| /* |
| * Copyright (C) 2016 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "VectorType.h" |
| |
| #include "ArrayType.h" |
| |
| #include <hidl-util/Formatter.h> |
| #include <android-base/logging.h> |
| |
| namespace android { |
| |
| VectorType::VectorType() { |
| } |
| |
| void VectorType::addNamedTypesToSet(std::set<const FQName> &set) const { |
| mElementType->addNamedTypesToSet(set); |
| } |
| |
| std::string VectorType::getCppType(StorageMode mode, |
| std::string *extra, |
| bool specifyNamespaces) const { |
| std::string elementExtra; |
| const std::string elementBase = mElementType->getCppType(&elementExtra, specifyNamespaces); |
| |
| const std::string base = |
| std::string(specifyNamespaces ? "::android::hardware::" : "") |
| + "hidl_vec<" |
| + mElementType->getCppType(extra, specifyNamespaces) |
| + (*extra) |
| + ">"; |
| |
| extra->clear(); |
| |
| switch (mode) { |
| case StorageMode_Stack: |
| return base; |
| |
| case StorageMode_Argument: |
| return "const " + base + "&"; |
| |
| case StorageMode_Result: |
| return "const " + base + "*"; |
| } |
| } |
| |
| std::string VectorType::getJavaType( |
| std::string *extra, bool /* forInitializer */) const { |
| *extra = "[]"; |
| |
| std::string elementExtra; |
| return mElementType->getJavaType(&elementExtra) + elementExtra; |
| } |
| |
| std::string VectorType::getVtsType() const { |
| return "TYPE_VECTOR"; |
| } |
| |
| void VectorType::emitReaderWriter( |
| Formatter &out, |
| const std::string &name, |
| const std::string &parcelObj, |
| bool parcelObjIsPointer, |
| bool isReader, |
| ErrorMode mode) const { |
| std::string baseExtra; |
| std::string baseType = mElementType->getCppType(&baseExtra); |
| |
| const std::string parentName = "_hidl_" + name + "_parent"; |
| |
| out << "size_t " << parentName << ";\n\n"; |
| |
| const std::string parcelObjDeref = |
| parcelObj + (parcelObjIsPointer ? "->" : "."); |
| |
| if (isReader) { |
| out << name |
| << " = (const ::android::hardware::hidl_vec<" |
| << baseType |
| << baseExtra |
| << "> *)" |
| << parcelObjDeref |
| << "readBuffer(&" |
| << parentName |
| << ");\n\n"; |
| |
| out << "if (" << name << " == nullptr) {\n"; |
| |
| out.indent(); |
| |
| out << "_hidl_err = ::android::UNKNOWN_ERROR;\n"; |
| handleError2(out, mode); |
| |
| out.unindent(); |
| out << "}\n\n"; |
| } else { |
| out << "_hidl_err = " |
| << parcelObjDeref |
| << "writeBuffer(&" |
| << name |
| << ", sizeof(" |
| << name |
| << "), &" |
| << parentName |
| << ");\n"; |
| |
| handleError(out, mode); |
| } |
| |
| emitReaderWriterEmbedded( |
| out, |
| 0 /* depth */, |
| name, |
| name /* sanitizedName */ , |
| isReader /* nameIsPointer */, |
| parcelObj, |
| parcelObjIsPointer, |
| isReader, |
| mode, |
| parentName, |
| "0 /* parentOffset */"); |
| } |
| |
| void VectorType::emitReaderWriterEmbedded( |
| Formatter &out, |
| size_t depth, |
| const std::string &name, |
| const std::string &sanitizedName, |
| bool nameIsPointer, |
| const std::string &parcelObj, |
| bool parcelObjIsPointer, |
| bool isReader, |
| ErrorMode mode, |
| const std::string &parentName, |
| const std::string &offsetText) const { |
| std::string baseExtra; |
| std::string baseType = Type::getCppType(&baseExtra); |
| |
| const std::string childName = "_hidl_" + sanitizedName + "_child"; |
| out << "size_t " << childName << ";\n\n"; |
| |
| emitReaderWriterEmbeddedForTypeName( |
| out, |
| name, |
