| /* |
| * 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 "StringType.h" |
| |
| #include "HidlTypeAssertion.h" |
| |
| #include <hidl-util/Formatter.h> |
| |
| namespace android { |
| |
| StringType::StringType(Scope* parent) : Type(parent, "string") {} |
| |
| bool StringType::isString() const { |
| return true; |
| } |
| |
| bool StringType::deepCanCheckEquality(std::unordered_set<const Type*>* /* visited */) const { |
| return true; |
| } |
| |
| std::string StringType::typeName() const { |
| return "string"; |
| } |
| |
| std::string StringType::getCppType(StorageMode mode, |
| bool specifyNamespaces) const { |
| const std::string base = |
| std::string(specifyNamespaces ? "::android::hardware::" : "") |
| + "hidl_string"; |
| |
| switch (mode) { |
| case StorageMode_Stack: |
| return base; |
| |
| case StorageMode_Argument: |
| return "const " + base + "&"; |
| |
| case StorageMode_Result: |
| return "const " + base + "*"; |
| } |
| } |
| |
| std::string StringType::getJavaType(bool /* forInitializer */) const { |
| return "String"; |
| } |
| |
| std::string StringType::getJavaSuffix() const { |
| return "String"; |
| } |
| |
| std::string StringType::getVtsType() const { |
| return "TYPE_STRING"; |
| } |
| |
| void StringType::emitReaderWriter( |
| Formatter &out, |
| const std::string &name, |
| const std::string &parcelObj, |
| bool parcelObjIsPointer, |
| bool isReader, |
| ErrorMode mode) const { |
| const std::string parentName = "_hidl_" + name + "_parent"; |
| out << "size_t " << parentName << ";\n\n"; |
| |
| const std::string parcelObjDeref = |
| parcelObj + (parcelObjIsPointer ? "->" : "."); |
| |
| if (isReader) { |
| out << "_hidl_err = " |
| << parcelObjDeref |
| << "readBuffer(" |
| << "sizeof(*" |
| << name |
| << "), &" |
| << parentName |
| << ", " |
| << " reinterpret_cast<const void **>(" |
| << "&" << name |
| << "));\n\n"; |
| |
| handleError(out, mode); |
| } 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 StringType::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_string", |
| "" /* childName */, |
| "::android::hardware"); |
| } |
| |
| void StringType::emitJavaFieldInitializer( |
| Formatter &out, const std::string &fieldName) const { |
| emitJavaFieldDefaultInitialValue(out, "String " + fieldName); |
| } |
| |
| void StringType::emitJavaFieldDefaultInitialValue( |
| Formatter &out, const std::string &declaredFieldName) const { |
| out << declaredFieldName << " = new String();\n"; |
| } |
| |
| void StringType::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 |
| << " = " |
| << blobName |
| << ".getString(" |
| << offset |
| << ");\n"; |
| |
| out << "\n" |
| << parcelName |
| << ".readEmbeddedBuffer(\n"; |
| |
| out.indent(); |
| out.indent(); |
| |
| // hidl_string's embedded buffer is never null(able), because it defaults to a |
| // buffer containing an empty string. |
| out << "(" << getJavaTypeCast(fieldName) << ").getBytes().length + 1,\n" |
| << blobName |
| << ".handle(),\n" |
| << offset |
| << " + 0 /* offsetof(hidl_string, mBuffer) */," |
| << "false /* nullable */);\n\n"; |
| |
| out.unindent(); |
| out.unindent(); |
| |
| return; |
| } |
| |
| out << blobName |
| << ".putString(" |
| << offset |
| << ", " |
| << fieldName |
| << ");\n"; |
| } |
| |
| bool StringType::needsEmbeddedReadWrite() const { |
| return true; |
| } |
| |
| bool StringType::resultNeedsDeref() const { |
| return true; |
| } |
| |
| void StringType::emitVtsTypeDeclarations(Formatter& out) const { |
| out << "type: " << getVtsType() << "\n"; |
| } |
| |
| static HidlTypeAssertion assertion("hidl_string", 16 /* size */); |
| void StringType::getAlignmentAndSize(size_t *align, size_t *size) const { |
| *align = 8; // hidl_string |
| *size = assertion.size(); |
| } |
| |
| } // namespace android |
| |