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 | 4c865b7 | 2016-09-14 15:26:27 -0700 | [diff] [blame] | 85 | std::string CompoundType::getJavaType( |
| 86 | std::string *extra, bool /* forInitializer */) const { |
| 87 | extra->clear(); |
Andreas Huber | 85eabdb | 2016-08-25 11:24:49 -0700 | [diff] [blame] | 88 | return fullJavaName(); |
| 89 | } |
| 90 | |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 91 | void CompoundType::emitReaderWriter( |
| 92 | Formatter &out, |
| 93 | const std::string &name, |
| 94 | const std::string &parcelObj, |
| 95 | bool parcelObjIsPointer, |
| 96 | bool isReader, |
| 97 | ErrorMode mode) const { |
Iliyan Malchev | 549e259 | 2016-08-10 08:59:12 -0700 | [diff] [blame] | 98 | const std::string parentName = "_hidl_" + name + "_parent"; |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 99 | |
| 100 | out << "size_t " << parentName << ";\n\n"; |
| 101 | |
| 102 | const std::string parcelObjDeref = |
| 103 | parcelObj + (parcelObjIsPointer ? "->" : "."); |
| 104 | |
| 105 | if (isReader) { |
| 106 | out << name |
| 107 | << " = (const " |
Andreas Huber | 0e00de4 | 2016-08-03 09:56:02 -0700 | [diff] [blame] | 108 | << fullName() |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 109 | << " *)" |
| 110 | << parcelObjDeref |
| 111 | << "readBuffer(" |
| 112 | << "&" |
| 113 | << parentName |
| 114 | << ");\n"; |
| 115 | |
| 116 | out << "if (" |
| 117 | << name |
| 118 | << " == nullptr) {\n"; |
| 119 | |
| 120 | out.indent(); |
| 121 | |
Iliyan Malchev | 549e259 | 2016-08-10 08:59:12 -0700 | [diff] [blame] | 122 | out << "_hidl_err = ::android::UNKNOWN_ERROR;\n"; |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 123 | handleError2(out, mode); |
| 124 | |
| 125 | out.unindent(); |
| 126 | out << "}\n\n"; |
| 127 | } else { |
Iliyan Malchev | 549e259 | 2016-08-10 08:59:12 -0700 | [diff] [blame] | 128 | out << "_hidl_err = " |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 129 | << parcelObjDeref |
| 130 | << "writeBuffer(&" |
| 131 | << name |
| 132 | << ", sizeof(" |
| 133 | << name |
| 134 | << "), &" |
| 135 | << parentName |
| 136 | << ");\n"; |
| 137 | |
| 138 | handleError(out, mode); |
| 139 | } |
| 140 | |
| 141 | if (mStyle != STYLE_STRUCT || !needsEmbeddedReadWrite()) { |
| 142 | return; |
| 143 | } |
| 144 | |
| 145 | emitReaderWriterEmbedded( |
| 146 | out, |
Andreas Huber | f9d49f1 | 2016-09-12 14:58:36 -0700 | [diff] [blame] | 147 | 0 /* depth */, |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 148 | name, |
| 149 | isReader /* nameIsPointer */, |
| 150 | parcelObj, |
| 151 | parcelObjIsPointer, |
| 152 | isReader, |
| 153 | mode, |
| 154 | parentName, |
| 155 | "0 /* parentOffset */"); |
| 156 | } |
| 157 | |
| 158 | void CompoundType::emitReaderWriterEmbedded( |
| 159 | Formatter &out, |
Andreas Huber | f9d49f1 | 2016-09-12 14:58:36 -0700 | [diff] [blame] | 160 | size_t /* depth */, |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 161 | const std::string &name, |
| 162 | bool nameIsPointer, |
