// 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.
//
// This file contains classes which describe a type of protocol message.
// You can use a message's descriptor to learn at runtime what fields
// it contains and what the types of those fields are. The Message
// interface also allows you to dynamically access and modify individual
// fields by passing the FieldDescriptor of the field you are interested
// in.
//
// Most users will not care about descriptors, because they will write
// code specific to certain protocol types and will simply use the classes
// generated by the protocol compiler directly. Advanced users who want
// to operate on arbitrary types (not known at compile time) may want to
// read descriptors in order to learn about the contents of a message.
// A very small number of users will want to construct their own
// Descriptors, either because they are implementing Message manually or
// because they are writing something like the protocol compiler.
//
// For an example of how you might use descriptors, see the code example
// at the top of message.h.
#ifndef GOOGLE_PROTOBUF_DESCRIPTOR_H__
#define GOOGLE_PROTOBUF_DESCRIPTOR_H__
#include <string>
#include <vector>
#include <google/protobuf/stubs/common.h>
// TYPE_BOOL is defined in the MacOS's ConditionalMacros.h.
#ifdef TYPE_BOOL
#undef TYPE_BOOL
#endif // TYPE_BOOL
namespace google {
namespace protobuf {
// Defined in this file.
class Descriptor;
class FieldDescriptor;
class EnumDescriptor;
class EnumValueDescriptor;
class ServiceDescriptor;
class MethodDescriptor;
class FileDescriptor;
class DescriptorDatabase;
class DescriptorPool;
// Defined in descriptor.proto
class DescriptorProto;
class FieldDescriptorProto;
class EnumDescriptorProto;
class EnumValueDescriptorProto;
class ServiceDescriptorProto;
class MethodDescriptorProto;
class FileDescriptorProto;
class MessageOptions;
class FieldOptions;
class EnumOptions;
class EnumValueOptions;
class ServiceOptions;
class MethodOptions;
class FileOptions;
class UninterpretedOption;
class SourceCodeInfo;
// Defined in message.h
class Message;
// Defined in descriptor.cc
class DescriptorBuilder;
class FileDescriptorTables;
// Defined in unknown_field_set.h.
class UnknownField;
// NB, all indices are zero-based.
struct SourceLocation {
int start_line;
int end_line;
int start_column;
int end_column;
// Doc comments found at the source location.
// TODO(kenton): Maybe this struct should have been named SourceInfo or
// something instead. Oh well.
string leading_comments;
string trailing_comments;
};
// Describes a type of protocol message, or a particular group within a
// message. To obtain the Descriptor for a given message object, call
// Message::GetDescriptor(). Generated message classes also have a
// static method called descriptor() which returns the type's descriptor.
// Use DescriptorPool to construct your own descriptors.
class LIBPROTOBUF_EXPORT Descriptor {
public:
// The name of the message type, not including its scope.
const string& name() const;
// The fully-qualified name of the message type, scope delimited by
// periods. For example, message type "Foo" which is declared in package
// "bar" has full name "bar.Foo". If a type "Baz" is nested within
// Foo, Baz's full_name is "bar.Foo.Baz". To get only the part that
// comes after the last '.', use name().
const string& full_name() const;
// Index of this descriptor within the file or containing type's message
// type array.
int index() const;
// The .proto file in which this message type was defined. Never NULL.
const FileDescriptor* file() const;
// If this Descriptor describes a nested type, this returns the type
// in which it is nested. Otherwise, returns NULL.
const Descriptor* containing_type() const;
// Get options for this message type. These are specified in the .proto file
// by placing lines like "option foo = 1234;" in the message definition.
// Allowed options are defined by MessageOptions in
// google/protobuf/descriptor.proto, and any available extensions of that
// message.
const MessageOptions& options() const;
// Write the contents of this Descriptor into the given DescriptorProto.
// The target DescriptorProto must be clear before calling this; if it
// isn't, the result may be garbage.
void CopyTo(DescriptorProto* proto) const;
// Write the contents of this decriptor in a human-readable form. Output
// will be suitable for re-parsing.
string DebugString() const;
// Field stuff -----------------------------------------------------
// The number of fields in this message type.
int field_count() const;
// Gets a field by index, where 0 <= index < field_count().
// These are returned in the order they were defined in the .proto file.
const FieldDescriptor* field(int index) const;
// Looks up a field by declared tag number. Returns NULL if no such field
// exists.
const FieldDescriptor* FindFieldByNumber(int number) const;
// Looks up a field by name. Returns NULL if no such field exists.
const FieldDescriptor* FindFieldByName(const string& name) const;
// Looks up a field by lowercased name (as returned by lowercase_name()).
// This lookup may be ambiguous if multiple field names differ only by case,
// in which case the field returned is chosen arbitrarily from the matches.
const FieldDescriptor* FindFieldByLowercaseName(
const string& lowercase_name) const;
// Looks up a field by camel-case name (as returned by camelcase_name()).
// This lookup may be ambiguous if multiple field names differ in a way that
// leads them to have identical camel-case names, in which case the field
// returned is chosen arbitrarily from the matches.
const FieldDescriptor* FindFieldByCamelcaseName(
const string& camelcase_name) const;
// Nested type stuff -----------------------------------------------
// The number of nested types in this message type.
int nested_type_count() const;
// Gets a nested type by index, where 0 <= index < nested_type_count().
// These are returned in the order they were defined in the .proto file.
const Descriptor* nested_type(int index) const;
// Looks up a nested type by name. Returns NULL if no such nested type
// exists.
const Descriptor* FindNestedTypeByName(const string& name) const;
// Enum stuff ------------------------------------------------------
// The number of enum types in this message type.
int enum_type_count() const;
// Gets an enum type by index, where 0 <= index < enum_type_count().
// These are returned in the order they were defined in the .proto file.
const EnumDescriptor* enum_type(int index) const;
// Looks up an enum type by name. Returns NULL if no such enum type exists.
const EnumDescriptor* FindEnumTypeByName(const string& name) const;
// Looks up an enum value by name, among all enum types in this message.
// Returns NULL if no such value exists.
const EnumValueDescriptor* FindEnumValueByName(const string& name) const;
// Extensions ------------------------------------------------------
// A range of field numbers which are designated for third-party
// extensions.
struct ExtensionRange {
int start; // inclusive
int end; // exclusive
};
// The number of extension ranges in this message type.
int extension_range_count() const;
// Gets an extension range by index, where 0 <= index <
// extension_range_count(). These are returned in the order they were defined
// in the .proto file.
const ExtensionRange* extension_range(int index) const;
// Returns true if the number is in one of the extension ranges.
bool IsExtensionNumber(int number) const;
// The number of extensions -- extending *other* messages -- that were
// defined nested within this message type's scope.
int extension_count() const;
// Get an extension by index, where 0 <= index < extension_count().
