theEnv)->SalienceExpression = NULL;
/*======================================*/
/* Save the nice printout of the rules. */
/*======================================*/
SavePPBuffer(theEnv,"\n");
if (EnvGetConserveMemory(theEnv) == TRUE)
{ topDisjunct->header.ppForm = NULL; }
else
{ topDisjunct->header.ppForm = CopyPPBuffer(theEnv); }
/*=======================================*/
/* Store a pointer to the rule's module. */
/*=======================================*/
theModuleItem = (struct defruleModule *)
GetModuleItem(theEnv,NULL,FindModuleItem(theEnv,"defrule")->moduleIndex);
for (tempPtr = topDisjunct; tempPtr != NULL; tempPtr = tempPtr->disjunct)
{
tempPtr->header.whichModule = (struct defmoduleItemHeader *) theModuleItem;
tempPtr->header.ppForm = topDisjunct->header.ppForm;
}
/*===============================================*/
/* Rule completely parsed. Add to list of rules. */
/*===============================================*/
AddToDefruleList(topDisjunct);
/*========================================================================*/
/* If a rule is redefined, then we want to restore its breakpoint status. */
/*========================================================================*/
#if DEBUGGING_FUNCTIONS
if (BitwiseTest(DefruleData(theEnv)->DeletedRuleDebugFlags,0))
{ EnvSetBreak(theEnv,topDisjunct); }
if (BitwiseTest(DefruleData(theEnv)->DeletedRuleDebugFlags,1) || EnvGetWatchItem(theEnv,"activations"))
{ EnvSetDefruleWatchActivations(theEnv,ON,(void *) topDisjunct); }
if (BitwiseTest(DefruleData(theEnv)->DeletedRuleDebugFlags,2) || EnvGetWatchItem(theEnv,"rules"))
{ EnvSetDefruleWatchFirings(theEnv,ON,(void *) topDisjunct); }
#endif
/*================================*/
/* Perform the incremental reset. */
/*================================*/
IncrementalReset(theEnv,topDisjunct);
/*=============================================*/
/* Return FALSE to indicate no errors occured. */
/*=============================================*/
#endif
return(FALSE);
}