blob: d4d2593a66b916ab65c9db4db61ade0a200ee72a [file] [log] [blame]
// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. All rights reserved.
// https://developers.google.com/protocol-buffers/
//
// 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: dweis@google.com (Daniel Weis)
// Based on original Protocol Buffers design by
// Sanjay Ghemawat, Jeff Dean, and others.
#include <google/protobuf/compiler/java/java_message_lite.h>
#include <algorithm>
#include <google/protobuf/stubs/hash.h>
#include <map>
#include <memory>
#ifndef _SHARED_PTR_H
#include <google/protobuf/stubs/shared_ptr.h>
#endif
#include <vector>
#include <google/protobuf/compiler/java/java_context.h>
#include <google/protobuf/compiler/java/java_doc_comment.h>
#include <google/protobuf/compiler/java/java_enum_lite.h>
#include <google/protobuf/compiler/java/java_extension_lite.h>
#include <google/protobuf/compiler/java/java_generator_factory.h>
#include <google/protobuf/compiler/java/java_helpers.h>
#include <google/protobuf/compiler/java/java_message_builder.h>
#include <google/protobuf/compiler/java/java_message_builder_lite.h>
#include <google/protobuf/compiler/java/java_name_resolver.h>
#include <google/protobuf/io/coded_stream.h>
#include <google/protobuf/io/printer.h>
#include <google/protobuf/descriptor.pb.h>
#include <google/protobuf/wire_format.h>
#include <google/protobuf/stubs/strutil.h>
#include <google/protobuf/stubs/substitute.h>
namespace google {
namespace protobuf {
namespace compiler {
namespace java {
using internal::WireFormat;
using internal::WireFormatLite;
namespace {
bool GenerateHasBits(const Descriptor* descriptor) {
return SupportFieldPresence(descriptor->file()) ||
HasRepeatedFields(descriptor);
}
string MapValueImmutableClassdName(const Descriptor* descriptor,
ClassNameResolver* name_resolver) {
const FieldDescriptor* value_field = descriptor->FindFieldByName("value");
GOOGLE_CHECK_EQ(FieldDescriptor::TYPE_MESSAGE, value_field->type());
return name_resolver->GetImmutableClassName(value_field->message_type());
}
} // namespace
// ===================================================================
ImmutableMessageLiteGenerator::ImmutableMessageLiteGenerator(
const Descriptor* descriptor, Context* context)
: MessageGenerator(descriptor), context_(context),
name_resolver_(context->GetNameResolver()),
field_generators_(descriptor, context_) {
GOOGLE_CHECK(!HasDescriptorMethods(descriptor->file(), context->EnforceLite()))
<< "Generator factory error: A lite message generator is used to "
"generate non-lite messages.";
}
ImmutableMessageLiteGenerator::~ImmutableMessageLiteGenerator() {}
void ImmutableMessageLiteGenerator::GenerateStaticVariables(
io::Printer* printer, int* bytecode_estimate) {
// Generate static members for all nested types.
for (int i = 0; i < descriptor_->nested_type_count(); i++) {
// TODO(kenton): Reuse MessageGenerator objects?
ImmutableMessageLiteGenerator(descriptor_->nested_type(i), context_)
.GenerateStaticVariables(printer, bytecode_estimate);
}
}
int ImmutableMessageLiteGenerator::GenerateStaticVariableInitializers(
io::Printer* printer) {
int bytecode_estimate = 0;
// Generate static member initializers for all nested types.
for (int i = 0; i < descriptor_->nested_type_count(); i++) {
// TODO(kenton): Reuse MessageGenerator objects?
