static struct templateSlot *DefinedSlots(
void *theEnv,
char *readSource,
SYMBOL_HN *slotName,
int multifieldSlot,
struct token *inputToken)
{
struct templateSlot *newSlot;
struct expr *defaultList;
int defaultFound = FALSE;
int noneSpecified, deriveSpecified;
CONSTRAINT_PARSE_RECORD parsedConstraints;
/*===========================*/
/* Build the slot container. */
/*===========================*/
newSlot = get_struct(theEnv,templateSlot);
newSlot->slotName = slotName;
newSlot->defaultList = NULL;
newSlot->constraints = GetConstraintRecord(theEnv);
if (multifieldSlot)
{ newSlot->constraints->multifieldsAllowed = TRUE; }
newSlot->multislot = multifieldSlot;
newSlot->noDefault = FALSE;
newSlot->defaultPresent = FALSE;
newSlot->defaultDynamic = FALSE;
newSlot->next = NULL;
/*========================================*/
/* Parse the primitive slot if it exists. */
/*========================================*/
InitializeConstraintParseRecord(&parsedConstraints);
GetToken(theEnv,readSource,inputToken);
while (inputToken->type != RPAREN)
{
PPBackup(theEnv);
SavePPBuffer(theEnv," ");
SavePPBuffer(theEnv,inputToken->printForm);
/*================================================*/
/* Slot attributes begin with a left parenthesis. */
/*================================================*/
if (inputToken->type != LPAREN)
{
SyntaxErrorMessage(theEnv,"deftemplate");
ReturnSlots(theEnv,newSlot);
DeftemplateData(theEnv)->DeftemplateError = TRUE;
return(NULL);
}
/*=============================================*/
/* The name of the attribute must be a symbol. */
/*=============================================*/
GetToken(theEnv,readSource,inputToken);
if (inputToken->type != SYMBOL)
{
SyntaxErrorMessage(theEnv,"deftemplate");
ReturnSlots(theEnv,newSlot);
DeftemplateData(theEnv)->DeftemplateError = TRUE;
return(NULL);
}
/*================================================================*/
/* Determine if the attribute is one of the standard constraints. */
/*================================================================*/
if (StandardConstraint(ValueToString(inputToken->value)))
{
if (ParseStandardConstraint(theEnv,readSource,(ValueToString(inputToken->value)),
newSlot->constraints,&parsedConstraints,
multifieldSlot) == FALSE)
{
DeftemplateData(theEnv)->DeftemplateError = TRUE;
ReturnSlots(theEnv,newSlot);
return(NULL);
}
}
/*=================================================*/
/* else if the attribute is the default attribute, */
/* then get the default list for this slot. */
/*=================================================*/
else if ((strcmp(ValueToString(inputToken->value),"default") == 0) ||
(strcmp(ValueToString(inputToken->value),"default-dynamic") == 0))
{
/*======================================================*/
/* Check to see if the default has already been parsed. */
/*======================================================*/
if (defaultFound)
{
AlreadyParsedErrorMessage(theEnv,"default attribute",NULL);
DeftemplateData(theEnv)->DeftemplateError = TRUE;
ReturnSlots(theEnv,newSlot);
return(NULL);
}
newSlot->noDefault = FALSE;
/*=====================================================*/
/* Determine whether the default is dynamic or static. */
