| /* |
| * 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 "HandleType.h" |
| |
| #include "HidlTypeAssertion.h" |
| |
| #include <hidl-util/Formatter.h> |
| #include <android-base/logging.h> |
| |
| namespace android { |
| |
| HandleType::HandleType(Scope* parent) : Type(parent, "handle") {} |
| |
| bool HandleType::isHandle() const { |
| return true; |
| } |
| |
| std::string HandleType::typeName() const { |
| return "handle"; |
| } |
| |
| std::string HandleType::getCppType(StorageMode mode, |
| bool specifyNamespaces) const { |
| const std::string base = |
| std::string(specifyNamespaces ? "::android::hardware::" : "") |
| + "hidl_handle"; |
| |
| switch (mode) { |
| case StorageMode_Stack: |
| return base; |
| |
| case StorageMode_Argument: |
| return "const " + base + "&"; |
| |
| case StorageMode_Result: |
| return base; |
| } |
| } |
| |
| std::string HandleType::getJavaType(bool /* forInitializer */) const { |
| return "android.os.NativeHandle"; |
| } |
| |
| std::string HandleType::getJavaSuffix() const { |
| return "NativeHandle"; |
| } |
| |
| std::string HandleType::getVtsType() const { |
| return "TYPE_HANDLE"; |
| } |
| |
| void HandleType::emitReaderWriter( |
| Formatter &out, |
| const std::string &name, |
| const std::string &parcelObj, |
| bool parcelObjIsPointer, |
| bool isReader, |
| ErrorMode mode) const { |
| const std::string parcelObjDeref = |
| parcelObj + (parcelObjIsPointer ? "->" : "."); |
| |
| if (isReader) { |
| out << "const native_handle_t *" |
| << name << "_ptr;\n\n"; |
| |
| out << "_hidl_err = " |
| << parcelObjDeref |
| << "readNullableNativeHandleNoDup(" |
| << "&" << name << "_ptr" |
| << ");\n\n"; |
| |
| handleError(out, mode); |
| |
| out << name << " = " << name << "_ptr;\n"; |
| } else { |
| out << "_hidl_err = "; |
| out << parcelObjDeref |
| << "writeNativeHandleNoDup(" |
| << name |
| << ");\n"; |
| |
| handleError(out, mode); |
| } |
| } |
| |
| void HandleType::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 { |
| emitReaderWriterEmbeddedForTypeName( |
| out, |
| name, |
| nameIsPointer, |
| parcelObj, |
| parcelObjIsPointer, |
| isReader, |
| mode, |
| parentName, |
| offsetText, |
| "::android::hardware::hidl_handle", |
| "" /* childName */, |
| "::android::hardware"); |
| } |
| |
| void HandleType::emitJavaFieldInitializer( |
| Formatter &out, const std::string &fieldName) const { |
| const std::string fieldDeclaration = getJavaType(false) + " " + fieldName; |
| emitJavaFieldDefaultInitialValue(out, fieldDeclaration); |
| } |
| |
| void HandleType::emitJavaFieldDefaultInitialValue( |
| Formatter &out, const std::string &declaredFieldName) const { |
| out << declaredFieldName |
| << " = new " |
| << getJavaType(true) |
| << "();\n"; |
| } |
| |
| void HandleType::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 { |
| if (isReader) { |
| out << fieldName |
| << " = " |
| << parcelName |
| << ".readEmbeddedNativeHandle(\n"; |
| |
| out.indent(2, [&] { |
| out << blobName |
| << ".handle(),\n" |
| << offset |
| << " + 0 /* offsetof(hidl_handle, mHandle) */);\n\n"; |
| }); |
| |
| return; |
| } |
| |
| out << blobName |
| << ".putNativeHandle(" |
| << offset |
| << ", " |
| << fieldName |
| << ");\n"; |
| } |
| |
| bool HandleType::needsEmbeddedReadWrite() const { |
| return true; |
| } |
| |
| bool HandleType::deepIsJavaCompatible(std::unordered_set<const Type*>* /* visited */) const { |
| return true; |
| } |
| |
| static HidlTypeAssertion assertion("hidl_handle", 16 /* size */); |
| void HandleType::getAlignmentAndSize(size_t *align, size_t *size) const { |
| *align = 8; // hidl_handle |
| *size = assertion.size(); |
| } |
| |
| void HandleType::emitVtsTypeDeclarations(Formatter& out) const { |
| out << "type: " << getVtsType() << "\n"; |
| } |
| |
| } // namespace android |
| |