140 lines
4.8 KiB
C++
140 lines
4.8 KiB
C++
// Protocol Buffers - Google's data interchange format
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// Copyright 2008 Google Inc. All rights reserved.
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//
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file or at
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// https://developers.google.com/open-source/licenses/bsd
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// Author: dweis@google.com (Daniel Weis)
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// Based on original Protocol Buffers design by
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// Sanjay Ghemawat, Jeff Dean, and others.
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#include "google/protobuf/compiler/java/lite/message_builder.h"
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#include <string>
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#include "absl/container/flat_hash_map.h"
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#include "absl/strings/str_cat.h"
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#include "google/protobuf/compiler/java/context.h"
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#include "google/protobuf/compiler/java/doc_comment.h"
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#include "google/protobuf/compiler/java/field_common.h"
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#include "google/protobuf/compiler/java/helpers.h"
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#include "google/protobuf/compiler/java/lite/enum.h"
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#include "google/protobuf/compiler/java/lite/make_field_generators.h"
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#include "google/protobuf/compiler/java/name_resolver.h"
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#include "google/protobuf/descriptor.pb.h"
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#include "google/protobuf/io/printer.h"
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// Must be last.
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#include "google/protobuf/port_def.inc"
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namespace google {
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namespace protobuf {
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namespace compiler {
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namespace java {
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MessageBuilderLiteGenerator::MessageBuilderLiteGenerator(
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const Descriptor* descriptor, Context* context)
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: descriptor_(descriptor),
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context_(context),
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name_resolver_(context->GetNameResolver()),
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field_generators_(MakeImmutableFieldLiteGenerators(descriptor, context)) {
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ABSL_CHECK(!HasDescriptorMethods(descriptor->file(), context->EnforceLite()))
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<< "Generator factory error: A lite message generator is used to "
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"generate non-lite messages.";
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for (int i = 0; i < descriptor_->field_count(); i++) {
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if (IsRealOneof(descriptor_->field(i))) {
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const OneofDescriptor* oneof = descriptor_->field(i)->containing_oneof();
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ABSL_CHECK(oneofs_.emplace(oneof->index(), oneof).first->second == oneof);
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}
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}
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}
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MessageBuilderLiteGenerator::~MessageBuilderLiteGenerator() {}
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void MessageBuilderLiteGenerator::Generate(io::Printer* printer) {
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WriteMessageDocComment(printer, descriptor_, context_->options());
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absl::flat_hash_map<absl::string_view, std::string> vars = {
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{"{", ""},
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{"}", ""},
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{"classname", name_resolver_->GetImmutableClassName(descriptor_)},
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{"extra_interfaces", ExtraBuilderInterfaces(descriptor_)},
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{"extendible",
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descriptor_->extension_range_count() > 0 ? "Extendable" : ""},
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};
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printer->Print(
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vars,
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"public static final class ${$Builder$}$ extends\n"
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" com.google.protobuf.GeneratedMessageLite.$extendible$Builder<\n"
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" $classname$, Builder> implements\n"
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" $extra_interfaces$\n"
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" $classname$OrBuilder {\n");
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printer->Annotate("{", "}", descriptor_);
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printer->Indent();
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GenerateCommonBuilderMethods(printer);
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// oneof
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for (auto& kv : oneofs_) {
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const OneofDescriptor* oneof = kv.second;
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vars["oneof_name"] = context_->GetOneofGeneratorInfo(oneof)->name;
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vars["oneof_capitalized_name"] =
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context_->GetOneofGeneratorInfo(oneof)->capitalized_name;
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vars["oneof_index"] = absl::StrCat(oneof->index());
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// oneofCase() and clearOneof()
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printer->Print(vars,
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"@java.lang.Override\n"
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"public $oneof_capitalized_name$Case\n"
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" ${$get$oneof_capitalized_name$Case$}$() {\n"
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" return instance.get$oneof_capitalized_name$Case();\n"
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"}\n");
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printer->Annotate("{", "}", oneof);
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printer->Print(vars,
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"\n"
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"public Builder ${$clear$oneof_capitalized_name$$}$() {\n"
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" copyOnWrite();\n"
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" instance.clear$oneof_capitalized_name$();\n"
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" return this;\n"
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"}\n"
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"\n");
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printer->Annotate("{", "}", oneof);
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}
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for (int i = 0; i < descriptor_->field_count(); i++) {
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printer->Print("\n");
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field_generators_.get(descriptor_->field(i))
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.GenerateBuilderMembers(printer);
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}
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printer->Print(
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"\n"
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"// @@protoc_insertion_point(builder_scope:$full_name$)\n",
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"full_name", descriptor_->full_name());
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printer->Outdent();
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printer->Print("}\n");
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}
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// ===================================================================
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void MessageBuilderLiteGenerator::GenerateCommonBuilderMethods(
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io::Printer* printer) {
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printer->Print(
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"// Construct using $classname$.newBuilder()\n"
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"private Builder() {\n"
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" super(DEFAULT_INSTANCE);\n"
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"}\n"
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"\n",
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"classname", name_resolver_->GetImmutableClassName(descriptor_));
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}
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// ===================================================================
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} // namespace java
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} // namespace compiler
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} // namespace protobuf
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} // namespace google
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#include "google/protobuf/port_undef.inc"
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