vtkWrapTcl.c

/*=========================================================================

  Program:   Visualization Toolkit
  Module:    vtkWrapTcl.c
  Language:  C++
  Date:      $Date$
  Version:   $Revision$


Copyright (c) 1993-2001 Ken Martin, Will Schroeder, Bill Lorensen 
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

 * Redistributions of source code must retain the above copyright notice,
   this list of conditions and the following disclaimer.

 * Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.

 * Neither name of Ken Martin, Will Schroeder, or Bill Lorensen nor the names
   of any contributors may be used to endorse or promote products derived
   from this software without specific prior written permission.

 * Modified source versions must be plainly marked as such, and must not be
   misrepresented as being the original software.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

=========================================================================*/

#include <stdio.h>
#include <string.h>
#include "vtkParse.h"

int numberOfWrappedFunctions = 0;
FunctionInfo *wrappedFunctions[1000];
extern FunctionInfo *currentFunction;


void output_temp(FILE *fp, int i, int aType, char *Id, int count)
{
  /* handle VAR FUNCTIONS */
  if (aType == 5000)
    {
    fprintf(fp,"    vtkTclVoidFuncArg *temp%i = new vtkTclVoidFuncArg;\n",i);
    return;
    }
  
  /* ignore void */
  if (((aType % 10) == 2)&&(!((aType%1000)/100)))
    {
    return;
    }

  /* for const * return types prototype with const */
  if ((i == MAX_ARGS) && (aType%2000 >= 1000))
    {
    fprintf(fp,"    const ");
    }
  else
    {
    fprintf(fp,"    ");
    }

  if ((aType%100)/10 == 1)
    {
    fprintf(fp,"unsigned ");
    }

  switch (aType%10)
    {
    case 1:   fprintf(fp,"float  "); break;
    case 7:   fprintf(fp,"double "); break;
    case 4:   fprintf(fp,"int    "); break;
    case 5:   fprintf(fp,"short  "); break;
    case 6:   fprintf(fp,"long   "); break;
    case 2:     fprintf(fp,"void   "); break;
    case 3:     fprintf(fp,"char   "); break;
    case 9:     fprintf(fp,"%s ",Id); break;
    case 8: return;
    }

  /* handle array arguements */
  if (count > 1)
    {
    fprintf(fp,"temp%i[%i];\n",i,count);
    return;
    }
  
  switch ((aType%1000)/100)
    {
    case 1: fprintf(fp, " *"); break; /* act " &" */
    case 2: fprintf(fp, "&&"); break;
    case 3: fprintf(fp, " *"); break;
    case 4: fprintf(fp, "&*"); break;
    case 5: fprintf(fp, "*&"); break;
    case 7: fprintf(fp, "**"); break;
    default: fprintf(fp,"  "); break;
    }
  
  fprintf(fp,"temp%i",i);
  fprintf(fp,";\n");
}

/* when the cpp file doesn't have enough info use the hint file */
void use_hints(FILE *fp)
{
  int  i;

  /* use the hint */
  switch (currentFunction->ReturnType%1000)
    {
    case 301: case 307:  
      fprintf(fp,"    char tempResult[1024];\n");
      fprintf(fp,"    sprintf(tempResult,\"");
      for (i = 0; i < currentFunction->HintSize; i++)
        {
        fprintf(fp,"%%g ");
        }
      fprintf(fp,"\"");
      for (i = 0; i < currentFunction->HintSize; i++)
        {
        fprintf(fp,",temp%i[%i]",MAX_ARGS,i);
        }
      fprintf(fp,");\n");
      fprintf(fp,"    Tcl_SetResult(interp, tempResult, TCL_VOLATILE);\n");
      break;
    case 304: case 305: case 306: 
      fprintf(fp,"    char tempResult[1024];\n");
      fprintf(fp,"    sprintf(tempResult,\"");
      for (i = 0; i < currentFunction->HintSize; i++)
        {
        fprintf(fp,"%%i ");
        }
      fprintf(fp,"\"");
      for (i = 0; i < currentFunction->HintSize; i++)
        {
        fprintf(fp,",temp%i[%i]",MAX_ARGS,i);
        }
      fprintf(fp,");\n");
      fprintf(fp,"    Tcl_SetResult(interp, tempResult, TCL_VOLATILE);\n");
      break;
    case 313: case 314: case 315: case 316:
      fprintf(fp,"    char tempResult[1024];\n");
      fprintf(fp,"    sprintf(tempResult,\"");
      for (i = 0; i < currentFunction->HintSize; i++)
        {
        fprintf(fp,"%%u ");
        }
      fprintf(fp,"\"");
      for (i = 0; i < currentFunction->HintSize; i++)
        {
        fprintf(fp,",temp%i[%i]",MAX_ARGS,i);
        }
      fprintf(fp,");\n");
      fprintf(fp,"    Tcl_SetResult(interp, tempResult, TCL_VOLATILE);\n");
      break;
    }
}

