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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.//// The messages in this file describe the definitions found in .proto files.// A valid .proto file can be translated directly to a FileDescriptorProto// without any other information (e.g. without reading its imports).syntax = "proto2";package google.protobuf;option go_package = "descriptor";option java_package = "com.google.protobuf";option java_outer_classname = "DescriptorProtos";option csharp_namespace = "Google.Protobuf.Reflection";option objc_class_prefix = "GPB";// descriptor.proto must be optimized for speed because reflection-based// algorithms don't work during bootstrapping.option optimize_for = SPEED;// The protocol compiler can output a FileDescriptorSet containing the .proto// files it parses.message FileDescriptorSet { repeated FileDescriptorProto file = 1;}// Describes a complete .proto file.message FileDescriptorProto { optional string name = 1; // file name, relative to root of source tree optional string package = 2; // e.g. "foo", "foo.bar", etc. // Names of files imported by this file. repeated string dependency = 3; // Indexes of the public imported files in the dependency list above. repeated int32 public_dependency = 10; // Indexes of the weak imported files in the dependency list. // For Google-internal migration only. Do not use. repeated int32 weak_dependency = 11; // All top-level definitions in this file. repeated DescriptorProto message_type = 4; repeated EnumDescriptorProto enum_type = 5; repeated ServiceDescriptorProto service = 6; repeated FieldDescriptorProto extension = 7; optional FileOptions options = 8; // This field contains optional information about the original source code. // You may safely remove this entire field without harming runtime // functionality of the descriptors -- the information is needed only by // development tools. optional SourceCodeInfo source_code_info = 9; // The syntax of the proto file. // The supported values are "proto2" and "proto3". optional string syntax = 12;}// Describes a message type.message DescriptorProto { optional string name = 1; repeated FieldDescriptorProto field = 2; repeated FieldDescriptorProto extension = 6; repeated DescriptorProto nested_type = 3; repeated EnumDescriptorProto enum_type = 4; message ExtensionRange { optional int32 start = 1; optional int32 end = 2; } repeated ExtensionRange extension_range = 5; repeated OneofDescriptorProto oneof_decl = 8; optional MessageOptions options = 7; // Range of reserved tag numbers. Reserved tag numbers may not be used by // fields or extension ranges in the same message. Reserved ranges may // not overlap. message ReservedRange { optional int32 start = 1; // Inclusive. optional int32 end = 2; // Exclusive. } repeated ReservedRange reserved_range = 9; // Reserved field names, which may not be used by fields in the same message. // A given name may only be reserved once. repeated string reserved_name = 10;}// Describes a field within a message.message FieldDescriptorProto { enum Type { // 0 is reserved for errors. // Order is weird for historical reasons. TYPE_DOUBLE = 1; TYPE_FLOAT = 2; // Not ZigZag encoded. Negative numbers take 10 bytes. Use TYPE_SINT64 if // negative values are likely. TYPE_INT64 = 3; TYPE_UINT64 = 4; // Not ZigZag encoded. Negative numbers take 10 bytes. Use TYPE_SINT32 if // negative values are likely. TYPE_INT32 = 5; TYPE_FIXED64 = 6; TYPE_FIXED32 = 7; TYPE_BOOL = 8; TYPE_STRING = 9; TYPE_GROUP = 10; // Tag-delimited aggregate. TYPE_MESSAGE = 11; // Length-delimited aggregate. // New in version 2. TYPE_BYTES = 12; TYPE_UINT32 = 13; TYPE_ENUM = 14; TYPE_SFIXED32 = 15; TYPE_SFIXED64 = 16; TYPE_SINT32 = 17; // Uses ZigZag encoding. TYPE_SINT64 = 18; // Uses ZigZag encoding. }; enum Label { // 0 is reserved for errors LABEL_OPTIONAL = 1; LABEL_REQUIRED = 2; LABEL_REPEATED = 3; // TODO(sanjay): Should we add LABEL_MAP? }; optional string name = 1; optional int32 number = 3; optional Label label = 4; // If type_name is set, this need not be set. If both this and type_name // are set, this must be one of TYPE_ENUM, TYPE_MESSAGE or TYPE_GROUP. optional Type type = 5; // For message and enum types, this is the name of the type. If the name // starts with a '.', it is fully-qualified. Otherwise, C++-like scoping // rules are used to find the type (i.e. first the nested types within this // message are searched, then within the parent, on up to the root // namespace). optional string type_name = 6; // For extensions, this is the name of the type being extended. It is // resolved in the same manner as type_name. optional string extendee = 2; // For numeric types, contains the original text representation of the value. // For booleans, "true" or "false". // For strings, contains the default text contents (not escaped in any way). // For bytes, contains the C escaped value. All bytes >= 128 