1 // Protocol Buffers - Google's data interchange format
2 // Copyright 2008 Google Inc. All rights reserved.
3 // http://code.google.com/p/protobuf/
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 // Author: bduff@google.com (Brian Duff)
32
33 #include <google/protobuf/compiler/javanano/javanano_extension.h>
34 #include <google/protobuf/compiler/javanano/javanano_helpers.h>
35 #include <google/protobuf/io/printer.h>
36 #include <google/protobuf/stubs/strutil.h>
37 #include <google/protobuf/wire_format.h>
38
39 namespace google {
40 namespace protobuf {
41 namespace compiler {
42 namespace javanano {
43
44 using internal::WireFormat;
45 using internal::WireFormatLite;
46
47 namespace {
48
GetTypeConstantName(const FieldDescriptor::Type type)49 const char* GetTypeConstantName(const FieldDescriptor::Type type) {
50 switch (type) {
51 case FieldDescriptor::TYPE_INT32 : return "TYPE_INT32" ;
52 case FieldDescriptor::TYPE_UINT32 : return "TYPE_UINT32" ;
53 case FieldDescriptor::TYPE_SINT32 : return "TYPE_SINT32" ;
54 case FieldDescriptor::TYPE_FIXED32 : return "TYPE_FIXED32" ;
55 case FieldDescriptor::TYPE_SFIXED32: return "TYPE_SFIXED32";
56 case FieldDescriptor::TYPE_INT64 : return "TYPE_INT64" ;
57 case FieldDescriptor::TYPE_UINT64 : return "TYPE_UINT64" ;
58 case FieldDescriptor::TYPE_SINT64 : return "TYPE_SINT64" ;
59 case FieldDescriptor::TYPE_FIXED64 : return "TYPE_FIXED64" ;
60 case FieldDescriptor::TYPE_SFIXED64: return "TYPE_SFIXED64";
61 case FieldDescriptor::TYPE_FLOAT : return "TYPE_FLOAT" ;
62 case FieldDescriptor::TYPE_DOUBLE : return "TYPE_DOUBLE" ;
63 case FieldDescriptor::TYPE_BOOL : return "TYPE_BOOL" ;
64 case FieldDescriptor::TYPE_STRING : return "TYPE_STRING" ;
65 case FieldDescriptor::TYPE_BYTES : return "TYPE_BYTES" ;
66 case FieldDescriptor::TYPE_ENUM : return "TYPE_ENUM" ;
67 case FieldDescriptor::TYPE_GROUP : return "TYPE_GROUP" ;
68 case FieldDescriptor::TYPE_MESSAGE : return "TYPE_MESSAGE" ;
69
70 // No default because we want the compiler to complain if any new
71 // types are added.
72 }
73
74 GOOGLE_LOG(FATAL) << "Can't get here.";
75 return NULL;
76 }
77
78 } // namespace
79
SetVariables(const FieldDescriptor * descriptor,const Params params,map<string,string> * variables)80 void SetVariables(const FieldDescriptor* descriptor, const Params params,
81 map<string, string>* variables) {
82 (*variables)["extends"] = ClassName(params, descriptor->containing_type());
83 (*variables)["name"] = RenameJavaKeywords(UnderscoresToCamelCase(descriptor));
84 bool repeated = descriptor->is_repeated();
85 (*variables)["repeated"] = repeated ? "Repeated" : "";
86 (*variables)["type"] = GetTypeConstantName(descriptor->type());
87 JavaType java_type = GetJavaType(descriptor->type());
88 string tag = SimpleItoa(WireFormat::MakeTag(descriptor));
89 if (java_type == JAVATYPE_MESSAGE) {
90 (*variables)["ext_type"] = "MessageTyped";
91 string message_type = ClassName(params, descriptor->message_type());
92 if (repeated) {
93 message_type += "[]";
94 }
95 (*variables)["class"] = message_type;
96 // For message typed extensions, tags_params contains a single tag
97 // for both singular and repeated cases.
98 (*variables)["tag_params"] = tag;
99 } else {
100 (*variables)["ext_type"] = "PrimitiveTyped";
101 if (!repeated) {
102 (*variables)["class"] = BoxedPrimitiveTypeName(java_type);
103 (*variables)["tag_params"] = tag;
104 } else {
105 (*variables)["class"] = PrimitiveTypeName(java_type) + "[]";
106 if (!descriptor->is_packable()) {
107 // Non-packable: nonPackedTag == tag, packedTag == 0
108 (*variables)["tag_params"] = tag + ", " + tag + ", 0";
109 } else if (descriptor->options().packed()) {
110 // Packable and packed: tag == packedTag
111 string non_packed_tag = SimpleItoa(WireFormatLite::MakeTag(
112 descriptor->number(),
113 WireFormat::WireTypeForFieldType(descriptor->type())));
114 (*variables)["tag_params"] = tag + ", " + non_packed_tag + ", " + tag;
115 } else {
116 // Packable and not packed: tag == nonPackedTag
117 string packed_tag = SimpleItoa(WireFormatLite::MakeTag(
118 descriptor->number(), WireFormatLite::WIRETYPE_LENGTH_DELIMITED));
119 (*variables)["tag_params"] = tag + ", " + tag + ", " + packed_tag;
120 }
121 }
122 }
123 }
124
125 ExtensionGenerator::
ExtensionGenerator(const FieldDescriptor * descriptor,const Params & params)126 ExtensionGenerator(const FieldDescriptor* descriptor, const Params& params)
127 : params_(params), descriptor_(descriptor) {
128 SetVariables(descriptor, params, &variables_);
129 }
130
~ExtensionGenerator()131 ExtensionGenerator::~ExtensionGenerator() {}
132
Generate(io::Printer * printer) const133 void ExtensionGenerator::Generate(io::Printer* printer) const {
134 printer->Print("\n");
135 PrintFieldComment(printer, descriptor_);
136 printer->Print(variables_,
137 "public static final com.google.protobuf.nano.Extension<\n"
138 " $extends$,\n"
139 " $class$> $name$ =\n"
140 " com.google.protobuf.nano.Extension.create$repeated$$ext_type$(\n"
141 " com.google.protobuf.nano.Extension.$type$,\n"
142 " $class$.class,\n"
143 " $tag_params$L);\n");
144 }
145
146 } // namespace javanano
147 } // namespace compiler
148 } // namespace protobuf
149 } // namespace google
150
151