bytecode_estimate +=
ImmutableMessageLiteGenerator(descriptor_->nested_type(i), context_)
.GenerateStaticVariableInitializers(printer);
}
return bytecode_estimate;
}
// ===================================================================
void ImmutableMessageLiteGenerator::GenerateInterface(io::Printer* printer) {
if (descriptor_->extension_range_count() > 0) {
printer->Print(
"public interface $classname$OrBuilder extends \n"
" $extra_interfaces$\n"
" com.google.protobuf.GeneratedMessageLite.\n"
" ExtendableMessageOrBuilder<\n"
" $classname$, $classname$.Builder> {\n",
"extra_interfaces", ExtraMessageOrBuilderInterfaces(descriptor_),
"classname", descriptor_->name());
} else {
printer->Print(
"public interface $classname$OrBuilder extends\n"
" $extra_interfaces$\n"
" com.google.protobuf.MessageLiteOrBuilder {\n",
"extra_interfaces", ExtraMessageOrBuilderInterfaces(descriptor_),
"classname", descriptor_->name());
}
printer->Indent();
for (int i = 0; i < descriptor_->field_count(); i++) {
printer->Print("\n");
field_generators_.get(descriptor_->field(i))
.GenerateInterfaceMembers(printer);
}
for (int i = 0; i < descriptor_->oneof_decl_count(); i++) {
printer->Print(
"\n"
"public $classname$.$oneof_capitalized_name$Case "
"get$oneof_capitalized_name$Case();\n",
"oneof_capitalized_name",
context_->GetOneofGeneratorInfo(
descriptor_->oneof_decl(i))->capitalized_name,
"classname",
context_->GetNameResolver()->GetImmutableClassName(descriptor_));
}
printer->Outdent();
printer->Print("}\n");
}
// ===================================================================
void ImmutableMessageLiteGenerator::Generate(io::Printer* printer) {
bool is_own_file =
descriptor_->containing_type() == NULL &&
MultipleJavaFiles(descriptor_->file(), /* immutable = */ true);
map<string, string> variables;
variables["static"] = is_own_file ? " " : " static ";
variables["classname"] = descriptor_->name();
variables["extra_interfaces"] = ExtraMessageInterfaces(descriptor_);
WriteMessageDocComment(printer, descriptor_);
// The builder_type stores the super type name of the nested Builder class.
string builder_type;
if (descriptor_->extension_range_count() > 0) {
printer->Print(variables,
"public $static$final class $classname$ extends\n"
" com.google.protobuf.GeneratedMessageLite.ExtendableMessage<\n"
" $classname$, $classname$.Builder> implements\n"
" $extra_interfaces$\n"
" $classname$OrBuilder {\n");
builder_type = strings::Substitute(
"com.google.protobuf.GeneratedMessageLite.ExtendableBuilder<$0, ?>",
name_resolver_->GetImmutableClassName(descriptor_));
} else {
printer->Print(variables,
"public $static$final class $classname$ extends\n"
" com.google.protobuf.GeneratedMessageLite<\n"
" $classname$, $classname$.Builder> implements\n"
" $extra_interfaces$\n"
" $classname$OrBuilder {\n");
builder_type = "com.google.protobuf.GeneratedMessageLite.Builder";
}
printer->Indent();
GenerateConstructor(printer);
// Nested types
for (int i = 0; i < descriptor_->enum_type_count(); i++) {
EnumLiteGenerator(descriptor_->enum_type(i), true, context_)
.Generate(printer);
}
for (int i = 0; i < descriptor_->nested_type_count(); i++) {
// Don't generate Java classes for map entry messages.
if (IsMapEntry(descriptor_->nested_type(i))) continue;
ImmutableMessageLiteGenerator messageGenerator(
descriptor_->nested_type(i), context_);
messageGenerator.GenerateInterface(printer);
messageGenerator.Generate(printer);
}
if (GenerateHasBits(descriptor_)) {
// Integers for bit fields.
int totalBits = 0;
for (int i = 0; i < descriptor_->field_count(); i++) {
totalBits += field_generators_.get(descriptor_->field(i))
.GetNumBitsForMessage();
}
int totalInts = (totalBits + 31) / 32;
for (int i = 0; i < totalInts; i++) {
printer->Print("private int $bit_field_name$;\n",
"bit_field_name", GetBitFieldName(i));
}
}
// oneof
map<string, string> vars;
for (int i = 0; i < descriptor_->oneof_decl_count(); i++) {
vars["oneof_name"] = context_->GetOneofGeneratorInfo(
descriptor_->oneof_decl(i))->name;
vars["oneof_capitalized_name"] = context_->GetOneofGeneratorInfo(
descriptor_->oneof_decl(i))->capitalized_name;