are escaped. // TODO(kenton): Base-64 encode? optional string default_value = 7; // If set, gives the index of a oneof in the containing type's oneof_decl // list. This field is a member of that oneof. optional int32 oneof_index = 9; // JSON name of this field. The value is set by protocol compiler. If the // user has set a "json_name" option on this field, that option's value // will be used. Otherwise, it's deduced from the field's name by converting // it to camelCase. optional string json_name = 10; optional FieldOptions options = 8;}// Describes a oneof.message OneofDescriptorProto { optional string name = 1; optional OneofOptions options = 2;}// Describes an enum type.message EnumDescriptorProto { optional string name = 1; repeated EnumValueDescriptorProto value = 2; optional EnumOptions options = 3;}// Describes a value within an enum.message EnumValueDescriptorProto { optional string name = 1; optional int32 number = 2; optional EnumValueOptions options = 3;}// Describes a service.message ServiceDescriptorProto { optional string name = 1; repeated MethodDescriptorProto method = 2; optional ServiceOptions options = 3;}// Describes a method of a service.message MethodDescriptorProto { optional string name = 1; // Input and output type names. These are resolved in the same way as // FieldDescriptorProto.type_name, but must refer to a message type. optional string input_type = 2; optional string output_type = 3; optional MethodOptions options = 4; // Identifies if client streams multiple client messages optional bool client_streaming = 5 [default=false]; // Identifies if server streams multiple server messages optional bool server_streaming = 6 [default=false];}// ===================================================================// Options// Each of the definitions above may have "options" attached. These are// just annotations which may cause code to be generated slightly differently// or may contain hints for code that manipulates protocol messages.//// Clients may define custom options as extensions of the *Options messages.// These extensions may not yet be known at parsing time, so the parser cannot// store the values in them. Instead it stores them in a field in the *Options// message called uninterpreted_option. This field must have the same name// across all *Options messages. We then use this field to populate the// extensions when we build a descriptor, at which point all protos have been// parsed and so all extensions are known.//// Extension numbers for custom options may be chosen as follows:// * For options which will only be used within a single application or// organization, or for experimental options, use field numbers 50000// through 99999. It is up to you to ensure that you do not use the// same number for multiple options.// * For options which will be published and used publicly by multiple// independent entities, e-mail protobuf-global-extension-registry@google.com// to reserve extension numbers. Simply provide your project name (e.g.// Objective-C plugin) and your project website (if available) -- there's no// need to explain how you intend to use them. Usually you only need one// extension number. You can declare multiple options with only one extension// number by putting them in a sub-message. See the Custom Options section of// the docs for examples:// https://developers.google.com/protocol-buffers/docs/proto#options// If this turns out to be popular, a web service will be set up// to automatically assign option numbers.message FileOptions { // Sets the Java package where classes generated from this .proto will be // placed. By default, the proto package is used, but this is often // inappropriate because proto packages do not normally start with backwards // domain names. optional string java_package = 1; // If set, all the classes from the .proto file are wrapped in a single // outer class with the given name. This applies to both Proto1 // (equivalent to the old "--one_java_file" option) and Proto2 (where // a .proto always translates to a single class, but you may want to // explicitly choose the class name). optional string java_outer_classname = 8; // If set true, then the Java code generator will generate a separate .java // file for each top-level message, enum, and service defined in the .proto // file. Thus, these types will *not* be nested inside the outer class // named by java_outer_classname. However, the outer class will still be // generated to contain the file's getDescriptor() method as well as any // top-level extensions defined in the file. optional bool java_multiple_files = 10 [default=false]; // This option does nothing. optional bool java_generate_equals_and_hash = 20 [deprecated=true]; // If set true, then the Java2 code generator will generate code that // throws an exception whenever an attempt is made to assign a non-UTF-8 // byte sequence to a string field. // Message reflection