| 163 | const std::string &parcelObj, |
| 164 | bool parcelObjIsPointer, |
| 165 | bool isReader, |
| 166 | ErrorMode mode, |
| 167 | const std::string &parentName, |
| 168 | const std::string &offsetText) const { |
| 169 | emitReaderWriterEmbeddedForTypeName( |
| 170 | out, |
| 171 | name, |
| 172 | nameIsPointer, |
| 173 | parcelObj, |
| 174 | parcelObjIsPointer, |
| 175 | isReader, |
| 176 | mode, |
| 177 | parentName, |
| 178 | offsetText, |
Andreas Huber | 0e00de4 | 2016-08-03 09:56:02 -0700 | [diff] [blame] | 179 | fullName(), |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 180 | "" /* childName */); |
| 181 | } |
| 182 | |
Andreas Huber | 85eabdb | 2016-08-25 11:24:49 -0700 | [diff] [blame] | 183 | void CompoundType::emitJavaReaderWriter( |
| 184 | Formatter &out, |
| 185 | const std::string &parcelObj, |
| 186 | const std::string &argName, |
| 187 | bool isReader) const { |
| 188 | if (isReader) { |
| 189 | out << "new " << fullJavaName() << "();\n"; |
| 190 | } |
| 191 | |
| 192 | out << argName |
| 193 | << "." |
| 194 | << (isReader ? "readFromParcel" : "writeToParcel") |
| 195 | << "(" |
| 196 | << parcelObj |
| 197 | << ");\n"; |
| 198 | } |
| 199 | |
| 200 | void CompoundType::emitJavaFieldInitializer( |
| 201 | Formatter &out, const std::string &fieldName) const { |
| 202 | out << "final " |
| 203 | << fullJavaName() |
| 204 | << " " |
| 205 | << fieldName |
| 206 | << " = new " |
| 207 | << fullJavaName() |
| 208 | << "();\n"; |
| 209 | } |
| 210 | |
| 211 | void CompoundType::emitJavaFieldReaderWriter( |
| 212 | Formatter &out, |
Andreas Huber | 4c865b7 | 2016-09-14 15:26:27 -0700 | [diff] [blame] | 213 | size_t /* depth */, |
Andreas Huber | 709b62d | 2016-09-19 11:21:18 -0700 | [diff] [blame] | 214 | const std::string &parcelName, |
Andreas Huber | 85eabdb | 2016-08-25 11:24:49 -0700 | [diff] [blame] | 215 | const std::string &blobName, |
| 216 | const std::string &fieldName, |
| 217 | const std::string &offset, |
| 218 | bool isReader) const { |
| 219 | if (isReader) { |
| 220 | out << fieldName |
Andreas Huber | 709b62d | 2016-09-19 11:21:18 -0700 | [diff] [blame] | 221 | << ".readEmbeddedFromParcel(" |
| 222 | << parcelName |
| 223 | << ", " |
Andreas Huber | 85eabdb | 2016-08-25 11:24:49 -0700 | [diff] [blame] | 224 | << blobName |
| 225 | << ", " |
| 226 | << offset |
| 227 | << ");\n"; |
| 228 | |
| 229 | return; |
| 230 | } |
| 231 | |
| 232 | out << fieldName |
| 233 | << ".writeEmbeddedToBlob(" |
| 234 | << blobName |
| 235 | << ", " |
| 236 | << offset |
| 237 | << ");\n"; |
| 238 | } |
| 239 | |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 240 | status_t CompoundType::emitTypeDeclarations(Formatter &out) const { |
| 241 | out << ((mStyle == STYLE_STRUCT) ? "struct" : "union") |
| 242 | << " " |
Andreas Huber | 0e00de4 | 2016-08-03 09:56:02 -0700 | [diff] [blame] | 243 | << localName() |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 244 | << " {\n"; |
| 245 | |
| 246 | out.indent(); |
| 247 | |
| 248 | Scope::emitTypeDeclarations(out); |
