| /* |
| * 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 "EnumType.h" |
| |
| #include "ScalarType.h" |
| |
| #include <assert.h> |
| #include <inttypes.h> |
| #include <hidl-util/Formatter.h> |
| #include <android-base/logging.h> |
| |
| namespace android { |
| |
| EnumType::EnumType( |
| const char *localName, |
| std::vector<EnumValue *> *values, |
| Type *storageType) |
| : NamedType(localName), |
| mValues(values), |
| mStorageType( |
| storageType != NULL |
| ? storageType |
| : new ScalarType(ScalarType::KIND_INT32)) { |
| } |
| |
| const Type *EnumType::storageType() const { |
| return mStorageType; |
| } |
| |
| const std::vector<EnumValue *> &EnumType::values() const { |
| return *mValues; |
| } |
| |
| const ScalarType *EnumType::resolveToScalarType() const { |
| return mStorageType->resolveToScalarType(); |
| } |
| |
| bool EnumType::isEnum() const { |
| return true; |
| } |
| |
| std::string EnumType::getCppType(StorageMode, |
| std::string *extra, |
| bool specifyNamespaces) const { |
| extra->clear(); |
| |
| return specifyNamespaces ? fullName() : partialCppName(); |
| } |
| |
| std::string EnumType::getJavaType( |
| std::string *extra, bool forInitializer) const { |
| return mStorageType->resolveToScalarType()->getJavaType( |
| extra, forInitializer); |
| } |
| |
| std::string EnumType::getJavaSuffix() const { |
| return mStorageType->resolveToScalarType()->getJavaSuffix(); |
| } |
| |
| std::string EnumType::getJavaWrapperType() const { |
| return mStorageType->resolveToScalarType()->getJavaWrapperType(); |
| } |
| |
| void EnumType::emitReaderWriter( |
| Formatter &out, |
| const std::string &name, |
| const std::string &parcelObj, |
| bool parcelObjIsPointer, |
| bool isReader, |
| ErrorMode mode) const { |
| const ScalarType *scalarType = mStorageType->resolveToScalarType(); |
| CHECK(scalarType != NULL); |
| |
| scalarType->emitReaderWriterWithCast( |
| out, |
| name, |
| parcelObj, |
| parcelObjIsPointer, |
| isReader, |
| mode, |
| true /* needsCast */); |
| } |
| |
| void EnumType::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 { |
| return mStorageType->emitJavaFieldReaderWriter( |
| out, depth, parcelName, blobName, fieldName, offset, isReader); |
| } |
| |
| status_t EnumType::emitTypeDeclarations(Formatter &out) const { |
| const ScalarType *scalarType = mStorageType->resolveToScalarType(); |
| CHECK(scalarType != NULL); |
| |
| std::string extra; |
| |
| out << "enum class " |
| << localName() |
| << " : " |
| << ((Type *)scalarType)->getCppType(&extra) |
| << " {\n"; |
| |
| out.indent(); |
| |
| std::vector<const EnumType *> chain; |
| getTypeChain(&chain); |
| |
| for (auto it = chain.rbegin(); it != chain.rend(); ++it) { |
| const auto &type = *it; |
| |
| for (const auto &entry : type->values()) { |
| out << entry->name(); |
| |
| const char *value = entry->cppValue(scalarType->getKind()); |
| if (value != NULL) { |
| out << " = " << value; |
| } |
| |
| out << ","; |
| |
| const char *comment = entry->comment(); |
| if (comment != NULL && strcmp(comment, value) != 0) { |
| out << " // " << comment; |
| } |
| |
| out << "\n"; |
| } |
| } |
| |
| out.unindent(); |
| out << "};\n\n"; |
| |
| return OK; |
| } |
| |
| // Attempt to convert enum value literals into their signed equivalents, |
| // i.e. if an enum value is stored in typeName 'byte', the value "192" |
| // will be converted to the output "-64". |
| static bool MakeSignedIntegerValue( |
| const std::string &typeName, const char *value, std::string *output) { |
| output->clear(); |
| |
| char *end; |
| long long x = strtoll(value, &end, 10); |
| |
| if (end > value && *end == '\0' && errno != ERANGE) { |
| char out[32]; |
| if (typeName == "byte") { |
| sprintf(out, "%d", (int)(int8_t)x); |
| } else if (typeName == "short") { |
| sprintf(out, "%d", (int)(int16_t)x); |
| } else if (typeName == "int") { |
