moduldef.c

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  }

/******************************************************/
/* CreateMainModule: Creates the default MAIN module. */
/******************************************************/
globle void CreateMainModule(
  void *theEnv)
  {
   struct defmodule *newDefmodule;
   struct moduleItem *theItem;
   int i;
   struct defmoduleItemHeader *theHeader;

   /*=======================================*/
   /* Allocate the defmodule data structure */
   /* and name it the MAIN module.          */
   /*=======================================*/

   newDefmodule = get_struct(theEnv,defmodule);
   newDefmodule->name = (SYMBOL_HN *) EnvAddSymbol(theEnv,"MAIN");
   IncrementSymbolCount(newDefmodule->name);
   newDefmodule->next = NULL;
   newDefmodule->ppForm = NULL;
   newDefmodule->importList = NULL;
   newDefmodule->exportList = NULL;
   newDefmodule->bsaveID = 0L;
   newDefmodule->usrData = NULL;

   /*==================================*/
   /* Initialize the array for storing */
   /* the module's construct lists.    */
   /*==================================*/

   if (DefmoduleData(theEnv)->NumberOfModuleItems == 0) newDefmodule->itemsArray = NULL;
   else
     {
      newDefmodule->itemsArray = (struct defmoduleItemHeader **)
                                 gm2(theEnv,sizeof(void *) * DefmoduleData(theEnv)->NumberOfModuleItems);
      for (i = 0, theItem = DefmoduleData(theEnv)->ListOfModuleItems;
           (i < DefmoduleData(theEnv)->NumberOfModuleItems) && (theItem != NULL);
           i++, theItem = theItem->next)
        {
         if (theItem->allocateFunction == NULL)
           { newDefmodule->itemsArray[i] = NULL; }
         else
           {
            newDefmodule->itemsArray[i] = (struct defmoduleItemHeader *)
                                          (*theItem->allocateFunction)(theEnv);
            theHeader = (struct defmoduleItemHeader *) newDefmodule->itemsArray[i];
            theHeader->theModule = newDefmodule;
            theHeader->firstItem = NULL;
            theHeader->lastItem = NULL;
           }
        }
     }

   /*=======================================*/
   /* Add the module to the list of modules */
   /* and make it the current module.       */
   /*=======================================*/

#if (! BLOAD_ONLY) && (! RUN_TIME) && DEFMODULE_CONSTRUCT
   SetNumberOfDefmodules(theEnv,1L);
#endif

   DefmoduleData(theEnv)->LastDefmodule = newDefmodule;
   DefmoduleData(theEnv)->ListOfDefmodules = newDefmodule;
   EnvSetCurrentModule(theEnv,(void *) newDefmodule);
  }

/*********************************************************************/
/* SetListOfDefmodules: Sets the list of defmodules to the specified */
/*   value. Normally used when initializing a run-time module or     */
/*   when bloading a binary file to install the list of defmodules.  */
/*********************************************************************/
globle void SetListOfDefmodules(
  void *theEnv,
  void *defmodulePtr)
  {
   DefmoduleData(theEnv)->ListOfDefmodules = (struct defmodule *) defmodulePtr;

   DefmoduleData(theEnv)->LastDefmodule = DefmoduleData(theEnv)->ListOfDefmodules;
   if (DefmoduleData(theEnv)->LastDefmodule == NULL) return;
   while (DefmoduleData(theEnv)->LastDefmodule->next != NULL) DefmoduleData(theEnv)->LastDefmodule = DefmoduleData(theEnv)->LastDefmodule->next;
  }

/********************************************************************/
/* EnvGetNextDefmodule: If passed a NULL pointer, returns the first */
/*   defmodule in the ListOfDefmodules. Otherwise returns the next  */
/*   defmodule following the defmodule passed as an argument.       */
/********************************************************************/
globle void *EnvGetNextDefmodule(
  void *theEnv,
  void *defmodulePtr)
  {
   if (defmodulePtr == NULL)
     { return((void *) DefmoduleData(theEnv)->ListOfDefmodules); }
   else
     { return((void *) (((struct defmodule *) defmodulePtr)->next)); }
  }

