The Android Open Source Project | 54b6cfa | 2008-10-21 07:00:00 -0700 | [diff] [blame] | 1 | #include "generate_java.h" |
| 2 | #include "AST.h" |
| 3 | #include "Type.h" |
Alexey Zaytsev | 0aa7fe6 | 2008-10-21 23:52:01 +0400 | [diff] [blame^] | 4 | #include <string.h> |
The Android Open Source Project | 54b6cfa | 2008-10-21 07:00:00 -0700 | [diff] [blame] | 5 | #include <stdio.h> |
| 6 | |
| 7 | // ================================================= |
| 8 | class VariableFactory |
| 9 | { |
| 10 | public: |
| 11 | VariableFactory(const string& base); // base must be short |
| 12 | Variable* Get(Type* type); |
| 13 | Variable* Get(int index); |
| 14 | private: |
| 15 | vector<Variable*> m_vars; |
| 16 | string m_base; |
| 17 | int m_index; |
| 18 | }; |
| 19 | |
| 20 | VariableFactory::VariableFactory(const string& base) |
| 21 | :m_base(base), |
| 22 | m_index(0) |
| 23 | { |
| 24 | } |
| 25 | |
| 26 | Variable* |
| 27 | VariableFactory::Get(Type* type) |
| 28 | { |
| 29 | char name[100]; |
| 30 | sprintf(name, "%s%d", m_base.c_str(), m_index); |
| 31 | m_index++; |
| 32 | Variable* v = new Variable(type, name); |
| 33 | m_vars.push_back(v); |
| 34 | return v; |
| 35 | } |
| 36 | |
| 37 | Variable* |
| 38 | VariableFactory::Get(int index) |
| 39 | { |
| 40 | return m_vars[index]; |
| 41 | } |
| 42 | |
| 43 | // ================================================= |
| 44 | class StubClass : public Class |
| 45 | { |
| 46 | public: |
| 47 | StubClass(Type* type, Type* interfaceType); |
| 48 | virtual ~StubClass(); |
| 49 | |
| 50 | Variable* transact_code; |
| 51 | Variable* transact_data; |
| 52 | Variable* transact_reply; |
| 53 | Variable* transact_flags; |
| 54 | SwitchStatement* transact_switch; |
| 55 | private: |
| 56 | void make_as_interface(Type* interfaceType); |
| 57 | }; |
| 58 | |
| 59 | StubClass::StubClass(Type* type, Type* interfaceType) |
| 60 | :Class() |
| 61 | { |
| 62 | this->comment = "/** Local-side IPC implementation stub class. */"; |
| 63 | this->modifiers = PUBLIC | ABSTRACT | STATIC; |
| 64 | this->what = Class::CLASS; |
| 65 | this->type = type; |
| 66 | this->extends = BINDER_NATIVE_TYPE; |
| 67 | this->interfaces.push_back(interfaceType); |
| 68 | |
| 69 | // descriptor |
| 70 | Field* descriptor = new Field(STATIC | FINAL | PRIVATE, |
| 71 | new Variable(STRING_TYPE, "DESCRIPTOR")); |
| 72 | descriptor->value = "\"" + interfaceType->QualifiedName() + "\""; |
| 73 | this->elements.push_back(descriptor); |
| 74 | |
| 75 | // ctor |
| 76 | Method* ctor = new Method; |
| 77 | ctor->modifiers = PUBLIC; |
| 78 | ctor->comment = "/** Construct the stub at attach it to the " |
| 79 | "interface. */"; |
| 80 | ctor->name = "Stub"; |
| 81 | ctor->statements = new StatementBlock; |
| 82 | MethodCall* attach = new MethodCall(THIS_VALUE, "attachInterface", |
| 83 | 2, THIS_VALUE, new LiteralExpression("DESCRIPTOR")); |
| 84 | ctor->statements->Add(attach); |
| 85 | this->elements.push_back(ctor); |
| 86 | |
| 87 | // asInterface |
| 88 | make_as_interface(interfaceType); |
| 89 | |
| 90 | // asBinder |
| 91 | Method* asBinder = new Method; |
