iotjava/iotpolicy/IoTCompiler.java

   1 package iotpolicy;
   2
   3 import java_cup.runtime.ComplexSymbolFactory;
   4 import java_cup.runtime.ScannerBuffer;
   5 import java.io.*;
   6 import java.util.Arrays;
   7 import java.util.ArrayList;
   8 import java.util.Collection;
   9 import java.util.Collections;
  10 import java.util.HashMap;
  11 import java.util.HashSet;
  12 import java.util.Iterator;
  13 import java.util.List;
  14 import java.util.Map;
  15 import java.util.Set;
  16
  17 import iotpolicy.parser.Lexer;
  18 import iotpolicy.parser.Parser;
  19 import iotpolicy.tree.ParseNode;
  20 import iotpolicy.tree.ParseNodeVector;
  21 import iotpolicy.tree.ParseTreeHandler;
  22 import iotpolicy.tree.Declaration;
  23 import iotpolicy.tree.DeclarationHandler;
  24 import iotpolicy.tree.CapabilityDecl;
  25 import iotpolicy.tree.InterfaceDecl;
  26 import iotpolicy.tree.RequiresDecl;
  27 import iotpolicy.tree.EnumDecl;
  28 import iotpolicy.tree.StructDecl;
  29
  30 import iotrmi.Java.IoTRMITypes;
  31
  32
  33 /** Class IoTCompiler is the main interface/stub compiler for
  34  *  files generation. This class calls helper classes
  35  *  such as Parser, Lexer, InterfaceDecl, CapabilityDecl,
  36  *  RequiresDecl, ParseTreeHandler, etc.
  37  *
  38  * @author      Rahmadi Trimananda <rahmadi.trimananda @ uci.edu>
  39  * @version     1.0
  40  * @since       2016-09-22
  41  */
  42 public class IoTCompiler {
  43
  44         /**
  45          * Class properties
  46          */
  47         // Maps multiple interfaces to multiple objects of ParseTreeHandler
  48         private Map<String,ParseTreeHandler> mapIntfacePTH;
  49         private Map<String,DeclarationHandler> mapIntDeclHand;
  50         private Map<String,Map<String,Set<String>>> mapInt2NewInts;
  51         // Data structure to store our types (primitives and non-primitives) for compilation
  52         private Map<String,String> mapPrimitives;
  53         private Map<String,String> mapNonPrimitivesJava;
  54         private Map<String,String> mapNonPrimitivesCplus;
  55         // Other data structures
  56         private Map<String,Integer> mapIntfaceObjId;            // Maps interface name to object Id
  57         private Map<String,Integer> mapNewIntfaceObjId;         // Maps new interface name to its object Id (keep track of stubs)
  58         private PrintWriter pw;
  59         private String dir;
  60         private String subdir;
  61
  62
  63         /**
  64          * Class constants
  65          */
  66         private final static String OUTPUT_DIRECTORY = "output_files";
  67
  68         private enum ParamCategory {
  69
  70                 PRIMITIVES,             // All the primitive types, e.g. byte, short, int, long, etc.
  71                 NONPRIMITIVES,  // Non-primitive types, e.g. Set, Map, List, etc.
  72                 ENUM,                   // Enum type
  73                 STRUCT,                 // Struct type
  74                 USERDEFINED             // Assumed as driver classes
  75         }
  76
  77
  78         /**
  79          * Class constructors
  80          */
  81         public IoTCompiler() {
  82
  83                 mapIntfacePTH = new HashMap<String,ParseTreeHandler>();
  84                 mapIntDeclHand = new HashMap<String,DeclarationHandler>();
  85                 mapInt2NewInts = new HashMap<String,Map<String,Set<String>>>();
  86                 mapIntfaceObjId = new HashMap<String,Integer>();
  87                 mapNewIntfaceObjId = new HashMap<String,Integer>();
  88                 mapPrimitives = new HashMap<String,String>();
  89                         arraysToMap(mapPrimitives, IoTRMITypes.primitivesJava, IoTRMITypes.primitivesCplus);
  90                 mapNonPrimitivesJava = new HashMap<String,String>();
  91                         arraysToMap(mapNonPrimitivesJava, IoTRMITypes.nonPrimitivesJava, IoTRMITypes.nonPrimitiveJavaLibs);
  92                 mapNonPrimitivesCplus = new HashMap<String,String>();
  93                         arraysToMap(mapNonPrimitivesCplus, IoTRMITypes.nonPrimitivesJava, IoTRMITypes.nonPrimitivesCplus);
  94                 pw = null;
  95                 dir = OUTPUT_DIRECTORY;
  96                 subdir = null;
  97         }
  98
  99
 100         /**
 101          * setDataStructures() sets parse tree and other data structures based on policy files.
 102          * <p>
 103          * It also generates parse tree (ParseTreeHandler) and
 104          * copies useful information from parse tree into
 105          * InterfaceDecl, CapabilityDecl, and RequiresDecl
 106          * data structures.
 107          * Additionally, the data structure handles are
 108          * returned from tree-parsing for further process.
 109          */
 110         public void setDataStructures(String origInt, ParseNode pnPol, ParseNode pnReq) {
 111
 112                 ParseTreeHandler ptHandler = new ParseTreeHandler(origInt, pnPol, pnReq);
 113                 DeclarationHandler decHandler = new DeclarationHandler();
 114                 // Process ParseNode and generate Declaration objects
 115                 // Interface
 116                 ptHandler.processInterfaceDecl();
 117                 InterfaceDecl intDecl = ptHandler.getInterfaceDecl();
 118                 decHandler.addInterfaceDecl(origInt, intDecl);
 119                 // Capabilities
 120                 ptHandler.processCapabilityDecl();
 121                 CapabilityDecl capDecl = ptHandler.getCapabilityDecl();
 122                 decHandler.addCapabilityDecl(origInt, capDecl);
 123                 // Requires
 124                 ptHandler.processRequiresDecl();
 125                 RequiresDecl reqDecl = ptHandler.getRequiresDecl();
 126                 decHandler.addRequiresDecl(origInt, reqDecl);
 127                 // Enumeration
 128                 ptHandler.processEnumDecl();
 129                 EnumDecl enumDecl = ptHandler.getEnumDecl();
 130                 decHandler.addEnumDecl(origInt, enumDecl);
 131                 // Struct
 132                 ptHandler.processStructDecl();
 133                 StructDecl structDecl = ptHandler.getStructDecl();
 134                 decHandler.addStructDecl(origInt, structDecl);
 135
 136                 mapIntfacePTH.put(origInt, ptHandler);
 137                 mapIntDeclHand.put(origInt, decHandler);
 138                 // Set object Id counter to 0 for each interface
 139                 mapIntfaceObjId.put(origInt, new Integer(0));
 140         }
 141
 142
 143         /**
 144          * getMethodsForIntface() reads for methods in the data structure
 145          * <p>
 146          * It is going to give list of methods for a certain interface
 147          *              based on the declaration of capabilities.
 148          */
 149         public void getMethodsForIntface(String origInt) {
 150
 151                 ParseTreeHandler ptHandler = mapIntfacePTH.get(origInt);
 152                 Map<String,Set<String>> mapNewIntMethods = new HashMap<String,Set<String>>();
 153                 // Get set of new interfaces, e.g. CameraWithCaptureAndData
 154                 // Generate this new interface with all the methods it needs
 155                 //              from different capabilities it declares
 156                 DeclarationHandler decHandler = mapIntDeclHand.get(origInt);
 157                 RequiresDecl reqDecl = (RequiresDecl) decHandler.getRequiresDecl(origInt);
 158                 Set<String> setIntfaces = reqDecl.getInterfaces();
 159                 for (String strInt : setIntfaces) {
 160
 161                         // Initialize a set of methods
 162                         Set<String> setMethods = new HashSet<String>();
 163                         // Get list of capabilities, e.g. ImageCapture, VideoRecording, etc.
 164                         List<String> listCapab = reqDecl.getCapabList(strInt);
 165                         for (String strCap : listCapab) {
 166
 167                                 // Get list of methods for each capability
 168                                 CapabilityDecl capDecl = (CapabilityDecl) decHandler.getCapabilityDecl(origInt);
 169                                 List<String> listCapabMeth = capDecl.getMethods(strCap);
 170                                 for (String strMeth : listCapabMeth) {
 171
 172                                         // Add methods into setMethods
 173                                         // This is to also handle redundancies (say two capabilities
 174                                         //              share the same methods)
 175                                         setMethods.add(strMeth);
 176                                 }
 177                         }
 178                         // Add interface and methods information into map
 179                         mapNewIntMethods.put(strInt, setMethods);
 180                 }
 181                 // Map the map of interface-methods to the original interface
 182                 mapInt2NewInts.put(origInt, mapNewIntMethods);
 183         }
 184
 185
 186         /**
 187          * HELPER: writeMethodJavaLocalInterface() writes the method of the local interface
 188          */
 189         private void writeMethodJavaLocalInterface(Collection<String> methods, InterfaceDecl intDecl) {
 190
 191                 for (String method : methods) {
 192
 193                         List<String> methParams = intDecl.getMethodParams(method);
 194                         List<String> methPrmTypes = intDecl.getMethodParamTypes(method);
 195                         print("public " + intDecl.getMethodType(method) + " " +
 196                                 intDecl.getMethodId(method) + "(");
 197                         for (int i = 0; i < methParams.size(); i++) {
 198                                 // Check for params with driver class types and exchange it
 199                                 //              with its remote interface
 200                                 String paramType = checkAndGetParamClass(methPrmTypes.get(i));
 201                                 print(paramType + " " + methParams.get(i));
 202                                 // Check if this is the last element (don't print a comma)
 203                                 if (i != methParams.size() - 1) {
 204                                         print(", ");
 205                                 }
 206                         }
 207                         println(");");
 208                 }
 209         }
 210
 211
 212         /**
 213          * HELPER: writeMethodJavaInterface() writes the method of the interface
 214          */
 215         private void writeMethodJavaInterface(Collection<String> methods, InterfaceDecl intDecl) {
 216
 217                 for (String method : methods) {
 218
 219                         List<String> methParams = intDecl.getMethodParams(method);
 220                         List<String> methPrmTypes = intDecl.getMethodParamTypes(method);
 221                         print("public " + intDecl.getMethodType(method) + " " +
 222                                 intDecl.getMethodId(method) + "(");
 223                         for (int i = 0; i < methParams.size(); i++) {
 224                                 // Check for params with driver class types and exchange it
 225                                 //              with its remote interface
 226                                 String paramType = methPrmTypes.get(i);
 227                                 print(paramType + " " + methParams.get(i));
 228                                 // Check if this is the last element (don't print a comma)
 229                                 if (i != methParams.size() - 1) {
 230                                         print(", ");
 231                                 }
 232                         }
 233                         println(");");
 234                 }
 235         }
 236
 237
 238         /**
 239          * HELPER: generateEnumJava() writes the enumeration declaration
 240          */
 241         private void generateEnumJava() throws IOException {
 242
 243                 // Create a new directory
 244                 createDirectory(dir);
 245                 for (String intface : mapIntfacePTH.keySet()) {
 246                         // Get the right EnumDecl
 247                         DeclarationHandler decHandler = mapIntDeclHand.get(intface);
 248                         EnumDecl enumDecl = (EnumDecl) decHandler.getEnumDecl(intface);
 249                         Set<String> enumTypes = enumDecl.getEnumDeclarations();
 250                         // Iterate over enum declarations
 251                         for (String enType : enumTypes) {
 252                                 // Open a new file to write into
 253                                 FileWriter fw = new FileWriter(dir + "/" + enType + ".java");
 254                                 pw = new PrintWriter(new BufferedWriter(fw));
 255                                 println("public enum " + enType + " {");
 256                                 List<String> enumMembers = enumDecl.getMembers(enType);
 257                                 for (int i = 0; i < enumMembers.size(); i++) {
 258
 259                                         String member = enumMembers.get(i);
 260                                         print(member);
 261                                         // Check if this is the last element (don't print a comma)
 262                                         if (i != enumMembers.size() - 1)
 263                                                 println(",");
 264                                         else
 265                                                 println("");
 266                                 }
 267                                 println("}\n");
 268                                 pw.close();
 269                                 System.out.println("IoTCompiler: Generated enum class " + enType + ".java...");
 270                         }
 271                 }
 272         }
 273
 274
 275         /**
 276          * HELPER: generateStructJava() writes the struct declaration
 277          */
 278         private void generateStructJava() throws IOException {
 279
 280                 // Create a new directory
 281                 createDirectory(dir);
 282                 for (String intface : mapIntfacePTH.keySet()) {
 283                         // Get the right StructDecl
 284                         DeclarationHandler decHandler = mapIntDeclHand.get(intface);
 285                         StructDecl structDecl = (StructDecl) decHandler.getStructDecl(intface);
 286                         List<String> structTypes = structDecl.getStructTypes();
 287                         // Iterate over enum declarations
 288                         for (String stType : structTypes) {
 289                                 // Open a new file to write into
 290                                 FileWriter fw = new FileWriter(dir + "/" + stType + ".java");
 291                                 pw = new PrintWriter(new BufferedWriter(fw));
 292                                 println("public class " + stType + " {");
 293                                 List<String> structMemberTypes = structDecl.getMemberTypes(stType);
 294                                 List<String> structMembers = structDecl.getMembers(stType);
 295                                 for (int i = 0; i < structMembers.size(); i++) {
 296
 297                                         String memberType = structMemberTypes.get(i);
 298                                         String member = structMembers.get(i);
 299                                         println("public static " + memberType + " " + member + ";");
 300                                 }
 301                                 println("}\n");
 302                                 pw.close();
 303                                 System.out.println("IoTCompiler: Generated struct class " + stType + ".java...");
 304                         }
 305                 }
 306         }
 307
 308
 309         /**
 310          * generateJavaLocalInterface() writes the local interface and provides type-checking.
 311          * <p>
 312          * It needs to rewrite and exchange USERDEFINED types in input parameters of stub
 313          * and original interfaces, e.g. exchange Camera and CameraWithVideoAndRecording.
 314          * The local interface has to be the input parameter for the stub and the stub
 315          * interface has to be the input parameter for the local class.
 316          */
 317         public void generateJavaLocalInterfaces() throws IOException {
 318
 319                 // Create a new directory
 320                 createDirectory(dir);
 321                 for (String intface : mapIntfacePTH.keySet()) {
 322                         // Open a new file to write into
 323                         FileWriter fw = new FileWriter(dir + "/" + intface + ".java");
 324                         pw = new PrintWriter(new BufferedWriter(fw));
 325                         // Pass in set of methods and get import classes
 326                         DeclarationHandler decHandler = mapIntDeclHand.get(intface);
 327                         InterfaceDecl intDecl = (InterfaceDecl) decHandler.getInterfaceDecl(intface);
 328                         List<String> methods = intDecl.getMethods();
 329                         Set<String> importClasses = getImportClasses(methods, intDecl);
 330                         List<String> stdImportClasses = getStandardJavaIntfaceImportClasses();
 331                         List<String> allImportClasses = getAllLibClasses(stdImportClasses, importClasses);
 332                         printImportStatements(allImportClasses);
 333                         // Write interface header
 334                         println("");
 335                         println("public interface " + intface + " {");
 336                         // Write methods
 337                         writeMethodJavaLocalInterface(methods, intDecl);
 338                         println("}");
 339                         pw.close();
 340                         System.out.println("IoTCompiler: Generated local interface " + intface + ".java...");
 341                 }
 342         }
 343
 344
 345         /**
 346          * generateJavaInterfaces() generate stub interfaces based on the methods list in Java
 347          */
 348         public void generateJavaInterfaces() throws IOException {
 349
 350                 // Create a new directory
 351                 String path = createDirectories(dir, subdir);
 352                 for (String intface : mapIntfacePTH.keySet()) {
 353
 354                         Map<String,Set<String>> mapNewIntMethods = mapInt2NewInts.get(intface);
 355                         for (Map.Entry<String,Set<String>> intMeth : mapNewIntMethods.entrySet()) {
 356
 357                                 // Open a new file to write into
 358                                 String newIntface = intMeth.getKey();
 359                                 FileWriter fw = new FileWriter(path + "/" + newIntface + ".java");
 360                                 pw = new PrintWriter(new BufferedWriter(fw));
 361                                 DeclarationHandler decHandler = mapIntDeclHand.get(intface);
 362                                 InterfaceDecl intDecl = (InterfaceDecl) decHandler.getInterfaceDecl(intface);
 363                                 // Pass in set of methods and get import classes
 364                                 List<String> methods = intDecl.getMethods();
 365                                 Set<String> importClasses = getImportClasses(methods, intDecl);
 366                                 List<String> stdImportClasses = getStandardJavaIntfaceImportClasses();
 367                                 List<String> allImportClasses = getAllLibClasses(stdImportClasses, importClasses);
 368                                 printImportStatements(allImportClasses);
 369                                 // Write interface header
 370                                 println("");
 371                                 println("public interface " + newIntface + " {\n");
 372                                 // Write methods
 373                                 writeMethodJavaInterface(methods, intDecl);
 374                                 println("}");
 375                                 pw.close();
 376                                 System.out.println("IoTCompiler: Generated interface " + newIntface + ".java...");
 377                         }
 378                 }
 379         }
 380
 381
 382         /**
 383          * HELPER: writePropertiesJavaPermission() writes the permission in properties
 384          */
 385         private void writePropertiesJavaPermission(String intface, InterfaceDecl intDecl) {
 386
 387                 Map<String,Set<String>> mapNewIntMethods = mapInt2NewInts.get(intface);
 388                 for (Map.Entry<String,Set<String>> intMeth : mapNewIntMethods.entrySet()) {
 389                         String newIntface = intMeth.getKey();
 390                         int newObjectId = getNewIntfaceObjectId(newIntface);
 391                         println("private final static int object" + newObjectId + "Id = " +
 392                                 newObjectId + ";\t//" + newIntface);
 393                         Set<String> methodIds = intMeth.getValue();
 394                         print("private static Integer[] object" + newObjectId + "Permission = { ");
 395                         int i = 0;
 396                         for (String methodId : methodIds) {
 397                                 int methodNumId = intDecl.getMethodNumId(methodId);
 398                                 print(Integer.toString(methodNumId));
 399                                 // Check if this is the last element (don't print a comma)
 400                                 if (i != methodIds.size() - 1) {
 401                                         print(", ");
 402                                 }
 403                                 i++;
 404                         }
 405                         println(" };");
 406                         println("private static List<Integer> set" + newObjectId + "Allowed;");
 407                 }
 408         }
 409
 410
 411         /**
 412          * HELPER: writePropertiesJavaStub() writes the properties of the stub class
 413          */
 414         private void writePropertiesJavaStub(String intface, String newIntface, boolean callbackExist, Set<String> callbackClasses) {
 415
 416                 println("private IoTRMICall rmiCall;");
 417                 println("private String callbackAddress;");
 418                 println("private int[] ports;\n");
 419                 // Get the object Id
 420                 Integer objId = mapIntfaceObjId.get(intface);
 421                 println("private final static int objectId = " + objId + ";");
 422                 mapNewIntfaceObjId.put(newIntface, objId);
 423                 mapIntfaceObjId.put(intface, objId++);
 424                 if (callbackExist) {
 425                 // We assume that each class only has one callback interface for now
 426                         Iterator it = callbackClasses.iterator();
 427                         String callbackType = (String) it.next();
 428                         println("// Callback properties");
 429                         println("private IoTRMIObject rmiObj;");
 430                         println("List<" + callbackType + "> listCallbackObj;");
 431                         println("private static int objIdCnt = 0;");
 432                         // Generate permission stuff for callback stubs
 433                         DeclarationHandler decHandler = mapIntDeclHand.get(callbackType);
 434                         InterfaceDecl intDecl = (InterfaceDecl) decHandler.getInterfaceDecl(callbackType);
 435                         writePropertiesJavaPermission(callbackType, intDecl);
 436                 }
 437                 println("\n");
 438         }
 439
 440
 441         /**
 442          * HELPER: writeConstructorJavaPermission() writes the permission in constructor
 443          */
 444         private void writeConstructorJavaPermission(String intface) {
 445
 446                 Map<String,Set<String>> mapNewIntMethods = mapInt2NewInts.get(intface);
 447                 for (Map.Entry<String,Set<String>> intMeth : mapNewIntMethods.entrySet()) {
 448                         String newIntface = intMeth.getKey();
 449                         int newObjectId = getNewIntfaceObjectId(newIntface);
 450                         println("set" + newObjectId + "Allowed = new ArrayList<Integer>(Arrays.asList(object" + newObjectId +"Permission));");
 451                 }
 452         }
 453
 454
 455         /**
 456          * HELPER: writeConstructorJavaStub() writes the constructor of the stub class
 457          */
 458         private void writeConstructorJavaStub(String intface, String newStubClass, boolean callbackExist, Set<String> callbackClasses) {
 459
 460                 println("public " + newStubClass + "(int _port, String _skeletonAddress, String _callbackAddress, int _rev, int[] _ports) throws Exception {");
 461                 println("callbackAddress = _callbackAddress;");
 462                 println("ports = _ports;");
 463                 println("rmiCall = new IoTRMICall(_port, _skeletonAddress, _rev);");
 464                 if (callbackExist) {
 465                         Iterator it = callbackClasses.iterator();
 466                         String callbackType = (String) it.next();
 467                         writeConstructorJavaPermission(intface);
 468                         println("listCallbackObj = new ArrayList<" + callbackType + ">();");
 469                         println("___initCallBack();");
 470                 }
 471                 println("}\n");
 472         }
 473
 474
 475         /**
 476          * HELPER: writeJavaMethodCallbackPermission() writes permission checks in stub for callbacks
 477          */
 478         private void writeJavaMethodCallbackPermission(String intface) {
 479
 480                 println("int methodId = IoTRMIObject.getMethodId(method);");
 481                 // Get all the different stubs
 482                 Map<String,Set<String>> mapNewIntMethods = mapInt2NewInts.get(intface);
 483                 for (Map.Entry<String,Set<String>> intMeth : mapNewIntMethods.entrySet()) {
 484                         String newIntface = intMeth.getKey();
 485                         int newObjectId = getNewIntfaceObjectId(newIntface);
 486                         println("if (!set" + newObjectId + "Allowed.contains(methodId)) {");
 487                         println("throw new Error(\"Callback object for " + intface + " is not allowed to access method: \" + methodId);");
 488                         println("}");
 489                 }
 490         }
 491
 492
 493         /**
 494          * HELPER: writeJavaInitCallbackPermission() writes the permission for callback
 495          */
 496         private void writeJavaInitCallbackPermission(String intface, InterfaceDecl intDecl, boolean callbackExist) {
 497
 498                 if (callbackExist) {
 499                         String method = "___initCallBack()";
 500                         int methodNumId = intDecl.getHelperMethodNumId(method);
 501                         Map<String,Set<String>> mapNewIntMethods = mapInt2NewInts.get(intface);
 502                         for (Map.Entry<String,Set<String>> intMeth : mapNewIntMethods.entrySet()) {
 503                                 String newIntface = intMeth.getKey();
 504                                 int newObjectId = getNewIntfaceObjectId(newIntface);
 505                                 println("set" + newObjectId + "Allowed.add(" + methodNumId + ");");
 506                         }
 507                 }
 508         }
 509
 510
 511         /**
 512          * HELPER: writeInitCallbackJavaStub() writes callback initialization in stub
 513          */
 514         private void writeInitCallbackJavaStub(String intface, InterfaceDecl intDecl) {
 515
 516                 println("public void ___initCallBack() {");
 517                 // Generate main thread for callbacks
 518                 println("Thread thread = new Thread() {");
 519                 println("public void run() {");
 520                 println("try {");
 521                 println("rmiObj = new IoTRMIObject(ports[0]);");
 522                 println("while (true) {");
 523                 println("byte[] method = rmiObj.getMethodBytes();");
 524                 writeJavaMethodCallbackPermission(intface);
 525                 println("int objId = IoTRMIObject.getObjectId(method);");
 526                 println(intface + "_CallbackSkeleton skel = (" + intface + "_CallbackSkeleton) listCallbackObj.get(objId);");
 527                 println("if (skel != null) {");
 528                 println("skel.invokeMethod(rmiObj);");
 529                 print("}");
 530                 println(" else {");
 531                 println("throw new Error(\"" + intface + ": Object with Id \" + objId + \" not found!\");");
 532                 println("}");
 533                 println("}");
 534                 print("}");
 535                 println(" catch (Exception ex) {");
 536                 println("ex.printStackTrace();");
 537                 println("throw new Error(\"Error instantiating class " + intface + "_CallbackSkeleton!\");");
 538                 println("}");
 539                 println("}");
 540                 println("};");
 541                 println("thread.start();\n");
 542                 // Generate info sending part
 543                 String method = "___initCallBack()";
 544                 int methodNumId = intDecl.getHelperMethodNumId(method);
 545                 println("int methodId = " + methodNumId + ";");
 546                 println("Class<?> retType = void.class;");
 547                 println("Class<?>[] paramCls = new Class<?>[] { int.class, String.class, int.class };");
 548                 println("Object[] paramObj = new Object[] { ports[0], callbackAddress, 0 };");
 549                 println("rmiCall.remoteCall(objectId, methodId, retType, null, paramCls, paramObj);");
 550                 println("}\n");
 551         }
 552
 553
 554         /**
 555          * HELPER: checkAndWriteEnumTypeJavaStub() writes the enum type (convert from enum to int)
 556          */
 557         private void checkAndWriteEnumTypeJavaStub(List<String> methParams, List<String> methPrmTypes) {
 558
 559                 // Iterate and find enum declarations
 560                 for (int i = 0; i < methParams.size(); i++) {
 561                         String paramType = methPrmTypes.get(i);
 562                         String param = methParams.get(i);
 563                         String simpleType = getGenericType(paramType);
 564                         if (isEnumClass(simpleType)) {
 565                         // Check if this is enum type
 566                                 if (isArray(param)) {   // An array
 567                                         println("int len" + i + " = " + getSimpleIdentifier(param) + ".length;");
 568                                         println("int paramEnum" + i + "[] = new int[len" + i + "];");
 569                                         println("for (int i = 0; i < len" + i + "; i++) {");
 570                                         println("paramEnum" + i + "[i] = " + getSimpleIdentifier(param) + "[i].ordinal();");
 571                                         println("}");
 572                                 } else if (isList(paramType)) { // A list
 573                                         println("int len" + i + " = " + getSimpleIdentifier(param) + ".size();");
 574                                         println("int paramEnum" + i + "[] = new int[len" + i + "];");
 575                                         println("for (int i = 0; i < len" + i + "; i++) {");
 576                                         println("paramEnum" + i + "[i] = " + getSimpleIdentifier(param) + ".get(i).ordinal();");
 577                                         println("}");
 578                                 } else {        // Just one element
 579                                         println("int paramEnum" + i + "[] = new int[1];");
 580                                         println("paramEnum" + i + "[0] = " + param + ".ordinal();");
 581                                 }
 582                         }
 583                 }
 584         }
 585
 586
 587         /**
 588          * HELPER: checkAndWriteEnumRetTypeJavaStub() writes the enum return type (convert from enum to int)
 589          */
 590         private void checkAndWriteEnumRetTypeJavaStub(String retType) {
 591
 592                 // Strips off array "[]" for return type
 593                 String pureType = getSimpleArrayType(getGenericType(retType));
 594                 // Take the inner type of generic
 595                 if (getParamCategory(retType) == ParamCategory.NONPRIMITIVES)
 596                         pureType = getGenericType(retType);
 597                 if (isEnumClass(pureType)) {
 598                 // Check if this is enum type
 599                         // Enum decoder
 600                         println("int[] retEnum = (int[]) retObj;");
 601                         println(pureType + "[] enumVals = " + pureType + ".values();");
 602                         if (isArray(retType)) {                 // An array
 603                                 println("int retLen = retEnum.length;");
 604                                 println(pureType + "[] enumRetVal = new " + pureType + "[retLen];");
 605                                 println("for (int i = 0; i < retLen; i++) {");
 606                                 println("enumRetVal[i] = enumVals[retEnum[i]];");
 607                                 println("}");
 608                         } else if (isList(retType)) {   // A list
 609                                 println("int retLen = retEnum.length;");
 610                                 println("List<" + pureType + "> enumRetVal = new ArrayList<" + pureType + ">();");
 611                                 println("for (int i = 0; i < retLen; i++) {");
 612                                 println("enumRetVal.add(enumVals[retEnum[i]]);");
 613                                 println("}");
 614                         } else {        // Just one element
 615                                 println(pureType + " enumRetVal = enumVals[retEnum[0]];");
 616                         }
 617                         println("return enumRetVal;");
 618                 }
 619         }
 620
 621
 622         /**
 623          * HELPER: checkAndWriteStructSetupJavaStub() writes the struct type setup
 624          */
 625         private void checkAndWriteStructSetupJavaStub(List<String> methParams, List<String> methPrmTypes,
 626                         InterfaceDecl intDecl, String method) {
 627
 628                 // Iterate and find struct declarations
 629                 for (int i = 0; i < methParams.size(); i++) {
 630                         String paramType = methPrmTypes.get(i);
 631                         String param = methParams.get(i);
 632                         String simpleType = getGenericType(paramType);
 633                         if (isStructClass(simpleType)) {
 634                         // Check if this is enum type
 635                                 int methodNumId = intDecl.getMethodNumId(method);
 636                                 String helperMethod = methodNumId + "struct" + i;
 637                                 println("int methodIdStruct" + i + " = " + intDecl.getHelperMethodNumId(helperMethod) + ";");
 638                                 println("Class<?> retTypeStruct" + i + " = void.class;");
 639                                 println("Class<?>[] paramClsStruct" + i + " = new Class<?>[] { int.class };");
 640                                 if (isArray(param)) {   // An array
 641                                         println("Object[] paramObjStruct" + i + " = new Object[] { " + getSimpleArrayType(param) + ".length };");
 642                                 } else if (isList(paramType)) { // A list
 643                                         println("Object[] paramObjStruct" + i + " = new Object[] { " + getSimpleArrayType(param) + ".size() };");
 644                                 } else {        // Just one element
 645                                         println("Object[] paramObjStruct" + i + " = new Object[] { new Integer(1) };");
 646                                 }
 647                                 println("rmiCall.remoteCall(objectId, methodIdStruct" + i +
 648                                                 ", retTypeStruct" + i + ", null, paramClsStruct" + i +
 649                                                 ", paramObjStruct" + i + ");\n");
 650                         }
 651                 }
 652         }
 653
 654
 655         /**
 656          * HELPER: isStructPresent() checks presence of struct
 657          */
 658         private boolean isStructPresent(List<String> methParams, List<String> methPrmTypes) {
 659
 660                 // Iterate and find enum declarations
 661                 for (int i = 0; i < methParams.size(); i++) {
 662                         String paramType = methPrmTypes.get(i);
 663                         String param = methParams.get(i);
 664                         String simpleType = getGenericType(paramType);
 665                         if (isStructClass(simpleType))
 666                                 return true;
 667                 }
 668                 return false;
 669         }
 670
 671
 672         /**
 673          * HELPER: writeLengthStructParamClassJavaStub() writes lengths of parameters
 674          */
 675         private void writeLengthStructParamClassJavaStub(List<String> methParams, List<String> methPrmTypes) {
 676
 677                 // Iterate and find struct declarations - count number of params
 678                 for (int i = 0; i < methParams.size(); i++) {
 679                         String paramType = methPrmTypes.get(i);
 680                         String param = methParams.get(i);
 681                         String simpleType = getGenericType(paramType);
 682                         if (isStructClass(simpleType)) {
 683                                 int members = getNumOfMembers(simpleType);
 684                                 if (isArray(param)) {                   // An array
 685                                         String structLen = getSimpleArrayType(param) + ".length";
 686                                         print(members + "*" + structLen);
 687                                 } else if (isList(paramType)) { // A list
 688                                         String structLen = getSimpleArrayType(param) + ".size()";
 689                                         print(members + "*" + structLen);
 690                                 } else
 691                                         print(Integer.toString(members));
 692                         } else
 693                                 print("1");
 694                         if (i != methParams.size() - 1) {
 695                                 print("+");
 696                         }
 697                 }
 698         }
 699
 700
 701         /**
 702          * HELPER: writeStructMembersJavaStub() writes parameters of struct
 703          */
 704         private void writeStructMembersJavaStub(String simpleType, String paramType, String param) {
 705
 706                 // Get the struct declaration for this struct and generate initialization code
 707                 StructDecl structDecl = getStructDecl(simpleType);
 708                 List<String> memTypes = structDecl.getMemberTypes(simpleType);
 709                 List<String> members = structDecl.getMembers(simpleType);
 710                 if (isArray(param)) {                   // An array
 711                         println("for(int i = 0; i < " + getSimpleIdentifier(param) + ".length; i++) {");
 712                         for (int i = 0; i < members.size(); i++) {
 713                                 String prmType = checkAndGetArray(memTypes.get(i), members.get(i));
 714                                 println("paramCls[pos] = " + getSimpleType(getEnumType(prmType)) + ".class;");
 715                                 print("paramObj[pos++] = " + getSimpleIdentifier(param) + "[i].");
 716                                 print(getSimpleIdentifier(members.get(i)));
 717                                 println(";");
 718                         }
 719                         println("}");
 720                 } else if (isList(paramType)) { // A list
 721                         println("for(int i = 0; i < " + getSimpleIdentifier(param) + ".size(); i++) {");
 722                         for (int i = 0; i < members.size(); i++) {
 723                                 String prmType = checkAndGetArray(memTypes.get(i), members.get(i));
 724                                 println("paramCls[pos] = " + getSimpleType(getEnumType(prmType)) + ".class;");
 725                                 print("paramObj[pos++] = " + getSimpleIdentifier(param) + ".get(i).");
 726                                 print(getSimpleIdentifier(members.get(i)));
 727                                 println(";");
 728                         }
 729                         println("}");
 730                 } else {        // Just one struct element
 731                         for (int i = 0; i < members.size(); i++) {
 732                                 String prmType = checkAndGetArray(memTypes.get(i), members.get(i));
 733                                 println("paramCls[pos] = " + getSimpleType(getEnumType(prmType)) + ".class;");
 734                                 print("paramObj[pos++] = " + getSimpleIdentifier(param) + ".");
 735                                 print(getSimpleIdentifier(members.get(i)));
 736                                 println(";");
 737                         }
 738                 }
 739         }
 740
 741
 742         /**
 743          * HELPER: writeStructParamClassJavaStub() writes parameters if struct is present
 744          */
 745         private void writeStructParamClassJavaStub(List<String> methParams, List<String> methPrmTypes, String callbackType) {
 746
 747                 print("int paramLen = ");
 748                 writeLengthStructParamClassJavaStub(methParams, methPrmTypes);
 749                 println(";");
 750                 println("Object[] paramObj = new Object[paramLen];");
 751                 println("Class<?>[] paramCls = new Class<?>[paramLen];");
 752                 println("int pos = 0;");
 753                 // Iterate again over the parameters
 754                 for (int i = 0; i < methParams.size(); i++) {
 755                         String paramType = methPrmTypes.get(i);
 756                         String param = methParams.get(i);
 757                         String simpleType = getGenericType(paramType);
 758                         if (isStructClass(simpleType)) {
 759                                 writeStructMembersJavaStub(simpleType, paramType, param);
 760                         } else if (checkCallbackType(paramType, callbackType)) { // Check if this has callback object
 761                                 println("paramCls[pos] = int.class;");
 762                                 print("paramObj[pos++] = ");
 763                                 if (isArray(methParams.get(i)))
 764                                         print(getSimpleIdentifier(methParams.get(i)) + ".length");
 765                                 else if (isList(methPrmTypes.get(i)))
 766                                         print(getSimpleIdentifier(methParams.get(i)) + ".size()");
 767                                 else
 768                                         print("new Integer(1)");
 769                                 println(";");
 770                         } else {
 771                                 String prmType = checkAndGetArray(methPrmTypes.get(i), methParams.get(i));
 772                                 println("paramCls[pos] = " + getSimpleType(getEnumType(prmType)) + ".class;");
 773                                 print("paramObj[pos++] = ");
 774                                 print(getEnumParam(methPrmTypes.get(i), getSimpleIdentifier(methParams.get(i)), i));
 775                                 println(";");
 776                         }
 777                 }
 778
 779         }
 780
 781
 782         /**
 783          * HELPER: writeStructRetMembersJavaStub() writes parameters of struct for return statement
 784          */
 785         private void writeStructRetMembersJavaStub(String simpleType, String retType) {
 786
 787                 // Get the struct declaration for this struct and generate initialization code
 788                 StructDecl structDecl = getStructDecl(simpleType);
 789                 List<String> memTypes = structDecl.getMemberTypes(simpleType);
 790                 List<String> members = structDecl.getMembers(simpleType);
 791                 if (isArrayOrList(retType, retType)) {  // An array or list
 792                         println("for(int i = 0; i < retLen; i++) {");
 793                 }
 794                 if (isArray(retType)) { // An array
 795                         for (int i = 0; i < members.size(); i++) {
 796                                 String prmType = checkAndGetArray(memTypes.get(i), members.get(i));
 797                                 print("structRet[i]." + getSimpleIdentifier(members.get(i)));
 798                                 println(" = (" + getSimpleType(getEnumType(prmType)) + ") retObj[retObjPos++];");
 799                         }
 800                         println("}");
 801                 } else if (isList(retType)) {   // A list
 802                         println(simpleType + " structRetMem = new " + simpleType + "();");
 803                         for (int i = 0; i < members.size(); i++) {
 804                                 String prmType = checkAndGetArray(memTypes.get(i), members.get(i));
 805                                 print("structRetMem." + getSimpleIdentifier(members.get(i)));
 806                                 println(" = (" + getSimpleType(getEnumType(prmType)) + ") retObj[retObjPos++];");
 807                         }
 808                         println("structRet.add(structRetMem);");
 809                         println("}");
 810                 } else {        // Just one struct element
 811                         for (int i = 0; i < members.size(); i++) {
 812                                 String prmType = checkAndGetArray(memTypes.get(i), members.get(i));
 813                                 print("structRet." + getSimpleIdentifier(members.get(i)));
 814                                 println(" = (" + getSimpleType(getEnumType(prmType)) + ") retObj[retObjPos++];");
 815                         }
 816                 }
 817                 println("return structRet;");
 818         }
 819
 820
 821         /**
 822          * HELPER: writeStructReturnJavaStub() writes parameters if struct is present for return statement
 823          */
 824         private void writeStructReturnJavaStub(String simpleType, String retType) {
 825
 826                 // Handle the returned struct!!!
