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+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 Google Inc. All rights reserved.
+// http://code.google.com/p/protobuf/
+//
+// 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.
+
+// Author: kenton@google.com (Kenton Varda)
+// Based on original Protocol Buffers design by
+// Sanjay Ghemawat, Jeff Dean, and others.
+
+#include <google/protobuf/compiler/javamicro/javamicro_file.h>
+#include <google/protobuf/compiler/javamicro/javamicro_enum.h>
+#include <google/protobuf/compiler/javamicro/javamicro_helpers.h>
+#include <google/protobuf/compiler/javamicro/javamicro_message.h>
+#include <google/protobuf/compiler/code_generator.h>
+#include <google/protobuf/io/printer.h>
+#include <google/protobuf/io/zero_copy_stream.h>
+#include <google/protobuf/descriptor.pb.h>
+#include <google/protobuf/stubs/strutil.h>
+
+namespace google {
+namespace protobuf {
+namespace compiler {
+namespace javamicro {
+
+namespace {
+
+// Recursively searches the given message to see if it contains any extensions.
+bool UsesExtensions(const Message& message) {
+ const Reflection* reflection = message.GetReflection();
+
+ // We conservatively assume that unknown fields are extensions.
+ if (reflection->GetUnknownFields(message).field_count() > 0) return true;
+
+ vector<const FieldDescriptor*> fields;
+ reflection->ListFields(message, &fields);
+
+ for (int i = 0; i < fields.size(); i++) {
+ if (fields[i]->is_extension()) return true;
+
+ if (fields[i]->cpp_type() == FieldDescriptor::CPPTYPE_MESSAGE) {
+ if (fields[i]->is_repeated()) {
+ int size = reflection->FieldSize(message, fields[i]);
+ for (int j = 0; j < size; j++) {
+ const Message& sub_message =
+ reflection->GetRepeatedMessage(message, fields[i], j);
+ if (UsesExtensions(sub_message)) return true;
+ }
+ } else {
+ const Message& sub_message = reflection->GetMessage(message, fields[i]);
+ if (UsesExtensions(sub_message)) return true;
+ }
+ }
+ }
+
+ return false;
+}
+
+} // namespace
+
+FileGenerator::FileGenerator(const FileDescriptor* file, const Params& params)
+ : file_(file),
+ params_(params),
+ java_package_(FileJavaPackage(params, file)),
+ classname_(FileClassName(params, file)) {}
+
+FileGenerator::~FileGenerator() {}
+
+bool FileGenerator::Validate(string* error) {
+ // Check for extensions
+ FileDescriptorProto file_proto;
+ file_->CopyTo(&file_proto);
+ if (UsesExtensions(file_proto)) {
+ error->assign(file_->name());
+ error->append(
+ ": Java MICRO_RUNTIME does not support extensions\"");
+ return false;
+ }
+
+ // If there is no outer class name then there must be only
+ // message and no enums defined in the file scope.
+ if (!params_.has_java_outer_classname(file_->name())) {
+ if (file_->message_type_count() != 1) {
+ error->assign(file_->name());
+ error->append(
+ ": Java MICRO_RUNTIME may only have 1 message if there is no 'option java_outer_classname'\"");
+ return false;
+ }
+
+ if (file_->enum_type_count() != 0) {
+ error->assign(file_->name());
+ error->append(
+ ": Java MICRO_RUNTIME must have an 'option java_outer_classname' if file scope enums are present\"");
+ return false;
+ }
+ }
+
+ // Check that no class name matches the file's class name. This is a common
+ // problem that leads to Java compile errors that can be hard to understand.
+ // It's especially bad when using the java_multiple_files, since we would
+ // end up overwriting the outer class with one of the inner ones.
