Andreas Huber | 1aec397 | 2016-08-26 09:26:32 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2016 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
Andreas Huber | c9410c7 | 2016-07-28 12:18:40 -0700 | [diff] [blame] | 17 | #include "CompoundType.h" |
| 18 | |
Andreas Huber | f630bc8 | 2016-09-09 14:52:25 -0700 | [diff] [blame] | 19 | #include "VectorType.h" |
Iliyan Malchev | a72e0d2 | 2016-09-09 11:03:08 -0700 | [diff] [blame] | 20 | #include <hidl-util/Formatter.h> |
Andreas Huber | 5a54544 | 2016-08-03 10:44:56 -0700 | [diff] [blame] | 21 | #include <android-base/logging.h> |
| 22 | |
Andreas Huber | c9410c7 | 2016-07-28 12:18:40 -0700 | [diff] [blame] | 23 | namespace android { |
| 24 | |
Andreas Huber | 9ed827c | 2016-08-22 12:31:13 -0700 | [diff] [blame] | 25 | CompoundType::CompoundType(Style style, const char *localName) |
| 26 | : Scope(localName), |
| 27 | mStyle(style), |
Andreas Huber | c9410c7 | 2016-07-28 12:18:40 -0700 | [diff] [blame] | 28 | mFields(NULL) { |
| 29 | } |
| 30 | |
Andreas Huber | 0d0f9a2 | 2016-08-17 10:26:11 -0700 | [diff] [blame] | 31 | bool CompoundType::setFields( |
| 32 | std::vector<CompoundField *> *fields, std::string *errorMsg) { |
Andreas Huber | c9410c7 | 2016-07-28 12:18:40 -0700 | [diff] [blame] | 33 | mFields = fields; |
Andreas Huber | 5a54544 | 2016-08-03 10:44:56 -0700 | [diff] [blame] | 34 | |
| 35 | for (const auto &field : *fields) { |
| 36 | const Type &type = field->type(); |
| 37 | |
Andreas Huber | 295ad30 | 2016-08-16 11:35:00 -0700 | [diff] [blame] | 38 | if (type.isBinder()) { |
Andreas Huber | 0d0f9a2 | 2016-08-17 10:26:11 -0700 | [diff] [blame] | 39 | *errorMsg = |
| 40 | "Structs/Unions must not contain references to interfaces."; |
Andreas Huber | b95ea8a | 2016-08-15 15:35:42 -0700 | [diff] [blame] | 41 | |
| 42 | return false; |
| 43 | } |
| 44 | |
Andreas Huber | 5a54544 | 2016-08-03 10:44:56 -0700 | [diff] [blame] | 45 | if (mStyle == STYLE_UNION) { |
| 46 | if (type.needsEmbeddedReadWrite()) { |
| 47 | // Can't have those in a union. |
| 48 | |
Andreas Huber | 0d0f9a2 | 2016-08-17 10:26:11 -0700 | [diff] [blame] | 49 | *errorMsg = |
| 50 | "Unions must not contain any types that need fixup."; |
Andreas Huber | 5a54544 | 2016-08-03 10:44:56 -0700 | [diff] [blame] | 51 | |
| 52 | return false; |
| 53 | } |
Andreas Huber | 5a54544 | 2016-08-03 10:44:56 -0700 | [diff] [blame] | 54 | } |
| 55 | } |
| 56 | |
| 57 | return true; |
Andreas Huber | c9410c7 | 2016-07-28 12:18:40 -0700 | [diff] [blame] | 58 | } |
| 59 | |
Andreas Huber | f630bc8 | 2016-09-09 14:52:25 -0700 | [diff] [blame] | 60 | bool CompoundType::isCompoundType() const { |
| 61 | return true; |
| 62 | } |
| 63 | |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 64 | std::string CompoundType::getCppType( |
Steven Moreland | 979e099 | 2016-09-07 09:18:08 -0700 | [diff] [blame] | 65 | StorageMode mode, |
| 66 | std::string *extra, |
| 67 | bool specifyNamespaces) const { |
| 68 | |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 69 | extra->clear(); |
Steven Moreland | 979e099 | 2016-09-07 09:18:08 -0700 | [diff] [blame] | 70 | const std::string base = |
| 71 | specifyNamespaces ? fullName() : partialCppName(); |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 72 | |
| 73 | switch (mode) { |
| 74 | case StorageMode_Stack: |
| 75 | return base; |
| 76 | |
| 77 | case StorageMode_Argument: |
| 78 | return "const " + base + "&"; |
