diff options
Diffstat (limited to 'src/google/protobuf/compiler/java/java_primitive_field.cc')
| -rw-r--r-- | src/google/protobuf/compiler/java/java_primitive_field.cc | 804 |
1 files changed, 608 insertions, 196 deletions
diff --git a/src/google/protobuf/compiler/java/java_primitive_field.cc b/src/google/protobuf/compiler/java/java_primitive_field.cc index f6179bf..6713d29 100644 --- a/src/google/protobuf/compiler/java/java_primitive_field.cc +++ b/src/google/protobuf/compiler/java/java_primitive_field.cc @@ -1,6 +1,6 @@ // Protocol Buffers - Google's data interchange format // Copyright 2008 Google Inc. All rights reserved. -// http://code.google.com/p/protobuf/ +// 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 @@ -35,9 +35,12 @@ #include <map> #include <string> -#include <google/protobuf/compiler/java/java_primitive_field.h> #include <google/protobuf/stubs/common.h> +#include <google/protobuf/compiler/java/java_context.h> +#include <google/protobuf/compiler/java/java_doc_comment.h> #include <google/protobuf/compiler/java/java_helpers.h> +#include <google/protobuf/compiler/java/java_name_resolver.h> +#include <google/protobuf/compiler/java/java_primitive_field.h> #include <google/protobuf/io/printer.h> #include <google/protobuf/wire_format.h> #include <google/protobuf/stubs/strutil.h> @@ -72,98 +75,25 @@ const char* PrimitiveTypeName(JavaType type) { return NULL; } -bool IsReferenceType(JavaType type) { - switch (type) { - case JAVATYPE_INT : return false; - case JAVATYPE_LONG : return false; - case JAVATYPE_FLOAT : return false; - case JAVATYPE_DOUBLE : return false; - case JAVATYPE_BOOLEAN: return false; - case JAVATYPE_STRING : return true; - case JAVATYPE_BYTES : return true; - case JAVATYPE_ENUM : return true; - case JAVATYPE_MESSAGE: return true; - - // No default because we want the compiler to complain if any new - // JavaTypes are added. - } - - GOOGLE_LOG(FATAL) << "Can't get here."; - return false; -} - -const char* GetCapitalizedType(const FieldDescriptor* field) { - switch (GetType(field)) { - case FieldDescriptor::TYPE_INT32 : return "Int32" ; - case FieldDescriptor::TYPE_UINT32 : return "UInt32" ; - case FieldDescriptor::TYPE_SINT32 : return "SInt32" ; - case FieldDescriptor::TYPE_FIXED32 : return "Fixed32" ; - case FieldDescriptor::TYPE_SFIXED32: return "SFixed32"; - case FieldDescriptor::TYPE_INT64 : return "Int64" ; - case FieldDescriptor::TYPE_UINT64 : return "UInt64" ; - case FieldDescriptor::TYPE_SINT64 : return "SInt64" ; - case FieldDescriptor::TYPE_FIXED64 : return "Fixed64" ; - case FieldDescriptor::TYPE_SFIXED64: return "SFixed64"; - case FieldDescriptor::TYPE_FLOAT : return "Float" ; - case FieldDescriptor::TYPE_DOUBLE : return "Double" ; - case FieldDescriptor::TYPE_BOOL : return "Bool" ; - case FieldDescriptor::TYPE_STRING : return "String" ; - case FieldDescriptor::TYPE_BYTES : return "Bytes" ; - case FieldDescriptor::TYPE_ENUM : return "Enum" ; - case FieldDescriptor::TYPE_GROUP : return "Group" ; - case FieldDescriptor::TYPE_MESSAGE : return "Message" ; - - // No default because we want the compiler to complain if any new - // types are added. - } - - GOOGLE_LOG(FATAL) << "Can't get here."; - return NULL; -} - -// For encodings with fixed sizes, returns that size in bytes. Otherwise -// returns -1. -int FixedSize(FieldDescriptor::Type type) { - switch (type) { - case FieldDescriptor::TYPE_INT32 : return -1; - case FieldDescriptor::TYPE_INT64 : return -1; - case FieldDescriptor::TYPE_UINT32 : return -1; - case FieldDescriptor::TYPE_UINT64 : return -1; - case FieldDescriptor::TYPE_SINT32 : return -1; - case FieldDescriptor::TYPE_SINT64 : return -1; - case FieldDescriptor::TYPE_FIXED32 : return WireFormatLite::kFixed32Size; - case FieldDescriptor::TYPE_FIXED64 : return WireFormatLite::kFixed64Size; - case FieldDescriptor::TYPE_SFIXED32: return WireFormatLite::kSFixed32Size; - case FieldDescriptor::TYPE_SFIXED64: return WireFormatLite::kSFixed64Size; - case FieldDescriptor::TYPE_FLOAT : return WireFormatLite::kFloatSize; - case FieldDescriptor::TYPE_DOUBLE : return WireFormatLite::kDoubleSize; - - case FieldDescriptor::TYPE_BOOL : return WireFormatLite::kBoolSize; - case FieldDescriptor::TYPE_ENUM : return -1; - - case FieldDescriptor::TYPE_STRING : return -1; - case FieldDescriptor::TYPE_BYTES : return -1; - case FieldDescriptor::TYPE_GROUP : return -1; - case FieldDescriptor::TYPE_MESSAGE : return -1; - - // No default because we want the compiler to complain if any new - // types are added. - } - GOOGLE_LOG(FATAL) << "Can't get here."; - return -1; -} - void SetPrimitiveVariables(const FieldDescriptor* descriptor, + int messageBitIndex, + int builderBitIndex, + const FieldGeneratorInfo* info, + ClassNameResolver* name_resolver, map<string, string>* variables) { - (*variables)["name"] = - UnderscoresToCamelCase(descriptor); - (*variables)["capitalized_name"] = - UnderscoresToCapitalizedCamelCase(descriptor); - (*variables)["number"] = SimpleItoa(descriptor->number()); + SetCommonFieldVariables(descriptor, info, variables); + (*variables)["type"] = PrimitiveTypeName(GetJavaType(descriptor)); (*variables)["boxed_type"] = BoxedPrimitiveTypeName(GetJavaType(descriptor)); - (*variables)["default"] = DefaultValue(descriptor); - (*variables)["capitalized_type"] = GetCapitalizedType(descriptor); + (*variables)["field_type"] = (*variables)["type"]; + (*variables)["field_list_type"] = "java.util.List<" + + (*variables)["boxed_type"] + ">"; + (*variables)["empty_list"] = "java.util.Collections.emptyList()"; + (*variables)["default"] = ImmutableDefaultValue(descriptor, name_resolver); + (*variables)["default_init"] = IsDefaultValueJavaDefault(descriptor) ? + "" : ("= " + ImmutableDefaultValue(descriptor, name_resolver)); + (*variables)["capitalized_type"] = + GetCapitalizedType(descriptor, /* immutable = */ true); (*variables)["tag"] = SimpleItoa(WireFormat::MakeTag(descriptor)); (*variables)["tag_size"] = SimpleItoa( WireFormat::TagSize(descriptor->number(), GetType(descriptor))); @@ -175,129 +105,517 @@ void SetPrimitiveVariables(const FieldDescriptor* descriptor, } else { (*variables)["null_check"] = ""; } + // TODO(birdo): Add @deprecated javadoc when generating javadoc is supported + // by the proto compiler + (*variables)["deprecation"] = descriptor->options().deprecated() + ? "@java.lang.Deprecated " : ""; int fixed_size = FixedSize(GetType(descriptor)); if (fixed_size != -1) { (*variables)["fixed_size"] = SimpleItoa(fixed_size); } + (*variables)["on_changed"] = + HasDescriptorMethods(descriptor->containing_type()) ? "onChanged();" : ""; + + if (SupportFieldPresence(descriptor->file())) { + // For singular messages and builders, one bit is used for the hasField bit. + (*variables)["get_has_field_bit_message"] = GenerateGetBit(messageBitIndex); + (*variables)["get_has_field_bit_builder"] = GenerateGetBit(builderBitIndex); + + // Note that these have a trailing ";". + (*variables)["set_has_field_bit_message"] = + GenerateSetBit(messageBitIndex) + ";"; + (*variables)["set_has_field_bit_builder"] = + GenerateSetBit(builderBitIndex) + ";"; + (*variables)["clear_has_field_bit_builder"] = + GenerateClearBit(builderBitIndex) + ";"; + + (*variables)["is_field_present_message"] = GenerateGetBit(messageBitIndex); + } else { + (*variables)["set_has_field_bit_message"] = ""; + (*variables)["set_has_field_bit_builder"] = ""; + (*variables)["clear_has_field_bit_builder"] = ""; + + if (descriptor->type() == FieldDescriptor::TYPE_BYTES) { + (*variables)["is_field_present_message"] = + "!" + (*variables)["name"] + "_.isEmpty()"; + } else { + (*variables)["is_field_present_message"] = + (*variables)["name"] + "_ != " + (*variables)["default"]; + } + } + + // For repated builders, one bit is used for whether the array is immutable. + (*variables)["get_mutable_bit_builder"] = GenerateGetBit(builderBitIndex); + (*variables)["set_mutable_bit_builder"] = GenerateSetBit(builderBitIndex); + (*variables)["clear_mutable_bit_builder"] = GenerateClearBit(builderBitIndex); + + // For repeated fields, one bit is used for whether the array is immutable + // in the parsing constructor. + (*variables)["get_mutable_bit_parser"] = + GenerateGetBitMutableLocal(builderBitIndex); + (*variables)["set_mutable_bit_parser"] = + GenerateSetBitMutableLocal(builderBitIndex); + + (*variables)["get_has_field_bit_from_local"] = + GenerateGetBitFromLocal(builderBitIndex); + (*variables)["set_has_field_bit_to_local"] = + GenerateSetBitToLocal(messageBitIndex); } + } // namespace // =================================================================== -PrimitiveFieldGenerator:: -PrimitiveFieldGenerator(const