| /* |
| * 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 "ArrayType.h" |
| |
| #include <hidl-util/Formatter.h> |
| #include <android-base/logging.h> |
| |
| #include "ConstantExpression.h" |
| |
| namespace android { |
| |
| ArrayType::ArrayType(ArrayType *srcArray, ConstantExpression *size) |
| : mElementType(srcArray->mElementType), |
| mSizes(srcArray->mSizes), |
| mSizeComments(srcArray->mSizeComments) { |
| addDimension(size); |
| } |
| |
| ArrayType::ArrayType(Type *elementType, ConstantExpression *size) |
| : mElementType(elementType) { |
| addDimension(size); |
| } |
| |
| void ArrayType::addDimension(ConstantExpression *size) { |
| mSizes.insert(mSizes.begin(), size->cast<size_t>()); |
| mSizeComments.insert(mSizeComments.begin(), size->description()); |
| } |
| |
| void ArrayType::addNamedTypesToSet(std::set<const FQName> &set) const { |
| mElementType->addNamedTypesToSet(set); |
| } |
| |
| bool ArrayType::isArray() const { |
| return true; |
| } |
| |
| std::string ArrayType::getCppType(StorageMode mode, |
| std::string *extra, |
| bool specifyNamespaces) const { |
| const std::string base = mElementType->getCppType(extra, specifyNamespaces); |
| CHECK(extra->empty()); |
| |
| size_t numArrayElements = 1; |
| for (auto size : mSizes) { |
| numArrayElements *= size; |
| } |
| |
| std::string sizeComments = " /* " + base; |
| for (auto e : mSizeComments) { |
| sizeComments += "[" + e + "]"; |
| } |
| sizeComments += " */"; |
| |
| switch (mode) { |
| case StorageMode_Stack: |
| { |
| *extra += "["; |
| *extra += std::to_string(numArrayElements); |
| *extra += "]"; |
| *extra += sizeComments; |
| return base; |
| } |
| |
| case StorageMode_Argument: |
| case StorageMode_Result: |
| { |
| *extra += sizeComments; |
| return "const " + base + "*"; |
| } |
| } |
| } |
| |
| std::string ArrayType::getJavaType( |
| std::string *extra, bool forInitializer) const { |
| std::string baseExtra; |
| const std::string base = |
| mElementType->getJavaType(&baseExtra, forInitializer); |
| |
| CHECK(baseExtra.empty()); |
| |
| extra->clear(); |
| |
| CHECK(mSizes.size() == mSizeComments.size()); |
| for (size_t i = 0; i < mSizes.size(); ++i) { |
| *extra += "["; |
| |
| if (forInitializer) { |
| *extra += std::to_string(mSizes[i]); |
| *extra += " "; |
| } |
| |
| *extra += "/* " + mSizeComments[i] + " */"; |
| |
| *extra += "]"; |
| } |
| |
| return base; |
| } |
| |
| void ArrayType::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); |
| CHECK(baseExtra.empty()); |
| |
| const std::string parentName = "_hidl_" + name + "_parent"; |
| |
| out << "size_t " << parentName << ";\n\n"; |
| |
| const std::string parcelObjDeref = |
| parcelObj + (parcelObjIsPointer ? "->" : "."); |
| |
| if (isReader) { |
| out << name |
| << " = (const " |
| << baseType |
| << " *)" |
| << 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 |
| << ", "; |
| |
| for (auto size : mSizes) { |
| out << size << " * "; |
| } |
| |
| out << "sizeof(" |
| << baseType |
| << "), &" |
| << parentName |
| << ");\n"; |
| |
| handleError(out, mode); |
| } |
| |
| emitReaderWriterEmbedded( |
| out, |
| 0 /* depth */, |
| name, |
| isReader /* nameIsPointer */, |
| parcelObj, |
| parcelObjIsPointer, |
| isReader, |
| mode, |
| parentName, |
| "0 /* parentOffset */"); |
| } |
| |
| void ArrayType::emitReaderWriterEmbedded( |
| Formatter &out, |
| size_t depth, |
| const std::string &name, |
| bool nameIsPointer, |
| const std::string &parcelObj, |
| bool parcelObjIsPointer, |
| bool isReader, |
| ErrorMode mode, |
| const std::string &parentName, |
| const std::string &offsetText) const { |
| if (!mElementType->needsEmbeddedReadWrite()) { |
| return; |
| } |
| |
| const std::string nameDeref = name + (nameIsPointer ? "->" : "."); |
| |
| std::string baseExtra; |
| std::string baseType = mElementType->getCppType(&baseExtra); |
| CHECK(baseExtra.empty()); |
| |
| std::string iteratorName = "_hidl_index_" + std::to_string(depth); |
| |
| size_t numArrayElements = 1; |
| for (auto size : mSizes) { |
| numArrayElements *= size; |
| } |
| |
| out << "for (size_t " |
| << iteratorName |
| << " = 0; " |
| << iteratorName |
| << " < " |
| << numArrayElements |
| << "; ++" |
