upb/reflection/enum_def.c - third_party/protobuf - Git at Google

 // Protocol Buffers - Google's data interchange format
 // Copyright 2023 Google LLC.  All rights reserved.
 //
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file or at
 // https://developers.google.com/open-source/licenses/bsd

 #include "upb/reflection/internal/enum_def.h"

 #include <stddef.h>
 #include <stdint.h>
 #include <string.h>

 #include "upb/base/status.h"
 #include "upb/base/string_view.h"
 #include "upb/hash/common.h"
 #include "upb/hash/int_table.h"
 #include "upb/hash/str_table.h"
 #include "upb/mem/arena.h"
 #include "upb/mini_descriptor/decode.h"
 #include "upb/mini_descriptor/internal/encode.h"
 #include "upb/mini_table/enum.h"
 #include "upb/mini_table/file.h"
 #include "upb/reflection/def.h"
 #include "upb/reflection/def_type.h"
 #include "upb/reflection/internal/def_builder.h"
 #include "upb/reflection/internal/desc_state.h"
 #include "upb/reflection/internal/enum_reserved_range.h"
 #include "upb/reflection/internal/enum_value_def.h"
 #include "upb/reflection/internal/file_def.h"
 #include "upb/reflection/internal/strdup2.h"

 // Must be last.
 #include "upb/port/def.inc"

 struct upb_EnumDef {
   const UPB_DESC(EnumOptions*) opts;
   const UPB_DESC(FeatureSet*) resolved_features;
   const upb_MiniTableEnum* layout;  // Only for proto2.
   const upb_FileDef* file;
   const upb_MessageDef* containing_type;  // Could be merged with "file".
   const char* full_name;
   upb_strtable ntoi;
   upb_inttable iton;
   const upb_EnumValueDef* values;
   const upb_EnumReservedRange* res_ranges;
   const upb_StringView* res_names;
   int value_count;
   int res_range_count;
   int res_name_count;
   int32_t defaultval;
   bool is_sorted;  // Whether all of the values are defined in ascending order.
 #if UINTPTR_MAX == 0xffffffff
   uint32_t padding;  // Increase size to a multiple of 8.
 #endif
 };

 upb_EnumDef* _upb_EnumDef_At(const upb_EnumDef* e, int i) {
   return (upb_EnumDef*)&e[i];
 }

 const upb_MiniTableEnum* _upb_EnumDef_MiniTable(const upb_EnumDef* e) {
   return e->layout;
 }

 bool _upb_EnumDef_Insert(upb_EnumDef* e, upb_EnumValueDef* v, upb_Arena* a) {
   const char* name = upb_EnumValueDef_Name(v);
   const upb_value val = upb_value_constptr(v);
   bool ok = upb_strtable_insert(&e->ntoi, name, strlen(name), val, a);
   if (!ok) return false;

   // Multiple enumerators can have the same number, first one wins.
   const int number = upb_EnumValueDef_Number(v);
   if (!upb_inttable_lookup(&e->iton, number, NULL)) {
     return upb_inttable_insert(&e->iton, number, val, a);
   }
   return true;
 }

 const UPB_DESC(EnumOptions) * upb_EnumDef_Options(const upb_EnumDef* e) {
   return e->opts;
 }

 bool upb_EnumDef_HasOptions(const upb_EnumDef* e) {
   return e->opts != (void*)kUpbDefOptDefault;
 }

 const UPB_DESC(FeatureSet) *
     upb_EnumDef_ResolvedFeatures(const upb_EnumDef* e) {
   return e->resolved_features;
 }

 const char* upb_EnumDef_FullName(const upb_EnumDef* e) { return e->full_name; }

 const char* upb_EnumDef_Name(const upb_EnumDef* e) {
   return _upb_DefBuilder_FullToShort(e->full_name);
 }

 const upb_FileDef* upb_EnumDef_File(const upb_EnumDef* e) { return e->file; }

 const upb_MessageDef* upb_EnumDef_ContainingType(const upb_EnumDef* e) {
   return e->containing_type;
 }