FieldDescriptor* descriptor) - : descriptor_(descriptor) { - SetPrimitiveVariables(descriptor, &variables_); +ImmutablePrimitiveFieldGenerator:: +ImmutablePrimitiveFieldGenerator(const FieldDescriptor* descriptor, + int messageBitIndex, + int builderBitIndex, + Context* context) + : descriptor_(descriptor), messageBitIndex_(messageBitIndex), + builderBitIndex_(builderBitIndex), context_(context), + name_resolver_(context->GetNameResolver()) { + SetPrimitiveVariables(descriptor, messageBitIndex, builderBitIndex, + context->GetFieldGeneratorInfo(descriptor), + name_resolver_, &variables_); } -PrimitiveFieldGenerator::~PrimitiveFieldGenerator() {} +ImmutablePrimitiveFieldGenerator::~ImmutablePrimitiveFieldGenerator() {} + +int ImmutablePrimitiveFieldGenerator::GetNumBitsForMessage() const { + return 1; +} + +int ImmutablePrimitiveFieldGenerator::GetNumBitsForBuilder() const { + return 1; +} -void PrimitiveFieldGenerator:: +void ImmutablePrimitiveFieldGenerator:: +GenerateInterfaceMembers(io::Printer* printer) const { + if (SupportFieldPresence(descriptor_->file())) { + WriteFieldDocComment(printer, descriptor_); + printer->Print(variables_, + "$deprecation$boolean has$capitalized_name$();\n"); + } + WriteFieldDocComment(printer, descriptor_); + printer->Print(variables_, + "$deprecation$$type$ get$capitalized_name$();\n"); +} + +void ImmutablePrimitiveFieldGenerator:: GenerateMembers(io::Printer* printer) const { printer->Print(variables_, - "private boolean has$capitalized_name$;\n" - "private $type$ $name$_ = $default$;\n" - "public boolean has$capitalized_name$() { return has$capitalized_name$; }\n" - "public $type$ get$capitalized_name$() { return $name$_; }\n"); + "private $field_type$ $name$_;\n"); + PrintExtraFieldInfo(variables_, printer); + if (SupportFieldPresence(descriptor_->file())) { + WriteFieldDocComment(printer, descriptor_); + printer->Print(variables_, + "$deprecation$public boolean has$capitalized_name$() {\n" + " return $get_has_field_bit_message$;\n" + "}\n"); + } + + WriteFieldDocComment(printer, descriptor_); + printer->Print(variables_, + "$deprecation$public $type$ get$capitalized_name$() {\n" + " return $name$_;\n" + "}\n"); } -void PrimitiveFieldGenerator:: +void ImmutablePrimitiveFieldGenerator:: GenerateBuilderMembers(io::Printer* printer) const { printer->Print(variables_, - "public boolean has$capitalized_name$() {\n" - " return result.has$capitalized_name$();\n" - "}\n" - "public $type$ get$capitalized_name$() {\n" - " return result.get$capitalized_name$();\n" - "}\n" - "public Builder set$capitalized_name$($type$ value) {\n" + "private $field_type$ $name$_ $default_init$;\n"); + + if (SupportFieldPresence(descriptor_->file())) { + WriteFieldDocComment(printer, descriptor_); + printer->Print(variables_, + "$deprecation$public boolean has$capitalized_name$() {\n" + " return $get_has_field_bit_builder$;\n" + "}\n"); + } + + WriteFieldDocComment(printer, descriptor_); + printer->Print(variables_, + "$deprecation$public $type$ get$capitalized_name$() {\n" + " return $name$_;\n" + "}\n"); + + WriteFieldDocComment(printer, descriptor_); + printer->Print(variables_, + "$deprecation$public Builder set$capitalized_name$($type$ value) {\n" "$null_check$" - " result.has$capitalized_name$ = true;\n" - " result.$name$_ = value;\n" + " $set_has_field_bit_builder$\n" + " $name$_ = value;\n" + " $on_changed$\n" " return this;\n" - "}\n" - "public Builder clear$capitalized_name$() {\n" - " result.has$capitalized_name$ = false;\n"); + "}\n"); + + WriteFieldDocComment(printer, descriptor_); + printer->Print(variables_, + "$deprecation$public Builder clear$capitalized_name$() {\n" + " $clear_has_field_bit_builder$\n"); JavaType type = GetJavaType(descriptor_); if (type == JAVATYPE_STRING || type == JAVATYPE_BYTES) { // The default value is not a simple literal so we want to avoid executing // it multiple times. Instead, get the default out of the default instance. printer->Print(variables_, - " result.$name$_ = getDefaultInstance().get$capitalized_name$();\n"); + " $name$_ = getDefaultInstance().get$capitalized_name$();\n"); } else { printer->Print(variables_, - " result.