will do the same. // However, an extension field still accepts non-UTF-8 byte sequences. // This option has no effect on when used with the lite runtime. optional bool java_string_check_utf8 = 27 [default=false]; // Generated classes can be optimized for speed or code size. enum OptimizeMode { SPEED = 1; // Generate complete code for parsing, serialization, // etc. CODE_SIZE = 2; // Use ReflectionOps to implement these methods. LITE_RUNTIME = 3; // Generate code using MessageLite and the lite runtime. } optional OptimizeMode optimize_for = 9 [default=SPEED]; // Sets the Go package where structs generated from this .proto will be // placed. If omitted, the Go package will be derived from the following: // - The basename of the package import path, if provided. // - Otherwise, the package statement in the .proto file, if present. // - Otherwise, the basename of the .proto file, without extension. optional string go_package = 11; // Should generic services be generated in each language? "Generic" services // are not specific to any particular RPC system. They are generated by the // main code generators in each language (without additional plugins). // Generic services were the only kind of service generation supported by // early versions of google.protobuf. // // Generic services are now considered deprecated in favor of using plugins // that generate code specific to your particular RPC system. Therefore, // these default to false. Old code which depends on generic services should // explicitly set them to true. optional bool cc_generic_services = 16 [default=false]; optional bool java_generic_services = 17 [default=false]; optional bool py_generic_services = 18 [default=false]; // Is this file deprecated? // Depending on the target platform, this can emit Deprecated annotations // for everything in the file, or it will be completely ignored; in the very // least, this is a formalization for deprecating files. optional bool deprecated = 23 [default=false]; // Enables the use of arenas for the proto messages in this file. This applies // only to generated classes for C++. optional bool cc_enable_arenas = 31 [default=false]; // Sets the objective c class prefix which is prepended to all objective c // generated classes from this .proto. There is no default. optional string objc_class_prefix = 36; // Namespace for generated classes; defaults to the package. optional string csharp_namespace = 37; // The parser stores options it doesn't recognize here. See above. repeated UninterpretedOption uninterpreted_option = 999; // Clients can define custom options in extensions of this message. See above. extensions 1000 to max; reserved 38;}message MessageOptions { // Set true to use the old proto1 MessageSet wire format for extensions. // This is provided for backwards-compatibility with the MessageSet wire // format. You should not use this for any other reason: It's less // efficient, has fewer features, and is more complicated. // // The message must be defined exactly as follows: // message Foo { // option message_set_wire_format = true; // extensions 4 to max; // } // Note that the message cannot have any defined fields; MessageSets only // have extensions. // // All extensions of your type must be singular messages; e.g. they cannot // be int32s, enums, or repeated messages. // // Because this is an option, the above two restrictions are not enforced by // the protocol compiler. optional bool message_set_wire_format = 1 [default=false]; // Disables the generation of the standard "descriptor()" accessor, which can // conflict with a field of the same name. This is meant to make migration // from proto1 easier; new code should avoid fields named "descriptor". optional bool no_standard_descriptor_accessor = 2 [default=false]; // Is this message deprecated? // Depending on the target platform, this can emit Deprecated annotations // for the message, or it will be completely ignored; in the very least, // this is a formalization for deprecating messages. optional bool deprecated = 3 [default=false]; // Whether the message is an automatically generated map entry type for the // maps field. // // For maps fields: // map<KeyType, ValueType> map_field = 1; // The parsed descriptor looks like: // message MapFieldEntry { // option map_entry = true; // optional KeyType key = 1; // optional ValueType value = 2; // } // repeated MapFieldEntry map_field = 1; // // Implementations may choose not to generate the map_entry=true message, but // use a native map in the target language to hold the keys and values. // The reflection APIs in such implementions still need to work as // if the field is a repeated message field. // // NOTE: Do not set the option in .proto files. Always use the maps syntax // instead. The option should only be implicitly set by the proto compiler // parser. optional bool map_entry = 7; // The parser stores options it doesn't recognize