 int32_t upb_EnumDef_Default(const upb_EnumDef* e) {
   UPB_ASSERT(upb_EnumDef_FindValueByNumber(e, e->defaultval));
   return e->defaultval;
 }

 int upb_EnumDef_ReservedRangeCount(const upb_EnumDef* e) {
   return e->res_range_count;
 }

 const upb_EnumReservedRange* upb_EnumDef_ReservedRange(const upb_EnumDef* e,
                                                        int i) {
   UPB_ASSERT(0 <= i && i < e->res_range_count);
   return _upb_EnumReservedRange_At(e->res_ranges, i);
 }

 int upb_EnumDef_ReservedNameCount(const upb_EnumDef* e) {
   return e->res_name_count;
 }

 upb_StringView upb_EnumDef_ReservedName(const upb_EnumDef* e, int i) {
   UPB_ASSERT(0 <= i && i < e->res_name_count);
   return e->res_names[i];
 }

 int upb_EnumDef_ValueCount(const upb_EnumDef* e) { return e->value_count; }

 const upb_EnumValueDef* upb_EnumDef_FindValueByName(const upb_EnumDef* e,
                                                     const char* name) {
   return upb_EnumDef_FindValueByNameWithSize(e, name, strlen(name));
 }

 const upb_EnumValueDef* upb_EnumDef_FindValueByNameWithSize(
     const upb_EnumDef* e, const char* name, size_t size) {
   upb_value v;
   return upb_strtable_lookup2(&e->ntoi, name, size, &v)
              ? upb_value_getconstptr(v)
              : NULL;
 }

 const upb_EnumValueDef* upb_EnumDef_FindValueByNumber(const upb_EnumDef* e,
                                                       int32_t num) {
   upb_value v;
   return upb_inttable_lookup(&e->iton, num, &v) ? upb_value_getconstptr(v)
                                                 : NULL;
 }

 bool upb_EnumDef_CheckNumber(const upb_EnumDef* e, int32_t num) {
   // We could use upb_EnumDef_FindValueByNumber(e, num) != NULL, but we expect
   // this to be faster (especially for small numbers).
   return upb_MiniTableEnum_CheckValue(e->layout, num);
 }

 const upb_EnumValueDef* upb_EnumDef_Value(const upb_EnumDef* e, int i) {
   UPB_ASSERT(0 <= i && i < e->value_count);
   return _upb_EnumValueDef_At(e->values, i);
 }

 bool upb_EnumDef_IsClosed(const upb_EnumDef* e) {
   if (UPB_TREAT_CLOSED_ENUMS_LIKE_OPEN) return false;
   return upb_EnumDef_IsSpecifiedAsClosed(e);
 }

 bool upb_EnumDef_IsSpecifiedAsClosed(const upb_EnumDef* e) {
   return UPB_DESC(FeatureSet_enum_type)(e->resolved_features) ==
          UPB_DESC(FeatureSet_CLOSED);
 }

 bool upb_EnumDef_MiniDescriptorEncode(const upb_EnumDef* e, upb_Arena* a,
                                       upb_StringView* out) {
   upb_DescState s;
   _upb_DescState_Init(&s);

   const upb_EnumValueDef** sorted = NULL;
   if (!e->is_sorted) {
     sorted = _upb_EnumValueDefs_Sorted(e->values, e->value_count, a);
     if (!sorted) return false;
   }

   if (!_upb_DescState_Grow(&s, a)) return false;
   s.ptr = upb_MtDataEncoder_StartEnum(&s.e, s.ptr);

   // Duplicate values are allowed but we only encode each value once.
   uint32_t previous = 0;

   for (int i = 0; i < e->value_count; i++) {
     const uint32_t current =
         upb_EnumValueDef_Number(sorted ? sorted[i] : upb_EnumDef_Value(e, i));
     if (i != 0 && previous == current) continue;

     if (!_upb_DescState_Grow(&s, a)) return false;
     s.ptr = upb_MtDataEncoder_PutEnumValue(&s.e, s.ptr, current);
     previous = current;
   }

   if (!_upb_DescState_Grow(&s, a)) return false;
   s.ptr = upb_MtDataEncoder_EndEnum(&s.e, s.ptr);

