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// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. All rights reserved.
// 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
// 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.
#ifndef GOOGLE_PROTOBUF_COMPILER_CSHARP_HELPERS_H__
#define GOOGLE_PROTOBUF_COMPILER_CSHARP_HELPERS_H__
#include <string>
#include "google/protobuf/compiler/code_generator.h"
#include "y_absl/strings/string_view.h"
#include "google/protobuf/compiler/csharp/names.h"
#include "google/protobuf/descriptor.h"
#include "google/protobuf/descriptor.pb.h"
#include "google/protobuf/io/printer.h"
#include "google/protobuf/port.h"
#include "google/protobuf/port_def.inc"
#include "google/protobuf/stubs/common.h"
namespace google {
namespace protobuf {
namespace compiler {
namespace csharp {
struct Options;
class FieldGeneratorBase;
// TODO: start using this enum.
enum CSharpType {
CSHARPTYPE_INT32 = 1,
CSHARPTYPE_INT64 = 2,
CSHARPTYPE_UINT32 = 3,
CSHARPTYPE_UINT64 = 4,
CSHARPTYPE_FLOAT = 5,
CSHARPTYPE_DOUBLE = 6,
CSHARPTYPE_BOOL = 7,
CSHARPTYPE_STRING = 8,
CSHARPTYPE_BYTESTRING = 9,
CSHARPTYPE_MESSAGE = 10,
CSHARPTYPE_ENUM = 11,
MAX_CSHARPTYPE = 11
};
// Converts field type to corresponding C# type.
CSharpType GetCSharpType(FieldDescriptor::Type type);
TProtoStringType GetFieldName(const FieldDescriptor* descriptor);
TProtoStringType GetFieldConstantName(const FieldDescriptor* field);
TProtoStringType GetPropertyName(const FieldDescriptor* descriptor);
TProtoStringType GetOneofCaseName(const FieldDescriptor* descriptor);
int GetFixedSize(FieldDescriptor::Type type);
// Note that we wouldn't normally want to export this (we're not expecting
// it to be used outside libprotoc itself) but this exposes it for testing.
TProtoStringType PROTOC_EXPORT GetEnumValueName(y_absl::string_view enum_name,
y_absl::string_view enum_value_name);
// TODO(jtattermusch): perhaps we could move this to strutil
TProtoStringType StringToBase64(y_absl::string_view input);
TProtoStringType FileDescriptorToBase64(const FileDescriptor* descriptor);
FieldGeneratorBase* CreateFieldGenerator(const FieldDescriptor* descriptor,
int presenceIndex,
const Options* options);
TProtoStringType GetFullExtensionName(const FieldDescriptor* descriptor);
bool IsNullable(const FieldDescriptor* descriptor);
// Determines whether the given message is a map entry message,
// i.e. one implicitly created by protoc due to a map<key, value> field.
inline bool IsMapEntryMessage(const Descriptor* descriptor) {
return descriptor->options().map_entry();
}
// Checks if this descriptor is for a group and gets its end tag or 0 if it's not a group
uint GetGroupEndTag(const Descriptor* descriptor);
// Determines whether we're generating code for the proto representation of
// descriptors etc, for use in the runtime. This is the only type which is
// allowed to use proto2 syntax, and it generates internal classes.
inline bool IsDescriptorProto(const FileDescriptor* descriptor) {
return descriptor->name() == "google/protobuf/descriptor.proto" ||
descriptor->name() == "net/proto2/proto/descriptor.proto";
}
// Determines whether the given message is an options message within descriptor.proto.
inline bool IsDescriptorOptionMessage(const Descriptor* descriptor) {
if (!IsDescriptorProto(descriptor->file())) {
return false;
}
const TProtoStringType name = descriptor->name();
return name == "FileOptions" ||
name == "MessageOptions" ||
name == "FieldOptions" ||
name == "OneofOptions" ||
name == "EnumOptions" ||
name == "EnumValueOptions" ||
name == "ServiceOptions" ||
name == "MethodOptions";
}
inline bool IsWrapperType(const FieldDescriptor* descriptor) {
return descriptor->type() == FieldDescriptor::TYPE_MESSAGE &&
descriptor->message_type()->file()->name() == "google/protobuf/wrappers.proto";
}
inline bool IsProto2(const FileDescriptor* descriptor) {
return descriptor->syntax() == FileDescriptor::SYNTAX_PROTO2;
}
inline bool SupportsPresenceApi(const FieldDescriptor* descriptor) {
// Unlike most languages, we don't generate Has/Clear members for message
// types, because they can always be set to null in C#. They're not really
// needed for oneof fields in proto2 either, as everything can be done via
// oneof case, but we follow the convention from other languages. Proto3
// oneof fields never have Has/Clear members - but will also never have
// the explicit optional keyword either.
//
// None of the built-in helpers (descriptor->has_presence() etc) describe
// quite the behavior we want, so the rules are explicit below.
if (descriptor->is_repeated() ||
descriptor->type() == FieldDescriptor::TYPE_MESSAGE) {
return false;
}
// has_optional_keyword() has more complex rules for proto2, but that
// doesn't matter given the first part of this condition.
return IsProto2(descriptor->file()) || descriptor->has_optional_keyword();
}
inline bool RequiresPresenceBit(const FieldDescriptor* descriptor) {
return SupportsPresenceApi(descriptor) &&
!IsNullable(descriptor) &&
!descriptor->is_extension() &&
!descriptor->real_containing_oneof();
}
} // namespace csharp
} // namespace compiler
} // namespace protobuf
} // namespace google
#include "google/protobuf/port_undef.inc"
#endif // GOOGLE_PROTOBUF_COMPILER_CSHARP_HELPERS_H__
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