| // 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 <google/protobuf/compiler/cpp/cpp_string_field.h> |
| #include <google/protobuf/compiler/cpp/cpp_helpers.h> |
| #include <google/protobuf/io/printer.h> |
| #include <google/protobuf/wire_format_inl.h> |
| #include <google/protobuf/descriptor.pb.h> |
| #include <google/protobuf/stubs/strutil.h> |
| |
| namespace google { |
| namespace protobuf { |
| namespace compiler { |
| namespace cpp { |
| |
| using internal::WireFormat; |
| |
| namespace { |
| |
| // TODO(kenton): Factor out a "SetCommonFieldVariables()" to get rid of |
| // repeat code between this and the other field types. |
| void SetStringVariables(const FieldDescriptor* descriptor, |
| map<string, string>* variables) { |
| (*variables)["name"] = FieldName(descriptor); |
| (*variables)["default"] = |
| "\"" + CEscape(descriptor->default_value_string()) + "\""; |
| (*variables)["index"] = SimpleItoa(descriptor->index()); |
| (*variables)["number"] = SimpleItoa(descriptor->number()); |
| (*variables)["classname"] = ClassName(FieldScope(descriptor), false); |
| (*variables)["declared_type"] = DeclaredTypeMethodName(descriptor->type()); |
| (*variables)["tag_size"] = SimpleItoa( |
| WireFormat::TagSize(descriptor->number(), descriptor->type())); |
| } |
| |
| } // namespace |
| |
| // =================================================================== |
| |
| StringFieldGenerator:: |
| StringFieldGenerator(const FieldDescriptor* descriptor) |
| : descriptor_(descriptor) { |
| SetStringVariables(descriptor, &variables_); |
| } |
| |
| StringFieldGenerator::~StringFieldGenerator() {} |
| |
| void StringFieldGenerator:: |
| GeneratePrivateMembers(io::Printer* printer) const { |
| printer->Print(variables_, |
| "::std::string* $name$_;\n" |
| "static const ::std::string _default_$name$_;\n"); |
| } |
| |
| void StringFieldGenerator:: |
| GenerateAccessorDeclarations(io::Printer* printer) const { |
| // If we're using StringFieldGenerator for a field with a ctype, it's |
| // because that ctype isn't actually implemented. In particular, this is |
| // true of ctype=CORD and ctype=STRING_PIECE in the open source release. |
| // We aren't releasing Cord because it has too many Google-specific |
| // dependencies and we aren't releasing StringPiece because it's hardly |
| // useful outside of Google and because it would get confusing to have |
| // multiple instances of the StringPiece class in different libraries (PCRE |
| // already includes it for their C++ bindings, which came from Google). |
| // |
| // In any case, we make all the accessors private while still actually |
| // using a string to represent the field internally. This way, we can |
| // guarantee that if we do ever implement the ctype, it won't break any |
| // existing users who might be -- for whatever reason -- already using .proto |
| // files that applied the ctype. The field can still be accessed via the |
| // reflection interface since the reflection interface is independent of |
| // the string's underlying representation. |
| if (descriptor_->options().has_ctype()) { |
| printer->Outdent(); |
| printer->Print( |
| " private:\n" |
| " // Hidden due to unknown ctype option.\n"); |
| printer->Indent(); |
| } |
| |
| printer->Print(variables_, |
| "inline const ::std::string& $name$() const;\n" |
| "inline void set_$name$(const ::std::string& value);\n" |
| "inline void set_$name$(const char* value);\n"); |
| |
| printer->Print(variables_, |
| "inline ::std::string* mutable_$name$();\n"); |
| |
| if (descriptor_->options().has_ctype()) { |
| printer->Outdent(); |
| printer->Print(" public:\n"); |
| printer->Indent(); |
| } |
| } |
| |
| void StringFieldGenerator:: |
| GenerateInlineAccessorDefinitions(io::Printer* printer) const { |
