objectivec/GPBDescriptor_PackagePrivate.h - platform/external/protobuf-javalite - Gitiles

 // 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.

 // This header is private to the ProtobolBuffers library and must NOT be
 // included by any sources outside this library. The contents of this file are
 // subject to change at any time without notice.

 #import "GPBDescriptor.h"
 #import "GPBWireFormat.h"

 // Describes attributes of the field.
 typedef NS_OPTIONS(uint32_t, GPBFieldFlags) {
   // These map to standard protobuf concepts.
   GPBFieldRequired        = 1 << 0,
   GPBFieldRepeated        = 1 << 1,
   GPBFieldPacked          = 1 << 2,
   GPBFieldOptional        = 1 << 3,
   GPBFieldHasDefaultValue = 1 << 4,

   // These are not standard protobuf concepts, they are specific to the
   // Objective C runtime.

   // These bits are used to mark the field as a map and what the key
   // type is.
   GPBFieldMapKeyMask     = 0xF << 8,
   GPBFieldMapKeyInt32    =  1 << 8,
   GPBFieldMapKeyInt64    =  2 << 8,
   GPBFieldMapKeyUInt32   =  3 << 8,
   GPBFieldMapKeyUInt64   =  4 << 8,
   GPBFieldMapKeySInt32   =  5 << 8,
   GPBFieldMapKeySInt64   =  6 << 8,
   GPBFieldMapKeyFixed32  =  7 << 8,
   GPBFieldMapKeyFixed64  =  8 << 8,
   GPBFieldMapKeySFixed32 =  9 << 8,
   GPBFieldMapKeySFixed64 = 10 << 8,
   GPBFieldMapKeyBool     = 11 << 8,
   GPBFieldMapKeyString   = 12 << 8,

   // Indicates the field needs custom handling for the TextFormat name, if not
   // set, the name can be derived from the ObjC name.
   GPBFieldTextFormatNameCustom = 1 << 16,
   // Indicates the field has an enum descriptor.
   GPBFieldHasEnumDescriptor = 1 << 17,
 };

 // Describes a single field in a protobuf as it is represented as an ivar.
 typedef struct GPBMessageFieldDescription {
   // Name of ivar.
   const char *name;
   // The field number for the ivar.
   uint32_t number;
   // The index (in bits) into _has_storage_.
   //   > 0: the bit to use for a value being set.
   //   = 0: no storage used.
   //   < 0: in a oneOf, use a full int32 to record the field active.
   int32_t hasIndex;
   // Field flags. Use accessor functions below.
   GPBFieldFlags flags;
   // Data type of the ivar.
   GPBDataType dataType;
   // Offset of the variable into it's structure struct.
   size_t offset;
   // FieldOptions protobuf, serialized as string.
   const char *fieldOptions;

   GPBGenericValue defaultValue;  // Default value for the ivar.
   union {
     const char *className;  // Name for message class.
     // For enums only: If EnumDescriptors are compiled in, it will be that,
     // otherwise it will be the verifier.
     GPBEnumDescriptorFunc enumDescFunc;
     GPBEnumValidationFunc enumVerifier;
   } dataTypeSpecific;
 } GPBMessageFieldDescription;

 // Describes a oneof.
 typedef struct GPBMessageOneofDescription {
   // Name of this enum oneof.
   const char *name;
   // The index of this oneof in the has_storage.
   int32_t index;
 } GPBMessageOneofDescription;

 // Describes an enum type defined in a .proto file.
 typedef struct GPBMessageEnumDescription {
   GPBEnumDescriptorFunc enumDescriptorFunc;
 } GPBMessageEnumDescription;

 // Describes an individual enum constant of a particular type.
 typedef struct GPBMessageEnumValueDescription {
   // Name of this enum constant.
   const char *name;
   // Numeric value of this enum constant.
   int32_t number;
 } GPBMessageEnumValueDescription;

