diff options
Diffstat (limited to 'src/google/protobuf/compiler/java/java_message_lite.cc')
-rw-r--r-- | src/google/protobuf/compiler/java/java_message_lite.cc | 354 |
1 files changed, 98 insertions, 256 deletions
diff --git a/src/google/protobuf/compiler/java/java_message_lite.cc b/src/google/protobuf/compiler/java/java_message_lite.cc index 14cc908b..d4d2593a 100644 --- a/src/google/protobuf/compiler/java/java_message_lite.cc +++ b/src/google/protobuf/compiler/java/java_message_lite.cc @@ -199,7 +199,7 @@ void ImmutableMessageLiteGenerator::Generate(io::Printer* printer) { printer->Indent(); - GenerateParsingConstructor(printer); + GenerateConstructor(printer); // Nested types for (int i = 0; i < descriptor_->enum_type_count(); i++) { @@ -322,10 +322,6 @@ void ImmutableMessageLiteGenerator::Generate(io::Printer* printer) { GenerateMessageSerializationMethods(printer); - if (HasEqualsAndHashCode(descriptor_)) { - GenerateEqualsAndHashCode(printer); - } - GenerateParseFromMethods(printer); GenerateBuilder(printer); @@ -342,16 +338,8 @@ void ImmutableMessageLiteGenerator::Generate(io::Printer* printer) { " com.google.protobuf.GeneratedMessageLite.MethodToInvoke method,\n" " Object arg0, Object arg1) {\n" " switch (method) {\n" - " case PARSE_PARTIAL_FROM: {\n" - " return new $classname$(" - " (com.google.protobuf.CodedInputStream) arg0,\n" - " (com.google.protobuf.ExtensionRegistryLite) arg1);\n" - " }\n" - " case NEW_INSTANCE: {\n" - " return new $classname$(\n" - " com.google.protobuf.Internal.EMPTY_CODED_INPUT_STREAM,\n" - " com.google.protobuf.ExtensionRegistryLite\n" - " .getEmptyRegistry());\n" + " case NEW_MUTABLE_INSTANCE: {\n" + " return new $classname$();\n" " }\n", "classname", name_resolver_->GetImmutableClassName(descriptor_)); @@ -382,10 +370,18 @@ void ImmutableMessageLiteGenerator::Generate(io::Printer* printer) { printer->Print( "}\n" - "case MERGE_FROM: {\n"); + "case VISIT: {\n"); printer->Indent(); - GenerateDynamicMethodMergeFrom(printer); + GenerateDynamicMethodVisit(printer); + printer->Outdent(); + + printer->Print( + "}\n" + "case MERGE_FROM_STREAM: {\n"); + + printer->Indent(); + GenerateDynamicMethodMergeFromStream(printer); printer->Outdent(); printer->Print( @@ -433,11 +429,8 @@ void ImmutableMessageLiteGenerator::Generate(io::Printer* printer) { printer->Print( "static {\n" - " DEFAULT_INSTANCE = new $classname$(\n" - " com.google.protobuf.Internal\n" - " .EMPTY_CODED_INPUT_STREAM,\n" - " com.google.protobuf.ExtensionRegistryLite\n" - " .getEmptyRegistry());\n" + " DEFAULT_INSTANCE = new $classname$();\n" + " DEFAULT_INSTANCE.makeImmutable();\n" "}\n" "\n", "classname", descriptor_->name()); @@ -802,11 +795,13 @@ void ImmutableMessageLiteGenerator::GenerateDynamicMethodIsInitialized( 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"); } @@ -821,19 +816,17 @@ void ImmutableMessageLiteGenerator::GenerateDynamicMethodNewBuilder( // =================================================================== -void ImmutableMessageLiteGenerator::GenerateDynamicMethodMergeFrom( +void ImmutableMessageLiteGenerator::GenerateDynamicMethodVisit( io::Printer* printer) { printer->Print( - // Optimization: If other is the default instance, we know none of its - // fields are set so we can skip the merge. - "if (arg0 == $classname$.getDefaultInstance()) return this;\n" - "$classname$ other = ($classname$) arg0;\n", + "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)).GenerateMergingCode(printer); + descriptor_->field(i)).GenerateVisitCode(printer); } } @@ -852,7 +845,7 @@ void ImmutableMessageLiteGenerator::GenerateDynamicMethodMergeFrom( "field_name", ToUpper(field->name())); printer->Indent(); - field_generators_.get(field).GenerateMergingCode(printer); + field_generators_.get(field).GenerateVisitCode(printer); printer->Print( "break;\n"); printer->Outdent(); @@ -861,254 +854,66 @@ void ImmutableMessageLiteGenerator::GenerateDynamicMethodMergeFrom( } 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)); - printer->Outdent(); - printer->Print( - "}\n"); - } - - // if message type has extensions - if (descriptor_->extension_range_count() > 0) { - printer->Print( - "this.mergeExtensionFields(other);\n"); - } - - if (PreserveUnknownFields(descriptor_)) { - printer->Print( - "this.mergeUnknownFields(other.unknownFields);\n"); - } - - printer->Print( - "return this;\n"); -} - -// =================================================================== - -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:: -GenerateEqualsAndHashCode(io::Printer* printer) { - printer->Print( - "@java.lang.Override\n" - "public boolean equals(final java.lang.Object obj) {\n"); - printer->Indent(); - printer->Print( - "if (obj == this) {\n" - " return true;\n" - "}\n" - "if (!(obj instanceof $classname$)) {\n" - " return super.equals(obj);\n" - "}\n" - "$classname$ other = ($classname$) obj;\n" - "\n", - "classname", name_resolver_->GetImmutableClassName(descriptor_)); - - printer->Print("boolean result = true;\n"); - // Compare non-oneofs. - for (int i = 0; i < descriptor_->field_count(); i++) { - const FieldDescriptor* field = descriptor_->field(i); - if (field->containing_oneof() == NULL) { - const FieldGeneratorInfo* info = context_->GetFieldGeneratorInfo(field); - bool check_has_bits = CheckHasBitsForEqualsAndHashCode(field); - if (check_has_bits) { - printer->Print( - "result = result && (has$name$() == other.has$name$());\n" - "if (has$name$()) {\n", - "name", info->capitalized_name); - printer->Indent(); - } - field_generators_.get(field).GenerateEqualsCode(printer); - if (check_has_bits) { - printer->Outdent(); - printer->Print( - "}\n"); - } - } - } - - // Compare oneofs. - for (int i = 0; i < descriptor_->oneof_decl_count(); i++) { - printer->Print( - "result = result && get$oneof_capitalized_name$Case().equals(\n" - " other.get$oneof_capitalized_name$Case());\n", - "oneof_capitalized_name", - context_->GetOneofGeneratorInfo( - descriptor_->oneof_decl(i))->capitalized_name); - printer->Print( - "if (!result) return false;\n" - "switch ($oneof_name$Case_) {\n", + descriptor_->oneof_decl(i))->name), "oneof_name", context_->GetOneofGeneratorInfo( descriptor_->oneof_decl(i))->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 $field_number$:\n", - "field_number", - SimpleItoa(field->number())); - printer->Indent(); - field_generators_.get(field).GenerateEqualsCode(printer); - printer->Print("break;\n"); - printer->Outdent(); - } - printer->Print( - "case 0:\n" - "default:\n"); printer->Outdent(); - printer->Print("}\n"); - } - - if (PreserveUnknownFields(descriptor_)) { - // Always consider unknown fields for equality. This will sometimes return - // false for non-canonical ordering when running in LITE_RUNTIME but it's - // the best we can do. printer->Print( - "result = result && unknownFields.equals(other.unknownFields);\n"); + "}\n"); } - printer->Print( - "return result;\n"); - printer->Outdent(); - printer->Print( - "}\n" - "\n"); printer->Print( - "@java.lang.Override\n" - "public int hashCode() {\n"); - printer->Indent(); - printer->Print( - "if (memoizedHashCode != 0) {\n"); + "if (visitor == com.google.protobuf.GeneratedMessageLite.MergeFromVisitor\n" + " .INSTANCE) {\n"); printer->Indent(); - printer->Print( - "return memoizedHashCode;\n"); - printer->Outdent(); - printer->Print( - "}\n" - "int hash = 41;\n"); - - // Include the hash of the class so that two objects with different types - // but the same field values will probably have different hashes. - printer->Print("hash = (19 * hash) + $classname$.class.hashCode();\n", - "classname", name_resolver_->GetImmutableClassName(descriptor_)); + 