| 92 | asBinder->modifiers = PUBLIC; |
| 93 | asBinder->returnType = IBINDER_TYPE; |
| 94 | asBinder->name = "asBinder"; |
| 95 | asBinder->statements = new StatementBlock; |
| 96 | asBinder->statements->Add(new ReturnStatement(THIS_VALUE)); |
| 97 | this->elements.push_back(asBinder); |
| 98 | |
| 99 | // onTransact |
| 100 | this->transact_code = new Variable(INT_TYPE, "code"); |
| 101 | this->transact_data = new Variable(PARCEL_TYPE, "data"); |
| 102 | this->transact_reply = new Variable(PARCEL_TYPE, "reply"); |
| 103 | this->transact_flags = new Variable(INT_TYPE, "flags"); |
| 104 | Method* onTransact = new Method; |
| 105 | onTransact->modifiers = PUBLIC; |
| 106 | onTransact->returnType = BOOLEAN_TYPE; |
| 107 | onTransact->name = "onTransact"; |
| 108 | onTransact->parameters.push_back(this->transact_code); |
| 109 | onTransact->parameters.push_back(this->transact_data); |
| 110 | onTransact->parameters.push_back(this->transact_reply); |
| 111 | onTransact->parameters.push_back(this->transact_flags); |
| 112 | onTransact->statements = new StatementBlock; |
| 113 | onTransact->exceptions.push_back(REMOTE_EXCEPTION_TYPE); |
| 114 | this->elements.push_back(onTransact); |
| 115 | this->transact_switch = new SwitchStatement(this->transact_code); |
| 116 | |
| 117 | onTransact->statements->Add(this->transact_switch); |
| 118 | MethodCall* superCall = new MethodCall(SUPER_VALUE, "onTransact", 4, |
| 119 | this->transact_code, this->transact_data, |
| 120 | this->transact_reply, this->transact_flags); |
| 121 | onTransact->statements->Add(new ReturnStatement(superCall)); |
| 122 | } |
| 123 | |
| 124 | StubClass::~StubClass() |
| 125 | { |
| 126 | } |
| 127 | |
| 128 | void |
| 129 | StubClass::make_as_interface(Type *interfaceType) |
| 130 | { |
| 131 | Variable* obj = new Variable(IBINDER_TYPE, "obj"); |
| 132 | |
| 133 | Method* m = new Method; |
| 134 | m->comment = "/**\n * Cast an IBinder object into an "; |
| 135 | m->comment += interfaceType->Name(); |
| 136 | m->comment += " interface,\n"; |
| 137 | m->comment += " * generating a proxy if needed.\n */"; |
| 138 | m->modifiers = PUBLIC | STATIC; |
| 139 | m->returnType = interfaceType; |
| 140 | m->name = "asInterface"; |
| 141 | m->parameters.push_back(obj); |
| 142 | m->statements = new StatementBlock; |
| 143 | |
| 144 | IfStatement* ifstatement = new IfStatement(); |
| 145 | ifstatement->expression = new Comparison(obj, "==", NULL_VALUE); |
| 146 | ifstatement->statements = new StatementBlock; |
| 147 | ifstatement->statements->Add(new ReturnStatement(NULL_VALUE)); |
| 148 | m->statements->Add(ifstatement); |
| 149 | |
| 150 | // IInterface iin = obj.queryLocalInterface(DESCRIPTOR) |
| 151 | MethodCall* queryLocalInterface = new MethodCall(obj, "queryLocalInterface"); |
| 152 | queryLocalInterface->arguments.push_back(new LiteralExpression("DESCRIPTOR")); |
| 153 | IInterfaceType* iinType = new IInterfaceType(); |
| 154 | Variable *iin = new Variable(iinType, "iin"); |
| 155 | VariableDeclaration* iinVd = new VariableDeclaration(iin, queryLocalInterface, iinType); |
| 156 | m->statements->Add(iinVd); |
