Line data Source code
1 : // Protocol Buffers - Google's data interchange format
2 : // Copyright 2008 Google Inc. All rights reserved.
3 : // https://developers.google.com/protocol-buffers/
4 : //
5 : // Redistribution and use in source and binary forms, with or without
6 : // modification, are permitted provided that the following conditions are
7 : // met:
8 : //
9 : // * Redistributions of source code must retain the above copyright
10 : // notice, this list of conditions and the following disclaimer.
11 : // * Redistributions in binary form must reproduce the above
12 : // copyright notice, this list of conditions and the following disclaimer
13 : // in the documentation and/or other materials provided with the
14 : // distribution.
15 : // * Neither the name of Google Inc. nor the names of its
16 : // contributors may be used to endorse or promote products derived from
17 : // this software without specific prior written permission.
18 : //
19 : // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 : // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 : // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 : // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 : // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 : // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 : // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 : // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 : // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 : // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 : // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 :
31 : #include <iostream>
32 :
33 : #include <google/protobuf/compiler/objectivec/objectivec_extension.h>
34 : #include <google/protobuf/compiler/objectivec/objectivec_helpers.h>
35 : #include <google/protobuf/descriptor.pb.h>
36 : #include <google/protobuf/stubs/strutil.h>
37 : #include <google/protobuf/io/printer.h>
38 :
39 : namespace google {
40 : namespace protobuf {
41 : namespace compiler {
42 : namespace objectivec {
43 :
44 0 : ExtensionGenerator::ExtensionGenerator(const string& root_class_name,
45 : const FieldDescriptor* descriptor)
46 : : method_name_(ExtensionMethodName(descriptor)),
47 0 : root_class_and_method_name_(root_class_name + "_" + method_name_),
48 0 : descriptor_(descriptor) {
49 0 : if (descriptor->is_map()) {
50 : // NOTE: src/google/protobuf/compiler/plugin.cc makes use of cerr for some
51 : // error cases, so it seems to be ok to use as a back door for errors.
52 0 : cerr << "error: Extension is a map<>!"
53 0 : << " That used to be blocked by the compiler." << endl;
54 0 : cerr.flush();
55 0 : abort();
56 : }
57 0 : }
58 :
59 0 : ExtensionGenerator::~ExtensionGenerator() {}
60 :
61 0 : void ExtensionGenerator::GenerateMembersHeader(io::Printer* printer) {
62 : map<string, string> vars;
63 0 : vars["method_name"] = method_name_;
64 0 : SourceLocation location;
65 0 : if (descriptor_->GetSourceLocation(&location)) {
66 0 : vars["comments"] = BuildCommentsString(location);
67 : } else {
68 0 : vars["comments"] = "";
69 : }
70 : printer->Print(vars,
71 : "$comments$"
72 0 : "+ (GPBExtensionDescriptor *)$method_name$;\n");
73 0 : }
74 :
75 0 : void ExtensionGenerator::GenerateStaticVariablesInitialization(
76 : io::Printer* printer) {
77 : map<string, string> vars;
78 0 : vars["root_class_and_method_name"] = root_class_and_method_name_;
79 0 : vars["extended_type"] = ClassName(descriptor_->containing_type());
80 0 : vars["number"] = SimpleItoa(descriptor_->number());
81 :
82 0 : std::vector<string> options;
83 0 : if (descriptor_->is_repeated()) options.push_back("GPBExtensionRepeated");
84 0 : if (descriptor_->is_packed()) options.push_back("GPBExtensionPacked");
85 0 : if (descriptor_->containing_type()->options().message_set_wire_format())
86 0 : options.push_back("GPBExtensionSetWireFormat");
87 :
88 0 : vars["options"] = BuildFlagsString(options);
89 :
90 0 : ObjectiveCType objc_type = GetObjectiveCType(descriptor_);
91 : string singular_type;
92 0 : if (objc_type == OBJECTIVECTYPE_MESSAGE) {
93 0 : vars["type"] = string("GPBStringifySymbol(") +
94 0 : ClassName(descriptor_->message_type()) + ")";
95 : } else {
96 0 : vars["type"] = "NULL";
97 : }
98 :
99 0 : vars["default_name"] = GPBGenericValueFieldName(descriptor_);
100 0 : if (descriptor_->is_repeated()) {
101 0 : vars["default"] = "nil";
102 : } else {
103 0 : vars["default"] = DefaultValue(descriptor_);
104 : }
105 0 : string type = GetCapitalizedType(descriptor_);
106 0 : vars["extension_type"] = string("GPBDataType") + type;
107 :
108 0 : if (objc_type == OBJECTIVECTYPE_ENUM) {
109 0 : vars["enum_desc_func_name"] =
110 0 : EnumName(descriptor_->enum_type()) + "_EnumDescriptor";
111 : } else {
112 0 : vars["enum_desc_func_name"] = "NULL";
113 : }
114 :
115 : printer->Print(vars,
116 : "{\n"
117 : " .singletonName = GPBStringifySymbol($root_class_and_method_name$),\n"
118 : " .dataType = $extension_type$,\n"
119 : " .extendedClass = GPBStringifySymbol($extended_type$),\n"
120 : " .fieldNumber = $number$,\n"
121 : " .defaultValue.$default_name$ = $default$,\n"
122 : " .messageOrGroupClassName = $type$,\n"
123 : " .options = $options$,\n"
124 : " .enumDescriptorFunc = $enum_desc_func_name$,\n"
125 0 : "},\n");
126 0 : }
127 :
128 0 : void ExtensionGenerator::GenerateRegistrationSource(io::Printer* printer) {
129 : printer->Print(
130 : "[registry addExtension:$root_class_and_method_name$];\n",
131 0 : "root_class_and_method_name", root_class_and_method_name_);
132 0 : }
133 : } // namespace objectivec
134 : } // namespace compiler
135 : } // namespace protobuf
136 51 : } // namespace google
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