vars["oneof_index"] = SimpleItoa(descriptor_->oneof_decl(i)->index());
// oneofCase_ and oneof_
printer->Print(vars,
"private int $oneof_name$Case_ = 0;\n"
"private java.lang.Object $oneof_name$_;\n");
// OneofCase enum
printer->Print(vars,
"public enum $oneof_capitalized_name$Case\n"
" implements com.google.protobuf.Internal.EnumLite {\n");
printer->Indent();
for (int j = 0; j < descriptor_->oneof_decl(i)->field_count(); j++) {
const FieldDescriptor* field = descriptor_->oneof_decl(i)->field(j);
printer->Print(
"$field_name$($field_number$),\n",
"field_name",
ToUpper(field->name()),
"field_number",
SimpleItoa(field->number()));
}
printer->Print(
"$cap_oneof_name$_NOT_SET(0);\n",
"cap_oneof_name",
ToUpper(vars["oneof_name"]));
printer->Print(vars,
"private final int value;\n"
"private $oneof_capitalized_name$Case(int value) {\n"
" this.value = value;\n"
"}\n");
printer->Print(vars,
"/**\n"
" * @deprecated Use {@link #forNumber(int)} instead.\n"
" */\n"
"@java.lang.Deprecated\n"
"public static $oneof_capitalized_name$Case valueOf(int value) {\n"
" return forNumber(value);\n"
"}\n"
"\n"
"public static $oneof_capitalized_name$Case forNumber(int value) {\n"
" switch (value) {\n");
for (int j = 0; j < descriptor_->oneof_decl(i)->field_count(); j++) {
const FieldDescriptor* field = descriptor_->oneof_decl(i)->field(j);
printer->Print(
" case $field_number$: return $field_name$;\n",
"field_number",
SimpleItoa(field->number()),
"field_name",
ToUpper(field->name()));
}
printer->Print(
" case 0: return $cap_oneof_name$_NOT_SET;\n"
" default: return null;\n"
" }\n"
"}\n"
"public int getNumber() {\n"
" return this.value;\n"
"}\n",
"cap_oneof_name", ToUpper(vars["oneof_name"]));
printer->Outdent();
printer->Print("};\n\n");
// oneofCase()
printer->Print(vars,
"public $oneof_capitalized_name$Case\n"
"get$oneof_capitalized_name$Case() {\n"
" return $oneof_capitalized_name$Case.forNumber(\n"
" $oneof_name$Case_);\n"
"}\n"
"\n"
"private void clear$oneof_capitalized_name$() {\n"
" $oneof_name$Case_ = 0;\n"
" $oneof_name$_ = null;\n"
"}\n"
"\n");
}
// Fields
for (int i = 0; i < descriptor_->field_count(); i++) {
printer->Print("public static final int $constant_name$ = $number$;\n",
"constant_name", FieldConstantName(descriptor_->field(i)),
"number", SimpleItoa(descriptor_->field(i)->number()));
field_generators_.get(descriptor_->field(i)).GenerateMembers(printer);
printer->Print("\n");
}
GenerateMessageSerializationMethods(printer);
GenerateParseFromMethods(printer);
GenerateBuilder(printer);
if (HasRequiredFields(descriptor_)) {
// Memoizes whether the protocol buffer is fully initialized (has all
// required fields). -1 means not yet computed. 0 means false and 1 means
// true.
printer->Print(
"private byte memoizedIsInitialized = -1;\n");
}
printer->Print(
"protected final Object dynamicMethod(\n"
" com.google.protobuf.GeneratedMessageLite.MethodToInvoke method,\n"
" Object arg0, Object arg1) {\n"
" switch (method) {\n"
" case NEW_MUTABLE_INSTANCE: {\n"
" return new $classname$();\n"
" }\n",
"classname", name_resolver_->GetImmutableClassName(descriptor_));
printer->Indent();
printer->Indent();
printer->Print(
"case IS_INITIALIZED: {\n");
printer->Indent();
GenerateDynamicMethodIsInitialized(printer);
printer->Outdent();
printer->Print(
"}\n"
"case MAKE_IMMUTABLE: {\n");
printer->Indent();
GenerateDynamicMethodMakeImmutable(printer);
printer->Outdent();
printer->Print(
"}\n"
"case NEW_BUILDER: {\n");
printer->Indent();
GenerateDynamicMethodNewBuilder(printer);
printer->Outdent();
printer->Print(
"}\n"
"case VISIT: {\n");
printer->Indent();
GenerateDynamicMethodVisit(printer);
printer->Outdent();
printer->Print(
"}\n"
"case MERGE_FROM_STREAM: {\n");
printer->Indent();
GenerateDynamicMethodMergeFromStream(printer);
printer->Outdent();
printer->Print(
"}\n"
"case GET_DEFAULT_INSTANCE: {\n"
" return DEFAULT_INSTANCE;\n"
"}\n"
"case GET_PARSER: {\n"
// Generally one would use the lazy initialization holder pattern for
// manipulating static fields but that has exceptional cost on Android as
// it will generate an extra class for every message. Instead, use the
// double-check locking pattern which works just as well.