| nameIsPointer, |
| parcelObj, |
| parcelObjIsPointer, |
| isReader, |
| mode, |
| parentName, |
| offsetText, |
| baseType, |
| childName); |
| |
| if (!mElementType->needsEmbeddedReadWrite()) { |
| return; |
| } |
| |
| const std::string nameDeref = name + (nameIsPointer ? "->" : "."); |
| |
| baseType = mElementType->getCppType(&baseExtra); |
| |
| std::string iteratorName = "_hidl_index_" + std::to_string(depth); |
| |
| out << "for (size_t " |
| << iteratorName |
| << " = 0; " |
| << iteratorName |
| << " < " |
| << nameDeref |
| << "size(); ++" |
| << iteratorName |
| << ") {\n"; |
| |
| out.indent(); |
| |
| mElementType->emitReaderWriterEmbedded( |
| out, |
| depth + 1, |
| (nameIsPointer ? "(*" + name + ")" : name) |
| + "[" + iteratorName + "]", |
| sanitizedName + (nameIsPointer ? "_deref" : "") + "_indexed", |
| false /* nameIsPointer */, |
| parcelObj, |
| parcelObjIsPointer, |
| isReader, |
| mode, |
| childName, |
| iteratorName + " * sizeof(" + baseType + baseExtra + ")"); |
| |
| out.unindent(); |
| |
| out << "}\n\n"; |
| } |
| |
| void VectorType::emitResolveReferences( |
| Formatter &out, |
| const std::string &name, |
| bool nameIsPointer, |
| const std::string &parcelObj, |
| bool parcelObjIsPointer, |
| bool isReader, |
| ErrorMode mode) const { |
| emitResolveReferencesEmbeddedHelper( |
| out, |
| 0, /* depth */ |
| name, |
| name /* sanitizedName */, |
| nameIsPointer, |
| parcelObj, |
| parcelObjIsPointer, |
| isReader, |
| mode, |
| "_hidl_" + name + "_child", |
| "0 /* parentOffset */"); |
| } |
| |
| void VectorType::emitResolveReferencesEmbedded( |
| Formatter &out, |
| size_t depth, |
| const std::string &name, |
| const std::string &sanitizedName, |
| bool nameIsPointer, |
| const std::string &parcelObj, |
| bool parcelObjIsPointer, |
| bool isReader, |
| ErrorMode mode, |
| const std::string & /* parentName */, |
| const std::string & /* offsetText */) const { |
| emitResolveReferencesEmbeddedHelper( |
| out, depth, name, sanitizedName, nameIsPointer, parcelObj, |
| parcelObjIsPointer, isReader, mode, "", ""); |
| } |
| |
| bool VectorType::useParentInEmitResolveReferencesEmbedded() const { |
| // parentName and offsetText is not used in emitResolveReferencesEmbedded |
| return false; |
| } |
| |
| void VectorType::emitResolveReferencesEmbeddedHelper( |
| Formatter &out, |
| size_t depth, |
| const std::string &name, |
| const std::string &sanitizedName, |
| bool nameIsPointer, |
| const std::string &parcelObj, |
| bool parcelObjIsPointer, |
| bool isReader, |
| ErrorMode mode, |
| const std::string &childName, |
| const std::string &childOffsetText) const { |
| CHECK(needsResolveReferences() && mElementType->needsResolveReferences()); |
| |
| const std::string nameDeref = name + (nameIsPointer ? "->" : "."); |
| std::string elementExtra; |
| std::string elementType = mElementType->getCppType(&elementExtra); |
| |
| std::string myChildName = childName, myChildOffset = childOffsetText; |
| |
| if(myChildName.empty() && myChildOffset.empty()) { |
| myChildName = "_hidl_" + sanitizedName + "_child"; |
| myChildOffset = "0"; |
| |
| out << "size_t " << myChildName << ";\n"; |
| out << "_hidl_err = " << nameDeref << "findInParcel(" |
| << (parcelObjIsPointer ? "*" : "") << parcelObj << ", " |
| << "&" << myChildName |
| << ");\n"; |
| |
| handleError(out, mode); |
| } |
| |
| std::string iteratorName = "_hidl_index_" + std::to_string(depth); |
| |