| 79 | |
| 80 | case StorageMode_Result: |
| 81 | return "const " + base + "*"; |
| 82 | } |
| 83 | } |
| 84 | |
Andreas Huber | 85eabdb | 2016-08-25 11:24:49 -0700 | [diff] [blame] | 85 | std::string CompoundType::getJavaType() const { |
| 86 | return fullJavaName(); |
| 87 | } |
| 88 | |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 89 | void CompoundType::emitReaderWriter( |
| 90 | Formatter &out, |
| 91 | const std::string &name, |
| 92 | const std::string &parcelObj, |
| 93 | bool parcelObjIsPointer, |
| 94 | bool isReader, |
| 95 | ErrorMode mode) const { |
Iliyan Malchev | 549e259 | 2016-08-10 08:59:12 -0700 | [diff] [blame] | 96 | const std::string parentName = "_hidl_" + name + "_parent"; |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 97 | |
| 98 | out << "size_t " << parentName << ";\n\n"; |
| 99 | |
| 100 | const std::string parcelObjDeref = |
| 101 | parcelObj + (parcelObjIsPointer ? "->" : "."); |
| 102 | |
| 103 | if (isReader) { |
| 104 | out << name |
| 105 | << " = (const " |
Andreas Huber | 0e00de4 | 2016-08-03 09:56:02 -0700 | [diff] [blame] | 106 | << fullName() |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 107 | << " *)" |
| 108 | << parcelObjDeref |
| 109 | << "readBuffer(" |
| 110 | << "&" |
| 111 | << parentName |
| 112 | << ");\n"; |
| 113 | |
| 114 | out << "if (" |
| 115 | << name |
| 116 | << " == nullptr) {\n"; |
| 117 | |
| 118 | out.indent(); |
| 119 | |
Iliyan Malchev | 549e259 | 2016-08-10 08:59:12 -0700 | [diff] [blame] | 120 | out << "_hidl_err = ::android::UNKNOWN_ERROR;\n"; |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 121 | handleError2(out, mode); |
| 122 | |
| 123 | out.unindent(); |
| 124 | out << "}\n\n"; |
| 125 | } else { |
Iliyan Malchev | 549e259 | 2016-08-10 08:59:12 -0700 | [diff] [blame] | 126 | out << "_hidl_err = " |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 127 | << parcelObjDeref |
| 128 | << "writeBuffer(&" |
| 129 | << name |
| 130 | << ", sizeof(" |
| 131 | << name |
| 132 | << "), &" |
| 133 | << parentName |
| 134 | << ");\n"; |
| 135 | |
| 136 | handleError(out, mode); |
| 137 | } |
| 138 | |
| 139 | if (mStyle != STYLE_STRUCT || !needsEmbeddedReadWrite()) { |
| 140 | return; |
| 141 | } |
| 142 | |
| 143 | emitReaderWriterEmbedded( |
| 144 | out, |
| 145 | name, |
| 146 | isReader /* nameIsPointer */, |
| 147 | parcelObj, |
| 148 | parcelObjIsPointer, |
| 149 | isReader, |
| 150 | mode, |
| 151 | parentName, |
| 152 | "0 /* parentOffset */"); |
| 153 | } |
| 154 | |
| 155 | void CompoundType::emitReaderWriterEmbedded( |
| 156 | Formatter &out, |
| 157 | const std::string &name, |
| 158 | bool nameIsPointer, |
| 159 | const std::string &parcelObj, |
| 160 | bool parcelObjIsPointer, |
| 161 | bool isReader, |
| 162 | ErrorMode mode, |
| 163 | const std::string &parentName, |
| 164 | const std::string &offsetText) const { |
| 165 | emitReaderWriterEmbeddedForTypeName( |
| 166 | out, |
| 167 | name, |
| 168 | nameIsPointer, |
| 169 | parcelObj, |
| 170 | parcelObjIsPointer, |
| 171 | isReader, |
| 172 | mode, |
| 173 | parentName, |
| 174 | offsetText, |
Andreas Huber | 0e00de4 | 2016-08-03 09:56:02 -0700 | [diff] [blame] | 175 | fullName(), |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 176 | "" /* childName */); |
| 177 | } |
| 178 | |
Andreas Huber | 85eabdb | 2016-08-25 11:24:49 -0700 | [diff] [blame] | 179 | void CompoundType::emitJavaReaderWriter( |