   // There will always be room for this '\0' in the encoder buffer because
   // kUpb_MtDataEncoder_MinSize is overkill for upb_MtDataEncoder_EndEnum().
   UPB_ASSERT(s.ptr < s.buf + s.bufsize);
   *s.ptr = '\0';

   out->data = s.buf;
   out->size = s.ptr - s.buf;
   return true;
 }

 static upb_MiniTableEnum* create_enumlayout(upb_DefBuilder* ctx,
                                             const upb_EnumDef* e) {
   upb_StringView sv;
   bool ok = upb_EnumDef_MiniDescriptorEncode(e, ctx->tmp_arena, &sv);
   if (!ok) _upb_DefBuilder_Errf(ctx, "OOM while building enum MiniDescriptor");

   upb_Status status;
   upb_MiniTableEnum* layout =
       upb_MiniTableEnum_Build(sv.data, sv.size, ctx->arena, &status);
   if (!layout)
     _upb_DefBuilder_Errf(ctx, "Error building enum MiniTable: %s", status.msg);
   return layout;
 }

 static upb_StringView* _upb_EnumReservedNames_New(
     upb_DefBuilder* ctx, int n, const upb_StringView* protos) {
   upb_StringView* sv = _upb_DefBuilder_Alloc(ctx, sizeof(upb_StringView) * n);
   for (int i = 0; i < n; i++) {
     sv[i].data =
         upb_strdup2(protos[i].data, protos[i].size, _upb_DefBuilder_Arena(ctx));
     sv[i].size = protos[i].size;
   }
   return sv;
 }

 static void create_enumdef(upb_DefBuilder* ctx, const char* prefix,
                            const UPB_DESC(EnumDescriptorProto) * enum_proto,
                            const UPB_DESC(FeatureSet*) parent_features,
                            upb_EnumDef* e) {
   const UPB_DESC(EnumValueDescriptorProto)* const* values;
   const UPB_DESC(EnumDescriptorProto_EnumReservedRange)* const* res_ranges;
   const upb_StringView* res_names;
   upb_StringView name;
   size_t n_value, n_res_range, n_res_name;

   UPB_DEF_SET_OPTIONS(e->opts, EnumDescriptorProto, EnumOptions, enum_proto);
   e->resolved_features = _upb_DefBuilder_ResolveFeatures(
       ctx, parent_features, UPB_DESC(EnumOptions_features)(e->opts));

   // Must happen before _upb_DefBuilder_Add()
   e->file = _upb_DefBuilder_File(ctx);

   name = UPB_DESC(EnumDescriptorProto_name)(enum_proto);

   e->full_name = _upb_DefBuilder_MakeFullName(ctx, prefix, name);
   _upb_DefBuilder_Add(ctx, e->full_name,
                       _upb_DefType_Pack(e, UPB_DEFTYPE_ENUM));

   values = UPB_DESC(EnumDescriptorProto_value)(enum_proto, &n_value);

   bool ok = upb_strtable_init(&e->ntoi, n_value, ctx->arena);
   if (!ok) _upb_DefBuilder_OomErr(ctx);

   ok = upb_inttable_init(&e->iton, ctx->arena);
   if (!ok) _upb_DefBuilder_OomErr(ctx);

   e->defaultval = 0;
   e->value_count = n_value;
   e->values = _upb_EnumValueDefs_New(ctx, prefix, n_value, values,
                                      e->resolved_features, e, &e->is_sorted);

   if (n_value == 0) {
     _upb_DefBuilder_Errf(ctx, "enums must contain at least one value (%s)",
                          e->full_name);
   }

   res_ranges =
       UPB_DESC(EnumDescriptorProto_reserved_range)(enum_proto, &n_res_range);
   e->res_range_count = n_res_range;
   e->res_ranges = _upb_EnumReservedRanges_New(ctx, n_res_range, res_ranges, e);

   res_names =
       UPB_DESC(EnumDescriptorProto_reserved_name)(enum_proto, &n_res_name);
   e->res_name_count = n_res_name;
   e->res_names = _upb_EnumReservedNames_New(ctx, n_res_name, res_names);