void return_result(FILE *fp)
{
  switch (currentFunction->ReturnType%1000)
    {
    case 2:
      fprintf(fp,"      Tcl_ResetResult(interp);\n"); 
      break;
    case 1: case 7: 
      fprintf(fp,"      char tempResult[1024];\n");
      fprintf(fp,"      sprintf(tempResult,\"%%g\",temp%i);\n",
              MAX_ARGS); 
      fprintf(fp,"      Tcl_SetResult(interp, tempResult, TCL_VOLATILE);\n");
      break;
    case 4:  
      fprintf(fp,"      char tempResult[1024];\n");
      fprintf(fp,"      sprintf(tempResult,\"%%i\",temp%i);\n",
              MAX_ARGS); 
      fprintf(fp,"      Tcl_SetResult(interp, tempResult, TCL_VOLATILE);\n");
      break;
    case 5:
      fprintf(fp,"      char tempResult[1024];\n");
      fprintf(fp,"      sprintf(tempResult,\"%%hi\",temp%i);\n",
              MAX_ARGS); 
      fprintf(fp,"      Tcl_SetResult(interp, tempResult, TCL_VOLATILE);\n");
      break;
    case 6:
      fprintf(fp,"      char tempResult[1024];\n");
      fprintf(fp,"      sprintf(tempResult,\"%%li\",temp%i);\n",
              MAX_ARGS);
      fprintf(fp,"      Tcl_SetResult(interp, tempResult, TCL_VOLATILE);\n");
      break;
    case 14:
      fprintf(fp,"      char tempResult[1024];\n");
      fprintf(fp,"      sprintf(tempResult,\"%%u\",temp%i);\n",
              MAX_ARGS); 
      fprintf(fp,"      Tcl_SetResult(interp, tempResult, TCL_VOLATILE);\n");
      break;
    case 15: 
      fprintf(fp,"      char tempResult[1024];\n");
      fprintf(fp,"      sprintf(tempResult,\"%%hu\",temp%i);\n",
              MAX_ARGS);  
      fprintf(fp,"      Tcl_SetResult(interp, tempResult, TCL_VOLATILE);\n");
      break;
    case 16:  
      fprintf(fp,"      char tempResult[1024];\n");
      fprintf(fp,"      sprintf(tempResult,\"%%lu\",temp%i);\n",
              MAX_ARGS);
      fprintf(fp,"      Tcl_SetResult(interp, tempResult, TCL_VOLATILE);\n");
      break;
    case 13:
      fprintf(fp,"      char tempResult[1024];\n");
      fprintf(fp,"      sprintf(tempResult,\"%%hu\",temp%i);\n",
              MAX_ARGS); 
      fprintf(fp,"      Tcl_SetResult(interp, tempResult, TCL_VOLATILE);\n");
      break;
    case 303:
      fprintf(fp,"      if (temp%i)\n        {\n        Tcl_SetResult(interp, (char*)temp%i, TCL_VOLATILE);\n",MAX_ARGS,MAX_ARGS); 
      fprintf(fp,"        }\n      else\n        {\n");
      fprintf(fp,"        Tcl_ResetResult(interp);\n        }\n"); 
      break;
    case 3:
      fprintf(fp,"      char tempResult[1024];\n");
      fprintf(fp,"      sprintf(tempResult,\"%%c\",temp%i);\n",
              MAX_ARGS); 
      fprintf(fp,"      Tcl_SetResult(interp, tempResult, TCL_VOLATILE);\n");
      break;
    case 109:
    case 309:  
      fprintf(fp,"      vtkTclGetObjectFromPointer(interp,(void *)temp%i,%sCommand);\n",MAX_ARGS,currentFunction->ReturnClass);
      break;