| 249 | |
| 250 | for (const auto &field : *mFields) { |
| 251 | std::string extra; |
| 252 | out << field->type().getCppType(&extra) |
| 253 | << " " |
| 254 | << field->name() |
| 255 | << extra |
| 256 | << ";\n"; |
| 257 | } |
| 258 | |
| 259 | if (needsEmbeddedReadWrite()) { |
| 260 | out << "\n::android::status_t readEmbeddedFromParcel(\n"; |
| 261 | |
| 262 | out.indent(); |
| 263 | out.indent(); |
| 264 | |
Andreas Huber | 8a82ff7 | 2016-08-04 10:29:39 -0700 | [diff] [blame] | 265 | out << "const ::android::hardware::Parcel &parcel,\n" |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 266 | << "size_t parentHandle,\n" |
| 267 | << "size_t parentOffset);\n\n"; |
| 268 | |
| 269 | out.unindent(); |
| 270 | out.unindent(); |
| 271 | |
| 272 | out << "::android::status_t writeEmbeddedToParcel(\n"; |
| 273 | |
| 274 | out.indent(); |
| 275 | out.indent(); |
| 276 | |
Andreas Huber | 8a82ff7 | 2016-08-04 10:29:39 -0700 | [diff] [blame] | 277 | out << "::android::hardware::Parcel *parcel,\n" |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 278 | << "size_t parentHandle,\n" |
| 279 | << "size_t parentOffset) const;\n"; |
| 280 | |
| 281 | out.unindent(); |
| 282 | out.unindent(); |
| 283 | } |
| 284 | |
| 285 | out.unindent(); |
| 286 | out << "};\n\n"; |
| 287 | |
| 288 | return OK; |
| 289 | } |
| 290 | |
| 291 | status_t CompoundType::emitTypeDefinitions( |
| 292 | Formatter &out, const std::string prefix) const { |
Andreas Huber | 0e00de4 | 2016-08-03 09:56:02 -0700 | [diff] [blame] | 293 | status_t err = Scope::emitTypeDefinitions(out, prefix + "::" + localName()); |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 294 | |
| 295 | if (err != OK) { |
| 296 | return err; |
| 297 | } |
| 298 | |
| 299 | if (!needsEmbeddedReadWrite()) { |
| 300 | return OK; |
| 301 | } |
| 302 | |
| 303 | emitStructReaderWriter(out, prefix, true /* isReader */); |
| 304 | emitStructReaderWriter(out, prefix, false /* isReader */); |
| 305 | |
| 306 | return OK; |
| 307 | } |
| 308 | |
Andreas Huber | 85eabdb | 2016-08-25 11:24:49 -0700 | [diff] [blame] | 309 | status_t CompoundType::emitJavaTypeDeclarations( |
| 310 | Formatter &out, bool atTopLevel) const { |
| 311 | out << "public final "; |
| 312 | |
| 313 | if (!atTopLevel) { |
| 314 | out << "static "; |
| 315 | } |
| 316 | |
| 317 | out << "class " |
| 318 | << localName() |
| 319 | << " {\n"; |
| 320 | |
| 321 | out.indent(); |
| 322 | |
| 323 | Scope::emitJavaTypeDeclarations(out, false /* atTopLevel */); |
| 324 | |
| 325 | for (const auto &field : *mFields) { |
| 326 | const bool isScope = field->type().isScope(); // really isStruct... |
| 327 | |
| 328 | out << "public "; |
| 329 | |
| 330 | field->type().emitJavaFieldInitializer(out, field->name()); |
| 331 | } |
| 332 | |
| 333 | if (!mFields->empty()) { |
| 334 | out << "\n"; |
| 335 | } |
| 336 | |
| 337 | out << "public final void readFromParcel(HwParcel parcel) {\n"; |
| 338 | out.indent(); |
| 339 | out << "HwBlob blob = parcel.readBuffer();\n"; |