$name$_ = $default$;\n"); + " $name$_ = $default$;\n"); } printer->Print(variables_, + " $on_changed$\n" " return this;\n" "}\n"); } -void PrimitiveFieldGenerator:: +void ImmutablePrimitiveFieldGenerator:: +GenerateFieldBuilderInitializationCode(io::Printer* printer) const { + // noop for primitives +} + +void ImmutablePrimitiveFieldGenerator:: GenerateInitializationCode(io::Printer* printer) const { - // Initialized inline. + printer->Print(variables_, "$name$_ = $default$;\n"); } -void PrimitiveFieldGenerator:: -GenerateMergingCode(io::Printer* printer) const { +void ImmutablePrimitiveFieldGenerator:: +GenerateBuilderClearCode(io::Printer* printer) const { printer->Print(variables_, - "if (other.has$capitalized_name$()) {\n" - " set$capitalized_name$(other.get$capitalized_name$());\n" - "}\n"); + "$name$_ = $default$;\n" + "$clear_has_field_bit_builder$\n"); +} + +void ImmutablePrimitiveFieldGenerator:: +GenerateMergingCode(io::Printer* printer) const { + if (SupportFieldPresence(descriptor_->file())) { + printer->Print(variables_, + "if (other.has$capitalized_name$()) {\n" + " set$capitalized_name$(other.get$capitalized_name$());\n" + "}\n"); + } else { + printer->Print(variables_, + "if (other.get$capitalized_name$() != $default$) {\n" + " set$capitalized_name$(other.get$capitalized_name$());\n" + "}\n"); + } } -void PrimitiveFieldGenerator:: +void ImmutablePrimitiveFieldGenerator:: GenerateBuildingCode(io::Printer* printer) const { - // Nothing to do here for primitive types. + if (SupportFieldPresence(descriptor_->file())) { + printer->Print(variables_, + "if ($get_has_field_bit_from_local$) {\n" + " $set_has_field_bit_to_local$;\n" + "}\n"); + } + printer->Print(variables_, + "result.$name$_ = $name$_;\n"); } -void PrimitiveFieldGenerator:: +void ImmutablePrimitiveFieldGenerator:: GenerateParsingCode(io::Printer* printer) const { printer->Print(variables_, - "set$capitalized_name$(input.read$capitalized_type$());\n"); + "$set_has_field_bit_message$\n" + "$name$_ = input.read$capitalized_type$();\n"); +} + +void ImmutablePrimitiveFieldGenerator:: +GenerateParsingDoneCode(io::Printer* printer) const { + // noop for primitives. } -void PrimitiveFieldGenerator:: +void ImmutablePrimitiveFieldGenerator:: GenerateSerializationCode(io::Printer* printer) const { printer->Print(variables_, - "if (has$capitalized_name$()) {\n" - " output.write$capitalized_type$($number$, get$capitalized_name$());\n" + "if ($is_field_present_message$) {\n" + " output.write$capitalized_type$($number$, $name$_);\n" "}\n"); } -void PrimitiveFieldGenerator:: +void ImmutablePrimitiveFieldGenerator:: GenerateSerializedSizeCode(io::Printer* printer) const { printer->Print(variables_, - "if (has$capitalized_name$()) {\n" + "if ($is_field_present_message$) {\n" " size += com.google.protobuf.CodedOutputStream\n" - " .compute$capitalized_type$Size($number$, get$capitalized_name$());\n" + " .compute$capitalized_type$Size($number$, $name$_);\n" "}\n"); } -string PrimitiveFieldGenerator::GetBoxedType() const { +void ImmutablePrimitiveFieldGenerator:: +GenerateEqualsCode(io::Printer* printer) const { + switch (GetJavaType(descriptor_)) { + case JAVATYPE_INT: + case JAVATYPE_LONG: + case JAVATYPE_BOOLEAN: + printer->Print(variables_, + "result = result && (get$capitalized_name$()\n" + " == other.get$capitalized_name$());\n"); + break; + + case JAVATYPE_FLOAT: + printer->Print(variables_, + "result = result && (\n" + " java.lang.Float.floatToIntBits(get$capitalized_name$())\n" + " == java.lang.Float.floatToIntBits(\n" + " other.get$capitalized_name$()));\n"); + break; + + case JAVATYPE_DOUBLE: + printer->Print(variables_, + "result = result && (\n" + " java.lang.Double.doubleToLongBits(get$capitalized_name$())\n" + " == java.lang.Double.doubleToLongBits(\n" + " other.get$capitalized_name$()));\n"); + break; + + case JAVATYPE_STRING: + case JAVATYPE_BYTES: + printer->Print(variables_, + "result = result && get$capitalized_name$()\n" + " .equals(other.get$capitalized_name$());\n"); + break; + + case JAVATYPE_ENUM: + case JAVATYPE_MESSAGE: + default: + GOOGLE_LOG(FATAL) << "Can't get here."; + break; + } +} + +void ImmutablePrimitiveFieldGenerator:: +GenerateHashCode(io::Printer* printer) const { + printer->Print(variables_, + "hash = (37 * hash) + $constant_name$;\n"); + switch (GetJavaType(descriptor_)) { + case JAVATYPE_INT: + printer->Print(variables_, + "hash = (53 * hash) + get$capitalized_name$();\n"); + break; + + case JAVATYPE_LONG: + printer->Print(variables_, + "hash = (53 * hash) + com.google.protobuf.Internal.hashLong(\n" + " get$capitalized_name$());\n"); + break; + + case JAVATYPE_BOOLEAN: + printer->Print(variables_, + "hash = (53 * hash) + com.google.protobuf.Internal.hashBoolean(\n" + " get$capitalized_name$());\n"); + break; + + case JAVATYPE_FLOAT: + printer->Print(variables_, + "hash = (53 * hash) + java.lang.Float.floatToIntBits(\n" + " get$capitalized_name$());\n"); + break; + + case JAVATYPE_DOUBLE: + printer->Print(variables_, + "hash = (53 * hash) + com.google.protobuf.Internal.hashLong(\n" + " java.lang.Double.doubleToLongBits(get$capitalized_name$()));\n"); + break; + + case JAVATYPE_STRING: + case JAVATYPE_BYTES: + printer->Print(variables_, + "hash = (53 * hash) + get$capitalized_name$().hashCode();\n"); + break; + + case JAVATYPE_ENUM: + case JAVATYPE_MESSAGE: + default: + GOOGLE_LOG(FATAL) << "Can't get here."; + break; + } +} + +string ImmutablePrimitiveFieldGenerator::GetBoxedType() const { return BoxedPrimitiveTypeName(GetJavaType(descriptor_)); } // =================================================================== -RepeatedPrimitiveFieldGenerator:: -RepeatedPrimitiveFieldGenerator(const FieldDescriptor* descriptor) - : descriptor_(descriptor) { - SetPrimitiveVariables(descriptor, &variables_); +ImmutablePrimitiveOneofFieldGenerator:: +ImmutablePrimitiveOneofFieldGenerator(const FieldDescriptor* descriptor, + int messageBitIndex, + int builderBitIndex, + Context* context) + : ImmutablePrimitiveFieldGenerator( + descriptor, messageBitIndex, builderBitIndex, context) { + const OneofGeneratorInfo* info = + context->GetOneofGeneratorInfo(descriptor->containing_oneof()); + SetCommonOneofVariables(descriptor, info, &variables_); } -RepeatedPrimitiveFieldGenerator::~RepeatedPrimitiveFieldGenerator() {} +ImmutablePrimitiveOneofFieldGenerator:: +~ImmutablePrimitiveOneofFieldGenerator() {} -void RepeatedPrimitiveFieldGenerator:: +void ImmutablePrimitiveOneofFieldGenerator:: GenerateMembers(io::Printer* printer) const { + PrintExtraFieldInfo(variables_, printer); + if (SupportFieldPresence(descriptor_->file())) { + WriteFieldDocComment(printer, descriptor_); + printer->Print(variables_, + "$deprecation$public boolean has$capitalized_name$() {\n" + " return $has_oneof_case_message$;\n" + "}\n"); + } + + WriteFieldDocComment(printer, descriptor_); + printer->Print(variables_, + "$deprecation$public $type$ get$capitalized_name$() {\n" + " if ($has_oneof_case_message$) {\n" + " return ($boxed_type$) $oneof_name$_;\n" + " }\n" + " return $default$;\n" + "}\n"); +} + + +void ImmutablePrimitiveOneofFieldGenerator:: +GenerateBuilderMembers(io::Printer* printer) const { + if (SupportFieldPresence(descriptor_->file())) { + WriteFieldDocComment(printer, descriptor_); + printer->Print(variables_, + "$deprecation$public boolean has$capitalized_name$() {\n" + " return $has_oneof_case_message$;\n" + "}\n"); + } + + WriteFieldDocComment(printer, descriptor_); + printer->Print(variables_, + "$deprecation$public $type$ get$capitalized_name$() {\n" + " if ($has_oneof_case_message$) {\n" + " return ($boxed_type$) $oneof_name$_;\n" + " }\n" + " return $default$;\n" + "}\n"); + + WriteFieldDocComment(printer, descriptor_); printer->Print(variables_, - "private java.util.List<$boxed_type$> $name$_ =\n" - " java.util.Collections.emptyList();\n" - "public java.util.List<$boxed_type$> get$capitalized_name$List() {\n" + "$deprecation$public Builder set$capitalized_name$($type$ value) {\n" + "$null_check$" + " $set_oneof_case_message$;\n" + " $oneof_name$_ = value;\n" + " $on_changed$\n" + " return this;\n" + "}\n"); + + WriteFieldDocComment(printer, descriptor_); + printer->Print(variables_, + "$deprecation$public Builder clear$capitalized_name$() {\n" + " if ($has_oneof_case_message$) {\n" + " $clear_oneof_case_message$;\n" + " $oneof_name$_ = null;\n" + " $on_changed$\n" + " }\n" + " return this;\n" + "}\n"); +} + +void ImmutablePrimitiveOneofFieldGenerator:: +GenerateBuildingCode(io::Printer* printer) const { + printer->Print(variables_, + "if ($has_oneof_case_message$) {\n" + " result.