| 180 | Formatter &out, |
| 181 | const std::string &parcelObj, |
| 182 | const std::string &argName, |
| 183 | bool isReader) const { |
| 184 | if (isReader) { |
| 185 | out << "new " << fullJavaName() << "();\n"; |
| 186 | } |
| 187 | |
| 188 | out << argName |
| 189 | << "." |
| 190 | << (isReader ? "readFromParcel" : "writeToParcel") |
| 191 | << "(" |
| 192 | << parcelObj |
| 193 | << ");\n"; |
| 194 | } |
| 195 | |
| 196 | void CompoundType::emitJavaFieldInitializer( |
| 197 | Formatter &out, const std::string &fieldName) const { |
| 198 | out << "final " |
| 199 | << fullJavaName() |
| 200 | << " " |
| 201 | << fieldName |
| 202 | << " = new " |
| 203 | << fullJavaName() |
| 204 | << "();\n"; |
| 205 | } |
| 206 | |
| 207 | void CompoundType::emitJavaFieldReaderWriter( |
| 208 | Formatter &out, |
| 209 | const std::string &blobName, |
| 210 | const std::string &fieldName, |
| 211 | const std::string &offset, |
| 212 | bool isReader) const { |
| 213 | if (isReader) { |
| 214 | out << fieldName |
| 215 | << ".readEmbeddedFromParcel(parcel, " |
| 216 | << blobName |
| 217 | << ", " |
| 218 | << offset |
| 219 | << ");\n"; |
| 220 | |
| 221 | return; |
| 222 | } |
| 223 | |
| 224 | out << fieldName |
| 225 | << ".writeEmbeddedToBlob(" |
| 226 | << blobName |
| 227 | << ", " |
| 228 | << offset |
| 229 | << ");\n"; |
| 230 | } |
| 231 | |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 232 | status_t CompoundType::emitTypeDeclarations(Formatter &out) const { |
| 233 | out << ((mStyle == STYLE_STRUCT) ? "struct" : "union") |
| 234 | << " " |
Andreas Huber | 0e00de4 | 2016-08-03 09:56:02 -0700 | [diff] [blame] | 235 | << localName() |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 236 | << " {\n"; |
| 237 | |
| 238 | out.indent(); |
| 239 | |
| 240 | Scope::emitTypeDeclarations(out); |
| 241 | |
| 242 | for (const auto &field : *mFields) { |
| 243 | std::string extra; |
| 244 | out << field->type().getCppType(&extra) |
| 245 | << " " |
| 246 | << field->name() |
| 247 | << extra |
| 248 | << ";\n"; |
| 249 | } |
| 250 | |
| 251 | if (needsEmbeddedReadWrite()) { |
| 252 | out << "\n::android::status_t readEmbeddedFromParcel(\n"; |
| 253 | |
| 254 | out.indent(); |
| 255 | out.indent(); |
| 256 | |
Andreas Huber | 8a82ff7 | 2016-08-04 10:29:39 -0700 | [diff] [blame] | 257 | out << "const ::android::hardware::Parcel &parcel,\n" |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 258 | << "size_t parentHandle,\n" |
| 259 | << "size_t parentOffset);\n\n"; |
| 260 | |
| 261 | out.unindent(); |
| 262 | out.unindent(); |
| 263 | |
| 264 | out << "::android::status_t writeEmbeddedToParcel(\n"; |
| 265 | |
| 266 | out.indent(); |
| 267 | out.indent(); |
| 268 | |
Andreas Huber | 8a82ff7 | 2016-08-04 10:29:39 -0700 | [diff] [blame] | 269 | out << "::android::hardware::Parcel *parcel,\n" |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 270 | << "size_t parentHandle,\n" |
| 271 | << "size_t parentOffset) const;\n"; |
| 272 | |
| 273 | out.unindent(); |
| 274 | out.unindent(); |
| 275 | } |
| 276 | |
| 277 | out.unindent(); |
| 278 | out << "};\n\n"; |
| 279 | |
| 280 | return OK; |
| 281 | } |
| 282 | |
| 283 | status_t CompoundType::emitTypeDefinitions( |
| 284 | Formatter &out, const std::string prefix) const { |
Andreas Huber | 0e00de4 | 2016-08-03 09:56:02 -0700 | [diff] [blame] | 285 | status_t err = Scope::emitTypeDefinitions(out, prefix + "::" + localName()); |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 286 | |