| 340 | out << "readEmbeddedFromParcel(parcel, blob, 0 /* parentOffset */);\n"; |
| 341 | out.unindent(); |
| 342 | out << "}\n\n"; |
| 343 | |
Andreas Huber | f630bc8 | 2016-09-09 14:52:25 -0700 | [diff] [blame] | 344 | //////////////////////////////////////////////////////////////////////////// |
| 345 | |
| 346 | out << "public static final " |
| 347 | << localName() |
Andreas Huber | f630bc8 | 2016-09-09 14:52:25 -0700 | [diff] [blame] | 348 | << "[] readVectorFromParcel(HwParcel parcel) {\n"; |
| 349 | out.indent(); |
| 350 | |
| 351 | out << "Vector<" |
| 352 | << localName() |
| 353 | << "> _hidl_vec = new Vector();\n"; |
| 354 | |
| 355 | out << "HwBlob _hidl_blob = parcel.readBuffer();\n\n"; |
| 356 | |
| 357 | VectorType::EmitJavaFieldReaderWriterForElementType( |
Andreas Huber | 4c865b7 | 2016-09-14 15:26:27 -0700 | [diff] [blame] | 358 | out, |
| 359 | 0 /* depth */, |
| 360 | this, |
Andreas Huber | 709b62d | 2016-09-19 11:21:18 -0700 | [diff] [blame] | 361 | "parcel", |
Andreas Huber | 4c865b7 | 2016-09-14 15:26:27 -0700 | [diff] [blame] | 362 | "_hidl_blob", |
| 363 | "_hidl_vec", |
| 364 | "0", |
| 365 | true /* isReader */); |
Andreas Huber | f630bc8 | 2016-09-09 14:52:25 -0700 | [diff] [blame] | 366 | |
| 367 | out << "\nreturn _hidl_vec.toArray(new " |
| 368 | << localName() |
| 369 | << "[_hidl_vec.size()]);\n"; |
| 370 | |
| 371 | out.unindent(); |
| 372 | out << "}\n\n"; |
| 373 | |
| 374 | //////////////////////////////////////////////////////////////////////////// |
| 375 | |
Andreas Huber | 85eabdb | 2016-08-25 11:24:49 -0700 | [diff] [blame] | 376 | out << "public final void readEmbeddedFromParcel(\n"; |
| 377 | out.indent(); |
| 378 | out.indent(); |
| 379 | out << "HwParcel parcel, HwBlob _hidl_blob, long _hidl_offset) {\n"; |
| 380 | out.unindent(); |
| 381 | |
| 382 | size_t offset = 0; |
| 383 | for (const auto &field : *mFields) { |
| 384 | size_t fieldAlign, fieldSize; |
| 385 | field->type().getAlignmentAndSize(&fieldAlign, &fieldSize); |
| 386 | |
| 387 | size_t pad = offset % fieldAlign; |
| 388 | if (pad > 0) { |
| 389 | offset += fieldAlign - pad; |
| 390 | } |
| 391 | |
| 392 | field->type().emitJavaFieldReaderWriter( |
| 393 | out, |
Andreas Huber | 4c865b7 | 2016-09-14 15:26:27 -0700 | [diff] [blame] | 394 | 0 /* depth */, |
Andreas Huber | 709b62d | 2016-09-19 11:21:18 -0700 | [diff] [blame] | 395 | "parcel", |
Andreas Huber | 85eabdb | 2016-08-25 11:24:49 -0700 | [diff] [blame] | 396 | "_hidl_blob", |
| 397 | field->name(), |
| 398 | "_hidl_offset + " + std::to_string(offset), |
| 399 | true /* isReader */); |
| 400 | |
| 401 | offset += fieldSize; |
| 402 | } |
| 403 | |
| 404 | out.unindent(); |
| 405 | out << "}\n\n"; |
| 406 | |
Andreas Huber | f630bc8 | 2016-09-09 14:52:25 -0700 | [diff] [blame] | 407 | //////////////////////////////////////////////////////////////////////////// |
| 408 | |
Andreas Huber | 709b62d | 2016-09-19 11:21:18 -0700 | [diff] [blame] | 409 | size_t structAlign, structSize; |
| 410 | getAlignmentAndSize(&structAlign, &structSize); |
