src/main/protobuf/stardoc_output.proto - bazel - Git at Google

 // Copyright 2019 The Bazel Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //    http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
 //
 // Protos for Stardoc data.
 //
 // Stardoc collects information about Starlark functions, providers, and rules.
 syntax = "proto3";

 package stardoc_output;

 // option java_api_version = 2;
 option java_package = "com.google.devtools.build.lib.starlarkdocextract";
 option java_outer_classname = "StardocOutputProtos";

 // The root output proto of Stardoc. An invocation of Stardoc on a single file
 // will output exactly one instance of this proto, representing all
 // documentation for the input Starlark file.
 message ModuleInfo {
   repeated RuleInfo rule_info = 1;

   repeated ProviderInfo provider_info = 2;

   repeated StarlarkFunctionInfo func_info = 3;

   repeated AspectInfo aspect_info = 4;

   // The docstring present at the top of the input Starlark file.
   string module_docstring = 5;

   // The display form of the label of the module file (as seen from the
   // starlark_doc_extract or Stardoc target's repo). Unset when there is no
   // module file (e.g. when the module is a REPL, or in Bazel's internal tests).
   string file = 6;

   repeated ModuleExtensionInfo module_extension_info = 7;

   repeated RepositoryRuleInfo repository_rule_info = 8;

   repeated MacroInfo macro_info = 9;
 }

 // Representation of a Starlark rule attribute type. These generally
 // have a one-to-one correspondence with functions defined at
 // https://bazel.build/rules/lib/attr.
 enum AttributeType {
   UNKNOWN = 0;
   // A special case of STRING; all rules have exactly one implicit
   // attribute "name" of type NAME.
   NAME = 1;
   INT = 2;
   LABEL = 3;
   STRING = 4;
   STRING_LIST = 5;
   INT_LIST = 6;
   LABEL_LIST = 7;
   BOOLEAN = 8;
   LABEL_STRING_DICT = 9;
   STRING_DICT = 10;
   STRING_LIST_DICT = 11;
   OUTPUT = 12;
   OUTPUT_LIST = 13;
   LABEL_DICT_UNARY = 14;
 }

 // Representation of a Starlark rule definition.
 message RuleInfo {
   // In Stardoc and starlark_doc_extract output, this is the name under which
   // the rule is made accessible to a user of this module, including any structs
   // it is nested in, for example "foo.foo_library".
   //
   // In query output, this is the name under which the rule was defined (which
   // might be a private symbol prefixed with "_").
   string rule_name = 1;

   // The documentation string of the rule.
   string doc_string = 2;

   // The attributes of the rule.
   repeated AttributeInfo attribute = 3;

   // Note: legacy Stardoc (0.5.x and earlier) does not set any fields below.

   // The module where and the name under which the rule was originally declared.
   OriginKey origin_key = 4;

   // The list of providers that the rule's implementation must return. Unset if
   // the rule lists no advertised providers.
   ProviderNameGroup advertised_providers = 5;

   // True if this is a test rule.
   bool test = 6;

   // True if this is an executable rule.
   //
   // Note: if test is true, executable is also true (test rules are implicitly
   // executable).
   bool executable = 7;
 }

 // Representation of a Starlark symbolic macro definition.
 // Note: symbolic macros (and thus, their documentation format) are an
 // experimental feature gated by the --experimental_enable_first_class_macros
 // flag.
 message MacroInfo {
   // The name under which the macro is made accessible to a user of this module,
   // including any structs it is nested in, for example "foo.foo_library".
   string macro_name = 1;

   // The documentation string of the macro.
   string doc_string = 2;

   // The attributes of the macro.
   repeated AttributeInfo attribute = 3;

   // The module where and the name under which the macro was originally
   // declared.
   OriginKey origin_key = 4;

   // True if this macro is a rule finalizer.
   bool finalizer = 5;
 }

 // Representation of a Starlark rule, repository rule, or module extension tag
 // attribute definition, comprised of an attribute name, and a schema defined by
 // a call to one of the 'attr' module methods enumerated at
 // https://bazel.build/rules/lib/attr
 message AttributeInfo {
   // The name of the attribute.
   string name = 1;

   // The documentation string of the attribute, supplied via the 'doc'
   // parameter to the schema-creation call.
   string doc_string = 2;

   // The type of the attribute, defined generally by which function is invoked
   // in the attr module.
   AttributeType type = 3;