// These are returned in the order they were defined in the .proto file.
const FieldDescriptor* extension(int index) const;
// Looks up a named extension (which extends some *other* message type)
// defined within this message type's scope.
const FieldDescriptor* FindExtensionByName(const string& name) const;
// Similar to FindFieldByLowercaseName(), but finds extensions defined within
// this message type's scope.
const FieldDescriptor* FindExtensionByLowercaseName(const string& name) const;
// Similar to FindFieldByCamelcaseName(), but finds extensions defined within
// this message type's scope.
const FieldDescriptor* FindExtensionByCamelcaseName(const string& name) const;
// Source Location ---------------------------------------------------
// Updates |*out_location| to the source location of the complete
// extent of this message declaration. Returns false and leaves
// |*out_location| unchanged iff location information was not available.
bool GetSourceLocation(SourceLocation* out_location) const;
private:
typedef MessageOptions OptionsType;
// Internal version of DebugString; controls the level of indenting for
// correct depth
void DebugString(int depth, string *contents) const;
// Walks up the descriptor tree to generate the source location path
// to this descriptor from the file root.
void GetLocationPath(vector<int>* output) const;
const string* name_;
const string* full_name_;
const FileDescriptor* file_;
const Descriptor* containing_type_;
const MessageOptions* options_;
// True if this is a placeholder for an unknown type.
bool is_placeholder_;
// True if this is a placeholder and the type name wasn't fully-qualified.
bool is_unqualified_placeholder_;
int field_count_;
FieldDescriptor* fields_;
int nested_type_count_;
Descriptor* nested_types_;
int enum_type_count_;
EnumDescriptor* enum_types_;
int extension_range_count_;
ExtensionRange* extension_ranges_;
int extension_count_;
FieldDescriptor* extensions_;
// IMPORTANT: If you add a new field, make sure to search for all instances
// of Allocate<Descriptor>() and AllocateArray<Descriptor>() in descriptor.cc
// and update them to initialize the field.
// Must be constructed using DescriptorPool.
Descriptor() {}
friend class DescriptorBuilder;
friend class EnumDescriptor;
friend class FieldDescriptor;
friend class MethodDescriptor;
friend class FileDescriptor;
GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(Descriptor);
};
// Describes a single field of a message. To get the descriptor for a given
// field, first get the Descriptor for the message in which it is defined,
// then call Descriptor::FindFieldByName(). To get a FieldDescriptor for
// an extension, do one of the following:
// - Get the Descriptor or FileDescriptor for its containing scope, then
// call Descriptor::FindExtensionByName() or
// FileDescriptor::FindExtensionByName().
// - Given a DescriptorPool, call DescriptorPool::FindExtensionByNumber().
// - Given a Reflection for a message object, call
// Reflection::FindKnownExtensionByName() or
// Reflection::FindKnownExtensionByNumber().
// Use DescriptorPool to construct your own descriptors.
class LIBPROTOBUF_EXPORT FieldDescriptor {
public:
// Identifies a field type. 0 is reserved for errors. The order is weird
// for historical reasons. Types 12 and up are new in proto2.
enum Type {
TYPE_DOUBLE = 1, // double, exactly eight bytes on the wire.
TYPE_FLOAT = 2, // float, exactly four bytes on the wire.
TYPE_INT64 = 3, // int64, varint on the wire. Negative numbers
// take 10 bytes. Use TYPE_SINT64 if negative
// values are likely.
TYPE_UINT64 = 4, // uint64, varint on the wire.
TYPE_INT32 = 5, // int32, varint on the wire. Negative numbers
// take 10 bytes. Use TYPE_SINT32 if negative
// values are likely.
TYPE_FIXED64 = 6, // uint64, exactly eight bytes on the wire.
TYPE_FIXED32 = 7, // uint32, exactly four bytes on the wire.
TYPE_BOOL = 8, // bool, varint on the wire.
TYPE_STRING = 9, // UTF-8 text.
TYPE_GROUP = 10, // Tag-delimited message. Deprecated.
TYPE_MESSAGE = 11, // Length-delimited message.
TYPE_BYTES = 12, // Arbitrary byte array.
TYPE_UINT32 = 13, // uint32, varint on the wire
TYPE_ENUM = 14, // Enum, varint on the wire
TYPE_SFIXED32 = 15, // int32, exactly four bytes on the wire
TYPE_SFIXED64 = 16, // int64, exactly eight bytes on the wire
TYPE_SINT32 = 17, // int32, ZigZag-encoded varint on the wire
TYPE_SINT64 = 18, // int64, ZigZag-encoded varint on the wire
MAX_TYPE = 18, // Constant useful for defining lookup tables
// indexed by Type.
};
// Specifies the C++ data type used to represent the field. There is a
// fixed mapping from Type to CppType where each Type maps to exactly one
// CppType. 0 is reserved for errors.
enum CppType {
CPPTYPE_INT32 = 1, // TYPE_INT32, TYPE_SINT32, TYPE_SFIXED32
CPPTYPE_INT64 = 2, // TYPE_INT64, TYPE_SINT64, TYPE_SFIXED64
CPPTYPE_UINT32 = 3, // TYPE_UINT32, TYPE_FIXED32
CPPTYPE_UINT64 = 4, // TYPE_UINT64, TYPE_FIXED64
CPPTYPE_DOUBLE = 5, // TYPE_DOUBLE
CPPTYPE_FLOAT = 6, // TYPE_FLOAT
CPPTYPE_BOOL = 7, // TYPE_BOOL
CPPTYPE_ENUM = 8, // TYPE_ENUM
CPPTYPE_STRING = 9, // TYPE_STRING, TYPE_BYTES
CPPTYPE_MESSAGE = 10, // TYPE_MESSAGE, TYPE_GROUP
MAX_CPPTYPE = 10, // Constant useful for defining lookup tables
// indexed by CppType.
};
// Identifies whether the field is optional, required, or repeated. 0 is
// reserved for errors.
enum Label {
LABEL_OPTIONAL = 1, // optional
LABEL_REQUIRED = 2, // required
LABEL_REPEATED = 3, // repeated
MAX_LABEL = 3, // Constant useful for defining lookup tables
// indexed by Label.
};
// Valid field numbers are positive integers up to kMaxNumber.
static const int kMaxNumber = (1 << 29) - 1;
// First field number reserved for the protocol buffer library implementation.
// Users may not declare fields that use reserved numbers.
static const int kFirstReservedNumber = 19000;
// Last field number reserved for the protocol buffer library implementation.
// Users may not declare fields that use reserved numbers.
static const int kLastReservedNumber = 19999;
const string& name() const; // Name of this field within the message.
const string& full_name() const; // Fully-qualified name of the field.
const FileDescriptor* file() const;// File in which this field was defined.
bool is_extension() const; // Is this an extension field?
int number() const; // Declared tag number.
// Same as name() except converted to lower-case. This (and especially the
// FindFieldByLowercaseName() method) can be useful when parsing formats
// which prefer to use lowercase naming style. (Although, technically
// field names should be lowercased anyway according to the protobuf style
// guide, so this only makes a difference when dealing with old .proto files
// which do not follow the guide.)
const string& lowercase_name() const;
// Same as name() except converted to camel-case. In this conversion, any
// time an underscore appears in the name, it is removed and the next
// letter is capitalized. Furthermore, the first letter of the name is
// lower-cased. Examples:
// FooBar -> fooBar
// foo_bar -> fooBar
// fooBar -> fooBar
// This (and especially the FindFieldByCamelcaseName() method) can be useful
// when parsing formats which prefer to use camel-case naming style.
const string& camelcase_name() const;
Type type() const; // Declared type of this field.
const char* type_name() const; // Name of the declared type.