" if (PARSER == null) {"
" synchronized ($classname$.class) {\n"
" if (PARSER == null) {\n"
" PARSER = new DefaultInstanceBasedParser(DEFAULT_INSTANCE);\n"
" }\n"
" }\n"
" }\n"
" return PARSER;\n"
"}\n",
"classname", name_resolver_->GetImmutableClassName(descriptor_));
printer->Outdent();
printer->Outdent();
printer->Print(
" }\n"
" throw new UnsupportedOperationException();\n"
"}\n"
"\n",
"classname", name_resolver_->GetImmutableClassName(descriptor_));
printer->Print(
"\n"
"// @@protoc_insertion_point(class_scope:$full_name$)\n",
"full_name", descriptor_->full_name());
// Carefully initialize the default instance in such a way that it doesn't
// conflict with other initialization.
printer->Print(
"private static final $classname$ DEFAULT_INSTANCE;\n",
"classname", name_resolver_->GetImmutableClassName(descriptor_));
printer->Print(
"static {\n"
" DEFAULT_INSTANCE = new $classname$();\n"
" DEFAULT_INSTANCE.makeImmutable();\n"
"}\n"
"\n",
"classname", descriptor_->name());
printer->Print(
"public static $classname$ getDefaultInstance() {\n"
" return DEFAULT_INSTANCE;\n"
"}\n"
"\n",
"classname", name_resolver_->GetImmutableClassName(descriptor_));
GenerateParser(printer);
// Extensions must be declared after the DEFAULT_INSTANCE is initialized
// because the DEFAULT_INSTANCE is used by the extension to lazily retrieve
// the outer class's FileDescriptor.
for (int i = 0; i < descriptor_->extension_count(); i++) {
ImmutableExtensionLiteGenerator(descriptor_->extension(i), context_)
.Generate(printer);
}
printer->Outdent();
printer->Print("}\n\n");
}
// ===================================================================
void ImmutableMessageLiteGenerator::
GenerateMessageSerializationMethods(io::Printer* printer) {
google::protobuf::scoped_array<const FieldDescriptor * > sorted_fields(
SortFieldsByNumber(descriptor_));
vector<const Descriptor::ExtensionRange*> sorted_extensions;
for (int i = 0; i < descriptor_->extension_range_count(); ++i) {
sorted_extensions.push_back(descriptor_->extension_range(i));
}
std::sort(sorted_extensions.begin(), sorted_extensions.end(),
ExtensionRangeOrdering());
printer->Print(
"public void writeTo(com.google.protobuf.CodedOutputStream output)\n"
" throws java.io.IOException {\n");
printer->Indent();
if (HasPackedFields(descriptor_)) {
// writeTo(CodedOutputStream output) might be invoked without
// getSerializedSize() ever being called, but we need the memoized
// sizes in case this message has packed fields. Rather than emit checks for
// each packed field, just call getSerializedSize() up front.
// In most cases, getSerializedSize() will have already been called anyway
// by one of the wrapper writeTo() methods, making this call cheap.
printer->Print(
"getSerializedSize();\n");
}
if (descriptor_->extension_range_count() > 0) {
if (descriptor_->options().message_set_wire_format()) {
printer->Print(
"com.google.protobuf.GeneratedMessageLite\n"
" .ExtendableMessage<$classname$, $classname$.Builder>\n"
" .ExtensionWriter extensionWriter =\n"
" newMessageSetExtensionWriter();\n",
"classname", name_resolver_->GetImmutableClassName(descriptor_));
} else {
printer->Print(
"com.google.protobuf.GeneratedMessageLite\n"
" .ExtendableMessage<$classname$, $classname$.Builder>\n"
" .ExtensionWriter extensionWriter =\n"
" newExtensionWriter();\n",
"classname", name_resolver_->GetImmutableClassName(descriptor_));
}
}
// Merge the fields and the extension ranges, both sorted by field number.
for (int i = 0, j = 0;
i < descriptor_->field_count() || j < sorted_extensions.size();
) {
if (i == descriptor_->field_count()) {
GenerateSerializeOneExtensionRange(printer, sorted_extensions[j++]);
} else if (j == sorted_extensions.size()) {
GenerateSerializeOneField(printer, sorted_fields[i++]);
} else if (sorted_fields[i]->number() < sorted_extensions[j]->start) {
GenerateSerializeOneField(printer, sorted_fields[i++]);
} else {
GenerateSerializeOneExtensionRange(printer, sorted_extensions[j++]);
}
}
if (PreserveUnknownFields(descriptor_)) {
printer->Print(
"unknownFields.writeTo(output);\n");
}
printer->Outdent();
printer->Print(
"}\n"
"\n"
"public int getSerializedSize() {\n"
" int size = memoizedSerializedSize;\n"
" if (size != -1) return size;\n"
"\n"
" size = 0;\n");
printer->Indent();
for (int i = 0; i < descriptor_->field_count(); i++) {
field_generators_.get(sorted_fields[i]).GenerateSerializedSizeCode(printer);
}
if (descriptor_->extension_range_count() > 0) {
if (descriptor_->options().message_set_wire_format()) {
printer->Print(
"size += extensionsSerializedSizeAsMessageSet();\n");
} else {
printer->Print(
"size += extensionsSerializedSize();\n");
}
}
if (PreserveUnknownFields(descriptor_)) {
printer->Print(
"size += unknownFields.getSerializedSize();\n");
}
printer->Outdent();
printer->Print(
" memoizedSerializedSize = size;\n"
" return size;\n"
"}\n"
"\n");
}
void ImmutableMessageLiteGenerator::
GenerateParseFromMethods(io::Printer* printer) {
// Note: These are separate from GenerateMessageSerializationMethods()
// because they need to be generated even for messages that are optimized
// for code size.