| 411 | |
Andreas Huber | 85eabdb | 2016-08-25 11:24:49 -0700 | [diff] [blame] | 412 | out << "public final void writeToParcel(HwParcel parcel) {\n"; |
| 413 | out.indent(); |
| 414 | |
Andreas Huber | 85eabdb | 2016-08-25 11:24:49 -0700 | [diff] [blame] | 415 | out << "HwBlob _hidl_blob = new HwBlob(" |
| 416 | << structSize |
| 417 | << " /* size */);\n"; |
| 418 | |
| 419 | out << "writeEmbeddedToBlob(_hidl_blob, 0 /* parentOffset */);\n" |
| 420 | << "parcel.writeBuffer(_hidl_blob);\n"; |
| 421 | |
| 422 | out.unindent(); |
| 423 | out << "}\n\n"; |
| 424 | |
Andreas Huber | f630bc8 | 2016-09-09 14:52:25 -0700 | [diff] [blame] | 425 | //////////////////////////////////////////////////////////////////////////// |
| 426 | |
Andreas Huber | f630bc8 | 2016-09-09 14:52:25 -0700 | [diff] [blame] | 427 | out << "public static final void writeVectorToParcel(\n"; |
| 428 | out.indent(); |
| 429 | out.indent(); |
| 430 | out << "HwParcel parcel, " |
| 431 | << localName() |
| 432 | << "[] _hidl_array) {\n"; |
| 433 | out.unindent(); |
| 434 | |
| 435 | out << "Vector<" |
| 436 | << localName() |
| 437 | << "> _hidl_vec = new Vector(Arrays.asList(_hidl_array));\n"; |
| 438 | |
| 439 | out << "HwBlob _hidl_blob = new HwBlob(24 /* sizeof(hidl_vec<T>) */);\n"; |
| 440 | |
| 441 | VectorType::EmitJavaFieldReaderWriterForElementType( |
Andreas Huber | 4c865b7 | 2016-09-14 15:26:27 -0700 | [diff] [blame] | 442 | out, |
| 443 | 0 /* depth */, |
| 444 | this, |
Andreas Huber | 709b62d | 2016-09-19 11:21:18 -0700 | [diff] [blame] | 445 | "parcel", |
Andreas Huber | 4c865b7 | 2016-09-14 15:26:27 -0700 | [diff] [blame] | 446 | "_hidl_blob", |
| 447 | "_hidl_vec", |
| 448 | "0", |
| 449 | false /* isReader */); |
Andreas Huber | f630bc8 | 2016-09-09 14:52:25 -0700 | [diff] [blame] | 450 | |
| 451 | out << "\nparcel.writeBuffer(_hidl_blob);\n"; |
| 452 | |
| 453 | out.unindent(); |
| 454 | out << "}\n\n"; |
| 455 | |
| 456 | //////////////////////////////////////////////////////////////////////////// |
| 457 | |
Andreas Huber | 85eabdb | 2016-08-25 11:24:49 -0700 | [diff] [blame] | 458 | out << "public final void writeEmbeddedToBlob(\n"; |
| 459 | out.indent(); |
| 460 | out.indent(); |
| 461 | out << "HwBlob _hidl_blob, long _hidl_offset) {\n"; |
| 462 | out.unindent(); |
| 463 | |
| 464 | offset = 0; |
| 465 | for (const auto &field : *mFields) { |
| 466 | size_t fieldAlign, fieldSize; |
| 467 | field->type().getAlignmentAndSize(&fieldAlign, &fieldSize); |
| 468 | |
| 469 | size_t pad = offset % fieldAlign; |
| 470 | if (pad > 0) { |
| 471 | offset += fieldAlign - pad; |
| 472 | } |
| 473 | |
| 474 | field->type().emitJavaFieldReaderWriter( |
| 475 | out, |
Andreas Huber | 4c865b7 | 2016-09-14 15:26:27 -0700 | [diff] [blame] | 476 | 0 /* depth */, |
Andreas Huber | 709b62d | 2016-09-19 11:21:18 -0700 | [diff] [blame] | 477 | "parcel", |
Andreas Huber | 85eabdb | 2016-08-25 11:24:49 -0700 | [diff] [blame] | 478 | "_hidl_blob", |
| 479 | field->name(), |
