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/*
* Copyright (C) 2019 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 <hidl-util/FQName.h>
#include <string>
#include "AidlHelper.h"
#include "ArrayType.h"
#include "EnumType.h"
#include "FmqType.h"
#include "NamedType.h"
#include "Type.h"
#include "VectorType.h"
namespace android {
static std::string getPlaceholderType(const std::string& type) {
return "IBinder /* FIXME: " + type + " */";
}
static const std::map<std::string, ReplacedTypeInfo> kReplacedTypes{
{"android.hidl.safe_union@1.0::Monostate",
ReplacedTypeInfo{
"boolean", std::nullopt,
[](Formatter& out) { out << "// Nothing to translate for Monostate.\n"; }}},
};
std::optional<const ReplacedTypeInfo> AidlHelper::getAidlReplacedType(const FQName& fqName) {
const auto& it = kReplacedTypes.find(fqName.string());
if (it != kReplacedTypes.end()) {
return it->second;
}
return std::nullopt;
}
std::string AidlHelper::getAidlType(const Type& type, const FQName& relativeTo,
AidlBackend backend) {
if (type.isVector()) {
const VectorType& vec = static_cast<const VectorType&>(type);
return getAidlType(*vec.getElementType(), relativeTo) + "[]";
} else if (type.isArray()) {
const ArrayType& arr = static_cast<const ArrayType&>(type);
auto sizes = arr.getConstantExpressions();
CHECK(sizes.size() > 0) << "Failed to get array dimensions for " << arr.definedName();
std::string typeStr = getAidlType(*arr.getElementType(), relativeTo);
for (const auto& size : sizes) {
typeStr += "[" + size->value() + "]";
}
return typeStr;
} else if (type.isNamedType()) {
const NamedType& namedType = static_cast<const NamedType&>(type);
if (getAidlPackage(relativeTo) == getAidlPackage(namedType.fqName())) {
return getAidlName(namedType.fqName(), backend);
} else {
std::optional<const ReplacedTypeInfo> type = getAidlReplacedType(namedType.fqName());
if (type) {
notes() << "Replacing type " << namedType.fqName().string() << " with "
<< type.value().aidlReplacedType << ".\n";
return type.value().aidlReplacedType;
}
std::optional<std::string> name = getAidlFQName(namedType.fqName()).value();
if (name) {
return name.value();
} else {
LOG(FATAL) << "Failed to resolve Aidl FQName: " << namedType.fqName().string();
return "";
}
}
} else if (type.isMemory()) {
return getPlaceholderType("memory");
} else if (type.isFmq()) {
const FmqType& fmq = static_cast<const FmqType&>(type);
return getPlaceholderType(fmq.templatedTypeName() + "<" +
getAidlType(*fmq.getElementType(), relativeTo) + ">");
} else if (type.isPointer()) {
return getPlaceholderType("pointer");
} else if (type.isEnum()) {
// enum type goes to the primitive java type in HIDL, but AIDL should use
// the enum type name itself
return type.definedName();
} else if (type.isBitField()) {
const BitFieldType& bitfield = static_cast<const BitFieldType&>(type);
return getAidlType(*bitfield.getElementType(), relativeTo);
} else if (type.getJavaType() == "short") {
notes() << relativeTo.name()
<< ": Consider replacing char with int if signed integer is desired\n";
return "char";
} else {
return type.getJavaType();
}
}
} // namespace android
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