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Diffstat (limited to 'src/google/protobuf/compiler/java/java_primitive_field.cc')
| -rw-r--r-- | src/google/protobuf/compiler/java/java_primitive_field.cc | 365 |
1 files changed, 365 insertions, 0 deletions
diff --git a/src/google/protobuf/compiler/java/java_primitive_field.cc b/src/google/protobuf/compiler/java/java_primitive_field.cc new file mode 100644 index 00000000..9138f2c9 --- /dev/null +++ b/src/google/protobuf/compiler/java/java_primitive_field.cc @@ -0,0 +1,365 @@ +// Protocol Buffers - Google's data interchange format +// Copyright 2008 Google Inc. +// http://code.google.com/p/protobuf/ +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Author: kenton@google.com (Kenton Varda) +// Based on original Protocol Buffers design by +// Sanjay Ghemawat, Jeff Dean, and others. + +#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_helpers.h> +#include <google/protobuf/io/printer.h> +#include <google/protobuf/stubs/strutil.h> +#include <google/protobuf/stubs/substitute.h> + +namespace google { +namespace protobuf { +namespace compiler { +namespace java { + +namespace { + +const char* PrimitiveTypeName(JavaType type) { + switch (type) { + case JAVATYPE_INT : return "int"; + case JAVATYPE_LONG : return "long"; + case JAVATYPE_FLOAT : return "float"; + case JAVATYPE_DOUBLE : return "double"; + case JAVATYPE_BOOLEAN: return "boolean"; + case JAVATYPE_STRING : return "java.lang.String"; + case JAVATYPE_BYTES : return "com.google.protobuf.ByteString"; + case JAVATYPE_ENUM : return NULL; + case JAVATYPE_MESSAGE: return NULL; + + // No default because we want the compiler to complain if any new + // JavaTypes are added. + } + + GOOGLE_LOG(FATAL) << "Can't get here."; + return NULL; +} + +const char* GetCapitalizedType(const FieldDescriptor* field) { + switch (field->type()) { + 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; +} + +bool AllPrintableAscii(const string& text) { + // Cannot use isprint() because it's locale-specific. :( + for (int i = 0; i < text.size(); i++) { + if ((text[i] < 0x20) || text[i] >= 0x7F) { + return false; + } + } + return true; +} + +string DefaultValue(const FieldDescriptor* field) { + // Switch on cpp_type since we need to know which default_value_* method + // of FieldDescriptor to call. + switch (field->cpp_type()) { + case FieldDescriptor::CPPTYPE_INT32: + return SimpleItoa(field->default_value_int32()); + case FieldDescriptor::CPPTYPE_UINT32: + // Need to print as a signed int since Java has no unsigned. + return SimpleItoa(static_cast<int32>(field->default_value_uint32())); + case FieldDescriptor::CPPTYPE_INT64: + return SimpleItoa(field->default_value_int64()) + "L"; + case FieldDescriptor::CPPTYPE_UINT64: + return SimpleItoa(static_cast<int64>(field->default_value_uint64())) + + "L"; + case FieldDescriptor::CPPTYPE_DOUBLE: + return SimpleDtoa(field->default_value_double()) + "D"; + case FieldDescriptor::CPPTYPE_FLOAT: + return SimpleFtoa(field->default_value_float()) + "F"; + case FieldDescriptor::CPPTYPE_BOOL: + return field->default_value_bool() ? "true" : "false"; + case FieldDescriptor::CPPTYPE_STRING: { + bool isBytes = field->type() == FieldDescriptor::TYPE_BYTES; + + if (!isBytes && AllPrintableAscii(field->default_value_string())) { + // All chars are ASCII and printable. In this case CEscape() works + // fine (it will only escape quotes and backslashes). + // Note: If this "optimization" is removed, DescriptorProtos will + // no longer be able to initialize itself due to bootstrapping + // problems. + return "\"" + CEscape(field->default_value_string()) + "\""; + } + + if (isBytes && !field->has_default_value()) { + return "com.google.protobuf.ByteString.EMPTY"; + } + + // Escaping strings correctly for Java and generating efficient + // initializers for ByteStrings are both tricky. We can sidestep the + // whole problem by just grabbing the default value from the descriptor. + return strings::Substitute( + "(($0) $1.getDescriptor().getFields().get($2).getDefaultValue())", + isBytes ? "com.google.protobuf.ByteString" : "java.lang.String", + ClassName(field->containing_type()), field->index()); + } + + case FieldDescriptor::CPPTYPE_ENUM: + case FieldDescriptor::CPPTYPE_MESSAGE: + GOOGLE_LOG(FATAL) << "Can't get here."; + return ""; + + // No default because we want the compiler to complain if any new + // types are added. + } + + GOOGLE_LOG(FATAL) << "Can't get here."; + return ""; +} + +void SetPrimitiveVariables(const FieldDescriptor* descriptor, + map<string, string>* variables) { + (*variables)["name"] = + UnderscoresToCamelCase(descriptor); + (*variables)["capitalized_name"] = + UnderscoresToCapitalizedCamelCase(descriptor); + (*variables)["number"] = SimpleItoa(descriptor->number()); + (*variables)["type"] = PrimitiveTypeName(GetJavaType(descriptor)); + (*variables)["boxed_type"] = BoxedPrimitiveTypeName(GetJavaType(descriptor)); + (*variables)["default"] = DefaultValue(descriptor); + (*variables)["capitalized_type"] = GetCapitalizedType(descriptor); +} + +} // namespace + +// =================================================================== + +PrimitiveFieldGenerator:: +PrimitiveFieldGenerator(const FieldDescriptor* descriptor) + : descriptor_(descriptor) { + SetPrimitiveVariables(descriptor, &variables_); +} + +PrimitiveFieldGenerator::~PrimitiveFieldGenerator() {} + +void PrimitiveFieldGenerator:: +GenerateMembers(io::Printer* printer) const { + printer->Print(variables_, + "private boolean has$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"); +} + +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" + " result.has$capitalized_name$ = true;\n" + " result.$name$_ = value;\n" + " return this;\n" + "}\n" + "public Builder clear$capitalized_name$() {\n" + " result.has$capitalized_name$ = false;\n" + " result.$name$_ = $default$;\n" + " return this;\n" + "}\n"); +} + +void PrimitiveFieldGenerator:: +GenerateMergingCode(io::Printer* printer) const { + printer->Print(variables_, + "if (other.has$capitalized_name$()) {\n" + " set$capitalized_name$(other.get$capitalized_name$());\n" + "}\n"); +} + +void PrimitiveFieldGenerator:: +GenerateBuildingCode(io::Printer* printer) const { + // Nothing to do here for primitive types. +} + +void PrimitiveFieldGenerator:: +GenerateParsingCode(io::Printer* printer) const { + printer->Print(variables_, + "set$capitalized_name$(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" + "}\n"); +} + +void PrimitiveFieldGenerator:: +GenerateSerializedSizeCode(io::Printer* printer) const { + printer->Print(variables_, + "if (has$capitalized_name$()) {\n" + " size += com.google.protobuf.CodedOutputStream\n" + " .compute$capitalized_type$Size($number$, get$capitalized_name$());\n" + "}\n"); +} + +string PrimitiveFieldGenerator::GetBoxedType() const { + return BoxedPrimitiveTypeName(GetJavaType(descriptor_)); +} + +// =================================================================== + +RepeatedPrimitiveFieldGenerator:: +RepeatedPrimitiveFieldGenerator(const FieldDescriptor* descriptor) + : descriptor_(descriptor) { + SetPrimitiveVariables(descriptor, &variables_); +} + +RepeatedPrimitiveFieldGenerator::~RepeatedPrimitiveFieldGenerator() {} + +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" + " 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" + " return $name$_.get(index);\n" + "}\n"); +} + +void RepeatedPrimitiveFieldGenerator:: +GenerateBuilderMembers(io::Printer* printer) const { + printer->Print(variables_, + // 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" + " result.$name$_.set(index, value);\n" + " return this;\n" + "}\n" + "public Builder add$capitalized_name$($type$ value) {\n" + " if (result.$name$_.isEmpty()) {\n" + " result.$name$_ = new java.util.ArrayList<$boxed_type$>();\n" + " }\n" + " result.$name$_.add(value);\n" + " return this;\n" + "}\n" + "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" + " return this;\n" + "}\n" + "public Builder clear$capitalized_name$() {\n" + " result.$name$_ = java.util.Collections.emptyList();\n" + " return this;\n" + "}\n"); +} + +void RepeatedPrimitiveFieldGenerator:: +GenerateMergingCode(io::Printer* printer) const { + printer->Print(variables_, + "if (!other.$name$_.isEmpty()) {\n" + " if (result.$name$_.isEmpty()) {\n" + " result.$name$_ = new java.util.ArrayList<$boxed_type$>();\n" + " }\n" + " result.$name$_.addAll(other.$name$_);\n" + "}\n"); +} + +void RepeatedPrimitiveFieldGenerator:: +GenerateBuildingCode(io::Printer* printer) const { + printer->Print(variables_, + "if (result.$name$_ != java.util.Collections.EMPTY_LIST) {\n" + " result.$name$_ =\n" + " java.util.Collections.unmodifiableList(result.$name$_);\n" + "}\n"); +} + +void RepeatedPrimitiveFieldGenerator:: +GenerateParsingCode(io::Printer* printer) const { + printer->Print(variables_, + "add$capitalized_name$(input.read$capitalized_type$());\n"); +} + +void RepeatedPrimitiveFieldGenerator:: +GenerateSerializationCode(io::Printer* printer) const { + printer->Print(variables_, + "for ($type$ element : get$capitalized_name$List()) {\n" + " output.write$capitalized_type$($number$, element);\n" + "}\n"); +} + +void RepeatedPrimitiveFieldGenerator:: +GenerateSerializedSizeCode(io::Printer* printer) const { + printer->Print(variables_, + "for ($type$ element : get$capitalized_name$List()) {\n" + " size += com.google.protobuf.CodedOutputStream\n" + " .compute$capitalized_type$Size($number$, element);\n" + "}\n"); +} + +string RepeatedPrimitiveFieldGenerator::GetBoxedType() const { + return BoxedPrimitiveTypeName(GetJavaType(descriptor_)); +} + +} // namespace java +} // namespace compiler +} // namespace protobuf +} // namespace google |