CppType cpp_type() const; // C++ type of this field.
const char* cpp_type_name() const; // Name of the C++ type.
Label label() const; // optional/required/repeated
bool is_required() const; // shorthand for label() == LABEL_REQUIRED
bool is_optional() const; // shorthand for label() == LABEL_OPTIONAL
bool is_repeated() const; // shorthand for label() == LABEL_REPEATED
bool is_packable() const; // shorthand for is_repeated() &&
// IsTypePackable(type())
bool is_packed() const; // shorthand for is_packable() &&
// options().packed()
// Index of this field within the message's field array, or the file or
// extension scope's extensions array.
int index() const;
// Does this field have an explicitly-declared default value?
bool has_default_value() const;
// Get the field default value if cpp_type() == CPPTYPE_INT32. If no
// explicit default was defined, the default is 0.
int32 default_value_int32() const;
// Get the field default value if cpp_type() == CPPTYPE_INT64. If no
// explicit default was defined, the default is 0.
int64 default_value_int64() const;
// Get the field default value if cpp_type() == CPPTYPE_UINT32. If no
// explicit default was defined, the default is 0.
uint32 default_value_uint32() const;
// Get the field default value if cpp_type() == CPPTYPE_UINT64. If no
// explicit default was defined, the default is 0.
uint64 default_value_uint64() const;
// Get the field default value if cpp_type() == CPPTYPE_FLOAT. If no
// explicit default was defined, the default is 0.0.
float default_value_float() const;
// Get the field default value if cpp_type() == CPPTYPE_DOUBLE. If no
// explicit default was defined, the default is 0.0.
double default_value_double() const;
// Get the field default value if cpp_type() == CPPTYPE_BOOL. If no
// explicit default was defined, the default is false.
bool default_value_bool() const;
// Get the field default value if cpp_type() == CPPTYPE_ENUM. If no
// explicit default was defined, the default is the first value defined
// in the enum type (all enum types are required to have at least one value).
// This never returns NULL.
const EnumValueDescriptor* default_value_enum() const;
// Get the field default value if cpp_type() == CPPTYPE_STRING. If no
// explicit default was defined, the default is the empty string.
const string& default_value_string() const;
// The Descriptor for the message of which this is a field. For extensions,
// this is the extended type. Never NULL.
const Descriptor* containing_type() const;
// An extension may be declared within the scope of another message. If this
// field is an extension (is_extension() is true), then extension_scope()
// returns that message, or NULL if the extension was declared at global
// scope. If this is not an extension, extension_scope() is undefined (may
// assert-fail).
const Descriptor* extension_scope() const;
// If type is TYPE_MESSAGE or TYPE_GROUP, returns a descriptor for the
// message or the group type. Otherwise, undefined.
const Descriptor* message_type() const;
// If type is TYPE_ENUM, returns a descriptor for the enum. Otherwise,
// undefined.
const EnumDescriptor* enum_type() const;
// EXPERIMENTAL; DO NOT USE.
// If this field is a map field, experimental_map_key() is the field
// that is the key for this map.
// experimental_map_key()->containing_type() is the same as message_type().
const FieldDescriptor* experimental_map_key() const;
// Get the FieldOptions for this field. This includes things listed in
// square brackets after the field definition. E.g., the field:
// optional string text = 1 [ctype=CORD];
// has the "ctype" option set. Allowed options are defined by FieldOptions
// in google/protobuf/descriptor.proto, and any available extensions of that
// message.
const FieldOptions& options() const;
// See Descriptor::CopyTo().
void CopyTo(FieldDescriptorProto* proto) const;
// See Descriptor::DebugString().
string DebugString() const;
// Helper method to get the CppType for a particular Type.
static CppType TypeToCppType(Type type);
// Return true iff [packed = true] is valid for fields of this type.
static inline bool IsTypePackable(Type field_type);
// Source Location ---------------------------------------------------
// Updates |*out_location| to the source location of the complete
// extent of this field declaration. Returns false and leaves
// |*out_location| unchanged iff location information was not available.
bool GetSourceLocation(SourceLocation* out_location) const;
private:
typedef FieldOptions OptionsType;
// See Descriptor::DebugString().
void DebugString(int depth, string *contents) const;
// formats the default value appropriately and returns it as a string.
// Must have a default value to call this. If quote_string_type is true, then
// types of CPPTYPE_STRING whill be surrounded by quotes and CEscaped.
string DefaultValueAsString(bool quote_string_type) const;
// Walks up the descriptor tree to generate the source location path
// to this descriptor from the file root.
void GetLocationPath(vector<int>* output) const;
const string* name_;
const string* full_name_;
const string* lowercase_name_;
const string* camelcase_name_;
const FileDescriptor* file_;
int number_;
Type type_;
Label label_;
bool is_extension_;
const Descriptor* containing_type_;
const Descriptor* extension_scope_;
const Descriptor* message_type_;
const EnumDescriptor* enum_type_;
const FieldDescriptor* experimental_map_key_;
const FieldOptions* options_;
// IMPORTANT: If you add a new field, make sure to search for all instances
// of Allocate<FieldDescriptor>() and AllocateArray<FieldDescriptor>() in
// descriptor.cc and update them to initialize the field.
bool has_default_value_;
union {
int32 default_value_int32_;
int64 default_value_int64_;
uint32 default_value_uint32_;
uint64 default_value_uint64_;
float default_value_float_;
double default_value_double_;
bool default_value_bool_;
const EnumValueDescriptor* default_value_enum_;
const string* default_value_string_;
};
static const CppType kTypeToCppTypeMap[MAX_TYPE + 1];
static const char * const kTypeToName[MAX_TYPE + 1];
static const char * const kCppTypeToName[MAX_CPPTYPE + 1];
static const char * const kLabelToName[MAX_LABEL + 1];
// Must be constructed using DescriptorPool.
FieldDescriptor() {}
friend class DescriptorBuilder;
friend class FileDescriptor;
friend class Descriptor;
GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(FieldDescriptor);
};
// Describes an enum type defined in a .proto file. To get the EnumDescriptor
// for a generated enum type, call TypeName_descriptor(). Use DescriptorPool
// to construct your own descriptors.
class LIBPROTOBUF_EXPORT EnumDescriptor {
public:
// The name of this enum type in the containing scope.
const string& name() const;
// The fully-qualified name of the enum type, scope delimited by periods.
const string& full_name() const;
// Index of this enum within the file or containing message's enum array.
int index() const;
// The .proto file in which this enum type was defined. Never NULL.
const FileDescriptor* file() const;
// The number of values for this EnumDescriptor. Guaranteed to be greater
// than zero.
int value_count() const;
// Gets a value by index, where 0 <= index < value_count().
// These are returned in the order they were defined in the .proto file.
const EnumValueDescriptor* value(int index) const;
// Looks up a value by name. Returns NULL if no such value exists.
const EnumValueDescriptor* FindValueByName(const string& name) const;
// Looks up a value by number. Returns NULL if no such value exists. If
// multiple values have this number, the first one defined is returned.
const EnumValueDescriptor* FindValueByNumber(int number) const;
// If this enum type is nested in a message type, this is that message type.