   upb_inttable_compact(&e->iton, ctx->arena);

   if (upb_EnumDef_IsClosed(e)) {
     if (ctx->layout) {
       e->layout = upb_MiniTableFile_Enum(ctx->layout, ctx->enum_count++);
     } else {
       e->layout = create_enumlayout(ctx, e);
     }
   } else {
     e->layout = NULL;
   }
 }

 upb_EnumDef* _upb_EnumDefs_New(upb_DefBuilder* ctx, int n,
                                const UPB_DESC(EnumDescriptorProto*)
                                    const* protos,
                                const UPB_DESC(FeatureSet*) parent_features,
                                const upb_MessageDef* containing_type) {
   _upb_DefType_CheckPadding(sizeof(upb_EnumDef));

   // If a containing type is defined then get the full name from that.
   // Otherwise use the package name from the file def.
   const char* name = containing_type ? upb_MessageDef_FullName(containing_type)
                                      : _upb_FileDef_RawPackage(ctx->file);

   upb_EnumDef* e = _upb_DefBuilder_Alloc(ctx, sizeof(upb_EnumDef) * n);
   for (int i = 0; i < n; i++) {
     create_enumdef(ctx, name, protos[i], parent_features, &e[i]);
     e[i].containing_type = containing_type;
   }
   return e;
 }
	// Protocol Buffers - Google's data interchange format
	// Copyright 2023 Google LLC. All rights reserved.
	//
	// Use of this source code is governed by a BSD-style
	// license that can be found in the LICENSE file or at
	// https://developers.google.com/open-source/licenses/bsd

	#include "upb/reflection/internal/enum_def.h"

	#include <stddef.h>
	#include <stdint.h>
	#include <string.h>

	#include "upb/base/status.h"
	#include "upb/base/string_view.h"
	#include "upb/hash/common.h"
	#include "upb/hash/int_table.h"
	#include "upb/hash/str_table.h"
	#include "upb/mem/arena.h"
	#include "upb/mini_descriptor/decode.h"
	#include "upb/mini_descriptor/internal/encode.h"
	#include "upb/mini_table/enum.h"
	#include "upb/mini_table/file.h"
	#include "upb/reflection/def.h"
	#include "upb/reflection/def_type.h"
	#include "upb/reflection/internal/def_builder.h"
	#include "upb/reflection/internal/desc_state.h"
	#include "upb/reflection/internal/enum_reserved_range.h"
	#include "upb/reflection/internal/enum_value_def.h"
	#include "upb/reflection/internal/file_def.h"
	#include "upb/reflection/internal/strdup2.h"

	// Must be last.
	#include "upb/port/def.inc"

	struct upb_EnumDef {
	const UPB_DESC(EnumOptions*) opts;
	const UPB_DESC(FeatureSet*) resolved_features;
	const upb_MiniTableEnum* layout; // Only for proto2.
	const upb_FileDef* file;
	const upb_MessageDef* containing_type; // Could be merged with "file".
	const char* full_name;
	upb_strtable ntoi;
	upb_inttable iton;
	const upb_EnumValueDef* values;
	const upb_EnumReservedRange* res_ranges;
	const upb_StringView* res_names;
	int value_count;
	int res_range_count;
	int res_name_count;
	int32_t defaultval;
	bool is_sorted; // Whether all of the values are defined in ascending order.
	#if UINTPTR_MAX == 0xffffffff
	uint32_t padding; // Increase size to a multiple of 8.
	#endif
	};

	upb_EnumDef* _upb_EnumDef_At(const upb_EnumDef* e, int i) {
	return (upb_EnumDef*)&e[i];
	}

	const upb_MiniTableEnum* _upb_EnumDef_MiniTable(const upb_EnumDef* e) {
	return e->layout;
	}

	bool _upb_EnumDef_Insert(upb_EnumDef* e, upb_EnumValueDef* v, upb_Arena* a) {
	const char* name = upb_EnumValueDef_Name(v);
	const upb_value val = upb_value_constptr(v);
	bool ok = upb_strtable_insert(&e->ntoi, name, strlen(name), val, a);
	if (!ok) return false;