| 287 | if (err != OK) { |
| 288 | return err; |
| 289 | } |
| 290 | |
| 291 | if (!needsEmbeddedReadWrite()) { |
| 292 | return OK; |
| 293 | } |
| 294 | |
| 295 | emitStructReaderWriter(out, prefix, true /* isReader */); |
| 296 | emitStructReaderWriter(out, prefix, false /* isReader */); |
| 297 | |
| 298 | return OK; |
| 299 | } |
| 300 | |
Andreas Huber | 85eabdb | 2016-08-25 11:24:49 -0700 | [diff] [blame] | 301 | status_t CompoundType::emitJavaTypeDeclarations( |
| 302 | Formatter &out, bool atTopLevel) const { |
| 303 | out << "public final "; |
| 304 | |
| 305 | if (!atTopLevel) { |
| 306 | out << "static "; |
| 307 | } |
| 308 | |
| 309 | out << "class " |
| 310 | << localName() |
| 311 | << " {\n"; |
| 312 | |
| 313 | out.indent(); |
| 314 | |
| 315 | Scope::emitJavaTypeDeclarations(out, false /* atTopLevel */); |
| 316 | |
| 317 | for (const auto &field : *mFields) { |
| 318 | const bool isScope = field->type().isScope(); // really isStruct... |
| 319 | |
| 320 | out << "public "; |
| 321 | |
| 322 | field->type().emitJavaFieldInitializer(out, field->name()); |
| 323 | } |
| 324 | |
| 325 | if (!mFields->empty()) { |
| 326 | out << "\n"; |
| 327 | } |
| 328 | |
| 329 | out << "public final void readFromParcel(HwParcel parcel) {\n"; |
| 330 | out.indent(); |
| 331 | out << "HwBlob blob = parcel.readBuffer();\n"; |
| 332 | out << "readEmbeddedFromParcel(parcel, blob, 0 /* parentOffset */);\n"; |
| 333 | out.unindent(); |
| 334 | out << "}\n\n"; |
| 335 | |
Andreas Huber | f630bc8 | 2016-09-09 14:52:25 -0700 | [diff] [blame] | 336 | //////////////////////////////////////////////////////////////////////////// |
| 337 | |
| 338 | out << "public static final " |
| 339 | << localName() |
| 340 | << "[] readArrayFromParcel(HwParcel parcel, int size) {\n"; |
| 341 | out.indent(); |
| 342 | |
| 343 | out << localName() |
| 344 | << "[] _hidl_array = new " |
| 345 | << localName() |
| 346 | << "[size];\n"; |
| 347 | |
| 348 | out << "HwBlob _hidl_blob = parcel.readBuffer();\n\n"; |
| 349 | |
| 350 | out << "for (int _hidl_index = 0; _hidl_index < size; ++_hidl_index) {\n"; |
| 351 | out.indent(); |
| 352 | |
| 353 | out << "_hidl_array[_hidl_index] = new " |
| 354 | << localName() |
| 355 | << "();\n"; |
| 356 | |
| 357 | size_t structAlign, structSize; |
| 358 | getAlignmentAndSize(&structAlign, &structSize); |
| 359 | |
| 360 | out << "_hidl_array[_hidl_index].readEmbeddedFromParcel(\n"; |
| 361 | out.indent(); |
| 362 | out.indent(); |
| 363 | out << "parcel, _hidl_blob, _hidl_index * " |
| 364 | << structSize |
| 365 | << " /* parentOffset */);\n"; |
| 366 | |
| 367 | out.unindent(); |
| 368 | out.unindent(); |
| 369 | out.unindent(); |
| 370 | |
| 371 | out << "}\nreturn _hidl_array;\n"; |
| 372 | |
| 373 | out.unindent(); |
| 374 | out << "}\n\n"; |
| 375 | |
| 376 | //////////////////////////////////////////////////////////////////////////// |
| 377 | |
| 378 | out << "public static final " |
| 379 | << localName() |
| 380 | << "[] readVectorFromParcel(HwParcel parcel) {\n"; |
| 381 | out.indent(); |
| 382 | |
| 383 | out << "Vector<" |
| 384 | << localName() |
| 385 | << "> _hidl_vec = new Vector();\n"; |
| 386 | |
| 387 | out << "HwBlob _hidl_blob = parcel.readBuffer();\n\n"; |
| 388 | |
| 389 | VectorType::EmitJavaFieldReaderWriterForElementType( |
| 390 | out, this, "_hidl_blob", "_hidl_vec", "0", true /* isReader */); |