 // Describes attributes of the extension.
 typedef NS_OPTIONS(uint32_t, GPBExtensionOptions) {
   // These map to standard protobuf concepts.
   GPBExtensionRepeated      = 1 << 0,
   GPBExtensionPacked        = 1 << 1,
   GPBExtensionSetWireFormat = 1 << 2,
 };

 // An extension
 typedef struct GPBExtensionDescription {
   const char *singletonName;
   GPBDataType dataType;
   const char *extendedClass;
   int32_t fieldNumber;
   GPBGenericValue defaultValue;
   const char *messageOrGroupClassName;
   GPBExtensionOptions options;
   GPBEnumDescriptorFunc enumDescriptorFunc;
 } GPBExtensionDescription;

 @interface GPBDescriptor () {
  @package
   NSArray *fields_;
   NSArray *oneofs_;
   size_t storageSize_;
 }

 // fieldDescriptions, enumDescriptions, rangeDescriptions, and
 // extraTextFormatInfo have to be long lived, they are held as raw pointers.
 + (instancetype)
     allocDescriptorForClass:(Class)messageClass
                   rootClass:(Class)rootClass
                        file:(GPBFileDescriptor *)file
                      fields:(GPBMessageFieldDescription *)fieldDescriptions
                  fieldCount:(NSUInteger)fieldCount
                      oneofs:(GPBMessageOneofDescription *)oneofDescriptions
                  oneofCount:(NSUInteger)oneofCount
                       enums:(GPBMessageEnumDescription *)enumDescriptions
                   enumCount:(NSUInteger)enumCount
                      ranges:(const GPBExtensionRange *)ranges
                  rangeCount:(NSUInteger)rangeCount
                 storageSize:(size_t)storageSize
                  wireFormat:(BOOL)wireFormat;
 + (instancetype)
     allocDescriptorForClass:(Class)messageClass
                   rootClass:(Class)rootClass
                        file:(GPBFileDescriptor *)file
                      fields:(GPBMessageFieldDescription *)fieldDescriptions
                  fieldCount:(NSUInteger)fieldCount
                      oneofs:(GPBMessageOneofDescription *)oneofDescriptions
                  oneofCount:(NSUInteger)oneofCount
                       enums:(GPBMessageEnumDescription *)enumDescriptions
                   enumCount:(NSUInteger)enumCount
                      ranges:(const GPBExtensionRange *)ranges
                  rangeCount:(NSUInteger)rangeCount
                 storageSize:(size_t)storageSize
                  wireFormat:(BOOL)wireFormat
         extraTextFormatInfo:(const char *)extraTextFormatInfo;

 - (instancetype)initWithClass:(Class)messageClass
                          file:(GPBFileDescriptor *)file
                        fields:(NSArray *)fields
                        oneofs:(NSArray *)oneofs
                         enums:(NSArray *)enums
               extensionRanges:(const GPBExtensionRange *)ranges
          extensionRangesCount:(NSUInteger)rangeCount
                   storageSize:(size_t)storage
                    wireFormat:(BOOL)wireFormat;

 @end

 @interface GPBFileDescriptor ()
 - (instancetype)initWithPackage:(NSString *)package
                          syntax:(GPBFileSyntax)syntax;
 @end

 @interface GPBOneofDescriptor () {
  @package
   GPBMessageOneofDescription *oneofDescription_;
   NSArray *fields_;

   SEL caseSel_;
 }
 - (instancetype)initWithOneofDescription:
                     (GPBMessageOneofDescription *)oneofDescription
                                   fields:(NSArray *)fields;
 @end

 @interface GPBFieldDescriptor () {
  @package
   GPBMessageFieldDescription *description_;
   GPB_UNSAFE_UNRETAINED GPBOneofDescriptor *containingOneof_;

   SEL getSel_;
   SEL setSel_;
   SEL hasOrCountSel_;  // *Count for map<>/repeated fields, has* otherwise.
   SEL setHasSel_;
 }