| 157 | |
| 158 | // Ensure the instance type of the local object is as expected. |
| 159 | // One scenario where this is needed is if another package (with a |
| 160 | // different class loader) runs in the same process as the service. |
| 161 | |
| 162 | // if (iin != null && iin instanceof <interfaceType>) return (<interfaceType>) iin; |
| 163 | Comparison* iinNotNull = new Comparison(iin, "!=", NULL_VALUE); |
| 164 | Comparison* instOfCheck = new Comparison(iin, " instanceof ", |
| 165 | new LiteralExpression(interfaceType->QualifiedName())); |
| 166 | IfStatement* instOfStatement = new IfStatement(); |
| 167 | instOfStatement->expression = new Comparison(iinNotNull, "&&", instOfCheck); |
| 168 | instOfStatement->statements = new StatementBlock; |
| 169 | instOfStatement->statements->Add(new ReturnStatement(new Cast(interfaceType, iin))); |
| 170 | m->statements->Add(instOfStatement); |
| 171 | |
| 172 | string proxyType = interfaceType->QualifiedName(); |
| 173 | proxyType += ".Stub.Proxy"; |
| 174 | NewExpression* ne = new NewExpression(NAMES.Find(proxyType)); |
| 175 | ne->arguments.push_back(obj); |
| 176 | m->statements->Add(new ReturnStatement(ne)); |
| 177 | |
| 178 | this->elements.push_back(m); |
| 179 | } |
| 180 | |
| 181 | |
| 182 | |
| 183 | // ================================================= |
| 184 | class ProxyClass : public Class |
| 185 | { |
| 186 | public: |
| 187 | ProxyClass(Type* type, InterfaceType* interfaceType); |
| 188 | virtual ~ProxyClass(); |
| 189 | |
| 190 | Variable* mRemote; |
| 191 | bool mOneWay; |
| 192 | }; |
| 193 | |
| 194 | ProxyClass::ProxyClass(Type* type, InterfaceType* interfaceType) |
| 195 | :Class() |
| 196 | { |
| 197 | this->modifiers = PRIVATE | STATIC; |
| 198 | this->what = Class::CLASS; |
| 199 | this->type = type; |
| 200 | this->interfaces.push_back(interfaceType); |
| 201 | |
| 202 | mOneWay = interfaceType->OneWay(); |
| 203 | |
| 204 | // IBinder mRemote |
| 205 | mRemote = new Variable(IBINDER_TYPE, "mRemote"); |
| 206 | this->elements.push_back(new Field(PRIVATE, mRemote)); |
| 207 | |
| 208 | // Proxy() |
| 209 | Variable* remote = new Variable(IBINDER_TYPE, "remote"); |
| 210 | Method* ctor = new Method; |
| 211 | ctor->name = "Proxy"; |
| 212 | ctor->statements = new StatementBlock; |
| 213 | ctor->parameters.push_back(remote); |
| 214 | ctor->statements->Add(new Assignment(mRemote, remote)); |
| 215 | this->elements.push_back(ctor); |
| 216 | |
| 217 | // IBinder asBinder() |
| 218 | Method* asBinder = new Method; |
| 219 | asBinder->modifiers = PUBLIC; |
| 220 | asBinder->returnType = IBINDER_TYPE; |
| 221 | asBinder->name = "asBinder"; |
| 222 | asBinder->statements = new StatementBlock; |
| 223 | asBinder->statements->Add(new ReturnStatement(mRemote)); |
| 224 | this->elements.push_back(asBinder); |
| 225 | } |
| 226 | |
| 227 | ProxyClass::~ProxyClass() |
| 228 | { |
| 229 | } |
| 230 | |
| 231 | // ================================================= |
| 232 | static string |
| 233 | gather_comments(extra_text_type* extra) |
| 234 | { |
| 235 | string s; |
| 236 | while (extra) { |
