third_party/protobuf: Update to HEAD (f52e188fe4)

third_party/protobuf/java/compatibility_tests/v2.5.0/protos/src/proto/google/protobuf/descriptor.proto

 // Protocol Buffers - Google's data interchange format
 // Copyright 2008 Google Inc.  All rights reserved.
-// https://developers.google.com/protocol-buffers/
+// 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
@@ skipping 16 matching lines @@
 
 // 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;
 }
@@ skipping 13 matching lines @@
 
   // 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
+  // You may safely remove this entire field whithout 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
@@ skipping 26 matching lines @@
     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.
+  // are set, this must be either TYPE_ENUM or TYPE_MESSAGE.
   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;
-}
-
 // Describes an enum type.
 message EnumDescriptorProto {
   optional string name = 1;
 
   repeated EnumValueDescriptorProto value = 2;
 
   optional EnumOptions options = 3;
 }
 
 // Describes a value within an enum.
@@ skipping 15 matching lines @@
 // 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
+//   Object-C plugin) and your porject 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:
+//   http://code.google.com/apis/protocolbuffers/docs/proto.html#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];
 
   // If set true, then the Java code generator will generate equals() and
-  // hashCode() methods for all messages defined in the .proto file.
-  // This increases generated code size, potentially substantially for large
-  // protos, which may harm a memory-constrained application.
-  // - In the full runtime this is a speed optimization, as the
-  // AbstractMessage base class includes reflection-based implementations of
-  // these methods.
-  // - In the lite runtime, setting this option changes the semantics of
-  // equals() and hashCode() to more closely match those of the full runtime;
-  // the generated methods compute their results based on field values rather
-  // than object identity. (Implementations should not assume that hashcodes
-  // will be consistent across runtimes or versions of the protocol compiler.)
+  // hashCode() methods for all messages defined in the .proto file. This is
+  // purely a speed optimization, as the AbstractMessage base class includes
+  // reflection-based implementations of these methods.
   optional bool java_generate_equals_and_hash = 20 [default=false];
 
-  // 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.
+  // placed.  There is no default.
   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.
+  // early versions of proto2.
   //
   // 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;
 }
 
 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.
+  // a single length-delimited blob.
   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
@@ skipping 17 matching lines @@
   // 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];
 
+  // EXPERIMENTAL.  DO NOT USE.
+  // For "map" fields, the name of the field in the enclosed type that
+  // is the key for this map.  For example, suppose we have:
+  //   message Item {
+  //     required string name = 1;
+  //     required string value = 2;
+  //   }
+  //   message Config {
+  //     repeated Item items = 1 [experimental_map_key="name"];
+  //   }
+  // In this situation, the map key for Item will be set to "name".
+  // TODO: Fully-implement this, then remove the "experimental_" prefix.
+  optional string experimental_map_key = 9;
+
   // 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;
 }
 
 message EnumOptions {
 
-  // Set this option to true to allow mapping different tag names to the same
+  // Set this option to false to disallow mapping different tag names to a 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];
+  optional bool allow_alias = 2 [default=true];
 
   // 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.
@@ skipping 106 matching lines @@
     // 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;
-  }
-}