EXPORT unsigned STDCALL EnvGetDeffunctionWatch1(void* env, void* ptr)
{
return EnvGetDeffunctionWatch(env, ptr);
}
/****************************************************
NAME : AddDeffunction
DESCRIPTION : Adds a deffunction to the list of
deffunctions
INPUTS : 1) The symbolic name
2) The action expressions
3) The minimum number of arguments
4) The maximum number of arguments
(can be -1)
5) The number of local variables
6) A flag indicating if this is
a header call so that the
deffunction can be recursively
called
RETURNS : The new deffunction (NULL on errors)
SIDE EFFECTS : Deffunction structures allocated
NOTES : Assumes deffunction is not executing
****************************************************/
static DEFFUNCTION *AddDeffunction(
void *theEnv,
SYMBOL_HN *name,
EXPRESSION *actions,
int min,
int max,
int lvars,
int headerp)
{
DEFFUNCTION *dfuncPtr;
unsigned oldbusy;
#if DEBUGGING_FUNCTIONS
unsigned DFHadWatch = FALSE;
#endif
/*===============================================================*/
/* If the deffunction doesn't exist, create a new structure to */
/* contain it and add it to the List of deffunctions. Otherwise, */
/* use the existing structure and remove the pretty print form */
/* and interpretive code. */
/*===============================================================*/
dfuncPtr = (DEFFUNCTION *) EnvFindDeffunction(theEnv,ValueToString(name));
if (dfuncPtr == NULL)
{
dfuncPtr = get_struct(theEnv,deffunctionStruct);
InitializeConstructHeader(theEnv,"deffunction",(struct constructHeader *) dfuncPtr,name);
IncrementSymbolCount(name);
dfuncPtr->code = NULL;
dfuncPtr->minNumberOfParameters = min;
dfuncPtr->maxNumberOfParameters = max;
dfuncPtr->numberOfLocalVars = lvars;
dfuncPtr->busy = 0;
dfuncPtr->executing = 0;
}
else
{
#if DEBUGGING_FUNCTIONS
DFHadWatch = EnvGetDeffunctionWatch(theEnv,(void *) dfuncPtr);
#endif
dfuncPtr->minNumberOfParameters = min;
dfuncPtr->maxNumberOfParameters = max;
dfuncPtr->numberOfLocalVars = lvars;
oldbusy = dfuncPtr->busy;
ExpressionDeinstall(theEnv,dfuncPtr->code);
dfuncPtr->busy = oldbusy;
ReturnPackedExpression(theEnv,dfuncPtr->code);
dfuncPtr->code = NULL;
SetDeffunctionPPForm((void *) dfuncPtr,NULL);
/* =======================================
Remove the deffunction from the list so
that it can be added at the end
======================================= */
RemoveConstructFromModule(theEnv,(struct constructHeader *) dfuncPtr);
}
AddConstructToModule((struct constructHeader *) dfuncPtr);
/* ==================================
Install the new interpretive code.
================================== */
if (actions != NULL)
{
/* ===============================
If a deffunction is recursive,
do not increment its busy count
based on self-references
=============================== */
oldbusy = dfuncPtr->busy;
ExpressionInstall(theEnv,actions);
dfuncPtr->busy = oldbusy;
dfuncPtr->code = actions;
}
/* ===============================================================
Install the pretty print form if memory is not being conserved.
=============================================================== */
#if DEBUGGING_FUNCTIONS
EnvSetDeffunctionWatch(theEnv,DFHadWatch ? TRUE : DeffunctionData(theEnv)->WatchDeffunctions,(void *) dfuncPtr);
if ((EnvGetConserveMemory(theEnv) == FALSE) && (headerp == FALSE))
SetDeffunctionPPForm((void *) dfuncPtr,CopyPPBuffer(theEnv));
#endif
return(dfuncPtr);
}
bool Function::is_watched() {
if ( m_cobj )
return EnvGetDeffunctionWatch( m_environment.cobj(), m_cobj );
else
return false;
}
globle unsigned GetDeffunctionWatch(
void *dptr)
{
return EnvGetDeffunctionWatch(GetCurrentEnvironment(),dptr);
}