    /* handle functions returning vectors */
    /* this is done by looking them up in a hint file */
    case 301: case 307:
    case 304: case 305: case 306:
    case 313: case 314: case 315: case 316:      
      use_hints(fp);
      break;
    default:
      fprintf(fp,"    Tcl_SetResult(interp, (char *) \"unable to return result.\", TCL_VOLATILE);\n");
      break;
    }
}

void handle_return_prototype(FILE *fp)
{
  switch (currentFunction->ReturnType%1000)
    {
    case 109:
    case 309:  
      fprintf(fp,"    int %sCommand(ClientData, Tcl_Interp *, int, char *[]);\n",currentFunction->ReturnClass);
      break;
    }
}

void get_args(FILE *fp, int i)
{
  int j;
  int start_arg = 2;
  
  /* what arg do we start with */
  for (j = 0; j < i; j++)
    {
    start_arg = start_arg + 
      (currentFunction->ArgCounts[j] ? currentFunction->ArgCounts[j] : 1);
    }
  
  /* handle VAR FUNCTIONS */
  if (currentFunction->ArgTypes[i] == 5000)
    {
    fprintf(fp,"    temp%i->interp = interp;\n",i);
    fprintf(fp,"    temp%i->command = strcpy(new char [strlen(argv[2])+1],argv[2]);\n",i);
    return;
    }

  /* ignore void */
  if (((currentFunction->ArgTypes[i] % 10) == 2)&&
      (!((currentFunction->ArgTypes[i]%1000)/100)))
    {
    return;
    }
  
  switch (currentFunction->ArgTypes[i]%1000)
    {
    case 1: case 7:  
      fprintf(fp,
              "    if (Tcl_GetDouble(interp,argv[%i],&tempd) != TCL_OK) error = 1;\n",
              start_arg); 
      fprintf(fp,"    temp%i = tempd;\n",i);
      break;
    case 4: case 5: case 6: 
      fprintf(fp,"    if (Tcl_GetInt(interp,argv[%i],&tempi) != TCL_OK) error = 1;\n",
              start_arg); 
      fprintf(fp,"    temp%i = tempi;\n",i);
      break;
    case 3:
      fprintf(fp,"    temp%i = *(argv[%i]);\n",i,start_arg);
      break;
    case 13:
      fprintf(fp,"    if (Tcl_GetInt(interp,argv[%i],&tempi) != TCL_OK) error = 1;\n",
              start_arg); 
      fprintf(fp,"    temp%i = (unsigned char)tempi;\n",i);
      break;
    case 14:
      fprintf(fp,"    if (Tcl_GetInt(interp,argv[%i],&tempi) != TCL_OK) error = 1;\n",
              start_arg); 
      fprintf(fp,"    temp%i = (unsigned int)tempi;\n",i);
      break;
    case 15:
      fprintf(fp,"    if (Tcl_GetInt(interp,argv[%i],&tempi) != TCL_OK) error = 1;\n",
              start_arg); 
      fprintf(fp,"    temp%i = (unsigned short)tempi;\n",i);
      break;
    case 16:
      fprintf(fp,"    if (Tcl_GetInt(interp,argv[%i],&tempi) != TCL_OK) error = 1;\n",
              start_arg); 
      fprintf(fp,"    temp%i = (unsigned long)tempi;\n",i);
      break;
    case 303:
      fprintf(fp,"    temp%i = argv[%i];\n",i,start_arg);
      break;
    case 109:
    case 309:
      fprintf(fp,"    temp%i = (%s *)(vtkTclGetPointerFromObject(argv[%i],(char *) \"%s\",interp,error));\n",i,currentFunction->ArgClasses[i],start_arg,
              currentFunction->ArgClasses[i]);
      break;
    case 2:    
    case 9:
      break;
    default:
      if (currentFunction->ArgCounts[i] > 1)
        {
        for (j = 0; j < currentFunction->ArgCounts[i]; j++)
          {
          switch (currentFunction->ArgTypes[i]%100)
            {
            case 1: case 7:  
              fprintf(fp,
                      "    if (Tcl_GetDouble(interp,argv[%i],&tempd) != TCL_OK) error = 1;\n",
                      start_arg); 
              fprintf(fp,"    temp%i[%i] = tempd;\n",i,j);
              break;
            case 4: case 5: case 6: 
              fprintf(fp,"    if (Tcl_GetInt(interp,argv[%i],&tempi) != TCL_OK) error = 1;\n",
                      start_arg); 
              fprintf(fp,"    temp%i[%i] = tempi;\n",i,j);
              break;
            case 3:
              fprintf(fp,"    temp%i[%i] = *(argv[%i]);\n",i,j,start_arg);
              break;
            case 13:
              fprintf(fp,"    if (Tcl_GetInt(interp,argv[%i],&tempi) != TCL_OK) error = 1;\n",
                      start_arg); 
              fprintf(fp,"    temp%i[%i] = (unsigned char)tempi;\n",i,j);
              break;
            case 14:
              fprintf(fp,"    if (Tcl_GetInt(interp,argv[%i],&tempi) != TCL_OK) error = 1;\n",
                      start_arg); 
              fprintf(fp,"    temp%i[%i] = (unsigned int)tempi;\n",i,j);
              break;
            case 15:
              fprintf(fp,"    if (Tcl_GetInt(interp,argv[%i],&tempi) != TCL_OK) error = 1;\n",
                      start_arg); 
              fprintf(fp,"    temp%i[%i] = (unsigned short)tempi;\n",i,j);
              break;
            case 16:
              fprintf(fp,"    if (Tcl_GetInt(interp,argv[%i],&tempi) != TCL_OK) error = 1;\n",
                      start_arg); 
              fprintf(fp,"    temp%i[%i] = (unsigned long)tempi;\n",i,j);
              break;
            }
          start_arg++;
          }
        }
      