| << iteratorName |
| << ") {\n"; |
| |
| out.indent(); |
| |
| mElementType->emitReaderWriterEmbedded( |
| out, |
| depth + 1, |
| name + "[" + iteratorName + "]", |
| false /* nameIsPointer */, |
| parcelObj, |
| parcelObjIsPointer, |
| isReader, |
| mode, |
| parentName, |
| offsetText |
| + " + " + iteratorName + " * sizeof(" |
| + baseType |
| + ")"); |
| |
| out.unindent(); |
| |
| out << "}\n\n"; |
| } |
| |
| bool ArrayType::needsEmbeddedReadWrite() const { |
| return mElementType->needsEmbeddedReadWrite(); |
| } |
| |
| void ArrayType::emitJavaReaderWriter( |
| Formatter &out, |
| const std::string &parcelObj, |
| const std::string &argName, |
| bool isReader) const { |
| if (isReader) { |
| std::string extra; |
| out << "new " |
| << getJavaType(&extra, true /* forInitializer */) |
| << extra |
| << ";\n"; |
| } |
| |
| out << "{\n"; |
| out.indent(); |
| |
| out << "HwBlob _hidl_blob = "; |
| |
| if (isReader) { |
| out << parcelObj |
| << ".readBuffer();\n"; |
| } else { |
| size_t align, size; |
| getAlignmentAndSize(&align, &size); |
| |
| out << "new HwBlob(" |
| << size |
| << " /* size */);\n"; |
| } |
| |
| emitJavaFieldReaderWriter( |
| out, |
| 0 /* depth */, |
| parcelObj, |
| "_hidl_blob", |
| argName, |
| "0 /* offset */", |
| isReader); |
| |
| if (!isReader) { |
| out << parcelObj << ".writeBuffer(_hidl_blob);\n"; |
| } |
| |
| out.unindent(); |
| out << "}\n"; |
| } |
| |
| void ArrayType::emitJavaFieldInitializer( |
| Formatter &out, const std::string &fieldName) const { |
| std::string extra; |
| std::string typeName = getJavaType(&extra, false /* forInitializer */); |
| |
| std::string extraInit; |
| getJavaType(&extraInit, true /* forInitializer */); |
| |
| out << "final " |
| << typeName |
| << extra |
| << " " |
| << fieldName |
| << " = new " |
| << typeName |
| << extraInit |
| << ";\n"; |
| } |
| |
| void ArrayType::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 { |
| out << "{\n"; |
| out.indent(); |
| |
| std::string offsetName = "_hidl_array_offset_" + std::to_string(depth); |
| out << "long " << offsetName << " = " << offset << ";\n"; |
| |
| std::string indexString; |
| for (size_t dim = 0; dim < mSizes.size(); ++dim) { |
| std::string iteratorName = |
| "_hidl_index_" + std::to_string(depth) + "_" + std::to_string(dim); |
| |
| out << "for (int " |
| << iteratorName |
| << " = 0; " |
| << iteratorName |
| << " < " |
| << mSizes[dim] |
| << "; ++" |
| << iteratorName |
| << ") {\n"; |
| |
| out.indent(); |
| |
| indexString += "[" + iteratorName + "]"; |
| } |
| |
| if (isReader && mElementType->isCompoundType()) { |
| std::string extra; |
| std::string typeName = |
| mElementType->getJavaType(&extra, false /* forInitializer */); |
| |
| CHECK(extra.empty()); |
| |
| out << fieldName |
| << indexString |
| << " = new " |
| << typeName |
| << "();\n"; |
| } |
| |
| mElementType->emitJavaFieldReaderWriter( |
| out, |
| depth + 1, |
| parcelName, |
| blobName, |
| fieldName + indexString, |
| offsetName, |
| isReader); |
| |
| size_t elementAlign, elementSize; |
| mElementType->getAlignmentAndSize(&elementAlign, &elementSize); |
| |
| out << offsetName << " += " << std::to_string(elementSize) << ";\n"; |
| |
| for (size_t dim = 0; dim < mSizes.size(); ++dim) { |
| out.unindent(); |
| out << "}\n"; |
| } |
| |
| out.unindent(); |
| out << "}\n"; |
| } |
| |
| status_t ArrayType::emitVtsTypeDeclarations(Formatter &out) const { |
| if (mSizes.size() > 1) { |
| // Multi-dimensional arrays are yet to be supported in VTS. |
| return UNKNOWN_ERROR; |
| } |
| |
| out << "type: TYPE_ARRAY\n" << "vector_value: {\n"; |
| out.indent(); |
| out << "size: " << mSizes[0] << "\n"; |
| status_t err = mElementType->emitVtsTypeDeclarations(out); |
| if (err != OK) { |
| return err; |
| } |
| out.unindent(); |
| out << "}\n"; |
| return OK; |
| } |
| |
| bool ArrayType::isJavaCompatible() const { |
| return mElementType->isJavaCompatible(); |
| } |
| |
| void ArrayType::getAlignmentAndSize(size_t *align, size_t *size) const { |
| mElementType->getAlignmentAndSize(align, size); |
| |
| for (auto sizeInDimension : mSizes) { |
| (*size) *= sizeInDimension; |
| } |
| } |
| |
| } // namespace android |
| |