| out << "for (size_t " |
| << iteratorName |
| << " = 0; " |
| << iteratorName |
| << " < " |
| << nameDeref |
| << "size(); ++" |
| << iteratorName |
| << ") {\n"; |
| |
| out.indent(); |
| |
| mElementType->emitResolveReferencesEmbedded( |
| out, |
| depth + 1, |
| (nameIsPointer ? "(*" + name + ")" : name) + "[" + iteratorName + "]", |
| sanitizedName + (nameIsPointer ? "_deref" : "") + "_indexed", |
| false /* nameIsPointer */, |
| parcelObj, |
| parcelObjIsPointer, |
| isReader, |
| mode, |
| myChildName, |
| myChildOffset + " + " + |
| iteratorName + " * sizeof(" + elementType + elementExtra + ")"); |
| |
| out.unindent(); |
| |
| out << "}\n\n"; |
| } |
| |
| void VectorType::emitJavaReaderWriter( |
| Formatter &out, |
| const std::string &parcelObj, |
| const std::string &argName, |
| bool isReader) const { |
| if (mElementType->isCompoundType()) { |
| std::string extra; // unused, because CompoundType leaves this empty. |
| |
| if (isReader) { |
| out << mElementType->getJavaType(&extra) |
| << ".readVectorFromParcel(" |
| << parcelObj |
| << ");\n"; |
| } else { |
| out << mElementType->getJavaType(&extra) |
| << ".writeVectorToParcel(" |
| << parcelObj |
| << ", " |
| << argName |
| << ");\n"; |
| } |
| |
| return; |
| } |
| |
| emitJavaReaderWriterWithSuffix( |
| out, |
| parcelObj, |
| argName, |
| isReader, |
| mElementType->getJavaSuffix() + "Vector", |
| "" /* extra */); |
| } |
| |
| void VectorType::emitJavaFieldInitializer( |
| Formatter &out, const std::string &fieldName) const { |
| std::string extra; |
| mElementType->getJavaType(&extra); |
| |
| const std::string wrapperType = mElementType->getJavaWrapperType(); |
| |
| out << "final ArrayList<" |
| << wrapperType |
| << extra |
| << "> " |
| << fieldName |
| << " = new ArrayList<" |
| << wrapperType |
| << extra |
| << ">();\n"; |
| } |
| |
| void VectorType::emitJavaFieldReaderWriter( |
| Formatter &out, |
| size_t depth, |
| const std::string &parcelName, |
| const std::string &blobName, |
| const std::string &fieldName, |
| const std::string &offset, |
| bool isReader) const { |
| VectorType::EmitJavaFieldReaderWriterForElementType( |
| out, |
| depth, |
| mElementType, |
| parcelName, |
| blobName, |
| fieldName, |
| offset, |
| isReader); |
| } |
| |
| // static |
| void VectorType::EmitJavaFieldReaderWriterForElementType( |
| Formatter &out, |
| size_t depth, |
| const Type *elementType, |
| const std::string &parcelName, |
| const std::string &blobName, |
| const std::string &fieldName, |
| const std::string &offset, |
| bool isReader) { |
| if (isReader) { |
| out << "{\n"; |
| out.indent(); |
| |
| out << "HwBlob childBlob = " |
| << parcelName |
| << ".readEmbeddedBuffer(\n"; |
| |
| out.indent(); |
| out.indent(); |
| |
| out << blobName |
| << ".handle(),\n" |
| << offset |
| << " + 0 /* offsetof(hidl_vec<T>, mBuffer) */);\n\n"; |
| |
| out.unindent(); |
| out.unindent(); |
| |
| out << fieldName << ".clear();\n"; |
| out << "long _hidl_vec_size = " |
| << blobName |
| << ".getInt64(" |
| << offset |
| << " + 8 /* offsetof(hidl_vec<T>, mSize) */);\n"; |
| |
| std::string iteratorName = "_hidl_index_" + std::to_string(depth); |
| |
| out << "for (int " |
| << iteratorName |
| << " = 0; " |
| << iteratorName |
| << " < _hidl_vec_size; " |
| << "++" |
| << iteratorName |
| << ") {\n"; |
| |
| out.indent(); |
| |
| elementType->emitJavaFieldInitializer(out, "_hidl_vec_element"); |
| |