| 391 | |
| 392 | out << "\nreturn _hidl_vec.toArray(new " |
| 393 | << localName() |
| 394 | << "[_hidl_vec.size()]);\n"; |
| 395 | |
| 396 | out.unindent(); |
| 397 | out << "}\n\n"; |
| 398 | |
| 399 | //////////////////////////////////////////////////////////////////////////// |
| 400 | |
Andreas Huber | 85eabdb | 2016-08-25 11:24:49 -0700 | [diff] [blame] | 401 | out << "public final void readEmbeddedFromParcel(\n"; |
| 402 | out.indent(); |
| 403 | out.indent(); |
| 404 | out << "HwParcel parcel, HwBlob _hidl_blob, long _hidl_offset) {\n"; |
| 405 | out.unindent(); |
| 406 | |
| 407 | size_t offset = 0; |
| 408 | for (const auto &field : *mFields) { |
| 409 | size_t fieldAlign, fieldSize; |
| 410 | field->type().getAlignmentAndSize(&fieldAlign, &fieldSize); |
| 411 | |
| 412 | size_t pad = offset % fieldAlign; |
| 413 | if (pad > 0) { |
| 414 | offset += fieldAlign - pad; |
| 415 | } |
| 416 | |
| 417 | field->type().emitJavaFieldReaderWriter( |
| 418 | out, |
| 419 | "_hidl_blob", |
| 420 | field->name(), |
| 421 | "_hidl_offset + " + std::to_string(offset), |
| 422 | true /* isReader */); |
| 423 | |
| 424 | offset += fieldSize; |
| 425 | } |
| 426 | |
| 427 | out.unindent(); |
| 428 | out << "}\n\n"; |
| 429 | |
Andreas Huber | f630bc8 | 2016-09-09 14:52:25 -0700 | [diff] [blame] | 430 | //////////////////////////////////////////////////////////////////////////// |
| 431 | |
Andreas Huber | 85eabdb | 2016-08-25 11:24:49 -0700 | [diff] [blame] | 432 | out << "public final void writeToParcel(HwParcel parcel) {\n"; |
| 433 | out.indent(); |
| 434 | |
Andreas Huber | 85eabdb | 2016-08-25 11:24:49 -0700 | [diff] [blame] | 435 | out << "HwBlob _hidl_blob = new HwBlob(" |
| 436 | << structSize |
| 437 | << " /* size */);\n"; |
| 438 | |
| 439 | out << "writeEmbeddedToBlob(_hidl_blob, 0 /* parentOffset */);\n" |
| 440 | << "parcel.writeBuffer(_hidl_blob);\n"; |
| 441 | |
| 442 | out.unindent(); |
| 443 | out << "}\n\n"; |
| 444 | |
Andreas Huber | f630bc8 | 2016-09-09 14:52:25 -0700 | [diff] [blame] | 445 | //////////////////////////////////////////////////////////////////////////// |
| 446 | |
| 447 | out << "public static final void writeArrayToParcel(\n"; |
| 448 | out.indent(); |
| 449 | out.indent(); |
| 450 | out << "HwParcel parcel, int size, " |
| 451 | << localName() |
| 452 | << "[] _hidl_array) {\n"; |
| 453 | out.unindent(); |
| 454 | |
| 455 | out << "HwBlob _hidl_blob = new HwBlob(" |
| 456 | << "size * " |
| 457 | << structSize |
| 458 | << " /* size */);\n"; |
| 459 | |
| 460 | out << "for (int _hidl_index = 0; _hidl_index < size; ++_hidl_index) {\n"; |
| 461 | out.indent(); |
| 462 | |
| 463 | out << "_hidl_array[_hidl_index].writeEmbeddedToBlob(\n"; |
| 464 | out.indent(); |
| 465 | out.indent(); |
| 466 | out << "_hidl_blob, _hidl_index * " |
| 467 | << structSize |
| 468 | << " /* parentOffset */);\n"; |
| 469 | |
| 470 | out.unindent(); |
| 471 | out.unindent(); |
| 472 | out.unindent(); |
| 473 | |
| 474 | out << "}\nparcel.writeBuffer(_hidl_blob);\n"; |
| 475 | |
| 476 | out.unindent(); |
| 477 | out << "}\n\n"; |
| 478 | |
| 479 | //////////////////////////////////////////////////////////////////////////// |
| 480 | |
| 481 | out << "public static final void writeVectorToParcel(\n"; |
| 482 | out.indent(); |
| 483 | out.indent(); |
| 484 | out << "HwParcel parcel, " |
| 485 | << localName() |
| 486 | << "[] _hidl_array) {\n"; |
