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 | 394 |
1 files changed, 324 insertions, 70 deletions
diff --git a/src/google/protobuf/compiler/java/java_primitive_field.cc b/src/google/protobuf/compiler/java/java_primitive_field.cc index f6179bfa..addb8819 100644 --- a/src/google/protobuf/compiler/java/java_primitive_field.cc +++ b/src/google/protobuf/compiler/java/java_primitive_field.cc @@ -154,15 +154,24 @@ int FixedSize(FieldDescriptor::Type type) { } void SetPrimitiveVariables(const FieldDescriptor* descriptor, + int messageBitIndex, + int builderBitIndex, map<string, string>* variables) { (*variables)["name"] = UnderscoresToCamelCase(descriptor); (*variables)["capitalized_name"] = UnderscoresToCapitalizedCamelCase(descriptor); + (*variables)["constant_name"] = FieldConstantName(descriptor); (*variables)["number"] = SimpleItoa(descriptor->number()); (*variables)["type"] = PrimitiveTypeName(GetJavaType(descriptor)); (*variables)["boxed_type"] = BoxedPrimitiveTypeName(GetJavaType(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"] = DefaultValue(descriptor); + (*variables)["default_init"] = IsDefaultValueJavaDefault(descriptor) ? + "" : ("= " + DefaultValue(descriptor)); (*variables)["capitalized_type"] = GetCapitalizedType(descriptor); (*variables)["tag"] = SimpleItoa(WireFormat::MakeTag(descriptor)); (*variables)["tag_size"] = SimpleItoa( @@ -175,67 +184,135 @@ 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();" : ""; + + // 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); + (*variables)["set_has_field_bit_builder"] = GenerateSetBit(builderBitIndex); + (*variables)["clear_has_field_bit_builder"] = + GenerateClearBit(builderBitIndex); + + // 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); + + (*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_); +PrimitiveFieldGenerator(const FieldDescriptor* descriptor, + int messageBitIndex, + int builderBitIndex) + : descriptor_(descriptor), messageBitIndex_(messageBitIndex), + builderBitIndex_(builderBitIndex) { + SetPrimitiveVariables(descriptor, messageBitIndex, builderBitIndex, + &variables_); } PrimitiveFieldGenerator::~PrimitiveFieldGenerator() {} +int PrimitiveFieldGenerator::GetNumBitsForMessage() const { + return 1; +} + +int PrimitiveFieldGenerator::GetNumBitsForBuilder() const { + return 1; +} + +void PrimitiveFieldGenerator:: +GenerateInterfaceMembers(io::Printer* printer) const { + printer->Print(variables_, + "$deprecation$boolean has$capitalized_name$();\n" + "$deprecation$$type$ get$capitalized_name$();\n"); +} + void PrimitiveFieldGenerator:: 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" + "$deprecation$public boolean has$capitalized_name$() {\n" + " return $get_has_field_bit_message$;\n" + "}\n"); + + printer->Print(variables_, + "$deprecation$public $type$ get$capitalized_name$() {\n" + " return $name$_;\n" + "}\n"); } void PrimitiveFieldGenerator:: 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" + "$deprecation$public boolean has$capitalized_name$() {\n" + " return $get_has_field_bit_builder$;\n" + "}\n"); + + printer->Print(variables_, + "$deprecation$public $type$ get$capitalized_name$() {\n" + " return $name$_;\n" + "}\n"); + + 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"); + "$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:: +GenerateFieldBuilderInitializationCode(io::Printer* printer) const { + // noop for primitives +} + +void PrimitiveFieldGenerator:: GenerateInitializationCode(io::Printer* printer) const { - // Initialized inline. + printer->Print(variables_, "$name$_ = $default$;\n"); +} + +void PrimitiveFieldGenerator:: +GenerateBuilderClearCode(io::Printer* printer) const { + printer->Print(variables_, + "$name$_ = $default$;\n" + "$clear_has_field_bit_builder$;\n"); } void PrimitiveFieldGenerator:: @@ -248,32 +325,121 @@ GenerateMergingCode(io::Printer* printer) const { void PrimitiveFieldGenerator:: GenerateBuildingCode(io::Printer* printer) const { - // Nothing to do here for primitive types. + printer->Print(variables_, + "if ($get_has_field_bit_from_local$) {\n" + " $set_has_field_bit_to_local$;\n" + "}\n" + "result.$name$_ = $name$_;\n"); } void PrimitiveFieldGenerator:: GenerateParsingCode(io::Printer* printer) const { printer->Print(variables_, - "set$capitalized_name$(input.read$capitalized_type$());\n"); + "$set_has_field_bit_builder$;\n" + "$name$_ = input.read$capitalized_type$();\n"); } void PrimitiveFieldGenerator:: GenerateSerializationCode(io::Printer* printer) const { printer->Print(variables_, - "if (has$capitalized_name$()) {\n" - " output.write$capitalized_type$($number$, get$capitalized_name$());\n" + "if ($get_has_field_bit_message$) {\n" + " output.write$capitalized_type$($number$, $name$_);\n" "}\n"); } void PrimitiveFieldGenerator:: GenerateSerializedSizeCode(io::Printer* printer) const { printer->Print(variables_, - "if (has$capitalized_name$()) {\n" + "if ($get_has_field_bit_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"); } +void PrimitiveFieldGenerator:: +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 && (Float.floatToIntBits(get$capitalized_name$())" + " == Float.floatToIntBits(other.get$capitalized_name$()));\n"); + break; + + case JAVATYPE_DOUBLE: + printer->Print(variables_, + "result = result && (Double.doubleToLongBits(get$capitalized_name$())" + " == Double.doubleToLongBits(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 