	// Multiple enumerators can have the same number, first one wins.
	const int number = upb_EnumValueDef_Number(v);
	if (!upb_inttable_lookup(&e->iton, number, NULL)) {
	return upb_inttable_insert(&e->iton, number, val, a);
	}
	return true;
	}

	const UPB_DESC(EnumOptions) * upb_EnumDef_Options(const upb_EnumDef* e) {
	return e->opts;
	}

	bool upb_EnumDef_HasOptions(const upb_EnumDef* e) {
	return e->opts != (void*)kUpbDefOptDefault;
	}

	const UPB_DESC(FeatureSet) *
	upb_EnumDef_ResolvedFeatures(const upb_EnumDef* e) {
	return e->resolved_features;
	}

	const char* upb_EnumDef_FullName(const upb_EnumDef* e) { return e->full_name; }

	const char* upb_EnumDef_Name(const upb_EnumDef* e) {
	return _upb_DefBuilder_FullToShort(e->full_name);
	}

	const upb_FileDef* upb_EnumDef_File(const upb_EnumDef* e) { return e->file; }

	const upb_MessageDef* upb_EnumDef_ContainingType(const upb_EnumDef* e) {
	return e->containing_type;
	}

	int32_t upb_EnumDef_Default(const upb_EnumDef* e) {
	UPB_ASSERT(upb_EnumDef_FindValueByNumber(e, e->defaultval));
	return e->defaultval;
	}

	int upb_EnumDef_ReservedRangeCount(const upb_EnumDef* e) {
	return e->res_range_count;
	}

	const upb_EnumReservedRange* upb_EnumDef_ReservedRange(const upb_EnumDef* e,
	int i) {
	UPB_ASSERT(0 <= i && i < e->res_range_count);
	return _upb_EnumReservedRange_At(e->res_ranges, i);
	}

	int upb_EnumDef_ReservedNameCount(const upb_EnumDef* e) {
	return e->res_name_count;
	}

	upb_StringView upb_EnumDef_ReservedName(const upb_EnumDef* e, int i) {
	UPB_ASSERT(0 <= i && i < e->res_name_count);
	return e->res_names[i];
	}

	int upb_EnumDef_ValueCount(const upb_EnumDef* e) { return e->value_count; }

	const upb_EnumValueDef* upb_EnumDef_FindValueByName(const upb_EnumDef* e,
	const char* name) {
	return upb_EnumDef_FindValueByNameWithSize(e, name, strlen(name));
	}

	const upb_EnumValueDef* upb_EnumDef_FindValueByNameWithSize(
	const upb_EnumDef* e, const char* name, size_t size) {
	upb_value v;
	return upb_strtable_lookup2(&e->ntoi, name, size, &v)
	? upb_value_getconstptr(v)
	: NULL;
	}

	const upb_EnumValueDef* upb_EnumDef_FindValueByNumber(const upb_EnumDef* e,
	int32_t num) {
	upb_value v;
	return upb_inttable_lookup(&e->iton, num, &v) ? upb_value_getconstptr(v)
	: NULL;
	}

	bool upb_EnumDef_CheckNumber(const upb_EnumDef* e, int32_t num) {
	// We could use upb_EnumDef_FindValueByNumber(e, num) != NULL, but we expect
	// this to be faster (especially for small numbers).
	return upb_MiniTableEnum_CheckValue(e->layout, num);
	}

	const upb_EnumValueDef* upb_EnumDef_Value(const upb_EnumDef* e, int i) {
	UPB_ASSERT(0 <= i && i < e->value_count);
	return _upb_EnumValueDef_At(e->values, i);
	}

	bool upb_EnumDef_IsClosed(const upb_EnumDef* e) {
	if (UPB_TREAT_CLOSED_ENUMS_LIKE_OPEN) return false;
	return upb_EnumDef_IsSpecifiedAsClosed(e);
	}

	bool upb_EnumDef_IsSpecifiedAsClosed(const upb_EnumDef* e) {
	return UPB_DESC(FeatureSet_enum_type)(e->resolved_features) ==
	UPB_DESC(FeatureSet_CLOSED);
	}

	bool upb_EnumDef_MiniDescriptorEncode(const upb_EnumDef* e, upb_Arena* a,
	upb_StringView* out) {
	upb_DescState s;
	_upb_DescState_Init(&s);

	const upb_EnumValueDef** sorted = NULL;
	if (!e->is_sorted) {
	sorted = _upb_EnumValueDefs_Sorted(e->values, e->value_count, a);
	if (!sorted) return false;
	}

	if (!_upb_DescState_Grow(&s, a)) return false;
	s.ptr = upb_MtDataEncoder_StartEnum(&s.e, s.ptr);