/*=====================================================*/
if (strcmp(ValueToString(inputToken->value),"default") == 0)
{
newSlot->defaultPresent = TRUE;
newSlot->defaultDynamic = FALSE;
}
else
{
newSlot->defaultPresent = FALSE;
newSlot->defaultDynamic = TRUE;
}
/*===================================*/
/* Parse the list of default values. */
/*===================================*/
defaultList = ParseDefault(theEnv,readSource,multifieldSlot,(int) newSlot->defaultDynamic,
TRUE,&noneSpecified,&deriveSpecified,&DeftemplateData(theEnv)->DeftemplateError);
if (DeftemplateData(theEnv)->DeftemplateError == TRUE)
{
ReturnSlots(theEnv,newSlot);
return(NULL);
}
/*==================================*/
/* Store the default with the slot. */
/*==================================*/
defaultFound = TRUE;
if (deriveSpecified) newSlot->defaultPresent = FALSE;
else if (noneSpecified)
{
newSlot->noDefault = TRUE;
newSlot->defaultPresent = FALSE;
}
newSlot->defaultList = defaultList;
}
/*============================================*/
/* Otherwise the attribute is an invalid one. */
/*============================================*/
else
{
SyntaxErrorMessage(theEnv,"slot attributes");
ReturnSlots(theEnv,newSlot);
DeftemplateData(theEnv)->DeftemplateError = TRUE;
return(NULL);
}
/*===================================*/
/* Begin parsing the next attribute. */
/*===================================*/
GetToken(theEnv,readSource,inputToken);
}
/*============================*/
/* Return the attribute list. */
/*============================*/
return(newSlot);
}
/************************************************************
NAME : ParseSlot
DESCRIPTION : Parses slot definitions for a
defclass statement
INPUTS : 1) The logical name of the input source
2) The current slot list
3) The class precedence list for the class
to which this slot is being attached
(used to find facets for composite slots)
4) A flag indicating if this is a multifield
slot or not
5) A flag indicating if the type of slot
(single or multi) was explicitly
specified or not
RETURNS : The address of the list of slots,
NULL if there was an error
SIDE EFFECTS : The slot list is allocated
NOTES : Assumes "(slot" has already been parsed.
************************************************************/
globle TEMP_SLOT_LINK *ParseSlot(
void *theEnv,
EXEC_STATUS,
char *readSource,
TEMP_SLOT_LINK *slist,
PACKED_CLASS_LINKS *preclist,
int multiSlot,
int fieldSpecified)
{
SLOT_DESC *slot;
CONSTRAINT_PARSE_RECORD parsedConstraint;
char specbits[2];
int rtnCode;
SYMBOL_HN *newOverrideMsg;
/* ===============================================================
Bits in specbits are when slot qualifiers are specified so that
duplicate or conflicting qualifiers can be detected.
Shared/local bit-0
Single/multiple bit-1
Read-only/Read-write/Initialize-Only bit-2
Inherit/No-inherit bit-3
Composite/Exclusive bit-4
Reactive/Nonreactive bit-5
Default bit-6
Default-dynamic bit-7
Visibility bit-8
Override-message bit-9
=============================================================== */
SavePPBuffer(theEnv,execStatus," ");
specbits[0] = specbits[1] = '\0';
GetToken(theEnv,execStatus,readSource,&DefclassData(theEnv,execStatus)->ObjectParseToken);