/*****************************************/
/* EnvGetDefmoduleName: Returns the name */
/*   of the specified defmodule.         */
/*****************************************/
#if IBM_TBC
#pragma argsused
#endif
globle char *EnvGetDefmoduleName(
  void *theEnv,
  void *defmodulePtr)
  { 
#if MAC_MCW || IBM_MCW || MAC_XCD
#pragma unused(theEnv)
#endif

   return(ValueToString(((struct defmodule *) defmodulePtr)->name)); 
  }

/***************************************************/
/* EnvGetDefmodulePPForm: Returns the pretty print */
/*   representation of the specified defmodule.    */
/***************************************************/
#if IBM_TBC
#pragma argsused
#endif
globle char *EnvGetDefmodulePPForm(
  void *theEnv,
  void *defmodulePtr)
  { 
#if MAC_MCW || IBM_MCW || MAC_XCD
#pragma unused(theEnv)
#endif

   return(((struct defmodule *) defmodulePtr)->ppForm); 
  }

#if (! RUN_TIME)

/***********************************************/
/* RemoveAllDefmodules: Removes all defmodules */
/*   from the current environment.             */
/***********************************************/
globle void RemoveAllDefmodules(
  void *theEnv)
  {
   struct defmodule *nextDefmodule;

   while (DefmoduleData(theEnv)->ListOfDefmodules != NULL)
     {
      nextDefmodule = DefmoduleData(theEnv)->ListOfDefmodules->next;
      ReturnDefmodule(theEnv,DefmoduleData(theEnv)->ListOfDefmodules,FALSE);
      DefmoduleData(theEnv)->ListOfDefmodules = nextDefmodule;
     }

   DefmoduleData(theEnv)->CurrentModule = NULL;
   DefmoduleData(theEnv)->LastDefmodule = NULL;
  }

/************************************************************/
/* ReturnDefmodule: Returns the data structures associated  */
/*   with a defmodule construct to the pool of free memory. */
/************************************************************/
static void ReturnDefmodule(
  void *theEnv,
  struct defmodule *theDefmodule,
  intBool environmentClear)
  {
   int i;
   struct moduleItem *theItem;
   struct portItem *theSpec, *nextSpec;

   /*=====================================================*/
   /* Set the current module to the module being deleted. */
   /*=====================================================*/

   if (theDefmodule == NULL) return;
   
   if (! environmentClear)
     { EnvSetCurrentModule(theEnv,(void *) theDefmodule); }

   /*============================================*/
   /* Call the free functions for the constructs */
   /* belonging to this module.                  */
   /*============================================*/

   if (theDefmodule->itemsArray != NULL)
     {
      if (! environmentClear)
        {
         for (i = 0, theItem = DefmoduleData(theEnv)->ListOfModuleItems;
              (i < DefmoduleData(theEnv)->NumberOfModuleItems) && (theItem != NULL);
              i++, theItem = theItem->next)
           {
            if (theItem->freeFunction != NULL)
              { (*theItem->freeFunction)(theEnv,theDefmodule->itemsArray[i]); }
           }
        }

      rm(theEnv,theDefmodule->itemsArray,sizeof(void *) * DefmoduleData(theEnv)->NumberOfModuleItems);
    }

   /*======================================================*/
   /* Decrement the symbol count for the defmodule's name. */
   /*======================================================*/

   if (! environmentClear)
     { DecrementSymbolCount(theEnv,theDefmodule->name); }

   /*====================================*/
   /* Free the items in the import list. */
   /*====================================*/

   theSpec = theDefmodule->importList;
   while (theSpec != NULL)
     {
      nextSpec = theSpec->next;
      if (! environmentClear)
        {
         if (theSpec->moduleName != NULL) DecrementSymbolCount(theEnv,theSpec->moduleName);
         if (theSpec->constructType != NULL) DecrementSymbolCount(theEnv,theSpec->constructType);
         if (theSpec->constructName != NULL) DecrementSymbolCount(theEnv,theSpec->constructName);
        }
      rtn_struct(theEnv,portItem,theSpec);
      theSpec = nextSpec;
     }

   /*====================================*/
   /* Free the items in the export list. */
   /*====================================*/

   theSpec = theDefmodule->exportList;
   while (theSpec != NULL)
     {
      nextSpec = theSpec->next;
      if (! environmentClear)
        {
         if (theSpec->moduleName != NULL) DecrementSymbolCount(theEnv,theSpec->moduleName);
         if (theSpec->constructType != NULL) DecrementSymbolCount(theEnv,theSpec->constructType);
         if (theSpec->constructName != NULL) DecrementSymbolCount(theEnv,theSpec->constructName);
        }
      rtn_struct(theEnv,portItem,theSpec);
      theSpec = nextSpec;
     }