| printer->Print(variables_, |
| "inline const ::std::string& $classname$::$name$() const {\n" |
| " return *$name$_;\n" |
| "}\n" |
| "inline void $classname$::set_$name$(const ::std::string& value) {\n" |
| " _set_bit($index$);\n" |
| " if ($name$_ == &_default_$name$_) {\n" |
| " $name$_ = new ::std::string;\n" |
| " }\n" |
| " $name$_->assign(value);\n" |
| "}\n" |
| "inline void $classname$::set_$name$(const char* value) {\n" |
| " _set_bit($index$);\n" |
| " if ($name$_ == &_default_$name$_) {\n" |
| " $name$_ = new ::std::string;\n" |
| " }\n" |
| " $name$_->assign(value);\n" |
| "}\n"); |
| printer->Print(variables_, |
| "inline ::std::string* $classname$::mutable_$name$() {\n" |
| " _set_bit($index$);\n" |
| " if ($name$_ == &_default_$name$_) {\n"); |
| if (descriptor_->has_default_value()) { |
| printer->Print(variables_, |
| " $name$_ = new ::std::string(_default_$name$_);\n"); |
| } else { |
| printer->Print(variables_, |
| " $name$_ = new ::std::string;\n"); |
| } |
| printer->Print(variables_, |
| " }\n" |
| " return $name$_;\n" |
| "}\n"); |
| } |
| |
| void StringFieldGenerator:: |
| GenerateNonInlineAccessorDefinitions(io::Printer* printer) const { |
| if (descriptor_->has_default_value()) { |
| printer->Print(variables_, |
| "const ::std::string $classname$::_default_$name$_($default$);"); |
| } else { |
| printer->Print(variables_, |
| "const ::std::string $classname$::_default_$name$_;"); |
| } |
| } |
| |
| void StringFieldGenerator:: |
| GenerateClearingCode(io::Printer* printer) const { |
| if (descriptor_->has_default_value()) { |
| printer->Print(variables_, |
| "if ($name$_ != &_default_$name$_) {\n" |
| " $name$_->assign(_default_$name$_);\n" |
| "}\n"); |
| } else { |
| printer->Print(variables_, |
| "if ($name$_ != &_default_$name$_) {\n" |
| " $name$_->clear();\n" |
| "}\n"); |
| } |
| } |
| |
| void StringFieldGenerator:: |
| GenerateMergingCode(io::Printer* printer) const { |
| printer->Print(variables_, "set_$name$(from.$name$());\n"); |
| } |
| |
| void StringFieldGenerator:: |
| GenerateInitializer(io::Printer* printer) const { |
| printer->Print(variables_, |
| ",\n$name$_(const_cast< ::std::string*>(&_default_$name$_))"); |
| } |
| |
| void StringFieldGenerator:: |
| GenerateDestructorCode(io::Printer* printer) const { |
| printer->Print(variables_, |
| "if ($name$_ != &_default_$name$_) {\n" |
| " delete $name$_;\n" |
| "}\n"); |
| } |
| |
| void StringFieldGenerator:: |
| GenerateMergeFromCodedStream(io::Printer* printer) const { |
| printer->Print(variables_, |
| "DO_(::google::protobuf::internal::WireFormat::Read$declared_type$(" |
| "input, mutable_$name$()));\n"); |
| } |
| |
| void StringFieldGenerator:: |
| GenerateSerializeWithCachedSizes(io::Printer* printer) const { |
| printer->Print(variables_, |
| "DO_(::google::protobuf::internal::WireFormat::Write$declared_type$(" |
| "$number$, this->$name$(), output));\n"); |
| } |
| |
| void StringFieldGenerator:: |
| GenerateByteSize(io::Printer* printer) const { |
| printer->Print(variables_, |
| "total_size += $tag_size$ +\n" |
| " ::google::protobuf::internal::WireFormat::$declared_type$Size(this->$name$());\n"); |
| } |
| |
| // =================================================================== |
| |
| RepeatedStringFieldGenerator:: |
| RepeatedStringFieldGenerator(const FieldDescriptor* descriptor) |
| : descriptor_(descriptor) { |
| SetStringVariables(descriptor, &variables_); |
| } |
| |
| RepeatedStringFieldGenerator::~RepeatedStringFieldGenerator() {} |
| |
| void RepeatedStringFieldGenerator:: |
| GeneratePrivateMembers(io::Printer* printer) const { |
| printer->Print(variables_, |
| "::google::protobuf::RepeatedPtrField< ::std::string> $name$_;\n"); |
| } |
| |
| void RepeatedStringFieldGenerator:: |