 // Single initializer
 // description has to be long lived, it is held as a raw pointer.
 - (instancetype)initWithFieldDescription:
                     (GPBMessageFieldDescription *)description
                                rootClass:(Class)rootClass
                                   syntax:(GPBFileSyntax)syntax;
 @end

 @interface GPBEnumDescriptor ()
 // valueDescriptions and extraTextFormatInfo have to be long lived, they are
 // held as raw pointers.
 + (instancetype)
     allocDescriptorForName:(NSString *)name
                     values:(GPBMessageEnumValueDescription *)valueDescriptions
                 valueCount:(NSUInteger)valueCount
               enumVerifier:(GPBEnumValidationFunc)enumVerifier;
 + (instancetype)
     allocDescriptorForName:(NSString *)name
                     values:(GPBMessageEnumValueDescription *)valueDescriptions
                 valueCount:(NSUInteger)valueCount
               enumVerifier:(GPBEnumValidationFunc)enumVerifier
        extraTextFormatInfo:(const char *)extraTextFormatInfo;

 - (instancetype)initWithName:(NSString *)name
                       values:(GPBMessageEnumValueDescription *)valueDescriptions
                   valueCount:(NSUInteger)valueCount
                 enumVerifier:(GPBEnumValidationFunc)enumVerifier;
 @end

 @interface GPBExtensionDescriptor () {
  @package
   GPBExtensionDescription *description_;
 }
 @property(nonatomic, readonly) GPBWireFormat wireType;

 // For repeated extensions, alternateWireType is the wireType with the opposite
 // value for the packable property.  i.e. - if the extension was marked packed
 // it would be the wire type for unpacked; if the extension was marked unpacked,
 // it would be the wire type for packed.
 @property(nonatomic, readonly) GPBWireFormat alternateWireType;

 // description has to be long lived, it is held as a raw pointer.
 - (instancetype)initWithExtensionDescription:
     (GPBExtensionDescription *)description;
 - (NSComparisonResult)compareByFieldNumber:(GPBExtensionDescriptor *)other;
 @end

 CF_EXTERN_C_BEGIN

 GPB_INLINE BOOL GPBFieldIsMapOrArray(GPBFieldDescriptor *field) {
   return (field->description_->flags &
           (GPBFieldRepeated | GPBFieldMapKeyMask)) != 0;
 }

 GPB_INLINE GPBDataType GPBGetFieldDataType(GPBFieldDescriptor *field) {
   return field->description_->dataType;
 }

 GPB_INLINE int32_t GPBFieldHasIndex(GPBFieldDescriptor *field) {
   return field->description_->hasIndex;
 }

 GPB_INLINE uint32_t GPBFieldNumber(GPBFieldDescriptor *field) {
   return field->description_->number;
 }

 uint32_t GPBFieldTag(GPBFieldDescriptor *self);

 // For repeated fields, alternateWireType is the wireType with the opposite
 // value for the packable property.  i.e. - if the field was marked packed it
 // would be the wire type for unpacked; if the field was marked unpacked, it
 // would be the wire type for packed.
 uint32_t GPBFieldAlternateTag(GPBFieldDescriptor *self);

 GPB_INLINE BOOL GPBPreserveUnknownFields(GPBFileSyntax syntax) {
   return syntax != GPBFileSyntaxProto3;
 }

 GPB_INLINE BOOL GPBHasPreservingUnknownEnumSemantics(GPBFileSyntax syntax) {
   return syntax == GPBFileSyntaxProto3;
 }

 GPB_INLINE BOOL GPBExtensionIsRepeated(GPBExtensionDescription *description) {
   return (description->options & GPBExtensionRepeated) != 0;
 }

 GPB_INLINE BOOL GPBExtensionIsPacked(GPBExtensionDescription *description) {
   return (description->options & GPBExtensionPacked) != 0;
 }

 GPB_INLINE BOOL GPBExtensionIsWireFormat(GPBExtensionDescription *description) {
   return (description->options & GPBExtensionSetWireFormat) != 0;
 }


 CF_EXTERN_C_END
	// 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.