| 480 | "_hidl_offset + " + std::to_string(offset), |
| 481 | false /* isReader */); |
| 482 | |
| 483 | offset += fieldSize; |
| 484 | } |
| 485 | |
| 486 | out.unindent(); |
| 487 | out << "}\n"; |
| 488 | |
| 489 | out.unindent(); |
| 490 | out << "};\n\n"; |
| 491 | |
| 492 | return OK; |
| 493 | } |
| 494 | |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 495 | void CompoundType::emitStructReaderWriter( |
| 496 | Formatter &out, const std::string &prefix, bool isReader) const { |
| 497 | out << "::android::status_t " |
| 498 | << (prefix.empty() ? "" : (prefix + "::")) |
Andreas Huber | 0e00de4 | 2016-08-03 09:56:02 -0700 | [diff] [blame] | 499 | << localName() |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 500 | << (isReader ? "::readEmbeddedFromParcel" |
| 501 | : "::writeEmbeddedToParcel") |
| 502 | << "(\n"; |
| 503 | |
| 504 | out.indent(); |
| 505 | out.indent(); |
| 506 | |
| 507 | if (isReader) { |
Andreas Huber | 8a82ff7 | 2016-08-04 10:29:39 -0700 | [diff] [blame] | 508 | out << "const ::android::hardware::Parcel &parcel,\n"; |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 509 | } else { |
Andreas Huber | 8a82ff7 | 2016-08-04 10:29:39 -0700 | [diff] [blame] | 510 | out << "::android::hardware::Parcel *parcel,\n"; |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 511 | } |
| 512 | |
| 513 | out << "size_t parentHandle,\n" |
| 514 | << "size_t parentOffset)"; |
| 515 | |
| 516 | if (!isReader) { |
| 517 | out << " const"; |
| 518 | } |
| 519 | |
| 520 | out << " {\n"; |
| 521 | |
| 522 | out.unindent(); |
| 523 | out.unindent(); |
| 524 | out.indent(); |
| 525 | |
Iliyan Malchev | 549e259 | 2016-08-10 08:59:12 -0700 | [diff] [blame] | 526 | out << "::android::status_t _hidl_err = ::android::OK;\n\n"; |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 527 | |
| 528 | for (const auto &field : *mFields) { |
| 529 | if (!field->type().needsEmbeddedReadWrite()) { |
| 530 | continue; |
| 531 | } |
| 532 | |
| 533 | field->type().emitReaderWriterEmbedded( |
| 534 | out, |
Andreas Huber | f9d49f1 | 2016-09-12 14:58:36 -0700 | [diff] [blame] | 535 | 0 /* depth */, |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 536 | field->name(), |
| 537 | false /* nameIsPointer */, |
| 538 | "parcel", |
| 539 | !isReader /* parcelObjIsPointer */, |
| 540 | isReader, |
Andreas Huber | 737080b | 2016-08-02 15:38:04 -0700 | [diff] [blame] | 541 | ErrorMode_Return, |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 542 | "parentHandle", |
Andreas Huber | 0e00de4 | 2016-08-03 09:56:02 -0700 | [diff] [blame] | 543 | "parentOffset + offsetof(" |
| 544 | + fullName() |
| 545 | + ", " |
| 546 | + field->name() |
| 547 | + ")"); |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 548 | } |
| 549 | |
| 550 | out.unindent(); |
Iliyan Malchev | 549e259 | 2016-08-10 08:59:12 -0700 | [diff] [blame] | 551 | out << "_hidl_error:\n"; |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 552 | out.indent(); |