 827                 println("Object retLenObj = rmiCall.remoteCall(objectId, methodId, retType, null, paramCls, paramObj);");
 828                 // Minimum retLen is 1 if this is a single struct object
 829                 println("int retLen = (int) retLenObj;");
 830                 int numMem = getNumOfMembers(simpleType);
 831                 println("Class<?>[] retCls = new Class<?>[" + numMem + "*retLen];");
 832                 println("Class<?>[] retClsVal = new Class<?>[" + numMem + "*retLen];");
 833                 println("int retPos = 0;");
 834                 // Get the struct declaration for this struct and generate initialization code
 835                 StructDecl structDecl = getStructDecl(simpleType);
 836                 List<String> memTypes = structDecl.getMemberTypes(simpleType);
 837                 List<String> members = structDecl.getMembers(simpleType);
 838                 if (isArrayOrList(retType, retType)) {  // An array or list
 839                         println("for(int i = 0; i < retLen; i++) {");
 840                         for (int i = 0; i < members.size(); i++) {
 841                                 String prmType = checkAndGetArray(memTypes.get(i), members.get(i));
 842                                 println("retCls[retPos] = " + getSimpleType(getEnumType(prmType)) + ".class;");
 843                                 println("retClsVal[retPos++] = null;");
 844                         }
 845                         println("}");
 846                 } else {        // Just one struct element
 847                         for (int i = 0; i < members.size(); i++) {
 848                                 String prmType = checkAndGetArray(memTypes.get(i), members.get(i));
 849                                 println("retCls[retPos] = " + getSimpleType(getEnumType(prmType)) + ".class;");
 850                                 println("retClsVal[retPos++] = null;");
 851                         }
 852                 }
 853                 println("Object[] retObj = rmiCall.getStructObjects(retCls, retClsVal);");
 854                 if (isArray(retType)) {                 // An array
 855                         println(simpleType + "[] structRet = new " + simpleType + "[retLen];");
 856                         println("for(int i = 0; i < retLen; i++) {");
 857                         println("structRet[i] = new " + simpleType + "();");
 858                         println("}");
 859                 } else if (isList(retType)) {   // A list
 860                         println("List<" + simpleType + "> structRet = new ArrayList<" + simpleType + ">();");
 861                 } else
 862                         println(simpleType + " structRet = new " + simpleType + "();");
 863                 println("int retObjPos = 0;");
 864                 writeStructRetMembersJavaStub(simpleType, retType);
 865         }
 866
 867
 868         /**
 869          * HELPER: writeStdMethodBodyJavaStub() writes the standard method body in the stub class
 870          */
 871         private void writeStdMethodBodyJavaStub(InterfaceDecl intDecl, List<String> methParams,
 872                         List<String> methPrmTypes, String method, String callbackType) {
 873
 874                 checkAndWriteStructSetupJavaStub(methParams, methPrmTypes, intDecl, method);
 875                 println("int methodId = " + intDecl.getMethodNumId(method) + ";");
 876                 String retType = intDecl.getMethodType(method);
 877                 println("Class<?> retType = " + getSimpleType(getStructType(getEnumType(retType))) + ".class;");
 878                 checkAndWriteEnumTypeJavaStub(methParams, methPrmTypes);
 879                 // Generate array of parameter types
 880                 if (isStructPresent(methParams, methPrmTypes)) {
 881                         writeStructParamClassJavaStub(methParams, methPrmTypes, callbackType);
 882                 } else {
 883                         print("Class<?>[] paramCls = new Class<?>[] { ");
 884                         for (int i = 0; i < methParams.size(); i++) {
 885                                 String prmType = methPrmTypes.get(i);
 886                                 if (checkCallbackType(prmType, callbackType)) { // Check if this has callback object
 887                                         print("int.class");
 888                                 } else { // Generate normal classes if it's not a callback object
 889                                         String paramType = checkAndGetArray(methPrmTypes.get(i), methParams.get(i));
 890                                         print(getSimpleType(getEnumType(paramType)) + ".class");
 891                                 }
 892                                 // Check if this is the last element (don't print a comma)
 893                                 if (i != methParams.size() - 1) {
 894                                         print(", ");
 895                                 }
 896                         }
 897                         println(" };");
 898                         // Generate array of parameter objects
 899                         print("Object[] paramObj = new Object[] { ");
 900                         for (int i = 0; i < methParams.size(); i++) {
 901                                 String paramType = methPrmTypes.get(i);
 902                                 if (checkCallbackType(paramType, callbackType)) { // Check if this has callback object
 903                                         //if (isArray(methPrmTypes.get(i), methParams.get(i)))
 904                                         if (isArray(methParams.get(i)))
 905                                                 print(getSimpleIdentifier(methParams.get(i)) + ".length");
 906                                         else if (isList(methPrmTypes.get(i)))
 907                                                 print(getSimpleIdentifier(methParams.get(i)) + ".size()");
 908                                         else
 909                                                 print("new Integer(1)");
 910                                 } else
 911                                         print(getEnumParam(methPrmTypes.get(i), getSimpleIdentifier(methParams.get(i)), i));
 912                                 // Check if this is the last element (don't print a comma)
 913                                 if (i != methParams.size() - 1) {
 914                                         print(", ");
 915                                 }
 916                         }
 917                         println(" };");
 918                 }
 919                 // Check if this is "void"
 920                 if (retType.equals("void")) {
 921                         println("rmiCall.remoteCall(objectId, methodId, retType, null, paramCls, paramObj);");
 922                 } else { // We do have a return value
 923                         // Generate array of parameter types
 924                         if (isStructClass(getGenericType(getSimpleArrayType(retType)))) {
 925                                 writeStructReturnJavaStub(getGenericType(getSimpleArrayType(retType)), retType);
 926                         } else {
 927                                 // This is an enum type
 928                                 if (getParamCategory(getGenericType(getSimpleArrayType(retType))) == ParamCategory.ENUM) {
 929                                         println("Object retObj = rmiCall.remoteCall(objectId, methodId, retType, null, paramCls, paramObj);");
 930                                         checkAndWriteEnumRetTypeJavaStub(retType);
 931                                 } else if (getParamCategory(retType) == ParamCategory.NONPRIMITIVES) {
 932                                 // Check if the return value NONPRIMITIVES
 933                                         String retGenValType = getGenericType(retType);
 934                                         println("Class<?> retGenValType = " + retGenValType + ".class;");
 935                                         println("Object retObj = rmiCall.remoteCall(objectId, methodId, retType, retGenValType, paramCls, paramObj);");
 936                                         println("return (" + retType + ")retObj;");
 937                                 } else {
 938                                         println("Object retObj = rmiCall.remoteCall(objectId, methodId, retType, null, paramCls, paramObj);");
 939                                         println("return (" + retType + ")retObj;");
 940                                 }
 941                         }
 942                 }
 943         }
 944
 945
 946         /**
 947          * HELPER: returnGenericCallbackType() returns the callback type
 948          */
 949         private String returnGenericCallbackType(String paramType) {
 950
 951                 if (getParamCategory(paramType) == ParamCategory.NONPRIMITIVES)
 952                         return getGenericType(paramType);
 953                 else
 954                         return paramType;
 955         }
 956
 957
 958         /**
 959          * HELPER: checkCallbackType() checks the callback type
 960          */
 961         private boolean checkCallbackType(String paramType, String callbackType) {
 962
 963                 String prmType = returnGenericCallbackType(paramType);
 964                 if (callbackType == null)       // If there is no callbackType it means not a callback method
 965                         return false;
 966                 else
 967                         return callbackType.equals(prmType);
 968         }
 969
 970
 971         /**
 972          * HELPER: writeCallbackMethodBodyJavaStub() writes the callback method of the stub class
 973          */
 974         private void writeCallbackMethodBodyJavaStub(InterfaceDecl intDecl, List<String> methParams,
 975                         List<String> methPrmTypes, String method, String callbackType) {
 976
 977                 println("try {");
 978                 // Check if this is single object, array, or list of objects
 979                 for (int i = 0; i < methParams.size(); i++) {
 980                         String paramType = methPrmTypes.get(i);
 981                         if (checkCallbackType(paramType, callbackType)) { // Check if this has callback object
 982                                 String param = methParams.get(i);
 983                                 if (isArrayOrList(paramType, param)) {  // Generate loop
 984                                         println("for (" + getGenericType(paramType) + " cb : " + getSimpleIdentifier(param) + ") {");
 985                                         println(callbackType + "_CallbackSkeleton skel" + i + " = new " + callbackType + "_CallbackSkeleton(cb, objIdCnt++);");
 986                                 } else
 987                                         println(callbackType + "_CallbackSkeleton skel" + i + " = new " + callbackType + "_CallbackSkeleton(" +
 988                                                 getSimpleIdentifier(param) + ", objIdCnt++);");
 989                                 println("listCallbackObj.add(skel" + i + ");");
 990                                 if (isArrayOrList(paramType, param))
 991                                         println("}");
 992                         }
 993                 }
 994                 print("}");
 995                 println(" catch (Exception ex) {");
 996                 println("ex.printStackTrace();");
 997                 println("throw new Error(\"Exception when generating skeleton objects!\");");
 998                 println("}\n");
 999         }
1000
1001
1002         /**
1003          * HELPER: writeMethodJavaStub() writes the methods of the stub class
1004          */
1005         private void writeMethodJavaStub(Collection<String> methods, InterfaceDecl intDecl, Set<String> callbackClasses) {
1006
1007                 boolean isDefined = false;
1008                 for (String method : methods) {
1009
1010                         List<String> methParams = intDecl.getMethodParams(method);
1011                         List<String> methPrmTypes = intDecl.getMethodParamTypes(method);
1012                         print("public " + intDecl.getMethodType(method) + " " +
1013                                 intDecl.getMethodId(method) + "(");
1014                         boolean isCallbackMethod = false;
1015                         String callbackType = null;
1016                         for (int i = 0; i < methParams.size(); i++) {
1017
1018                                 String paramType = returnGenericCallbackType(methPrmTypes.get(i));
1019                                 // Check if this has callback object
1020                                 if (callbackClasses.contains(paramType)) {
1021                                         isCallbackMethod = true;
1022                                         callbackType = paramType;
1023                                         // Even if there're 2 callback arguments, we expect them to be of the same interface
1024                                 }
1025                                 print(methPrmTypes.get(i) + " " + methParams.get(i));
1026                                 // Check if this is the last element (don't print a comma)
1027                                 if (i != methParams.size() - 1) {
1028                                         print(", ");
1029                                 }
1030                         }
1031                         println(") {");
1032                         // Now, write the body of stub!
1033                         if (isCallbackMethod)
1034                                 writeCallbackMethodBodyJavaStub(intDecl, methParams, methPrmTypes, method, callbackType);
1035                         //else
1036                         writeStdMethodBodyJavaStub(intDecl, methParams, methPrmTypes, method, callbackType);
1037                         println("}\n");
1038                         // Write the init callback helper method
1039                         if (isCallbackMethod && !isDefined) {
1040                                 writeInitCallbackJavaStub(callbackType, intDecl);
1041                                 isDefined = true;
1042                         }
1043                 }
1044         }
1045
1046
1047         /**
1048          * generateJavaStubClasses() generate stubs based on the methods list in Java
1049          */
1050         public void generateJavaStubClasses() throws IOException {
1051
1052                 // Create a new directory
1053                 String path = createDirectories(dir, subdir);
1054                 for (String intface : mapIntfacePTH.keySet()) {
1055
1056                         Map<String,Set<String>> mapNewIntMethods = mapInt2NewInts.get(intface);
1057                         for (Map.Entry<String,Set<String>> intMeth : mapNewIntMethods.entrySet()) {
1058
1059                                 // Open a new file to write into
1060                                 String newIntface = intMeth.getKey();
1061                                 String newStubClass = newIntface + "_Stub";
1062                                 FileWriter fw = new FileWriter(path + "/" + newStubClass + ".java");
1063                                 pw = new PrintWriter(new BufferedWriter(fw));
1064                                 DeclarationHandler decHandler = mapIntDeclHand.get(intface);
1065                                 InterfaceDecl intDecl = (InterfaceDecl) decHandler.getInterfaceDecl(intface);
1066                                 // Pass in set of methods and get import classes
1067                                 Set<String> methods = intMeth.getValue();
1068                                 Set<String> importClasses = getImportClasses(methods, intDecl);
1069                                 List<String> stdImportClasses = getStandardJavaImportClasses();
1070                                 List<String> allImportClasses = getAllLibClasses(stdImportClasses, importClasses);
1071                                 printImportStatements(allImportClasses); println("");
1072                                 // Find out if there are callback objects
1073                                 Set<String> callbackClasses = getCallbackClasses(methods, intDecl);
1074                                 boolean callbackExist = !callbackClasses.isEmpty();
1075                                 // Write class header
1076                                 println("public class " + newStubClass + " implements " + newIntface + " {\n");
1077                                 // Write properties
1078                                 writePropertiesJavaStub(intface, newIntface, callbackExist, callbackClasses);
1079                                 // Write constructor
1080                                 writeConstructorJavaStub(intface, newStubClass, callbackExist, callbackClasses);
1081                                 // Write methods
1082                                 writeMethodJavaStub(intMeth.getValue(), intDecl, callbackClasses);
1083                                 println("}");
1084                                 pw.close();
1085                                 System.out.println("IoTCompiler: Generated stub class " + newStubClass + ".java...");
1086                         }
1087                 }
1088         }
1089
1090
1091         /**
1092          * HELPER: writePropertiesJavaCallbackStub() writes the properties of the callback stub class
1093          */
1094         private void writePropertiesJavaCallbackStub(String intface, String newIntface, boolean callbackExist, Set<String> callbackClasses) {
1095
1096                 println("private IoTRMICall rmiCall;");
1097                 println("private String address;");
1098                 println("private int[] ports;\n");
1099                 // Get the object Id
1100                 println("private int objectId = 0;");
1101                 if (callbackExist) {
1102                 // We assume that each class only has one callback interface for now
1103                         Iterator it = callbackClasses.iterator();
1104                         String callbackType = (String) it.next();
1105                         println("// Callback properties");
1106                         println("private IoTRMIObject rmiObj;");
1107                         println("List<" + callbackType + "> listCallbackObj;");
1108                         println("private static int objIdCnt = 0;");
1109                         // Generate permission stuff for callback stubs
1110                         DeclarationHandler decHandler = mapIntDeclHand.get(callbackType);
1111                         InterfaceDecl intDecl = (InterfaceDecl) decHandler.getInterfaceDecl(callbackType);
1112                         writePropertiesJavaPermission(callbackType, intDecl);
1113                 }
1114                 println("\n");
1115         }
1116
1117
1118         /**
1119          * HELPER: writeConstructorJavaCallbackStub() writes the constructor of the callback stub class
1120          */
1121         private void writeConstructorJavaCallbackStub(String intface, String newStubClass, boolean callbackExist, Set<String> callbackClasses) {
1122
1123                 // TODO: If we want callback in callback, then we need to add address and port initializations
1124                 println("public " + newStubClass + "(IoTRMICall _rmiCall, int _objectId) throws Exception {");
1125                 println("objectId = _objectId;");
1126                 println("rmiCall = _rmiCall;");
1127                 if (callbackExist) {
1128                         Iterator it = callbackClasses.iterator();
1129                         String callbackType = (String) it.next();
1130                         writeConstructorJavaPermission(intface);
1131                         println("listCallbackObj = new ArrayList<" + callbackType + ">();");
1132                         println("___initCallBack();");
1133                         println("// TODO: Add address and port initialization here if we want callback in callback!");
1134                 }
1135                 println("}\n");
1136         }
1137
1138
1139         /**
1140          * generateJavaCallbackStubClasses() generate callback stubs based on the methods list in Java
1141          * <p>
1142          * Callback stubs gets the IoTRMICall objects from outside of the class as contructor input
1143          * because all these stubs are populated by the class that takes in this object as a callback
1144          * object. In such a class, we only use one socket, hence one IoTRMICall, for all callback objects.
1145          */
1146         public void generateJavaCallbackStubClasses() throws IOException {
1147
1148                 // Create a new directory
1149                 String path = createDirectories(dir, subdir);
1150                 for (String intface : mapIntfacePTH.keySet()) {
1151
1152                         Map<String,Set<String>> mapNewIntMethods = mapInt2NewInts.get(intface);
1153                         for (Map.Entry<String,Set<String>> intMeth : mapNewIntMethods.entrySet()) {
1154
1155                                 // Open a new file to write into
1156                                 String newIntface = intMeth.getKey();
1157                                 String newStubClass = newIntface + "_CallbackStub";
1158                                 FileWriter fw = new FileWriter(path + "/" + newStubClass + ".java");
1159                                 pw = new PrintWriter(new BufferedWriter(fw));
1160                                 DeclarationHandler decHandler = mapIntDeclHand.get(intface);
1161                                 InterfaceDecl intDecl = (InterfaceDecl) decHandler.getInterfaceDecl(intface);
1162                                 // Pass in set of methods and get import classes
1163                                 Set<String> methods = intMeth.getValue();
1164                                 Set<String> importClasses = getImportClasses(methods, intDecl);
1165                                 List<String> stdImportClasses = getStandardJavaImportClasses();
1166                                 List<String> allImportClasses = getAllLibClasses(stdImportClasses, importClasses);
1167                                 printImportStatements(allImportClasses); println("");
1168                                 // Find out if there are callback objects
1169                                 Set<String> callbackClasses = getCallbackClasses(methods, intDecl);
1170                                 boolean callbackExist = !callbackClasses.isEmpty();
1171                                 // Write class header
1172                                 println("public class " + newStubClass + " implements " + newIntface + " {\n");
1173                                 // Write properties
1174                                 writePropertiesJavaCallbackStub(intface, newIntface, callbackExist, callbackClasses);
1175                                 // Write constructor
1176                                 writeConstructorJavaCallbackStub(intface, newStubClass, callbackExist, callbackClasses);
1177                                 // Write methods
1178                                 // TODO: perhaps need to generate callback for callback
1179                                 writeMethodJavaStub(intMeth.getValue(), intDecl, callbackClasses);
1180                                 println("}");
1181                                 pw.close();
1182                                 System.out.println("IoTCompiler: Generated callback stub class " + newStubClass + ".java...");
1183                         }
1184                 }
1185         }
1186
1187
1188         /**
1189          * HELPER: writePropertiesJavaSkeleton() writes the properties of the skeleton class
1190          */
1191         private void writePropertiesJavaSkeleton(String intface, boolean callbackExist, InterfaceDecl intDecl) {
1192
1193                 println("private " + intface + " mainObj;");
1194                 //println("private int ports;");
1195                 println("private IoTRMIObject rmiObj;\n");
1196                 // Callback
1197                 if (callbackExist) {
1198                         println("private static int objIdCnt = 0;");
1199                         println("private IoTRMICall rmiCall;");
1200                 }
1201                 writePropertiesJavaPermission(intface, intDecl);
1202                 println("\n");
1203         }
1204
1205
1206         /**
1207          * HELPER: writeStructPermissionJavaSkeleton() writes permission for struct helper
1208          */
1209         private void writeStructPermissionJavaSkeleton(Collection<String> methods, InterfaceDecl intDecl, String intface) {
1210
1211                 // Use this set to handle two same methodIds
1212                 for (String method : methods) {
1213                         List<String> methParams = intDecl.getMethodParams(method);
1214                         List<String> methPrmTypes = intDecl.getMethodParamTypes(method);
1215                         // Check for params with structs
1216                         for (int i = 0; i < methParams.size(); i++) {
1217                                 String paramType = methPrmTypes.get(i);
1218                                 String param = methParams.get(i);
1219                                 String simpleType = getGenericType(paramType);
1220                                 if (isStructClass(simpleType)) {
1221                                         int methodNumId = intDecl.getMethodNumId(method);
1222                                         String helperMethod = methodNumId + "struct" + i;
1223                                         int methodHelperNumId = intDecl.getHelperMethodNumId(helperMethod);
1224                                         // Iterate over interfaces to give permissions to
1225                                         Map<String,Set<String>> mapNewIntMethods = mapInt2NewInts.get(intface);
1226                                         for (Map.Entry<String,Set<String>> intMeth : mapNewIntMethods.entrySet()) {
1227                                                 String newIntface = intMeth.getKey();
1228                                                 int newObjectId = getNewIntfaceObjectId(newIntface);
1229                                                 println("set" + newObjectId + "Allowed.add(" + methodHelperNumId + ");");
1230                                         }
1231                                 }
1232                         }
1233                 }
1234         }
1235
1236
1237         /**
1238          * HELPER: writeConstructorJavaSkeleton() writes the constructor of the skeleton class
1239          */
1240         private void writeConstructorJavaSkeleton(String newSkelClass, String intface, InterfaceDecl intDecl, Collection<String> methods, boolean callbackExist) {
1241
1242                 println("public " + newSkelClass + "(" + intface + " _mainObj, int _port) throws Exception {");
1243                 println("mainObj = _mainObj;");
1244                 println("rmiObj = new IoTRMIObject(_port);");
1245                 // Generate permission control initialization
1246                 writeConstructorJavaPermission(intface);
1247                 writeJavaInitCallbackPermission(intface, intDecl, callbackExist);
1248                 writeStructPermissionJavaSkeleton(methods, intDecl, intface);
1249                 println("___waitRequestInvokeMethod();");
1250                 println("}\n");
1251         }
1252
1253
1254         /**
1255          * HELPER: writeStdMethodBodyJavaSkeleton() writes the standard method body in the skeleton class
1256          */
1257         private void writeStdMethodBodyJavaSkeleton(List<String> methParams, String methodId, String methodType) {
1258
1259                 if (methodType.equals("void"))
1260                         print("mainObj." + methodId + "(");
1261                 else
1262                         print("return mainObj." + methodId + "(");
1263                 for (int i = 0; i < methParams.size(); i++) {
1264
1265                         print(getSimpleIdentifier(methParams.get(i)));
1266                         // Check if this is the last element (don't print a comma)
1267                         if (i != methParams.size() - 1) {
1268                                 print(", ");
1269                         }
1270                 }
1271                 println(");");
1272         }
1273
1274
1275         /**
1276          * HELPER: writeInitCallbackJavaSkeleton() writes the init callback method for skeleton class
1277          */
1278         private void writeInitCallbackJavaSkeleton(boolean callbackSkeleton) {
1279
1280                 // This is a callback skeleton generation
1281                 if (callbackSkeleton)
1282                         println("public void ___regCB(IoTRMIObject rmiObj) throws IOException {");
1283                 else
1284                         println("public void ___regCB() throws IOException {");
1285                 print("Object[] paramObj = rmiObj.getMethodParams(new Class<?>[] { int.class, String.class, int.class },");
1286                 println("new Class<?>[] { null, null, null });");
1287                 println("rmiCall = new IoTRMICall((int) paramObj[0], (String) paramObj[1], (int) paramObj[2]);");
1288                 println("}\n");
1289         }
1290
1291
1292         /**
1293          * HELPER: writeMethodJavaSkeleton() writes the method of the skeleton class
1294          */
1295         private void writeMethodJavaSkeleton(Collection<String> methods, InterfaceDecl intDecl, Set<String> callbackClasses,
1296                         boolean callbackSkeleton) {
1297
1298                 boolean isDefined = false;
1299                 for (String method : methods) {
1300
1301                         List<String> methParams = intDecl.getMethodParams(method);
1302                         List<String> methPrmTypes = intDecl.getMethodParamTypes(method);
1303                         String methodId = intDecl.getMethodId(method);
1304                         print("public " + intDecl.getMethodType(method) + " " + methodId + "(");
1305                         boolean isCallbackMethod = false;
1306                         String callbackType = null;
1307                         for (int i = 0; i < methParams.size(); i++) {
1308
1309                                 String origParamType = methPrmTypes.get(i);
1310                                 String paramType = checkAndGetParamClass(origParamType);
1311                                 if (callbackClasses.contains(origParamType)) { // Check if this has callback object
1312                                         isCallbackMethod = true;
1313                                         callbackType = origParamType;
1314                                 }
1315                                 print(paramType + " " + methParams.get(i));
1316                                 // Check if this is the last element (don't print a comma)
1317                                 if (i != methParams.size() - 1) {
1318                                         print(", ");
1319                                 }
1320                         }
1321                         println(") {");
1322                         // Now, write the body of skeleton!