    }
}

void outputFunction(FILE *fp, FileInfo *data)
{
  int i;
  int args_ok = 1;
 
  /* some functions will not get wrapped no matter what else */
  if (currentFunction->IsOperator || 
      currentFunction->ArrayFailure ||
      !currentFunction->IsPublic ||
      !currentFunction->Name) 
    {
    return;
    }
  
  /* check to see if we can handle the args */
  for (i = 0; i < currentFunction->NumberOfArguments; i++)
    {
    if ((currentFunction->ArgTypes[i]%10) == 8) args_ok = 0;
    /* if its a pointer arg make sure we have the ArgCount */
    if ((currentFunction->ArgTypes[i]%1000 >= 100) &&
        (currentFunction->ArgTypes[i]%1000 != 303)&&
        (currentFunction->ArgTypes[i]%1000 != 309)&&
        (currentFunction->ArgTypes[i]%1000 != 109)) 
      {
      if (currentFunction->NumberOfArguments > 1 ||
          !currentFunction->ArgCounts[i])
        {
        args_ok = 0;
        }
      }
    if ((currentFunction->ArgTypes[i]%100 >= 10)&&
        (currentFunction->ArgTypes[i] != 13)&&
        (currentFunction->ArgTypes[i] != 14)&&
        (currentFunction->ArgTypes[i] != 15)&&
        (currentFunction->ArgTypes[i] != 16)) args_ok = 0;
    }
  if ((currentFunction->ReturnType%10) == 8) args_ok = 0;
  if (((currentFunction->ReturnType%1000)/100 != 3)&&
      ((currentFunction->ReturnType%1000)/100 != 1)&&
      ((currentFunction->ReturnType%1000)/100)) args_ok = 0;
  if (currentFunction->NumberOfArguments && 
      (currentFunction->ArgTypes[0] == 5000)
      &&(currentFunction->NumberOfArguments != 1)) args_ok = 0;

  /* we can't handle void * return types */
  if ((currentFunction->ReturnType%1000) == 302) 
    {
    args_ok = 0;
    }
  
  /* watch out for functions that dont have enough info */
  switch (currentFunction->ReturnType%1000)
    {
    case 301: case 307:
    case 304: case 305: case 306:
    case 313: case 314: case 315: case 316:
      args_ok = currentFunction->HaveHint;
      break;
    }
  
