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 | 346 |
1 files changed, 131 insertions, 215 deletions
diff --git a/src/google/protobuf/compiler/java/java_message_lite.cc b/src/google/protobuf/compiler/java/java_message_lite.cc index b6f42d16..d4d2593a 100644 --- a/src/google/protobuf/compiler/java/java_message_lite.cc +++ b/src/google/protobuf/compiler/java/java_message_lite.cc @@ -46,7 +46,7 @@ #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.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> @@ -87,19 +87,20 @@ ImmutableMessageLiteGenerator::ImmutableMessageLiteGenerator( : MessageGenerator(descriptor), context_(context), name_resolver_(context->GetNameResolver()), field_generators_(descriptor, context_) { - GOOGLE_CHECK_EQ( - FileOptions::LITE_RUNTIME, descriptor->file()->options().optimize_for()); + 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) { + 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); + .GenerateStaticVariables(printer, bytecode_estimate); } } @@ -197,7 +198,8 @@ void ImmutableMessageLiteGenerator::Generate(io::Printer* printer) { } printer->Indent(); - GenerateParsingConstructor(printer); + + GenerateConstructor(printer); // Nested types for (int i = 0; i < descriptor_->enum_type_count(); i++) { @@ -259,11 +261,15 @@ void ImmutableMessageLiteGenerator::Generate(io::Printer* printer) { "cap_oneof_name", ToUpper(vars["oneof_name"])); printer->Print(vars, - "private int value = 0;\n" + "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" @@ -281,8 +287,7 @@ void ImmutableMessageLiteGenerator::Generate(io::Printer* printer) { } printer->Print( " case 0: return $cap_oneof_name$_NOT_SET;\n" - " default: throw new java.lang.IllegalArgumentException(\n" - " \"Value is undefined for this oneof enum.\");\n" + " default: return null;\n" " }\n" "}\n" "public int getNumber() {\n" @@ -317,11 +322,6 @@ void ImmutableMessageLiteGenerator::Generate(io::Printer* printer) { GenerateMessageSerializationMethods(printer); - if (HasEqualsAndHashCode(descriptor_)) { - GenerateEqualsAndHashCode(printer); - } - - GenerateParseFromMethods(printer); GenerateBuilder(printer); @@ -338,16 +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_)); @@ -378,10 +370,18 @@ void ImmutableMessageLiteGenerator::Generate(io::Printer* printer) { printer->Print( "}\n" - "case MERGE_FROM: {\n"); + "case VISIT: {\n"); + + printer->Indent(); + GenerateDynamicMethodVisit(printer); + printer->Outdent(); + + printer->Print( + "}\n" + "case MERGE_FROM_STREAM: {\n"); printer->Indent(); - GenerateDynamicMethodMergeFrom(printer); + GenerateDynamicMethodMergeFromStream(printer); printer->Outdent(); printer->Print( @@ -429,11 +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()); @@ -450,7 +447,7 @@ void ImmutableMessageLiteGenerator::Generate(io::Printer* printer) { // 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++) { - ImmutableExtensionGenerator(descriptor_->extension(i), context_) + ImmutableExtensionLiteGenerator(descriptor_->extension(i), context_) .Generate(printer); } @@ -561,9 +558,6 @@ GenerateMessageSerializationMethods(io::Printer* printer) { " return size;\n" "}\n" "\n"); - - printer->Print( - "private static final long serialVersionUID = 0L;\n"); } void ImmutableMessageLiteGenerator:: @@ -575,54 +569,62 @@ GenerateParseFromMethods(io::Printer* printer) { "public static $classname$ parseFrom(\n" " com.google.protobuf.ByteString data)\n" " throws com.google.protobuf.InvalidProtocolBufferException {\n" - " return parser().parseFrom(data);\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 parser().parseFrom(data, extensionRegistry);\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 parser().parseFrom(data);\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 parser().parseFrom(data, extensionRegistry);\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 parser().parseFrom(input);\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 parser().parseFrom(input, extensionRegistry);\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 parser().parseDelimitedFrom(input);\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 parser().parseDelimitedFrom(input, extensionRegistry);\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 parser().parseFrom(input);\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 parser().parseFrom(input, extensionRegistry);\n" + " return com.google.protobuf.GeneratedMessageLite.parseFrom(\n" + " DEFAULT_INSTANCE, input, extensionRegistry);\n" "}\n" "\n", "classname", name_resolver_->GetImmutableClassName(descriptor_)); @@ -793,11 +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"); } @@ -812,19 +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); } } @@ -843,7 +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(); @@ -852,188 +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)); + descriptor_->oneof_decl(i))->name), + "oneof_name", + 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"); + "if (visitor == com.google.protobuf.GeneratedMessageLite.MergeFromVisitor\n" + " .INSTANCE) {\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"); - for (int i = 0; i < descriptor_->field_count(); i++) { - const FieldDescriptor* field = descriptor_->field(i); - 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"); - } - } - 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. + for (int i = 0; i < descriptor_->oneof_decl_count(); ++i) { + const OneofDescriptor* field = descriptor_->oneof_decl(i); printer->Print( - "result = result && unknownFields.equals(other.unknownFields);\n"); + "if (other.$oneof_name$Case_ != 0) {\n" + " $oneof_name$Case_ = other.$oneof_name$Case_;\n" + "}\n", + "oneof_name", context_->GetOneofGeneratorInfo(field)->name); } - 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"); - 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_)); + 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 < descriptor_->field_count(); i++) { - const FieldDescriptor* field = descriptor_->field(i); - const FieldGeneratorInfo* info = context_->GetFieldGeneratorInfo(field); - bool check_has_bits = CheckHasBitsForEqualsAndHashCode(field); - if (check_has_bits) { + for (int i = 0; i < totalInts; i++) { 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"); + "$bit_field_name$ |= other.$bit_field_name$;\n", + "bit_field_name", GetBitFieldName(i)); } } - - 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++) { - ImmutableExtensionGenerator(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(); @@ -1081,6 +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(), @@ -1134,19 +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"); } @@ -1171,7 +1088,6 @@ void ImmutableMessageLiteGenerator::GenerateInitializers(io::Printer* printer) { } } - } // namespace java } // namespace compiler } // namespace protobuf |