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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.
#ifndef GOOGLE_PROTOBUF_COMPILER_OBJECTIVEC_HELPERS_H__
#define GOOGLE_PROTOBUF_COMPILER_OBJECTIVEC_HELPERS_H__
#include <string>
#include <vector>
#include <google/protobuf/descriptor.h>
#include <google/protobuf/descriptor.pb.h>
namespace google {
namespace protobuf {
namespace compiler {
namespace objectivec {
// Generator options (see objectivec_generator.cc for a description of each):
struct Options {
Options();
string expected_prefixes_path;
string generate_for_named_framework;
string named_framework_to_proto_path_mappings_path;
};
// Escape C++ trigraphs by escaping question marks to "\?".
string EscapeTrigraphs(const string& to_escape);
// Strips ".proto" or ".protodevel" from the end of a filename.
string StripProto(const string& filename);
// Remove white space from either end of a StringPiece.
void StringPieceTrimWhitespace(StringPiece* input);
// Returns true if the name requires a ns_returns_not_retained attribute applied
// to it.
bool IsRetainedName(const string& name);
// Returns true if the name starts with "init" and will need to have special
// handling under ARC.
bool IsInitName(const string& name);
// Gets the path of the file we're going to generate (sans the .pb.h
// extension). The path will be dependent on the objectivec package
// declared in the proto package.
string FilePath(const FileDescriptor* file);
// Just like FilePath(), but without the directory part.
string FilePathBasename(const FileDescriptor* file);
// Gets the name of the root class we'll generate in the file. This class
// is not meant for external consumption, but instead contains helpers that
// the rest of the classes need
string FileClassName(const FileDescriptor* file);
// These return the fully-qualified class name corresponding to the given
// descriptor.
string ClassName(const Descriptor* descriptor);
string EnumName(const EnumDescriptor* descriptor);
// Returns the fully-qualified name of the enum value corresponding to the
// the descriptor.
string EnumValueName(const EnumValueDescriptor* descriptor);
// Returns the name of the enum value corresponding to the descriptor.
string EnumValueShortName(const EnumValueDescriptor* descriptor);
// Reverse what an enum does.
string UnCamelCaseEnumShortName(const string& name);
// Returns the name to use for the extension (used as the method off the file's
// Root class).
string ExtensionMethodName(const FieldDescriptor* descriptor);
// Returns the transformed field name.
string FieldName(const FieldDescriptor* field);
string FieldNameCapitalized(const FieldDescriptor* field);
// Returns the transformed oneof name.
string OneofEnumName(const OneofDescriptor* descriptor);
string OneofName(const OneofDescriptor* descriptor);
string OneofNameCapitalized(const OneofDescriptor* descriptor);
inline bool HasFieldPresence(const FileDescriptor* file) {
return file->syntax() != FileDescriptor::SYNTAX_PROTO3;
}
inline bool HasPreservingUnknownEnumSemantics(const FileDescriptor* file) {
return file->syntax() == FileDescriptor::SYNTAX_PROTO3;
}
inline bool IsMapEntryMessage(const Descriptor* descriptor) {
return descriptor->options().map_entry();
}
// Reverse of the above.