$oneof_name$_ = $oneof_name$_;\n" + "}\n"); +} + +void ImmutablePrimitiveOneofFieldGenerator:: +GenerateMergingCode(io::Printer* printer) const { + printer->Print(variables_, + "set$capitalized_name$(other.get$capitalized_name$());\n"); +} + +void ImmutablePrimitiveOneofFieldGenerator:: +GenerateParsingCode(io::Printer* printer) const { + printer->Print(variables_, + "$set_oneof_case_message$;\n" + "$oneof_name$_ = input.read$capitalized_type$();\n"); +} + +void ImmutablePrimitiveOneofFieldGenerator:: +GenerateSerializationCode(io::Printer* printer) const { + printer->Print(variables_, + "if ($has_oneof_case_message$) {\n" + " output.write$capitalized_type$(\n" + " $number$, ($type$)(($boxed_type$) $oneof_name$_));\n" + "}\n"); +} + +void ImmutablePrimitiveOneofFieldGenerator:: +GenerateSerializedSizeCode(io::Printer* printer) const { + printer->Print(variables_, + "if ($has_oneof_case_message$) {\n" + " size += com.google.protobuf.CodedOutputStream\n" + " .compute$capitalized_type$Size(\n" + " $number$, ($type$)(($boxed_type$) $oneof_name$_));\n" + "}\n"); +} + +// =================================================================== + +RepeatedImmutablePrimitiveFieldGenerator:: +RepeatedImmutablePrimitiveFieldGenerator(const FieldDescriptor* descriptor, + int messageBitIndex, + int builderBitIndex, + Context* context) + : descriptor_(descriptor), messageBitIndex_(messageBitIndex), + builderBitIndex_(builderBitIndex), context_(context), + name_resolver_(context->GetNameResolver()) { + SetPrimitiveVariables(descriptor, messageBitIndex, builderBitIndex, + context->GetFieldGeneratorInfo(descriptor), + name_resolver_, &variables_); +} + +RepeatedImmutablePrimitiveFieldGenerator:: +~RepeatedImmutablePrimitiveFieldGenerator() {} + +int RepeatedImmutablePrimitiveFieldGenerator::GetNumBitsForMessage() const { + return 0; +} + +int RepeatedImmutablePrimitiveFieldGenerator::GetNumBitsForBuilder() const { + return 1; +} + +void RepeatedImmutablePrimitiveFieldGenerator:: +GenerateInterfaceMembers(io::Printer* printer) const { + WriteFieldDocComment(printer, descriptor_); + printer->Print(variables_, + "$deprecation$java.util.List<$boxed_type$> get$capitalized_name$List();\n"); + WriteFieldDocComment(printer, descriptor_); + printer->Print(variables_, + "$deprecation$int get$capitalized_name$Count();\n"); + WriteFieldDocComment(printer, descriptor_); + printer->Print(variables_, + "$deprecation$$type$ get$capitalized_name$(int index);\n"); +} + + +void RepeatedImmutablePrimitiveFieldGenerator:: +GenerateMembers(io::Printer* printer) const { + printer->Print(variables_, + "private $field_list_type$ $name$_;\n"); + PrintExtraFieldInfo(variables_, printer); + WriteFieldDocComment(printer, descriptor_); + printer->Print(variables_, + "$deprecation$public java.util.List<$boxed_type$>\n" + " get$capitalized_name$List() {\n" " return $name$_;\n" // note: unmodifiable list - "}\n" - "public int get$capitalized_name$Count() { return $name$_.size(); }\n" - "public $type$ get$capitalized_name$(int index) {\n" + "}\n"); + WriteFieldDocComment(printer, descriptor_); + printer->Print(variables_, + "$deprecation$public int get$capitalized_name$Count() {\n" + " return $name$_.size();\n" + "}\n"); + WriteFieldDocComment(printer, descriptor_); + printer->Print(variables_, + "$deprecation$public $type$ get$capitalized_name$(int index) {\n" " return $name$_.get(index);\n" "}\n"); @@ -308,92 +626,170 @@ GenerateMembers(io::Printer* printer) const { } } -void RepeatedPrimitiveFieldGenerator:: +void RepeatedImmutablePrimitiveFieldGenerator:: GenerateBuilderMembers(io::Printer* printer) const { + // One field is the list and the bit field keeps track of whether the + // list is immutable. If it's immutable, the invariant is that it must + // either an instance of Collections.emptyList() or it's an ArrayList + // wrapped in a Collections.unmodifiableList() wrapper and nobody else has + // a refererence to the underlying ArrayList. This invariant allows us to + // share instances of lists between protocol buffers avoiding expensive + // memory allocations. Note, immutable is a strong guarantee here -- not + // just that the list cannot be modified via the reference but that the + // list can never be modified. + printer->Print(variables_, + "private $field_list_type$ $name$_ = $empty_list$;\n"); + printer->Print(variables_, + "private void ensure$capitalized_name$IsMutable() {\n" + " if (!$get_mutable_bit_builder$) {\n" + " $name$_ = new java.util.ArrayList<$boxed_type$>($name$_);\n" + " $set_mutable_bit_builder$;\n" + " }\n" + "}\n"); + // Note: We return an unmodifiable list because otherwise the caller // could hold on to the returned list and modify it after the message // has been built, thus mutating the message which is supposed to be // immutable. - "public java.util.List<$boxed_type$> get$capitalized_name$List() {\n" - " return java.util.Collections.unmodifiableList(result.