1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
|
/*
* Copyright (C) 2018, 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 "aidl_typenames.h"
#include "aidl_language.h"
#include "logging.h"
#include <android-base/strings.h>
#include <map>
#include <memory>
#include <set>
#include <string>
#include <utility>
#include <vector>
using android::base::Split;
using std::make_pair;
using std::map;
using std::pair;
using std::set;
using std::string;
using std::unique_ptr;
using std::vector;
namespace android {
namespace aidl {
// The built-in AIDL types..
static const set<string> kBuiltinTypes = {
"void", "boolean", "byte", "char", "int",
"long", "float", "double", "String", "List",
"Map", "IBinder", "FileDescriptor", "CharSequence", "ParcelFileDescriptor"};
static const set<string> kPrimitiveTypes = {"void", "boolean", "byte", "char",
"int", "long", "float", "double"};
// Note: these types may look wrong because they look like Java
// types, but they have long been supported from the time when Java
// was the only target language of this compiler. They are added here for
// backwards compatibility, but we internally treat them as List and Map,
// respectively.
static const map<string, string> kJavaLikeTypeToAidlType = {
{"java.util.List", "List"},
{"java.util.Map", "Map"},
{"android.os.ParcelFileDescriptor", "ParcelFileDescriptor"},
};
// Package name and type name can't be one of these as they are keywords
// in Java and C++. Using these names will eventually cause compilation error,
// so checking this here is not a must have, but early detection of errors
// is always better.
static const set<string> kInvalidNames = {
"break", "case", "catch", "char", "class", "continue", "default",
"do", "double", "else", "enum", "false", "float", "for",
"goto", "if", "int", "long", "new", "private", "protected",
"public", "return", "short", "static", "switch", "this", "throw",
"true", "try", "void", "volatile", "while"};
static bool IsValidName(const string& name) {
vector<string> pieces = Split(name, ".");
for (const auto& piece : pieces) {
if (kInvalidNames.find(piece) != kInvalidNames.end()) {
return false;
}
}
return true;
}
bool AidlTypenames::AddDefinedType(unique_ptr<AidlDefinedType> type) {
const string name = type->GetCanonicalName();
if (defined_types_.find(name) != defined_types_.end()) {
return false;
}
if (!IsValidName(type->GetPackage()) || !IsValidName(type->GetName())) {
return false;
}
defined_types_.emplace(name, std::move(type));
return true;
}
bool AidlTypenames::AddPreprocessedType(unique_ptr<AidlDefinedType> type) {
const string name = type->GetCanonicalName();
if (preprocessed_types_.find(name) != preprocessed_types_.end()) {
return false;
}
if (!IsValidName(type->GetPackage()) || !IsValidName(type->GetName())) {
return false;
}
preprocessed_types_.insert(make_pair(name, std::move(type)));
return true;
}
bool AidlTypenames::IsBuiltinTypename(const string& type_name) {
return kBuiltinTypes.find(type_name) != kBuiltinTypes.end() ||
kJavaLikeTypeToAidlType.find(type_name) != kJavaLikeTypeToAidlType.end();
}
bool AidlTypenames::IsPrimitiveTypename(const string& type_name) {
return kPrimitiveTypes.find(type_name) != kPrimitiveTypes.end();
}
const AidlDefinedType* AidlTypenames::TryGetDefinedType(const string& type_name) const {
// Do the exact match first.
auto found_def = defined_types_.find(type_name);
if (found_def != defined_types_.end()) {
return found_def->second.get();
}
auto found_prep = preprocessed_types_.find(type_name);
if (found_prep != preprocessed_types_.end()) {
return found_prep->second.get();
}
// Then match with the class name. Defined types has higher priority than
// types from the preprocessed file.
for (auto it = defined_types_.begin(); it != defined_types_.end(); it++) {
if (it->second->GetName() == type_name) {
return it->second.get();
}
}
for (auto it = preprocessed_types_.begin(); it != preprocessed_types_.end(); it++) {
if (it->second->GetName() == type_name) {
return it->second.get();
}
}
return nullptr;
}
pair<string, bool> AidlTypenames::ResolveTypename(const string& type_name) const {
if (IsBuiltinTypename(type_name)) {
auto found = kJavaLikeTypeToAidlType.find(type_name);
if (found != kJavaLikeTypeToAidlType.end()) {
return make_pair(found->second, true);
}
return make_pair(type_name, true);
}
const AidlDefinedType* defined_type = TryGetDefinedType(type_name);
if (defined_type != nullptr) {
return make_pair(defined_type->GetCanonicalName(), true);
} else {
return make_pair(type_name, false);
}
}
// Only T[], List, Map, ParcelFileDescriptor and Parcelable can be an out parameter.
bool AidlTypenames::CanBeOutParameter(const AidlTypeSpecifier& type) const {
const string& name = type.GetName();
if (IsBuiltinTypename(name)) {
return type.IsArray() || type.GetName() == "List" || type.GetName() == "Map" ||
type.GetName() == "ParcelFileDescriptor";
}
const AidlDefinedType* t = TryGetDefinedType(type.GetName());
CHECK(t != nullptr) << "Unrecognized type: '" << type.GetName() << "'";
return t->AsParcelable() != nullptr;
}
void AidlTypenames::IterateTypes(const std::function<void(const AidlDefinedType&)>& body) const {
for (const auto& kv : defined_types_) {
body(*kv.second);
}
for (const auto& kv : preprocessed_types_) {
body(*kv.second);
}
}
void AidlTypenames::Reset() {
defined_types_.clear();
preprocessed_types_.clear();
}
} // namespace aidl
} // namespace android
|