printer->Print(
"public static $classname$ parseFrom(\n"
" com.google.protobuf.ByteString data)\n"
" throws com.google.protobuf.InvalidProtocolBufferException {\n"
" return com.google.protobuf.GeneratedMessageLite.parseFrom(\n"
" DEFAULT_INSTANCE, data);\n"
"}\n"
"public static $classname$ parseFrom(\n"
" com.google.protobuf.ByteString data,\n"
" com.google.protobuf.ExtensionRegistryLite extensionRegistry)\n"
" throws com.google.protobuf.InvalidProtocolBufferException {\n"
" return com.google.protobuf.GeneratedMessageLite.parseFrom(\n"
" DEFAULT_INSTANCE, data, extensionRegistry);\n"
"}\n"
"public static $classname$ parseFrom(byte[] data)\n"
" throws com.google.protobuf.InvalidProtocolBufferException {\n"
" return com.google.protobuf.GeneratedMessageLite.parseFrom(\n"
" DEFAULT_INSTANCE, data);\n"
"}\n"
"public static $classname$ parseFrom(\n"
" byte[] data,\n"
" com.google.protobuf.ExtensionRegistryLite extensionRegistry)\n"
" throws com.google.protobuf.InvalidProtocolBufferException {\n"
" return com.google.protobuf.GeneratedMessageLite.parseFrom(\n"
" DEFAULT_INSTANCE, data, extensionRegistry);\n"
"}\n"
"public static $classname$ parseFrom(java.io.InputStream input)\n"
" throws java.io.IOException {\n"
" return com.google.protobuf.GeneratedMessageLite.parseFrom(\n"
" DEFAULT_INSTANCE, input);\n"
"}\n"
"public static $classname$ parseFrom(\n"
" java.io.InputStream input,\n"
" com.google.protobuf.ExtensionRegistryLite extensionRegistry)\n"
" throws java.io.IOException {\n"
" return com.google.protobuf.GeneratedMessageLite.parseFrom(\n"
" DEFAULT_INSTANCE, input, extensionRegistry);\n"
"}\n"
"public static $classname$ parseDelimitedFrom(java.io.InputStream input)\n"
" throws java.io.IOException {\n"
" return parseDelimitedFrom(DEFAULT_INSTANCE, input);\n"
"}\n"
"public static $classname$ parseDelimitedFrom(\n"
" java.io.InputStream input,\n"
" com.google.protobuf.ExtensionRegistryLite extensionRegistry)\n"
" throws java.io.IOException {\n"
" return parseDelimitedFrom(DEFAULT_INSTANCE, input, extensionRegistry);\n"
"}\n"
"public static $classname$ parseFrom(\n"
" com.google.protobuf.CodedInputStream input)\n"
" throws java.io.IOException {\n"
" return com.google.protobuf.GeneratedMessageLite.parseFrom(\n"
" DEFAULT_INSTANCE, input);\n"
"}\n"
"public static $classname$ parseFrom(\n"
" com.google.protobuf.CodedInputStream input,\n"
" com.google.protobuf.ExtensionRegistryLite extensionRegistry)\n"
" throws java.io.IOException {\n"
" return com.google.protobuf.GeneratedMessageLite.parseFrom(\n"
" DEFAULT_INSTANCE, input, extensionRegistry);\n"
"}\n"
"\n",
"classname", name_resolver_->GetImmutableClassName(descriptor_));
}
void ImmutableMessageLiteGenerator::GenerateSerializeOneField(
io::Printer* printer, const FieldDescriptor* field) {
field_generators_.get(field).GenerateSerializationCode(printer);
}
void ImmutableMessageLiteGenerator::GenerateSerializeOneExtensionRange(
io::Printer* printer, const Descriptor::ExtensionRange* range) {
printer->Print(
"extensionWriter.writeUntil($end$, output);\n",
"end", SimpleItoa(range->end));
}
// ===================================================================
void ImmutableMessageLiteGenerator::GenerateBuilder(io::Printer* printer) {
printer->Print(
"public static Builder newBuilder() {\n"
" return DEFAULT_INSTANCE.toBuilder();\n"
"}\n"
"public static Builder newBuilder($classname$ prototype) {\n"
" return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);\n"
"}\n"
"\n",
"classname", name_resolver_->GetImmutableClassName(descriptor_));
MessageBuilderLiteGenerator builderGenerator(descriptor_, context_);
builderGenerator.Generate(printer);
}
// ===================================================================
void ImmutableMessageLiteGenerator::GenerateDynamicMethodIsInitialized(
io::Printer* printer) {
// Returns null for false, DEFAULT_INSTANCE for true.