| 237 | if (extra->which == SHORT_COMMENT) { |
| 238 | s += extra->data; |
| 239 | } |
| 240 | else if (extra->which == LONG_COMMENT) { |
| 241 | s += "/*"; |
| 242 | s += extra->data; |
| 243 | s += "*/"; |
| 244 | } |
| 245 | extra = extra->next; |
| 246 | } |
| 247 | return s; |
| 248 | } |
| 249 | |
| 250 | static string |
| 251 | append(const char* a, const char* b) |
| 252 | { |
| 253 | string s = a; |
| 254 | s += b; |
| 255 | return s; |
| 256 | } |
| 257 | |
| 258 | static void |
| 259 | generate_new_array(Type* t, StatementBlock* addTo, Variable* v, |
| 260 | Variable* parcel) |
| 261 | { |
| 262 | Variable* len = new Variable(INT_TYPE, v->name + "_length"); |
| 263 | addTo->Add(new VariableDeclaration(len, new MethodCall(parcel, "readInt"))); |
| 264 | IfStatement* lencheck = new IfStatement(); |
| 265 | lencheck->expression = new Comparison(len, "<", new LiteralExpression("0")); |
| 266 | lencheck->statements->Add(new Assignment(v, NULL_VALUE)); |
| 267 | lencheck->elseif = new IfStatement(); |
| 268 | lencheck->elseif->statements->Add(new Assignment(v, |
| 269 | new NewArrayExpression(t, len))); |
| 270 | addTo->Add(lencheck); |
| 271 | } |
| 272 | |
| 273 | static void |
| 274 | generate_write_to_parcel(Type* t, StatementBlock* addTo, Variable* v, |
| 275 | Variable* parcel, int flags) |
| 276 | { |
| 277 | if (v->dimension == 0) { |
| 278 | t->WriteToParcel(addTo, v, parcel, flags); |
| 279 | } |
| 280 | if (v->dimension == 1) { |
| 281 | t->WriteArrayToParcel(addTo, v, parcel, flags); |
| 282 | } |
| 283 | } |
| 284 | |
| 285 | static void |
| 286 | generate_create_from_parcel(Type* t, StatementBlock* addTo, Variable* v, |
| 287 | Variable* parcel) |
| 288 | { |
| 289 | if (v->dimension == 0) { |
| 290 | t->CreateFromParcel(addTo, v, parcel); |
| 291 | } |
| 292 | if (v->dimension == 1) { |
| 293 | t->CreateArrayFromParcel(addTo, v, parcel); |
| 294 | } |
| 295 | } |
| 296 | |
| 297 | static void |
| 298 | generate_read_from_parcel(Type* t, StatementBlock* addTo, Variable* v, |
| 299 | Variable* parcel) |
| 300 | { |
| 301 | if (v->dimension == 0) { |
| 302 | t->ReadFromParcel(addTo, v, parcel); |
| 303 | } |
| 304 | if (v->dimension == 1) { |
| 305 | t->ReadArrayFromParcel(addTo, v, parcel); |
| 306 | } |
| 307 | } |
| 308 | |
| 309 | |
| 310 | static void |
| 311 | generate_method(const method_type* method, Class* interface, |
| 312 | StubClass* stubClass, ProxyClass* proxyClass, int index) |
| 313 | { |
| 314 | arg_type* arg; |
| 315 | int i; |
| 316 | bool hasOutParams = false; |
| 317 | |
| 318 | const bool oneway = proxyClass->mOneWay || method->oneway; |
| 319 | |
| 320 | // == the TRANSACT_ constant ============================================= |
| 321 | string transactCodeName = "TRANSACTION_"; |
| 322 | transactCodeName += method->name.data; |
| 323 | |
| 324 | char transactCodeValue[50]; |
| 325 | sprintf(transactCodeValue, "(IBinder.FIRST_CALL_TRANSACTION + %d)", index); |
| 326 | |
| 327 | Field* transactCode = new Field(STATIC | FINAL, |
| 328 | new Variable(INT_TYPE, transactCodeName)); |
| 329 | transactCode->value = transactCodeValue; |