| GenerateAccessorDeclarations(io::Printer* printer) const { |
| // See comment above about unknown ctypes. |
| if (descriptor_->options().has_ctype()) { |
| printer->Outdent(); |
| printer->Print( |
| " private:\n" |
| " // Hidden due to unknown ctype option.\n"); |
| printer->Indent(); |
| } |
| |
| printer->Print(variables_, |
| "inline const ::google::protobuf::RepeatedPtrField< ::std::string>& $name$() const;\n" |
| "inline ::google::protobuf::RepeatedPtrField< ::std::string>* mutable_$name$();\n" |
| "inline const ::std::string& $name$(int index) const;\n" |
| "inline ::std::string* mutable_$name$(int index);\n" |
| "inline void set_$name$(int index, const ::std::string& value);\n" |
| "inline void set_$name$(int index, const char* value);\n" |
| "inline ::std::string* add_$name$();\n" |
| "inline void add_$name$(const ::std::string& value);\n" |
| "inline void add_$name$(const char* value);\n"); |
| |
| if (descriptor_->options().has_ctype()) { |
| printer->Outdent(); |
| printer->Print(" public:\n"); |
| printer->Indent(); |
| } |
| } |
| |
| void RepeatedStringFieldGenerator:: |
| GenerateInlineAccessorDefinitions(io::Printer* printer) const { |
| printer->Print(variables_, |
| "inline const ::google::protobuf::RepeatedPtrField< ::std::string>&\n" |
| "$classname$::$name$() const {\n" |
| " return $name$_;\n" |
| "}\n" |
| "inline ::google::protobuf::RepeatedPtrField< ::std::string>*\n" |
| "$classname$::mutable_$name$() {\n" |
| " return &$name$_;\n" |
| "}\n" |
| "inline const ::std::string& $classname$::$name$(int index) const {\n" |
| " return $name$_.Get(index);\n" |
| "}\n" |
| "inline ::std::string* $classname$::mutable_$name$(int index) {\n" |
| " return $name$_.Mutable(index);\n" |
| "}\n" |
| "inline void $classname$::set_$name$(int index, const ::std::string& value) {\n" |
| " $name$_.Mutable(index)->assign(value);\n" |
| "}\n" |
| "inline void $classname$::set_$name$(int index, const char* value) {\n" |
| " $name$_.Mutable(index)->assign(value);\n" |
| "}\n" |
| "inline ::std::string* $classname$::add_$name$() {\n" |
| " return $name$_.Add();\n" |
| "}\n" |
| "inline void $classname$::add_$name$(const ::std::string& value) {\n" |
| " $name$_.Add()->assign(value);\n" |
| "}\n" |
| "inline void $classname$::add_$name$(const char* value) {\n" |
| " $name$_.Add()->assign(value);\n" |
| "}\n"); |
| } |
| |
| void RepeatedStringFieldGenerator:: |
| GenerateClearingCode(io::Printer* printer) const { |
| printer->Print(variables_, "$name$_.Clear();\n"); |
| } |
| |
| void RepeatedStringFieldGenerator:: |
| GenerateMergingCode(io::Printer* printer) const { |
| printer->Print(variables_, "$name$_.MergeFrom(from.$name$_);\n"); |
| } |
| |
| void RepeatedStringFieldGenerator:: |
| GenerateInitializer(io::Printer* printer) const { |
| // Not needed for repeated fields. |
| } |
| |
| void RepeatedStringFieldGenerator:: |
| GenerateMergeFromCodedStream(io::Printer* printer) const { |
| printer->Print(variables_, |
| "DO_(::google::protobuf::internal::WireFormat::Read$declared_type$(\n" |
| " input, add_$name$()));\n"); |
| } |
| |
| void RepeatedStringFieldGenerator:: |
| GenerateSerializeWithCachedSizes(io::Printer* printer) const { |
| printer->Print(variables_, |
| "DO_(::google::protobuf::internal::WireFormat::Write$declared_type$(" |
| "$number$, this->$name$(i), output));\n"); |
| } |
| |
| void RepeatedStringFieldGenerator:: |
| GenerateByteSize(io::Printer* printer) const { |
| printer->Print(variables_, |
| "total_size += $tag_size$ * $name$_size();\n" |
| "for (int i = 0; i < $name$_size(); i++) {\n" |
| " total_size += ::google::protobuf::internal::WireFormat::$declared_type$Size(\n" |
| " this->$name$(i));\n" |
| "}\n"); |
| } |
| |
| } // namespace cpp |
| } // namespace compiler |
| } // namespace protobuf |
| } // namespace google |