   /*=========================================*/
   /* Free the defmodule pretty print string. */
   /*=========================================*/

   if (theDefmodule->ppForm != NULL)
     {
      rm(theEnv,theDefmodule->ppForm,
         (int) sizeof(char) * (strlen(theDefmodule->ppForm) + 1));
     }
     
   /*=======================*/
   /* Return the user data. */
   /*=======================*/

   ClearUserDataList(theEnv,theDefmodule->usrData);
   
   /*======================================*/
   /* Return the defmodule data structure. */
   /*======================================*/

   rtn_struct(theEnv,defmodule,theDefmodule);
  }

#endif /* (! RUN_TIME) */

/**********************************************************************/
/* EnvFindDefmodule: Searches for a defmodule in the list of defmodules. */
/*   Returns a pointer to the defmodule if found, otherwise NULL.     */
/**********************************************************************/
globle void *EnvFindDefmodule(
  void *theEnv,
  char *defmoduleName)
  {
   struct defmodule *defmodulePtr;
   SYMBOL_HN *findValue;

   if ((findValue = (SYMBOL_HN *) FindSymbolHN(theEnv,defmoduleName)) == NULL) return(NULL);

   defmodulePtr = DefmoduleData(theEnv)->ListOfDefmodules;
   while (defmodulePtr != NULL)
     {
      if (defmodulePtr->name == findValue)
        { return((void *) defmodulePtr); }

      defmodulePtr = defmodulePtr->next;
     }

   return(NULL);
  }

/*************************************************/
/* GetCurrentModuleCommand: H/L access routine   */
/*   for the get-current-module command.         */
/*************************************************/
globle void *GetCurrentModuleCommand(
  void *theEnv)
  {
   struct defmodule *theModule;

   EnvArgCountCheck(theEnv,"get-current-module",EXACTLY,0);

   theModule = (struct defmodule *) EnvGetCurrentModule(theEnv);

   if (theModule == NULL) return((SYMBOL_HN *) EnvFalseSymbol(theEnv));

   return((SYMBOL_HN *) EnvAddSymbol(theEnv,ValueToString(theModule->name)));
  }

/*************************************************/
/* SetCurrentModuleCommand: H/L access routine   */
/*   for the set-current-module command.         */
/*************************************************/
globle void *SetCurrentModuleCommand(
  void *theEnv)
  {
   DATA_OBJECT argPtr;
   char *argument;
   struct defmodule *theModule;
   SYMBOL_HN *defaultReturn;

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

   theModule = ((struct defmodule *) EnvGetCurrentModule(theEnv));
   if (theModule == NULL) return((SYMBOL_HN *) EnvFalseSymbol(theEnv));

   defaultReturn = (SYMBOL_HN *) EnvAddSymbol(theEnv,ValueToString(((struct defmodule *) EnvGetCurrentModule(theEnv))->name));

   if (EnvArgCountCheck(theEnv,"set-current-module",EXACTLY,1) == -1)
     { return(defaultReturn); }

   if (EnvArgTypeCheck(theEnv,"set-current-module",1,SYMBOL,&argPtr) == FALSE)
     { return(defaultReturn); }

   argument = DOToString(argPtr);

   /*================================================*/
   /* Set the current module to the specified value. */
   /*================================================*/

   theModule = (struct defmodule *) EnvFindDefmodule(theEnv,argument);

   if (theModule == NULL)
     {
      CantFindItemErrorMessage(theEnv,"defmodule",argument);
      return(defaultReturn);
     }

   EnvSetCurrentModule(theEnv,(void *) theModule);

   /*================================*/
   /* Return the new current module. */
   /*================================*/

   return((SYMBOL_HN *) defaultReturn);
  }

/*************************************************/
/* AddAfterModuleChangeFunction: Adds a function */
/*   to the list of functions to be called after */
/*   a module change occurs.                     */
/*************************************************/
globle void AddAfterModuleChangeFunction(
  void *theEnv,
  char *name,
  void (*func)(void *),
  int priority)
  {
   DefmoduleData(theEnv)->AfterModuleChangeFunctions =
     AddFunctionToCallList(theEnv,name,priority,func,DefmoduleData(theEnv)->AfterModuleChangeFunctions,TRUE);
  }

/************************************************/
/* IllegalModuleSpecifierMessage: Error message */
/*   for the illegal use of a module specifier. */
/************************************************/
globle void IllegalModuleSpecifierMessage(
  void *theEnv)
  {
   PrintErrorID(theEnv,"MODULDEF",1,TRUE);
   EnvPrintRouter(theEnv,WERROR,"Illegal use of the module specifier.\n");
  }