1323                         writeStdMethodBodyJavaSkeleton(methParams, methodId, intDecl.getMethodType(method));
1324                         println("}\n");
1325                         if (isCallbackMethod && !isDefined) {   // Make sure that this function is only defined once!
1326                                 writeInitCallbackJavaSkeleton(callbackSkeleton);
1327                                 isDefined = true;
1328                         }
1329                 }
1330         }
1331
1332
1333         /**
1334          * HELPER: writeCallbackJavaStubGeneration() writes the callback stub generation part
1335          */
1336         private Map<Integer,String> writeCallbackJavaStubGeneration(List<String> methParams, List<String> methPrmTypes,
1337                         String callbackType, boolean isStructMethod) {
1338
1339                 Map<Integer,String> mapStubParam = new HashMap<Integer,String>();
1340                 String offsetPfx = "";
1341                 if (isStructMethod)
1342                         offsetPfx = "offset";
1343                 // Iterate over callback objects
1344                 for (int i = 0; i < methParams.size(); i++) {
1345                         String paramType = methPrmTypes.get(i);
1346                         String param = methParams.get(i);
1347                         if (checkCallbackType(paramType, callbackType)) { // Check if this has callback object
1348                                 String exchParamType = checkAndGetParamClass(getGenericType(paramType));
1349                                 // Print array if this is array or list if this is a list of callback objects
1350                                 if (isArray(param)) {
1351                                         println("int numStubs" + i + " = (int) paramObj[" + offsetPfx + i + "];");
1352                                         println(exchParamType + "[] stub" + i + " = new " + exchParamType + "[numStubs" + i + "];");
1353                                 } else if (isList(paramType)) {
1354                                         println("int numStubs" + i + " = (int) paramObj[" + offsetPfx + i + "];");
1355                                         println("List<" + exchParamType + "> stub" + i + " = new ArrayList<" + exchParamType + ">();");
1356                                 } else {
1357                                         println(exchParamType + " stub" + i + " = new " + exchParamType + "_CallbackStub(rmiCall, objIdCnt);");
1358                                         println("objIdCnt++;");
1359                                 }
1360                         }
1361                         // Generate a loop if needed
1362                         if (checkCallbackType(paramType, callbackType)) { // Check if this has callback object
1363                                 String exchParamType = checkAndGetParamClass(getGenericType(paramType));
1364                                 if (isArray(param)) {
1365                                         println("for (int objId = 0; objId < numStubs" + i + "; objId++) {");
1366                                         println("stub" + i + "[objId] = new " + exchParamType + "_CallbackStub(rmiCall, objIdCnt);");
1367                                         println("objIdCnt++;");
1368                                         println("}");
1369                                 } else if (isList(paramType)) {
1370                                         println("for (int objId = 0; objId < numStubs" + i + "; objId++) {");
1371                                         println("stub" + i + ".add(new " + exchParamType + "_CallbackStub(rmiCall, objIdCnt));");
1372                                         println("objIdCnt++;");
1373                                         println("}");
1374                                 }
1375                                 mapStubParam.put(i, "stub" + i);        // List of all stub parameters
1376                         }
1377                 }
1378                 return mapStubParam;
1379         }
1380
1381
1382         /**
1383          * HELPER: checkAndWriteEnumTypeJavaSkeleton() writes the enum type (convert from enum to int)
1384          */
1385         private void checkAndWriteEnumTypeJavaSkeleton(List<String> methParams, List<String> methPrmTypes, boolean isStructMethod) {
1386
1387                 String offsetPfx = "";
1388                 if (isStructMethod)
1389                         offsetPfx = "offset";
1390                 // Iterate and find enum declarations
1391                 boolean printed = false;
1392                 for (int i = 0; i < methParams.size(); i++) {
1393                         String paramType = methPrmTypes.get(i);
1394                         String param = methParams.get(i);
1395                         String simpleType = getGenericType(paramType);
1396                         if (isEnumClass(simpleType)) {
1397                         // Check if this is enum type
1398                                 println("int paramInt" + i + "[] = (int[]) paramObj[" + offsetPfx + i + "];");
1399                                 if (!printed) {
1400                                         println(simpleType + "[] enumVals = " + simpleType + ".values();");
1401                                         printed = true;
1402                                 }
1403                                 if (isArray(param)) {   // An array
1404                                         println("int len" + i + " = paramInt" + i + ".length;");
1405                                         println(simpleType + "[] paramEnum" + i + " = new " + simpleType + "[len" + i + "];");
1406                                         println("for (int i = 0; i < len" + i + "; i++) {");
1407                                         println("paramEnum" + i + "[i] = enumVals[paramInt" + i + "[i]];");
1408                                         println("}");
1409                                 } else if (isList(paramType)) { // A list
1410                                         println("int len" + i + " = paramInt" + i + ".length;");
1411                                         println("List<" + simpleType + "> paramEnum" + i + " = new ArrayList<" + simpleType + ">();");
1412                                         println("for (int i = 0; i < len" + i + "; i++) {");
1413                                         println("paramEnum" + i + ".add(enumVals[paramInt" + i + "[i]]);");
1414                                         println("}");
1415                                 } else {        // Just one element
1416                                         println(simpleType + " paramEnum" + i + " = enumVals[paramInt" + i + "[0]];");
1417                                 }
1418                         }
1419                 }
1420         }
1421
1422
1423         /**
1424          * HELPER: checkAndWriteEnumRetTypeJavaSkeleton() writes the enum return type (convert from enum to int)
1425          */
1426         private void checkAndWriteEnumRetTypeJavaSkeleton(String retType, String methodId) {
1427
1428                 // Strips off array "[]" for return type
1429                 String pureType = getSimpleArrayType(getGenericType(retType));
1430                 // Take the inner type of generic
1431                 if (getParamCategory(retType) == ParamCategory.NONPRIMITIVES)
1432                         pureType = getGenericType(retType);
1433                 if (isEnumClass(pureType)) {
1434                 // Check if this is enum type
1435                         // Enum decoder
1436                         if (isArray(retType)) {                 // An array
1437                                 print(pureType + "[] retEnum = " + methodId + "(");
1438                         } else if (isList(retType)) {   // A list
1439                                 print("List<" + pureType + "> retEnum = " + methodId + "(");
1440                         } else {        // Just one element
1441                                 print(pureType + " retEnum = " + methodId + "(");
1442                         }
1443                 }
1444         }
1445
1446
1447         /**
1448          * HELPER: checkAndWriteEnumRetConvJavaSkeleton() writes the enum return type (convert from enum to int)
1449          */
1450         private void checkAndWriteEnumRetConvJavaSkeleton(String retType) {
1451
1452                 // Strips off array "[]" for return type
1453                 String pureType = getSimpleArrayType(getGenericType(retType));
1454                 // Take the inner type of generic
1455                 if (getParamCategory(retType) == ParamCategory.NONPRIMITIVES)
1456                         pureType = getGenericType(retType);
1457                 if (isEnumClass(pureType)) {
1458                 // Check if this is enum type
1459                         if (isArray(retType)) { // An array
1460                                 println("int retLen = retEnum.length;");
1461                                 println("int[] retEnumVal = new int[retLen];");
1462                                 println("for (int i = 0; i < retLen; i++) {");
1463                                 println("retEnumVal[i] = retEnum[i].ordinal();");
1464                                 println("}");
1465                         } else if (isList(retType)) {   // A list
1466                                 println("int retLen = retEnum.size();");
1467                                 println("int[] retEnumVal = new int[retLen];");
1468                                 println("for (int i = 0; i < retLen; i++) {");
1469                                 println("retEnumVal[i] = retEnum.get(i).ordinal();");
1470                                 println("}");
1471                         } else {        // Just one element
1472                                 println("int[] retEnumVal = new int[1];");
1473                                 println("retEnumVal[0] = retEnum.ordinal();");
1474                         }
1475                         println("Object retObj = retEnumVal;");
1476                 }
1477         }
1478
1479
1480         /**
1481          * HELPER: writeLengthStructParamClassSkeleton() writes lengths of params
1482          */
1483         private void writeLengthStructParamClassSkeleton(List<String> methParams, List<String> methPrmTypes,
1484                         String method, InterfaceDecl intDecl) {
1485
1486                 // Iterate and find struct declarations - count number of params
1487                 for (int i = 0; i < methParams.size(); i++) {
1488                         String paramType = methPrmTypes.get(i);
1489                         String param = methParams.get(i);
1490                         String simpleType = getGenericType(paramType);
1491                         if (isStructClass(simpleType)) {
1492                                 int members = getNumOfMembers(simpleType);
1493                                 print(Integer.toString(members) + "*");
1494                                 int methodNumId = intDecl.getMethodNumId(method);
1495                                 print("struct" + methodNumId + "Size" + i);
1496                         } else
1497                                 print("1");
1498                         if (i != methParams.size() - 1) {
1499                                 print("+");
1500                         }
1501                 }
1502         }
1503
1504
1505         /**
1506          * HELPER: writeStructMembersJavaSkeleton() writes member parameters of struct
1507          */
1508         private void writeStructMembersJavaSkeleton(String simpleType, String paramType,
1509                         String param, String method, InterfaceDecl intDecl, int iVar) {
1510
1511                 // Get the struct declaration for this struct and generate initialization code
1512                 StructDecl structDecl = getStructDecl(simpleType);
1513                 List<String> memTypes = structDecl.getMemberTypes(simpleType);
1514                 List<String> members = structDecl.getMembers(simpleType);
1515                 if (isArrayOrList(paramType, param)) {  // An array or list
1516                         int methodNumId = intDecl.getMethodNumId(method);
1517                         String counter = "struct" + methodNumId + "Size" + iVar;
1518                         println("for(int i = 0; i < " + counter + "; i++) {");
1519                 }
1520                 if (isArrayOrList(paramType, param)) {  // An array or list
1521                         for (int i = 0; i < members.size(); i++) {
1522                                 String prmType = checkAndGetArray(memTypes.get(i), members.get(i));
1523                                 println("paramCls[pos] = " + getSimpleType(getEnumType(prmType)) + ".class;");
1524                                 println("paramClsGen[pos++] = null;");
1525                         }
1526                         println("}");
1527                 } else {        // Just one struct element
1528                         for (int i = 0; i < members.size(); i++) {
1529                                 String prmType = checkAndGetArray(memTypes.get(i), members.get(i));
1530                                 println("paramCls[pos] = " + getSimpleType(getEnumType(prmType)) + ".class;");
1531                                 println("paramClsGen[pos++] = null;");
1532                         }
1533                 }
1534         }
1535
1536
1537         /**
1538          * HELPER: writeStructMembersInitJavaSkeleton() writes member parameters initialization of struct
1539          */
1540         private void writeStructMembersInitJavaSkeleton(InterfaceDecl intDecl, List<String> methParams,
1541                         List<String> methPrmTypes, String method) {
1542
1543                 println("int objPos = 0;");
1544                 for (int i = 0; i < methParams.size(); i++) {
1545                         String paramType = methPrmTypes.get(i);
1546                         String param = methParams.get(i);
1547                         String simpleType = getGenericType(paramType);
1548                         if (isStructClass(simpleType)) {
1549                                 int methodNumId = intDecl.getMethodNumId(method);
1550                                 String counter = "struct" + methodNumId + "Size" + i;
1551                                 // Declaration
1552                                 if (isArray(param)) {                   // An array
1553                                         println(simpleType + "[] paramStruct" + i + " = new " + simpleType + "[" + counter + "];");
1554                                         println("for(int i = 0; i < " + counter + "; i++) {");
1555                                         println("paramStruct" + i + "[i] = new " + simpleType + "();");
1556                                         println("}");
1557                                 } else if (isList(paramType)) { // A list
1558                                         println("List<" + simpleType + "> paramStruct" + i + " = new ArrayList<" + simpleType + ">();");
1559                                 } else
1560                                         println(simpleType + " paramStruct" + i + " = new " + simpleType + "();");
1561                                 // Initialize members
1562                                 StructDecl structDecl = getStructDecl(simpleType);
1563                                 List<String> members = structDecl.getMembers(simpleType);
1564                                 List<String> memTypes = structDecl.getMemberTypes(simpleType);
1565                                 if (isArrayOrList(paramType, param)) {  // An array or list
1566                                         println("for(int i = 0; i < " + counter + "; i++) {");
1567                                 }
1568                                 if (isArray(param)) {   // An array
1569                                         for (int j = 0; j < members.size(); j++) {
1570                                                 String prmType = checkAndGetArray(memTypes.get(j), members.get(j));
1571                                                 print("paramStruct" + i + "[i]." + getSimpleIdentifier(members.get(j)));
1572                                                 println(" = (" + getSimpleType(getEnumType(prmType)) + ") paramObj[objPos++];");
1573                                         }
1574                                         println("}");
1575                                 } else if (isList(paramType)) { // A list
1576                                         println(simpleType + " paramStructMem = new " + simpleType + "();");
1577                                         for (int j = 0; j < members.size(); j++) {
1578                                                 String prmType = checkAndGetArray(memTypes.get(j), members.get(j));
1579                                                 print("paramStructMem." + getSimpleIdentifier(members.get(j)));
1580                                                 println(" = (" + getSimpleType(getEnumType(prmType)) + ") paramObj[objPos++];");
1581                                         }
1582                                         println("paramStruct" + i + ".add(paramStructMem);");
1583                                         println("}");
1584                                 } else {        // Just one struct element
1585                                         for (int j = 0; j < members.size(); j++) {
1586                                                 String prmType = checkAndGetArray(memTypes.get(j), members.get(j));
1587                                                 print("paramStruct" + i + "." + getSimpleIdentifier(members.get(j)));
1588                                                 println(" = (" + getSimpleType(getEnumType(prmType)) + ") paramObj[objPos++];");
1589                                         }
1590                                 }
1591                         } else {
1592                                 // Take offsets of parameters
1593                                 println("int offset" + i +" = objPos++;");
1594                         }
1595                 }
1596         }
1597
1598
1599         /**
1600          * HELPER: writeStructReturnJavaSkeleton() writes struct for return statement
1601          */
1602         private void writeStructReturnJavaSkeleton(String simpleType, String retType) {
1603
1604                 // Minimum retLen is 1 if this is a single struct object
1605                 if (isArray(retType))
1606                         println("int retLen = retStruct.length;");
1607                 else if (isList(retType))
1608                         println("int retLen = retStruct.size();");
1609                 else    // Just single struct object
1610                         println("int retLen = 1;");
1611                 println("Object retLenObj = retLen;");
1612                 println("rmiObj.sendReturnObj(retLenObj);");
1613                 int numMem = getNumOfMembers(simpleType);
1614                 println("Class<?>[] retCls = new Class<?>[" + numMem + "*retLen];");
1615                 println("Object[] retObj = new Object[" + numMem + "*retLen];");
1616                 println("int retPos = 0;");
1617                 // Get the struct declaration for this struct and generate initialization code
1618                 StructDecl structDecl = getStructDecl(simpleType);
1619                 List<String> memTypes = structDecl.getMemberTypes(simpleType);
1620                 List<String> members = structDecl.getMembers(simpleType);
1621                 if (isArray(retType)) { // An array or list
1622                         println("for(int i = 0; i < retLen; i++) {");
1623                         for (int i = 0; i < members.size(); i++) {
1624                                 String prmType = checkAndGetArray(memTypes.get(i), members.get(i));
1625                                 println("retCls[retPos] = " + getSimpleType(getEnumType(prmType)) + ".class;");
1626                                 print("retObj[retPos++] = retStruct[i].");
1627                                 print(getEnumParam(memTypes.get(i), getSimpleIdentifier(members.get(i)), i));
1628                                 println(";");
1629                         }
1630                         println("}");
1631                 } else if (isList(retType)) {   // An array or list
1632                         println("for(int i = 0; i < retLen; i++) {");
1633                         for (int i = 0; i < members.size(); i++) {
1634                                 String prmType = checkAndGetArray(memTypes.get(i), members.get(i));
1635                                 println("retCls[retPos] = " + getSimpleType(getEnumType(prmType)) + ".class;");
1636                                 print("retObj[retPos++] = retStruct.get(i).");
1637                                 print(getEnumParam(memTypes.get(i), getSimpleIdentifier(members.get(i)), i));
1638                                 println(";");
1639                         }
1640                         println("}");
1641                 } else {        // Just one struct element
1642                         for (int i = 0; i < members.size(); i++) {
1643                                 String prmType = checkAndGetArray(memTypes.get(i), members.get(i));
1644                                 println("retCls[retPos] = " + getSimpleType(getEnumType(prmType)) + ".class;");
1645                                 print("retObj[retPos++] = retStruct.");
1646                                 print(getEnumParam(memTypes.get(i), getSimpleIdentifier(members.get(i)), i));
1647                                 println(";");
1648                         }
1649                 }
1650
1651         }
1652
1653
1654         /**
1655          * HELPER: writeMethodHelperReturnJavaSkeleton() writes return statement part in skeleton
1656          */
1657         private void writeMethodHelperReturnJavaSkeleton(InterfaceDecl intDecl, List<String> methParams,
1658                         List<String> methPrmTypes, String method, boolean isCallbackMethod, String callbackType,
1659                         boolean isStructMethod) {
1660
1661                 checkAndWriteEnumTypeJavaSkeleton(methParams, methPrmTypes, isStructMethod);
1662                 Map<Integer,String> mapStubParam = null;
1663                 if (isCallbackMethod) {
1664                         println("try {");
1665                         mapStubParam = writeCallbackJavaStubGeneration(methParams, methPrmTypes, callbackType, isStructMethod);
1666                 }
1667                 // Check if this is "void"
1668                 String retType = intDecl.getMethodType(method);
1669                 if (retType.equals("void")) {
1670                         print(intDecl.getMethodId(method) + "(");
1671                 } else if (isEnumClass(getSimpleArrayType(getGenericType(retType)))) {  // Enum type
1672                         checkAndWriteEnumRetTypeJavaSkeleton(retType, intDecl.getMethodId(method));
1673                 } else if (isStructClass(getSimpleArrayType(getGenericType(retType)))) {        // Struct type
1674                         print(retType + " retStruct = " + intDecl.getMethodId(method) + "(");
1675                 } else { // We do have a return value
1676                         print("Object retObj = " + intDecl.getMethodId(method) + "(");
1677                 }
1678                 for (int i = 0; i < methParams.size(); i++) {
1679
1680                         String paramType = methPrmTypes.get(i);
1681                         if (isCallbackMethod && checkCallbackType(paramType, callbackType)) {
1682                                 print(mapStubParam.get(i));     // Get the callback parameter
1683                         } else if (isEnumClass(getGenericType(paramType))) { // Enum class
1684                                 print(getEnumParam(paramType, methParams.get(i), i));
1685                         } else if (isStructClass(getGenericType(paramType))) {
1686                                 print("paramStruct" + i);
1687                         } else {
1688                                 String prmType = checkAndGetArray(paramType, methParams.get(i));
1689                                 if (isStructMethod)
1690                                         print("(" + prmType + ") paramObj[offset" + i + "]");
1691                                 else
1692                                         print("(" + prmType + ") paramObj[" + i + "]");
1693                         }
1694                         if (i != methParams.size() - 1)
1695                                 print(", ");
1696                 }
1697                 println(");");
1698                 if (!retType.equals("void")) {
1699                         if (isEnumClass(getSimpleArrayType(getGenericType(retType)))) { // Enum type
1700                                 checkAndWriteEnumRetConvJavaSkeleton(retType);
1701                                 println("rmiObj.sendReturnObj(retObj);");
1702                         } else if (isStructClass(getSimpleArrayType(getGenericType(retType)))) { // Struct type
1703                                 writeStructReturnJavaSkeleton(getSimpleArrayType(getGenericType(retType)), retType);
1704                                 println("rmiObj.sendReturnObj(retCls, retObj);");
1705                         } else
1706                                 println("rmiObj.sendReturnObj(retObj);");
1707                 }
1708                 if (isCallbackMethod) { // Catch exception if this is callback
1709                         print("}");
1710                         println(" catch(Exception ex) {");
1711                         println("ex.printStackTrace();");
1712                         println("throw new Error(\"Exception from callback object instantiation!\");");
1713                         println("}");
1714                 }
1715         }
1716
1717
1718         /**
1719          * HELPER: writeMethodHelperStructJavaSkeleton() writes the struct in skeleton
1720          */
1721         private void writeMethodHelperStructJavaSkeleton(InterfaceDecl intDecl, List<String> methParams,
1722                         List<String> methPrmTypes, String method, Set<String> callbackClasses) {
1723
1724                 // Generate array of parameter objects
1725                 boolean isCallbackMethod = false;
1726                 String callbackType = null;
1727                 print("int paramLen = ");
1728                 writeLengthStructParamClassSkeleton(methParams, methPrmTypes, method, intDecl);
1729                 println(";");
1730                 println("Class<?>[] paramCls = new Class<?>[paramLen];");
1731                 println("Class<?>[] paramClsGen = new Class<?>[paramLen];");
1732                 println("int pos = 0;");
1733                 // Iterate again over the parameters
1734                 for (int i = 0; i < methParams.size(); i++) {
1735                         String paramType = methPrmTypes.get(i);
1736                         String param = methParams.get(i);
1737                         String simpleType = getGenericType(paramType);
1738                         if (isStructClass(simpleType)) {
1739                                 writeStructMembersJavaSkeleton(simpleType, paramType, param, method, intDecl, i);
1740                         } else {
1741                                 String prmType = returnGenericCallbackType(methPrmTypes.get(i));
1742                                 if (callbackClasses.contains(prmType)) {
1743                                         isCallbackMethod = true;
1744                                         callbackType = prmType;
1745                                         println("paramCls[pos] = int.class;");
1746                                         println("paramClsGen[pos++] = null;");
1747                                 } else {        // Generate normal classes if it's not a callback object
1748                                         String paramTypeOth = checkAndGetArray(methPrmTypes.get(i), methParams.get(i));
1749                                         println("paramCls[pos] = " + getSimpleType(getEnumType(paramTypeOth)) + ".class;");
1750                                         print("paramClsGen[pos++] = ");
1751                                         String prmTypeOth = methPrmTypes.get(i);
1752                                         if (getParamCategory(prmTypeOth) == ParamCategory.NONPRIMITIVES)
1753                                                 println(getTypeOfGeneric(prmType)[0] + ".class;");
1754                                         else
1755                                                 println("null;");
1756                                 }
1757                         }
1758                 }
1759                 println("Object[] paramObj = rmiObj.getMethodParams(paramCls, paramClsGen);");
1760                 writeStructMembersInitJavaSkeleton(intDecl, methParams, methPrmTypes, method);
1761                 // Write the return value part
1762                 writeMethodHelperReturnJavaSkeleton(intDecl, methParams, methPrmTypes, method, isCallbackMethod, callbackType, true);
1763         }
1764
1765
1766         /**
1767          * HELPER: writeStdMethodHelperBodyJavaSkeleton() writes the standard method body helper in the skeleton class
1768          */
1769         private void writeStdMethodHelperBodyJavaSkeleton(InterfaceDecl intDecl, List<String> methParams,
1770                         List<String> methPrmTypes, String method, Set<String> callbackClasses) {
1771
1772                 // Generate array of parameter objects
1773                 boolean isCallbackMethod = false;
1774                 String callbackType = null;
1775                 print("Object[] paramObj = rmiObj.getMethodParams(new Class<?>[] { ");
1776                 for (int i = 0; i < methParams.size(); i++) {
1777
1778                         String paramType = returnGenericCallbackType(methPrmTypes.get(i));
1779                         if (callbackClasses.contains(paramType)) {
1780                                 isCallbackMethod = true;
1781                                 callbackType = paramType;
1782                                 print("int.class");
1783                         } else {        // Generate normal classes if it's not a callback object
1784                                 String prmType = checkAndGetArray(methPrmTypes.get(i), methParams.get(i));
1785                                 print(getSimpleType(getEnumType(prmType)) + ".class");
1786                         }
1787                         if (i != methParams.size() - 1)
1788                                 print(", ");
1789                 }
1790                 println(" }, ");
1791                 // Generate generic class if it's a generic type.. null otherwise
1792                 print("new Class<?>[] { ");
1793                 for (int i = 0; i < methParams.size(); i++) {
1794                         String prmType = methPrmTypes.get(i);
1795                         if ((getParamCategory(prmType) == ParamCategory.NONPRIMITIVES) &&
1796                                 !isEnumClass(getGenericType(prmType)) &&
1797                                 !callbackClasses.contains(getGenericType(prmType)))
1798                                         print(getGenericType(prmType) + ".class");
1799                         else
1800                                 print("null");
1801                         if (i != methParams.size() - 1)
1802                                 print(", ");
1803                 }
1804                 println(" });");
1805                 // Write the return value part
1806                 writeMethodHelperReturnJavaSkeleton(intDecl, methParams, methPrmTypes, method, isCallbackMethod, callbackType, false);
1807         }
1808
1809
1810         /**
1811          * HELPER: writeMethodHelperJavaSkeleton() writes the method helper of the skeleton class
1812          */
1813         private void writeMethodHelperJavaSkeleton(Collection<String> methods, InterfaceDecl intDecl, Set<String> callbackClasses) {
1814
1815                 // Use this set to handle two same methodIds
1816                 Set<String> uniqueMethodIds = new HashSet<String>();
1817                 for (String method : methods) {
1818
1819                         List<String> methParams = intDecl.getMethodParams(method);
1820                         List<String> methPrmTypes = intDecl.getMethodParamTypes(method);
1821                         if (isStructPresent(methParams, methPrmTypes)) {        // Treat struct differently
1822                                 String methodId = intDecl.getMethodId(method);
1823                                 print("public void ___");
1824                                 String helperMethod = methodId;
1825                                 if (uniqueMethodIds.contains(methodId))
1826                                         helperMethod = helperMethod + intDecl.getMethodNumId(method);
1827                                 else
1828                                         uniqueMethodIds.add(methodId);
1829                                 String retType = intDecl.getMethodType(method);
1830                                 print(helperMethod + "(");
1831                                 boolean begin = true;
1832                                 for (int i = 0; i < methParams.size(); i++) { // Print size variables
1833                                         String paramType = methPrmTypes.get(i);
1834                                         String param = methParams.get(i);
1835                                         String simpleType = getGenericType(paramType);
1836                                         if (isStructClass(simpleType)) {
1837                                                 if (!begin)     // Generate comma for not the beginning variable
1838                                                         print(", ");
1839                                                 else
1840                                                         begin = false;
1841                                                 int methodNumId = intDecl.getMethodNumId(method);
1842                                                 print("int struct" + methodNumId + "Size" + i);
1843                                         }
1844                                 }
1845                                 // Check if this is "void"
1846                                 if (retType.equals("void"))
1847                                         println(") {");
1848                                 else
1849                                         println(") throws IOException {");
1850                                 writeMethodHelperStructJavaSkeleton(intDecl, methParams, methPrmTypes, method, callbackClasses);
1851                                 println("}\n");
1852                         } else {
1853                                 String methodId = intDecl.getMethodId(method);
1854                                 print("public void ___");
1855                                 String helperMethod = methodId;
1856                                 if (uniqueMethodIds.contains(methodId))
1857                                         helperMethod = helperMethod + intDecl.getMethodNumId(method);
1858                                 else
1859                                         uniqueMethodIds.add(methodId);
1860                                 // Check if this is "void"
1861                                 String retType = intDecl.getMethodType(method);
1862                                 if (retType.equals("void"))
1863                                         println(helperMethod + "() {");
1864                                 else
1865                                         println(helperMethod + "() throws IOException {");
1866                                 // Now, write the helper body of skeleton!
1867                                 writeStdMethodHelperBodyJavaSkeleton(intDecl, methParams, methPrmTypes, method, callbackClasses);
1868                                 println("}\n");
1869                         }
1870                 }
1871                 // Write method helper for structs
1872                 writeMethodHelperStructSetupJavaSkeleton(methods, intDecl);
1873         }
1874
1875
1876         /**
1877          * HELPER: writeMethodHelperStructSetupJavaSkeleton() writes the method helper of struct setup in skeleton class
1878          */
1879         private void writeMethodHelperStructSetupJavaSkeleton(Collection<String> methods,
1880                         InterfaceDecl intDecl) {
1881
1882                 // Use this set to handle two same methodIds
1883                 for (String method : methods) {
1884
1885                         List<String> methParams = intDecl.getMethodParams(method);
1886                         List<String> methPrmTypes = intDecl.getMethodParamTypes(method);
1887                         // Check for params with structs
1888                         for (int i = 0; i < methParams.size(); i++) {
1889                                 String paramType = methPrmTypes.get(i);
1890                                 String param = methParams.get(i);
1891                                 String simpleType = getGenericType(paramType);
1892                                 if (isStructClass(simpleType)) {
1893                                         int methodNumId = intDecl.getMethodNumId(method);
1894                                         print("public int ___");
1895                                         String helperMethod = methodNumId + "struct" + i;
1896                                         println(helperMethod + "() {");
1897                                         // Now, write the helper body of skeleton!
1898                                         println("Object[] paramObj = rmiObj.getMethodParams(new Class<?>[] { int.class }, new Class<?>[] { null });");
1899                                         println("return (int) paramObj[0];");
1900                                         println("}\n");
1901                                 }
1902                         }
1903                 }
1904         }
1905
1906
1907         /**
1908          * HELPER: writeMethodHelperStructSetupJavaCallbackSkeleton() writes the method helper of struct setup in callback skeleton class
1909          */
1910         private void writeMethodHelperStructSetupJavaCallbackSkeleton(Collection<String> methods,
1911                         InterfaceDecl intDecl) {
1912
1913                 // Use this set to handle two same methodIds
1914                 for (String method : methods) {
1915
1916                         List<String> methParams = intDecl.getMethodParams(method);
1917                         List<String> methPrmTypes = intDecl.getMethodParamTypes(method);
1918                         // Check for params with structs
1919                         for (int i = 0; i < methParams.size(); i++) {
1920                                 String paramType = methPrmTypes.get(i);
1921                                 String param = methParams.get(i);
1922                                 String simpleType = getGenericType(paramType);
1923                                 if (isStructClass(simpleType)) {
1924                                         int methodNumId = intDecl.getMethodNumId(method);
1925                                         print("public int ___");
1926                                         String helperMethod = methodNumId + "struct" + i;
1927                                         println(helperMethod + "(IoTRMIObject rmiObj) {");
1928                                         // Now, write the helper body of skeleton!
