1 /*
2  * Copyright (C) 2018, The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *     http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 #pragma once
17 
18 #include "aidl_language.h"
19 #include "aidl_to_cpp_common.h"
20 
21 namespace android {
22 namespace aidl {
23 namespace ndk {
24 
25 enum class StorageMode {
26   STACK,
27   ARGUMENT,      // Value for primitives, const& for larger types
28   OUT_ARGUMENT,  // Pointer to raw type
29 };
30 
31 std::string NdkHeaderFile(const AidlDefinedType& defined_type, cpp::ClassNames name,
32                           bool use_os_sep = true);
33 
34 std::string ConstantValueDecorator(const AidlTypeSpecifier& type, const std::string& raw_value);
35 
36 // Returns ::aidl::some_package::some_sub_package::foo::IFoo/BpFoo/BnFoo
37 std::string NdkFullClassName(const AidlDefinedType& type, cpp::ClassNames name);
38 
39 // Returns the corresponding Ndk type name for an AIDL type spec including
40 // array modifiers.
41 std::string NdkNameOf(const AidlTypenames& types, const AidlTypeSpecifier& aidl, StorageMode mode);
42 
43 struct CodeGeneratorContext {
44   CodeWriter& writer;
45 
46   const AidlTypenames& types;
47   const AidlTypeSpecifier& type;
48 
49   const string parcel;
50   const string var;
51 };
52 
53 void WriteToParcelFor(const CodeGeneratorContext& c);
54 void ReadFromParcelFor(const CodeGeneratorContext& c);
55 
56 // Returns argument list of a method where each arg is formatted by the fomatter
57 std::string NdkArgList(
58     const AidlTypenames& types, const AidlMethod& method,
59     std::function<std::string(const std::string& type, const std::string& name, bool isOut)>
60         formatter);
61 
FormatArgForDecl(const std::string & type,const std::string & name,bool)62 inline std::string FormatArgForDecl(const std::string& type, const std::string& name,
63                                     bool /*isOut*/) {
64   return type + " " + name;
65 }
66 
FormatArgNameUnused(const std::string & type,const std::string & name,bool)67 inline std::string FormatArgNameUnused(const std::string& type, const std::string& name,
68                                        bool /*isOut*/) {
69   return type + " /*" + name + "*/";
70 }
71 
FormatArgForCall(const std::string &,const std::string & name,bool isOut)72 inline std::string FormatArgForCall(const std::string& /*type*/, const std::string& name,
73                                     bool isOut) {
74   std::string reference_prefix = isOut ? "&" : "";
75   return reference_prefix + name;
76 }
77 
FormatArgNameOnly(const std::string &,const std::string & name,bool)78 inline std::string FormatArgNameOnly(const std::string& /*type*/, const std::string& name,
79                                      bool /*isOut*/) {
80   return name;
81 }
82 
83 // -> 'status (class::)name(type name, ...)' for a method
84 std::string NdkMethodDecl(const AidlTypenames& types, const AidlMethod& method,
85                           const std::string& clazz = "");
86 
87 }  // namespace ndk
88 }  // namespace aidl
89 }  // namespace android
90