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// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. All rights reserved.
// http://code.google.com/p/protobuf/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// 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");
if (descriptor_->type() == FieldDescriptor::TYPE_BYTES) {
printer->Print(variables_,
"inline void set_$name$(const void* value, size_t size);\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");
if (descriptor_->type() == FieldDescriptor::TYPE_BYTES) {
printer->Print(variables_,
"inline void $classname$::set_$name$(const void* value, size_t size) {\n"
" _set_bit($index$);\n"
" if ($name$_ == &_default_$name$_) {\n"
" $name$_ = new ::std::string;\n"
" }\n"
" $name$_->assign(reinterpret_cast<const char*>(value), size);\n"
"}\n");
}
printer->Print(variables_,
"inline ::std::string* $classname$::mutable_$name$() {\n"
" _set_bit($index$);\n"
" if ($name$_ == &_default_$name$_) {\n");
if (descriptor_->default_value_string().empty()) {
printer->Print(variables_,
" $name$_ = new ::std::string;\n");
} else {
printer->Print(variables_,
" $name$_ = new ::std::string(_default_$name$_);\n");
}
printer->Print(variables_,
" }\n"
" return $name$_;\n"
"}\n");
}
void StringFieldGenerator::
GenerateNonInlineAccessorDefinitions(io::Printer* printer) const {
if (descriptor_->default_value_string().empty()) {
printer->Print(variables_,
"const ::std::string $classname$::_default_$name$_;");
} else {
printer->Print(variables_,
"const ::std::string $classname$::_default_$name$_($default$);");
}
}
void StringFieldGenerator::
GenerateClearingCode(io::Printer* printer) const {
if (descriptor_->default_value_string().empty()) {
printer->Print(variables_,
"if ($name$_ != &_default_$name$_) {\n"
" $name$_->clear();\n"
"}\n");
} else {
printer->Print(variables_,
"if ($name$_ != &_default_$name$_) {\n"
" $name$_->assign(_default_$name$_);\n"
"}\n");
}
}
void StringFieldGenerator::
GenerateMergingCode(io::Printer* printer) const {
printer->Print(variables_, "set_$name$(from.$name$());\n");
}
void StringFieldGenerator::
GenerateSwappingCode(io::Printer* printer) const {
printer->Print(variables_, "std::swap($name$_, other->$name$_);\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_->type() == FieldDescriptor::TYPE_BYTES) {
printer->Print(variables_,
"inline void set_$name$(int index, const void* value, size_t size);\n"
"inline void add_$name$(const void* value, size_t size);\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");
if (descriptor_->type() == FieldDescriptor::TYPE_BYTES) {
printer->Print(variables_,
"inline void "
"$classname$::set_$name$(int index, const void* value, size_t size) {\n"
" $name$_.Mutable(index)->assign(\n"
" reinterpret_cast<const char*>(value), size);\n"
"}\n"
"inline void $classname$::add_$name$(const void* value, size_t size) {\n"
" $name$_.Add()->assign(reinterpret_cast<const char*>(value), size);\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::
GenerateSwappingCode(io::Printer* printer) const {
printer->Print(variables_, "$name$_.Swap(&other->$name$_);\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
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