   // If true, all targets of the rule must specify a value for this attribute.
   bool mandatory = 4;

   // The target(s) in this attribute must define all the providers of at least
   // one of the ProviderNameGroups in this list. If the Attribute Type is not a
   // label, a label list, or a label-keyed string dictionary, the field will be
   // left empty. For attributes of a repository rule or a module extension tag,
   // this attribute is meaningless and may be ignored.
   // TODO(b/290788853): ensure this field is always empty for attributes of a
   // repository rule or a module extension tag.
   repeated ProviderNameGroup provider_name_group = 5;

   // The string representation of the default value of this attribute.
   string default_value = 6;

   // If true, the attribute is non-configurable.
   bool nonconfigurable = 7;

   // If true, the attribute is defined in Bazel's native code, not in Starlark.
   bool natively_defined = 8;
 }

 // Representation of a set of providers.
 message ProviderNameGroup {
   // The names of the providers.
   //
   // This field is only intended for rendering human-readable output.
   // Please use origin_key (a list of the same length and in the same order as
   // this field) for cross-references and tooling.
   //
   // Note: legacy Stardoc (0.5.x and earlier) is unable to extract the name in
   // some circumstances (for example, if the provider is nested in a struct),
   // and in that case, the provider name will be "Unknown Provider".
   repeated string provider_name = 1;

   // A list of unambiguous references to providers, of the same length and in
   // the same order as the provider_name list.
   //
   // For provider symbols, this means modules where and the names under which
   // the providers were originally declared.
   //
   // For legacy struct providers, origin_key.file is unset.
   //
   // Note: legacy Stardoc (0.5.x and earlier) does not set this field.
   repeated OriginKey origin_key = 2;
 }

 // Representation of Starlark function definition.
 message StarlarkFunctionInfo {
   // The name under which the function is made accessible to a user of this
   // module, including any structs it is nested in, for example
   // "foo.frobnicate".
   string function_name = 1;

   // The parameters for the function, in the following order:
   // - positional parameters
   // - keyword-only parameters
   // - residual varargs parameter (`*args`)
   // - residual keyword arguments parameter (`**kwargs`)
   // This order differs from the order in which parameters are listed in the
   // function's declaration (where positional parameters and keyword-only
   // parameters are separated either by `*` or `*args`). The declaration order
   // can be recovered by looking for the transition from ordinary/positional to
   // keyword-only.
   repeated FunctionParamInfo parameter = 2;

   // The documented description of the function (if specified in the function's
   // docstring).
   string doc_string = 3;

   // The return value for the function.
   FunctionReturnInfo return = 4;

   // The deprecation for the function.
   FunctionDeprecationInfo deprecated = 5;

   // The module where and the name under which the function was originally
   // declared.
   //
   // Note: legacy Stardoc (0.5.x and earlier) does not set this field.
   OriginKey origin_key = 6;
 }

 // Representation of the syntactic role of a given function parameter.
 enum FunctionParamRole {
   PARAM_ROLE_UNSPECIFIED = 0;
   // An ordinary parameter which may be used as a positional or by keyword.
   PARAM_ROLE_ORDINARY = 1;
   // A positional-only parameter; such parameters cannot be defined in pure
   // Starlark code, but exist in some natively-defined functions.
   PARAM_ROLE_POSITIONAL_ONLY = 2;
   // A keyword-only parameter, i.e. a non-vararg/kwarg parameter that follows
   // `*` or `*args` in the function's declaration.
   PARAM_ROLE_KEYWORD_ONLY = 3;
   // Residual varargs, typically `*args` in the function's declaration.
   PARAM_ROLE_VARARGS = 4;
   // Residual keyword arguments, typically `**kwargs` in the function's
   // declaration.
   PARAM_ROLE_KWARGS = 5;
 }

 // Representation of a Starlark function parameter definition.
 message FunctionParamInfo {
   // The name of the parameter. This does *not* include the `*` or `**` prefix
   // for varargs or residual keyword argument parameters.
   string name = 1;

   // The documented description of the parameter (if specified in the function's
   // docstring).
   string doc_string = 2;

   // If not an empty string, the default value of the parameter displayed
   // as a string.
   string default_value = 3;

   // If true, the default value is unset and a value is needed for this
   // parameter. This might be false even if defaultValue is empty in the case of
   // special parameter such as *args and **kwargs"
   bool mandatory = 4;