	// This header is private to the ProtobolBuffers library and must NOT be
	// included by any sources outside this library. The contents of this file are
	// subject to change at any time without notice.

	#import "GPBDescriptor.h"
	#import "GPBWireFormat.h"

	// Describes attributes of the field.
	typedef NS_OPTIONS(uint32_t, GPBFieldFlags) {
	// These map to standard protobuf concepts.
	GPBFieldRequired = 1 << 0,
	GPBFieldRepeated = 1 << 1,
	GPBFieldPacked = 1 << 2,
	GPBFieldOptional = 1 << 3,
	GPBFieldHasDefaultValue = 1 << 4,

	// These are not standard protobuf concepts, they are specific to the
	// Objective C runtime.

	// These bits are used to mark the field as a map and what the key
	// type is.
	GPBFieldMapKeyMask = 0xF << 8,
	GPBFieldMapKeyInt32 = 1 << 8,
	GPBFieldMapKeyInt64 = 2 << 8,
	GPBFieldMapKeyUInt32 = 3 << 8,
	GPBFieldMapKeyUInt64 = 4 << 8,
	GPBFieldMapKeySInt32 = 5 << 8,
	GPBFieldMapKeySInt64 = 6 << 8,
	GPBFieldMapKeyFixed32 = 7 << 8,
	GPBFieldMapKeyFixed64 = 8 << 8,
	GPBFieldMapKeySFixed32 = 9 << 8,
	GPBFieldMapKeySFixed64 = 10 << 8,
	GPBFieldMapKeyBool = 11 << 8,
	GPBFieldMapKeyString = 12 << 8,

	// Indicates the field needs custom handling for the TextFormat name, if not
	// set, the name can be derived from the ObjC name.
	GPBFieldTextFormatNameCustom = 1 << 16,
	// Indicates the field has an enum descriptor.
	GPBFieldHasEnumDescriptor = 1 << 17,
	};

	// Describes a single field in a protobuf as it is represented as an ivar.
	typedef struct GPBMessageFieldDescription {
	// Name of ivar.
	const char *name;
	// The field number for the ivar.
	uint32_t number;
	// The index (in bits) into _has_storage_.
	// > 0: the bit to use for a value being set.
	// = 0: no storage used.
	// < 0: in a oneOf, use a full int32 to record the field active.
	int32_t hasIndex;
	// Field flags. Use accessor functions below.
	GPBFieldFlags flags;
	// Data type of the ivar.
	GPBDataType dataType;
	// Offset of the variable into it's structure struct.
	size_t offset;
	// FieldOptions protobuf, serialized as string.
	const char *fieldOptions;

	GPBGenericValue defaultValue; // Default value for the ivar.
	union {
	const char *className; // Name for message class.
	// For enums only: If EnumDescriptors are compiled in, it will be that,
	// otherwise it will be the verifier.
	GPBEnumDescriptorFunc enumDescFunc;
	GPBEnumValidationFunc enumVerifier;
	} dataTypeSpecific;
	} GPBMessageFieldDescription;

	// Describes a oneof.
	typedef struct GPBMessageOneofDescription {
	// Name of this enum oneof.
	const char *name;
	// The index of this oneof in the has_storage.
	int32_t index;
	} GPBMessageOneofDescription;

	// Describes an enum type defined in a .proto file.
	typedef struct GPBMessageEnumDescription {
	GPBEnumDescriptorFunc enumDescriptorFunc;
	} GPBMessageEnumDescription;

	// Describes an individual enum constant of a particular type.
	typedef struct GPBMessageEnumValueDescription {
	// Name of this enum constant.
	const char *name;
	// Numeric value of this enum constant.
	int32_t number;
	} GPBMessageEnumValueDescription;