| 487 | out.unindent(); |
| 488 | |
| 489 | out << "Vector<" |
| 490 | << localName() |
| 491 | << "> _hidl_vec = new Vector(Arrays.asList(_hidl_array));\n"; |
| 492 | |
| 493 | out << "HwBlob _hidl_blob = new HwBlob(24 /* sizeof(hidl_vec<T>) */);\n"; |
| 494 | |
| 495 | VectorType::EmitJavaFieldReaderWriterForElementType( |
| 496 | out, this, "_hidl_blob", "_hidl_vec", "0", false /* isReader */); |
| 497 | |
| 498 | out << "\nparcel.writeBuffer(_hidl_blob);\n"; |
| 499 | |
| 500 | out.unindent(); |
| 501 | out << "}\n\n"; |
| 502 | |
| 503 | //////////////////////////////////////////////////////////////////////////// |
| 504 | |
Andreas Huber | 85eabdb | 2016-08-25 11:24:49 -0700 | [diff] [blame] | 505 | out << "public final void writeEmbeddedToBlob(\n"; |
| 506 | out.indent(); |
| 507 | out.indent(); |
| 508 | out << "HwBlob _hidl_blob, long _hidl_offset) {\n"; |
| 509 | out.unindent(); |
| 510 | |
| 511 | offset = 0; |
| 512 | for (const auto &field : *mFields) { |
| 513 | size_t fieldAlign, fieldSize; |
| 514 | field->type().getAlignmentAndSize(&fieldAlign, &fieldSize); |
| 515 | |
| 516 | size_t pad = offset % fieldAlign; |
| 517 | if (pad > 0) { |
| 518 | offset += fieldAlign - pad; |
| 519 | } |
| 520 | |
| 521 | field->type().emitJavaFieldReaderWriter( |
| 522 | out, |
| 523 | "_hidl_blob", |
| 524 | field->name(), |
| 525 | "_hidl_offset + " + std::to_string(offset), |
| 526 | false /* isReader */); |
| 527 | |
| 528 | offset += fieldSize; |
| 529 | } |
| 530 | |
| 531 | out.unindent(); |
| 532 | out << "}\n"; |
| 533 | |
| 534 | out.unindent(); |
| 535 | out << "};\n\n"; |
| 536 | |
| 537 | return OK; |
| 538 | } |
| 539 | |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 540 | void CompoundType::emitStructReaderWriter( |
| 541 | Formatter &out, const std::string &prefix, bool isReader) const { |
| 542 | out << "::android::status_t " |
| 543 | << (prefix.empty() ? "" : (prefix + "::")) |
Andreas Huber | 0e00de4 | 2016-08-03 09:56:02 -0700 | [diff] [blame] | 544 | << localName() |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 545 | << (isReader ? "::readEmbeddedFromParcel" |
| 546 | : "::writeEmbeddedToParcel") |
| 547 | << "(\n"; |
| 548 | |
| 549 | out.indent(); |
| 550 | out.indent(); |
| 551 | |
| 552 | if (isReader) { |
Andreas Huber | 8a82ff7 | 2016-08-04 10:29:39 -0700 | [diff] [blame] | 553 | out << "const ::android::hardware::Parcel &parcel,\n"; |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 554 | } else { |
Andreas Huber | 8a82ff7 | 2016-08-04 10:29:39 -0700 | [diff] [blame] | 555 | out << "::android::hardware::Parcel *parcel,\n"; |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 556 | } |
| 557 | |
| 558 | out << "size_t parentHandle,\n" |
| 559 | << "size_t parentOffset)"; |
| 560 | |
| 561 | if (!isReader) { |
| 562 | out << " const"; |
| 563 | } |
| 564 | |
| 565 | out << " {\n"; |
| 566 | |
| 567 | out.unindent(); |
| 568 | out.unindent(); |
| 569 | out.indent(); |
| 570 | |
Iliyan Malchev | 549e259 | 2016-08-10 08:59:12 -0700 | [diff] [blame] | 571 | out << "::android::status_t _hidl_err = ::android::OK;\n\n"; |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 572 | |
| 573 | for (const auto &field : *mFields) { |
| 574 | if (!field->type().needsEmbeddedReadWrite()) { |
| 575 | continue; |
| 576 | } |
| 577 | |
| 578 | field->type().emitReaderWriterEmbedded( |
| 579 | out, |
| 580 | field->name(), |
| 581 | false /* nameIsPointer */, |