   // The parameter's syntactic role.
   FunctionParamRole role = 5;
 }

 message FunctionReturnInfo {
   // The documented return value of the function (if specified in the function's
   // docstring).
   string doc_string = 1;
 }

 message FunctionDeprecationInfo {
   // The documented deprecation of the function (if specified in the function's
   // docstring).
   string doc_string = 1;
 }

 // Representation of a Starlark provider field definition, comprised of
 // the field name and provider description.
 message ProviderFieldInfo {
   // The name of the field.
   string name = 1;

   // The description of the provider.
   string doc_string = 2;
 }

 // Representation of a Starlark provider definition.
 message ProviderInfo {
   // The name under which the provider is made accessible to a user of this
   // module, including any structs it is nested in, for example "foo.FooInfo".
   string provider_name = 1;

   // The description of the provider.
   string doc_string = 2;

   // The fields of the provider.
   repeated ProviderFieldInfo field_info = 3;

   // Note: legacy Stardoc (0.5.x and earlier) does not set any fields below.

   // The module where and the name under which the provider was originally
   // declared.
   OriginKey origin_key = 4;

   // The provider's init callback.
   StarlarkFunctionInfo init = 5;
 }

 // Representation of a Starlark aspect definition.
 message AspectInfo {
   // The name under which the aspect is made accessible to a user of this
   // module, including any structs it is nested in, for example
   // "foo.foo_aspect".
   string aspect_name = 1;

   // The documentation string of the aspect.
   string doc_string = 2;

   // The rule attributes along which the aspect propagates.
   repeated string aspect_attribute = 3;

   // The attributes of the aspect.
   repeated AttributeInfo attribute = 4;

   // The module where and the name under which the aspect was originally
   // declared.
   //
   // Note: legacy Stardoc (0.5.x and earlier) does not set this field.
   OriginKey origin_key = 5;
 }

 // Representation of a Bazel module extension, i.e. the object returned by
 // calling `module_extension(...)`.
 //
 // Note: legacy Stardoc (0.5.x and earlier) does not emit this message.
 message ModuleExtensionInfo {
   // The name under which the extension is made accessible to a user of this
   // Starlark module.
   string extension_name = 1;

   // The documentation string of the extension.
   string doc_string = 2;

   // The tag classes of the extension.
   repeated ModuleExtensionTagClassInfo tag_class = 3;

   // The Starlark module where the Bazel module extension was originally
   // declared; origin_key.name is currently never set.
   // TODO(arostovtsev): attempt to retrieve the name under which the module
   // extension was originally declared if it was declared as a global.
   OriginKey origin_key = 4;
 }

 // Representation of a Bazel module extension tag class.
 message ModuleExtensionTagClassInfo {
   // The name of the tag for this tag class.
   string tag_name = 1;

   // The documentation string of the tag class.
   string doc_string = 2;

   // The tag class's attributes.
   repeated AttributeInfo attribute = 3;
 }

 // Representation of a Bazel repository rule, i.e. the object returned by
 // calling `repository_rule(...)`.
 //
 // Note: legacy Stardoc (0.5.x and earlier) does not emit this message, instead
 // using RuleInfo.
 message RepositoryRuleInfo {
   // The name under which the repository rule is made accessible to a user of
   // this Starlark module.
   string rule_name = 1;

   // The documentation string of the repository rule.
   string doc_string = 2;

   // The attributes of the repository rule.
   repeated AttributeInfo attribute = 3;

   // Environment variables that this repository rule depends on.
   repeated string environ = 4;

   // The Starlark module where and the name under which the repository rule was
   // originally declared.
   OriginKey origin_key = 5;
 }

 // Representation of the origin of a rule, provider, aspect, or function.
 // Intended to be used for building unambiguous cross-references: for example,
 // between an element of a ProviderNameGroup required by a rule attribute and
 // its corresponding ProviderInfo.
 message OriginKey {
   // The name under which the entity was originally exported. Unset when the
   // entity was not exported in its module.
   string name = 1;

   // The display form of the label of the module file in which the entity was
   // originally declared (as seen from the starlark_doc_extract or Stardoc
   // target's repo), or "<native>" for Bazel's built-in entities implemented in
   // Java. Unset when there is no module file (such as for legacy struct
   // providers, when the module is a REPL, or in Bazel's internal tests).
   string file = 2;
 }
	// Copyright 2019 The Bazel Authors. All rights reserved.
	//
	// Licensed under the Apache License, Version 2.0 (the "License");
	// you may not use this file except in compliance with the License.
	// You may obtain a copy of the License at
	//
	// http://www.apache.org/licenses/LICENSE-2.0
	//
	// Unless required by applicable law or agreed to in writing, software
	// distributed under the License is distributed on an "AS IS" BASIS,
	// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	// See the License for the specific language governing permissions and
	// limitations under the License.
	//
	// Protos for Stardoc data.
	//
	// Stardoc collects information about Starlark functions, providers, and rules.
	syntax = "proto3";

	package stardoc_output;