1929                                         println("Object[] paramObj = rmiObj.getMethodParams(new Class<?>[] { int.class }, new Class<?>[] { null });");
1930                                         println("return (int) paramObj[0];");
1931                                         println("}\n");
1932                                 }
1933                         }
1934                 }
1935         }
1936
1937
1938         /**
1939          * HELPER: writeCountVarStructSkeleton() writes counter variable of struct for skeleton
1940          */
1941         private void writeCountVarStructSkeleton(Collection<String> methods, InterfaceDecl intDecl) {
1942
1943                 // Use this set to handle two same methodIds
1944                 for (String method : methods) {
1945
1946                         List<String> methParams = intDecl.getMethodParams(method);
1947                         List<String> methPrmTypes = intDecl.getMethodParamTypes(method);
1948                         // Check for params with structs
1949                         for (int i = 0; i < methParams.size(); i++) {
1950                                 String paramType = methPrmTypes.get(i);
1951                                 String param = methParams.get(i);
1952                                 String simpleType = getGenericType(paramType);
1953                                 if (isStructClass(simpleType)) {
1954                                         int methodNumId = intDecl.getMethodNumId(method);
1955                                         println("int struct" + methodNumId + "Size" + i + " = 0;");
1956                                 }
1957                         }
1958                 }
1959         }
1960
1961
1962         /**
1963          * HELPER: writeInputCountVarStructSkeleton() writes input counter variable of struct for skeleton
1964          */
1965         private boolean writeInputCountVarStructSkeleton(String method, InterfaceDecl intDecl) {
1966
1967                 List<String> methParams = intDecl.getMethodParams(method);
1968                 List<String> methPrmTypes = intDecl.getMethodParamTypes(method);
1969                 boolean structExist = false;
1970                 boolean begin = true;
1971                 // Check for params with structs
1972                 for (int i = 0; i < methParams.size(); i++) {
1973                         String paramType = methPrmTypes.get(i);
1974                         String param = methParams.get(i);
1975                         String simpleType = getGenericType(paramType);
1976                         if (isStructClass(simpleType)) {
1977                                 structExist = true;
1978                                 if (!begin)
1979                                         print(", ");
1980                                 else
1981                                         begin = false;
1982                                 int methodNumId = intDecl.getMethodNumId(method);
1983                                 print("struct" + methodNumId + "Size" + i);
1984                         }
1985                 }
1986                 return structExist;
1987         }
1988
1989
1990         /**
1991          * HELPER: writeMethodCallStructSkeleton() writes method call for wait invoke in skeleton
1992          */
1993         private void writeMethodCallStructSkeleton(Collection<String> methods, InterfaceDecl intDecl) {
1994
1995                 // Use this set to handle two same methodIds
1996                 for (String method : methods) {
1997
1998                         List<String> methParams = intDecl.getMethodParams(method);
1999                         List<String> methPrmTypes = intDecl.getMethodParamTypes(method);
2000                         // Check for params with structs
2001                         for (int i = 0; i < methParams.size(); i++) {
2002                                 String paramType = methPrmTypes.get(i);
2003                                 String param = methParams.get(i);
2004                                 String simpleType = getGenericType(paramType);
2005                                 if (isStructClass(simpleType)) {
2006                                         int methodNumId = intDecl.getMethodNumId(method);
2007                                         print("case ");
2008                                         String helperMethod = methodNumId + "struct" + i;
2009                                         String tempVar = "struct" + methodNumId + "Size" + i;
2010                                         print(intDecl.getHelperMethodNumId(helperMethod) + ": ");
2011                                         print(tempVar + " = ___");
2012                                         println(helperMethod + "(); break;");
2013                                 }
2014                         }
2015                 }
2016         }
2017
2018
2019         /**
2020          * HELPER: writeMethodCallStructCallbackSkeleton() writes method call for wait invoke in skeleton
2021          */
2022         private void writeMethodCallStructCallbackSkeleton(Collection<String> methods, InterfaceDecl intDecl) {
2023
2024                 // Use this set to handle two same methodIds
2025                 for (String method : methods) {
2026
2027                         List<String> methParams = intDecl.getMethodParams(method);
2028                         List<String> methPrmTypes = intDecl.getMethodParamTypes(method);
2029                         // Check for params with structs
2030                         for (int i = 0; i < methParams.size(); i++) {
2031                                 String paramType = methPrmTypes.get(i);
2032                                 String param = methParams.get(i);
2033                                 String simpleType = getGenericType(paramType);
2034                                 if (isStructClass(simpleType)) {
2035                                         int methodNumId = intDecl.getMethodNumId(method);
2036                                         print("case ");
2037                                         String helperMethod = methodNumId + "struct" + i;
2038                                         String tempVar = "struct" + methodNumId + "Size" + i;
2039                                         print(intDecl.getHelperMethodNumId(helperMethod) + ": ");
2040                                         print(tempVar + " = ___");
2041                                         println(helperMethod + "(rmiObj); break;");
2042                                 }
2043                         }
2044                 }
2045         }
2046
2047
2048         /**
2049          * HELPER: writeJavaMethodPermission() writes permission checks in skeleton
2050          */
2051         private void writeJavaMethodPermission(String intface) {
2052
2053                 // Get all the different stubs
2054                 Map<String,Set<String>> mapNewIntMethods = mapInt2NewInts.get(intface);
2055                 for (Map.Entry<String,Set<String>> intMeth : mapNewIntMethods.entrySet()) {
2056                         String newIntface = intMeth.getKey();
2057                         int newObjectId = getNewIntfaceObjectId(newIntface);
2058                         println("if (_objectId == object" + newObjectId + "Id) {");
2059                         println("if (!set" + newObjectId + "Allowed.contains(methodId)) {");
2060                         println("throw new Error(\"Object with object Id: \" + _objectId + \"  is not allowed to access method: \" + methodId);");
2061                         println("}");
2062                         println("}");
2063                         println("else {");
2064                         println("throw new Error(\"Object Id: \" + _objectId + \" not recognized!\");");
2065                         println("}");
2066                 }
2067         }
2068
2069
2070         /**
2071          * HELPER: writeJavaWaitRequestInvokeMethod() writes the main loop of the skeleton class
2072          */
2073         private void writeJavaWaitRequestInvokeMethod(Collection<String> methods, InterfaceDecl intDecl, boolean callbackExist, String intface) {
2074
2075                 // Use this set to handle two same methodIds
2076                 Set<String> uniqueMethodIds = new HashSet<String>();
2077                 println("private void ___waitRequestInvokeMethod() throws IOException {");
2078                 // Write variables here if we have callbacks or enums or structs
2079                 writeCountVarStructSkeleton(methods, intDecl);
2080                 println("while (true) {");
2081                 println("rmiObj.getMethodBytes();");
2082                 println("int _objectId = rmiObj.getObjectId();");
2083                 println("int methodId = rmiObj.getMethodId();");
2084                 // Generate permission check
2085                 writeJavaMethodPermission(intface);
2086                 println("switch (methodId) {");
2087                 // Print methods and method Ids
2088                 for (String method : methods) {
2089                         String methodId = intDecl.getMethodId(method);
2090                         int methodNumId = intDecl.getMethodNumId(method);
2091                         print("case " + methodNumId + ": ___");
2092                         String helperMethod = methodId;
2093                         if (uniqueMethodIds.contains(methodId))
2094                                 helperMethod = helperMethod + methodNumId;
2095                         else
2096                                 uniqueMethodIds.add(methodId);
2097                         print(helperMethod + "(");
2098                         writeInputCountVarStructSkeleton(method, intDecl);
2099                         println("); break;");
2100                 }
2101                 String method = "___initCallBack()";
2102                 // Print case -9999 (callback handler) if callback exists
2103                 if (callbackExist) {
2104                         int methodId = intDecl.getHelperMethodNumId(method);
2105                         println("case " + methodId + ": ___regCB(); break;");
2106                 }
2107                 writeMethodCallStructSkeleton(methods, intDecl);
2108                 println("default: ");
2109                 println("throw new Error(\"Method Id \" + methodId + \" not recognized!\");");
2110                 println("}");
2111                 println("}");
2112                 println("}\n");
2113         }
2114
2115
2116         /**
2117          * generateJavaSkeletonClass() generate skeletons based on the methods list in Java
2118          */
2119         public void generateJavaSkeletonClass() throws IOException {
2120
2121                 // Create a new directory
2122                 String path = createDirectories(dir, subdir);
2123                 for (String intface : mapIntfacePTH.keySet()) {
2124                         // Open a new file to write into
2125                         String newSkelClass = intface + "_Skeleton";
2126                         FileWriter fw = new FileWriter(path + "/" + newSkelClass + ".java");
2127                         pw = new PrintWriter(new BufferedWriter(fw));
2128                         // Pass in set of methods and get import classes
2129                         DeclarationHandler decHandler = mapIntDeclHand.get(intface);
2130                         InterfaceDecl intDecl = (InterfaceDecl) decHandler.getInterfaceDecl(intface);
2131                         List<String> methods = intDecl.getMethods();
2132                         Set<String> importClasses = getImportClasses(methods, intDecl);
2133                         List<String> stdImportClasses = getStandardJavaImportClasses();
2134                         List<String> allImportClasses = getAllLibClasses(stdImportClasses, importClasses);
2135                         printImportStatements(allImportClasses);
2136                         // Find out if there are callback objects
2137                         Set<String> callbackClasses = getCallbackClasses(methods, intDecl);
2138                         boolean callbackExist = !callbackClasses.isEmpty();
2139                         // Write class header
2140                         println("");
2141                         println("public class " + newSkelClass  + " implements " + intface + " {\n");
2142                         // Write properties
2143                         writePropertiesJavaSkeleton(intface, callbackExist, intDecl);
2144                         // Write constructor
2145                         writeConstructorJavaSkeleton(newSkelClass, intface, intDecl, methods, callbackExist);
2146                         // Write methods
2147                         writeMethodJavaSkeleton(methods, intDecl, callbackClasses, false);
2148                         // Write method helper
2149                         writeMethodHelperJavaSkeleton(methods, intDecl, callbackClasses);
2150                         // Write waitRequestInvokeMethod() - main loop
2151                         writeJavaWaitRequestInvokeMethod(methods, intDecl, callbackExist, intface);
2152                         println("}");
2153                         pw.close();
2154                         System.out.println("IoTCompiler: Generated skeleton class " + newSkelClass + ".java...");
2155                 }
2156         }
2157
2158
2159         /**
2160          * HELPER: writePropertiesJavaCallbackSkeleton() writes the properties of the callback skeleton class
2161          */
2162         private void writePropertiesJavaCallbackSkeleton(String intface, boolean callbackExist) {
2163
2164                 println("private " + intface + " mainObj;");
2165                 // For callback skeletons, this is its own object Id
2166                 println("private int objectId = 0;");
2167                 // Callback
2168                 if (callbackExist) {
2169                         println("private static int objIdCnt = 0;");
2170                         println("private IoTRMICall rmiCall;");
2171                 }
2172                 println("\n");
2173         }
2174
2175
2176         /**
2177          * HELPER: writeConstructorJavaCallbackSkeleton() writes the constructor of the skeleton class
2178          */
2179         private void writeConstructorJavaCallbackSkeleton(String newSkelClass, String intface, InterfaceDecl intDecl, Collection<String> methods) {
2180
2181                 println("public " + newSkelClass + "(" + intface + " _mainObj, int _objectId) throws Exception {");
2182                 println("mainObj = _mainObj;");
2183                 println("objectId = _objectId;");
2184                 println("}\n");
2185         }
2186
2187
2188         /**
2189          * HELPER: writeMethodHelperJavaCallbackSkeleton() writes the method helper of the callback skeleton class
2190          */
2191         private void writeMethodHelperJavaCallbackSkeleton(Collection<String> methods, InterfaceDecl intDecl, Set<String> callbackClasses) {
2192
2193                 // Use this set to handle two same methodIds
2194                 Set<String> uniqueMethodIds = new HashSet<String>();
2195                 for (String method : methods) {
2196
2197                         List<String> methParams = intDecl.getMethodParams(method);
2198                         List<String> methPrmTypes = intDecl.getMethodParamTypes(method);
2199                         if (isStructPresent(methParams, methPrmTypes)) {        // Treat struct differently
2200                                 String methodId = intDecl.getMethodId(method);
2201                                 print("public void ___");
2202                                 String helperMethod = methodId;
2203                                 if (uniqueMethodIds.contains(methodId))
2204                                         helperMethod = helperMethod + intDecl.getMethodNumId(method);
2205                                 else
2206                                         uniqueMethodIds.add(methodId);
2207                                 String retType = intDecl.getMethodType(method);
2208                                 print(helperMethod + "(");
2209                                 boolean begin = true;
2210                                 for (int i = 0; i < methParams.size(); i++) { // Print size variables
2211                                         String paramType = methPrmTypes.get(i);
2212                                         String param = methParams.get(i);
2213                                         String simpleType = getGenericType(paramType);
2214                                         if (isStructClass(simpleType)) {
2215                                                 if (!begin)     // Generate comma for not the beginning variable
2216                                                         print(", ");
2217                                                 else
2218                                                         begin = false;
2219                                                 int methodNumId = intDecl.getMethodNumId(method);
2220                                                 print("int struct" + methodNumId + "Size" + i);
2221                                         }
2222                                 }
2223                                 // Check if this is "void"
2224                                 if (retType.equals("void"))
2225                                         println(", IoTRMIObject rmiObj) {");
2226                                 else
2227                                         println(", IoTRMIObject rmiObj) throws IOException {");
2228                                 writeMethodHelperStructJavaSkeleton(intDecl, methParams, methPrmTypes, method, callbackClasses);
2229                                 println("}\n");
2230                         } else {
2231                                 String methodId = intDecl.getMethodId(method);
2232                                 print("public void ___");
2233                                 String helperMethod = methodId;
2234                                 if (uniqueMethodIds.contains(methodId))
2235                                         helperMethod = helperMethod + intDecl.getMethodNumId(method);
2236                                 else
2237                                         uniqueMethodIds.add(methodId);
2238                                 // Check if this is "void"
2239                                 String retType = intDecl.getMethodType(method);
2240                                 if (retType.equals("void"))
2241                                         println(helperMethod + "(IoTRMIObject rmiObj) {");
2242                                 else
2243                                         println(helperMethod + "(IoTRMIObject rmiObj) throws IOException {");
2244                                 // Now, write the helper body of skeleton!
2245                                 writeStdMethodHelperBodyJavaSkeleton(intDecl, methParams, methPrmTypes, method, callbackClasses);
2246                                 println("}\n");
2247                         }
2248                 }
2249                 // Write method helper for structs
2250                 writeMethodHelperStructSetupJavaCallbackSkeleton(methods, intDecl);
2251         }
2252
2253
2254         /**
2255          * HELPER: writeJavaCallbackWaitRequestInvokeMethod() writes the request invoke method of the callback skeleton class
2256          */
2257         private void writeJavaCallbackWaitRequestInvokeMethod(Collection<String> methods, InterfaceDecl intDecl, boolean callbackExist) {
2258
2259                 // Use this set to handle two same methodIds
2260                 Set<String> uniqueMethodIds = new HashSet<String>();
2261                 println("public void invokeMethod(IoTRMIObject rmiObj) throws IOException {");
2262                 // Write variables here if we have callbacks or enums or structs
2263                 writeCountVarStructSkeleton(methods, intDecl);
2264                 // Write variables here if we have callbacks or enums or structs
2265                 println("int methodId = rmiObj.getMethodId();");
2266                 // TODO: code the permission check here!
2267                 println("switch (methodId) {");
2268                 // Print methods and method Ids
2269                 for (String method : methods) {
2270                         String methodId = intDecl.getMethodId(method);
2271                         int methodNumId = intDecl.getMethodNumId(method);
2272                         print("case " + methodNumId + ": ___");
2273                         String helperMethod = methodId;
2274                         if (uniqueMethodIds.contains(methodId))
2275                                 helperMethod = helperMethod + methodNumId;
2276                         else
2277                                 uniqueMethodIds.add(methodId);
2278                         print(helperMethod + "(");
2279                         if (writeInputCountVarStructSkeleton(method, intDecl))
2280                                 println(", rmiObj); break;");
2281                         else
2282                                 println("rmiObj); break;");
2283                 }
2284                 String method = "___initCallBack()";
2285                 // Print case -9999 (callback handler) if callback exists
2286                 if (callbackExist) {
2287                         int methodId = intDecl.getHelperMethodNumId(method);
2288                         println("case " + methodId + ": ___regCB(rmiObj); break;");
2289                 }
2290                 writeMethodCallStructCallbackSkeleton(methods, intDecl);
2291                 println("default: ");
2292                 println("throw new Error(\"Method Id \" + methodId + \" not recognized!\");");
2293                 println("}");
2294                 println("}\n");
2295         }
2296
2297
2298         /**
2299          * generateJavaCallbackSkeletonClass() generate callback skeletons based on the methods list in Java
2300          */
2301         public void generateJavaCallbackSkeletonClass() throws IOException {
2302
2303                 // Create a new directory
2304                 String path = createDirectories(dir, subdir);
2305                 for (String intface : mapIntfacePTH.keySet()) {
2306                         // Open a new file to write into
2307                         String newSkelClass = intface + "_CallbackSkeleton";
2308                         FileWriter fw = new FileWriter(path + "/" + newSkelClass + ".java");
2309                         pw = new PrintWriter(new BufferedWriter(fw));
2310                         // Pass in set of methods and get import classes
2311                         DeclarationHandler decHandler = mapIntDeclHand.get(intface);
2312                         InterfaceDecl intDecl = (InterfaceDecl) decHandler.getInterfaceDecl(intface);
2313                         List<String> methods = intDecl.getMethods();
2314                         Set<String> importClasses = getImportClasses(methods, intDecl);
2315                         List<String> stdImportClasses = getStandardJavaImportClasses();
2316                         List<String> allImportClasses = getAllLibClasses(stdImportClasses, importClasses);
2317                         printImportStatements(allImportClasses);
2318                         // Find out if there are callback objects
2319                         Set<String> callbackClasses = getCallbackClasses(methods, intDecl);
2320                         boolean callbackExist = !callbackClasses.isEmpty();
2321                         // Write class header
2322                         println("");
2323                         println("public class " + newSkelClass  + " implements " + intface + " {\n");
2324                         // Write properties
2325                         writePropertiesJavaCallbackSkeleton(intface, callbackExist);
2326                         // Write constructor
2327                         writeConstructorJavaCallbackSkeleton(newSkelClass, intface, intDecl, methods);
2328                         // Write methods
2329                         writeMethodJavaSkeleton(methods, intDecl, callbackClasses, true);
2330                         // Write method helper
2331                         writeMethodHelperJavaCallbackSkeleton(methods, intDecl, callbackClasses);
2332                         // Write waitRequestInvokeMethod() - main loop
2333                         writeJavaCallbackWaitRequestInvokeMethod(methods, intDecl, callbackExist);
2334                         println("}");
2335                         pw.close();
2336                         System.out.println("IoTCompiler: Generated callback skeleton class " + newSkelClass + ".java...");
2337                 }
2338         }
2339
2340
2341         /**
2342          * HELPER: writeMethodCplusLocalInterface() writes the method of the local interface
2343          */
2344         private void writeMethodCplusLocalInterface(Collection<String> methods, InterfaceDecl intDecl) {
2345
2346                 for (String method : methods) {
2347
2348                         List<String> methParams = intDecl.getMethodParams(method);
2349                         List<String> methPrmTypes = intDecl.getMethodParamTypes(method);
2350                         print("virtual " + checkAndGetCplusType(intDecl.getMethodType(method)) + " " +
2351                                 intDecl.getMethodId(method) + "(");
2352                         for (int i = 0; i < methParams.size(); i++) {
2353                                 // Check for params with driver class types and exchange it
2354                                 //              with its remote interface
2355                                 String paramType = checkAndGetParamClass(methPrmTypes.get(i));
2356                                 paramType = checkAndGetCplusType(paramType);
2357                                 // Check for arrays - translate into vector in C++
2358                                 String paramComplete = checkAndGetCplusArray(paramType, methParams.get(i));
2359                                 print(paramComplete);
2360                                 // Check if this is the last element (don't print a comma)
2361                                 if (i != methParams.size() - 1) {
2362                                         print(", ");
2363                                 }
2364                         }
2365                         println(") = 0;");
2366                 }
2367         }
2368
2369
2370         /**
2371          * HELPER: writeMethodCplusInterface() writes the method of the interface
2372          */
2373         private void writeMethodCplusInterface(Collection<String> methods, InterfaceDecl intDecl) {
2374
2375                 for (String method : methods) {
2376
2377                         List<String> methParams = intDecl.getMethodParams(method);
2378                         List<String> methPrmTypes = intDecl.getMethodParamTypes(method);
2379                         print("virtual " + checkAndGetCplusType(intDecl.getMethodType(method)) + " " +
2380                                 intDecl.getMethodId(method) + "(");
2381                         for (int i = 0; i < methParams.size(); i++) {
2382                                 // Check for params with driver class types and exchange it
2383                                 //              with its remote interface
2384                                 String paramType = methPrmTypes.get(i);
2385                                 paramType = checkAndGetCplusType(paramType);
2386                                 // Check for arrays - translate into vector in C++
2387                                 String paramComplete = checkAndGetCplusArray(paramType, methParams.get(i));
2388                                 print(paramComplete);
2389                                 // Check if this is the last element (don't print a comma)
2390                                 if (i != methParams.size() - 1) {
2391                                         print(", ");
2392                                 }
2393                         }
2394                         println(") = 0;");
2395                 }
2396         }
2397
2398
2399         /**
2400          * HELPER: generateEnumCplus() writes the enumeration declaration
2401          */
2402         public void generateEnumCplus() throws IOException {
2403
2404                 // Create a new directory
2405                 createDirectory(dir);
2406                 for (String intface : mapIntfacePTH.keySet()) {
2407                         // Get the right StructDecl
2408                         DeclarationHandler decHandler = mapIntDeclHand.get(intface);
2409                         EnumDecl enumDecl = (EnumDecl) decHandler.getEnumDecl(intface);
2410                         Set<String> enumTypes = enumDecl.getEnumDeclarations();
2411                         // Iterate over enum declarations
2412                         for (String enType : enumTypes) {
2413                                 // Open a new file to write into
2414                                 FileWriter fw = new FileWriter(dir + "/" + enType + ".hpp");
2415                                 pw = new PrintWriter(new BufferedWriter(fw));
2416                                 // Write file headers
2417                                 println("#ifndef _" + enType.toUpperCase() + "_HPP__");
2418                                 println("#define _" + enType.toUpperCase() + "_HPP__");
2419                                 println("enum " + enType + " {");
2420                                 List<String> enumMembers = enumDecl.getMembers(enType);
2421                                 for (int i = 0; i < enumMembers.size(); i++) {
2422
2423                                         String member = enumMembers.get(i);
2424                                         print(member);
2425                                         // Check if this is the last element (don't print a comma)
2426                                         if (i != enumMembers.size() - 1)
2427                                                 println(",");
2428                                         else
2429                                                 println("");
2430                                 }
2431                                 println("};\n");
2432                                 println("#endif");
2433                                 pw.close();
2434                                 System.out.println("IoTCompiler: Generated enum " + enType + ".hpp...");
2435                         }
2436                 }
2437         }
2438
2439
2440         /**
2441          * HELPER: generateStructCplus() writes the struct declaration
2442          */
2443         public void generateStructCplus() throws IOException {
2444
2445                 // Create a new directory
2446                 createDirectory(dir);
2447                 for (String intface : mapIntfacePTH.keySet()) {
2448                         // Get the right StructDecl
2449                         DeclarationHandler decHandler = mapIntDeclHand.get(intface);
2450                         StructDecl structDecl = (StructDecl) decHandler.getStructDecl(intface);
2451                         List<String> structTypes = structDecl.getStructTypes();
2452                         // Iterate over enum declarations
2453                         for (String stType : structTypes) {
2454                                 // Open a new file to write into
2455                                 FileWriter fw = new FileWriter(dir + "/" + stType + ".hpp");
2456                                 pw = new PrintWriter(new BufferedWriter(fw));
2457                                 // Write file headers
2458                                 println("#ifndef _" + stType.toUpperCase() + "_HPP__");
2459                                 println("#define _" + stType.toUpperCase() + "_HPP__");
2460                                 println("using namespace std;");
2461                                 println("struct " + stType + " {");
2462                                 List<String> structMemberTypes = structDecl.getMemberTypes(stType);
2463                                 List<String> structMembers = structDecl.getMembers(stType);
2464                                 for (int i = 0; i < structMembers.size(); i++) {
2465
2466                                         String memberType = structMemberTypes.get(i);
2467                                         String member = structMembers.get(i);
2468                                         String structTypeC = checkAndGetCplusType(memberType);
2469                                         String structComplete = checkAndGetCplusArray(structTypeC, member);
2470                                         println(structComplete + ";");
2471                                 }
2472                                 println("};\n");
2473                                 println("#endif");
2474                                 pw.close();
2475                                 System.out.println("IoTCompiler: Generated struct " + stType + ".hpp...");
2476                         }
2477                 }
2478         }
2479
2480
2481         /**
2482          * generateCplusLocalInterfaces() writes the local interfaces and provides type-checking.
2483          * <p>
2484          * It needs to rewrite and exchange USERDEFINED types in input parameters of stub
2485          * and original interfaces, e.g. exchange Camera and CameraWithVideoAndRecording.
2486          * The local interface has to be the input parameter for the stub and the stub
2487          * interface has to be the input parameter for the local class.