| 330 | stubClass->elements.push_back(transactCode); |
| 331 | |
| 332 | // == the declaration in the interface =================================== |
| 333 | Method* decl = new Method; |
| 334 | decl->comment = gather_comments(method->comments_token->extra); |
| 335 | decl->modifiers = PUBLIC; |
| 336 | decl->returnType = NAMES.Search(method->type.type.data); |
| 337 | decl->returnTypeDimension = method->type.dimension; |
| 338 | decl->name = method->name.data; |
| 339 | |
| 340 | arg = method->args; |
| 341 | while (arg != NULL) { |
| 342 | decl->parameters.push_back(new Variable( |
| 343 | NAMES.Search(arg->type.type.data), arg->name.data, |
| 344 | arg->type.dimension)); |
| 345 | arg = arg->next; |
| 346 | } |
| 347 | |
| 348 | decl->exceptions.push_back(REMOTE_EXCEPTION_TYPE); |
| 349 | |
| 350 | interface->elements.push_back(decl); |
| 351 | |
| 352 | // == the stub method ==================================================== |
| 353 | |
| 354 | Case* c = new Case(transactCodeName); |
| 355 | |
| 356 | MethodCall* realCall = new MethodCall(THIS_VALUE, method->name.data); |
| 357 | |
| 358 | // interface token validation is the very first thing we do |
| 359 | c->statements->Add(new MethodCall(stubClass->transact_data, |
| 360 | "enforceInterface", 1, new LiteralExpression("DESCRIPTOR"))); |
| 361 | |
| 362 | // args |
| 363 | VariableFactory stubArgs("_arg"); |
| 364 | arg = method->args; |
| 365 | while (arg != NULL) { |
| 366 | Type* t = NAMES.Search(arg->type.type.data); |
| 367 | Variable* v = stubArgs.Get(t); |
| 368 | v->dimension = arg->type.dimension; |
| 369 | |
| 370 | c->statements->Add(new VariableDeclaration(v)); |
| 371 | |
| 372 | if (convert_direction(arg->direction.data) & IN_PARAMETER) { |
| 373 | generate_create_from_parcel(t, c->statements, v, |
| 374 | stubClass->transact_data); |
| 375 | } else { |
| 376 | if (arg->type.dimension == 0) { |
| 377 | c->statements->Add(new Assignment( |
| 378 | v, new NewExpression(v->type))); |
| 379 | } |
| 380 | else if (arg->type.dimension == 1) { |
| 381 | generate_new_array(v->type, c->statements, v, |
| 382 | stubClass->transact_data); |
| 383 | } |
| 384 | else { |
| 385 | fprintf(stderr, "aidl:internal error %s:%d\n", __FILE__, |
| 386 | __LINE__); |
| 387 | } |
| 388 | } |
| 389 | |
| 390 | realCall->arguments.push_back(v); |
| 391 | |
| 392 | arg = arg->next; |
| 393 | } |
| 394 | |
| 395 | // the real call |
| 396 | Variable* _result = NULL; |
| 397 | if (0 == strcmp(method->type.type.data, "void")) { |
| 398 | c->statements->Add(realCall); |
| 399 | |
| 400 | if (!oneway) { |
| 401 | // report that there were no exceptions |
| 402 | MethodCall* ex = new MethodCall(stubClass->transact_reply, |
| 403 | "writeNoException", 0); |
| 404 | c->statements->Add(ex); |
| 405 | } |
| 406 | } else { |
| 407 | _result = new Variable(decl->returnType, "_result", |
| 408 | decl->returnTypeDimension); |
| 409 | c->statements->Add(new VariableDeclaration(_result, realCall)); |
| 410 | |
| 411 | if (!oneway) { |
| 412 | // report that there were no exceptions |