// Otherwise, NULL.
const Descriptor* containing_type() const;
// Get options for this enum type. These are specified in the .proto file by
// placing lines like "option foo = 1234;" in the enum definition. Allowed
// options are defined by EnumOptions in google/protobuf/descriptor.proto,
// and any available extensions of that message.
const EnumOptions& options() const;
// See Descriptor::CopyTo().
void CopyTo(EnumDescriptorProto* proto) const;
// See Descriptor::DebugString().
string DebugString() const;
// Source Location ---------------------------------------------------
// Updates |*out_location| to the source location of the complete
// extent of this enum declaration. Returns false and leaves
// |*out_location| unchanged iff location information was not available.
bool GetSourceLocation(SourceLocation* out_location) const;
private:
typedef EnumOptions OptionsType;
// See Descriptor::DebugString().
void DebugString(int depth, string *contents) const;
// Walks up the descriptor tree to generate the source location path
// to this descriptor from the file root.
void GetLocationPath(vector<int>* output) const;
const string* name_;
const string* full_name_;
const FileDescriptor* file_;
const Descriptor* containing_type_;
const EnumOptions* options_;
// True if this is a placeholder for an unknown type.
bool is_placeholder_;
// True if this is a placeholder and the type name wasn't fully-qualified.
bool is_unqualified_placeholder_;
int value_count_;
EnumValueDescriptor* values_;
// IMPORTANT: If you add a new field, make sure to search for all instances
// of Allocate<EnumDescriptor>() and AllocateArray<EnumDescriptor>() in
// descriptor.cc and update them to initialize the field.
// Must be constructed using DescriptorPool.
EnumDescriptor() {}
friend class DescriptorBuilder;
friend class Descriptor;
friend class FieldDescriptor;
friend class EnumValueDescriptor;
friend class FileDescriptor;
GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(EnumDescriptor);
};
// Describes an individual enum constant of a particular type. To get the
// EnumValueDescriptor for a given enum value, first get the EnumDescriptor
// for its type, then use EnumDescriptor::FindValueByName() or
// EnumDescriptor::FindValueByNumber(). Use DescriptorPool to construct
// your own descriptors.
class LIBPROTOBUF_EXPORT EnumValueDescriptor {
public:
const string& name() const; // Name of this enum constant.
int index() const; // Index within the enums's Descriptor.
int number() const; // Numeric value of this enum constant.
// The full_name of an enum value is a sibling symbol of the enum type.
// e.g. the full name of FieldDescriptorProto::TYPE_INT32 is actually
// "google.protobuf.FieldDescriptorProto.TYPE_INT32", NOT
// "google.protobuf.FieldDescriptorProto.Type.TYPE_INT32". This is to conform
// with C++ scoping rules for enums.
const string& full_name() const;
// The type of this value. Never NULL.
const EnumDescriptor* type() const;
// Get options for this enum value. These are specified in the .proto file
// by adding text like "[foo = 1234]" after an enum value definition.
// Allowed options are defined by EnumValueOptions in
// google/protobuf/descriptor.proto, and any available extensions of that
// message.
const EnumValueOptions& options() const;
// See Descriptor::CopyTo().
void CopyTo(EnumValueDescriptorProto* proto) const;
// See Descriptor::DebugString().
string DebugString() const;
// Source Location ---------------------------------------------------
// Updates |*out_location| to the source location of the complete
// extent of this enum value declaration. Returns false and leaves
// |*out_location| unchanged iff location information was not available.
bool GetSourceLocation(SourceLocation* out_location) const;
private:
typedef EnumValueOptions OptionsType;
// See Descriptor::DebugString().
void DebugString(int depth, string *contents) const;
// Walks up the descriptor tree to generate the source location path
// to this descriptor from the file root.
void GetLocationPath(vector<int>* output) const;
const string* name_;
const string* full_name_;
int number_;
const EnumDescriptor* type_;
const EnumValueOptions* options_;
// IMPORTANT: If you add a new field, make sure to search for all instances
// of Allocate<EnumValueDescriptor>() and AllocateArray<EnumValueDescriptor>()
// in descriptor.cc and update them to initialize the field.
// Must be constructed using DescriptorPool.
EnumValueDescriptor() {}
friend class DescriptorBuilder;
friend class EnumDescriptor;
GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(EnumValueDescriptor);
};
// Describes an RPC service. To get the ServiceDescriptor for a service,
// call Service::GetDescriptor(). Generated service classes also have a
// static method called descriptor() which returns the type's
// ServiceDescriptor. Use DescriptorPool to construct your own descriptors.
class LIBPROTOBUF_EXPORT ServiceDescriptor {
public:
// The name of the service, not including its containing scope.
const string& name() const;
// The fully-qualified name of the service, scope delimited by periods.
const string& full_name() const;
// Index of this service within the file's services array.
int index() const;
// The .proto file in which this service was defined. Never NULL.
const FileDescriptor* file() const;
// Get options for this service type. These are specified in the .proto file
// by placing lines like "option foo = 1234;" in the service definition.
// Allowed options are defined by ServiceOptions in
// google/protobuf/descriptor.proto, and any available extensions of that
// message.
const ServiceOptions& options() const;
// The number of methods this service defines.
int method_count() const;
// Gets a MethodDescriptor by index, where 0 <= index < method_count().
// These are returned in the order they were defined in the .proto file.
const MethodDescriptor* method(int index) const;
// Look up a MethodDescriptor by name.
const MethodDescriptor* FindMethodByName(const string& name) const;
// See Descriptor::CopyTo().
void CopyTo(ServiceDescriptorProto* proto) const;
// See Descriptor::DebugString().
string DebugString() const;
// Source Location ---------------------------------------------------
// Updates |*out_location| to the source location of the complete
// extent of this service declaration. Returns false and leaves
// |*out_location| unchanged iff location information was not available.
bool GetSourceLocation(SourceLocation* out_location) const;
private:
typedef ServiceOptions OptionsType;
// See Descriptor::DebugString().
void DebugString(string *contents) const;
// Walks up the descriptor tree to generate the source location path
// to this descriptor from the file root.
void GetLocationPath(vector<int>* output) const;
const string* name_;
const string* full_name_;
const FileDescriptor* file_;
const ServiceOptions* options_;
int method_count_;
MethodDescriptor* methods_;
// IMPORTANT: If you add a new field, make sure to search for all instances
// of Allocate<ServiceDescriptor>() and AllocateArray<ServiceDescriptor>() in
// descriptor.cc and update them to initialize the field.
// Must be constructed using DescriptorPool.