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); + } - // hashCode non-oneofs. - for (int i = 0; i < descriptor_->field_count(); i++) { - const FieldDescriptor* field = descriptor_->field(i); - if (field->containing_oneof() == NULL) { - const FieldGeneratorInfo* info = context_->GetFieldGeneratorInfo(field); - bool check_has_bits = CheckHasBitsForEqualsAndHashCode(field); - if (check_has_bits) { - printer->Print( - "if (has$name$()) {\n", - "name", info->capitalized_name); - printer->Indent(); - } - field_generators_.get(field).GenerateHashCode(printer); - if (check_has_bits) { - printer->Outdent(); - printer->Print("}\n"); - } + 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; - // hashCode oneofs. - for (int i = 0; i < descriptor_->oneof_decl_count(); i++) { - printer->Print( - "switch ($oneof_name$Case_) {\n", - "oneof_name", - context_->GetOneofGeneratorInfo( - descriptor_->oneof_decl(i))->name); - printer->Indent(); - for (int j = 0; j < descriptor_->oneof_decl(i)->field_count(); j++) { - const FieldDescriptor* field = descriptor_->oneof_decl(i)->field(j); + for (int i = 0; i < totalInts; i++) { printer->Print( - "case $field_number$:\n", - "field_number", - SimpleItoa(field->number())); - printer->Indent(); - field_generators_.get(field).GenerateHashCode(printer); - printer->Print("break;\n"); - printer->Outdent(); + "$bit_field_name$ |= other.$bit_field_name$;\n", + "bit_field_name", GetBitFieldName(i)); } - printer->Print( - "case 0:\n" - "default:\n"); - printer->Outdent(); - printer->Print("}\n"); } - - printer->Print( - "hash = (29 * hash) + unknownFields.hashCode();\n"); - printer->Print( - "memoizedHashCode = hash;\n" - "return hash;\n"); printer->Outdent(); printer->Print( - "}\n" - "\n"); -} + "}\n"); -// =================================================================== -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); - } + printer->Print( + "return this;\n"); } // =================================================================== -void ImmutableMessageLiteGenerator:: -GenerateParsingConstructor(io::Printer* printer) { - google::protobuf::scoped_array<const FieldDescriptor * > sorted_fields( - SortFieldsByNumber(descriptor_)); - - printer->Print( - "private $classname$(\n" - " com.google.protobuf.CodedInputStream input,\n" - " com.google.protobuf.ExtensionRegistryLite extensionRegistry) {\n", - "classname", descriptor_->name()); - printer->Indent(); - - // Initialize all fields to default. - GenerateInitializers(printer); - - // Use builder bits to track mutable repeated fields. - int totalBuilderBits = 0; - for (int i = 0; i < descriptor_->field_count(); i++) { - const ImmutableFieldLiteGenerator& field = - field_generators_.get(descriptor_->field(i)); - totalBuilderBits += field.GetNumBitsForBuilder(); - } - int totalBuilderInts = (totalBuilderBits + 31) / 32; - for (int i = 0; i < totalBuilderInts; i++) { - printer->Print("int mutable_$bit_field_name$ = 0;\n", - "bit_field_name", GetBitFieldName(i)); - } +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(); @@ -1156,6 +961,8 @@ GenerateParsingConstructor(io::Printer* printer) { "}\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(), @@ -1209,19 +1016,54 @@ GenerateParsingConstructor(io::Printer* printer) { "} finally {\n"); printer->Indent(); - // Make repeated field list immutable. - for (int i = 0; i < descriptor_->field_count(); i++) { - const FieldDescriptor* field = sorted_fields[i]; - field_generators_.get(field).GenerateParsingDoneCode(printer); + 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( - "doneParsing();\n"); + "private $classname$() {\n", + "classname", descriptor_->name()); + printer->Indent(); + + // Initialize all fields to default. + GenerateInitializers(printer); - printer->Outdent(); printer->Outdent(); printer->Print( - " }\n" // finally "}\n"); } |