| 413 | MethodCall* ex = new MethodCall(stubClass->transact_reply, |
| 414 | "writeNoException", 0); |
| 415 | c->statements->Add(ex); |
| 416 | } |
| 417 | |
| 418 | // marshall the return value |
| 419 | generate_write_to_parcel(decl->returnType, c->statements, _result, |
| 420 | stubClass->transact_reply, |
| 421 | Type::PARCELABLE_WRITE_RETURN_VALUE); |
| 422 | } |
| 423 | |
| 424 | // out parameters |
| 425 | i = 0; |
| 426 | arg = method->args; |
| 427 | while (arg != NULL) { |
| 428 | Type* t = NAMES.Search(arg->type.type.data); |
| 429 | Variable* v = stubArgs.Get(i++); |
| 430 | |
| 431 | if (convert_direction(arg->direction.data) & OUT_PARAMETER) { |
| 432 | generate_write_to_parcel(t, c->statements, v, |
| 433 | stubClass->transact_reply, |
| 434 | Type::PARCELABLE_WRITE_RETURN_VALUE); |
| 435 | hasOutParams = true; |
| 436 | } |
| 437 | |
| 438 | arg = arg->next; |
| 439 | } |
| 440 | |
| 441 | // return true |
| 442 | c->statements->Add(new ReturnStatement(TRUE_VALUE)); |
| 443 | stubClass->transact_switch->cases.push_back(c); |
| 444 | |
| 445 | // == the proxy method =================================================== |
| 446 | Method* proxy = new Method; |
| 447 | proxy->comment = gather_comments(method->comments_token->extra); |
| 448 | proxy->modifiers = PUBLIC; |
| 449 | proxy->returnType = NAMES.Search(method->type.type.data); |
| 450 | proxy->returnTypeDimension = method->type.dimension; |
| 451 | proxy->name = method->name.data; |
| 452 | proxy->statements = new StatementBlock; |
| 453 | arg = method->args; |
| 454 | while (arg != NULL) { |
| 455 | proxy->parameters.push_back(new Variable( |
| 456 | NAMES.Search(arg->type.type.data), arg->name.data, |
| 457 | arg->type.dimension)); |
| 458 | arg = arg->next; |
| 459 | } |
| 460 | proxy->exceptions.push_back(REMOTE_EXCEPTION_TYPE); |
| 461 | proxyClass->elements.push_back(proxy); |
| 462 | |
| 463 | // the parcels |
| 464 | Variable* _data = new Variable(PARCEL_TYPE, "_data"); |
| 465 | proxy->statements->Add(new VariableDeclaration(_data, |
| 466 | new MethodCall(PARCEL_TYPE, "obtain"))); |
| 467 | Variable* _reply = NULL; |
| 468 | if (!oneway) { |
| 469 | _reply = new Variable(PARCEL_TYPE, "_reply"); |
| 470 | proxy->statements->Add(new VariableDeclaration(_reply, |
| 471 | new MethodCall(PARCEL_TYPE, "obtain"))); |
| 472 | } |
| 473 | |
| 474 | // the return value |
| 475 | _result = NULL; |
| 476 | if (0 != strcmp(method->type.type.data, "void")) { |
| 477 | _result = new Variable(proxy->returnType, "_result", |
| 478 | method->type.dimension); |
| 479 | proxy->statements->Add(new VariableDeclaration(_result)); |
| 480 | } |
| 481 | |
| 482 | // try and finally |
| 483 | TryStatement* tryStatement = new TryStatement(); |
| 484 | proxy->statements->Add(tryStatement); |
| 485 | FinallyStatement* finallyStatement = new FinallyStatement(); |
| 486 | proxy->statements->Add(finallyStatement); |
| 487 | |
| 488 | // the interface identifier token: the DESCRIPTOR constant, marshalled as a string |
| 489 | tryStatement->statements->Add(new MethodCall(_data, "writeInterfaceToken", |
| 490 | 1, new LiteralExpression("DESCRIPTOR"))); |
