1 // Protocol Buffers - Google's data interchange format
2 // Copyright 2008 Google Inc. All rights reserved.
3 // http://code.google.com/p/protobuf/
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18 //
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30
31 // Author: kenton@google.com (Kenton Varda)
32 // Based on original Protocol Buffers design by
33 // Sanjay Ghemawat, Jeff Dean, and others.
34
35 #include <google/protobuf/compiler/javanano/javanano_params.h>
36 #include <google/protobuf/compiler/javanano/javanano_generator.h>
37 #include <google/protobuf/compiler/javanano/javanano_file.h>
38 #include <google/protobuf/compiler/javanano/javanano_helpers.h>
39 #include <google/protobuf/io/printer.h>
40 #include <google/protobuf/io/zero_copy_stream.h>
41 #include <google/protobuf/descriptor.pb.h>
42 #include <google/protobuf/stubs/strutil.h>
43
44 namespace google {
45 namespace protobuf {
46 namespace compiler {
47 namespace javanano {
48
49 namespace {
50
TrimString(const string & s)51 string TrimString(const string& s) {
52 string::size_type start = s.find_first_not_of(" \n\r\t");
53 if (start == string::npos) {
54 return "";
55 }
56 string::size_type end = s.find_last_not_of(" \n\r\t") + 1;
57 return s.substr(start, end - start);
58 }
59
60 } // namespace
61
UpdateParamsRecursively(Params & params,const FileDescriptor * file)62 void UpdateParamsRecursively(Params& params,
63 const FileDescriptor* file) {
64 // Add any parameters for this file
65 if (file->options().has_java_outer_classname()) {
66 params.set_java_outer_classname(
67 file->name(), file->options().java_outer_classname());
68 }
69 if (file->options().has_java_package()) {
70 params.set_java_package(
71 file->name(), file->options().java_package());
72 }
73 if (file->options().has_java_multiple_files()) {
74 params.set_java_multiple_files(
75 file->name(), file->options().java_multiple_files());
76 }
77
78 // Loop through all dependent files recursively
79 // adding dep
80 for (int i = 0; i < file->dependency_count(); i++) {
81 UpdateParamsRecursively(params, file->dependency(i));
82 }
83 }
84
JavaNanoGenerator()85 JavaNanoGenerator::JavaNanoGenerator() {}
~JavaNanoGenerator()86 JavaNanoGenerator::~JavaNanoGenerator() {}
87
Generate(const FileDescriptor * file,const string & parameter,OutputDirectory * output_directory,string * error) const88 bool JavaNanoGenerator::Generate(const FileDescriptor* file,
89 const string& parameter,
90 OutputDirectory* output_directory,
91 string* error) const {
92 vector<pair<string, string> > options;
93
94 ParseGeneratorParameter(parameter, &options);
95
96 // -----------------------------------------------------------------
97 // parse generator options
98
99 // Name a file where we will write a list of generated file names, one
100 // per line.