if (!HasRequiredFields(descriptor_)) {
printer->Print("return DEFAULT_INSTANCE;\n");
return;
}
// Don't directly compare to -1 to avoid an Android x86 JIT bug.
printer->Print(
"byte isInitialized = memoizedIsInitialized;\n"
"if (isInitialized == 1) return DEFAULT_INSTANCE;\n"
"if (isInitialized == 0) return null;\n"
"\n"
"boolean shouldMemoize = ((Boolean) arg0).booleanValue();\n");
// Check that all required fields in this message are set.
// TODO(kenton): We can optimize this when we switch to putting all the
// "has" fields into a single bitfield.
for (int i = 0; i < descriptor_->field_count(); i++) {
const FieldDescriptor* field = descriptor_->field(i);
const FieldGeneratorInfo* info = context_->GetFieldGeneratorInfo(field);
if (field->is_required()) {
printer->Print(
"if (!has$name$()) {\n"
" if (shouldMemoize) {\n"
" memoizedIsInitialized = 0;\n"
" }\n"
" return null;\n"
"}\n",
"name", info->capitalized_name);
}
}
// Now check that all embedded messages are initialized.
for (int i = 0; i < descriptor_->field_count(); i++) {
const FieldDescriptor* field = descriptor_->field(i);
const FieldGeneratorInfo* info = context_->GetFieldGeneratorInfo(field);
if (GetJavaType(field) == JAVATYPE_MESSAGE &&
HasRequiredFields(field->message_type())) {
switch (field->label()) {
case FieldDescriptor::LABEL_REQUIRED:
printer->Print(
"if (!get$name$().isInitialized()) {\n"
" if (shouldMemoize) {\n"
" memoizedIsInitialized = 0;\n"
" }\n"
" return null;\n"
"}\n",
"type", name_resolver_->GetImmutableClassName(
field->message_type()),
"name", info->capitalized_name);
break;
case FieldDescriptor::LABEL_OPTIONAL:
if (!SupportFieldPresence(descriptor_->file()) &&
field->containing_oneof() != NULL) {
const OneofDescriptor* oneof = field->containing_oneof();
const OneofGeneratorInfo* oneof_info =
context_->GetOneofGeneratorInfo(oneof);
printer->Print(
"if ($oneof_name$Case_ == $field_number$) {\n",
"oneof_name", oneof_info->name,
"field_number", SimpleItoa(field->number()));
} else {
printer->Print(
"if (has$name$()) {\n",
"name", info->capitalized_name);
}
printer->Print(
" if (!get$name$().isInitialized()) {\n"
" if (shouldMemoize) {\n"
" memoizedIsInitialized = 0;\n"
" }\n"
" return null;\n"
" }\n"
"}\n",
"name", info->capitalized_name);
break;
case FieldDescriptor::LABEL_REPEATED:
if (IsMapEntry(field->message_type())) {
printer->Print(
"for ($type$ item : get$name$().values()) {\n"
" if (!item.isInitialized()) {\n"
" if (shouldMemoize) {\n"
" memoizedIsInitialized = 0;\n"
" }\n"
" return null;\n"
" }\n"
"}\n",
"type", MapValueImmutableClassdName(field->message_type(),
name_resolver_),
"name", info->capitalized_name);
} else {
printer->Print(
"for (int i = 0; i < get$name$Count(); i++) {\n"
" if (!get$name$(i).isInitialized()) {\n"
" if (shouldMemoize) {\n"
" memoizedIsInitialized = 0;\n"
" }\n"
" return null;\n"
" }\n"
"}\n",
"type", name_resolver_->GetImmutableClassName(
field->message_type()),
"name", info->capitalized_name);
}
break;
}
}
}
if (descriptor_->extension_range_count() > 0) {
printer->Print(
"if (!extensionsAreInitialized()) {\n"
" if (shouldMemoize) {\n"
" memoizedIsInitialized = 0;\n"
" }\n"
" return null;\n"
"}\n");
}
printer->Print(
"if (shouldMemoize) memoizedIsInitialized = 1;\n");
printer->Print(
"return DEFAULT_INSTANCE;\n"
"\n");
}
// ===================================================================
void ImmutableMessageLiteGenerator::GenerateDynamicMethodMakeImmutable(
io::Printer* printer) {
// Output generation code for each field.