2488          */
2489         public void generateCplusLocalInterfaces() throws IOException {
2490
2491                 // Create a new directory
2492                 createDirectory(dir);
2493                 for (String intface : mapIntfacePTH.keySet()) {
2494                         // Open a new file to write into
2495                         FileWriter fw = new FileWriter(dir + "/" + intface + ".hpp");
2496                         pw = new PrintWriter(new BufferedWriter(fw));
2497                         // Write file headers
2498                         println("#ifndef _" + intface.toUpperCase() + "_HPP__");
2499                         println("#define _" + intface.toUpperCase() + "_HPP__");
2500                         println("#include <iostream>");
2501                         // Pass in set of methods and get include classes
2502                         DeclarationHandler decHandler = mapIntDeclHand.get(intface);
2503                         InterfaceDecl intDecl = (InterfaceDecl) decHandler.getInterfaceDecl(intface);
2504                         List<String> methods = intDecl.getMethods();
2505                         Set<String> includeClasses = getIncludeClasses(methods, intDecl, intface, true);
2506                         printIncludeStatements(includeClasses); println("");
2507                         println("using namespace std;\n");
2508                         //writeStructCplus(structDecl);
2509                         println("class " + intface); println("{");
2510                         println("public:");
2511                         // Write methods
2512                         writeMethodCplusLocalInterface(methods, intDecl);
2513                         println("};");
2514                         println("#endif");
2515                         pw.close();
2516                         System.out.println("IoTCompiler: Generated local interface " + intface + ".hpp...");
2517                 }
2518         }
2519
2520
2521         /**
2522          * generateCPlusInterfaces() generate stub interfaces based on the methods list in C++
2523          * <p>
2524          * For C++ we use virtual classe as interface
2525          */
2526         public void generateCPlusInterfaces() throws IOException {
2527
2528                 // Create a new directory
2529                 String path = createDirectories(dir, subdir);
2530                 for (String intface : mapIntfacePTH.keySet()) {
2531
2532                         Map<String,Set<String>> mapNewIntMethods = mapInt2NewInts.get(intface);
2533                         for (Map.Entry<String,Set<String>> intMeth : mapNewIntMethods.entrySet()) {
2534
2535                                 // Open a new file to write into
2536                                 String newIntface = intMeth.getKey();
2537                                 FileWriter fw = new FileWriter(path + "/" + newIntface + ".hpp");
2538                                 pw = new PrintWriter(new BufferedWriter(fw));
2539                                 DeclarationHandler decHandler = mapIntDeclHand.get(intface);
2540                                 InterfaceDecl intDecl = (InterfaceDecl) decHandler.getInterfaceDecl(intface);
2541                                 // Write file headers
2542                                 println("#ifndef _" + newIntface.toUpperCase() + "_HPP__");
2543                                 println("#define _" + newIntface.toUpperCase() + "_HPP__");
2544                                 println("#include <iostream>");
2545                                 // Pass in set of methods and get import classes
2546                                 Set<String> includeClasses = getIncludeClasses(intMeth.getValue(), intDecl, intface, false);
2547                                 List<String> stdIncludeClasses = getStandardCplusIncludeClasses();
2548                                 List<String> allIncludeClasses = getAllLibClasses(stdIncludeClasses, includeClasses);
2549                                 printIncludeStatements(allIncludeClasses); println("");
2550                                 println("using namespace std;\n");
2551                                 println("class " + newIntface);
2552                                 println("{");
2553                                 println("public:");
2554                                 // Write methods
2555                                 writeMethodCplusInterface(intMeth.getValue(), intDecl);
2556                                 println("};");
2557                                 println("#endif");
2558                                 pw.close();
2559                                 System.out.println("IoTCompiler: Generated interface " + newIntface + ".hpp...");
2560                         }
2561                 }
2562         }
2563
2564
2565         /**
2566          * HELPER: writeMethodCplusStub() writes the methods of the stub
2567          */
2568         private void writeMethodCplusStub(Collection<String> methods, InterfaceDecl intDecl, Set<String> callbackClasses) {
2569
2570                 boolean isDefined = false;
2571                 for (String method : methods) {
2572
2573                         List<String> methParams = intDecl.getMethodParams(method);
2574                         List<String> methPrmTypes = intDecl.getMethodParamTypes(method);
2575                         print(checkAndGetCplusType(intDecl.getMethodType(method)) + " " +
2576                                 intDecl.getMethodId(method) + "(");
2577                         boolean isCallbackMethod = false;
2578                         String callbackType = null;
2579                         for (int i = 0; i < methParams.size(); i++) {
2580
2581                                 String paramType = returnGenericCallbackType(methPrmTypes.get(i));
2582                                 // Check if this has callback object
2583                                 if (callbackClasses.contains(paramType)) {
2584                                         isCallbackMethod = true;
2585                                         callbackType = paramType;
2586                                         // Even if there're 2 callback arguments, we expect them to be of the same interface
2587                                 }
2588                                 String methPrmType = checkAndGetCplusType(methPrmTypes.get(i));
2589                                 String methParamComplete = checkAndGetCplusArray(methPrmType, methParams.get(i));
2590                                 print(methParamComplete);
2591                                 // Check if this is the last element (don't print a comma)
2592                                 if (i != methParams.size() - 1) {
2593                                         print(", ");
2594                                 }
2595                         }
2596                         println(") { ");
2597                         if (isCallbackMethod)
2598                                 writeCallbackMethodBodyCplusStub(intDecl, methParams, methPrmTypes, method, callbackType);
2599                         writeStdMethodBodyCplusStub(intDecl, methParams, methPrmTypes, method, callbackType, isCallbackMethod);
2600                         println("}\n");
2601                         // Write the init callback helper method
2602                         if (isCallbackMethod && !isDefined) {
2603                                 writeInitCallbackCplusStub(callbackType, intDecl);
2604                                 writeInitCallbackSendInfoCplusStub(intDecl);
2605                                 isDefined = true;
2606                         }
2607                 }
2608         }
2609
2610
2611         /**
2612          * HELPER: writeCallbackMethodBodyCplusStub() writes the callback method of the stub class
2613          */
2614         private void writeCallbackMethodBodyCplusStub(InterfaceDecl intDecl, List<String> methParams,
2615                         List<String> methPrmTypes, String method, String callbackType) {
2616
2617                 // Check if this is single object, array, or list of objects
2618                 boolean isArrayOrList = false;
2619                 String callbackParam = null;
2620                 for (int i = 0; i < methParams.size(); i++) {
2621
2622                         String paramType = methPrmTypes.get(i);
2623                         if (checkCallbackType(paramType, callbackType)) { // Check if this has callback object
2624                                 String param = methParams.get(i);
2625                                 if (isArrayOrList(paramType, param)) {  // Generate loop
2626                                         println("for (" + getGenericType(paramType) + "* cb : " + getSimpleIdentifier(param) + ") {");
2627                                         println(callbackType + "_CallbackSkeleton* skel" + i + " = new " + callbackType + "_CallbackSkeleton(cb, objIdCnt++);");
2628                                         isArrayOrList = true;
2629                                         callbackParam = getSimpleIdentifier(param);
2630                                 } else
2631                                         println(callbackType + "_CallbackSkeleton* skel" + i + " = new " + callbackType + "_CallbackSkeleton(" +
2632                                                 getSimpleIdentifier(param) + ", objIdCnt++);");
2633                                 println("vecCallbackObj.push_back(skel" + i + ");");
2634                                 if (isArrayOrList)
2635                                         println("}");
2636                                 print("int ___paramCB" + i + " = ");
2637                                 if (isArrayOrList)
2638                                         println(callbackParam + ".size();");
2639                                 else
2640                                         println("1;");
2641                         }
2642                 }
2643         }
2644
2645
2646         /**
2647          * HELPER: checkAndWriteEnumTypeCplusStub() writes the enum type (convert from enum to int)
2648          */
2649         private void checkAndWriteEnumTypeCplusStub(List<String> methParams, List<String> methPrmTypes) {
2650
2651                 // Iterate and find enum declarations
2652                 for (int i = 0; i < methParams.size(); i++) {
2653                         String paramType = methPrmTypes.get(i);
2654                         String param = methParams.get(i);
2655                         if (isEnumClass(getGenericType(paramType))) {
2656                         // Check if this is enum type
2657                                 if (isArrayOrList(paramType, param)) {  // An array or vector
2658                                         println("int len" + i + " = " + getSimpleIdentifier(param) + ".size();");
2659                                         println("vector<int> paramEnum" + i + "(len" + i + ");");
2660                                         println("for (int i = 0; i < len" + i + "; i++) {");
2661                                         println("paramEnum" + i + "[i] = (int) " + getSimpleIdentifier(param) + "[i];");
2662                                         println("}");
2663                                 } else {        // Just one element
2664                                         println("vector<int> paramEnum" + i + "(1);");
2665                                         println("paramEnum" + i + "[0] = (int) " + param + ";");
2666                                 }
2667                         }
2668                 }
2669         }
2670
2671
2672         /**
2673          * HELPER: checkAndWriteEnumRetTypeCplusStub() writes the enum return type (convert from enum to int)
2674          */
2675         private void checkAndWriteEnumRetTypeCplusStub(String retType) {
2676
2677                 // Strips off array "[]" for return type
2678                 String pureType = getSimpleArrayType(getGenericType(retType));
2679                 // Take the inner type of generic
2680                 if (getParamCategory(retType) == ParamCategory.NONPRIMITIVES)
2681                         pureType = getGenericType(retType);
2682                 if (isEnumClass(pureType)) {
2683                 // Check if this is enum type
2684                         println("vector<int> retEnumInt;");
2685                         println("void* retObj = &retEnumInt;");
2686                         println("rmiCall->remoteCall(objectId, methodId, retType, paramCls, paramObj, numParam, retObj);");
2687                         if (isArrayOrList(retType, retType)) {  // An array or vector
2688                                 println("int retLen = retEnumInt.size();");
2689                                 println("vector<" + pureType + "> retVal(retLen);");
2690                                 println("for (int i = 0; i < retLen; i++) {");
2691                                 println("retVal[i] = (" + pureType + ") retEnumInt[i];");
2692                                 println("}");
2693                         } else {        // Just one element
2694                                 println(pureType + " retVal = (" + pureType + ") retEnumInt[0];");
2695                         }
2696                         println("return retVal;");
2697                 }
2698         }
2699
2700
2701         /**
2702          * HELPER: checkAndWriteStructSetupCplusStub() writes the struct type setup
2703          */
2704         private void checkAndWriteStructSetupCplusStub(List<String> methParams, List<String> methPrmTypes,
2705                         InterfaceDecl intDecl, String method) {
2706
2707                 // Iterate and find struct declarations
2708                 for (int i = 0; i < methParams.size(); i++) {
2709                         String paramType = methPrmTypes.get(i);
2710                         String param = methParams.get(i);
2711                         String simpleType = getGenericType(paramType);
2712                         if (isStructClass(simpleType)) {
2713                         // Check if this is enum type
2714                                 println("int numParam" + i + " = 1;");
2715                                 int methodNumId = intDecl.getMethodNumId(method);
2716                                 String helperMethod = methodNumId + "struct" + i;
2717                                 println("int methodIdStruct" + i + " = " + intDecl.getHelperMethodNumId(helperMethod) + ";");
2718                                 println("string retTypeStruct" + i + " = \"void\";");
2719                                 println("string paramClsStruct" + i + "[] = { \"int\" };");
2720                                 print("int structLen" + i + " = ");
2721                                 if (isArrayOrList(paramType, param)) {  // An array
2722                                         println(getSimpleArrayType(param) + ".size();");
2723                                 } else {        // Just one element
2724                                         println("1;");
2725                                 }
2726                                 println("void* paramObjStruct" + i + "[] = { &structLen" + i + " };");
2727                                 println("void* retStructLen" + i + " = NULL;");
2728                                 println("rmiCall->remoteCall(objectId, methodIdStruct" + i +
2729                                                 ", retTypeStruct" + i + ", paramClsStruct" + i + ", paramObjStruct" + i +
2730                                                 ", numParam" + i + ", retStructLen" + i + ");\n");
2731                         }
2732                 }
2733         }
2734
2735
2736         /**
2737          * HELPER: writeLengthStructParamClassCplusStub() writes lengths of params
2738          */
2739         private void writeLengthStructParamClassCplusStub(List<String> methParams, List<String> methPrmTypes) {
2740
2741                 // Iterate and find struct declarations - count number of params
2742                 for (int i = 0; i < methParams.size(); i++) {
2743                         String paramType = methPrmTypes.get(i);
2744                         String param = methParams.get(i);
2745                         String simpleType = getGenericType(paramType);
2746                         if (isStructClass(simpleType)) {
2747                                 int members = getNumOfMembers(simpleType);
2748                                 if (isArrayOrList(paramType, param)) {  // An array or list
2749                                         String structLen = getSimpleIdentifier(param) + ".size()";
2750                                         print(members + "*" + structLen);
2751                                 } else
2752                                         print(Integer.toString(members));
2753                         } else
2754                                 print("1");
2755                         if (i != methParams.size() - 1) {
2756                                 print("+");
2757                         }
2758                 }
2759         }
2760
2761
2762         /**
2763          * HELPER: writeStructMembersCplusStub() writes member parameters of struct
2764          */
2765         private void writeStructMembersCplusStub(String simpleType, String paramType, String param) {
2766
2767                 // Get the struct declaration for this struct and generate initialization code
2768                 StructDecl structDecl = getStructDecl(simpleType);
2769                 List<String> memTypes = structDecl.getMemberTypes(simpleType);
2770                 List<String> members = structDecl.getMembers(simpleType);
2771                 if (isArrayOrList(paramType, param)) {  // An array or list
2772                         println("for(int i = 0; i < " + getSimpleIdentifier(param) + ".size(); i++) {");
2773                 }
2774                 if (isArrayOrList(paramType, param)) {  // An array or list
2775                         for (int i = 0; i < members.size(); i++) {
2776                                 String prmTypeC = checkAndGetCplusArgClsType(memTypes.get(i), members.get(i));
2777                                 println("paramCls[pos] = \"" + prmTypeC + "\";");
2778                                 print("paramObj[pos++] = &" + getSimpleIdentifier(param) + "[i].");
2779                                 print(getSimpleIdentifier(members.get(i)));
2780                                 println(";");
2781                         }
2782                         println("}");
2783                 } else {        // Just one struct element
2784                         for (int i = 0; i < members.size(); i++) {
2785                                 String prmTypeC = checkAndGetCplusArgClsType(memTypes.get(i), members.get(i));
2786                                 println("paramCls[pos] = \"" + prmTypeC + "\";");
2787                                 print("paramObj[pos++] = &" + param + ".");
2788                                 print(getSimpleIdentifier(members.get(i)));
2789                                 println(";");
2790                         }
2791                 }
2792         }
2793
2794
2795         /**
2796          * HELPER: writeStructParamClassCplusStub() writes member parameters of struct
2797          */
2798         private void writeStructParamClassCplusStub(List<String> methParams, List<String> methPrmTypes, String callbackType) {
2799
2800                 print("int numParam = ");
2801                 writeLengthStructParamClassCplusStub(methParams, methPrmTypes);
2802                 println(";");
2803                 println("void* paramObj[numParam];");
2804                 println("string paramCls[numParam];");
2805                 println("int pos = 0;");
2806                 // Iterate again over the parameters
2807                 for (int i = 0; i < methParams.size(); i++) {
2808                         String paramType = methPrmTypes.get(i);
2809                         String param = methParams.get(i);
2810                         String simpleType = getGenericType(paramType);
2811                         if (isStructClass(simpleType)) {
2812                                 writeStructMembersCplusStub(simpleType, paramType, param);
2813                         } else if (checkCallbackType(paramType, callbackType)) { // Check if this has callback object
2814                                 println("paramCls[pos] = \"int\";");
2815                                 println("paramObj[pos++] = &___paramCB" + i + ";");
2816                         } else {
2817                                 String prmTypeC = checkAndGetCplusArgClsType(methPrmTypes.get(i), methParams.get(i));
2818                                 println("paramCls[pos] = \"" + prmTypeC + "\";");
2819                                 print("paramObj[pos++] = &");
2820                                 print(getEnumParam(methPrmTypes.get(i), getSimpleIdentifier(methParams.get(i)), i));
2821                                 println(";");
2822                         }
2823                 }
2824
2825         }
2826
2827
2828         /**
2829          * HELPER: writeStructRetMembersCplusStub() writes member parameters of struct for return statement
2830          */
2831         private void writeStructRetMembersCplusStub(String simpleType, String retType) {
2832
2833                 // Get the struct declaration for this struct and generate initialization code
2834                 StructDecl structDecl = getStructDecl(simpleType);
2835                 List<String> memTypes = structDecl.getMemberTypes(simpleType);
2836                 List<String> members = structDecl.getMembers(simpleType);
2837                 if (isArrayOrList(retType, retType)) {  // An array or list
2838                         println("for(int i = 0; i < retLen; i++) {");
2839                 }
2840                 if (isArrayOrList(retType, retType)) {  // An array or list
2841                         for (int i = 0; i < members.size(); i++) {
2842                                 String prmType = checkAndGetArray(memTypes.get(i), members.get(i));
2843                                 print("structRet[i]." + getSimpleIdentifier(members.get(i)));
2844                                 println(" = retParam" + i + "[i];");
2845                         }
2846                         println("}");
2847                 } else {        // Just one struct element
2848                         for (int i = 0; i < members.size(); i++) {
2849                                 String prmType = checkAndGetArray(memTypes.get(i), members.get(i));
2850                                 print("structRet." + getSimpleIdentifier(members.get(i)));
2851                                 println(" = retParam" + i + ";");
2852                         }
2853                 }
2854                 println("return structRet;");
2855         }
2856
2857
2858         /**
2859          * HELPER: writeStructReturnCplusStub() writes member parameters of struct for return statement
2860          */
2861         private void writeStructReturnCplusStub(String simpleType, String retType) {
2862
2863                 // Minimum retLen is 1 if this is a single struct object
2864                 println("int retLen = 0;");
2865                 println("void* retLenObj = { &retLen };");
2866                 // Handle the returned struct!!!
2867                 println("rmiCall->remoteCall(objectId, methodId, retType, paramCls, paramObj, numParam, retLenObj);");
2868                 int numMem = getNumOfMembers(simpleType);
2869                 println("int numRet = " + numMem + "*retLen;");
2870                 println("string retCls[numRet];");
2871                 println("void* retObj[numRet];");
2872                 StructDecl structDecl = getStructDecl(simpleType);
2873                 List<String> memTypes = structDecl.getMemberTypes(simpleType);
2874                 List<String> members = structDecl.getMembers(simpleType);
2875                 // Set up variables
2876                 if (isArrayOrList(retType, retType)) {  // An array or list
2877                         for (int i = 0; i < members.size(); i++) {
2878                                 String prmTypeC = checkAndGetCplusType(memTypes.get(i));
2879                                 String prmType = checkAndGetCplusArrayType(prmTypeC, members.get(i));
2880                                 println(getSimpleType(getEnumType(prmType)) + " retParam" + i + "[retLen];");
2881                         }
2882                 } else {        // Just one struct element
2883                         for (int i = 0; i < members.size(); i++) {
2884                                 String prmTypeC = checkAndGetCplusType(memTypes.get(i));
2885                                 String prmType = checkAndGetCplusArrayType(prmTypeC, members.get(i));
2886                                 println(getSimpleType(getEnumType(prmType)) + " retParam" + i + ";");
2887                         }
2888                 }
2889                 println("int retPos = 0;");
2890                 // Get the struct declaration for this struct and generate initialization code
2891                 if (isArrayOrList(retType, retType)) {  // An array or list
2892                         println("for(int i = 0; i < retLen; i++) {");
2893                         for (int i = 0; i < members.size(); i++) {
2894                                 String prmTypeC = checkAndGetCplusArgClsType(memTypes.get(i), members.get(i));
2895                                 println("retCls[retPos] = \"" + prmTypeC + "\";");
2896                                 println("retObj[retPos++] = &retParam" + i + "[i];");
2897                         }
2898                         println("}");
2899                 } else {        // Just one struct element
2900                         for (int i = 0; i < members.size(); i++) {
2901                                 String prmTypeC = checkAndGetCplusArgClsType(memTypes.get(i), members.get(i));
2902                                 println("retCls[retPos] = \"" + prmTypeC + "\";");
2903                                 println("retObj[retPos++] = &retParam" + i + ";");
2904                         }
2905                 }
2906                 println("rmiCall->getStructObjects(retCls, numRet, retObj);");
2907                 if (isArrayOrList(retType, retType)) {  // An array or list
2908                         println("vector<" + simpleType + "> structRet(retLen);");
2909                 } else
2910                         println(simpleType + " structRet;");
2911                 writeStructRetMembersCplusStub(simpleType, retType);
2912         }
2913
2914
2915         /**
2916          * HELPER: writeStdMethodBodyCplusStub() writes the standard method body in the stub class
2917          */
2918         private void writeStdMethodBodyCplusStub(InterfaceDecl intDecl, List<String> methParams,
2919                         List<String> methPrmTypes, String method, String callbackType, boolean isCallbackMethod) {
2920
2921                 checkAndWriteStructSetupCplusStub(methParams, methPrmTypes, intDecl, method);
2922                 println("int methodId = " + intDecl.getMethodNumId(method) + ";");
2923                 String retType = intDecl.getMethodType(method);
2924                 println("string retType = \"" + checkAndGetCplusRetClsType(getStructType(getEnumType(retType))) + "\";");
2925                 checkAndWriteEnumTypeCplusStub(methParams, methPrmTypes);
2926                 // Generate array of parameter types
2927                 if (isStructPresent(methParams, methPrmTypes)) {
2928                         writeStructParamClassCplusStub(methParams, methPrmTypes, callbackType);
2929                 } else {
2930                         println("int numParam = " + methParams.size() + ";");
2931                         print("string paramCls[] = { ");
2932                         for (int i = 0; i < methParams.size(); i++) {
2933                                 String paramType = returnGenericCallbackType(methPrmTypes.get(i));
2934                                 if (checkCallbackType(paramType, callbackType)) {
2935                                         print("\"int\"");
2936                                 } else {
2937                                         String paramTypeC = checkAndGetCplusArgClsType(methPrmTypes.get(i), methParams.get(i));
2938                                         print("\"" + paramTypeC + "\"");
2939                                 }
2940                                 // Check if this is the last element (don't print a comma)
2941                                 if (i != methParams.size() - 1) {
2942                                         print(", ");
2943                                 }
2944                         }
2945                         println(" };");
2946                         // Generate array of parameter objects
2947                         print("void* paramObj[] = { ");
2948                         for (int i = 0; i < methParams.size(); i++) {
2949                                 String paramType = returnGenericCallbackType(methPrmTypes.get(i));
2950                                 if (checkCallbackType(paramType, callbackType)) // Check if this has callback object
2951                                         print("&___paramCB" + i);
2952                                 else
2953                                         print("&" + getEnumParam(methPrmTypes.get(i), getSimpleIdentifier(methParams.get(i)), i));
2954                                 // Check if this is the last element (don't print a comma)
2955                                 if (i != methParams.size() - 1) {
2956                                         print(", ");
2957                                 }
2958                         }
2959                         println(" };");
2960                 }
2961                 // Check if this is "void"
2962                 if (retType.equals("void")) {
2963                         println("void* retObj = NULL;");
2964                         println("rmiCall->remoteCall(objectId, methodId, retType, paramCls, paramObj, numParam, retObj);");
2965                 } else { // We do have a return value
2966                         // Generate array of parameter types
2967                         if (isStructClass(getGenericType(getSimpleArrayType(retType)))) {
2968                                 writeStructReturnCplusStub(getGenericType(getSimpleArrayType(retType)), retType);
2969                         } else {
2970                         // Check if the return value NONPRIMITIVES
2971                                 if (isEnumClass(getSimpleArrayType(getGenericType(retType)))) {
2972                                         checkAndWriteEnumRetTypeCplusStub(retType);
2973                                 } else {
2974                                         //if (getParamCategory(retType) == ParamCategory.NONPRIMITIVES)
2975                                         if (isArrayOrList(retType,retType))
2976                                                 println(checkAndGetCplusType(retType) + " retVal;");
2977                                         else {
2978                                                 println(checkAndGetCplusType(retType) + " retVal = " + generateCplusInitializer(retType) + ";");
2979                                         }
2980                                         println("void* retObj = &retVal;");
2981                                         println("rmiCall->remoteCall(objectId, methodId, retType, paramCls, paramObj, numParam, retObj);");
2982                                         println("return retVal;");
2983                                 }
2984                         }
2985                 }
2986         }
2987
2988
2989         /**
2990          * HELPER: writePropertiesCplusStub() writes the properties of the stub class
2991          */
2992         private void writePropertiesCplusPermission(String intface) {
2993
2994                 Map<String,Set<String>> mapNewIntMethods = mapInt2NewInts.get(intface);
2995                 for (Map.Entry<String,Set<String>> intMeth : mapNewIntMethods.entrySet()) {
2996                         String newIntface = intMeth.getKey();
2997                         int newObjectId = getNewIntfaceObjectId(newIntface);
2998                         println("const static int object" + newObjectId + "Id = " + newObjectId + ";\t//" + newIntface);
2999                         println("static set<int> set" + newObjectId + "Allowed;");
3000                 }
3001         }
3002
3003         /**
3004          * HELPER: writePropertiesCplusStub() writes the properties of the stub class
3005          */
3006         private void writePropertiesCplusStub(String intface, String newIntface, boolean callbackExist, Set<String> callbackClasses) {
3007
3008                 println("IoTRMICall *rmiCall;");
3009                 println("string callbackAddress;");
3010                 println("vector<int> ports;\n");
3011                 // Get the object Id
3012                 Integer objId = mapIntfaceObjId.get(intface);
3013                 println("const static int objectId = " + objId + ";");
3014                 mapNewIntfaceObjId.put(newIntface, objId);
3015                 mapIntfaceObjId.put(intface, objId++);
3016                 if (callbackExist) {
3017                 // We assume that each class only has one callback interface for now
3018                         Iterator it = callbackClasses.iterator();
3019                         String callbackType = (String) it.next();
3020                         println("// Callback properties");
3021                         println("IoTRMIObject *rmiObj;");
3022                         println("vector<" + callbackType + "*> vecCallbackObj;");
3023                         println("static int objIdCnt;");
3024                         // Generate permission stuff for callback stubs
3025                         writePropertiesCplusPermission(callbackType);
3026                 }
3027                 println("\n");
3028         }
3029
3030
3031         /**
3032          * HELPER: writeConstructorCplusStub() writes the constructor of the stub class
3033          */
3034         private void writeConstructorCplusStub(String newStubClass, boolean callbackExist, Set<String> callbackClasses) {
3035
3036                 println(newStubClass +
3037                         "(int _port, const char* _skeletonAddress, const char* _callbackAddress, int _rev, bool* _bResult, vector<int> _ports) {");
3038                 println("callbackAddress = _callbackAddress;");
3039                 println("ports = _ports;");
3040                 println("rmiCall = new IoTRMICall(_port, _skeletonAddress, _rev, _bResult);");
3041                 if (callbackExist) {
3042                         Iterator it = callbackClasses.iterator();
3043                         String callbackType = (String) it.next();
3044                         println("thread th1 (&" + newStubClass + "::___initCallBack, this);");
3045                         println("th1.detach();");
3046                         println("___regCB();");
3047                 }
3048                 println("}\n");
3049         }
3050
3051
3052         /**
3053          * HELPER: writeDeconstructorCplusStub() writes the deconstructor of the stub class
3054          */
3055         private void writeDeconstructorCplusStub(String newStubClass, boolean callbackExist, Set<String> callbackClasses) {
3056
3057                 println("~" + newStubClass + "() {");
3058                 println("if (rmiCall != NULL) {");
3059                 println("delete rmiCall;");
3060                 println("rmiCall = NULL;");
3061                 println("}");
3062                 if (callbackExist) {
3063                 // We assume that each class only has one callback interface for now
3064                         println("if (rmiObj != NULL) {");
3065                         println("delete rmiObj;");
3066                         println("rmiObj = NULL;");
3067                         println("}");
3068                         Iterator it = callbackClasses.iterator();
3069                         String callbackType = (String) it.next();
3070                         println("for(" + callbackType + "* cb : vecCallbackObj) {");
3071                         println("delete cb;");
3072                         println("cb = NULL;");
3073                         println("}");
3074                 }
3075                 println("}");
3076                 println("");
3077         }
3078
3079
3080         /**
3081          * HELPER: writeCplusMethodCallbackPermission() writes permission checks in stub for callbacks
3082          */
3083         private void writeCplusMethodCallbackPermission(String intface) {
3084
3085                 println("int methodId = IoTRMIObject::getMethodId(method);");
3086                 // Get all the different stubs
3087                 Map<String,Set<String>> mapNewIntMethods = mapInt2NewInts.get(intface);
3088                 for (Map.Entry<String,Set<String>> intMeth : mapNewIntMethods.entrySet()) {
3089                         String newIntface = intMeth.getKey();
3090                         int newObjectId = getNewIntfaceObjectId(newIntface);
3091                         println("if (set" + newObjectId + "Allowed.find(methodId) == set" + newObjectId + "Allowed.end()) {");
3092                         println("cerr << \"Callback object for " + intface + " is not allowed to access method: \" << methodId;");
3093                         println("return;");
3094                         println("}");
3095                 }
3096         }
3097
3098
3099         /**
3100          * HELPER: writeInitCallbackCplusStub() writes the initialization of callback
3101          */
3102         private void writeInitCallbackCplusStub(String intface, InterfaceDecl intDecl) {
3103
3104                 println("void ___initCallBack() {");
3105                 println("bool bResult = false;");
3106                 println("rmiObj = new IoTRMIObject(ports[0], &bResult);");
3107                 println("while (true) {");
3108                 println("char* method = rmiObj->getMethodBytes();");
3109                 writeCplusMethodCallbackPermission(intface);
3110                 println("int objId = IoTRMIObject::getObjectId(method);");
3111                 println("if (objId < vecCallbackObj.size()) {   // Check if still within range");
3112                 println(intface + "_CallbackSkeleton* skel = dynamic_cast<" + intface +
3113                         "_CallbackSkeleton*> (vecCallbackObj.at(objId));");
3114                 println("skel->invokeMethod(rmiObj);");
3115                 print("}");
3116                 println(" else {");
3117                 println("cerr << \"Illegal object Id: \" << to_string(objId);");
3118                 // TODO: perhaps need to change this into "throw" to make it cleaner (allow stack unfolding)
3119                 println("return;");
3120                 println("}");
3121                 println("}");
3122                 println("}\n");
3123         }
3124
3125
3126         /**
3127          * HELPER: writeCplusInitCallbackPermission() writes the permission for callback
3128          */
3129         private void writeCplusInitCallbackPermission(String intface, InterfaceDecl intDecl, boolean callbackExist) {
3130
3131                 if (callbackExist) {
3132                         String method = "___initCallBack()";
3133                         int methodNumId = intDecl.getHelperMethodNumId(method);
3134                         Map<String,Set<String>> mapNewIntMethods = mapInt2NewInts.get(intface);
3135                         for (Map.Entry<String,Set<String>> intMeth : mapNewIntMethods.entrySet()) {
3136                                 String newIntface = intMeth.getKey();
3137                                 int newObjectId = getNewIntfaceObjectId(newIntface);
3138                                 println("set" + newObjectId + "Allowed.insert(" + methodNumId + ");");
3139                         }
3140                 }
3141         }
3142
3143
3144         /**
3145          * HELPER: writeInitCallbackSendInfoCplusStub() writes the initialization (send info part) of callback
3146          */
3147         private void writeInitCallbackSendInfoCplusStub(InterfaceDecl intDecl) {
3148
3149                 // Generate info sending part
3150                 println("void ___regCB() {");
3151                 println("int numParam = 3;");
3152                 String method = "___initCallBack()";
3153                 int methodNumId = intDecl.getHelperMethodNumId(method);
3154                 println("int methodId = " + methodNumId + ";");
3155                 println("string retType = \"void\";");
3156                 println("string paramCls[] = { \"int\", \"String\", \"int\" };");
3157                 println("int rev = 0;");
3158                 println("void* paramObj[] = { &ports[0], &callbackAddress, &rev };");
3159                 println("void* retObj = NULL;");
3160                 println("rmiCall->remoteCall(objectId, methodId, retType, paramCls, paramObj, numParam, retObj);");
3161                 println("}\n");
3162         }
3163
3164
3165         /**
3166          * generateCPlusStubClasses() generate stubs based on the methods list in C++
3167          */
3168         public void generateCPlusStubClasses() throws IOException {
3169
3170                 // Create a new directory
3171                 String path = createDirectories(dir, subdir);
3172                 for (String intface : mapIntfacePTH.keySet()) {
3173
3174                         Map<String,Set<String>> mapNewIntMethods = mapInt2NewInts.get(intface);
3175                         for (Map.Entry<String,Set<String>> intMeth : mapNewIntMethods.entrySet()) {
3176                                 // Open a new file to write into
3177                                 String newIntface = intMeth.getKey();
3178                                 String newStubClass = newIntface + "_Stub";
3179                                 FileWriter fw = new FileWriter(path + "/" + newStubClass + ".hpp");
3180                                 pw = new PrintWriter(new BufferedWriter(fw));
3181                                 // Write file headers
3182                                 println("#ifndef _" + newStubClass.toUpperCase() + "_HPP__");
3183                                 println("#define _" + newStubClass.toUpperCase() + "_HPP__");
3184                                 println("#include <iostream>");
3185                                 // Find out if there are callback objects
3186                                 Set<String> methods = intMeth.getValue();
3187                                 DeclarationHandler decHandler = mapIntDeclHand.get(intface);
3188                                 InterfaceDecl intDecl = (InterfaceDecl) decHandler.getInterfaceDecl(intface);
3189                                 Set<String> callbackClasses = getCallbackClasses(methods, intDecl);
3190                                 boolean callbackExist = !callbackClasses.isEmpty();
3191                                 if (callbackExist)      // Need thread library if this has callback
3192                                         println("#include <thread>");
3193                                 println("#include \"" + newIntface + ".hpp\""); println("");
3194                                 println("using namespace std;"); println("");
3195                                 println("class " + newStubClass + " : public " + newIntface); println("{");
3196                                 println("private:\n");
3197                                 writePropertiesCplusStub(intface, newIntface, callbackExist, callbackClasses);
3198                                 println("public:\n");
3199                                 // Add default constructor and destructor
3200                                 println(newStubClass + "() { }"); println("");
3201                                 writeConstructorCplusStub(newStubClass, callbackExist, callbackClasses);
3202                                 writeDeconstructorCplusStub(newStubClass, callbackExist, callbackClasses);
3203                                 // Write methods
3204                                 writeMethodCplusStub(methods, intDecl, callbackClasses);
3205                                 print("}"); println(";");
3206                                 if (callbackExist) {
3207                                         Iterator it = callbackClasses.iterator();
3208                                         String callbackType = (String) it.next();
3209                                         // Generate permission stuff for callback stubs
3210                                         DeclarationHandler decHandlerCallback = mapIntDeclHand.get(callbackType);
3211                                         InterfaceDecl intDeclCallback = (InterfaceDecl) decHandlerCallback.getInterfaceDecl(callbackType);
3212                                         writePermissionInitializationCplus(callbackType, newStubClass, intDeclCallback);
3213                                 }
3214                                 writeObjectIdCountInitializationCplus(newStubClass, callbackExist);
3215                                 println("#endif");
3216                                 pw.close();
3217                                 System.out.println("IoTCompiler: Generated stub class " + newStubClass + ".hpp...");
3218                         }
3219                 }
3220         }
3221
3222
3223         /**
3224          * HELPER: writePropertiesCplusCallbackStub() writes the properties of the stub class
3225          */
3226         private void writePropertiesCplusCallbackStub(String intface, String newIntface, boolean callbackExist, Set<String> callbackClasses) {
3227
3228                 println("IoTRMICall *rmiCall;");
3229                 // Get the object Id
3230                 println("int objectId;");
3231                 if (callbackExist) {
3232                 // We assume that each class only has one callback interface for now
3233                         Iterator it = callbackClasses.iterator();
3234                         String callbackType = (String) it.next();
3235                         println("// Callback properties");
3236                         println("IoTRMIObject *rmiObj;");
3237                         println("vector<" + callbackType + "*> vecCallbackObj;");
3238                         println("static int objIdCnt;");
3239                         // TODO: Need to initialize address and ports if we want to have callback-in-callback
3240                         println("string address;");
3241                         println("vector<int> ports;\n");
3242                         writePropertiesCplusPermission(callbackType);
3243                 }
3244                 println("\n");
3245         }
3246
3247
3248         /**
3249          * HELPER: writeConstructorCplusCallbackStub() writes the constructor of the stub class
3250          */
3251         private void writeConstructorCplusCallbackStub(String newStubClass, boolean callbackExist, Set<String> callbackClasses) {
3252
3253                 println(newStubClass + "(IoTRMICall* _rmiCall, int _objectId) {");
3254                 println("objectId = _objectId;");
3255                 println("rmiCall = _rmiCall;");