ServiceDescriptor() {}
friend class DescriptorBuilder;
friend class FileDescriptor;
friend class MethodDescriptor;
GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(ServiceDescriptor);
};
// Describes an individual service method. To obtain a MethodDescriptor given
// a service, first get its ServiceDescriptor, then call
// ServiceDescriptor::FindMethodByName(). Use DescriptorPool to construct your
// own descriptors.
class LIBPROTOBUF_EXPORT MethodDescriptor {
public:
// Name of this method, not including containing scope.
const string& name() const;
// The fully-qualified name of the method, scope delimited by periods.
const string& full_name() const;
// Index within the service's Descriptor.
int index() const;
// Gets the service to which this method belongs. Never NULL.
const ServiceDescriptor* service() const;
// Gets the type of protocol message which this method accepts as input.
const Descriptor* input_type() const;
// Gets the type of protocol message which this message produces as output.
const Descriptor* output_type() const;
// Get options for this method. These are specified in the .proto file by
// placing lines like "option foo = 1234;" in curly-braces after a method
// declaration. Allowed options are defined by MethodOptions in
// google/protobuf/descriptor.proto, and any available extensions of that
// message.
const MethodOptions& options() const;
// See Descriptor::CopyTo().
void CopyTo(MethodDescriptorProto* proto) const;
// See Descriptor::DebugString().
string DebugString() const;
// Source Location ---------------------------------------------------
// Updates |*out_location| to the source location of the complete
// extent of this method declaration. Returns false and leaves
// |*out_location| unchanged iff location information was not available.
bool GetSourceLocation(SourceLocation* out_location) const;
private:
typedef MethodOptions OptionsType;
// See Descriptor::DebugString().
void DebugString(int depth, string *contents) const;
// Walks up the descriptor tree to generate the source location path
// to this descriptor from the file root.
void GetLocationPath(vector<int>* output) const;
const string* name_;
const string* full_name_;
const ServiceDescriptor* service_;
const Descriptor* input_type_;
const Descriptor* output_type_;
const MethodOptions* options_;
// IMPORTANT: If you add a new field, make sure to search for all instances
// of Allocate<MethodDescriptor>() and AllocateArray<MethodDescriptor>() in
// descriptor.cc and update them to initialize the field.
// Must be constructed using DescriptorPool.
MethodDescriptor() {}
friend class DescriptorBuilder;
friend class ServiceDescriptor;
GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(MethodDescriptor);
};
// Describes a whole .proto file. To get the FileDescriptor for a compiled-in
// file, get the descriptor for something defined in that file and call
// descriptor->file(). Use DescriptorPool to construct your own descriptors.
class LIBPROTOBUF_EXPORT FileDescriptor {
public:
// The filename, relative to the source tree.
// e.g. "google/protobuf/descriptor.proto"
const string& name() const;
// The package, e.g. "google.protobuf.compiler".
const string& package() const;
// The DescriptorPool in which this FileDescriptor and all its contents were
// allocated. Never NULL.
const DescriptorPool* pool() const;
// The number of files imported by this one.
int dependency_count() const;
// Gets an imported file by index, where 0 <= index < dependency_count().
// These are returned in the order they were defined in the .proto file.
const FileDescriptor* dependency(int index) const;
// The number of files public imported by this one.
// The public dependency list is a subset of the dependency list.
int public_dependency_count() const;
// Gets a public imported file by index, where 0 <= index <
// public_dependency_count().
// These are returned in the order they were defined in the .proto file.
const FileDescriptor* public_dependency(int index) const;
// The number of files that are imported for weak fields.
// The weak dependency list is a subset of the dependency list.
int weak_dependency_count() const;
// Gets a weak imported file by index, where 0 <= index <
// weak_dependency_count().
// These are returned in the order they were defined in the .proto file.
const FileDescriptor* weak_dependency(int index) const;
// Number of top-level message types defined in this file. (This does not
// include nested types.)
int message_type_count() const;
// Gets a top-level message type, where 0 <= index < message_type_count().
// These are returned in the order they were defined in the .proto file.
const Descriptor* message_type(int index) const;
// Number of top-level enum types defined in this file. (This does not
// include nested types.)
int enum_type_count() const;
// Gets a top-level enum type, where 0 <= index < enum_type_count().
// These are returned in the order they were defined in the .proto file.
const EnumDescriptor* enum_type(int index) const;
// Number of services defined in this file.
int service_count() const;
// Gets a service, where 0 <= index < service_count().
// These are returned in the order they were defined in the .proto file.
const ServiceDescriptor* service(int index) const;
// Number of extensions defined at file scope. (This does not include
// extensions nested within message types.)
int extension_count() const;
// Gets an extension's descriptor, where 0 <= index < extension_count().
// These are returned in the order they were defined in the .proto file.
const FieldDescriptor* extension(int index) const;
// Get options for this file. These are specified in the .proto file by
// placing lines like "option foo = 1234;" at the top level, outside of any
// other definitions. Allowed options are defined by FileOptions in
// google/protobuf/descriptor.proto, and any available extensions of that
// message.
const FileOptions& options() const;
// Find a top-level message type by name. Returns NULL if not found.
const Descriptor* FindMessageTypeByName(const string& name) const;
// Find a top-level enum type by name. Returns NULL if not found.
const EnumDescriptor* FindEnumTypeByName(const string& name) const;
// Find an enum value defined in any top-level enum by name. Returns NULL if
// not found.
const EnumValueDescriptor* FindEnumValueByName(const string& name) const;
// Find a service definition by name. Returns NULL if not found.
const ServiceDescriptor* FindServiceByName(const string& name) const;
// Find a top-level extension definition by name. Returns NULL if not found.
const FieldDescriptor* FindExtensionByName(const string& name) const;
// Similar to FindExtensionByName(), but searches by lowercased-name. See
// Descriptor::FindFieldByLowercaseName().
const FieldDescriptor* FindExtensionByLowercaseName(const string& name) const;
// Similar to FindExtensionByName(), but searches by camelcased-name. See
// Descriptor::FindFieldByCamelcaseName().
const FieldDescriptor* FindExtensionByCamelcaseName(const string& name) const;
// See Descriptor::CopyTo().
// Notes:
// - This method does NOT copy source code information since it is relatively
// large and rarely needed. See CopySourceCodeInfoTo() below.
void CopyTo(FileDescriptorProto* proto) const;
// Write the source code information of this FileDescriptor into the given
// FileDescriptorProto. See CopyTo() above.
void CopySourceCodeInfoTo(FileDescriptorProto* proto) const;
// See Descriptor::DebugString().
string DebugString() const;
private:
// Source Location ---------------------------------------------------
// Updates |*out_location| to the source location of the complete
// extent of the declaration or declaration-part denoted by |path|.
// Returns false and leaves |*out_location| unchanged iff location
// information was not available. (See SourceCodeInfo for
// description of path encoding.)
bool GetSourceLocation(const vector<int>& path,
SourceLocation* out_location) const;
typedef FileOptions OptionsType;
const string* name_;
const string* package_;
const DescriptorPool* pool_;
int dependency_count_;
const FileDescriptor** dependencies_;
int public_dependency_count_;
int* public_dependencies_;
int weak_dependency_count_;
int* weak_dependencies_;
int message_type_count_;
Descriptor* message_types_;
int enum_type_count_;
EnumDescriptor* enum_types_;
int service_count_;
ServiceDescriptor* services_;
int extension_count_;
FieldDescriptor* extensions_;
const FileOptions* options_;
const FileDescriptorTables* tables_;
const SourceCodeInfo* source_code_info_;
// IMPORTANT: If you add a new field, make sure to search for all instances
// of Allocate<FileDescriptor>() and AllocateArray<FileDescriptor>() in
// descriptor.cc and update them to initialize the field.
FileDescriptor() {}
friend class DescriptorBuilder;
friend class Descriptor;
friend class FieldDescriptor;
friend class EnumDescriptor;
friend class EnumValueDescriptor;
friend class MethodDescriptor;
friend class ServiceDescriptor;
GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(FileDescriptor);
};
// ===================================================================
// Used to construct descriptors.