here. See above. repeated UninterpretedOption uninterpreted_option = 999; // Clients can define custom options in extensions of this message. See above. extensions 1000 to max; reserved 8; // javalite_serializable}message FieldOptions { // The ctype option instructs the C++ code generator to use a different // representation of the field than it normally would. See the specific // options below. This option is not yet implemented in the open source // release -- sorry, we'll try to include it in a future version! optional CType ctype = 1 [default = STRING]; enum CType { // Default mode. STRING = 0; CORD = 1; STRING_PIECE = 2; } // The packed option can be enabled for repeated primitive fields to enable // a more efficient representation on the wire. Rather than repeatedly // writing the tag and type for each element, the entire array is encoded as // a single length-delimited blob. In proto3, only explicit setting it to // false will avoid using packed encoding. optional bool packed = 2; // The jstype option determines the JavaScript type used for values of the // field. The option is permitted only for 64 bit integral and fixed types // (int64, uint64, sint64, fixed64, sfixed64). By default these types are // represented as JavaScript strings. This avoids loss of precision that can // happen when a large value is converted to a floating point JavaScript // numbers. Specifying JS_NUMBER for the jstype causes the generated // JavaScript code to use the JavaScript "number" type instead of strings. // This option is an enum to permit additional types to be added, // e.g. goog.math.Integer. optional JSType jstype = 6 [default = JS_NORMAL]; enum JSType { // Use the default type. JS_NORMAL = 0; // Use JavaScript strings. JS_STRING = 1; // Use JavaScript numbers. JS_NUMBER = 2; } // Should this field be parsed lazily? Lazy applies only to message-type // fields. It means that when the outer message is initially parsed, the // inner message's contents will not be parsed but instead stored in encoded // form. The inner message will actually be parsed when it is first accessed. // // This is only a hint. Implementations are free to choose whether to use // eager or lazy parsing regardless of the value of this option. However, // setting this option true suggests that the protocol author believes that // using lazy parsing on this field is worth the additional bookkeeping // overhead typically needed to implement it. // // This option does not affect the public interface of any generated code; // all method signatures remain the same. Furthermore, thread-safety of the // interface is not affected by this option; const methods remain safe to // call from multiple threads concurrently, while non-const methods continue // to require exclusive access. // // // Note that implementations may choose not to check required fields within // a lazy sub-message. That is, calling IsInitialized() on the outer message // may return true even if the inner message has missing required fields. // This is necessary because otherwise the inner message would have to be // parsed in order to perform the check, defeating the purpose of lazy // parsing. An implementation which chooses not to check required fields // must be consistent about it. That is, for any particular sub-message, the // implementation must either *always* check its required fields, or *never* // check its required fields, regardless of whether or not the message has // been parsed. optional bool lazy = 5 [default=false]; // Is this field deprecated? // Depending on the target platform, this can emit Deprecated annotations // for accessors, or it will be completely ignored; in the very least, this // is a formalization for deprecating fields. optional bool deprecated = 3 [default=false]; // For Google-internal migration only. Do not use. optional bool weak = 10 [default=false]; // The parser stores options it doesn't recognize here. See above. repeated UninterpretedOption uninterpreted_option = 999; // Clients can define custom options in extensions of this message. See above. extensions 1000 to max; reserved 4; // removed jtype}message OneofOptions { // The parser stores options it doesn't recognize here. See above. repeated UninterpretedOption uninterpreted_option = 999; // Clients can define custom options in extensions of this message. See above. extensions 1000 to max;}message EnumOptions { // Set this option to true to allow mapping different tag names to the same // value. optional bool allow_alias = 2; // Is this enum deprecated? // Depending on the target platform, this can emit Deprecated annotations // for the enum, or it will be completely ignored; in the very least, this // is a formalization for deprecating enums. optional bool deprecated = 3 [default=false]; // The parser stores options it doesn't recognize here. See above. repeated UninterpretedOption uninterpreted_option = 999; // Clients