3256                 if (callbackExist) {
3257                         Iterator it = callbackClasses.iterator();
3258                         String callbackType = (String) it.next();
3259                         println("thread th1 (&" + newStubClass + "::___initCallBack, this);");
3260                         println("th1.detach();");
3261                         println("___regCB();");
3262                 }
3263                 println("}\n");
3264         }
3265
3266
3267         /**
3268          * generateCPlusCallbackStubClasses() generate callback stubs based on the methods list in C++
3269          */
3270         public void generateCPlusCallbackStubClasses() throws IOException {
3271
3272                 // Create a new directory
3273                 String path = createDirectories(dir, subdir);
3274                 for (String intface : mapIntfacePTH.keySet()) {
3275
3276                         Map<String,Set<String>> mapNewIntMethods = mapInt2NewInts.get(intface);
3277                         for (Map.Entry<String,Set<String>> intMeth : mapNewIntMethods.entrySet()) {
3278                                 // Open a new file to write into
3279                                 String newIntface = intMeth.getKey();
3280                                 String newStubClass = newIntface + "_CallbackStub";
3281                                 FileWriter fw = new FileWriter(path + "/" + newStubClass + ".hpp");
3282                                 pw = new PrintWriter(new BufferedWriter(fw));
3283                                 // Find out if there are callback objects
3284                                 Set<String> methods = intMeth.getValue();
3285                                 DeclarationHandler decHandler = mapIntDeclHand.get(intface);
3286                                 InterfaceDecl intDecl = (InterfaceDecl) decHandler.getInterfaceDecl(intface);
3287                                 Set<String> callbackClasses = getCallbackClasses(methods, intDecl);
3288                                 boolean callbackExist = !callbackClasses.isEmpty();
3289                                 // Write file headers
3290                                 println("#ifndef _" + newStubClass.toUpperCase() + "_HPP__");
3291                                 println("#define _" + newStubClass.toUpperCase() + "_HPP__");
3292                                 println("#include <iostream>");
3293                                 if (callbackExist)
3294                                         println("#include <thread>");
3295                                 println("#include \"" + newIntface + ".hpp\""); println("");
3296                                 println("using namespace std;"); println("");
3297                                 println("class " + newStubClass + " : public " + newIntface); println("{");
3298                                 println("private:\n");
3299                                 writePropertiesCplusCallbackStub(intface, newIntface, callbackExist, callbackClasses);
3300                                 println("public:\n");
3301                                 // Add default constructor and destructor
3302                                 println(newStubClass + "() { }"); println("");
3303                                 writeConstructorCplusCallbackStub(newStubClass, callbackExist, callbackClasses);
3304                                 writeDeconstructorCplusStub(newStubClass, callbackExist, callbackClasses);
3305                                 // Write methods
3306                                 writeMethodCplusStub(methods, intDecl, callbackClasses);
3307                                 println("};");
3308                                 if (callbackExist) {
3309                                         Iterator it = callbackClasses.iterator();
3310                                         String callbackType = (String) it.next();
3311                                         // Generate permission stuff for callback stubs
3312                                         DeclarationHandler decHandlerCallback = mapIntDeclHand.get(callbackType);
3313                                         InterfaceDecl intDeclCallback = (InterfaceDecl) decHandlerCallback.getInterfaceDecl(callbackType);
3314                                         writePermissionInitializationCplus(callbackType, newStubClass, intDeclCallback);
3315                                 }
3316                                 writeObjectIdCountInitializationCplus(newStubClass, callbackExist);
3317                                 println("#endif");
3318                                 pw.close();
3319                                 System.out.println("IoTCompiler: Generated callback stub class " + newIntface + ".hpp...");
3320                         }
3321                 }
3322         }
3323
3324
3325         /**
3326          * HELPER: writePropertiesCplusSkeleton() writes the properties of the skeleton class
3327          */
3328         private void writePropertiesCplusSkeleton(String intface, boolean callbackExist, Set<String> callbackClasses) {
3329
3330                 println(intface + " *mainObj;");
3331                 // Callback
3332                 if (callbackExist) {
3333                         Iterator it = callbackClasses.iterator();
3334                         String callbackType = (String) it.next();
3335                         String exchangeType = checkAndGetParamClass(callbackType);
3336                         println("// Callback properties");
3337                         println("static int objIdCnt;");
3338                         println("vector<" + exchangeType + "*> vecCallbackObj;");
3339                         println("IoTRMICall *rmiCall;");
3340                 }
3341                 println("IoTRMIObject *rmiObj;\n");
3342                 // Keep track of object Ids of all stubs registered to this interface
3343                 writePropertiesCplusPermission(intface);
3344                 println("\n");
3345         }
3346
3347
3348         /**
3349          * HELPER: writeObjectIdCountInitializationCplus() writes the initialization of objIdCnt variable
3350          */
3351         private void writeObjectIdCountInitializationCplus(String newSkelClass, boolean callbackExist) {
3352
3353                 if (callbackExist)
3354                         println("int " + newSkelClass + "::objIdCnt = 0;");
3355         }
3356
3357
3358         /**
3359          * HELPER: writePermissionInitializationCplus() writes the initialization of permission set
3360          */
3361         private void writePermissionInitializationCplus(String intface, String newSkelClass, InterfaceDecl intDecl) {
3362
3363                 // Keep track of object Ids of all stubs registered to this interface
3364                 Map<String,Set<String>> mapNewIntMethods = mapInt2NewInts.get(intface);
3365                 for (Map.Entry<String,Set<String>> intMeth : mapNewIntMethods.entrySet()) {
3366                         String newIntface = intMeth.getKey();
3367                         int newObjectId = getNewIntfaceObjectId(newIntface);
3368                         print("set<int> " + newSkelClass + "::set" + newObjectId + "Allowed { ");
3369                         Set<String> methodIds = intMeth.getValue();
3370                         int i = 0;
3371                         for (String methodId : methodIds) {
3372                                 int methodNumId = intDecl.getMethodNumId(methodId);
3373                                 print(Integer.toString(methodNumId));
3374                                 // Check if this is the last element (don't print a comma)
3375                                 if (i != methodIds.size() - 1) {
3376                                         print(", ");
3377                                 }
3378                                 i++;
3379                         }
3380                         println(" };");
3381                 }
3382         }
3383
3384
3385         /**
3386          * HELPER: writeStructPermissionCplusSkeleton() writes permission for struct helper
3387          */
3388         private void writeStructPermissionCplusSkeleton(Collection<String> methods, InterfaceDecl intDecl, String intface) {
3389
3390                 // Use this set to handle two same methodIds
3391                 for (String method : methods) {
3392                         List<String> methParams = intDecl.getMethodParams(method);
3393                         List<String> methPrmTypes = intDecl.getMethodParamTypes(method);
3394                         // Check for params with structs
3395                         for (int i = 0; i < methParams.size(); i++) {
3396                                 String paramType = methPrmTypes.get(i);
3397                                 String param = methParams.get(i);
3398                                 String simpleType = getGenericType(paramType);
3399                                 if (isStructClass(simpleType)) {
3400                                         int methodNumId = intDecl.getMethodNumId(method);
3401                                         String helperMethod = methodNumId + "struct" + i;
3402                                         int helperMethodNumId = intDecl.getHelperMethodNumId(helperMethod);
3403                                         // Iterate over interfaces to give permissions to
3404                                         Map<String,Set<String>> mapNewIntMethods = mapInt2NewInts.get(intface);
3405                                         for (Map.Entry<String,Set<String>> intMeth : mapNewIntMethods.entrySet()) {
3406                                                 String newIntface = intMeth.getKey();
3407                                                 int newObjectId = getNewIntfaceObjectId(newIntface);
3408                                                 println("set" + newObjectId + "Allowed.insert(" + helperMethodNumId + ");");
3409                                         }
3410                                 }
3411                         }
3412                 }
3413         }
3414
3415
3416         /**
3417          * HELPER: writeConstructorCplusSkeleton() writes the constructor of the skeleton class
3418          */
3419         private void writeConstructorCplusSkeleton(String newSkelClass, String intface, boolean callbackExist, InterfaceDecl intDecl, Collection<String> methods) {
3420
3421                 println(newSkelClass + "(" + intface + " *_mainObj, int _port) {");
3422                 println("bool _bResult = false;");
3423                 println("mainObj = _mainObj;");
3424                 println("rmiObj = new IoTRMIObject(_port, &_bResult);");
3425                 writeCplusInitCallbackPermission(intface, intDecl, callbackExist);
3426                 writeStructPermissionCplusSkeleton(methods, intDecl, intface);
3427                 println("___waitRequestInvokeMethod();");
3428                 println("}\n");
3429         }
3430
3431
3432         /**
3433          * HELPER: writeDeconstructorCplusSkeleton() writes the deconstructor of the skeleton class
3434          */
3435         private void writeDeconstructorCplusSkeleton(String newSkelClass, boolean callbackExist, Set<String> callbackClasses) {
3436
3437                 println("~" + newSkelClass + "() {");
3438                 println("if (rmiObj != NULL) {");
3439                 println("delete rmiObj;");
3440                 println("rmiObj = NULL;");
3441                 println("}");
3442                 if (callbackExist) {
3443                 // We assume that each class only has one callback interface for now
3444                         println("if (rmiCall != NULL) {");
3445                         println("delete rmiCall;");
3446                         println("rmiCall = NULL;");
3447                         println("}");
3448                         Iterator it = callbackClasses.iterator();
3449                         String callbackType = (String) it.next();
3450                         String exchangeType = checkAndGetParamClass(callbackType);
3451                         println("for(" + exchangeType + "* cb : vecCallbackObj) {");
3452                         println("delete cb;");
3453                         println("cb = NULL;");
3454                         println("}");
3455                 }
3456                 println("}");
3457                 println("");
3458         }
3459
3460
3461         /**
3462          * HELPER: writeStdMethodBodyCplusSkeleton() writes the standard method body in the skeleton class
3463          */
3464         private void writeStdMethodBodyCplusSkeleton(List<String> methParams, String methodId, String methodType) {
3465
3466                 if (methodType.equals("void"))
3467                         print("mainObj->" + methodId + "(");
3468                 else
3469                         print("return mainObj->" + methodId + "(");
3470                 for (int i = 0; i < methParams.size(); i++) {
3471
3472                         print(getSimpleIdentifier(methParams.get(i)));
3473                         // Check if this is the last element (don't print a comma)
3474                         if (i != methParams.size() - 1) {
3475                                 print(", ");
3476                         }
3477                 }
3478                 println(");");
3479         }
3480
3481
3482         /**
3483          * HELPER: writeInitCallbackCplusSkeleton() writes the init callback method for skeleton class
3484          */
3485         private void writeInitCallbackCplusSkeleton(boolean callbackSkeleton) {
3486
3487                 // This is a callback skeleton generation
3488                 if (callbackSkeleton)
3489                         println("void ___regCB(IoTRMIObject* rmiObj) {");
3490                 else
3491                         println("void ___regCB() {");
3492                 println("int numParam = 3;");
3493                 println("int param1 = 0;");
3494                 println("string param2 = \"\";");
3495                 println("int param3 = 0;");
3496                 println("string paramCls[] = { \"int\", \"String\", \"int\" };");
3497                 println("void* paramObj[] = { &param1, &param2, &param3 };");
3498                 println("rmiObj->getMethodParams(paramCls, numParam, paramObj);");
3499                 println("bool bResult = false;");
3500                 println("rmiCall = new IoTRMICall(param1, param2.c_str(), param3, &bResult);");
3501                 println("}\n");
3502         }
3503
3504
3505         /**
3506          * HELPER: writeMethodCplusSkeleton() writes the method of the skeleton class
3507          */
3508         private void writeMethodCplusSkeleton(Collection<String> methods, InterfaceDecl intDecl,
3509                         Set<String> callbackClasses, boolean callbackSkeleton) {
3510
3511                 boolean isDefined = false;
3512                 for (String method : methods) {
3513
3514                         List<String> methParams = intDecl.getMethodParams(method);
3515                         List<String> methPrmTypes = intDecl.getMethodParamTypes(method);
3516                         String methodId = intDecl.getMethodId(method);
3517                         String methodType = checkAndGetCplusType(intDecl.getMethodType(method));
3518                         print(methodType + " " + methodId + "(");
3519                         boolean isCallbackMethod = false;
3520                         String callbackType = null;
3521                         for (int i = 0; i < methParams.size(); i++) {
3522
3523                                 String origParamType = methPrmTypes.get(i);
3524                                 if (callbackClasses.contains(origParamType)) { // Check if this has callback object
3525                                         isCallbackMethod = true;
3526                                         callbackType = origParamType;
3527                                 }
3528                                 String paramType = checkAndGetParamClass(methPrmTypes.get(i));
3529                                 String methPrmType = checkAndGetCplusType(paramType);
3530                                 String methParamComplete = checkAndGetCplusArray(methPrmType, methParams.get(i));
3531                                 print(methParamComplete);
3532                                 // Check if this is the last element (don't print a comma)
3533                                 if (i != methParams.size() - 1) {
3534                                         print(", ");
3535                                 }
3536                         }
3537                         println(") {");
3538                         // Now, write the body of skeleton!
3539                         writeStdMethodBodyCplusSkeleton(methParams, methodId, intDecl.getMethodType(method));
3540                         println("}\n");
3541                         if (isCallbackMethod && !isDefined) {
3542                                 writeInitCallbackCplusSkeleton(callbackSkeleton);
3543                                 isDefined = true;
3544                         }
3545                 }
3546         }
3547
3548
3549         /**
3550          * HELPER: writeCallbackCplusNumStubs() writes the numStubs variable
3551          */
3552         private void writeCallbackCplusNumStubs(List<String> methParams, List<String> methPrmTypes, String callbackType) {
3553
3554                 for (int i = 0; i < methParams.size(); i++) {
3555                         String paramType = methPrmTypes.get(i);
3556                         String param = methParams.get(i);
3557                         //if (callbackType.equals(paramType)) {
3558                         if (checkCallbackType(paramType, callbackType)) // Check if this has callback object
3559                                 println("int numStubs" + i + " = 0;");
3560                 }
3561         }
3562
3563
3564         /**
3565          * HELPER: writeCallbackCplusStubGeneration() writes the callback stub generation part
3566          */
3567         private void writeCallbackCplusStubGeneration(List<String> methParams, List<String> methPrmTypes, String callbackType) {
3568
3569                 // Iterate over callback objects
3570                 for (int i = 0; i < methParams.size(); i++) {
3571                         String paramType = methPrmTypes.get(i);
3572                         String param = methParams.get(i);
3573                         // Generate a loop if needed
3574                         if (checkCallbackType(paramType, callbackType)) { // Check if this has callback object
3575                                 String exchParamType = checkAndGetParamClass(getGenericType(paramType));
3576                                 if (isArrayOrList(paramType, param)) {
3577                                         println("vector<" + exchParamType + "*> stub" + i + ";");
3578                                         println("for (int objId = 0; objId < numStubs" + i + "; objId++) {");
3579                                         println(exchParamType + "* cb" + i + " = new " + exchParamType + "_CallbackStub(rmiCall, objIdCnt);");
3580                                         println("stub" + i + ".push_back(cb" + i + ");");
3581                                         println("vecCallbackObj.push_back(cb" + i + ");");
3582                                         println("objIdCnt++;");
3583                                         println("}");
3584                                 } else {
3585                                         println(exchParamType + "* stub" + i + " = new " + exchParamType + "_CallbackStub(rmiCall, objIdCnt);");
3586                                         println("vecCallbackObj.push_back(stub" + i + ");");
3587                                         println("objIdCnt++;");
3588                                 }
3589                         }
3590                 }
3591         }
3592
3593
3594         /**
3595          * HELPER: checkAndWriteEnumTypeCplusSkeleton() writes the enum type (convert from enum to int)
3596          */
3597         private void checkAndWriteEnumTypeCplusSkeleton(List<String> methParams, List<String> methPrmTypes) {
3598
3599                 // Iterate and find enum declarations
3600                 for (int i = 0; i < methParams.size(); i++) {
3601                         String paramType = methPrmTypes.get(i);
3602                         String param = methParams.get(i);
3603                         String simpleType = getGenericType(paramType);
3604                         if (isEnumClass(simpleType)) {
3605                         // Check if this is enum type
3606                                 if (isArrayOrList(paramType, param)) {  // An array
3607                                         println("int len" + i + " = paramEnumInt" + i + ".size();");
3608                                         println("vector<" + simpleType + "> paramEnum" + i + "(len" + i + ");");
3609                                         println("for (int i=0; i < len" + i + "; i++) {");
3610                                         println("paramEnum" + i + "[i] = (" + simpleType + ") paramEnumInt" + i + "[i];");
3611                                         println("}");
3612                                 } else {        // Just one element
3613                                         println(simpleType + " paramEnum" + i + ";");
3614                                         println("paramEnum" + i + " = (" + simpleType + ") paramEnumInt" + i + "[0];");
3615                                 }
3616                         }
3617                 }
3618         }
3619
3620
3621         /**
3622          * HELPER: checkAndWriteEnumRetTypeCplusSkeleton() writes the enum return type (convert from enum to int)
3623          */
3624         private void checkAndWriteEnumRetTypeCplusSkeleton(String retType) {
3625
3626                 // Strips off array "[]" for return type
3627                 String pureType = getSimpleArrayType(getGenericType(retType));
3628                 // Take the inner type of generic
3629                 if (getParamCategory(retType) == ParamCategory.NONPRIMITIVES)
3630                         pureType = getGenericType(retType);
3631                 if (isEnumClass(pureType)) {
3632                 // Check if this is enum type
3633                         // Enum decoder
3634                         if (isArrayOrList(retType, retType)) {  // An array
3635                                 println("int retLen = retEnum.size();");
3636                                 println("vector<int> retEnumInt(retLen);");
3637                                 println("for (int i=0; i < retLen; i++) {");
3638                                 println("retEnumInt[i] = (int) retEnum[i];");
3639                                 println("}");
3640                         } else {        // Just one element
3641                                 println("vector<int> retEnumInt(1);");
3642                                 println("retEnumInt[0] = (int) retEnum;");
3643                         }
3644                 }
3645         }
3646
3647
3648         /**
3649          * HELPER: writeMethodInputParameters() writes the parameter variables for C++ skeleton
3650          */
3651         private void writeMethodInputParameters(List<String> methParams, List<String> methPrmTypes,
3652                         Set<String> callbackClasses, String methodId) {
3653
3654                 print(methodId + "(");
3655                 for (int i = 0; i < methParams.size(); i++) {
3656                         String paramType = returnGenericCallbackType(methPrmTypes.get(i));
3657                         if (callbackClasses.contains(paramType))
3658                                 print("stub" + i);
3659                         else if (isEnumClass(getGenericType(paramType)))        // Check if this is enum type
3660                                 print("paramEnum" + i);
3661                         else if (isStructClass(getGenericType(paramType)))      // Struct type
3662                                 print("paramStruct" + i);
3663                         else
3664                                 print(getSimpleIdentifier(methParams.get(i)));
3665                         if (i != methParams.size() - 1) {
3666                                 print(", ");
3667                         }
3668                 }
3669                 println(");");
3670         }
3671
3672
3673         /**
3674          * HELPER: writeMethodHelperReturnCplusSkeleton() writes the return statement part in skeleton
3675          */
3676         private void writeMethodHelperReturnCplusSkeleton(InterfaceDecl intDecl, List<String> methParams,
3677                         List<String> methPrmTypes, String method, boolean isCallbackMethod, String callbackType,
3678                         String methodId, Set<String> callbackClasses) {
3679
3680                 println("rmiObj->getMethodParams(paramCls, numParam, paramObj);");
3681                 if (isCallbackMethod)
3682                         writeCallbackCplusStubGeneration(methParams, methPrmTypes, callbackType);
3683                 checkAndWriteEnumTypeCplusSkeleton(methParams, methPrmTypes);
3684                 writeStructMembersInitCplusSkeleton(intDecl, methParams, methPrmTypes, method);
3685                 // Check if this is "void"
3686                 String retType = intDecl.getMethodType(method);
3687                 // Check if this is "void"
3688                 if (retType.equals("void")) {
3689                         writeMethodInputParameters(methParams, methPrmTypes, callbackClasses, methodId);
3690                 } else { // We do have a return value
3691                         if (isEnumClass(getSimpleArrayType(getGenericType(retType)))) // Enum type
3692                                 print(checkAndGetCplusType(retType) + " retEnum = ");
3693                         else if (isStructClass(getSimpleArrayType(getGenericType(retType)))) // Struct type
3694                                 print(checkAndGetCplusType(retType) + " retStruct = ");
3695                         else
3696                                 print(checkAndGetCplusType(retType) + " retVal = ");
3697                         writeMethodInputParameters(methParams, methPrmTypes, callbackClasses, methodId);
3698                         checkAndWriteEnumRetTypeCplusSkeleton(retType);
3699                         if (isStructClass(getSimpleArrayType(getGenericType(retType)))) // Struct type
3700                                 writeStructReturnCplusSkeleton(getSimpleArrayType(getGenericType(retType)), retType);
3701                         if (isEnumClass(getSimpleArrayType(getGenericType(retType)))) // Enum type
3702                                 println("void* retObj = &retEnumInt;");
3703                         else
3704                                 if (!isStructClass(getSimpleArrayType(getGenericType(retType)))) // Struct type
3705                                         println("void* retObj = &retVal;");
3706                         String retTypeC = checkAndGetCplusType(retType);
3707                         if (isStructClass(getSimpleArrayType(getGenericType(retType)))) // Struct type
3708                                 println("rmiObj->sendReturnObj(retObj, retCls, numRetObj);");
3709                         else
3710                                 println("rmiObj->sendReturnObj(retObj, \"" + checkAndGetCplusRetClsType(getEnumType(retType)) + "\");");
3711                 }
3712         }
3713
3714
3715         /**
3716          * HELPER: writeStdMethodHelperBodyCplusSkeleton() writes the standard method body helper in the skeleton class
3717          */
3718         private void writeStdMethodHelperBodyCplusSkeleton(InterfaceDecl intDecl, List<String> methParams,
3719                         List<String> methPrmTypes, String method, String methodId, Set<String> callbackClasses) {
3720
3721                 // Generate array of parameter types
3722                 boolean isCallbackMethod = false;
3723                 String callbackType = null;
3724                 print("string paramCls[] = { ");
3725                 for (int i = 0; i < methParams.size(); i++) {
3726                         String paramType = returnGenericCallbackType(methPrmTypes.get(i));
3727                         if (callbackClasses.contains(paramType)) {
3728                                 isCallbackMethod = true;
3729                                 callbackType = paramType;
3730                                 print("\"int\"");
3731                         } else {        // Generate normal classes if it's not a callback object
3732                                 String paramTypeC = checkAndGetCplusArgClsType(methPrmTypes.get(i), methParams.get(i));
3733                                 print("\"" + paramTypeC + "\"");
3734                         }
3735                         if (i != methParams.size() - 1) {
3736                                 print(", ");
3737                         }
3738                 }
3739                 println(" };");
3740                 println("int numParam = " + methParams.size() + ";");
3741                 if (isCallbackMethod)
3742                         writeCallbackCplusNumStubs(methParams, methPrmTypes, callbackType);
3743                 // Generate parameters
3744                 for (int i = 0; i < methParams.size(); i++) {
3745                         String paramType = returnGenericCallbackType(methPrmTypes.get(i));
3746                         if (!callbackClasses.contains(paramType)) {
3747                                 String methParamType = methPrmTypes.get(i);
3748                                 if (isEnumClass(getSimpleArrayType(getGenericType(methParamType)))) {
3749                                 // Check if this is enum type
3750                                         println("vector<int> paramEnumInt" + i + ";");
3751                                 } else {
3752                                         String methPrmType = checkAndGetCplusType(methParamType);
3753                                         String methParamComplete = checkAndGetCplusArray(methPrmType, methParams.get(i));
3754                     println(methParamComplete + ";");
3755                                 }
3756                         }
3757                 }
3758                 // Generate array of parameter objects
3759                 print("void* paramObj[] = { ");
3760                 for (int i = 0; i < methParams.size(); i++) {
3761                         String paramType = returnGenericCallbackType(methPrmTypes.get(i));
3762                         if (callbackClasses.contains(paramType))
3763                                 print("&numStubs" + i);
3764                         else if (isEnumClass(getGenericType(paramType)))        // Check if this is enum type
3765                                 print("&paramEnumInt" + i);
3766                         else
3767                                 print("&" + getSimpleIdentifier(methParams.get(i)));
3768                         if (i != methParams.size() - 1) {
3769                                 print(", ");
3770                         }
3771                 }
3772                 println(" };");
3773                 // Write the return value part
3774                 writeMethodHelperReturnCplusSkeleton(intDecl, methParams, methPrmTypes, method, isCallbackMethod,
3775                         callbackType, methodId, callbackClasses);
3776         }
3777
3778
3779         /**
3780          * HELPER: writeStructMembersCplusSkeleton() writes member parameters of struct
3781          */
3782         private void writeStructMembersCplusSkeleton(String simpleType, String paramType,
3783                         String param, String method, InterfaceDecl intDecl, int iVar) {
3784
3785                 // Get the struct declaration for this struct and generate initialization code
3786                 StructDecl structDecl = getStructDecl(simpleType);
3787                 List<String> memTypes = structDecl.getMemberTypes(simpleType);
3788                 List<String> members = structDecl.getMembers(simpleType);
3789                 int methodNumId = intDecl.getMethodNumId(method);
3790                 String counter = "struct" + methodNumId + "Size" + iVar;
3791                 // Set up variables
3792                 if (isArrayOrList(paramType, param)) {  // An array or list
3793                         for (int i = 0; i < members.size(); i++) {
3794                                 String prmTypeC = checkAndGetCplusType(memTypes.get(i));
3795                                 String prmType = checkAndGetCplusArrayType(prmTypeC, members.get(i));
3796                                 println(getSimpleType(getEnumType(prmType)) + " param" + iVar + i + "[" + counter + "];");
3797                         }
3798                 } else {        // Just one struct element
3799                         for (int i = 0; i < members.size(); i++) {
3800                                 String prmTypeC = checkAndGetCplusType(memTypes.get(i));
3801                                 String prmType = checkAndGetCplusArrayType(prmTypeC, members.get(i));
3802                                 println(getSimpleType(getEnumType(prmType)) + " param" + iVar + i + ";");
3803                         }
3804                 }
3805                 if (isArrayOrList(paramType, param)) {  // An array or list
3806                         println("for(int i = 0; i < " + counter + "; i++) {");
3807                 }
3808                 if (isArrayOrList(paramType, param)) {  // An array or list
3809                         for (int i = 0; i < members.size(); i++) {
3810                                 String prmTypeC = checkAndGetCplusArgClsType(memTypes.get(i), members.get(i));
3811                                 println("paramCls[pos] = \"" + prmTypeC + "\";");
3812                                 println("paramObj[pos++] = &param" + iVar + i + "[i];");
3813                         }
3814                         println("}");
3815                 } else {        // Just one struct element
3816                         for (int i = 0; i < members.size(); i++) {
3817                                 String prmTypeC = checkAndGetCplusArgClsType(memTypes.get(i), members.get(i));
3818                                 println("paramCls[pos] = \"" + prmTypeC + "\";");
3819                                 println("paramObj[pos++] = &param" + iVar + i + ";");
3820                         }
3821                 }
3822         }
3823
3824
3825         /**
3826          * HELPER: writeStructMembersInitCplusSkeleton() writes member parameters initialization of struct
3827          */
3828         private void writeStructMembersInitCplusSkeleton(InterfaceDecl intDecl, List<String> methParams,
3829                         List<String> methPrmTypes, String method) {
3830
3831                 for (int i = 0; i < methParams.size(); i++) {
3832                         String paramType = methPrmTypes.get(i);
3833                         String param = methParams.get(i);
3834                         String simpleType = getGenericType(paramType);
3835                         if (isStructClass(simpleType)) {
3836                                 int methodNumId = intDecl.getMethodNumId(method);
3837                                 String counter = "struct" + methodNumId + "Size" + i;
3838                                 // Declaration
3839                                 if (isArrayOrList(paramType, param)) {  // An array or list
3840                                         println("vector<" + simpleType + "> paramStruct" + i + "(" + counter + ");");
3841                                 } else
3842                                         println(simpleType + " paramStruct" + i + ";");
3843                                 // Initialize members
3844                                 StructDecl structDecl = getStructDecl(simpleType);
3845                                 List<String> members = structDecl.getMembers(simpleType);
3846                                 List<String> memTypes = structDecl.getMemberTypes(simpleType);
3847                                 if (isArrayOrList(paramType, param)) {  // An array or list
3848                                         println("for(int i = 0; i < " + counter + "; i++) {");
3849                                         for (int j = 0; j < members.size(); j++) {
3850                                                 print("paramStruct" + i + "[i]." + getSimpleIdentifier(members.get(j)));
3851                                                 println(" = param" + i + j + "[i];");
3852                                         }
3853                                         println("}");
3854                                 } else {        // Just one struct element
3855                                         for (int j = 0; j < members.size(); j++) {
3856                                                 print("paramStruct" + i + "." + getSimpleIdentifier(members.get(j)));
3857                                                 println(" = param" + i + j + ";");
3858                                         }
3859                                 }
3860                         }
3861                 }
3862         }
3863
3864
3865         /**
3866          * HELPER: writeStructReturnCplusSkeleton() writes parameters of struct for return statement
3867          */
3868         private void writeStructReturnCplusSkeleton(String simpleType, String retType) {
3869
3870                 // Minimum retLen is 1 if this is a single struct object
3871                 if (isArrayOrList(retType, retType))
3872                         println("int retLen = retStruct.size();");
3873                 else    // Just single struct object
3874                         println("int retLen = 1;");
3875                 println("void* retLenObj = &retLen;");
3876                 println("rmiObj->sendReturnObj(retLenObj, \"int\");");
3877                 int numMem = getNumOfMembers(simpleType);
3878                 println("int numRetObj = " + numMem + "*retLen;");
3879                 println("string retCls[numRetObj];");
3880                 println("void* retObj[numRetObj];");
3881                 println("int retPos = 0;");
3882                 // Get the struct declaration for this struct and generate initialization code
3883                 StructDecl structDecl = getStructDecl(simpleType);
3884                 List<String> memTypes = structDecl.getMemberTypes(simpleType);
3885                 List<String> members = structDecl.getMembers(simpleType);
3886                 if (isArrayOrList(retType, retType)) {  // An array or list
3887                         println("for(int i = 0; i < retLen; i++) {");
3888                         for (int i = 0; i < members.size(); i++) {
3889                                 String prmTypeC = checkAndGetCplusArgClsType(memTypes.get(i), members.get(i));
3890                                 println("retCls[retPos] = \"" + prmTypeC + "\";");
3891                                 print("retObj[retPos++] = &retStruct[i].");
3892                                 print(getEnumParam(memTypes.get(i), getSimpleIdentifier(members.get(i)), i));
3893                                 println(";");
3894                         }
3895                         println("}");
3896                 } else {        // Just one struct element
3897                         for (int i = 0; i < members.size(); i++) {
3898                                 String prmTypeC = checkAndGetCplusArgClsType(memTypes.get(i), members.get(i));
3899                                 println("retCls[retPos] = \"" + prmTypeC + "\";");
3900                                 print("retObj[retPos++] = &retStruct.");
3901                                 print(getEnumParam(memTypes.get(i), getSimpleIdentifier(members.get(i)), i));
3902                                 println(";");
3903                         }
3904                 }
3905
3906         }
3907
3908
3909         /**
3910          * HELPER: writeMethodHelperStructCplusSkeleton() writes the struct in skeleton
3911          */
3912         private void writeMethodHelperStructCplusSkeleton(InterfaceDecl intDecl, List<String> methParams,
3913                         List<String> methPrmTypes, String method, String methodId, Set<String> callbackClasses) {
3914
3915                 // Generate array of parameter objects
3916                 boolean isCallbackMethod = false;
3917                 String callbackType = null;
3918                 print("int numParam = ");
3919                 writeLengthStructParamClassSkeleton(methParams, methPrmTypes, method, intDecl);
3920                 println(";");
3921                 println("string paramCls[numParam];");
3922                 println("void* paramObj[numParam];");
3923                 println("int pos = 0;");
3924                 // Iterate again over the parameters
3925                 for (int i = 0; i < methParams.size(); i++) {
3926                         String paramType = methPrmTypes.get(i);
3927                         String param = methParams.get(i);
3928                         String simpleType = getGenericType(paramType);
3929                         if (isStructClass(simpleType)) {
3930                                 writeStructMembersCplusSkeleton(simpleType, paramType, param, method, intDecl, i);
3931                         } else {
3932                                 String prmType = returnGenericCallbackType(methPrmTypes.get(i));
3933                                 if (callbackClasses.contains(prmType)) {
3934                                         isCallbackMethod = true;
3935                                         callbackType = prmType;
3936                                         println("int numStubs" + i + " = 0;");
3937                                         println("paramCls[pos] = \"int\";");
3938                                         println("paramObj[pos++] = &numStubs" + i + ";");
3939                                 } else {        // Generate normal classes if it's not a callback object
3940                                         String paramTypeC = checkAndGetCplusType(methPrmTypes.get(i));
3941                                         if (isEnumClass(getGenericType(paramTypeC))) {  // Check if this is enum type
3942                                                 println("vector<int> paramEnumInt" + i + ";");
3943                                         } else {
3944                                                 String methParamComplete = checkAndGetCplusArray(paramTypeC, methParams.get(i));
3945                                                 println(methParamComplete + ";");
3946                                         }
3947                                         String prmTypeC = checkAndGetCplusArgClsType(methPrmTypes.get(i), methParams.get(i));
3948                                         println("paramCls[pos] = \"" + prmTypeC + "\";");
3949                                         if (isEnumClass(getGenericType(paramType)))     // Check if this is enum type
3950                                                 println("paramObj[pos++] = &paramEnumInt" + i + ";");
3951                                         else
3952                                                 println("paramObj[pos++] = &" + getSimpleIdentifier(methParams.get(i)) + ";");
3953                                 }
3954                         }
3955                 }
3956                 // Write the return value part
3957                 writeMethodHelperReturnCplusSkeleton(intDecl, methParams, methPrmTypes, method, isCallbackMethod,
3958                         callbackType, methodId, callbackClasses);
3959         }
3960
3961
3962         /**
3963          * HELPER: writeMethodHelperCplusSkeleton() writes the method helper of the skeleton class
3964          */
3965         private void writeMethodHelperCplusSkeleton(Collection<String> methods, InterfaceDecl intDecl, Set<String> callbackClasses) {
3966
3967                 // Use this set to handle two same methodIds
3968                 Set<String> uniqueMethodIds = new HashSet<String>();
3969                 for (String method : methods) {
3970
3971                         List<String> methParams = intDecl.getMethodParams(method);
3972                         List<String> methPrmTypes = intDecl.getMethodParamTypes(method);
3973                         if (isStructPresent(methParams, methPrmTypes)) {        // Treat struct differently
3974                                 String methodId = intDecl.getMethodId(method);
3975                                 print("void ___");
3976                                 String helperMethod = methodId;
3977                                 if (uniqueMethodIds.contains(methodId))
3978                                         helperMethod = helperMethod + intDecl.getMethodNumId(method);
3979                                 else
3980                                         uniqueMethodIds.add(methodId);
3981                                 String retType = intDecl.getMethodType(method);
3982                                 print(helperMethod + "(");
3983                                 boolean begin = true;
3984                                 for (int i = 0; i < methParams.size(); i++) { // Print size variables
3985                                         String paramType = methPrmTypes.get(i);
3986                                         String param = methParams.get(i);
3987                                         String simpleType = getGenericType(paramType);
3988                                         if (isStructClass(simpleType)) {
3989                                                 if (!begin)     // Generate comma for not the beginning variable
3990                                                         print(", ");
3991                                                 else
3992                                                         begin = false;
3993                                                 int methodNumId = intDecl.getMethodNumId(method);
3994                                                 print("int struct" + methodNumId + "Size" + i);
3995                                         }
3996                                 }
3997                                 println(") {");
3998                                 writeMethodHelperStructCplusSkeleton(intDecl, methParams, methPrmTypes, method, methodId, callbackClasses);
3999                                 println("}\n");
4000                         } else {
4001                                 String methodId = intDecl.getMethodId(method);
4002                                 print("void ___");
4003                                 String helperMethod = methodId;
4004                                 if (uniqueMethodIds.contains(methodId))
4005                                         helperMethod = helperMethod + intDecl.getMethodNumId(method);
4006                                 else
4007                                         uniqueMethodIds.add(methodId);
4008                                 // Check if this is "void"
4009                                 String retType = intDecl.getMethodType(method);
4010                                 println(helperMethod + "() {");
4011                                 // Now, write the helper body of skeleton!
