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/*
* 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.
*/
#ifndef METHOD_H_
#define METHOD_H_
#include <android-base/macros.h>
#include <hidl-util/Formatter.h>
#include <utils/Errors.h>
#include <functional>
#include <map>
#include <set>
#include <string>
#include <unordered_set>
#include <vector>
#include "DocComment.h"
#include "Location.h"
#include "Reference.h"
namespace android {
struct Annotation;
struct ConstantExpression;
struct Formatter;
struct ScalarType;
struct Type;
struct TypedVarVector;
enum MethodImplType {
IMPL_INTERFACE,
IMPL_PROXY,
IMPL_STUB, // overrides the code in onTransact; IMPL_STUB_IMPL will be ignored
IMPL_STUB_IMPL, // use this->method() instead of mImpl->method()
IMPL_PASSTHROUGH,
};
using MethodImpl = std::map<MethodImplType, std::function<void(Formatter &)>>;
struct Method : DocCommentable {
Method(const std::string& name, std::vector<NamedReference<Type>*>* args,
std::vector<NamedReference<Type>*>* results, bool oneway,
std::vector<Annotation*>* annotations, const Location& location);
std::string name() const;
const std::vector<NamedReference<Type>*>& args() const;
const std::vector<NamedReference<Type>*>& results() const;
bool isOneway() const { return mOneway; }
bool overridesCppImpl(MethodImplType type) const;
bool overridesJavaImpl(MethodImplType type) const;
void cppImpl(MethodImplType type, Formatter &out) const;
void javaImpl(MethodImplType type, Formatter &out) const;
bool isHidlReserved() const { return mIsHidlReserved; }
const std::vector<Annotation *> &annotations() const;
std::vector<Reference<Type>*> getReferences();
std::vector<const Reference<Type>*> getReferences() const;
std::vector<Reference<Type>*> getStrongReferences();
std::vector<const Reference<Type>*> getStrongReferences() const;
// Make a copy with the same name, args, results, oneway, annotations.
// Implementations, serial are not copied.
Method *copySignature() const;
void setSerialId(size_t serial);
size_t getSerialId() const;
// Fill implementation for HIDL reserved methods. mIsHidlReserved will be
// set to true.
void fillImplementation(
size_t serial,
MethodImpl cppImpl,
MethodImpl javaImpl);
void generateCppReturnType(Formatter &out, bool specifyNamespaces = true) const;
void generateCppSignature(Formatter &out,
const std::string &className = "",
bool specifyNamespaces = true) const;
bool hasEmptyCppArgSignature() const;
void emitCppArgSignature(Formatter &out, bool specifyNamespaces = true) const;
void emitCppResultSignature(Formatter &out, bool specifyNamespaces = true) const;
void emitJavaArgSignature(Formatter &out) const;
void emitJavaResultSignature(Formatter &out) const;
void emitJavaSignature(Formatter& out) const;
void emitHidlDefinition(Formatter& out) const;
const NamedReference<Type>* canElideCallback() const;
bool deepIsJavaCompatible(std::unordered_set<const Type*>* visited) const;
const Location& location() const;
private:
std::string mName;
size_t mSerial = 0;
std::vector<NamedReference<Type>*>* mArgs;
std::vector<NamedReference<Type>*>* mResults;
bool mOneway;
std::vector<Annotation *> *mAnnotations;
bool mIsHidlReserved = false;
// The following fields have no meaning if mIsHidlReserved is false.
// hard-coded implementation for HIDL reserved methods.
MethodImpl mCppImpl;
MethodImpl mJavaImpl;
const Location mLocation;
DISALLOW_COPY_AND_ASSIGN(Method);
};
struct TypedVarVector : public std::vector<NamedReference<Type>*> {
TypedVarVector() = default;
bool add(NamedReference<Type>* v);
private:
std::set<std::string> mNames;
};
} // namespace android
#endif // METHOD_H_
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