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
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
|
// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. All rights reserved.
// https://developers.google.com/protocol-buffers/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include <map>
#include <string>
#include <google/protobuf/compiler/objectivec/objectivec_enum.h>
#include <google/protobuf/compiler/objectivec/objectivec_helpers.h>
#include <google/protobuf/io/printer.h>
#include <google/protobuf/stubs/strutil.h>
namespace google {
namespace protobuf {
namespace compiler {
namespace objectivec {
EnumGenerator::EnumGenerator(const EnumDescriptor* descriptor)
: descriptor_(descriptor),
name_(EnumName(descriptor_)) {
for (int i = 0; i < descriptor_->value_count(); i++) {
const EnumValueDescriptor* value = descriptor_->value(i);
const EnumValueDescriptor* canonical_value =
descriptor_->FindValueByNumber(value->number());
if (value == canonical_value) {
base_values_.push_back(value);
}
all_values_.push_back(value);
}
}
EnumGenerator::~EnumGenerator() {}
void EnumGenerator::GenerateHeader(io::Printer* printer) {
string enum_comments;
SourceLocation location;
if (descriptor_->GetSourceLocation(&location)) {
enum_comments = BuildCommentsString(location, true);
} else {
enum_comments = "";
}
printer->Print(
"#pragma mark - Enum $name$\n"
"\n",
"name", name_);
printer->Print("$comments$typedef$deprecated_attribute$ GPB_ENUM($name$) {\n",
"comments", enum_comments,
"deprecated_attribute", GetOptionalDeprecatedAttribute(descriptor_, descriptor_->file()),
"name", name_);
printer->Indent();
if (HasPreservingUnknownEnumSemantics(descriptor_->file())) {
// Include the unknown value.
printer->Print(
"/**\n"
" * Value used if any message's field encounters a value that is not defined\n"
" * by this enum. The message will also have C functions to get/set the rawValue\n"
" * of the field.\n"
" **/\n"
"$name$_GPBUnrecognizedEnumeratorValue = kGPBUnrecognizedEnumeratorValue,\n",
"name", name_);
}
for (int i = 0; i < all_values_.size(); i++) {
SourceLocation location;
if (all_values_[i]->GetSourceLocation(&location)) {
string comments = BuildCommentsString(location, true).c_str();
if (comments.length() > 0) {
if (i > 0) {
printer->Print("\n");
}
printer->Print(comments.c_str());
}
}
printer->Print(
"$name$$deprecated_attribute$ = $value$,\n",
"name", EnumValueName(all_values_[i]),
"deprecated_attribute", GetOptionalDeprecatedAttribute(all_values_[i]),
"value", SimpleItoa(all_values_[i]->number()));
}
printer->Outdent();
printer->Print(
"};\n"
"\n"
"GPBEnumDescriptor *$name$_EnumDescriptor(void);\n"
"\n"
"/**\n"
" * Checks to see if the given value is defined by the enum or was not known at\n"
" * the time this source was generated.\n"
" **/\n"
"BOOL $name$_IsValidValue(int32_t value);\n"
"\n",
"name", name_);
}
void EnumGenerator::GenerateSource(io::Printer* printer) {
printer->Print(
"#pragma mark - Enum $name$\n"
"\n",
"name", name_);
// Note: For the TextFormat decode info, we can't use the enum value as
// the key because protocol buffer enums have 'allow_alias', which lets
// a value be used more than once. Instead, the index into the list of
// enum value descriptions is used. Note: start with -1 so the first one
// will be zero.
TextFormatDecodeData text_format_decode_data;
int enum_value_description_key = -1;
string text_blob;
for (int i = 0; i < all_values_.size(); i++) {
++enum_value_description_key;
string short_name(EnumValueShortName(all_values_[i]));
text_blob += short_name + '\0';
if (UnCamelCaseEnumShortName(short_name) != all_values_[i]->name()) {
text_format_decode_data.AddString(enum_value_description_key, short_name,
all_values_[i]->name());
}
}
printer->Print(
"GPBEnumDescriptor *$name$_EnumDescriptor(void) {\n"
" static _Atomic(GPBEnumDescriptor*) descriptor = nil;\n"
" if (!descriptor) {\n",
"name", name_);
static const int kBytesPerLine = 40; // allow for escaping
printer->Print(
" static const char *valueNames =");
for (int i = 0; i < text_blob.size(); i += kBytesPerLine) {
printer->Print(
"\n \"$data$\"",
"data", EscapeTrigraphs(CEscape(text_blob.substr(i, kBytesPerLine))));
}
printer->Print(
";\n"
" static const int32_t values[] = {\n");
for (int i = 0; i < all_values_.size(); i++) {
printer->Print(" $name$,\n", "name", EnumValueName(all_values_[i]));
}
printer->Print(" };\n");
if (text_format_decode_data.num_entries() == 0) {
printer->Print(
" GPBEnumDescriptor *worker =\n"
" [GPBEnumDescriptor allocDescriptorForName:GPBNSStringifySymbol($name$)\n"
" valueNames:valueNames\n"
" values:values\n"
" count:(uint32_t)(sizeof(values) / sizeof(int32_t))\n"
" enumVerifier:$name$_IsValidValue];\n",
"name", name_);
} else {
printer->Print(
" static const char *extraTextFormatInfo = \"$extraTextFormatInfo$\";\n"
" GPBEnumDescriptor *worker =\n"
" [GPBEnumDescriptor allocDescriptorForName:GPBNSStringifySymbol($name$)\n"
" valueNames:valueNames\n"
" values:values\n"
" count:(uint32_t)(sizeof(values) / sizeof(int32_t))\n"
" enumVerifier:$name$_IsValidValue\n"
" extraTextFormatInfo:extraTextFormatInfo];\n",
"name", name_,
"extraTextFormatInfo", CEscape(text_format_decode_data.Data()));
}
printer->Print(
" GPBEnumDescriptor *expected = nil;\n"
" if (!atomic_compare_exchange_strong(&descriptor, &expected, worker)) {\n"
" [worker release];\n"
" }\n"
" }\n"
" return descriptor;\n"
"}\n\n");
printer->Print(
"BOOL $name$_IsValidValue(int32_t value__) {\n"
" switch (value__) {\n",
"name", name_);
for (int i = 0; i < base_values_.size(); i++) {
printer->Print(
" case $name$:\n",
"name", EnumValueName(base_values_[i]));
}
printer->Print(
" return YES;\n"
" default:\n"
" return NO;\n"
" }\n"
"}\n\n");
}
} // namespace objectivec
} // namespace compiler
} // namespace protobuf
} // namespace google
|