	// option java_api_version = 2;
	option java_package = "com.google.devtools.build.lib.starlarkdocextract";
	option java_outer_classname = "StardocOutputProtos";

	// The root output proto of Stardoc. An invocation of Stardoc on a single file
	// will output exactly one instance of this proto, representing all
	// documentation for the input Starlark file.
	message ModuleInfo {
	repeated RuleInfo rule_info = 1;

	repeated ProviderInfo provider_info = 2;

	repeated StarlarkFunctionInfo func_info = 3;

	repeated AspectInfo aspect_info = 4;

	// The docstring present at the top of the input Starlark file.
	string module_docstring = 5;

	// The display form of the label of the module file (as seen from the
	// starlark_doc_extract or Stardoc target's repo). Unset when there is no
	// module file (e.g. when the module is a REPL, or in Bazel's internal tests).
	string file = 6;

	repeated ModuleExtensionInfo module_extension_info = 7;

	repeated RepositoryRuleInfo repository_rule_info = 8;

	repeated MacroInfo macro_info = 9;
	}

	// Representation of a Starlark rule attribute type. These generally
	// have a one-to-one correspondence with functions defined at
	// https://bazel.build/rules/lib/attr.
	enum AttributeType {
	UNKNOWN = 0;
	// A special case of STRING; all rules have exactly one implicit
	// attribute "name" of type NAME.
	NAME = 1;
	INT = 2;
	LABEL = 3;
	STRING = 4;
	STRING_LIST = 5;
	INT_LIST = 6;
	LABEL_LIST = 7;
	BOOLEAN = 8;
	LABEL_STRING_DICT = 9;
	STRING_DICT = 10;
	STRING_LIST_DICT = 11;
	OUTPUT = 12;
	OUTPUT_LIST = 13;
	LABEL_DICT_UNARY = 14;
	}

	// Representation of a Starlark rule definition.
	message RuleInfo {
	// In Stardoc and starlark_doc_extract output, this is the name under which
	// the rule is made accessible to a user of this module, including any structs
	// it is nested in, for example "foo.foo_library".
	//
	// In query output, this is the name under which the rule was defined (which
	// might be a private symbol prefixed with "_").
	string rule_name = 1;

	// The documentation string of the rule.
	string doc_string = 2;

	// The attributes of the rule.
	repeated AttributeInfo attribute = 3;

	// Note: legacy Stardoc (0.5.x and earlier) does not set any fields below.

	// The module where and the name under which the rule was originally declared.
	OriginKey origin_key = 4;

	// The list of providers that the rule's implementation must return. Unset if
	// the rule lists no advertised providers.
	ProviderNameGroup advertised_providers = 5;

	// True if this is a test rule.
	bool test = 6;

	// True if this is an executable rule.
	//
	// Note: if test is true, executable is also true (test rules are implicitly
	// executable).
	bool executable = 7;
	}

	// Representation of a Starlark symbolic macro definition.
	// Note: symbolic macros (and thus, their documentation format) are an
	// experimental feature gated by the --experimental_enable_first_class_macros
	// flag.
	message MacroInfo {
	// The name under which the macro is made accessible to a user of this module,
	// including any structs it is nested in, for example "foo.foo_library".
	string macro_name = 1;

	// The documentation string of the macro.
	string doc_string = 2;

	// The attributes of the macro.
	repeated AttributeInfo attribute = 3;

	// The module where and the name under which the macro was originally
	// declared.
	OriginKey origin_key = 4;

	// True if this macro is a rule finalizer.
	bool finalizer = 5;
	}

	// Representation of a Starlark rule, repository rule, or module extension tag
	// attribute definition, comprised of an attribute name, and a schema defined by
	// a call to one of the 'attr' module methods enumerated at
	// https://bazel.build/rules/lib/attr
	message AttributeInfo {
	// The name of the attribute.
	string name = 1;

	// The documentation string of the attribute, supplied via the 'doc'
	// parameter to the schema-creation call.
	string doc_string = 2;