	// Describes attributes of the extension.
	typedef NS_OPTIONS(uint32_t, GPBExtensionOptions) {
	// These map to standard protobuf concepts.
	GPBExtensionRepeated = 1 << 0,
	GPBExtensionPacked = 1 << 1,
	GPBExtensionSetWireFormat = 1 << 2,
	};

	// An extension
	typedef struct GPBExtensionDescription {
	const char *singletonName;
	GPBDataType dataType;
	const char *extendedClass;
	int32_t fieldNumber;
	GPBGenericValue defaultValue;
	const char *messageOrGroupClassName;
	GPBExtensionOptions options;
	GPBEnumDescriptorFunc enumDescriptorFunc;
	} GPBExtensionDescription;

	@interface GPBDescriptor () {
	@package
	NSArray *fields_;
	NSArray *oneofs_;
	size_t storageSize_;
	}

	// fieldDescriptions, enumDescriptions, rangeDescriptions, and
	// extraTextFormatInfo have to be long lived, they are held as raw pointers.
	+ (instancetype)
	allocDescriptorForClass:(Class)messageClass
	rootClass:(Class)rootClass
	file:(GPBFileDescriptor *)file
	fields:(GPBMessageFieldDescription *)fieldDescriptions
	fieldCount:(NSUInteger)fieldCount
	oneofs:(GPBMessageOneofDescription *)oneofDescriptions
	oneofCount:(NSUInteger)oneofCount
	enums:(GPBMessageEnumDescription *)enumDescriptions
	enumCount:(NSUInteger)enumCount
	ranges:(const GPBExtensionRange *)ranges
	rangeCount:(NSUInteger)rangeCount
	storageSize:(size_t)storageSize
	wireFormat:(BOOL)wireFormat;
	+ (instancetype)
	allocDescriptorForClass:(Class)messageClass
	rootClass:(Class)rootClass
	file:(GPBFileDescriptor *)file
	fields:(GPBMessageFieldDescription *)fieldDescriptions
	fieldCount:(NSUInteger)fieldCount
	oneofs:(GPBMessageOneofDescription *)oneofDescriptions
	oneofCount:(NSUInteger)oneofCount
	enums:(GPBMessageEnumDescription *)enumDescriptions
	enumCount:(NSUInteger)enumCount
	ranges:(const GPBExtensionRange *)ranges
	rangeCount:(NSUInteger)rangeCount
	storageSize:(size_t)storageSize
	wireFormat:(BOOL)wireFormat
	extraTextFormatInfo:(const char *)extraTextFormatInfo;

	- (instancetype)initWithClass:(Class)messageClass
	file:(GPBFileDescriptor *)file
	fields:(NSArray *)fields
	oneofs:(NSArray *)oneofs
	enums:(NSArray *)enums
	extensionRanges:(const GPBExtensionRange *)ranges
	extensionRangesCount:(NSUInteger)rangeCount
	storageSize:(size_t)storage
	wireFormat:(BOOL)wireFormat;

	@end

	@interface GPBFileDescriptor ()
	- (instancetype)initWithPackage:(NSString *)package
	syntax:(GPBFileSyntax)syntax;
	@end

	@interface GPBOneofDescriptor () {
	@package
	GPBMessageOneofDescription *oneofDescription_;
	NSArray *fields_;

	SEL caseSel_;
	}
	- (instancetype)initWithOneofDescription:
	(GPBMessageOneofDescription *)oneofDescription
	fields:(NSArray *)fields;
	@end

	@interface GPBFieldDescriptor () {
	@package
	GPBMessageFieldDescription *description_;
	GPB_UNSAFE_UNRETAINED GPBOneofDescriptor *containingOneof_;

	SEL getSel_;
	SEL setSel_;
	SEL hasOrCountSel_; // Count for map<>/repeated fields, has otherwise.
	SEL setHasSel_;
	}