  /* if the args are OK and it is not a constructor or destructor */
  if (args_ok && 
      strcmp(data->ClassName,currentFunction->Name) &&
      strcmp(data->ClassName,currentFunction->Name + 1))
    {
    int required_args = 0;
    
    /* calc the total required args */
    for (i = 0; i < currentFunction->NumberOfArguments; i++)
      {
      required_args = required_args + 
        (currentFunction->ArgCounts[i] ? currentFunction->ArgCounts[i] : 1);
      }
    
    fprintf(fp,"  if ((!strcmp(\"%s\",argv[1]))&&(argc == %i))\n    {\n",
            currentFunction->Name, required_args + 2);
    
    /* process the args */
    for (i = 0; i < currentFunction->NumberOfArguments; i++)
      {
      output_temp(fp, i, currentFunction->ArgTypes[i],
                  currentFunction->ArgClasses[i], 
                  currentFunction->ArgCounts[i]);
      }
    output_temp(fp, MAX_ARGS,currentFunction->ReturnType,
                currentFunction->ReturnClass, 0);
    handle_return_prototype(fp);
    fprintf(fp,"    error = 0;\n\n");
    
    /* now get the required args from the stack */
    for (i = 0; i < currentFunction->NumberOfArguments; i++)
      {
      get_args(fp,i);
      }
    
    fprintf(fp,"    if (!error)\n      {\n");
    switch (currentFunction->ReturnType%1000)
      {
      case 2:
        fprintf(fp,"      op->%s(",currentFunction->Name);
        break;
      case 109:
        fprintf(fp,"      temp%i = &(op)->%s(",MAX_ARGS,currentFunction->Name);
        break;
      default:
        fprintf(fp,"      temp%i = (op)->%s(",MAX_ARGS,currentFunction->Name);
      }
    for (i = 0; i < currentFunction->NumberOfArguments; i++)
      {
      if (i)
        {
        fprintf(fp,",");
        }
      if (currentFunction->ArgTypes[i] == 109)
        {
        fprintf(fp,"*(temp%i)",i);
        }
      else if (currentFunction->ArgTypes[i] == 5000)
        {
        fprintf(fp,"vtkTclVoidFunc,(void *)temp%i",i);
        }
      else
        {
        fprintf(fp,"temp%i",i);
        }
      }
    fprintf(fp,");\n");
    if (currentFunction->NumberOfArguments && 
        (currentFunction->ArgTypes[0] == 5000))
      {
      fprintf(fp,"      op->%sArgDelete(vtkTclVoidFuncArgDelete);\n",
              currentFunction->Name);
      }
    return_result(fp);
    fprintf(fp,"      return TCL_OK;\n      }\n");
    fprintf(fp,"    }\n");
    
    wrappedFunctions[numberOfWrappedFunctions] = currentFunction;
    numberOfWrappedFunctions++;
    }
}

/* print the parsed structures */
void vtkParseOutput(FILE *fp, FileInfo *data)
{
  int i,j;
  
  fprintf(fp,"// tcl wrapper for %s object\n//\n",data->ClassName);
  fprintf(fp,"#include \"vtkSystemIncludes.h\"\n");
  fprintf(fp,"#include \"%s.h\"\n\n",data->ClassName);
  fprintf(fp,"#include \"vtkTclUtil.h\"\n");
  if (data->IsConcrete)
    {
    if (strcmp(data->ClassName, "vtkRenderWindowInteractor") == 0)
      {
      fprintf(fp,"#ifndef _WIN32\n");
      fprintf(fp,"#include \"vtkXRenderWindowTclInteractor.h\"\n");
      fprintf(fp,"#endif\n");

      fprintf(fp,"\nClientData %sNewCommand()\n{\n",data->ClassName);

      fprintf(fp,"#ifndef _WIN32\n");
      fprintf(fp,"  %s *temp = vtkXRenderWindowTclInteractor::New();\n",
              data->ClassName);
      fprintf(fp,"#else\n");
      fprintf(fp,"  %s *temp = %s::New();\n",data->ClassName,data->ClassName);
      fprintf(fp,"#endif\n");
      fprintf(fp,"  return ((ClientData)temp);\n}\n\n");
      }
    else
      {
      fprintf(fp,"\nClientData %sNewCommand()\n{\n",data->ClassName);
      fprintf(fp,"  %s *temp = %s::New();\n",data->ClassName,data->ClassName);
      fprintf(fp,"  return ((ClientData)temp);\n}\n\n");
      }
    }
  