101 string output_list_file;
102 Params params(file->name());
103
104 // Update per file params
105 UpdateParamsRecursively(params, file);
106
107 // Replace any existing options with ones from command line
108 for (int i = 0; i < options.size(); i++) {
109 string option_name = TrimString(options[i].first);
110 string option_value = TrimString(options[i].second);
111 if (option_name == "output_list_file") {
112 output_list_file = option_value;
113 } else if (option_name == "java_package") {
114 vector<string> parts;
115 SplitStringUsing(option_value, "|", &parts);
116 if (parts.size() != 2) {
117 *error = "Bad java_package, expecting filename|PackageName found '"
118 + option_value + "'";
119 return false;
120 }
121 params.set_java_package(parts[0], parts[1]);
122 } else if (option_name == "java_outer_classname") {
123 vector<string> parts;
124 SplitStringUsing(option_value, "|", &parts);
125 if (parts.size() != 2) {
126 *error = "Bad java_outer_classname, "
127 "expecting filename|ClassName found '"
128 + option_value + "'";
129 return false;
130 }
131 params.set_java_outer_classname(parts[0], parts[1]);
132 } else if (option_name == "store_unknown_fields") {
133 params.set_store_unknown_fields(option_value == "true");
134 } else if (option_name == "java_multiple_files") {
135 params.set_override_java_multiple_files(option_value == "true");
136 } else if (option_name == "java_nano_generate_has") {
137 params.set_generate_has(option_value == "true");
138 } else if (option_name == "enum_style") {
139 params.set_java_enum_style(option_value == "java");
140 } else if (option_name == "optional_field_style") {
141 params.set_optional_field_accessors(option_value == "accessors");
142 params.set_use_reference_types_for_primitives(option_value == "reftypes"
143 || option_value == "reftypes_compat_mode");
144 params.set_reftypes_primitive_enums(
145 option_value == "reftypes_compat_mode");
146 if (option_value == "reftypes_compat_mode") {
147 params.set_generate_clear(false);
148 }
149 } else if (option_name == "generate_equals") {
150 params.set_generate_equals(option_value == "true");
151 } else if (option_name == "ignore_services") {
152 params.set_ignore_services(option_value == "true");
153 } else if (option_name == "parcelable_messages") {
154 params.set_parcelable_messages(option_value == "true");
155 } else if (option_name == "generate_clone") {
156 params.set_generate_clone(option_value == "true");
157 } else if (option_name == "generate_intdefs") {
158 params.set_generate_intdefs(option_value == "true");
159 } else if (option_name == "generate_clear") {
160 params.set_generate_clear(option_value == "true");
161 } else if (option_name == "bytes_offset_length") {
162 params.set_bytes_offset_length(option_value == "true");
163 } else {
164 *error = "Ignore unknown javanano generator option: " + option_name;
165 }
166 }
167
168 // Check illegal parameter combinations
169 // Note: the enum-like optional_field_style generator param ensures
170 // that we can never have illegal combinations of field styles
171 // (e.g. reftypes and accessors can't be on at the same time).
172 if (params.generate_has()
173 && (params.optional_field_accessors()
174 || params.use_reference_types_for_primitives())) {
175 error->assign("java_nano_generate_has=true cannot be used in conjunction"
176 " with optional_field_style=accessors or optional_field_style=reftypes");
177 return false;
178 }
179
180 // Theoretically possible, but not implemented.
181 if (params.bytes_offset_length()
182 && (params.optional_field_accessors() || params.generate_equals())) {
183 error->assign("bytes_offset_length=true cannot be used in conjunction"
184 " with optional_field_style=accessors or generate_equals=true");
185 return false;
186 }
187
188 // -----------------------------------------------------------------
189
190 FileGenerator file_generator(file, params);
191 if (!file_generator.Validate(error)) {
192 return false;
193 }
194
195 string package_dir =
196 StringReplace(file_generator.java_package(), ".", "/", true);
197 if (!package_dir.empty()) package_dir += "/";
198
199 vector<string> all_files;
200
201 if (IsOuterClassNeeded(params, file)) {
202 string java_filename = package_dir;
203 java_filename += file_generator.classname();
204 java_filename += ".java";
205 all_files.push_back(java_filename);
206
207 // Generate main java file.
208 scoped_ptr<io::ZeroCopyOutputStream> output(
209 output_directory->Open(java_filename));
210 io::Printer printer(output.get(), '$');
211 file_generator.Generate(&printer);
212 }
213
214 // Generate sibling files.
215 file_generator.GenerateSiblings(package_dir, output_directory, &all_files);
216
217 // Generate output list if requested.
218 if (!output_list_file.empty()) {
219 // Generate output list. This is just a simple text file placed in a
220 // deterministic location which lists the .java files being generated.
221 scoped_ptr<io::ZeroCopyOutputStream> srclist_raw_output(
222 output_directory->Open(output_list_file));
223 io::Printer srclist_printer(srclist_raw_output.get(), '$');
224 for (int i = 0; i < all_files.size(); i++) {
225 srclist_printer.Print("$filename$\n", "filename", all_files[i]);
226 }
227 }
228
229 return true;
230 }
231
232 } // namespace java
233 } // namespace compiler
234 } // namespace protobuf
235 } // namespace google
236