$name$_);\n" - "}\n" - "public int get$capitalized_name$Count() {\n" - " return result.get$capitalized_name$Count();\n" - "}\n" - "public $type$ get$capitalized_name$(int index) {\n" - " return result.get$capitalized_name$(index);\n" - "}\n" - "public Builder set$capitalized_name$(int index, $type$ value) {\n" + WriteFieldDocComment(printer, descriptor_); + printer->Print(variables_, + "$deprecation$public java.util.List<$boxed_type$>\n" + " get$capitalized_name$List() {\n" + " return java.util.Collections.unmodifiableList($name$_);\n" + "}\n"); + WriteFieldDocComment(printer, descriptor_); + printer->Print(variables_, + "$deprecation$public int get$capitalized_name$Count() {\n" + " return $name$_.size();\n" + "}\n"); + WriteFieldDocComment(printer, descriptor_); + printer->Print(variables_, + "$deprecation$public $type$ get$capitalized_name$(int index) {\n" + " return $name$_.get(index);\n" + "}\n"); + WriteFieldDocComment(printer, descriptor_); + printer->Print(variables_, + "$deprecation$public Builder set$capitalized_name$(\n" + " int index, $type$ value) {\n" "$null_check$" - " result.$name$_.set(index, value);\n" + " ensure$capitalized_name$IsMutable();\n" + " $name$_.set(index, value);\n" + " $on_changed$\n" " return this;\n" - "}\n" - "public Builder add$capitalized_name$($type$ value) {\n" + "}\n"); + WriteFieldDocComment(printer, descriptor_); + printer->Print(variables_, + "$deprecation$public Builder add$capitalized_name$($type$ value) {\n" "$null_check$" - " if (result.$name$_.isEmpty()) {\n" - " result.$name$_ = new java.util.ArrayList<$boxed_type$>();\n" - " }\n" - " result.$name$_.add(value);\n" + " ensure$capitalized_name$IsMutable();\n" + " $name$_.add(value);\n" + " $on_changed$\n" " return this;\n" - "}\n" - "public Builder addAll$capitalized_name$(\n" + "}\n"); + WriteFieldDocComment(printer, descriptor_); + printer->Print(variables_, + "$deprecation$public Builder addAll$capitalized_name$(\n" " java.lang.Iterable<? extends $boxed_type$> values) {\n" - " if (result.$name$_.isEmpty()) {\n" - " result.$name$_ = new java.util.ArrayList<$boxed_type$>();\n" - " }\n" - " super.addAll(values, result.$name$_);\n" + " ensure$capitalized_name$IsMutable();\n" + " com.google.protobuf.AbstractMessageLite.Builder.addAll(\n" + " values, $name$_);\n" + " $on_changed$\n" " return this;\n" - "}\n" - "public Builder clear$capitalized_name$() {\n" - " result.$name$_ = java.util.Collections.emptyList();\n" + "}\n"); + WriteFieldDocComment(printer, descriptor_); + printer->Print(variables_, + "$deprecation$public Builder clear$capitalized_name$() {\n" + " $name$_ = $empty_list$;\n" + " $clear_mutable_bit_builder$;\n" + " $on_changed$\n" " return this;\n" "}\n"); } -void RepeatedPrimitiveFieldGenerator:: +void RepeatedImmutablePrimitiveFieldGenerator:: +GenerateFieldBuilderInitializationCode(io::Printer* printer) const { + // noop for primitives +} + +void RepeatedImmutablePrimitiveFieldGenerator:: GenerateInitializationCode(io::Printer* printer) const { - // Initialized inline. + printer->Print(variables_, "$name$_ = $empty_list$;\n"); } -void RepeatedPrimitiveFieldGenerator:: +void RepeatedImmutablePrimitiveFieldGenerator:: +GenerateBuilderClearCode(io::Printer* printer) const { + printer->Print(variables_, + "$name$_ = $empty_list$;\n" + "$clear_mutable_bit_builder$;\n"); +} + +void RepeatedImmutablePrimitiveFieldGenerator:: GenerateMergingCode(io::Printer* printer) const { + // The code below does two optimizations: + // 1. If the other list is empty, there's nothing to do. This ensures we + // don't allocate a new array if we already have an immutable one. + // 2. If the other list is non-empty and our current list is empty, we can + // reuse the other list which is guaranteed to be immutable. printer->Print(variables_, "if (!other.$name$_.isEmpty()) {\n" - " if (result.$name$_.isEmpty()) {\n" - " result.$name$_ = new java.util.ArrayList<$boxed_type$>();\n" + " if ($name$_.isEmpty()) {\n" + " $name$_ = other.$name$_;\n" + " $clear_mutable_bit_builder$;\n" + " } else {\n" + " ensure$capitalized_name$IsMutable();\n" + " $name$_.addAll(other.$name$_);\n" " }\n" - " result.$name$_.addAll(other.