PrimitiveFieldGenerator:: +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) + hashLong(get$capitalized_name$());\n"); + break; + + case JAVATYPE_BOOLEAN: + printer->Print(variables_, + "hash = (53 * hash) + hashBoolean(get$capitalized_name$());\n"); + break; + + case JAVATYPE_FLOAT: + printer->Print(variables_, + "hash = (53 * hash) + Float.floatToIntBits(\n" + " get$capitalized_name$());\n"); + break; + + case JAVATYPE_DOUBLE: + printer->Print(variables_, + "hash = (53 * hash) + hashLong(\n" + " 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 PrimitiveFieldGenerator::GetBoxedType() const { return BoxedPrimitiveTypeName(GetJavaType(descriptor_)); } @@ -281,23 +447,46 @@ string PrimitiveFieldGenerator::GetBoxedType() const { // =================================================================== RepeatedPrimitiveFieldGenerator:: -RepeatedPrimitiveFieldGenerator(const FieldDescriptor* descriptor) - : descriptor_(descriptor) { - SetPrimitiveVariables(descriptor, &variables_); +RepeatedPrimitiveFieldGenerator(const FieldDescriptor* descriptor, + int messageBitIndex, + int builderBitIndex) + : descriptor_(descriptor), messageBitIndex_(messageBitIndex), + builderBitIndex_(builderBitIndex) { + SetPrimitiveVariables(descriptor, messageBitIndex, builderBitIndex, + &variables_); } RepeatedPrimitiveFieldGenerator::~RepeatedPrimitiveFieldGenerator() {} +int RepeatedPrimitiveFieldGenerator::GetNumBitsForMessage() const { + return 0; +} + +int RepeatedPrimitiveFieldGenerator::GetNumBitsForBuilder() const { + return 1; +} + +void RepeatedPrimitiveFieldGenerator:: +GenerateInterfaceMembers(io::Printer* printer) const { + printer->Print(variables_, + "$deprecation$java.util.List<$boxed_type$> get$capitalized_name$List();\n" + "$deprecation$int get$capitalized_name$Count();\n" + "$deprecation$$type$ get$capitalized_name$(int index);\n"); +} + + void RepeatedPrimitiveFieldGenerator:: GenerateMembers(io::Printer* printer) const { 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" + "private $field_list_type$ $name$_;\n" + "$deprecation$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" + "$deprecation$public int get$capitalized_name$Count() {\n" + " return $name$_.size();\n" + "}\n" + "$deprecation$public $type$ get$capitalized_name$(int index) {\n" " return $name$_.get(index);\n" "}\n"); @@ -310,76 +499,125 @@ GenerateMembers(io::Printer* printer) const { void RepeatedPrimitiveFieldGenerator:: 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" + printer->Print(variables_, + "$deprecation$public java.util.List<$boxed_type$>\n" + " get$capitalized_name$List() {\n" + " return java.util.Collections.unmodifiableList($name$_);\n" "}\n" - "public int get$capitalized_name$Count() {\n" - " return result.get$capitalized_name$Count();\n" + "$deprecation$public int get$capitalized_name$Count() {\n" + " return $name$_.size();\n" "}\n" - "public $type$ get$capitalized_name$(int index) {\n" - " return result.get$capitalized_name$(index);\n" + "$deprecation$public $type$ get$capitalized_name$(int index) {\n" + " return $name$_.get(index);\n" "}\n" - "public Builder set$capitalized_name$(int index, $type$ value) {\n" + "$deprecation$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" + "$deprecation$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" + "$deprecation$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" + " super.addAll(values, $name$_);\n" + " $on_changed$\n" " return this;\n" "}\n" - "public Builder clear$capitalized_name$() {\n" - " result.$name$_ = java.util.Collections.emptyList();\n" + "$deprecation$public Builder clear$capitalized_name$() {\n" + " $name$_ = $empty_list$;\n" + " $clear_mutable_bit_builder$;\n" + " $on_changed$\n" " return this;\n" "}\n"); } void RepeatedPrimitiveFieldGenerator:: +GenerateFieldBuilderInitializationCode(io::Printer* printer) const { + // noop for primitives +} + +void RepeatedPrimitiveFieldGenerator:: GenerateInitializationCode(io::Printer* printer) const { - // Initialized inline. + printer->Print(variables_, "$name$_ = $empty_list$;\n"); +} + +void RepeatedPrimitiveFieldGenerator:: +GenerateBuilderClearCode(io::Printer* printer) const { + printer->Print(variables_, + "$name$_ = $empty_list$;\n" + "$clear_mutable_bit_builder$;\n"); } void RepeatedPrimitiveFieldGenerator:: 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:: 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:: GenerateParsingCode(io::Printer* printer) const { printer->Print(variables_, - "add$capitalized_name$(input.read$capitalized_type$());\n"); + "ensure$capitalized_name$IsMutable();\n" + "$name$_.add(input.read$capitalized_type$());\n"); } void RepeatedPrimitiveFieldGenerator:: @@ -401,13 +639,13 @@ 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"); } } @@ -421,9 +659,9 @@ 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_, @@ -455,6 +693,22 @@ GenerateSerializedSizeCode(io::Printer* printer) const { printer->Print("}\n"); } +void RepeatedPrimitiveFieldGenerator:: +GenerateEqualsCode(io::Printer* printer) const { + printer->Print(variables_, + "result = result && get$capitalized_name$List()\n" + " .equals(other.get$capitalized_name$List());\n"); +} + +void RepeatedPrimitiveFieldGenerator:: +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 RepeatedPrimitiveFieldGenerator::GetBoxedType() const { return BoxedPrimitiveTypeName(GetJavaType(descriptor_)); } |