4012                                 writeStdMethodHelperBodyCplusSkeleton(intDecl, methParams, methPrmTypes, method, methodId, callbackClasses);
4013                                 println("}\n");
4014                         }
4015                 }
4016                 // Write method helper for structs
4017                 writeMethodHelperStructSetupCplusSkeleton(methods, intDecl);
4018         }
4019
4020
4021         /**
4022          * HELPER: writeMethodHelperStructSetupCplusSkeleton() writes the method helper of struct in skeleton class
4023          */
4024         private void writeMethodHelperStructSetupCplusSkeleton(Collection<String> methods,
4025                         InterfaceDecl intDecl) {
4026
4027                 // Use this set to handle two same methodIds
4028                 for (String method : methods) {
4029
4030                         List<String> methParams = intDecl.getMethodParams(method);
4031                         List<String> methPrmTypes = intDecl.getMethodParamTypes(method);
4032                         // Check for params with structs
4033                         for (int i = 0; i < methParams.size(); i++) {
4034                                 String paramType = methPrmTypes.get(i);
4035                                 String param = methParams.get(i);
4036                                 String simpleType = getGenericType(paramType);
4037                                 if (isStructClass(simpleType)) {
4038                                         int methodNumId = intDecl.getMethodNumId(method);
4039                                         print("int ___");
4040                                         String helperMethod = methodNumId + "struct" + i;
4041                                         println(helperMethod + "() {");
4042                                         // Now, write the helper body of skeleton!
4043                                         println("string paramCls[] = { \"int\" };");
4044                                         println("int numParam = 1;");
4045                                         println("int param0 = 0;");
4046                                         println("void* paramObj[] = { &param0 };");
4047                                         println("rmiObj->getMethodParams(paramCls, numParam, paramObj);");
4048                                         println("return param0;");
4049                                         println("}\n");
4050                                 }
4051                         }
4052                 }
4053         }
4054
4055
4056         /**
4057          * HELPER: writeMethodHelperStructSetupCplusCallbackSkeleton() writes the method helper of struct in skeleton class
4058          */
4059         private void writeMethodHelperStructSetupCplusCallbackSkeleton(Collection<String> methods,
4060                         InterfaceDecl intDecl) {
4061
4062                 // Use this set to handle two same methodIds
4063                 for (String method : methods) {
4064
4065                         List<String> methParams = intDecl.getMethodParams(method);
4066                         List<String> methPrmTypes = intDecl.getMethodParamTypes(method);
4067                         // Check for params with structs
4068                         for (int i = 0; i < methParams.size(); i++) {
4069                                 String paramType = methPrmTypes.get(i);
4070                                 String param = methParams.get(i);
4071                                 String simpleType = getGenericType(paramType);
4072                                 if (isStructClass(simpleType)) {
4073                                         int methodNumId = intDecl.getMethodNumId(method);
4074                                         print("int ___");
4075                                         String helperMethod = methodNumId + "struct" + i;
4076                                         println(helperMethod + "(IoTRMIObject* rmiObj) {");
4077                                         // Now, write the helper body of skeleton!
4078                                         println("string paramCls[] = { \"int\" };");
4079                                         println("int numParam = 1;");
4080                                         println("int param0 = 0;");
4081                                         println("void* paramObj[] = { &param0 };");
4082                                         println("rmiObj->getMethodParams(paramCls, numParam, paramObj);");
4083                                         println("return param0;");
4084                                         println("}\n");
4085                                 }
4086                         }
4087                 }
4088         }
4089
4090
4091         /**
4092          * HELPER: writeCplusMethodPermission() writes permission checks in skeleton
4093          */
4094         private void writeCplusMethodPermission(String intface) {
4095
4096                 // Get all the different stubs
4097                 Map<String,Set<String>> mapNewIntMethods = mapInt2NewInts.get(intface);
4098                 for (Map.Entry<String,Set<String>> intMeth : mapNewIntMethods.entrySet()) {
4099                         String newIntface = intMeth.getKey();
4100                         int newObjectId = getNewIntfaceObjectId(newIntface);
4101                         println("if (_objectId == object" + newObjectId + "Id) {");
4102                         println("if (set" + newObjectId + "Allowed.find(methodId) == set" + newObjectId + "Allowed.end()) {");
4103                         println("cerr << \"Object with object Id: \" << _objectId << \"  is not allowed to access method: \" << methodId << endl;");
4104                         println("return;");
4105                         println("}");
4106                         println("}");
4107                         println("else {");
4108                         println("cerr << \"Object Id: \" << _objectId << \" not recognized!\" << endl;");
4109                         println("return;");
4110                         println("}");
4111                 }
4112         }
4113
4114
4115         /**
4116          * HELPER: writeCplusWaitRequestInvokeMethod() writes the main loop of the skeleton class
4117          */
4118         private void writeCplusWaitRequestInvokeMethod(Collection<String> methods, InterfaceDecl intDecl, boolean callbackExist, String intface) {
4119
4120                 // Use this set to handle two same methodIds
4121                 Set<String> uniqueMethodIds = new HashSet<String>();
4122                 println("void ___waitRequestInvokeMethod() {");
4123                 // Write variables here if we have callbacks or enums or structs
4124                 writeCountVarStructSkeleton(methods, intDecl);
4125                 println("while (true) {");
4126                 println("rmiObj->getMethodBytes();");
4127                 println("int _objectId = rmiObj->getObjectId();");
4128                 println("int methodId = rmiObj->getMethodId();");
4129                 // Generate permission check
4130                 writeCplusMethodPermission(intface);
4131                 println("switch (methodId) {");
4132                 // Print methods and method Ids
4133                 for (String method : methods) {
4134                         String methodId = intDecl.getMethodId(method);
4135                         int methodNumId = intDecl.getMethodNumId(method);
4136                         print("case " + methodNumId + ": ___");
4137                         String helperMethod = methodId;
4138                         if (uniqueMethodIds.contains(methodId))
4139                                 helperMethod = helperMethod + methodNumId;
4140                         else
4141                                 uniqueMethodIds.add(methodId);
4142                         print(helperMethod + "(");
4143                         writeInputCountVarStructSkeleton(method, intDecl);
4144                         println("); break;");
4145                 }
4146                 String method = "___initCallBack()";
4147                 // Print case -9999 (callback handler) if callback exists
4148                 if (callbackExist) {
4149                         int methodId = intDecl.getHelperMethodNumId(method);
4150                         println("case " + methodId + ": ___regCB(); break;");
4151                 }
4152                 writeMethodCallStructSkeleton(methods, intDecl);
4153                 println("default: ");
4154                 println("cerr << \"Method Id \" << methodId << \" not recognized!\" << endl;");
4155                 println("throw exception();");
4156                 println("}");
4157                 println("}");
4158                 println("}\n");
4159         }
4160
4161
4162         /**
4163          * generateCplusSkeletonClass() generate skeletons based on the methods list in C++
4164          */
4165         public void generateCplusSkeletonClass() throws IOException {
4166
4167                 // Create a new directory
4168                 String path = createDirectories(dir, subdir);
4169                 for (String intface : mapIntfacePTH.keySet()) {
4170                         // Open a new file to write into
4171                         String newSkelClass = intface + "_Skeleton";
4172                         FileWriter fw = new FileWriter(path + "/" + newSkelClass + ".hpp");
4173                         pw = new PrintWriter(new BufferedWriter(fw));
4174                         // Write file headers
4175                         println("#ifndef _" + newSkelClass.toUpperCase() + "_HPP__");
4176                         println("#define _" + newSkelClass.toUpperCase() + "_HPP__");
4177                         println("#include <iostream>");
4178                         println("#include \"" + intface + ".hpp\"\n");
4179                         // Pass in set of methods and get import classes
4180                         DeclarationHandler decHandler = mapIntDeclHand.get(intface);
4181                         InterfaceDecl intDecl = (InterfaceDecl) decHandler.getInterfaceDecl(intface);
4182                         List<String> methods = intDecl.getMethods();
4183                         Set<String> includeClasses = getIncludeClasses(methods, intDecl, intface, true);
4184                         List<String> stdIncludeClasses = getStandardCplusIncludeClasses();
4185                         List<String> allIncludeClasses = getAllLibClasses(stdIncludeClasses, includeClasses);
4186                         printIncludeStatements(allIncludeClasses); println("");
4187                         println("using namespace std;\n");
4188                         // Find out if there are callback objects
4189                         Set<String> callbackClasses = getCallbackClasses(methods, intDecl);
4190                         boolean callbackExist = !callbackClasses.isEmpty();
4191                         // Write class header
4192                         println("class " + newSkelClass + " : public " + intface); println("{");
4193                         println("private:\n");
4194                         // Write properties
4195                         writePropertiesCplusSkeleton(intface, callbackExist, callbackClasses);
4196                         println("public:\n");
4197                         // Write constructor
4198                         writeConstructorCplusSkeleton(newSkelClass, intface, callbackExist, intDecl, methods);
4199                         // Write deconstructor
4200                         writeDeconstructorCplusSkeleton(newSkelClass, callbackExist, callbackClasses);
4201                         // Write methods
4202                         writeMethodCplusSkeleton(methods, intDecl, callbackClasses, false);
4203                         // Write method helper
4204                         writeMethodHelperCplusSkeleton(methods, intDecl, callbackClasses);
4205                         // Write waitRequestInvokeMethod() - main loop
4206                         writeCplusWaitRequestInvokeMethod(methods, intDecl, callbackExist, intface);
4207                         println("};");
4208                         writePermissionInitializationCplus(intface, newSkelClass, intDecl);
4209                         writeObjectIdCountInitializationCplus(newSkelClass, callbackExist);
4210                         println("#endif");
4211                         pw.close();
4212                         System.out.println("IoTCompiler: Generated skeleton class " + newSkelClass + ".hpp...");
4213                 }
4214         }
4215
4216
4217         /**
4218          * HELPER: writePropertiesCplusCallbackSkeleton() writes the properties of the callback skeleton class
4219          */
4220         private void writePropertiesCplusCallbackSkeleton(String intface, boolean callbackExist, Set<String> callbackClasses) {
4221
4222                 println(intface + " *mainObj;");
4223                 // Keep track of object Ids of all stubs registered to this interface
4224                 println("int objectId;");
4225                 // Callback
4226                 if (callbackExist) {
4227                         Iterator it = callbackClasses.iterator();
4228                         String callbackType = (String) it.next();
4229                         String exchangeType = checkAndGetParamClass(callbackType);
4230                         println("// Callback properties");
4231                         println("IoTRMICall* rmiCall;");
4232                         println("vector<" + exchangeType + "*> vecCallbackObj;");
4233                         println("static int objIdCnt;");
4234                 }
4235                 println("\n");
4236         }
4237
4238
4239         /**
4240          * HELPER: writeConstructorCplusCallbackSkeleton() writes the constructor of the skeleton class
4241          */
4242         private void writeConstructorCplusCallbackSkeleton(String newSkelClass, String intface, boolean callbackExist, InterfaceDecl intDecl, Collection<String> methods) {
4243
4244                 println(newSkelClass + "(" + intface + " *_mainObj, int _objectId) {");
4245                 println("mainObj = _mainObj;");
4246                 println("objectId = _objectId;");
4247                 println("}\n");
4248         }
4249
4250
4251         /**
4252          * HELPER: writeDeconstructorCplusStub() writes the deconstructor of the stub class
4253          */
4254         private void writeDeconstructorCplusCallbackSkeleton(String newStubClass, boolean callbackExist,
4255                         Set<String> callbackClasses) {
4256
4257                 println("~" + newStubClass + "() {");
4258                 if (callbackExist) {
4259                 // We assume that each class only has one callback interface for now
4260                         println("if (rmiCall != NULL) {");
4261                         println("delete rmiCall;");
4262                         println("rmiCall = NULL;");
4263                         println("}");
4264                         Iterator it = callbackClasses.iterator();
4265                         String callbackType = (String) it.next();
4266                         String exchangeType = checkAndGetParamClass(callbackType);
4267                         println("for(" + exchangeType + "* cb : vecCallbackObj) {");
4268                         println("delete cb;");
4269                         println("cb = NULL;");
4270                         println("}");
4271                 }
4272                 println("}");
4273                 println("");
4274         }
4275
4276
4277         /**
4278          * HELPER: writeMethodHelperCplusCallbackSkeleton() writes the method helper of callback skeleton class
4279          */
4280         private void writeMethodHelperCplusCallbackSkeleton(Collection<String> methods, InterfaceDecl intDecl,
4281                         Set<String> callbackClasses) {
4282
4283                 // Use this set to handle two same methodIds
4284                 Set<String> uniqueMethodIds = new HashSet<String>();
4285                 for (String method : methods) {
4286
4287                         List<String> methParams = intDecl.getMethodParams(method);
4288                         List<String> methPrmTypes = intDecl.getMethodParamTypes(method);
4289                         if (isStructPresent(methParams, methPrmTypes)) {        // Treat struct differently
4290                                 String methodId = intDecl.getMethodId(method);
4291                                 print("void ___");
4292                                 String helperMethod = methodId;
4293                                 if (uniqueMethodIds.contains(methodId))
4294                                         helperMethod = helperMethod + intDecl.getMethodNumId(method);
4295                                 else
4296                                         uniqueMethodIds.add(methodId);
4297                                 String retType = intDecl.getMethodType(method);
4298                                 print(helperMethod + "(");
4299                                 boolean begin = true;
4300                                 for (int i = 0; i < methParams.size(); i++) { // Print size variables
4301                                         String paramType = methPrmTypes.get(i);
4302                                         String param = methParams.get(i);
4303                                         String simpleType = getGenericType(paramType);
4304                                         if (isStructClass(simpleType)) {
4305                                                 if (!begin)     // Generate comma for not the beginning variable
4306                                                         print(", ");
4307                                                 else
4308                                                         begin = false;
4309                                                 int methodNumId = intDecl.getMethodNumId(method);
4310                                                 print("int struct" + methodNumId + "Size" + i);
4311                                         }
4312                                 }
4313                                 println(", IoTRMIObject* rmiObj) {");
4314                                 writeMethodHelperStructCplusSkeleton(intDecl, methParams, methPrmTypes, method, methodId, callbackClasses);
4315                                 println("}\n");
4316                         } else {
4317                                 String methodId = intDecl.getMethodId(method);
4318                                 print("void ___");
4319                                 String helperMethod = methodId;
4320                                 if (uniqueMethodIds.contains(methodId))
4321                                         helperMethod = helperMethod + intDecl.getMethodNumId(method);
4322                                 else
4323                                         uniqueMethodIds.add(methodId);
4324                                 // Check if this is "void"
4325                                 String retType = intDecl.getMethodType(method);
4326                                 println(helperMethod + "(IoTRMIObject* rmiObj) {");
4327                                 // Now, write the helper body of skeleton!
4328                                 writeStdMethodHelperBodyCplusSkeleton(intDecl, methParams, methPrmTypes, method, methodId, callbackClasses);
4329                                 println("}\n");
4330                         }
4331                 }
4332                 // Write method helper for structs
4333                 writeMethodHelperStructSetupCplusCallbackSkeleton(methods, intDecl);
4334         }
4335
4336
4337         /**
4338          * HELPER: writeCplusCallbackWaitRequestInvokeMethod() writes the request invoke method of the skeleton callback class
4339          */
4340         private void writeCplusCallbackWaitRequestInvokeMethod(Collection<String> methods, InterfaceDecl intDecl,
4341                         boolean callbackExist) {
4342
4343                 // Use this set to handle two same methodIds
4344                 Set<String> uniqueMethodIds = new HashSet<String>();
4345                 println("void invokeMethod(IoTRMIObject* rmiObj) {");
4346                 // Write variables here if we have callbacks or enums or structs
4347                 writeCountVarStructSkeleton(methods, intDecl);
4348                 // Write variables here if we have callbacks or enums or structs
4349                 println("int methodId = rmiObj->getMethodId();");
4350                 // TODO: code the permission check here!
4351                 println("switch (methodId) {");
4352                 // Print methods and method Ids
4353                 for (String method : methods) {
4354                         String methodId = intDecl.getMethodId(method);
4355                         int methodNumId = intDecl.getMethodNumId(method);
4356                         print("case " + methodNumId + ": ___");
4357                         String helperMethod = methodId;
4358                         if (uniqueMethodIds.contains(methodId))
4359                                 helperMethod = helperMethod + methodNumId;
4360                         else
4361                                 uniqueMethodIds.add(methodId);
4362                         print(helperMethod + "(");
4363                         if (writeInputCountVarStructSkeleton(method, intDecl))
4364                                 println(", rmiObj); break;");
4365                         else
4366                                 println("rmiObj); break;");
4367                 }
4368                 String method = "___initCallBack()";
4369                 // Print case -9999 (callback handler) if callback exists
4370                 if (callbackExist) {
4371                         int methodId = intDecl.getHelperMethodNumId(method);
4372                         println("case " + methodId + ": ___regCB(rmiObj); break;");
4373                 }
4374                 writeMethodCallStructCallbackSkeleton(methods, intDecl);
4375                 println("default: ");
4376                 println("cerr << \"Method Id \" << methodId << \" not recognized!\" << endl;");
4377                 println("throw exception();");
4378                 println("}");
4379                 println("}\n");
4380         }
4381
4382
4383         /**
4384          * generateCplusCallbackSkeletonClass() generate callback skeletons based on the methods list in C++
4385          */
4386         public void generateCplusCallbackSkeletonClass() throws IOException {
4387
4388                 // Create a new directory
4389                 String path = createDirectories(dir, subdir);
4390                 for (String intface : mapIntfacePTH.keySet()) {
4391                         // Open a new file to write into
4392                         String newSkelClass = intface + "_CallbackSkeleton";
4393                         FileWriter fw = new FileWriter(path + "/" + newSkelClass + ".hpp");
4394                         pw = new PrintWriter(new BufferedWriter(fw));
4395                         // Write file headers
4396                         println("#ifndef _" + newSkelClass.toUpperCase() + "_HPP__");
4397                         println("#define _" + newSkelClass.toUpperCase() + "_HPP__");
4398                         println("#include <iostream>");
4399                         println("#include \"" + intface + ".hpp\"\n");
4400                         // Pass in set of methods and get import classes
4401                         DeclarationHandler decHandler = mapIntDeclHand.get(intface);
4402                         InterfaceDecl intDecl = (InterfaceDecl) decHandler.getInterfaceDecl(intface);
4403                         List<String> methods = intDecl.getMethods();
4404                         Set<String> includeClasses = getIncludeClasses(methods, intDecl, intface, true);
4405                         List<String> stdIncludeClasses = getStandardCplusIncludeClasses();
4406                         List<String> allIncludeClasses = getAllLibClasses(stdIncludeClasses, includeClasses);
4407                         printIncludeStatements(allIncludeClasses); println("");
4408                         // Find out if there are callback objects
4409                         Set<String> callbackClasses = getCallbackClasses(methods, intDecl);
4410                         boolean callbackExist = !callbackClasses.isEmpty();
4411                         println("using namespace std;\n");
4412                         // Write class header
4413                         println("class " + newSkelClass + " : public " + intface); println("{");
4414                         println("private:\n");
4415                         // Write properties
4416                         writePropertiesCplusCallbackSkeleton(intface, callbackExist, callbackClasses);
4417                         println("public:\n");
4418                         // Write constructor
4419                         writeConstructorCplusCallbackSkeleton(newSkelClass, intface, callbackExist, intDecl, methods);
4420                         // Write deconstructor
4421                         writeDeconstructorCplusCallbackSkeleton(newSkelClass, callbackExist, callbackClasses);
4422                         // Write methods
4423                         writeMethodCplusSkeleton(methods, intDecl, callbackClasses, true);
4424                         // Write method helper
4425                         writeMethodHelperCplusCallbackSkeleton(methods, intDecl, callbackClasses);
4426                         // Write waitRequestInvokeMethod() - main loop
4427                         writeCplusCallbackWaitRequestInvokeMethod(methods, intDecl, callbackExist);
4428                         println("};");
4429                         writeObjectIdCountInitializationCplus(newSkelClass, callbackExist);
4430                         println("#endif");
4431                         pw.close();
4432                         System.out.println("IoTCompiler: Generated callback skeleton class " + newSkelClass + ".hpp...");
4433                 }
4434         }
4435
4436
4437         /**
4438          * generateInitializer() generate initializer based on type
4439          */
4440         public String generateCplusInitializer(String type) {
4441
4442                 // Generate dummy returns for now
4443                 if (type.equals("short")||
4444                         type.equals("int")      ||
4445                         type.equals("long") ||
4446                         type.equals("float")||
4447                         type.equals("double")) {
4448
4449                         return "0";
4450                 } else if ( type.equals("String") ||
4451                                         type.equals("string")) {
4452
4453                         return "\"\"";
4454                 } else if ( type.equals("char") ||
4455                                         type.equals("byte")) {
4456
4457                         return "\' \'";
4458                 } else if ( type.equals("boolean")) {
4459
4460                         return "false";
4461                 } else {
4462                         return "NULL";
4463                 }
4464         }
4465
4466
4467         /**
4468          * setDirectory() sets a new directory for stub files
4469          */
4470         public void setDirectory(String _subdir) {
4471
4472                 subdir = _subdir;
4473         }
4474
4475
4476         /**
4477          * printUsage() prints the usage of this compiler
4478          */
4479         public static void printUsage() {
4480
4481                 System.out.println();
4482                 System.out.println("Sentinel interface and stub compiler version 1.0");
4483                 System.out.println("Copyright (c) 2015-2016 University of California, Irvine - Programming Language Group.");
4484                 System.out.println("All rights reserved.");
4485                 System.out.println("Usage:");
4486                 System.out.println("\tjava IoTCompiler -help / --help / -h\n");
4487                 System.out.println("\t\tDisplay this help texts\n\n");
4488                 System.out.println("\tjava IoTCompiler [<main-policy-file> <req-policy-file>]");
4489                 System.out.println("\tjava IoTCompiler [<main-policy-file> <req-policy-file>] [options]\n");
4490                 System.out.println("\t\tTake one or more pairs of main-req policy files, and generate Java and/or C++ files\n");
4491                 System.out.println("Options:");
4492                 System.out.println("\t-java\t<directory>\tGenerate Java stub files");
4493                 System.out.println("\t-cplus\t<directory>\tGenerate C++ stub files");
4494                 System.out.println();
4495         }
4496
4497
4498         /**
4499          * parseFile() prepares Lexer and Parser objects, then parses the file
4500          */
4501         public static ParseNode parseFile(String file) {
4502
4503                 ParseNode pn = null;
4504                 try {
4505                         ComplexSymbolFactory csf = new ComplexSymbolFactory();
4506                         ScannerBuffer lexer =
4507                                 new ScannerBuffer(new Lexer(new BufferedReader(new FileReader(file)),csf));
4508                         Parser parse = new Parser(lexer,csf);
4509                         pn = (ParseNode) parse.parse().value;
4510                 } catch (Exception e) {
4511                         e.printStackTrace();
4512                         throw new Error("IoTCompiler: ERROR parsing policy file or wrong command line option: " + file + "\n");
4513                 }
4514
4515                 return pn;
4516         }
4517
4518
4519         /**================
4520          * Basic helper functions
4521          **================
4522          */
4523         boolean newline=true;
4524         int tablevel=0;
4525
4526         private void print(String str) {
4527                 if (newline) {
4528                         int tab=tablevel;
4529                         if (str.equals("}"))
4530                                 tab--;
4531                         for(int i=0; i<tab; i++)
4532                                 pw.print("\t");
4533                 }
4534                 pw.print(str);
4535                 updatetabbing(str);
4536                 newline=false;
4537         }
4538
4539
4540         /**
4541          * This function converts Java to C++ type for compilation
4542          */
4543         private String convertType(String type) {
4544
4545                 if (mapPrimitives.containsKey(type))
4546                         return mapPrimitives.get(type);
4547                 else
4548                         return type;
4549         }
4550
4551
4552         /**
4553          * A collection of methods with print-to-file functionality
4554          */
4555         private void println(String str) {
4556                 if (newline) {
4557                         int tab = tablevel;
4558                         if (str.contains("}") && !str.contains("{"))
4559                                 tab--;
4560                         for(int i=0; i<tab; i++)
4561                                 pw.print("\t");
4562                 }
4563                 pw.println(str);
4564                 updatetabbing(str);
4565                 newline = true;
4566         }
4567
4568
4569         private void updatetabbing(String str) {
4570
4571                 tablevel+=count(str,'{')-count(str,'}');
4572         }
4573
4574
4575         private int count(String str, char key) {
4576                 char[] array = str.toCharArray();
4577                 int count = 0;
4578                 for(int i=0; i<array.length; i++) {
4579                         if (array[i] == key)
4580                                 count++;
4581                 }
4582                 return count;
4583         }
4584
4585
4586         private void createDirectory(String dirName) {
4587
4588                 File file = new File(dirName);
4589                 if (!file.exists()) {
4590                         if (file.mkdir()) {
4591                                 System.out.println("IoTCompiler: Directory " + dirName + " has been created!");
4592                         } else {
4593                                 System.out.println("IoTCompiler: Failed to create directory " + dirName + "!");
4594                         }
4595                 } else {
4596                         System.out.println("IoTCompiler: Directory " + dirName + " exists...");
4597                 }
4598         }
4599
4600
4601         // Create a directory and possibly a sub directory
4602         private String createDirectories(String dir, String subdir) {
4603
4604                 String path = dir;
4605                 createDirectory(path);
4606                 if (subdir != null) {
4607                         path = path + "/" + subdir;
4608                         createDirectory(path);
4609                 }
4610                 return path;
4611         }
4612
4613
4614         // Inserting array members into a Map object
4615         // that maps arrKey to arrVal objects
4616         private void arraysToMap(Map map, Object[] arrKey, Object[] arrVal) {
4617
4618                 for(int i = 0; i < arrKey.length; i++) {
4619
4620                         map.put(arrKey[i], arrVal[i]);
4621                 }
4622         }
4623
4624
4625         // Check and find object Id for new interface in mapNewIntfaceObjId (callbacks)
4626         // Throw an error if the new interface is not found!