if (GetType(DefclassData(theEnv,execStatus)->ObjectParseToken) != SYMBOL)
{
DeleteSlots(theEnv,execStatus,slist);
SyntaxErrorMessage(theEnv,execStatus,"defclass slot");
return(NULL);
}
if ((DefclassData(theEnv,execStatus)->ObjectParseToken.value == (void *) DefclassData(theEnv,execStatus)->ISA_SYMBOL) ||
(DefclassData(theEnv,execStatus)->ObjectParseToken.value == (void *) DefclassData(theEnv,execStatus)->NAME_SYMBOL))
{
DeleteSlots(theEnv,execStatus,slist);
SyntaxErrorMessage(theEnv,execStatus,"defclass slot");
return(NULL);
}
slot = NewSlot(theEnv,execStatus,(SYMBOL_HN *) GetValue(DefclassData(theEnv,execStatus)->ObjectParseToken));
slist = InsertSlot(theEnv,execStatus,slist,slot);
if (slist == NULL)
return(NULL);
if (multiSlot)
slot->multiple = TRUE;
if (fieldSpecified)
SetBitMap(specbits,FIELD_BIT);
GetToken(theEnv,execStatus,readSource,&DefclassData(theEnv,execStatus)->ObjectParseToken);
IncrementIndentDepth(theEnv,execStatus,3);
InitializeConstraintParseRecord(&parsedConstraint);
while (GetType(DefclassData(theEnv,execStatus)->ObjectParseToken) == LPAREN)
{
PPBackup(theEnv,execStatus);
PPCRAndIndent(theEnv,execStatus);
SavePPBuffer(theEnv,execStatus,"(");
GetToken(theEnv,execStatus,readSource,&DefclassData(theEnv,execStatus)->ObjectParseToken);
if (GetType(DefclassData(theEnv,execStatus)->ObjectParseToken) != SYMBOL)
{
SyntaxErrorMessage(theEnv,execStatus,"defclass slot");
goto ParseSlotError;
}
else if (strcmp(DOToString(DefclassData(theEnv,execStatus)->ObjectParseToken),DEFAULT_FACET) == 0)
{
if (ParseDefaultFacet(theEnv,execStatus,readSource,specbits,slot) == FALSE)
goto ParseSlotError;
}
else if (strcmp(DOToString(DefclassData(theEnv,execStatus)->ObjectParseToken),DYNAMIC_FACET) == 0)
{
SetBitMap(specbits,DEFAULT_DYNAMIC_BIT);
if (ParseDefaultFacet(theEnv,execStatus,readSource,specbits,slot) == FALSE)
goto ParseSlotError;
}
else if (strcmp(DOToString(DefclassData(theEnv,execStatus)->ObjectParseToken),ACCESS_FACET) == 0)
{
rtnCode = ParseSimpleFacet(theEnv,execStatus,readSource,specbits,ACCESS_FACET,ACCESS_BIT,
SLOT_RDWRT_RLN,SLOT_RDONLY_RLN,SLOT_INIT_RLN,
NULL,NULL);
if (rtnCode == -1)
goto ParseSlotError;
else if (rtnCode == 1)
slot->noWrite = 1;
else if (rtnCode == 2)
slot->initializeOnly = 1;
}
else if (strcmp(DOToString(DefclassData(theEnv,execStatus)->ObjectParseToken),STORAGE_FACET) == 0)
{
rtnCode = ParseSimpleFacet(theEnv,execStatus,readSource,specbits,STORAGE_FACET,STORAGE_BIT,
SLOT_LOCAL_RLN,SLOT_SHARE_RLN,NULL,NULL,NULL);
if (rtnCode == -1)
goto ParseSlotError;
slot->shared = rtnCode;
}
else if (strcmp(DOToString(DefclassData(theEnv,execStatus)->ObjectParseToken),PROPAGATION_FACET) == 0)
{
rtnCode = ParseSimpleFacet(theEnv,execStatus,readSource,specbits,PROPAGATION_FACET,PROPAGATION_BIT,
SLOT_INH_RLN,SLOT_NO_INH_RLN,NULL,NULL,NULL);
if (rtnCode == -1)
goto ParseSlotError;
slot->noInherit = rtnCode;
}
else if (strcmp(DOToString(DefclassData(theEnv,execStatus)->ObjectParseToken),SOURCE_FACET) == 0)
{
rtnCode = ParseSimpleFacet(theEnv,execStatus,readSource,specbits,SOURCE_FACET,SOURCE_BIT,
SLOT_EXCLUSIVE_RLN,SLOT_COMPOSITE_RLN,NULL,NULL,NULL);
if (rtnCode == -1)
goto ParseSlotError;
slot->composite = rtnCode;
}
#if DEFRULE_CONSTRUCT