for (int i = 0; i < descriptor_->field_count(); i++) {
field_generators_.get(descriptor_->field(i))
.GenerateDynamicMethodMakeImmutableCode(printer);
}
printer->Print(
"return null;\n");
}
// ===================================================================
void ImmutableMessageLiteGenerator::GenerateDynamicMethodNewBuilder(
io::Printer* printer) {
printer->Print(
"return new Builder();\n");
}
// ===================================================================
void ImmutableMessageLiteGenerator::GenerateDynamicMethodVisit(
io::Printer* printer) {
printer->Print(
"Visitor visitor = (Visitor) arg0;\n"
"$classname$ other = ($classname$) arg1;\n",
"classname", name_resolver_->GetImmutableClassName(descriptor_));
for (int i = 0; i < descriptor_->field_count(); i++) {
if (!descriptor_->field(i)->containing_oneof()) {
field_generators_.get(
descriptor_->field(i)).GenerateVisitCode(printer);
}
}
// Merge oneof fields.
for (int i = 0; i < descriptor_->oneof_decl_count(); ++i) {
printer->Print(
"switch (other.get$oneof_capitalized_name$Case()) {\n",
"oneof_capitalized_name",
context_->GetOneofGeneratorInfo(
descriptor_->oneof_decl(i))->capitalized_name);
printer->Indent();
for (int j = 0; j < descriptor_->oneof_decl(i)->field_count(); j++) {
const FieldDescriptor* field = descriptor_->oneof_decl(i)->field(j);
printer->Print(
"case $field_name$: {\n",
"field_name",
ToUpper(field->name()));
printer->Indent();
field_generators_.get(field).GenerateVisitCode(printer);
printer->Print(
"break;\n");
printer->Outdent();
printer->Print(
"}\n");
}
printer->Print(
"case $cap_oneof_name$_NOT_SET: {\n"
" visitor.visitOneofNotSet($oneof_name$Case_ != 0);\n"
" break;\n"
"}\n",
"cap_oneof_name",
ToUpper(context_->GetOneofGeneratorInfo(
descriptor_->oneof_decl(i))->name),
"oneof_name",
context_->GetOneofGeneratorInfo(
descriptor_->oneof_decl(i))->name);
printer->Outdent();
printer->Print(
"}\n");
}
printer->Print(
"if (visitor == com.google.protobuf.GeneratedMessageLite.MergeFromVisitor\n"
" .INSTANCE) {\n");
printer->Indent();
for (int i = 0; i < descriptor_->oneof_decl_count(); ++i) {
const OneofDescriptor* field = descriptor_->oneof_decl(i);
printer->Print(
"if (other.$oneof_name$Case_ != 0) {\n"
" $oneof_name$Case_ = other.$oneof_name$Case_;\n"
"}\n",
"oneof_name", context_->GetOneofGeneratorInfo(field)->name);
}
if (GenerateHasBits(descriptor_)) {
// Integers for bit fields.