| size_t elementAlign, elementSize; |
| elementType->getAlignmentAndSize(&elementAlign, &elementSize); |
| |
| elementType->emitJavaFieldReaderWriter( |
| out, |
| depth + 1, |
| parcelName, |
| "childBlob", |
| "_hidl_vec_element", |
| iteratorName + " * " + std::to_string(elementSize), |
| true /* isReader */); |
| |
| out << fieldName; |
| |
| if (elementType->isArray() |
| && static_cast<const ArrayType *>( |
| elementType)->getElementType()->resolveToScalarType() |
| != nullptr) { |
| out << ".add(HwBlob.wrapArray(_hidl_vec_element));\n"; |
| } else { |
| out << ".add(_hidl_vec_element);\n"; |
| } |
| |
| out.unindent(); |
| |
| out << "}\n"; |
| |
| out.unindent(); |
| out << "}\n"; |
| |
| return; |
| } |
| |
| out << "{\n"; |
| out.indent(); |
| |
| out << "long _hidl_vec_size = " |
| << fieldName |
| << ".size();\n"; |
| |
| out << blobName |
| << ".putInt64(" |
| << offset |
| << " + 8 /* offsetof(hidl_vec<T>, mSize) */, _hidl_vec_size);\n"; |
| |
| out << blobName |
| << ".putBool(" |
| << offset |
| << " + 16 /* offsetof(hidl_vec<T>, mOwnsBuffer) */, false);\n"; |
| |
| size_t elementAlign, elementSize; |
| elementType->getAlignmentAndSize(&elementAlign, &elementSize); |
| |
| // XXX make HwBlob constructor take a long instead of an int? |
| out << "HwBlob childBlob = new HwBlob((int)(_hidl_vec_size * " |
| << elementSize |
| << "));\n"; |
| |
| std::string iteratorName = "_hidl_index_" + std::to_string(depth); |
| |
| out << "for (int " |
| << iteratorName |
| << " = 0; " |
| << iteratorName |
| << " < _hidl_vec_size; " |
| << "++" |
| << iteratorName |
| << ") {\n"; |
| |
| out.indent(); |
| |
| elementType->emitJavaFieldReaderWriter( |
| out, |
| depth + 1, |
| parcelName, |
| "childBlob", |
| fieldName + ".get(" + iteratorName + ")", |
| iteratorName + " * " + std::to_string(elementSize), |
| false /* isReader */); |
| |
| out.unindent(); |
| |
| out << "}\n"; |
| |
| out << blobName |
| << ".putBlob(" |
| << offset |
| << " + 0 /* offsetof(hidl_vec<T>, mBuffer) */, childBlob);\n"; |
| |
| out.unindent(); |
| out << "}\n"; |
| } |
| |
| bool VectorType::needsEmbeddedReadWrite() const { |
| return true; |
| } |
| |
| bool VectorType::needsResolveReferences() const { |
| return mElementType->needsResolveReferences(); |
| } |
| |
| bool VectorType::resultNeedsDeref() const { |
| return true; |
| } |
| |
| status_t VectorType::emitVtsTypeDeclarations(Formatter &out) const { |
| out << "type: " << getVtsType() << "\n"; |
| out << "vector_value: {\n"; |
| out.indent(); |
| status_t err = mElementType->emitVtsTypeDeclarations(out); |
| if (err != OK) { |
| return err; |
| } |
| out.unindent(); |
| out << "}\n"; |
| return OK; |
| } |
| |
| status_t VectorType::emitVtsAttributeType(Formatter &out) const { |
| out << "type: TYPE_VECTOR\n" << "vector_value: {\n"; |
| out.indent(); |
| status_t status = mElementType->emitVtsAttributeType(out); |
| if (status != OK) { |
| return status; |
| } |
| out.unindent(); |
| out << "}\n"; |
| return OK; |
| } |
| |
| bool VectorType::isJavaCompatible() const { |
| if (!mElementType->isJavaCompatible()) { |
| return false; |
| } |
| |
| if (mElementType->isArray()) { |
| return static_cast<ArrayType *>(mElementType)->countDimensions() == 1; |
| } |
| |
| return true; |
| } |
| |
| void VectorType::getAlignmentAndSize(size_t *align, size_t *size) const { |
| *align = 8; // hidl_vec<T> |
| *size = 24; |
| } |
| |
| } // namespace android |
| |