	// The type of the attribute, defined generally by which function is invoked
	// in the attr module.
	AttributeType type = 3;

	// If true, all targets of the rule must specify a value for this attribute.
	bool mandatory = 4;

	// The target(s) in this attribute must define all the providers of at least
	// one of the ProviderNameGroups in this list. If the Attribute Type is not a
	// label, a label list, or a label-keyed string dictionary, the field will be
	// left empty. For attributes of a repository rule or a module extension tag,
	// this attribute is meaningless and may be ignored.
	// TODO(b/290788853): ensure this field is always empty for attributes of a
	// repository rule or a module extension tag.
	repeated ProviderNameGroup provider_name_group = 5;

	// The string representation of the default value of this attribute.
	string default_value = 6;

	// If true, the attribute is non-configurable.
	bool nonconfigurable = 7;

	// If true, the attribute is defined in Bazel's native code, not in Starlark.
	bool natively_defined = 8;
	}

	// Representation of a set of providers.
	message ProviderNameGroup {
	// The names of the providers.
	//
	// This field is only intended for rendering human-readable output.
	// Please use origin_key (a list of the same length and in the same order as
	// this field) for cross-references and tooling.
	//
	// Note: legacy Stardoc (0.5.x and earlier) is unable to extract the name in
	// some circumstances (for example, if the provider is nested in a struct),
	// and in that case, the provider name will be "Unknown Provider".
	repeated string provider_name = 1;

	// A list of unambiguous references to providers, of the same length and in
	// the same order as the provider_name list.
	//
	// For provider symbols, this means modules where and the names under which
	// the providers were originally declared.
	//
	// For legacy struct providers, origin_key.file is unset.
	//
	// Note: legacy Stardoc (0.5.x and earlier) does not set this field.
	repeated OriginKey origin_key = 2;
	}

	// Representation of Starlark function definition.
	message StarlarkFunctionInfo {
	// The name under which the function is made accessible to a user of this
	// module, including any structs it is nested in, for example
	// "foo.frobnicate".
	string function_name = 1;

	// The parameters for the function, in the following order:
	// - positional parameters
	// - keyword-only parameters
	// - residual varargs parameter (`*args`)
	// - residual keyword arguments parameter (`**kwargs`)
	// This order differs from the order in which parameters are listed in the
	// function's declaration (where positional parameters and keyword-only
	// parameters are separated either by `` or `args`). The declaration order
	// can be recovered by looking for the transition from ordinary/positional to
	// keyword-only.
	repeated FunctionParamInfo parameter = 2;

	// The documented description of the function (if specified in the function's
	// docstring).
	string doc_string = 3;

	// The return value for the function.
	FunctionReturnInfo return = 4;

	// The deprecation for the function.
	FunctionDeprecationInfo deprecated = 5;

	// The module where and the name under which the function was originally
	// declared.
	//
	// Note: legacy Stardoc (0.5.x and earlier) does not set this field.
	OriginKey origin_key = 6;
	}

	// Representation of the syntactic role of a given function parameter.
	enum FunctionParamRole {
	PARAM_ROLE_UNSPECIFIED = 0;
	// An ordinary parameter which may be used as a positional or by keyword.
	PARAM_ROLE_ORDINARY = 1;
	// A positional-only parameter; such parameters cannot be defined in pure
	// Starlark code, but exist in some natively-defined functions.
	PARAM_ROLE_POSITIONAL_ONLY = 2;
	// A keyword-only parameter, i.e. a non-vararg/kwarg parameter that follows
	// `` or `args` in the function's declaration.
	PARAM_ROLE_KEYWORD_ONLY = 3;
	// Residual varargs, typically `*args` in the function's declaration.
	PARAM_ROLE_VARARGS = 4;
	// Residual keyword arguments, typically `**kwargs` in the function's
	// declaration.
	PARAM_ROLE_KWARGS = 5;
	}

	// Representation of a Starlark function parameter definition.
	message FunctionParamInfo {
	// The name of the parameter. This does not include the `` or `*` prefix
	// for varargs or residual keyword argument parameters.
	string name = 1;

	// The documented description of the parameter (if specified in the function's
	// docstring).
	string doc_string = 2;

	// If not an empty string, the default value of the parameter displayed
	// as a string.
	string default_value = 3;

	// If true, the default value is unset and a value is needed for this
	// parameter. This might be false even if defaultValue is empty in the case of
	// special parameter such as args and *kwargs"
	bool mandatory = 4;

