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
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
|
/*
* Copyright (C) 2015 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 "JavaClassGenerator.h"
#include "NameMangler.h"
#include "Resource.h"
#include "ResourceTable.h"
#include "ResourceValues.h"
#include "StringPiece.h"
#include <algorithm>
#include <ostream>
#include <set>
#include <sstream>
#include <tuple>
namespace aapt {
// The number of attributes to emit per line in a Styleable array.
constexpr size_t kAttribsPerLine = 4;
JavaClassGenerator::JavaClassGenerator(const std::shared_ptr<const ResourceTable>& table,
Options options) :
mTable(table), mOptions(options) {
}
static void generateHeader(std::ostream& out, const StringPiece16& package) {
out << "/* AUTO-GENERATED FILE. DO NOT MODIFY.\n"
" *\n"
" * This class was automatically generated by the\n"
" * aapt tool from the resource data it found. It\n"
" * should not be modified by hand.\n"
" */\n\n";
out << "package " << package << ";"
<< std::endl
<< std::endl;
}
static const std::set<StringPiece16> sJavaIdentifiers = {
u"abstract", u"assert", u"boolean", u"break", u"byte",
u"case", u"catch", u"char", u"class", u"const", u"continue",
u"default", u"do", u"double", u"else", u"enum", u"extends",
u"final", u"finally", u"float", u"for", u"goto", u"if",
u"implements", u"import", u"instanceof", u"int", u"interface",
u"long", u"native", u"new", u"package", u"private", u"protected",
u"public", u"return", u"short", u"static", u"strictfp", u"super",
u"switch", u"synchronized", u"this", u"throw", u"throws",
u"transient", u"try", u"void", u"volatile", u"while", u"true",
u"false", u"null"
};
static bool isValidSymbol(const StringPiece16& symbol) {
return sJavaIdentifiers.find(symbol) == sJavaIdentifiers.end();
}
/*
* Java symbols can not contain . or -, but those are valid in a resource name.
* Replace those with '_'.
*/
static std::u16string transform(const StringPiece16& symbol) {
std::u16string output = symbol.toString();
for (char16_t& c : output) {
if (c == u'.' || c == u'-') {
c = u'_';
}
}
return output;
}
struct GenArgs : ValueVisitorArgs {
GenArgs(std::ostream* o, const std::u16string* p, std::u16string* e) :
out(o), package(p), entryName(e) {
}
std::ostream* out;
const std::u16string* package;
std::u16string* entryName;
};
void JavaClassGenerator::visit(const Styleable& styleable, ValueVisitorArgs& a) {
const StringPiece finalModifier = mOptions.useFinal ? " final" : "";
std::ostream* out = static_cast<GenArgs&>(a).out;
const std::u16string* package = static_cast<GenArgs&>(a).package;
std::u16string* entryName = static_cast<GenArgs&>(a).entryName;
// This must be sorted by resource ID.
std::vector<std::pair<ResourceId, ResourceNameRef>> sortedAttributes;
sortedAttributes.reserve(styleable.entries.size());
for (const auto& attr : styleable.entries) {
// If we are not encoding final attributes, the styleable entry may have no ID
// if we are building a static library.
assert((!mOptions.useFinal || attr.id.isValid()) && "no ID set for Styleable entry");
assert(attr.name.isValid() && "no name set for Styleable entry");
sortedAttributes.emplace_back(attr.id, attr.name);
}
std::sort(sortedAttributes.begin(), sortedAttributes.end());
// First we emit the array containing the IDs of each attribute.
*out << " "
<< "public static final int[] " << transform(*entryName) << " = {";
const size_t attrCount = sortedAttributes.size();
for (size_t i = 0; i < attrCount; i++) {
if (i % kAttribsPerLine == 0) {
*out << std::endl << " ";
}
*out << sortedAttributes[i].first;
if (i != attrCount - 1) {
*out << ", ";
}
}
*out << std::endl << " };" << std::endl;
// Now we emit the indices into the array.
for (size_t i = 0; i < attrCount; i++) {
*out << " "
<< "public static" << finalModifier
<< " int " << transform(*entryName);
// We may reference IDs from other packages, so prefix the entry name with
// the package.
const ResourceNameRef& itemName = sortedAttributes[i].second;
if (itemName.package != *package) {
*out << "_" << transform(itemName.package);
}
*out << "_" << transform(itemName.entry) << " = " << i << ";" << std::endl;
}
}
bool JavaClassGenerator::generateType(const std::u16string& package, size_t packageId,
const ResourceTableType& type, std::ostream& out) {
const StringPiece finalModifier = mOptions.useFinal ? " final" : "";
std::u16string unmangledPackage;
std::u16string unmangledName;
for (const auto& entry : type.entries) {
ResourceId id = { packageId, type.typeId, entry->entryId };
assert(id.isValid());
unmangledName = entry->name;
if (NameMangler::unmangle(&unmangledName, &unmangledPackage)) {
// The entry name was mangled, and we successfully unmangled it.
// Check that we want to emit this symbol.
if (package != unmangledPackage) {
// Skip the entry if it doesn't belong to the package we're writing.
continue;
}
} else {
if (package != mTable->getPackage()) {
// We are processing a mangled package name,
// but this is a non-mangled resource.
continue;
}
}
if (!isValidSymbol(unmangledName)) {
ResourceNameRef resourceName = { package, type.type, unmangledName };
std::stringstream err;
err << "invalid symbol name '" << resourceName << "'";
mError = err.str();
return false;
}
if (type.type == ResourceType::kStyleable) {
assert(!entry->values.empty());
entry->values.front().value->accept(*this, GenArgs{ &out, &package, &unmangledName });
} else {
out << " " << "public static" << finalModifier
<< " int " << transform(unmangledName) << " = " << id << ";" << std::endl;
}
}
return true;
}
bool JavaClassGenerator::generate(const std::u16string& package, std::ostream& out) {
const size_t packageId = mTable->getPackageId();
generateHeader(out, package);
out << "public final class R {" << std::endl;
for (const auto& type : *mTable) {
out << " public static final class " << type->type << " {" << std::endl;
if (!generateType(package, packageId, *type, out)) {
return false;
}
out << " }" << std::endl;
}
out << "}" << std::endl;
return true;
}
} // namespace aapt
|