  for (i = 0; i < data->NumberOfSuperClasses; i++)
    {
    fprintf(fp,"int %sCppCommand(%s *op, Tcl_Interp *interp,\n             int argc, char *argv[]);\n",data->SuperClasses[i],data->SuperClasses[i]);
    }
  fprintf(fp,"int VTKTCL_EXPORT %sCppCommand(%s *op, Tcl_Interp *interp,\n             int argc, char *argv[]);\n",data->ClassName,data->ClassName);
  fprintf(fp,"\nint VTKTCL_EXPORT %sCommand(ClientData cd, Tcl_Interp *interp,\n             int argc, char *argv[])\n{\n",data->ClassName);
  fprintf(fp,"  if ((argc == 2)&&(!strcmp(\"Delete\",argv[1]))&& !vtkTclInDelete(interp))\n    {\n");
  fprintf(fp,"    Tcl_DeleteCommand(interp,argv[0]);\n");
  fprintf(fp,"    return TCL_OK;\n    }\n");
  fprintf(fp,"   return %sCppCommand((%s *)(((vtkTclCommandArgStruct *)cd)->Pointer),interp, argc, argv);\n}\n",data->ClassName,data->ClassName);
  
  fprintf(fp,"\nint VTKTCL_EXPORT %sCppCommand(%s *op, Tcl_Interp *interp,\n             int argc, char *argv[])\n{\n",data->ClassName,data->ClassName);
  fprintf(fp,"  int    tempi;\n");
  fprintf(fp,"  double tempd;\n");
  fprintf(fp,"  static char temps[80];\n");
  fprintf(fp,"  int    error;\n\n");
  fprintf(fp,"  error = 0; error = error;\n");
  fprintf(fp,"  tempi = 0; tempi = tempi;\n");
  fprintf(fp,"  tempd = 0; tempd = tempd;\n");
  fprintf(fp,"  temps[0] = 0; temps[0] = temps[0];\n\n");

  fprintf(fp,"  if (argc < 2)\n    {\n    Tcl_SetResult(interp, (char *) \"Could not find requested method.\", TCL_VOLATILE);\n    return TCL_ERROR;\n    }\n");

  /* stick in the typecasting and delete functionality here */
  fprintf(fp,"  if (!interp)\n    {\n");
  fprintf(fp,"    if (!strcmp(\"DoTypecasting\",argv[0]))\n      {\n");
  fprintf(fp,"      if (!strcmp(\"%s\",argv[1]))\n        {\n",
          data->ClassName);
  fprintf(fp,"        argv[2] = (char *)((void *)op);\n");
  fprintf(fp,"        return TCL_OK;\n        }\n");

  /* check our superclasses */
  for (i = 0; i < data->NumberOfSuperClasses; i++)
    {
    fprintf(fp,"      if (%sCppCommand((%s *)op,interp,argc,argv) == TCL_OK)\n        {\n",
            data->SuperClasses[i],data->SuperClasses[i]);
    fprintf(fp,"        return TCL_OK;\n        }\n");      
    }
  fprintf(fp,"      }\n    return TCL_ERROR;\n    }\n\n");
  
  /* add the GetSuperClassName */
  if (data->NumberOfSuperClasses)
    {
    fprintf(fp,"  if (!strcmp(\"GetSuperClassName\",argv[1]))\n");
    fprintf(fp,"    {\n");
    fprintf(fp,"    Tcl_SetResult(interp,(char *) \"%s\", TCL_VOLATILE);\n",data->SuperClasses[0]);
    fprintf(fp,"    return TCL_OK;\n");
    fprintf(fp,"    }\n\n");      
    }
  
  /* insert function handling code here */
  for (i = 0; i < data->NumberOfFunctions; i++)
    {
    currentFunction = data->Functions + i;
    outputFunction(fp, data);
    }
  
  /* add the ListInstances method */
  fprintf(fp,"\n  if (!strcmp(\"ListInstances\",argv[1]))\n    {\n");
  fprintf(fp,"    vtkTclListInstances(interp,(ClientData)%sCommand);\n",data->ClassName);
  fprintf(fp,"    return TCL_OK;\n    }\n");
  