else if (strcmp(DOToString(DefclassData(theEnv,execStatus)->ObjectParseToken),MATCH_FACET) == 0)
{
rtnCode = ParseSimpleFacet(theEnv,execStatus,readSource,specbits,MATCH_FACET,MATCH_BIT,
SLOT_NONREACTIVE_RLN,SLOT_REACTIVE_RLN,NULL,NULL,NULL);
if (rtnCode == -1)
goto ParseSlotError;
slot->reactive = rtnCode;
}
#endif
else if (strcmp(DOToString(DefclassData(theEnv,execStatus)->ObjectParseToken),VISIBILITY_FACET) == 0)
{
rtnCode = ParseSimpleFacet(theEnv,execStatus,readSource,specbits,VISIBILITY_FACET,VISIBILITY_BIT,
SLOT_PRIVATE_RLN,SLOT_PUBLIC_RLN,NULL,NULL,NULL);
if (rtnCode == -1)
goto ParseSlotError;
slot->publicVisibility = rtnCode;
}
else if (strcmp(DOToString(DefclassData(theEnv,execStatus)->ObjectParseToken),CREATE_ACCESSOR_FACET) == 0)
{
rtnCode = ParseSimpleFacet(theEnv,execStatus,readSource,specbits,CREATE_ACCESSOR_FACET,
CREATE_ACCESSOR_BIT,
SLOT_READ_RLN,SLOT_WRITE_RLN,SLOT_RDWRT_RLN,
SLOT_NONE_RLN,NULL);
if (rtnCode == -1)
goto ParseSlotError;
if ((rtnCode == 0) || (rtnCode == 2))
slot->createReadAccessor = TRUE;
if ((rtnCode == 1) || (rtnCode == 2))
slot->createWriteAccessor = TRUE;
}
else if (strcmp(DOToString(DefclassData(theEnv,execStatus)->ObjectParseToken),OVERRIDE_MSG_FACET) == 0)
{
rtnCode = ParseSimpleFacet(theEnv,execStatus,readSource,specbits,OVERRIDE_MSG_FACET,OVERRIDE_MSG_BIT,
NULL,NULL,NULL,SLOT_DEFAULT_RLN,&newOverrideMsg);
if (rtnCode == -1)
goto ParseSlotError;
if (rtnCode == 4)
{
DecrementSymbolCount(theEnv,execStatus,slot->overrideMessage);
slot->overrideMessage = newOverrideMsg;
IncrementSymbolCount(slot->overrideMessage);
}
slot->overrideMessageSpecified = TRUE;
}
else if (StandardConstraint(DOToString(DefclassData(theEnv,execStatus)->ObjectParseToken)))
{
if (ParseStandardConstraint(theEnv,execStatus,readSource,DOToString(DefclassData(theEnv,execStatus)->ObjectParseToken),
slot->constraint,&parsedConstraint,TRUE) == FALSE)
goto ParseSlotError;
}
else
{
SyntaxErrorMessage(theEnv,execStatus,"defclass slot");
goto ParseSlotError;
}
GetToken(theEnv,execStatus,readSource,&DefclassData(theEnv,execStatus)->ObjectParseToken);
}
if (GetType(DefclassData(theEnv,execStatus)->ObjectParseToken) != RPAREN)
{
SyntaxErrorMessage(theEnv,execStatus,"defclass slot");
goto ParseSlotError;
}
if (DefclassData(theEnv,execStatus)->ClassDefaultsMode == CONVENIENCE_MODE)
{
if (! TestBitMap(specbits,CREATE_ACCESSOR_BIT))
{
slot->createReadAccessor = TRUE;
if (! slot->noWrite)
{ slot->createWriteAccessor = TRUE; }
}
}
if (slot->composite)
BuildCompositeFacets(theEnv,execStatus,slot,preclist,specbits,&parsedConstraint);
if (CheckForFacetConflicts(theEnv,execStatus,slot,&parsedConstraint) == FALSE)
goto ParseSlotError;
if (CheckConstraintParseConflicts(theEnv,execStatus,slot->constraint) == FALSE)
goto ParseSlotError;
if (EvaluateSlotDefaultValue(theEnv,execStatus,slot,specbits) == FALSE)
goto ParseSlotError;
if ((slot->dynamicDefault == 0) && (slot->noWrite == 1) &&
(slot->initializeOnly == 0))
slot->shared = 1;
slot->constraint = AddConstraint(theEnv,execStatus,slot->constraint);
DecrementIndentDepth(theEnv,execStatus,3);
return(slist);
ParseSlotError:
DecrementIndentDepth(theEnv,execStatus,3);
DeleteSlots(theEnv,execStatus,slist);
return(NULL);
}