	// Single initializer
	// description has to be long lived, it is held as a raw pointer.
	- (instancetype)initWithFieldDescription:
	(GPBMessageFieldDescription *)description
	rootClass:(Class)rootClass
	syntax:(GPBFileSyntax)syntax;
	@end

	@interface GPBEnumDescriptor ()
	// valueDescriptions and extraTextFormatInfo have to be long lived, they are
	// held as raw pointers.
	+ (instancetype)
	allocDescriptorForName:(NSString *)name
	values:(GPBMessageEnumValueDescription *)valueDescriptions
	valueCount:(NSUInteger)valueCount
	enumVerifier:(GPBEnumValidationFunc)enumVerifier;
	+ (instancetype)
	allocDescriptorForName:(NSString *)name
	values:(GPBMessageEnumValueDescription *)valueDescriptions
	valueCount:(NSUInteger)valueCount
	enumVerifier:(GPBEnumValidationFunc)enumVerifier
	extraTextFormatInfo:(const char *)extraTextFormatInfo;

	- (instancetype)initWithName:(NSString *)name
	values:(GPBMessageEnumValueDescription *)valueDescriptions
	valueCount:(NSUInteger)valueCount
	enumVerifier:(GPBEnumValidationFunc)enumVerifier;
	@end

	@interface GPBExtensionDescriptor () {
	@package
	GPBExtensionDescription *description_;
	}
	@property(nonatomic, readonly) GPBWireFormat wireType;

	// For repeated extensions, alternateWireType is the wireType with the opposite
	// value for the packable property. i.e. - if the extension was marked packed
	// it would be the wire type for unpacked; if the extension was marked unpacked,
	// it would be the wire type for packed.
	@property(nonatomic, readonly) GPBWireFormat alternateWireType;

	// description has to be long lived, it is held as a raw pointer.
	- (instancetype)initWithExtensionDescription:
	(GPBExtensionDescription *)description;
	- (NSComparisonResult)compareByFieldNumber:(GPBExtensionDescriptor *)other;
	@end

	CF_EXTERN_C_BEGIN

	GPB_INLINE BOOL GPBFieldIsMapOrArray(GPBFieldDescriptor *field) {
	return (field->description_->flags &
	(GPBFieldRepeated \| GPBFieldMapKeyMask)) != 0;
	}

	GPB_INLINE GPBDataType GPBGetFieldDataType(GPBFieldDescriptor *field) {
	return field->description_->dataType;
	}

	GPB_INLINE int32_t GPBFieldHasIndex(GPBFieldDescriptor *field) {
	return field->description_->hasIndex;
	}

	GPB_INLINE uint32_t GPBFieldNumber(GPBFieldDescriptor *field) {
	return field->description_->number;
	}

	uint32_t GPBFieldTag(GPBFieldDescriptor *self);

	// For repeated fields, alternateWireType is the wireType with the opposite
	// value for the packable property. i.e. - if the field was marked packed it
	// would be the wire type for unpacked; if the field was marked unpacked, it
	// would be the wire type for packed.
	uint32_t GPBFieldAlternateTag(GPBFieldDescriptor *self);

	GPB_INLINE BOOL GPBPreserveUnknownFields(GPBFileSyntax syntax) {
	return syntax != GPBFileSyntaxProto3;
	}

	GPB_INLINE BOOL GPBHasPreservingUnknownEnumSemantics(GPBFileSyntax syntax) {
	return syntax == GPBFileSyntaxProto3;
	}

	GPB_INLINE BOOL GPBExtensionIsRepeated(GPBExtensionDescription *description) {
	return (description->options & GPBExtensionRepeated) != 0;
	}

	GPB_INLINE BOOL GPBExtensionIsPacked(GPBExtensionDescription *description) {
	return (description->options & GPBExtensionPacked) != 0;
	}

	GPB_INLINE BOOL GPBExtensionIsWireFormat(GPBExtensionDescription *description) {
	return (description->options & GPBExtensionSetWireFormat) != 0;
	}


	CF_EXTERN_C_END