| sprintf(out, "%d", (int)(int32_t)x); |
| } else { |
| assert(typeName == "long"); |
| sprintf(out, "%" PRId64 "L", (int64_t)x); |
| } |
| |
| *output = out; |
| return true; |
| } |
| |
| return false; |
| } |
| |
| status_t EnumType::emitJavaTypeDeclarations(Formatter &out, bool) const { |
| const ScalarType *scalarType = mStorageType->resolveToScalarType(); |
| CHECK(scalarType != NULL); |
| |
| out << "public final class " |
| << localName() |
| << " {\n"; |
| |
| out.indent(); |
| |
| std::string extra; // unused, because ScalarType leaves this empty. |
| const std::string typeName = |
| scalarType->getJavaType(&extra, false /* forInitializer */); |
| |
| std::vector<const EnumType *> chain; |
| getTypeChain(&chain); |
| |
| for (auto it = chain.rbegin(); it != chain.rend(); ++it) { |
| const auto &type = *it; |
| |
| std::string prevEntryName; |
| for (const auto &entry : type->values()) { |
| out << "public static final " |
| << typeName |
| << " " |
| << entry->name() |
| << " = "; |
| |
| const char *value = entry->javaValue(scalarType->getKind()); |
| if (value != NULL) { |
| std::string convertedValue; |
| if (MakeSignedIntegerValue(typeName, value, &convertedValue)) { |
| out << convertedValue; |
| } else { |
| // The value is not an integer, but some other string, |
| // hopefully referring to some other enum name. |
| out << value; |
| } |
| } else if (prevEntryName.empty()) { |
| out << "0"; |
| } else { |
| out << prevEntryName << " + 1"; |
| } |
| |
| out << ";"; |
| |
| const char *comment = entry->comment(); |
| if (comment != NULL && strcmp(comment, value) != 0) { |
| out << " // " << comment; |
| } |
| |
| out << "\n"; |
| |
| prevEntryName = entry->name(); |
| } |
| } |
| |
| out.unindent(); |
| out << "};\n\n"; |
| |
| return OK; |
| } |
| |
| status_t EnumType::emitVtsTypeDeclarations(Formatter &out) const { |
| out << "name: \"" << localName() << "\"\n" |
| << "type: TYPE_ENUM\n" |
| << "enum_value: {\n"; |
| out.indent(); |
| |
| std::vector<const EnumType *> chain; |
| getTypeChain(&chain); |
| |
| for (auto it = chain.rbegin(); it != chain.rend(); ++it) { |
| const auto &type = *it; |
| |
| for (const auto &entry : type->values()) { |
| out << "enumerator: \"" << entry->name() << "\"\n"; |
| |
| const char *value = entry->value(); |
| if (value != NULL) { |
| out << "value: " << value << "\n"; |
| } |
| } |
| } |
| |
| out.unindent(); |
| out << "}\n"; |
| return OK; |
| } |
| |
| status_t EnumType::emitVtsAttributeType(Formatter &out) const { |
| out << "type: TYPE_ENUM\n" |
| << "predefined_type: \"" |
| << localName() |
| << "\"\n"; |
| return OK; |
| } |
| |
| void EnumType::getTypeChain(std::vector<const EnumType *> *out) const { |
| out->clear(); |
| const EnumType *type = this; |
| for (;;) { |
| out->push_back(type); |
| |
| const Type *superType = type->storageType(); |
| if (superType == NULL || !superType->isEnum()) { |
| break; |
| } |
| |
| type = static_cast<const EnumType *>(superType); |
| } |
| } |
| |
| void EnumType::getAlignmentAndSize(size_t *align, size_t *size) const { |
| mStorageType->getAlignmentAndSize(align, size); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| EnumValue::EnumValue(const char *name, const ConstantExpression *value) |
| : mName(name), |
| mValue(value) { |
| } |
| |
| std::string EnumValue::name() const { |
| return mName; |
| } |
| |
| const char *EnumValue::value() const { |
| return mValue ? mValue->value() : nullptr; |
| } |
| |
| const char *EnumValue::cppValue(ScalarType::Kind castKind) const { |
| return mValue ? mValue->cppValue(castKind) : nullptr; |
| } |
| const char *EnumValue::javaValue(ScalarType::Kind castKind) const { |
| return mValue ? mValue->javaValue(castKind) : nullptr; |
| } |
| |
| const char *EnumValue::comment() const { |
| return mValue ? mValue->description() : nullptr; |
| } |
| |
| } // namespace android |
| |