$name$_);\n" + " $on_changed$\n" "}\n"); } -void RepeatedPrimitiveFieldGenerator:: +void RepeatedImmutablePrimitiveFieldGenerator:: GenerateBuildingCode(io::Printer* printer) const { + // The code below ensures that the result has an immutable list. If our + // list is immutable, we can just reuse it. If not, we make it immutable. printer->Print(variables_, - "if (result.$name$_ != java.util.Collections.EMPTY_LIST) {\n" - " result.$name$_ =\n" - " java.util.Collections.unmodifiableList(result.$name$_);\n" - "}\n"); + "if ($get_mutable_bit_builder$) {\n" + " $name$_ = java.util.Collections.unmodifiableList($name$_);\n" + " $clear_mutable_bit_builder$;\n" + "}\n" + "result.$name$_ = $name$_;\n"); } -void RepeatedPrimitiveFieldGenerator:: +void RepeatedImmutablePrimitiveFieldGenerator:: GenerateParsingCode(io::Printer* printer) const { printer->Print(variables_, - "add$capitalized_name$(input.read$capitalized_type$());\n"); + "if (!$get_mutable_bit_parser$) {\n" + " $name$_ = new java.util.ArrayList<$boxed_type$>();\n" + " $set_mutable_bit_parser$;\n" + "}\n" + "$name$_.add(input.read$capitalized_type$());\n"); } -void RepeatedPrimitiveFieldGenerator:: +void RepeatedImmutablePrimitiveFieldGenerator:: GenerateParsingCodeFromPacked(io::Printer* printer) const { printer->Print(variables_, "int length = input.readRawVarint32();\n" "int limit = input.pushLimit(length);\n" + "if (!$get_mutable_bit_parser$ && input.getBytesUntilLimit() > 0) {\n" + " $name$_ = new java.util.ArrayList<$boxed_type$>();\n" + " $set_mutable_bit_parser$;\n" + "}\n" "while (input.getBytesUntilLimit() > 0) {\n" - " add$capitalized_name$(input.read$capitalized_type$());\n" + " $name$_.add(input.read$capitalized_type$());\n" "}\n" "input.popLimit(limit);\n"); } -void RepeatedPrimitiveFieldGenerator:: +void RepeatedImmutablePrimitiveFieldGenerator:: +GenerateParsingDoneCode(io::Printer* printer) const { + printer->Print(variables_, + "if ($get_mutable_bit_parser$) {\n" + " $name$_ = java.util.Collections.unmodifiableList($name$_);\n" + "}\n"); +} + +void RepeatedImmutablePrimitiveFieldGenerator:: GenerateSerializationCode(io::Printer* printer) const { if (descriptor_->options().packed()) { printer->Print(variables_, @@ -401,18 +797,18 @@ GenerateSerializationCode(io::Printer* printer) const { " output.writeRawVarint32($tag$);\n" " output.writeRawVarint32($name$MemoizedSerializedSize);\n" "}\n" - "for ($type$ element : get$capitalized_name$List()) {\n" - " output.write$capitalized_type$NoTag(element);\n" + "for (int i = 0; i < $name$_.size(); i++) {\n" + " output.write$capitalized_type$NoTag($name$_.get(i));\n" "}\n"); } else { printer->Print(variables_, - "for ($type$ element : get$capitalized_name$List()) {\n" - " output.write$capitalized_type$($number$, element);\n" + "for (int i = 0; i < $name$_.size(); i++) {\n" + " output.write$capitalized_type$($number$, $name$_.get(i));\n" "}\n"); } } -void RepeatedPrimitiveFieldGenerator:: +void RepeatedImmutablePrimitiveFieldGenerator:: GenerateSerializedSizeCode(io::Printer* printer) const { printer->Print(variables_, "{\n" @@ -421,9 +817,9 @@ GenerateSerializedSizeCode(io::Printer* printer) const { if (FixedSize(GetType(descriptor_)) == -1) { printer->Print(variables_, - "for ($type$ element : get$capitalized_name$List()) {\n" + "for (int i = 0; i < $name$_.size(); i++) {\n" " dataSize += com.google.protobuf.CodedOutputStream\n" - " .compute$capitalized_type$SizeNoTag(element);\n" + " .compute$capitalized_type$SizeNoTag($name$_.get(i));\n" "}\n"); } else { printer->Print(variables_, @@ -455,7 +851,23 @@ GenerateSerializedSizeCode(io::Printer* printer) const { printer->Print("}\n"); } -string RepeatedPrimitiveFieldGenerator::GetBoxedType() const { +void RepeatedImmutablePrimitiveFieldGenerator:: +GenerateEqualsCode(io::Printer* printer) const { + printer->Print(variables_, + "result = result && get$capitalized_name$List()\n" + " .equals(other.get$capitalized_name$List());\n"); +} + +void RepeatedImmutablePrimitiveFieldGenerator:: +GenerateHashCode(io::Printer* printer) const { + printer->Print(variables_, + "if (get$capitalized_name$Count() > 0) {\n" + " hash = (37 * hash) + $constant_name$;\n" + " hash = (53 * hash) + get$capitalized_name$List().hashCode();\n" + "}\n"); +} + +string RepeatedImmutablePrimitiveFieldGenerator::GetBoxedType() const { return BoxedPrimitiveTypeName(GetJavaType(descriptor_)); } |