string UnCamelCaseFieldName(const string& name, const FieldDescriptor* field);
enum ObjectiveCType {
OBJECTIVECTYPE_INT32,
OBJECTIVECTYPE_UINT32,
OBJECTIVECTYPE_INT64,
OBJECTIVECTYPE_UINT64,
OBJECTIVECTYPE_FLOAT,
OBJECTIVECTYPE_DOUBLE,
OBJECTIVECTYPE_BOOLEAN,
OBJECTIVECTYPE_STRING,
OBJECTIVECTYPE_DATA,
OBJECTIVECTYPE_ENUM,
OBJECTIVECTYPE_MESSAGE
};
template<class TDescriptor>
string GetOptionalDeprecatedAttribute(const TDescriptor* descriptor, bool preSpace = true, bool postNewline = false) {
if (descriptor->options().deprecated()) {
string result = "DEPRECATED_ATTRIBUTE";
if (preSpace) {
result.insert(0, " ");
}
if (postNewline) {
result.append("\n");
}
return result;
} else {
return "";
}
}
string GetCapitalizedType(const FieldDescriptor* field);
ObjectiveCType GetObjectiveCType(FieldDescriptor::Type field_type);
inline ObjectiveCType GetObjectiveCType(const FieldDescriptor* field) {
return GetObjectiveCType(field->type());
}
bool IsPrimitiveType(const FieldDescriptor* field);
bool IsReferenceType(const FieldDescriptor* field);
string GPBGenericValueFieldName(const FieldDescriptor* field);
string DefaultValue(const FieldDescriptor* field);
bool HasNonZeroDefaultValue(const FieldDescriptor* field);
string BuildFlagsString(const vector<string>& strings);
// Builds HeaderDoc/appledoc style comments out of the comments in the .proto
// file.
string BuildCommentsString(const SourceLocation& location,
bool prefer_single_line);
// The name the commonly used by the library when built as a framework.
// This lines up to the name used in the CocoaPod.
extern const char* const ProtobufLibraryFrameworkName;
// Returns the CPP symbol name to use as the gate for framework style imports
// for the given framework name to use.
string ProtobufFrameworkImportSymbol(const string& framework_name);
// Checks if the file is one of the proto's bundled with the library.
bool IsProtobufLibraryBundledProtoFile(const FileDescriptor* file);
// Checks the prefix for a given file and outputs any warnings needed, if
// there are flat out errors, then out_error is filled in and the result is
// false.
bool ValidateObjCClassPrefix(const FileDescriptor* file,
const Options& generation_options,
string* out_error);
// Generate decode data needed for ObjC's GPBDecodeTextFormatName() to transform
// the input into the expected output.
class LIBPROTOC_EXPORT TextFormatDecodeData {
public:
TextFormatDecodeData();
~TextFormatDecodeData();
void AddString(int32 key, const string& input_for_decode,
const string& desired_output);
size_t num_entries() const { return entries_.size(); }
string Data() const;
static string DecodeDataForString(const string& input_for_decode,
const string& desired_output);
private:
GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(TextFormatDecodeData);
typedef std::pair<int32, string> DataEntry;
vector<DataEntry> entries_;
};
// Helper for parsing simple files.
class LIBPROTOC_EXPORT LineConsumer {
public:
LineConsumer();
virtual ~LineConsumer();
virtual bool ConsumeLine(const StringPiece& line, string* out_error) = 0;
};
bool ParseSimpleFile(
const string& path, LineConsumer* line_consumer, string* out_error);
// Helper class for parsing framework import mappings and generating
// import statements.
class LIBPROTOC_EXPORT ImportWriter {
public:
ImportWriter(const string& generate_for_named_framework,
const string& named_framework_to_proto_path_mappings_path);
~ImportWriter();
void AddFile(const FileDescriptor* file, const string& header_extension);
void Print(io::Printer *printer) const;
private:
class ProtoFrameworkCollector : public LineConsumer {
public:
ProtoFrameworkCollector(map<string, string>* inout_proto_file_to_framework_name)
: map_(inout_proto_file_to_framework_name) {}
virtual bool ConsumeLine(const StringPiece& line, string* out_error);
private:
map<string, string>* map_;
};
void ParseFrameworkMappings();
const string generate_for_named_framework_;
const string named_framework_to_proto_path_mappings_path_;
map<string, string> proto_file_to_framework_name_;
bool need_to_parse_mapping_file_;
vector<string> protobuf_framework_imports_;
vector<string> protobuf_non_framework_imports_;
vector<string> other_framework_imports_;
vector<string> other_imports_;
};
} // namespace objectivec
} // namespace compiler
} // namespace protobuf
} // namespace google
#endif // GOOGLE_PROTOBUF_COMPILER_OBJECTIVEC_HELPERS_H__
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