int totalBits = 0;
for (int i = 0; i < descriptor_->field_count(); i++) {
totalBits += field_generators_.get(descriptor_->field(i))
.GetNumBitsForMessage();
}
int totalInts = (totalBits + 31) / 32;
for (int i = 0; i < totalInts; i++) {
printer->Print(
"$bit_field_name$ |= other.$bit_field_name$;\n",
"bit_field_name", GetBitFieldName(i));
}
}
printer->Outdent();
printer->Print(
"}\n");
printer->Print(
"return this;\n");
}
// ===================================================================
void ImmutableMessageLiteGenerator::GenerateDynamicMethodMergeFromStream(
io::Printer* printer) {
printer->Print(
"com.google.protobuf.CodedInputStream input =\n"
" (com.google.protobuf.CodedInputStream) arg0;\n"
"com.google.protobuf.ExtensionRegistryLite extensionRegistry =\n"
" (com.google.protobuf.ExtensionRegistryLite) arg1;\n"
"try {\n");
printer->Indent();
printer->Print(
"boolean done = false;\n"
"while (!done) {\n");
printer->Indent();
printer->Print(
"int tag = input.readTag();\n"
"switch (tag) {\n");
printer->Indent();
printer->Print(
"case 0:\n" // zero signals EOF / limit reached
" done = true;\n"
" break;\n");
if (PreserveUnknownFields(descriptor_)) {
if (descriptor_->extension_range_count() > 0) {
printer->Print(
"default: {\n"
" if (!parseUnknownField(getDefaultInstanceForType(),\n"
" input, extensionRegistry, tag)) {\n"
" done = true;\n" // it's an endgroup tag
" }\n"
" break;\n"
"}\n");
} else {
printer->Print(
"default: {\n"
" if (!parseUnknownField(tag, input)) {\n"
" done = true;\n" // it's an endgroup tag
" }\n"
" break;\n"
"}\n");
}
} else {
printer->Print(
"default: {\n"
" if (!input.skipField(tag)) {\n"
" done = true;\n" // it's an endgroup tag
" }\n"
" break;\n"
"}\n");
}
google::protobuf::scoped_array<const FieldDescriptor * > sorted_fields(
SortFieldsByNumber(descriptor_));
for (int i = 0; i < descriptor_->field_count(); i++) {
const FieldDescriptor* field = sorted_fields[i];
uint32 tag = WireFormatLite::MakeTag(field->number(),
WireFormat::WireTypeForFieldType(field->type()));
printer->Print(
"case $tag$: {\n",
"tag", SimpleItoa(tag));
printer->Indent();
field_generators_.get(field).GenerateParsingCode(printer);
printer->Outdent();
printer->Print(
" break;\n"
"}\n");
if (field->is_packable()) {
// To make packed = true wire compatible, we generate parsing code from a
// packed version of this field regardless of field->options().packed().
uint32 packed_tag = WireFormatLite::MakeTag(field->number(),
WireFormatLite::WIRETYPE_LENGTH_DELIMITED);
printer->Print(
"case $tag$: {\n",
"tag", SimpleItoa(packed_tag));
printer->Indent();
field_generators_.get(field).GenerateParsingCodeFromPacked(printer);
printer->Outdent();
printer->Print(
" break;\n"
"}\n");
}
}
printer->Outdent();
printer->Outdent();
printer->Print(
" }\n" // switch (tag)
"}\n"); // while (!done)
printer->Outdent();
printer->Print(
"} catch (com.google.protobuf.InvalidProtocolBufferException e) {\n"
" throw new RuntimeException(e.setUnfinishedMessage(this));\n"
"} catch (java.io.IOException e) {\n"
" throw new RuntimeException(\n"
" new com.google.protobuf.InvalidProtocolBufferException(\n"
" e.getMessage()).setUnfinishedMessage(this));\n"
"} finally {\n");
printer->Indent();
printer->Outdent();
printer->Print(
"}\n"); // finally
}
// ===================================================================
namespace {
bool CheckHasBitsForEqualsAndHashCode(const FieldDescriptor* field) {
if (field->is_repeated()) {
return false;
}
if (SupportFieldPresence(field->file())) {
return true;
}
return GetJavaType(field) == JAVATYPE_MESSAGE &&
field->containing_oneof() == NULL;
}
} // namespace
// ===================================================================
void ImmutableMessageLiteGenerator::
GenerateExtensionRegistrationCode(io::Printer* printer) {
for (int i = 0; i < descriptor_->extension_count(); i++) {
ImmutableExtensionLiteGenerator(descriptor_->extension(i), context_)
.GenerateRegistrationCode(printer);
}
for (int i = 0; i < descriptor_->nested_type_count(); i++) {
ImmutableMessageLiteGenerator(descriptor_->nested_type(i), context_)
.GenerateExtensionRegistrationCode(printer);
}
}
// ===================================================================
void ImmutableMessageLiteGenerator::
GenerateConstructor(io::Printer* printer) {
printer->Print(
"private $classname$() {\n",
"classname", descriptor_->name());
printer->Indent();
// Initialize all fields to default.
GenerateInitializers(printer);
printer->Outdent();
printer->Print(
"}\n");
}
// ===================================================================
void ImmutableMessageLiteGenerator::GenerateParser(io::Printer* printer) {
printer->Print(
"private static volatile com.google.protobuf.Parser<$classname$> PARSER;\n"
"\n"
"public static com.google.protobuf.Parser<$classname$> parser() {\n"
" return DEFAULT_INSTANCE.getParserForType();\n"
"}\n",
"classname", descriptor_->name());
}
// ===================================================================
void ImmutableMessageLiteGenerator::GenerateInitializers(io::Printer* printer) {
for (int i = 0; i < descriptor_->field_count(); i++) {
if (!descriptor_->field(i)->containing_oneof()) {
field_generators_.get(descriptor_->field(i))
.GenerateInitializationCode(printer);
}
}
}
} // namespace java
} // namespace compiler
} // namespace protobuf
} // namespace google