can define custom options in extensions of this message. See above. extensions 1000 to max;}message EnumValueOptions { // Is this enum value deprecated? // Depending on the target platform, this can emit Deprecated annotations // for the enum value, or it will be completely ignored; in the very least, // this is a formalization for deprecating enum values. optional bool deprecated = 1 [default=false]; // The parser stores options it doesn't recognize here. See above. repeated UninterpretedOption uninterpreted_option = 999; // Clients can define custom options in extensions of this message. See above. extensions 1000 to max;}message ServiceOptions { // Note: Field numbers 1 through 32 are reserved for Google's internal RPC // framework. We apologize for hoarding these numbers to ourselves, but // we were already using them long before we decided to release Protocol // Buffers. // Is this service deprecated? // Depending on the target platform, this can emit Deprecated annotations // for the service, or it will be completely ignored; in the very least, // this is a formalization for deprecating services. optional bool deprecated = 33 [default=false]; // The parser stores options it doesn't recognize here. See above. repeated UninterpretedOption uninterpreted_option = 999; // Clients can define custom options in extensions of this message. See above. extensions 1000 to max;}message MethodOptions { // Note: Field numbers 1 through 32 are reserved for Google's internal RPC // framework. We apologize for hoarding these numbers to ourselves, but // we were already using them long before we decided to release Protocol // Buffers. // Is this method deprecated? // Depending on the target platform, this can emit Deprecated annotations // for the method, or it will be completely ignored; in the very least, // this is a formalization for deprecating methods. optional bool deprecated = 33 [default=false]; // The parser stores options it doesn't recognize here. See above. repeated UninterpretedOption uninterpreted_option = 999; // Clients can define custom options in extensions of this message. See above. extensions 1000 to max;}// A message representing a option the parser does not recognize. This only// appears in options protos created by the compiler::Parser class.// DescriptorPool resolves these when building Descriptor objects. Therefore,// options protos in descriptor objects (e.g. returned by Descriptor::options(),// or produced by Descriptor::CopyTo()) will never have UninterpretedOptions// in them.message UninterpretedOption { // The name of the uninterpreted option. Each string represents a segment in // a dot-separated name. is_extension is true iff a segment represents an // extension (denoted with parentheses in options specs in .proto files). // E.g.,{ ["foo", false], ["bar.baz", true], ["qux", false] } represents // "foo.(bar.baz).qux". message NamePart { required string name_part = 1; required bool is_extension = 2; } repeated NamePart name = 2; // The value of the uninterpreted option, in whatever type the tokenizer // identified it as during parsing. Exactly one of these should be set. optional string identifier_value = 3; optional uint64 positive_int_value = 4; optional int64 negative_int_value = 5; optional double double_value = 6; optional bytes string_value = 7; optional string aggregate_value = 8;}// ===================================================================// Optional source code info// Encapsulates information about the original source file from which a// FileDescriptorProto was generated.message SourceCodeInfo { // A Location identifies a piece of source code in a .proto file which // corresponds to a particular definition. This information is intended // to be useful to IDEs, code indexers, documentation generators, and similar // tools. // // For example, say we have a file like: // message Foo { // optional string foo = 1; // } // Let's look at just the field definition: // optional string foo = 1; // ^ ^^ ^^ ^ ^^^ // a bc de f ghi // We have the following locations: // span path represents // [a,i) [ 4, 0, 2, 0 ] The whole field definition. // [a,b) [ 4, 0, 2, 0, 4 ] The label (optional). // [c,d) [ 4, 0, 2, 0, 5 ] The type (string). // [e,f) [ 4, 0, 2, 0, 1 ] The name (foo). // [g,h) [ 4, 0, 2, 0, 3 ] The number (1). // // Notes: // - A location may refer to a repeated field itself (i.e. not to any // particular index within it). This is used whenever a set of elements are // logically enclosed in a single code segment. For example, an entire // extend block (possibly containing multiple extension definitions) will // have an outer location whose path refers to the "extensions" repeated // field without an index. // - Multiple locations may have the same path. This happens when a single // logical declaration is spread out across multiple places. The most // obvious example is the "extend" block again -- there may be multiple // extend blocks in the same scope, each of which will have the same path. // - A location's span is not always a subset of its parent's span. For // example, the "extendee" of an extension declaration appears at the // beginning of the "extend" block and is shared by all extensions within // the block. // - Just because a location's span is a subset of some other location's span // does not mean that it is a descendent. For example, a "group" defines // both a type and a field in a single declaration. Thus, the locations // corresponding to the type and field and their components will overlap. // - Code which tries to interpret locations should probably be designed to // ignore those that it doesn't understand, as more types of locations could // be recorded in the future. repeated Location location = 1; message Location { // Identifies which part of the FileDescriptorProto was defined at this // location. // // Each element is a field number or an index. They form a path from // the root FileDescriptorProto to the place where the definition. For // example, this path: // [ 4, 3, 2, 7, 1 ] // refers to: // file.message_type(3) // 4, 3 // .field(7) // 2, 7 // .name() // 1 // This is because FileDescriptorProto.message_type has field number 4: // repeated DescriptorProto message_type = 4; // and DescriptorProto.field has field number 2: // repeated FieldDescriptorProto field = 2; // and FieldDescriptorProto.name has field number 1: // optional string name = 1; // // Thus, the above path gives the location of a field name. If we removed // the last element: // [ 4, 3, 2, 7 ] // this path refers to the whole field declaration (from the beginning // of the label to the terminating semicolon). repeated int32 path = 1 [packed=true]; // Always has exactly three or four elements: start line, start column, // end line (optional, otherwise assumed same as start line), end column. // These are packed into a single field for efficiency. Note that line // and column numbers are zero-based -- typically you will want to add // 1 to each before displaying to a user. repeated int32 span = 2 [packed=true]; // If this SourceCodeInfo represents a complete declaration, these are any // comments appearing before and after the declaration which appear to be // attached to the declaration. // // A series of line comments appearing on consecutive lines, with no other // tokens appearing on those lines, will be treated as a single comment. // // leading_detached_comments will keep paragraphs of comments that appear // before (but not connected to) the current element. Each paragraph, // separated by empty lines, will be one comment element in the repeated // field. // // Only the comment content is provided; comment markers (e.g. //) are // stripped out. For block comments, leading whitespace and an asterisk // will be stripped from the beginning of each line other than the first. // Newlines are included in the output. // // Examples: // // optional int32 foo = 1; // Comment attached to foo. // // Comment attached to bar. // optional int32 bar = 2; // // optional string baz = 3; // // Comment attached to baz. // // Another line attached to baz. // // // Comment attached to qux. // // // // Another line attached to qux. // optional double qux = 4; // // // Detached comment for corge. This is not leading or trailing comments // // to qux or corge because there are blank lines separating it from // // both. // // // Detached comment for corge paragraph 2. // // optional string corge = 5; // /* Block comment attached // * to corge. Leading asterisks // * will be removed. */ // /* Block comment attached to // * grault. */ // optional int32 grault = 6; // // // ignored detached comments. optional string leading_comments = 3; optional string trailing_comments = 4; repeated string leading_detached_comments = 6; }}// Describes the relationship between generated code and its original source// file. A GeneratedCodeInfo message is associated with only one generated// source file, but may contain references to different source .proto files.message GeneratedCodeInfo { // An Annotation connects some span of text in generated code to an element // of its generating .proto file. repeated Annotation annotation = 1; message Annotation { // Identifies the element in the original source .proto file. This field // is formatted the same as SourceCodeInfo.Location.path. repeated int32 path = 1 [packed=true]; // Identifies the filesystem path to the original source .proto. optional string source_file = 2; // Identifies the starting offset in bytes in the generated code // that relates to the identified object. optional int32 begin = 3; // Identifies the ending offset in bytes in the generated code that // relates to the identified offset. The end offset should be one past // the last relevant byte (so the length of the text = end - begin). optional int32 end = 4; }}