4627         // Basically the compiler needs to parse the policy (and requires) files for callback class first
4628         private int getNewIntfaceObjectId(String newIntface) {
4629
4630                 if (!mapNewIntfaceObjId.containsKey(newIntface)) {
4631                         throw new Error("IoTCompiler: Need to parse policy and requires files for callback class first! " +
4632                                                         "Please place the two files for callback class in front...\n");
4633                 } else {
4634                         int retObjId = mapNewIntfaceObjId.get(newIntface);
4635                         return retObjId;
4636                 }
4637         }
4638
4639
4640         // Return parameter category, i.e. PRIMITIVES, NONPRIMITIVES, USERDEFINED, ENUM, or STRUCT
4641         private ParamCategory getParamCategory(String paramType) {
4642
4643                 if (mapPrimitives.containsKey(paramType)) {
4644                         return ParamCategory.PRIMITIVES;
4645                 // We can either use mapNonPrimitivesJava or mapNonPrimitivesCplus here
4646                 } else if (mapNonPrimitivesJava.containsKey(getSimpleType(paramType))) {
4647                         return ParamCategory.NONPRIMITIVES;
4648                 } else if (isEnumClass(paramType)) {
4649                         return ParamCategory.ENUM;
4650                 } else if (isStructClass(paramType)) {
4651                         return ParamCategory.STRUCT;
4652                 } else
4653                         return ParamCategory.USERDEFINED;
4654         }
4655
4656
4657         // Return full class name for non-primitives to generate Java import statements
4658         // e.g. java.util.Set for Set
4659         private String getNonPrimitiveJavaClass(String paramNonPrimitives) {
4660
4661                 return mapNonPrimitivesJava.get(paramNonPrimitives);
4662         }
4663
4664
4665         // Return full class name for non-primitives to generate Cplus include statements
4666         // e.g. #include <set> for Set
4667         private String getNonPrimitiveCplusClass(String paramNonPrimitives) {
4668
4669                 return mapNonPrimitivesCplus.get(paramNonPrimitives);
4670         }
4671
4672
4673         // Get simple types, e.g. HashSet for HashSet<...>
4674         // Basically strip off the "<...>"
4675         private String getSimpleType(String paramType) {
4676
4677                 // Check if this is generics
4678                 if(paramType.contains("<")) {
4679                         String[] type = paramType.split("<");
4680                         return type[0];
4681                 } else
4682                         return paramType;
4683         }
4684
4685
4686         // Generate a set of standard classes for import statements
4687         private List<String> getStandardJavaIntfaceImportClasses() {
4688
4689                 List<String> importClasses = new ArrayList<String>();
4690                 // Add the standard list first
4691                 importClasses.add("java.util.List");
4692                 importClasses.add("java.util.ArrayList");
4693
4694                 return importClasses;
4695         }
4696
4697
4698         // Generate a set of standard classes for import statements
4699         private List<String> getStandardJavaImportClasses() {
4700
4701                 List<String> importClasses = new ArrayList<String>();
4702                 // Add the standard list first
4703                 importClasses.add("java.io.IOException");
4704                 importClasses.add("java.util.List");
4705                 importClasses.add("java.util.ArrayList");
4706                 importClasses.add("java.util.Arrays");
4707                 importClasses.add("iotrmi.Java.IoTRMICall");
4708                 importClasses.add("iotrmi.Java.IoTRMIObject");
4709
4710                 return importClasses;
4711         }
4712
4713
4714         // Generate a set of standard classes for import statements
4715         private List<String> getStandardCplusIncludeClasses() {
4716
4717                 List<String> importClasses = new ArrayList<String>();
4718                 // Add the standard list first
4719                 importClasses.add("<vector>");
4720                 importClasses.add("<set>");
4721                 importClasses.add("\"IoTRMICall.hpp\"");
4722                 importClasses.add("\"IoTRMIObject.hpp\"");
4723
4724                 return importClasses;
4725         }
4726
4727
4728         // Combine all classes for import statements
4729         private List<String> getAllLibClasses(Collection<String> stdLibClasses, Collection<String> libClasses) {
4730
4731                 List<String> allLibClasses = new ArrayList<String>(stdLibClasses);
4732                 // Iterate over the list of import classes
4733                 for (String str : libClasses) {
4734                         if (!allLibClasses.contains(str)) {
4735                                 allLibClasses.add(str);
4736                         }
4737                 }
4738                 return allLibClasses;
4739         }
4740
4741
4742
4743         // Generate a set of classes for import statements
4744         private Set<String> getImportClasses(Collection<String> methods, InterfaceDecl intDecl) {
4745
4746                 Set<String> importClasses = new HashSet<String>();
4747                 for (String method : methods) {
4748                         List<String> methPrmTypes = intDecl.getMethodParamTypes(method);
4749                         for (String paramType : methPrmTypes) {
4750
4751                                 String simpleType = getSimpleType(paramType);
4752                                 if (getParamCategory(simpleType) == ParamCategory.NONPRIMITIVES) {
4753                                         importClasses.add(getNonPrimitiveJavaClass(simpleType));
4754                                 }
4755                         }
4756                 }
4757                 return importClasses;
4758         }
4759
4760
4761         // Handle and return the correct enum declaration
4762         // In Java, if we declare enum in Camera interface, then it becomes "Camera.<enum>"
4763         private String getEnumParamDecl(String type, InterfaceDecl intDecl) {
4764
4765                 // Strips off array "[]" for return type
4766                 String pureType = getSimpleArrayType(type);
4767                 // Take the inner type of generic
4768                 if (getParamCategory(type) == ParamCategory.NONPRIMITIVES)
4769                         pureType = getTypeOfGeneric(type)[0];
4770                 if (isEnumClass(pureType)) {
4771                         String enumType = intDecl.getInterface() + "." + type;
4772                         return enumType;
4773                 } else
4774                         return type;
4775         }
4776
4777
4778         // Handle and return the correct type
4779         private String getEnumParam(String type, String param, int i) {
4780
4781                 // Strips off array "[]" for return type
4782                 String pureType = getSimpleArrayType(type);
4783                 // Take the inner type of generic
4784                 if (getParamCategory(type) == ParamCategory.NONPRIMITIVES)
4785                         pureType = getTypeOfGeneric(type)[0];
4786                 if (isEnumClass(pureType)) {
4787                         String enumParam = "paramEnum" + i;
4788                         return enumParam;
4789                 } else
4790                         return param;
4791         }
4792
4793
4794         // Handle and return the correct enum declaration translate into int[]
4795         private String getEnumType(String type) {
4796
4797                 // Strips off array "[]" for return type
4798                 String pureType = getSimpleArrayType(type);
4799                 // Take the inner type of generic
4800                 if (getParamCategory(type) == ParamCategory.NONPRIMITIVES)
4801                         pureType = getGenericType(type);
4802                 if (isEnumClass(pureType)) {
4803                         String enumType = "int[]";
4804                         return enumType;
4805                 } else
4806                         return type;
4807         }
4808
4809         // Handle and return the correct enum declaration translate into int* for C
4810         private String getEnumCplusClsType(String type) {
4811
4812                 // Strips off array "[]" for return type
4813                 String pureType = getSimpleArrayType(type);
4814                 // Take the inner type of generic
4815                 if (getParamCategory(type) == ParamCategory.NONPRIMITIVES)
4816                         pureType = getGenericType(type);
4817                 if (isEnumClass(pureType)) {
4818                         String enumType = "int*";
4819                         return enumType;
4820                 } else
4821                         return type;
4822         }
4823
4824
4825         // Handle and return the correct struct declaration
4826         private String getStructType(String type) {
4827
4828                 // Strips off array "[]" for return type
4829                 String pureType = getSimpleArrayType(type);
4830                 // Take the inner type of generic
4831                 if (getParamCategory(type) == ParamCategory.NONPRIMITIVES)
4832                         pureType = getGenericType(type);
4833                 if (isStructClass(pureType)) {
4834                         String structType = "int";
4835                         return structType;
4836                 } else
4837                         return type;
4838         }
4839
4840
4841         // Check if this an enum declaration
4842         private boolean isEnumClass(String type) {
4843
4844                 // Just iterate over the set of interfaces
4845                 for (String intface : mapIntfacePTH.keySet()) {
4846                         DeclarationHandler decHandler = mapIntDeclHand.get(intface);
4847                         EnumDecl enumDecl = (EnumDecl) decHandler.getEnumDecl(intface);
4848                         Set<String> setEnumDecl = enumDecl.getEnumDeclarations();
4849                         if (setEnumDecl.contains(type))
4850                                 return true;
4851                 }
4852                 return false;
4853         }
4854
4855
4856         // Check if this an struct declaration
4857         private boolean isStructClass(String type) {
4858
4859                 // Just iterate over the set of interfaces
4860                 for (String intface : mapIntfacePTH.keySet()) {
4861                         DeclarationHandler decHandler = mapIntDeclHand.get(intface);
4862                         StructDecl structDecl = (StructDecl) decHandler.getStructDecl(intface);
4863                         List<String> listStructDecl = structDecl.getStructTypes();
4864                         if (listStructDecl.contains(type))
4865                                 return true;
4866                 }
4867                 return false;
4868         }
4869
4870
4871         // Return a struct declaration
4872         private StructDecl getStructDecl(String type) {
4873
4874                 // Just iterate over the set of interfaces
4875                 for (String intface : mapIntfacePTH.keySet()) {
4876                         DeclarationHandler decHandler = mapIntDeclHand.get(intface);
4877                         StructDecl structDecl = (StructDecl) decHandler.getStructDecl(intface);
4878                         List<String> listStructDecl = structDecl.getStructTypes();
4879                         if (listStructDecl.contains(type))
4880                                 return structDecl;
4881                 }
4882                 return null;
4883         }
4884
4885
4886         // Return number of members (-1 if not found)
4887         private int getNumOfMembers(String type) {
4888
4889                 // Just iterate over the set of interfaces
4890                 for (String intface : mapIntfacePTH.keySet()) {
4891                         DeclarationHandler decHandler = mapIntDeclHand.get(intface);
4892                         StructDecl structDecl = (StructDecl) decHandler.getStructDecl(intface);
4893                         List<String> listStructDecl = structDecl.getStructTypes();
4894                         if (listStructDecl.contains(type))
4895                                 return structDecl.getNumOfMembers(type);
4896                 }
4897                 return -1;
4898         }
4899
4900
4901         // Generate a set of classes for include statements
4902         private Set<String> getIncludeClasses(Collection<String> methods, InterfaceDecl intDecl, String intface, boolean needExchange) {
4903
4904                 Set<String> includeClasses = new HashSet<String>();
4905                 for (String method : methods) {
4906
4907                         List<String> methPrmTypes = intDecl.getMethodParamTypes(method);
4908                         List<String> methParams = intDecl.getMethodParams(method);
4909                         for (int i = 0; i < methPrmTypes.size(); i++) {
4910
4911                                 String simpleType = getSimpleType(methPrmTypes.get(i));
4912                                 String param = methParams.get(i);
4913                                 if (getParamCategory(simpleType) == ParamCategory.NONPRIMITIVES) {
4914                                         includeClasses.add("<" + getNonPrimitiveCplusClass(simpleType) + ">");
4915                                 } else if (getParamCategory(simpleType) == ParamCategory.USERDEFINED) {
4916                                         // For original interface, we need it exchanged... not for stub interfaces
4917                                         if (needExchange) {
4918                                                 includeClasses.add("\"" + exchangeParamType(simpleType) + ".hpp\"");
4919                                                 includeClasses.add("\"" + exchangeParamType(simpleType) + "_CallbackStub.hpp\"");
4920                                         } else {
4921                                                 includeClasses.add("\"" + simpleType + ".hpp\"");
4922                                                 includeClasses.add("\"" + simpleType + "_CallbackSkeleton.hpp\"");
4923                                         }
4924                                 } else if (getParamCategory(getSimpleArrayType(simpleType)) == ParamCategory.ENUM) {
4925                                         includeClasses.add("\"" + simpleType + ".hpp\"");
4926                                 } else if (getParamCategory(getSimpleArrayType(simpleType)) == ParamCategory.STRUCT) {
4927                                         includeClasses.add("\"" + simpleType + ".hpp\"");
4928                                 } else if (param.contains("[]")) {
4929                                 // Check if this is array for C++; translate into vector
4930                                         includeClasses.add("<vector>");
4931                                 }
4932                         }
4933                 }
4934                 return includeClasses;
4935         }
4936
4937
4938         // Generate a set of callback classes
4939         private Set<String> getCallbackClasses(Collection<String> methods, InterfaceDecl intDecl) {
4940
4941                 Set<String> callbackClasses = new HashSet<String>();
4942                 for (String method : methods) {
4943
4944                         List<String> methPrmTypes = intDecl.getMethodParamTypes(method);
4945                         List<String> methParams = intDecl.getMethodParams(method);
4946                         for (int i = 0; i < methPrmTypes.size(); i++) {
4947
4948                                 String type = methPrmTypes.get(i);
4949                                 if (getParamCategory(type) == ParamCategory.USERDEFINED) {
4950                                         callbackClasses.add(type);
4951                                 } else if (getParamCategory(type) == ParamCategory.NONPRIMITIVES) {
4952                                 // Can be a List<...> of callback objects ...
4953                                         String genericType = getTypeOfGeneric(type)[0];
4954                                         if (getParamCategory(type) == ParamCategory.USERDEFINED) {
4955                                                 callbackClasses.add(type);
4956                                         }
4957                                 }
4958                         }
4959                 }
4960                 return callbackClasses;
4961         }
4962
4963
4964         // Print import statements into file
4965         private void printImportStatements(Collection<String> importClasses) {
4966
4967                 for(String cls : importClasses) {
4968                         println("import " + cls + ";");
4969                 }
4970         }
4971
4972
4973         // Print include statements into file
4974         private void printIncludeStatements(Collection<String> includeClasses) {
4975
4976                 for(String cls : includeClasses) {
4977                         println("#include " + cls);
4978                 }
4979         }
4980
4981
4982         // Get the C++ version of a non-primitive type
4983         // e.g. set for Set and map for Map
4984         // Input nonPrimitiveType has to be generics in format
4985         private String[] getTypeOfGeneric(String nonPrimitiveType) {
4986
4987                 // Handle <, >, and , for 2-type generic/template
4988                 String[] substr = nonPrimitiveType.split("<")[1].split(">")[0].split(",");
4989                 return substr;
4990         }
4991
4992
4993         // Gets generic type inside "<" and ">"
4994         private String getGenericType(String type) {
4995
4996                 // Handle <, >, and , for 2-type generic/template
4997                 if (getParamCategory(type) == ParamCategory.NONPRIMITIVES) {
4998                         String[] substr = type.split("<")[1].split(">")[0].split(",");
4999                         return substr[0];
5000                 } else
5001                         return type;
5002         }
5003
5004
5005         // This helper function strips off array declaration, e.g. int[] becomes int
5006         private String getSimpleArrayType(String type) {
5007
5008                 // Handle [ for array declaration
5009                 String substr = type;
5010                 if (type.contains("[]")) {
5011                         substr = type.split("\\[\\]")[0];
5012                 }
5013                 return substr;
5014         }
5015
5016
5017         // This helper function strips off array declaration, e.g. D[] becomes D
5018         private String getSimpleIdentifier(String ident) {
5019
5020                 // Handle [ for array declaration
5021                 String substr = ident;
5022                 if (ident.contains("[]")) {
5023                         substr = ident.split("\\[\\]")[0];
5024                 }
5025                 return substr;
5026         }
5027
5028
5029         // Checks and gets type in C++
5030         private String checkAndGetCplusType(String paramType) {
5031
5032                 if (getParamCategory(paramType) == ParamCategory.PRIMITIVES) {
5033                         return convertType(paramType);
5034                 } else if (getParamCategory(paramType) == ParamCategory.NONPRIMITIVES) {
5035
5036                         // Check for generic/template format
5037                         if (paramType.contains("<") && paramType.contains(">")) {
5038
5039                                 String genericClass = getSimpleType(paramType);
5040                                 String genericType = getGenericType(paramType);
5041                                 String cplusTemplate = null;
5042                                 cplusTemplate = getNonPrimitiveCplusClass(genericClass);
5043                                 if(getParamCategory(getGenericType(paramType)) == ParamCategory.USERDEFINED) {
5044                                         cplusTemplate = cplusTemplate + "<" + genericType + "*>";
5045                                 } else {
5046                                         cplusTemplate = cplusTemplate + "<" + convertType(genericType) + ">";
5047                                 }
5048                                 return cplusTemplate;
5049                         } else
5050                                 return getNonPrimitiveCplusClass(paramType);
5051                 } else if(paramType.contains("[]")) {   // Array type (used for return type only)
5052                         String cArray = "vector<" + convertType(getSimpleArrayType(paramType)) + ">";
5053                         return cArray;
5054                 } else if(getParamCategory(paramType) == ParamCategory.USERDEFINED) {
5055                         return paramType + "*";
5056                 } else
5057                         // Just return it as is if it's not non-primitives
5058                         return paramType;
5059         }
5060
5061
5062         // Detect array declaration, e.g. int A[],
5063         //              then generate "int A[]" in C++ as "vector<int> A"
5064         private String checkAndGetCplusArray(String paramType, String param) {
5065
5066                 String paramComplete = null;
5067                 // Check for array declaration
5068                 if (param.contains("[]")) {
5069                         paramComplete = "vector<" + paramType + "> " + param.replace("[]","");
5070                 } else
5071                         // Just return it as is if it's not an array
5072                         paramComplete = paramType + " " + param;
5073
5074                 return paramComplete;
5075         }
5076
5077
5078         // Detect array declaration, e.g. int A[],
5079         //              then generate "int A[]" in C++ as "vector<int> A"
5080         // This method just returns the type
5081         private String checkAndGetCplusArrayType(String paramType) {
5082
5083                 String paramTypeRet = null;
5084                 // Check for array declaration
5085                 if (paramType.contains("[]")) {
5086                         String type = paramType.split("\\[\\]")[0];
5087                         paramTypeRet = checkAndGetCplusType(type) + "[]";
5088                 } else if (paramType.contains("vector")) {
5089                         // Just return it as is if it's not an array
5090                         String type = paramType.split("<")[1].split(">")[0];
5091                         paramTypeRet = checkAndGetCplusType(type) + "[]";
5092                 } else
5093                         paramTypeRet = paramType;
5094
5095                 return paramTypeRet;
5096         }
5097
5098
5099         // Detect array declaration, e.g. int A[],
5100         //              then generate "int A[]" in C++ as "vector<int> A"
5101         // This method just returns the type
5102         private String checkAndGetCplusArrayType(String paramType, String param) {
5103
5104                 String paramTypeRet = null;
5105                 // Check for array declaration
5106                 if (param.contains("[]")) {
5107                         paramTypeRet = checkAndGetCplusType(paramType) + "[]";
5108                 } else if (paramType.contains("vector")) {
5109                         // Just return it as is if it's not an array
5110                         String type = paramType.split("<")[1].split(">")[0];
5111                         paramTypeRet = checkAndGetCplusType(type) + "[]";
5112                 } else
5113                         paramTypeRet = paramType;
5114
5115                 return paramTypeRet;
5116         }
5117
5118
5119         // Return the class type for class resolution (for return value)
5120         // - Check and return C++ array class, e.g. int A[] into int*
5121         // - Check and return C++ vector class, e.g. List<Integer> A into vector<int>
5122         private String checkAndGetCplusRetClsType(String paramType) {
5123
5124                 String paramTypeRet = null;
5125                 // Check for array declaration
5126                 if (paramType.contains("[]")) {
5127                         String type = paramType.split("\\[\\]")[0];
5128                         paramTypeRet = getSimpleArrayType(type) + "*";
5129                 } else if (paramType.contains("<") && paramType.contains(">")) {
5130                         // Just return it as is if it's not an array
5131                         String type = paramType.split("<")[1].split(">")[0];
5132                         paramTypeRet = "vector<" + getGenericType(type) + ">";
5133                 } else
5134                         paramTypeRet = paramType;
5135
5136                 return paramTypeRet;
5137         }
5138
5139
5140         // Return the class type for class resolution (for method arguments)
5141         // - Check and return C++ array class, e.g. int A[] into int*
5142         // - Check and return C++ vector class, e.g. List<Integer> A into vector<int>
5143         private String checkAndGetCplusArgClsType(String paramType, String param) {
5144
5145                 String paramTypeRet = getEnumCplusClsType(paramType);
5146                 if (!paramTypeRet.equals(paramType))
5147                 // Just return if it is an enum type
5148                 // Type will still be the same if it's not an enum type
5149                         return paramTypeRet;
5150
5151                 // Check for array declaration
5152                 if (param.contains("[]")) {
5153                         paramTypeRet = getSimpleArrayType(paramType) + "*";
5154                 } else if (paramType.contains("<") && paramType.contains(">")) {
5155                         // Just return it as is if it's not an array
5156                         String type = paramType.split("<")[1].split(">")[0];
5157                         paramTypeRet = "vector<" + getGenericType(type) + ">";
5158                 } else
5159                         paramTypeRet = paramType;
5160
5161                 return paramTypeRet;
5162         }
5163
5164
5165         // Detect array declaration, e.g. int A[],
5166         //              then generate type "int[]"
5167         private String checkAndGetArray(String paramType, String param) {
5168
5169                 String paramTypeRet = null;
5170                 // Check for array declaration
5171                 if (param.contains("[]")) {
5172                         paramTypeRet = paramType + "[]";
5173                 } else
5174                         // Just return it as is if it's not an array
5175                         paramTypeRet = paramType;
5176
5177                 return paramTypeRet;
5178         }
5179
5180
5181         // Is array or list?
5182         private boolean isArrayOrList(String paramType, String param) {
5183
5184                 // Check for array declaration
5185                 if (isArray(param))
5186                         return true;
5187                 else if (isList(paramType))
5188                         return true;
5189                 else
5190                         return false;
5191         }
5192
5193
5194         // Is array?
5195         // For return type we use retType as input parameter
5196         private boolean isArray(String param) {
5197
5198                 // Check for array declaration
5199                 if (param.contains("[]"))
5200                         return true;
5201                 else
5202                         return false;
5203         }
5204
5205
5206         // Is list?
5207         private boolean isList(String paramType) {
5208
5209                 // Check for array declaration
5210                 if (paramType.contains("List"))
5211                         return true;
5212                 else
5213                         return false;
5214         }
5215
5216
5217         // Get the right type for a callback object
5218         private String checkAndGetParamClass(String paramType) {
5219
5220                 // Check if this is generics
5221                 if(getParamCategory(paramType) == ParamCategory.USERDEFINED) {
5222                         return exchangeParamType(paramType);
5223                 } else if (isList(paramType) &&
5224                                 (getParamCategory(getGenericType(paramType)) == ParamCategory.USERDEFINED)) {
5225                         return "List<" + exchangeParamType(getGenericType(paramType)) + ">";
5226                 } else
5227                         return paramType;
5228         }
5229
5230
5231         // Returns the other interface for type-checking purposes for USERDEFINED
5232         //              classes based on the information provided in multiple policy files
5233         // e.g. return CameraWithXXX instead of Camera
5234         private String exchangeParamType(String intface) {
5235
5236                 // Param type that's passed is the interface name we need to look for
5237                 //              in the map of interfaces, based on available policy files.
5238                 DeclarationHandler decHandler = mapIntDeclHand.get(intface);
5239                 if (decHandler != null) {
5240                 // We've found the required interface policy files
5241                         RequiresDecl reqDecl = (RequiresDecl) decHandler.getRequiresDecl(intface);
5242                         Set<String> setExchInt = reqDecl.getInterfaces();
5243                         if (setExchInt.size() == 1) {
5244                                 Iterator iter = setExchInt.iterator();
5245                                 return (String) iter.next();
5246                         } else {
5247                                 throw new Error("IoTCompiler: Ambiguous stub interfaces: " + setExchInt.toString() +
5248                                         ". Only one new interface can be declared if the object " + intface +
5249                                         " needs to be passed in as an input parameter!\n");
5250                         }
5251                 } else {
5252                 // NULL value - this means policy files missing
5253                         throw new Error("IoTCompiler: Parameter type lookup failed for " + intface +
5254                                 "... Please provide the necessary policy files for user-defined types." +
5255                                 " If this is an array please type the brackets after the variable name," +
5256                                 " e.g. \"String str[]\", not \"String[] str\"." +
5257                                 " If this is a Collections (Java) / STL (C++) type, this compiler only" +
5258                                 " supports List/ArrayList (Java) or list (C++).\n");
5259                 }
5260         }
5261
5262
5263         public static void main(String[] args) throws Exception {
5264
5265                 // If there is no argument or just "--help" or "-h", then invoke printUsage()
5266                 if ((args[0].equals("-help") ||
5267                          args[0].equals("--help")||
5268                          args[0].equals("-h"))   ||
5269                         (args.length == 0)) {
5270
5271                         IoTCompiler.printUsage();
5272
5273                 } else if (args.length > 1) {
5274
5275                         IoTCompiler comp = new IoTCompiler();
5276                         int i = 0;
5277                         do {
5278                                 // Parse main policy file
5279                                 ParseNode pnPol = IoTCompiler.parseFile(args[i]);
5280                                 // Parse "requires" policy file
5281                                 ParseNode pnReq = IoTCompiler.parseFile(args[i+1]);
5282                                 // Get interface name
5283                                 String intface = ParseTreeHandler.getOrigIntface(pnPol);
5284                                 comp.setDataStructures(intface, pnPol, pnReq);
5285                                 comp.getMethodsForIntface(intface);
5286                                 i = i + 2;
5287                         // 1) Check if this is the last option before "-java" or "-cplus"
5288                         // 2) Check if this is really the last option (no "-java" or "-cplus")
5289                         } while(!args[i].equals("-java") &&
5290                                         !args[i].equals("-cplus") &&
5291                                         (i < args.length));
5292
5293                         // Generate everything if we don't see "-java" or "-cplus"
5294                         if (i == args.length) {
5295                                 comp.generateEnumJava();
5296                                 comp.generateStructJava();
5297                                 comp.generateJavaLocalInterfaces();
5298                                 comp.generateJavaInterfaces();
5299                                 comp.generateJavaStubClasses();
5300                                 comp.generateJavaCallbackStubClasses();
5301                                 comp.generateJavaSkeletonClass();
5302                                 comp.generateJavaCallbackSkeletonClass();
5303                                 comp.generateEnumCplus();
5304                                 comp.generateStructCplus();
5305                                 comp.generateCplusLocalInterfaces();
5306                                 comp.generateCPlusInterfaces();
5307                                 comp.generateCPlusStubClasses();
5308                                 comp.generateCPlusCallbackStubClasses();
5309                                 comp.generateCplusSkeletonClass();
5310                                 comp.generateCplusCallbackSkeletonClass();
5311                         } else {
5312                         // Check other options
5313                                 while(i < args.length) {
5314                                         // Error checking
5315                                         if (!args[i].equals("-java") &&
5316                                                 !args[i].equals("-cplus")) {
5317                                                 throw new Error("IoTCompiler: ERROR - unrecognized command line option: " + args[i] + "\n");
5318                                         } else {
5319                                                 if (i + 1 < args.length) {
5320                                                         comp.setDirectory(args[i+1]);
5321                                                 } else
5322                                                         throw new Error("IoTCompiler: ERROR - please provide <directory> after option: " + args[i] + "\n");
5323
5324                                                 if (args[i].equals("-java")) {
5325                                                         comp.generateEnumJava();
5326                                                         comp.generateStructJava();
5327                                                         comp.generateJavaLocalInterfaces();
5328                                                         comp.generateJavaInterfaces();
5329                                                         comp.generateJavaStubClasses();
5330                                                         comp.generateJavaCallbackStubClasses();
5331                                                         comp.generateJavaSkeletonClass();
5332                                                         comp.generateJavaCallbackSkeletonClass();
5333                                                 } else {
5334                                                         comp.generateEnumCplus();
5335                                                         comp.generateStructCplus();
5336                                                         comp.generateCplusLocalInterfaces();
5337                                                         comp.generateCPlusInterfaces();
5338                                                         comp.generateCPlusStubClasses();
5339                                                         comp.generateCPlusCallbackStubClasses();
5340                                                         comp.generateCplusSkeletonClass();
5341                                                         comp.generateCplusCallbackSkeletonClass();
5342                                                 }
5343                                         }
5344                                         i = i + 2;
5345                                 }
5346                         }
5347                 } else {
5348                 // Need to at least have exactly 2 parameters, i.e. main policy file and requires file
5349                         IoTCompiler.printUsage();
5350                         throw new Error("IoTCompiler: At least two arguments (main and requires policy files) have to be provided!\n");
5351                 }
5352         }
5353 }
5354
5355