| 582 | "parcel", |
| 583 | !isReader /* parcelObjIsPointer */, |
| 584 | isReader, |
Andreas Huber | 737080b | 2016-08-02 15:38:04 -0700 | [diff] [blame] | 585 | ErrorMode_Return, |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 586 | "parentHandle", |
Andreas Huber | 0e00de4 | 2016-08-03 09:56:02 -0700 | [diff] [blame] | 587 | "parentOffset + offsetof(" |
| 588 | + fullName() |
| 589 | + ", " |
| 590 | + field->name() |
| 591 | + ")"); |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 592 | } |
| 593 | |
| 594 | out.unindent(); |
Iliyan Malchev | 549e259 | 2016-08-10 08:59:12 -0700 | [diff] [blame] | 595 | out << "_hidl_error:\n"; |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 596 | out.indent(); |
Iliyan Malchev | 549e259 | 2016-08-10 08:59:12 -0700 | [diff] [blame] | 597 | out << "return _hidl_err;\n"; |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 598 | |
| 599 | out.unindent(); |
| 600 | out << "}\n\n"; |
| 601 | } |
| 602 | |
| 603 | bool CompoundType::needsEmbeddedReadWrite() const { |
| 604 | if (mStyle != STYLE_STRUCT) { |
| 605 | return false; |
| 606 | } |
| 607 | |
| 608 | for (const auto &field : *mFields) { |
| 609 | if (field->type().needsEmbeddedReadWrite()) { |
| 610 | return true; |
| 611 | } |
| 612 | } |
| 613 | |
| 614 | return false; |
| 615 | } |
| 616 | |
| 617 | bool CompoundType::resultNeedsDeref() const { |
| 618 | return true; |
| 619 | } |
| 620 | |
Zhuoyao Zhang | 5158db4 | 2016-08-10 10:25:20 -0700 | [diff] [blame] | 621 | status_t CompoundType::emitVtsTypeDeclarations(Formatter &out) const { |
| 622 | out << "name: \"" << localName() << "\"\n"; |
| 623 | switch (mStyle) { |
| 624 | case STYLE_STRUCT: |
| 625 | { |
Zhuoyao Zhang | 864c771 | 2016-08-16 15:35:28 -0700 | [diff] [blame] | 626 | out << "type: TYPE_STRUCT\n"; |
Zhuoyao Zhang | 5158db4 | 2016-08-10 10:25:20 -0700 | [diff] [blame] | 627 | break; |
| 628 | } |
| 629 | case STYLE_UNION: |
| 630 | { |
Zhuoyao Zhang | 864c771 | 2016-08-16 15:35:28 -0700 | [diff] [blame] | 631 | out << "type: TYPE_UNION\n"; |
Zhuoyao Zhang | 5158db4 | 2016-08-10 10:25:20 -0700 | [diff] [blame] | 632 | break; |
| 633 | } |
| 634 | default: |
| 635 | break; |
| 636 | } |
Zhuoyao Zhang | 864c771 | 2016-08-16 15:35:28 -0700 | [diff] [blame] | 637 | |
| 638 | // Emit declaration for each subtype. |
| 639 | for (const auto &type : getSubTypes()) { |
| 640 | switch (mStyle) { |
| 641 | case STYLE_STRUCT: |
| 642 | { |
| 643 | out << "struct_value: {\n"; |
| 644 | break; |
| 645 | } |
| 646 | case STYLE_UNION: |
| 647 | { |
| 648 | out << "union_value: {\n"; |
| 649 | break; |
| 650 | } |
| 651 | default: |
| 652 | break; |
| 653 | } |
| 654 | out.indent(); |
| 655 | status_t status(type->emitVtsTypeDeclarations(out)); |
Zhuoyao Zhang | 5158db4 | 2016-08-10 10:25:20 -0700 | [diff] [blame] | 656 | if (status != OK) { |
| 657 | return status; |
| 658 | } |
Zhuoyao Zhang | 864c771 | 2016-08-16 15:35:28 -0700 | [diff] [blame] | 659 | out.unindent(); |
| 660 | out << "}\n"; |
Zhuoyao Zhang | 5158db4 | 2016-08-10 10:25:20 -0700 | [diff] [blame] | 661 | } |
Zhuoyao Zhang | 864c771 | 2016-08-16 15:35:28 -0700 | [diff] [blame] | 662 | |
| 663 | // Emit declaration for each field. |
| 664 | for (const auto &field : *mFields) { |
| 665 | switch (mStyle) { |
| 666 | case STYLE_STRUCT: |
| 667 | { |
| 668 | out << "struct_value: {\n"; |
| 669 | break; |
| 670 | } |
| 671 | case STYLE_UNION: |