//
// Normally you won't want to build your own descriptors. Message classes
// constructed by the protocol compiler will provide them for you. However,
// if you are implementing Message on your own, or if you are writing a
// program which can operate on totally arbitrary types and needs to load
// them from some sort of database, you might need to.
//
// Since Descriptors are composed of a whole lot of cross-linked bits of
// data that would be a pain to put together manually, the
// DescriptorPool class is provided to make the process easier. It can
// take a FileDescriptorProto (defined in descriptor.proto), validate it,
// and convert it to a set of nicely cross-linked Descriptors.
//
// DescriptorPool also helps with memory management. Descriptors are
// composed of many objects containing static data and pointers to each
// other. In all likelihood, when it comes time to delete this data,
// you'll want to delete it all at once. In fact, it is not uncommon to
// have a whole pool of descriptors all cross-linked with each other which
// you wish to delete all at once. This class represents such a pool, and
// handles the memory management for you.
//
// You can also search for descriptors within a DescriptorPool by name, and
// extensions by number.
class LIBPROTOBUF_EXPORT DescriptorPool {
public:
// Create a normal, empty DescriptorPool.
DescriptorPool();
// Constructs a DescriptorPool that, when it can't find something among the
// descriptors already in the pool, looks for it in the given
// DescriptorDatabase.
// Notes:
// - If a DescriptorPool is constructed this way, its BuildFile*() methods
// must not be called (they will assert-fail). The only way to populate
// the pool with descriptors is to call the Find*By*() methods.
// - The Find*By*() methods may block the calling thread if the
// DescriptorDatabase blocks. This in turn means that parsing messages
// may block if they need to look up extensions.
// - The Find*By*() methods will use mutexes for thread-safety, thus making
// them slower even when they don't have to fall back to the database.
// In fact, even the Find*By*() methods of descriptor objects owned by
// this pool will be slower, since they will have to obtain locks too.
// - An ErrorCollector may optionally be given to collect validation errors
// in files loaded from the database. If not given, errors will be printed
// to GOOGLE_LOG(ERROR). Remember that files are built on-demand, so this
// ErrorCollector may be called from any thread that calls one of the
// Find*By*() methods.
class ErrorCollector;
explicit DescriptorPool(DescriptorDatabase* fallback_database,
ErrorCollector* error_collector = NULL);
~DescriptorPool();
// Get a pointer to the generated pool. Generated protocol message classes
// which are compiled into the binary will allocate their descriptors in
// this pool. Do not add your own descriptors to this pool.
static const DescriptorPool* generated_pool();
// Find a FileDescriptor in the pool by file name. Returns NULL if not
// found.
const FileDescriptor* FindFileByName(const string& name) const;
// Find the FileDescriptor in the pool which defines the given symbol.
// If any of the Find*ByName() methods below would succeed, then this is
// equivalent to calling that method and calling the result's file() method.
// Otherwise this returns NULL.
const FileDescriptor* FindFileContainingSymbol(
const string& symbol_name) const;
// Looking up descriptors ------------------------------------------
// These find descriptors by fully-qualified name. These will find both
// top-level descriptors and nested descriptors. They return NULL if not
// found.
const Descriptor* FindMessageTypeByName(const string& name) const;
const FieldDescriptor* FindFieldByName(const string& name) const;
const FieldDescriptor* FindExtensionByName(const string& name) const;
const EnumDescriptor* FindEnumTypeByName(const string& name) const;
const EnumValueDescriptor* FindEnumValueByName(const string& name) const;
const ServiceDescriptor* FindServiceByName(const string& name) const;
const MethodDescriptor* FindMethodByName(const string& name) const;
// Finds an extension of the given type by number. The extendee must be
// a member of this DescriptorPool or one of its underlays.
const FieldDescriptor* FindExtensionByNumber(const Descriptor* extendee,
int number) const;
// Finds extensions of extendee. The extensions will be appended to
// out in an undefined order. Only extensions defined directly in
// this DescriptorPool or one of its underlays are guaranteed to be
// found: extensions defined in the fallback database might not be found
// depending on the database implementation.
void FindAllExtensions(const Descriptor* extendee,
vector<const FieldDescriptor*>* out) const;
// Building descriptors --------------------------------------------
// When converting a FileDescriptorProto to a FileDescriptor, various
// errors might be detected in the input. The caller may handle these
// programmatically by implementing an ErrorCollector.
class LIBPROTOBUF_EXPORT ErrorCollector {
public:
inline ErrorCollector() {}
virtual ~ErrorCollector();
// These constants specify what exact part of the construct is broken.
// This is useful e.g. for mapping the error back to an exact location
// in a .proto file.
enum ErrorLocation {
NAME, // the symbol name, or the package name for files
NUMBER, // field or extension range number
TYPE, // field type
EXTENDEE, // field extendee
DEFAULT_VALUE, // field default value
INPUT_TYPE, // method input type
OUTPUT_TYPE, // method output type
OPTION_NAME, // name in assignment
OPTION_VALUE, // value in option assignment
OTHER // some other problem
};
// Reports an error in the FileDescriptorProto.
virtual void AddError(
const string& filename, // File name in which the error occurred.
const string& element_name, // Full name of the erroneous element.
const Message* descriptor, // Descriptor of the erroneous element.
ErrorLocation location, // One of the location constants, above.
const string& message // Human-readable error message.
) = 0;
private:
GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(ErrorCollector);
};
// Convert the FileDescriptorProto to real descriptors and place them in
// this DescriptorPool. All dependencies of the file must already be in
// the pool. Returns the resulting FileDescriptor, or NULL if there were
// problems with the input (e.g. the message was invalid, or dependencies
// were missing). Details about the errors are written to GOOGLE_LOG(ERROR).
const FileDescriptor* BuildFile(const FileDescriptorProto& proto);
// Same as BuildFile() except errors are sent to the given ErrorCollector.
const FileDescriptor* BuildFileCollectingErrors(
const FileDescriptorProto& proto,
ErrorCollector* error_collector);
// By default, it is an error if a FileDescriptorProto contains references
// to types or other files that are not found in the DescriptorPool (or its
// backing DescriptorDatabase, if any). If you call
// AllowUnknownDependencies(), however, then unknown types and files
// will be replaced by placeholder descriptors. This can allow you to
// perform some useful operations with a .proto file even if you do not
// have access to other .proto files on which it depends. However, some
// heuristics must be used to fill in the gaps in information, and these
// can lead to descriptors which are inaccurate. For example, the
// DescriptorPool may be forced to guess whether an unknown type is a message
// or an enum, as well as what package it resides in. Furthermore,
// placeholder types will not be discoverable via FindMessageTypeByName()
// and similar methods, which could confuse some descriptor-based algorithms.
// Generally, the results of this option should only be relied upon for
// debugging purposes.
void AllowUnknownDependencies() { allow_unknown_ = true; }
// Internal stuff --------------------------------------------------
// These methods MUST NOT be called from outside the proto2 library.
// These methods may contain hidden pitfalls and may be removed in a
// future library version.
// Create a DescriptorPool which is overlaid on top of some other pool.