Iliyan Malchev | 549e259 | 2016-08-10 08:59:12 -0700 | [diff] [blame] | 553 | out << "return _hidl_err;\n"; |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 554 | |
| 555 | out.unindent(); |
| 556 | out << "}\n\n"; |
| 557 | } |
| 558 | |
| 559 | bool CompoundType::needsEmbeddedReadWrite() const { |
| 560 | if (mStyle != STYLE_STRUCT) { |
| 561 | return false; |
| 562 | } |
| 563 | |
| 564 | for (const auto &field : *mFields) { |
| 565 | if (field->type().needsEmbeddedReadWrite()) { |
| 566 | return true; |
| 567 | } |
| 568 | } |
| 569 | |
| 570 | return false; |
| 571 | } |
| 572 | |
| 573 | bool CompoundType::resultNeedsDeref() const { |
| 574 | return true; |
| 575 | } |
| 576 | |
Zhuoyao Zhang | 5158db4 | 2016-08-10 10:25:20 -0700 | [diff] [blame] | 577 | status_t CompoundType::emitVtsTypeDeclarations(Formatter &out) const { |
| 578 | out << "name: \"" << localName() << "\"\n"; |
| 579 | switch (mStyle) { |
| 580 | case STYLE_STRUCT: |
| 581 | { |
Zhuoyao Zhang | 864c771 | 2016-08-16 15:35:28 -0700 | [diff] [blame] | 582 | out << "type: TYPE_STRUCT\n"; |
Zhuoyao Zhang | 5158db4 | 2016-08-10 10:25:20 -0700 | [diff] [blame] | 583 | break; |
| 584 | } |
| 585 | case STYLE_UNION: |
| 586 | { |
Zhuoyao Zhang | 864c771 | 2016-08-16 15:35:28 -0700 | [diff] [blame] | 587 | out << "type: TYPE_UNION\n"; |
Zhuoyao Zhang | 5158db4 | 2016-08-10 10:25:20 -0700 | [diff] [blame] | 588 | break; |
| 589 | } |
| 590 | default: |
| 591 | break; |
| 592 | } |
Zhuoyao Zhang | 864c771 | 2016-08-16 15:35:28 -0700 | [diff] [blame] | 593 | |
| 594 | // Emit declaration for each subtype. |
| 595 | for (const auto &type : getSubTypes()) { |
| 596 | switch (mStyle) { |
| 597 | case STYLE_STRUCT: |
| 598 | { |
| 599 | out << "struct_value: {\n"; |
| 600 | break; |
| 601 | } |
| 602 | case STYLE_UNION: |
| 603 | { |
| 604 | out << "union_value: {\n"; |
| 605 | break; |
| 606 | } |
| 607 | default: |
| 608 | break; |
| 609 | } |
| 610 | out.indent(); |
| 611 | status_t status(type->emitVtsTypeDeclarations(out)); |
Zhuoyao Zhang | 5158db4 | 2016-08-10 10:25:20 -0700 | [diff] [blame] | 612 | if (status != OK) { |
| 613 | return status; |
| 614 | } |
Zhuoyao Zhang | 864c771 | 2016-08-16 15:35:28 -0700 | [diff] [blame] | 615 | out.unindent(); |
| 616 | out << "}\n"; |
Zhuoyao Zhang | 5158db4 | 2016-08-10 10:25:20 -0700 | [diff] [blame] | 617 | } |
Zhuoyao Zhang | 864c771 | 2016-08-16 15:35:28 -0700 | [diff] [blame] | 618 | |
| 619 | // Emit declaration for each field. |
| 620 | for (const auto &field : *mFields) { |
| 621 | switch (mStyle) { |
| 622 | case STYLE_STRUCT: |
| 623 | { |
| 624 | out << "struct_value: {\n"; |
| 625 | break; |
| 626 | } |
| 627 | case STYLE_UNION: |
| 628 | { |
| 629 | out << "union_value: {\n"; |
| 630 | break; |
| 631 | } |
| 632 | default: |
| 633 | break; |
| 634 | } |
| 635 | out.indent(); |
| 636 | out << "name: \"" << field->name() << "\"\n"; |
| 637 | status_t status = field->type().emitVtsAttributeType(out); |
| 638 | if (status != OK) { |
| 639 | return status; |
| 640 | } |
| 641 | out.unindent(); |
| 642 | out << "}\n"; |
| 643 | } |