+ int found_fileName = 0;
+ for (int i = 0; i < file_->enum_type_count(); i++) {
+ if (file_->enum_type(i)->name() == classname_) {
+ found_fileName += 1;
+ }
+ }
+ for (int i = 0; i < file_->message_type_count(); i++) {
+ if (file_->message_type(i)->name() == classname_) {
+ found_fileName += 1;
+ }
+ }
+ if (file_->service_count() != 0) {
+ error->assign(file_->name());
+ error->append(
+ ": Java MICRO_RUNTIME does not support services\"");
+ return false;
+ }
+
+ if (found_fileName > 1) {
+ error->assign(file_->name());
+ error->append(
+ ": Cannot generate Java output because there is more than one class name, \"");
+ error->append(classname_);
+ error->append(
+ "\", matches the name of one of the types declared inside it. "
+ "Please either rename the type or use the java_outer_classname "
+ "option to specify a different outer class name for the .proto file."
+ " -- FIX THIS MESSAGE");
+ return false;
+ }
+ return true;
+}
+
+void FileGenerator::Generate(io::Printer* printer) {
+ // We don't import anything because we refer to all classes by their
+ // fully-qualified names in the generated source.
+ printer->Print(
+ "// Generated by the protocol buffer compiler. DO NOT EDIT!\n"
+ "\n");
+ if (!java_package_.empty()) {
+ printer->Print(
+ "package $package$;\n"
+ "\n",
+ "package", java_package_);
+ }
+
+ if (params_.has_java_outer_classname(file_->name())) {
+ printer->Print(
+ "public final class $classname$ {\n"
+ " private $classname$() {}\n",
+ "classname", classname_);
+ printer->Indent();
+ }
+
+ // -----------------------------------------------------------------
+
+ if (!params_.java_multiple_files()) {
+ for (int i = 0; i < file_->enum_type_count(); i++) {
+ EnumGenerator(file_->enum_type(i), params_).Generate(printer);
+ }
+ for (int i = 0; i < file_->message_type_count(); i++) {
+ MessageGenerator(file_->message_type(i), params_).Generate(printer);
+ }
+ }
+
+ // Static variables.
+ for (int i = 0; i < file_->message_type_count(); i++) {
+ // TODO(kenton): Reuse MessageGenerator objects?
+ MessageGenerator(file_->message_type(i), params_).GenerateStaticVariables(printer);
+ }
+
+ if (params_.has_java_outer_classname(file_->name())) {
+ printer->Outdent();
+ printer->Print(
+ "}\n");
+ }
+}
+
+template<typename GeneratorClass, typename DescriptorClass>
+static void GenerateSibling(const string& package_dir,
+ const string& java_package,
+ const DescriptorClass* descriptor,
+ OutputDirectory* output_directory,
+ vector<string>* file_list,
+ const Params& params) {
+ string filename = package_dir + descriptor->name() + ".java";
+ file_list->push_back(filename);
+
+ scoped_ptr<io::ZeroCopyOutputStream> output(
+ output_directory->Open(filename));
+ io::Printer printer(output.get(), '$');
+
+ printer.Print(
+ "// Generated by the protocol buffer compiler. DO NOT EDIT!\n"
+ "\n");
+ if (!java_package.empty()) {
+ printer.Print(
+ "package $package$;\n"
+ "\n",
+ "package", java_package);
+ }
+
+ GeneratorClass(descriptor, params).Generate(&printer);
+}
+
+void FileGenerator::GenerateSiblings(const string& package_dir,
+ OutputDirectory* output_directory,
+ vector<string>* file_list) {
+ if (params_.java_multiple_files()) {
+ for (int i = 0; i < file_->enum_type_count(); i++) {
+ GenerateSibling<EnumGenerator>(package_dir, java_package_,
+ file_->enum_type(i),
+ output_directory, file_list, params_);
+ }
+ for (int i = 0; i < file_->message_type_count(); i++) {
+ GenerateSibling<MessageGenerator>(package_dir, java_package_,
+ file_->message_type(i),
+ output_directory, file_list, params_);
+ }
+ }
+}
+
+} // namespace javamicro
+} // namespace compiler
+} // namespace protobuf
+} // namespace google
generated by cgit v1.1 at 2024-05-19 21:31:46 +0000