| 491 | |
| 492 | // the parameters |
| 493 | arg = method->args; |
| 494 | while (arg != NULL) { |
| 495 | Type* t = NAMES.Search(arg->type.type.data); |
| 496 | Variable* v = new Variable(t, arg->name.data, arg->type.dimension); |
| 497 | int dir = convert_direction(arg->direction.data); |
| 498 | if (dir == OUT_PARAMETER && arg->type.dimension != 0) { |
| 499 | IfStatement* checklen = new IfStatement(); |
| 500 | checklen->expression = new Comparison(v, "==", NULL_VALUE); |
| 501 | checklen->statements->Add(new MethodCall(_data, "writeInt", 1, |
| 502 | new LiteralExpression("-1"))); |
| 503 | checklen->elseif = new IfStatement(); |
| 504 | checklen->elseif->statements->Add(new MethodCall(_data, "writeInt", |
| 505 | 1, new FieldVariable(v, "length"))); |
| 506 | tryStatement->statements->Add(checklen); |
| 507 | } |
| 508 | else if (dir & IN_PARAMETER) { |
| 509 | generate_write_to_parcel(t, tryStatement->statements, v, _data, 0); |
| 510 | } |
| 511 | arg = arg->next; |
| 512 | } |
| 513 | |
| 514 | // the transact call |
| 515 | MethodCall* call = new MethodCall(proxyClass->mRemote, "transact", 4, |
| 516 | new LiteralExpression("Stub." + transactCodeName), |
| 517 | _data, _reply ? _reply : NULL_VALUE, |
| 518 | new LiteralExpression( |
| 519 | oneway ? "IBinder.FLAG_ONEWAY" : "0")); |
| 520 | tryStatement->statements->Add(call); |
| 521 | |
| 522 | // throw back exceptions. |
| 523 | if (_reply) { |
| 524 | MethodCall* ex = new MethodCall(_reply, "readException", 0); |
| 525 | tryStatement->statements->Add(ex); |
| 526 | } |
| 527 | |
| 528 | // returning and cleanup |
| 529 | if (_reply != NULL) { |
| 530 | if (_result != NULL) { |
| 531 | generate_create_from_parcel(proxy->returnType, |
| 532 | tryStatement->statements, _result, _reply); |
| 533 | } |
| 534 | |
| 535 | // the out/inout parameters |
| 536 | arg = method->args; |
| 537 | while (arg != NULL) { |
| 538 | Type* t = NAMES.Search(arg->type.type.data); |
| 539 | Variable* v = new Variable(t, arg->name.data, arg->type.dimension); |
| 540 | if (convert_direction(arg->direction.data) & OUT_PARAMETER) { |
| 541 | generate_read_from_parcel(t, tryStatement->statements, |
| 542 | v, _reply); |
| 543 | } |
| 544 | arg = arg->next; |
| 545 | } |
| 546 | |
| 547 | finallyStatement->statements->Add(new MethodCall(_reply, "recycle")); |
| 548 | } |
| 549 | finallyStatement->statements->Add(new MethodCall(_data, "recycle")); |
| 550 | |
| 551 | if (_result != NULL) { |
| 552 | proxy->statements->Add(new ReturnStatement(_result)); |
| 553 | } |
| 554 | } |
| 555 | |
| 556 | static void |
| 557 | generate_interface_descriptors(StubClass* stub, ProxyClass* proxy) |
| 558 | { |
| 559 | // the interface descriptor transaction handler |
| 560 | Case* c = new Case("INTERFACE_TRANSACTION"); |
| 561 | c->statements->Add(new MethodCall(stub->transact_reply, "writeString", |
| 562 | 1, new LiteralExpression("DESCRIPTOR"))); |
| 563 | c->statements->Add(new ReturnStatement(TRUE_VALUE)); |
| 564 | stub->transact_switch->cases.push_back(c); |
| 565 | |
| 566 | // and the proxy-side method returning the descriptor directly |
