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/*
* Copyright (C) 2020, 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.
*/
#pragma once
#include "aidl_language.h"
#include "aidl_typenames.h"
namespace android {
namespace aidl {
namespace rust {
// This header provides functions that translate AIDL things to Rust things.
enum class StorageMode {
VALUE,
DEFAULT_VALUE, // Value that implements Default::default()
IN_ARGUMENT, // Value for primitives, & for larger types
UNSIZED_ARGUMENT, // Unsized input argument, e.g., str/slice
OUT_ARGUMENT, // Mutable reference to write-only raw type
INOUT_ARGUMENT, // Mutable reference to inout argument
PARCELABLE_FIELD, // Field in a parcelable
};
enum class ReferenceMode {
VALUE,
REF,
MUT_REF,
AS_REF,
AS_DEREF,
};
enum class Lifetime {
NONE,
A,
};
inline bool IsReference(ReferenceMode ref_mode) {
switch (ref_mode) {
case ReferenceMode::REF:
case ReferenceMode::MUT_REF:
return true;
default:
return false;
}
}
std::string ConstantValueDecorator(
const AidlTypeSpecifier& type,
const std::variant<std::string, std::vector<std::string>>& raw_value);
std::string ConstantValueDecoratorRef(
const AidlTypeSpecifier& type,
const std::variant<std::string, std::vector<std::string>>& raw_value);
std::string ArrayDefaultValue(const AidlTypeSpecifier& type);
// Returns "'lifetime_name " including the initial apostrophe and the trailing space.
// Returns empty string for NONE.
std::string RustLifetimeName(Lifetime lifetime);
// Returns "<'lifetime_name>" or empty string for NONE.
std::string RustLifetimeGeneric(Lifetime lifetime);
// Returns the Rust type signature of the AIDL type spec
// This includes generic type parameters with array modifiers.
//
// The lifetime argument is used to annotate all references.
std::string RustNameOf(const AidlTypeSpecifier& aidl, const AidlTypenames& typenames,
StorageMode mode, Lifetime lifetime);
StorageMode ArgumentStorageMode(const AidlArgument& arg, const AidlTypenames& typenames);
ReferenceMode ArgumentReferenceMode(const AidlArgument& arg, const AidlTypenames& typenames);
std::string TakeReference(ReferenceMode ref_mode, const std::string& name);
bool TypeIsInterface(const AidlTypeSpecifier& type, const AidlTypenames& typenames);
bool TypeNeedsOption(const AidlTypeSpecifier& type, const AidlTypenames& typenames);
} // namespace rust
} // namespace aidl
} // namespace android
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