	// The parameter's syntactic role.
	FunctionParamRole role = 5;
	}

	message FunctionReturnInfo {
	// The documented return value of the function (if specified in the function's
	// docstring).
	string doc_string = 1;
	}

	message FunctionDeprecationInfo {
	// The documented deprecation of the function (if specified in the function's
	// docstring).
	string doc_string = 1;
	}

	// Representation of a Starlark provider field definition, comprised of
	// the field name and provider description.
	message ProviderFieldInfo {
	// The name of the field.
	string name = 1;

	// The description of the provider.
	string doc_string = 2;
	}

	// Representation of a Starlark provider definition.
	message ProviderInfo {
	// The name under which the provider is made accessible to a user of this
	// module, including any structs it is nested in, for example "foo.FooInfo".
	string provider_name = 1;

	// The description of the provider.
	string doc_string = 2;

	// The fields of the provider.
	repeated ProviderFieldInfo field_info = 3;

	// Note: legacy Stardoc (0.5.x and earlier) does not set any fields below.

	// The module where and the name under which the provider was originally
	// declared.
	OriginKey origin_key = 4;

	// The provider's init callback.
	StarlarkFunctionInfo init = 5;
	}

	// Representation of a Starlark aspect definition.
	message AspectInfo {
	// The name under which the aspect is made accessible to a user of this
	// module, including any structs it is nested in, for example
	// "foo.foo_aspect".
	string aspect_name = 1;

	// The documentation string of the aspect.
	string doc_string = 2;

	// The rule attributes along which the aspect propagates.
	repeated string aspect_attribute = 3;

	// The attributes of the aspect.
	repeated AttributeInfo attribute = 4;

	// The module where and the name under which the aspect was originally
	// declared.
	//
	// Note: legacy Stardoc (0.5.x and earlier) does not set this field.
	OriginKey origin_key = 5;
	}

	// Representation of a Bazel module extension, i.e. the object returned by
	// calling `module_extension(...)`.
	//
	// Note: legacy Stardoc (0.5.x and earlier) does not emit this message.
	message ModuleExtensionInfo {
	// The name under which the extension is made accessible to a user of this
	// Starlark module.
	string extension_name = 1;

	// The documentation string of the extension.
	string doc_string = 2;

	// The tag classes of the extension.
	repeated ModuleExtensionTagClassInfo tag_class = 3;

	// The Starlark module where the Bazel module extension was originally
	// declared; origin_key.name is currently never set.
	// TODO(arostovtsev): attempt to retrieve the name under which the module
	// extension was originally declared if it was declared as a global.
	OriginKey origin_key = 4;
	}

	// Representation of a Bazel module extension tag class.
	message ModuleExtensionTagClassInfo {
	// The name of the tag for this tag class.
	string tag_name = 1;

	// The documentation string of the tag class.
	string doc_string = 2;

	// The tag class's attributes.
	repeated AttributeInfo attribute = 3;
	}

	// Representation of a Bazel repository rule, i.e. the object returned by
	// calling `repository_rule(...)`.
	//
	// Note: legacy Stardoc (0.5.x and earlier) does not emit this message, instead
	// using RuleInfo.
	message RepositoryRuleInfo {
	// The name under which the repository rule is made accessible to a user of
	// this Starlark module.
	string rule_name = 1;

	// The documentation string of the repository rule.
	string doc_string = 2;

	// The attributes of the repository rule.
	repeated AttributeInfo attribute = 3;

	// Environment variables that this repository rule depends on.
	repeated string environ = 4;

	// The Starlark module where and the name under which the repository rule was
	// originally declared.
	OriginKey origin_key = 5;
	}

	// Representation of the origin of a rule, provider, aspect, or function.
	// Intended to be used for building unambiguous cross-references: for example,
	// between an element of a ProviderNameGroup required by a rule attribute and
	// its corresponding ProviderInfo.
	message OriginKey {
	// The name under which the entity was originally exported. Unset when the
	// entity was not exported in its module.
	string name = 1;

	// The display form of the label of the module file in which the entity was
	// originally declared (as seen from the starlark_doc_extract or Stardoc
	// target's repo), or "<native>" for Bazel's built-in entities implemented in
	// Java. Unset when there is no module file (such as for legacy struct
	// providers, when the module is a REPL, or in Bazel's internal tests).
	string file = 2;
	}