| 567 | Method* getDesc = new Method; |
| 568 | getDesc->modifiers = PUBLIC; |
| 569 | getDesc->returnType = STRING_TYPE; |
| 570 | getDesc->returnTypeDimension = 0; |
| 571 | getDesc->name = "getInterfaceDescriptor"; |
| 572 | getDesc->statements = new StatementBlock; |
| 573 | getDesc->statements->Add(new ReturnStatement(new LiteralExpression("DESCRIPTOR"))); |
| 574 | proxy->elements.push_back(getDesc); |
| 575 | } |
| 576 | |
| 577 | static Class* |
| 578 | generate_interface_class(const interface_type* iface) |
| 579 | { |
| 580 | InterfaceType* interfaceType = static_cast<InterfaceType*>( |
| 581 | NAMES.Find(iface->package, iface->name.data)); |
| 582 | |
| 583 | // the interface class |
| 584 | Class* interface = new Class; |
| 585 | interface->comment = gather_comments(iface->comments_token->extra); |
| 586 | interface->modifiers = PUBLIC; |
| 587 | interface->what = Class::INTERFACE; |
| 588 | interface->type = interfaceType; |
| 589 | interface->interfaces.push_back(IINTERFACE_TYPE); |
| 590 | |
| 591 | // the stub inner class |
| 592 | StubClass* stub = new StubClass( |
| 593 | NAMES.Find(iface->package, append(iface->name.data, ".Stub").c_str()), |
| 594 | interfaceType); |
| 595 | interface->elements.push_back(stub); |
| 596 | |
| 597 | // the proxy inner class |
| 598 | ProxyClass* proxy = new ProxyClass( |
| 599 | NAMES.Find(iface->package, |
| 600 | append(iface->name.data, ".Stub.Proxy").c_str()), |
| 601 | interfaceType); |
| 602 | stub->elements.push_back(proxy); |
| 603 | |
| 604 | // stub and proxy support for getInterfaceDescriptor() |
| 605 | generate_interface_descriptors(stub, proxy); |
| 606 | |
| 607 | // all the declared methods of the interface |
| 608 | int index = 0; |
| 609 | interface_item_type* item = iface->interface_items; |
| 610 | while (item != NULL) { |
| 611 | if (item->item_type == METHOD_TYPE) { |
| 612 | generate_method((method_type*)item, interface, stub, proxy, index); |
| 613 | } |
| 614 | item = item->next; |
| 615 | index++; |
| 616 | } |
| 617 | |
| 618 | return interface; |
| 619 | } |
| 620 | |
| 621 | int |
| 622 | generate_java(const string& filename, const string& originalSrc, |
| 623 | interface_type* iface) |
| 624 | { |
| 625 | Document* document = new Document; |
| 626 | document->comment = ""; |
| 627 | if (iface->package) document->package = iface->package; |
| 628 | document->originalSrc = originalSrc; |
| 629 | document->classes.push_back(generate_interface_class(iface)); |
| 630 | |
| 631 | // printf("outputting... filename=%s\n", filename.c_str()); |
| 632 | FILE* to; |
| 633 | if (filename == "-") { |
| 634 | to = stdout; |
| 635 | } else { |
| 636 | /* open file in binary mode to ensure that the tool produces the |
| 637 | * same output on all platforms !! |
| 638 | */ |
| 639 | to = fopen(filename.c_str(), "wb"); |
| 640 | if (to == NULL) { |
| 641 | fprintf(stderr, "unable to open %s for write\n", filename.c_str()); |
| 642 | return 1; |
| 643 | } |
| 644 | } |
| 645 | |
| 646 | document->Write(to); |
| 647 | |
| 648 | fclose(to); |
| 649 | return 0; |
| 650 | } |
| 651 | |