  /* add the ListMethods method */
  fprintf(fp,"\n  if (!strcmp(\"ListMethods\",argv[1]))\n    {\n");
  /* recurse up the tree */
  for (i = 0; i < data->NumberOfSuperClasses; i++)
    {
    fprintf(fp,"    %sCppCommand(op,interp,argc,argv);\n",
            data->SuperClasses[i]);
    }
  /* now list our methods */
  fprintf(fp,"    Tcl_AppendResult(interp,\"Methods from %s:\\n\",NULL);\n",data->ClassName);
  fprintf(fp,"    Tcl_AppendResult(interp,\"  GetSuperClassName\\n\",NULL);\n");
  for (i = 0; i < numberOfWrappedFunctions; i++)
    {
    int numArgs = 0;

    currentFunction = wrappedFunctions[i];
            
    /* calc the total required args */
    for (j = 0; j < currentFunction->NumberOfArguments; j++)
      {
      numArgs = numArgs + 
        (currentFunction->ArgCounts[j] ? currentFunction->ArgCounts[j] : 1);
      }

    if (numArgs > 1)
      {
      fprintf(fp,"    Tcl_AppendResult(interp,\"  %s\\t with %i args\\n\",NULL);\n",
              currentFunction->Name, numArgs);
      }
    if (numArgs == 1)
      {
          fprintf(fp,"    Tcl_AppendResult(interp,\"  %s\\t with 1 arg\\n\",NULL);\n",
                  currentFunction->Name);
      }
    if (numArgs == 0)
      {
      fprintf(fp,"    Tcl_AppendResult(interp,\"  %s\\n\",NULL);\n",
              currentFunction->Name);
      }
    }
  fprintf(fp,"    return TCL_OK;\n    }\n");
  
  /* try superclasses */
  for (i = 0; i < data->NumberOfSuperClasses; i++)
    {
    fprintf(fp,"\n  if (%sCppCommand((%s *)op,interp,argc,argv) == TCL_OK)\n",
            data->SuperClasses[i], data->SuperClasses[i]);
    fprintf(fp,"    {\n    return TCL_OK;\n    }\n");
    }
  
  /* add the default print method to Object */
  if (!strcmp("vtkObject",data->ClassName))
    {
    fprintf(fp,"  if ((!strcmp(\"Print\",argv[1]))&&(argc == 2))\n    {\n");
    fprintf(fp,"    ostrstream buf;\n");
    fprintf(fp,"    op->Print(buf);\n");
    fprintf(fp,"    buf.put('\\0');\n");
    fprintf(fp,"    Tcl_SetResult(interp,buf.str(),TCL_VOLATILE);\n");
    fprintf(fp,"    delete buf.str();\n");
    fprintf(fp,"    return TCL_OK;\n    }\n");

    fprintf(fp,"  if ((!strcmp(\"AddObserver\",argv[1]))&&(argc == 4))\n    {\n");
    fprintf(fp,"    vtkTclCommand *cbc = vtkTclCommand::New();\n");
    fprintf(fp,"    cbc->SetInterp(interp);\n");
    fprintf(fp,"    cbc->SetStringCommand(argv[3]);\n");
    
    fprintf(fp,"    unsigned long      temp20;\n");
    fprintf(fp,"    temp20 = op->AddObserver(argv[2],cbc);\n");
    fprintf(fp,"    cbc->Delete();\n");
    fprintf(fp,"    char tempResult[1024];\n");
    fprintf(fp,"    sprintf(tempResult,\"%%li\",temp20);\n");
    fprintf(fp,"    Tcl_SetResult(interp,tempResult,TCL_VOLATILE);\n");
    fprintf(fp,"    return TCL_OK;\n    }\n");
    }
  fprintf(fp,"\n  if ((argc >= 2)&&(!strstr(interp->result,\"Object named:\")))\n    {\n");
  fprintf(fp,"    char temps2[256];\n    sprintf(temps2,\"Object named: %%s, could not find requested method: %%s\\nor the method was called with incorrect arguments.\\n\",argv[0],argv[1]);\n    Tcl_AppendResult(interp,temps2,NULL);\n    }\n");
  fprintf(fp,"  return TCL_ERROR;\n}\n");

}