Zhuoyao Zhang | 5158db4 | 2016-08-10 10:25:20 -0700 | [diff] [blame] | 644 | |
| 645 | return OK; |
| 646 | } |
| 647 | |
Zhuoyao Zhang | 864c771 | 2016-08-16 15:35:28 -0700 | [diff] [blame] | 648 | status_t CompoundType::emitVtsAttributeType(Formatter &out) const { |
Zhuoyao Zhang | 5158db4 | 2016-08-10 10:25:20 -0700 | [diff] [blame] | 649 | switch (mStyle) { |
| 650 | case STYLE_STRUCT: |
| 651 | { |
| 652 | out << "type: TYPE_STRUCT\n"; |
| 653 | break; |
| 654 | } |
| 655 | case STYLE_UNION: |
| 656 | { |
| 657 | out << "type: TYPE_UNION\n"; |
| 658 | break; |
| 659 | } |
| 660 | default: |
| 661 | break; |
| 662 | } |
| 663 | out << "predefined_type: \"" << localName() << "\"\n"; |
| 664 | return OK; |
| 665 | } |
| 666 | |
Andreas Huber | 70a59e1 | 2016-08-16 12:57:01 -0700 | [diff] [blame] | 667 | bool CompoundType::isJavaCompatible() const { |
Andreas Huber | 0fa9e39 | 2016-08-31 09:05:44 -0700 | [diff] [blame] | 668 | if (mStyle != STYLE_STRUCT || !Scope::isJavaCompatible()) { |
| 669 | return false; |
| 670 | } |
| 671 | |
| 672 | for (const auto &field : *mFields) { |
| 673 | if (!field->type().isJavaCompatible()) { |
| 674 | return false; |
| 675 | } |
| 676 | } |
| 677 | |
| 678 | return true; |
Andreas Huber | 85eabdb | 2016-08-25 11:24:49 -0700 | [diff] [blame] | 679 | } |
| 680 | |
| 681 | void CompoundType::getAlignmentAndSize(size_t *align, size_t *size) const { |
| 682 | *align = 1; |
| 683 | |
| 684 | size_t offset = 0; |
| 685 | for (const auto &field : *mFields) { |
| 686 | // Each field is aligned according to its alignment requirement. |
| 687 | // The surrounding structure's alignment is the maximum of its |
| 688 | // fields' aligments. |
| 689 | |
| 690 | size_t fieldAlign, fieldSize; |
| 691 | field->type().getAlignmentAndSize(&fieldAlign, &fieldSize); |
| 692 | |
| 693 | size_t pad = offset % fieldAlign; |
| 694 | if (pad > 0) { |
| 695 | offset += fieldAlign - pad; |
| 696 | } |
| 697 | |
| 698 | offset += fieldSize; |
| 699 | |
| 700 | if (fieldAlign > (*align)) { |
| 701 | *align = fieldAlign; |
| 702 | } |
| 703 | } |
| 704 | |
| 705 | // Final padding to account for the structure's alignment. |
| 706 | size_t pad = offset % (*align); |
| 707 | if (pad > 0) { |
| 708 | offset += (*align) - pad; |
| 709 | } |
| 710 | |
| 711 | *size = offset; |
Andreas Huber | 70a59e1 | 2016-08-16 12:57:01 -0700 | [diff] [blame] | 712 | } |
| 713 | |
Andreas Huber | 31629bc | 2016-08-03 09:06:40 -0700 | [diff] [blame] | 714 | //////////////////////////////////////////////////////////////////////////////// |
| 715 | |
| 716 | CompoundField::CompoundField(const char *name, Type *type) |
| 717 | : mName(name), |
| 718 | mType(type) { |
| 719 | } |
| 720 | |
| 721 | std::string CompoundField::name() const { |
| 722 | return mName; |
| 723 | } |
| 724 | |
| 725 | const Type &CompoundField::type() const { |
| 726 | return *mType; |
| 727 | } |
| 728 | |
Andreas Huber | c9410c7 | 2016-07-28 12:18:40 -0700 | [diff] [blame] | 729 | } // namespace android |
| 730 | |