| 672 | { |
| 673 | out << "union_value: {\n"; |
| 674 | break; |
| 675 | } |
| 676 | default: |
| 677 | break; |
| 678 | } |
| 679 | out.indent(); |
| 680 | out << "name: \"" << field->name() << "\"\n"; |
| 681 | status_t status = field->type().emitVtsAttributeType(out); |
| 682 | if (status != OK) { |
| 683 | return status; |
| 684 | } |
| 685 | out.unindent(); |
| 686 | out << "}\n"; |
| 687 | } |
Zhuoyao Zhang | 5158db4 | 2016-08-10 10:25:20 -0700 | [diff] [blame] | 688 | |
| 689 | return OK; |
| 690 | } |
| 691 | |
Zhuoyao Zhang | 864c771 | 2016-08-16 15:35:28 -0700 | [diff] [blame] | 692 | status_t CompoundType::emitVtsAttributeType(Formatter &out) const { |
Zhuoyao Zhang | 5158db4 | 2016-08-10 10:25:20 -0700 | [diff] [blame] | 693 | switch (mStyle) { |
| 694 | case STYLE_STRUCT: |
| 695 | { |
| 696 | out << "type: TYPE_STRUCT\n"; |
| 697 | break; |
| 698 | } |
| 699 | case STYLE_UNION: |
| 700 | { |
| 701 | out << "type: TYPE_UNION\n"; |
| 702 | break; |
| 703 | } |
| 704 | default: |
| 705 | break; |
| 706 | } |
| 707 | out << "predefined_type: \"" << localName() << "\"\n"; |
| 708 | return OK; |
| 709 | } |
| 710 | |
Andreas Huber | 70a59e1 | 2016-08-16 12:57:01 -0700 | [diff] [blame] | 711 | bool CompoundType::isJavaCompatible() const { |
Andreas Huber | 0fa9e39 | 2016-08-31 09:05:44 -0700 | [diff] [blame] | 712 | if (mStyle != STYLE_STRUCT || !Scope::isJavaCompatible()) { |
| 713 | return false; |
| 714 | } |
| 715 | |
| 716 | for (const auto &field : *mFields) { |
| 717 | if (!field->type().isJavaCompatible()) { |
| 718 | return false; |
| 719 | } |
| 720 | } |
| 721 | |
| 722 | return true; |
Andreas Huber | 85eabdb | 2016-08-25 11:24:49 -0700 | [diff] [blame] | 723 | } |
| 724 | |
| 725 | void CompoundType::getAlignmentAndSize(size_t *align, size_t *size) const { |
| 726 | *align = 1; |
| 727 | |
| 728 | size_t offset = 0; |
| 729 | for (const auto &field : *mFields) { |
| 730 | // Each field is aligned according to its alignment requirement. |
| 731 | // The surrounding structure's alignment is the maximum of its |
| 732 | // fields' aligments. |
| 733 | |
| 734 | size_t fieldAlign, fieldSize; |
| 735 | field->type().getAlignmentAndSize(&fieldAlign, &fieldSize); |
| 736 | |
| 737 | size_t pad = offset % fieldAlign; |
| 738 | if (pad > 0) { |
| 739 | offset += fieldAlign - pad; |
| 740 | } |
| 741 | |
| 742 | offset += fieldSize; |
| 743 | |
| 744 | if (fieldAlign > (*align)) { |
| 745 | *align = fieldAlign; |
| 746 | } |
| 747 | } |
| 748 | |
| 749 | // Final padding to account for the structure's alignment. |
| 750 | size_t pad = offset % (*align); |
| 751 | if (pad > 0) { |
| 752 | offset += (*align) - pad; |
| 753 | } |
| 754 | |
| 755 | *size = offset; |
Andreas Huber | 70a59e1 | 2016-08-16 12:57:01 -0700 | [diff] [blame] | 756 | } |
| 757 | |
Andreas Huber | 31629bc | 2016-08-03 09:06:40 -0700 | [diff] [blame] | 758 | //////////////////////////////////////////////////////////////////////////////// |
| 759 | |
| 760 | CompoundField::CompoundField(const char *name, Type *type) |
| 761 | : mName(name), |
| 762 | mType(type) { |
| 763 | } |
| 764 | |
| 765 | std::string CompoundField::name() const { |
| 766 | return mName; |
| 767 | } |
| 768 | |
| 769 | const Type &CompoundField::type() const { |
| 770 | return *mType; |
| 771 | } |
| 772 | |
Andreas Huber | c9410c7 | 2016-07-28 12:18:40 -0700 | [diff] [blame] | 773 | } // namespace android |
| 774 | |