// If you search for a descriptor in the overlay and it is not found, the
// underlay will be searched as a backup. If the underlay has its own
// underlay, that will be searched next, and so on. This also means that
// files built in the overlay will be cross-linked with the underlay's
// descriptors if necessary. The underlay remains property of the caller;
// it must remain valid for the lifetime of the newly-constructed pool.
//
// Example: Say you want to parse a .proto file at runtime in order to use
// its type with a DynamicMessage. Say this .proto file has dependencies,
// but you know that all the dependencies will be things that are already
// compiled into the binary. For ease of use, you'd like to load the types
// right out of generated_pool() rather than have to parse redundant copies
// of all these .protos and runtime. But, you don't want to add the parsed
// types directly into generated_pool(): this is not allowed, and would be
// bad design anyway. So, instead, you could use generated_pool() as an
// underlay for a new DescriptorPool in which you add only the new file.
//
// WARNING: Use of underlays can lead to many subtle gotchas. Instead,
// try to formulate what you want to do in terms of DescriptorDatabases.
explicit DescriptorPool(const DescriptorPool* underlay);
// Called by generated classes at init time to add their descriptors to
// generated_pool. Do NOT call this in your own code! filename must be a
// permanent string (e.g. a string literal).
static void InternalAddGeneratedFile(
const void* encoded_file_descriptor, int size);
// For internal use only: Gets a non-const pointer to the generated pool.
// This is called at static-initialization time only, so thread-safety is
// not a concern. If both an underlay and a fallback database are present,
// the underlay takes precedence.
static DescriptorPool* internal_generated_pool();
// For internal use only: Changes the behavior of BuildFile() such that it
// allows the file to make reference to message types declared in other files
// which it did not officially declare as dependencies.
void InternalDontEnforceDependencies();
// For internal use only.
void internal_set_underlay(const DescriptorPool* underlay) {
underlay_ = underlay;
}
// For internal (unit test) use only: Returns true if a FileDescriptor has
// been constructed for the given file, false otherwise. Useful for testing
// lazy descriptor initialization behavior.
bool InternalIsFileLoaded(const string& filename) const;
private:
friend class Descriptor;
friend class FieldDescriptor;
friend class EnumDescriptor;
friend class ServiceDescriptor;
friend class FileDescriptor;
friend class DescriptorBuilder;
// Return true if the given name is a sub-symbol of any non-package
// descriptor that already exists in the descriptor pool. (The full
// definition of such types is already known.)
bool IsSubSymbolOfBuiltType(const string& name) const;
// Tries to find something in the fallback database and link in the
// corresponding proto file. Returns true if successful, in which case
// the caller should search for the thing again. These are declared
// const because they are called by (semantically) const methods.
bool TryFindFileInFallbackDatabase(const string& name) const;
bool TryFindSymbolInFallbackDatabase(const string& name) const;
bool TryFindExtensionInFallbackDatabase(const Descriptor* containing_type,
int field_number) const;
// Like BuildFile() but called internally when the file has been loaded from
// fallback_database_. Declared const because it is called by (semantically)
// const methods.
const FileDescriptor* BuildFileFromDatabase(
const FileDescriptorProto& proto) const;
// If fallback_database_ is NULL, this is NULL. Otherwise, this is a mutex
// which must be locked while accessing tables_.
Mutex* mutex_;
// See constructor.
DescriptorDatabase* fallback_database_;
ErrorCollector* default_error_collector_;
const DescriptorPool* underlay_;
// This class contains a lot of hash maps with complicated types that
// we'd like to keep out of the header.
class Tables;
scoped_ptr<Tables> tables_;
bool enforce_dependencies_;
bool allow_unknown_;
GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(DescriptorPool);
};
// inline methods ====================================================
// These macros makes this repetitive code more readable.
#define PROTOBUF_DEFINE_ACCESSOR(CLASS, FIELD, TYPE) \
inline TYPE CLASS::FIELD() const { return FIELD##_; }
// Strings fields are stored as pointers but returned as const references.
#define PROTOBUF_DEFINE_STRING_ACCESSOR(CLASS, FIELD) \
inline const string& CLASS::FIELD() const { return *FIELD##_; }
// Arrays take an index parameter, obviously.
#define PROTOBUF_DEFINE_ARRAY_ACCESSOR(CLASS, FIELD, TYPE) \
inline TYPE CLASS::FIELD(int index) const { return FIELD##s_ + index; }
#define PROTOBUF_DEFINE_OPTIONS_ACCESSOR(CLASS, TYPE) \
inline const TYPE& CLASS::options() const { return *options_; }
PROTOBUF_DEFINE_STRING_ACCESSOR(Descriptor, name)
PROTOBUF_DEFINE_STRING_ACCESSOR(Descriptor, full_name)
PROTOBUF_DEFINE_ACCESSOR(Descriptor, file, const FileDescriptor*)
PROTOBUF_DEFINE_ACCESSOR(Descriptor, containing_type, const Descriptor*)
PROTOBUF_DEFINE_ACCESSOR(Descriptor, field_count, int)
PROTOBUF_DEFINE_ACCESSOR(Descriptor, nested_type_count, int)
PROTOBUF_DEFINE_ACCESSOR(Descriptor, enum_type_count, int)
PROTOBUF_DEFINE_ARRAY_ACCESSOR(Descriptor, field, const FieldDescriptor*)
PROTOBUF_DEFINE_ARRAY_ACCESSOR(Descriptor, nested_type, const Descriptor*)
PROTOBUF_DEFINE_ARRAY_ACCESSOR(Descriptor, enum_type, const EnumDescriptor*)
PROTOBUF_DEFINE_ACCESSOR(Descriptor, extension_range_count, int)
PROTOBUF_DEFINE_ACCESSOR(Descriptor, extension_count, int)
PROTOBUF_DEFINE_ARRAY_ACCESSOR(Descriptor, extension_range,
const Descriptor::ExtensionRange*)
PROTOBUF_DEFINE_ARRAY_ACCESSOR(Descriptor, extension,
const FieldDescriptor*)
PROTOBUF_DEFINE_OPTIONS_ACCESSOR(Descriptor, MessageOptions)
PROTOBUF_DEFINE_STRING_ACCESSOR(FieldDescriptor, name)
PROTOBUF_DEFINE_STRING_ACCESSOR(FieldDescriptor, full_name)
PROTOBUF_DEFINE_STRING_ACCESSOR(FieldDescriptor, lowercase_name)
PROTOBUF_DEFINE_STRING_ACCESSOR(FieldDescriptor, camelcase_name)
PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, file, const FileDescriptor*)
PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, number, int)
PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, is_extension, bool)
PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, type, FieldDescriptor::Type)
PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, label, FieldDescriptor::Label)
PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, containing_type, const Descriptor*)
PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, extension_scope, const Descriptor*)
PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, message_type, const Descriptor*)
PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, enum_type, const EnumDescriptor*)
PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, experimental_map_key,
const FieldDescriptor*)
PROTOBUF_DEFINE_OPTIONS_ACCESSOR(FieldDescriptor, FieldOptions)
PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, has_default_value, bool)
PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, default_value_int32 , int32 )
PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, default_value_int64 , int64 )
PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, default_value_uint32, uint32)
PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, default_value_uint64, uint64)
PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, default_value_float , float )
PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, default_value_double, double)
PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, default_value_bool , bool )
PROTOBUF_DEFINE_ACCESSOR(FieldDescriptor, default_value_enum,
const EnumValueDescriptor*)
PROTOBUF_DEFINE_STRING_ACCESSOR(FieldDescriptor, default_value_string)
PROTOBUF_DEFINE_STRING_ACCESSOR(EnumDescriptor, name)
PROTOBUF_DEFINE_STRING_ACCESSOR(EnumDescriptor, full_name)
PROTOBUF_DEFINE_ACCESSOR(EnumDescriptor, file, const FileDescriptor*)
PROTOBUF_DEFINE_ACCESSOR(EnumDescriptor, containing_type, const Descriptor*)
PROTOBUF_DEFINE_ACCESSOR(EnumDescriptor, value_count, int)
PROTOBUF_DEFINE_ARRAY_ACCESSOR(EnumDescriptor, value,
const EnumValueDescriptor*)
PROTOBUF_DEFINE_OPTIONS_ACCESSOR(EnumDescriptor, EnumOptions)
PROTOBUF_DEFINE_STRING_ACCESSOR(EnumValueDescriptor, name)
PROTOBUF_DEFINE_STRING_ACCESSOR(EnumValueDescriptor, full_name)
PROTOBUF_DEFINE_ACCESSOR(EnumValueDescriptor, number, int)
PROTOBUF_DEFINE_ACCESSOR(EnumValueDescriptor, type, const EnumDescriptor*)
PROTOBUF_DEFINE_OPTIONS_ACCESSOR(EnumValueDescriptor, EnumValueOptions)
PROTOBUF_DEFINE_STRING_ACCESSOR(ServiceDescriptor, name)
PROTOBUF_DEFINE_STRING_ACCESSOR(ServiceDescriptor, full_name)
PROTOBUF_DEFINE_ACCESSOR(ServiceDescriptor, file, const FileDescriptor*)
PROTOBUF_DEFINE_ACCESSOR(ServiceDescriptor, method_count, int)
PROTOBUF_DEFINE_ARRAY_ACCESSOR(ServiceDescriptor, method,
const MethodDescriptor*)
PROTOBUF_DEFINE_OPTIONS_ACCESSOR(ServiceDescriptor, ServiceOptions)
PROTOBUF_DEFINE_STRING_ACCESSOR(MethodDescriptor, name)
PROTOBUF_DEFINE_STRING_ACCESSOR(MethodDescriptor, full_name)
PROTOBUF_DEFINE_ACCESSOR(MethodDescriptor, service, const ServiceDescriptor*)
PROTOBUF_DEFINE_ACCESSOR(MethodDescriptor, input_type, const Descriptor*)
PROTOBUF_DEFINE_ACCESSOR(MethodDescriptor, output_type, const Descriptor*)
PROTOBUF_DEFINE_OPTIONS_ACCESSOR(MethodDescriptor, MethodOptions)
PROTOBUF_DEFINE_STRING_ACCESSOR(FileDescriptor, name)
PROTOBUF_DEFINE_STRING_ACCESSOR(FileDescriptor, package)
PROTOBUF_DEFINE_ACCESSOR(FileDescriptor, pool, const DescriptorPool*)
PROTOBUF_DEFINE_ACCESSOR(FileDescriptor, dependency_count, int)
PROTOBUF_DEFINE_ACCESSOR(FileDescriptor, public_dependency_count, int)
PROTOBUF_DEFINE_ACCESSOR(FileDescriptor, weak_dependency_count, int)
PROTOBUF_DEFINE_ACCESSOR(FileDescriptor, message_type_count, int)
PROTOBUF_DEFINE_ACCESSOR(FileDescriptor, enum_type_count, int)
PROTOBUF_DEFINE_ACCESSOR(FileDescriptor, service_count, int)
PROTOBUF_DEFINE_ACCESSOR(FileDescriptor, extension_count, int)
PROTOBUF_DEFINE_OPTIONS_ACCESSOR(FileDescriptor, FileOptions)
PROTOBUF_DEFINE_ARRAY_ACCESSOR(FileDescriptor, message_type, const Descriptor*)
PROTOBUF_DEFINE_ARRAY_ACCESSOR(FileDescriptor, enum_type, const EnumDescriptor*)
PROTOBUF_DEFINE_ARRAY_ACCESSOR(FileDescriptor, service,
const ServiceDescriptor*)
PROTOBUF_DEFINE_ARRAY_ACCESSOR(FileDescriptor, extension,
const FieldDescriptor*)
#undef PROTOBUF_DEFINE_ACCESSOR
#undef PROTOBUF_DEFINE_STRING_ACCESSOR
#undef PROTOBUF_DEFINE_ARRAY_ACCESSOR
// A few accessors differ from the macros...
inline bool FieldDescriptor::is_required() const {
return label() == LABEL_REQUIRED;
}
inline bool FieldDescriptor::is_optional() const {
return label() == LABEL_OPTIONAL;
}
inline bool FieldDescriptor::is_repeated() const {
return label() == LABEL_REPEATED;
}
inline bool FieldDescriptor::is_packable() const {
return is_repeated() && IsTypePackable(type());
}
// To save space, index() is computed by looking at the descriptor's position
// in the parent's array of children.
inline int FieldDescriptor::index() const {
if (!is_extension_) {
return this - containing_type_->fields_;
} else if (extension_scope_ != NULL) {
return this - extension_scope_->extensions_;
} else {
return this - file_->extensions_;
}
}
inline int Descriptor::index() const {
if (containing_type_ == NULL) {
return this - file_->message_types_;
} else {
return this - containing_type_->nested_types_;
}
}
inline int EnumDescriptor::index() const {
if (containing_type_ == NULL) {
return this - file_->enum_types_;
} else {
return this - containing_type_->enum_types_;
}
}
inline int EnumValueDescriptor::index() const {
return this - type_->values_;
}
inline int ServiceDescriptor::index() const {
return this - file_->services_;
}
inline int MethodDescriptor::index() const {
return this - service_->methods_;
}
inline const char* FieldDescriptor::type_name() const {
return kTypeToName[type_];
}
inline FieldDescriptor::CppType FieldDescriptor::cpp_type() const {
return kTypeToCppTypeMap[type_];
}
inline const char* FieldDescriptor::cpp_type_name() const {
return kCppTypeToName[kTypeToCppTypeMap[type_]];
}
inline FieldDescriptor::CppType FieldDescriptor::TypeToCppType(Type type) {
return kTypeToCppTypeMap[type];
}
inline bool FieldDescriptor::IsTypePackable(Type field_type) {
return (field_type != FieldDescriptor::TYPE_STRING &&
field_type != FieldDescriptor::TYPE_GROUP &&
field_type != FieldDescriptor::TYPE_MESSAGE &&
field_type != FieldDescriptor::TYPE_BYTES);
}
inline const FileDescriptor* FileDescriptor::dependency(int index) const {
return dependencies_[index];
}
inline const FileDescriptor* FileDescriptor::public_dependency(
int index) const {
return dependencies_[public_dependencies_[index]];
}
inline const FileDescriptor* FileDescriptor::weak_dependency(
int index) const {
return dependencies_[weak_dependencies_[index]];
}
} // namespace protobuf
} // namespace google
#endif // GOOGLE_PROTOBUF_DESCRIPTOR_H__