	// Duplicate values are allowed but we only encode each value once.
	uint32_t previous = 0;

	for (int i = 0; i < e->value_count; i++) {
	const uint32_t current =
	upb_EnumValueDef_Number(sorted ? sorted[i] : upb_EnumDef_Value(e, i));
	if (i != 0 && previous == current) continue;

	if (!_upb_DescState_Grow(&s, a)) return false;
	s.ptr = upb_MtDataEncoder_PutEnumValue(&s.e, s.ptr, current);
	previous = current;
	}

	if (!_upb_DescState_Grow(&s, a)) return false;
	s.ptr = upb_MtDataEncoder_EndEnum(&s.e, s.ptr);

	// There will always be room for this '\0' in the encoder buffer because
	// kUpb_MtDataEncoder_MinSize is overkill for upb_MtDataEncoder_EndEnum().
	UPB_ASSERT(s.ptr < s.buf + s.bufsize);
	*s.ptr = '\0';

	out->data = s.buf;
	out->size = s.ptr - s.buf;
	return true;
	}

	static upb_MiniTableEnum* create_enumlayout(upb_DefBuilder* ctx,
	const upb_EnumDef* e) {
	upb_StringView sv;
	bool ok = upb_EnumDef_MiniDescriptorEncode(e, ctx->tmp_arena, &sv);
	if (!ok) _upb_DefBuilder_Errf(ctx, "OOM while building enum MiniDescriptor");

	upb_Status status;
	upb_MiniTableEnum* layout =
	upb_MiniTableEnum_Build(sv.data, sv.size, ctx->arena, &status);
	if (!layout)
	_upb_DefBuilder_Errf(ctx, "Error building enum MiniTable: %s", status.msg);
	return layout;
	}

	static upb_StringView* _upb_EnumReservedNames_New(
	upb_DefBuilder* ctx, int n, const upb_StringView* protos) {
	upb_StringView* sv = _upb_DefBuilder_Alloc(ctx, sizeof(upb_StringView) * n);
	for (int i = 0; i < n; i++) {
	sv[i].data =
	upb_strdup2(protos[i].data, protos[i].size, _upb_DefBuilder_Arena(ctx));
	sv[i].size = protos[i].size;
	}
	return sv;
	}

	static void create_enumdef(upb_DefBuilder* ctx, const char* prefix,
	const UPB_DESC(EnumDescriptorProto) * enum_proto,
	const UPB_DESC(FeatureSet*) parent_features,
	upb_EnumDef* e) {
	const UPB_DESC(EnumValueDescriptorProto)* const* values;
	const UPB_DESC(EnumDescriptorProto_EnumReservedRange)* const* res_ranges;
	const upb_StringView* res_names;
	upb_StringView name;
	size_t n_value, n_res_range, n_res_name;

	UPB_DEF_SET_OPTIONS(e->opts, EnumDescriptorProto, EnumOptions, enum_proto);
	e->resolved_features = _upb_DefBuilder_ResolveFeatures(
	ctx, parent_features, UPB_DESC(EnumOptions_features)(e->opts));

	// Must happen before _upb_DefBuilder_Add()
	e->file = _upb_DefBuilder_File(ctx);

	name = UPB_DESC(EnumDescriptorProto_name)(enum_proto);

	e->full_name = _upb_DefBuilder_MakeFullName(ctx, prefix, name);
	_upb_DefBuilder_Add(ctx, e->full_name,
	_upb_DefType_Pack(e, UPB_DEFTYPE_ENUM));

	values = UPB_DESC(EnumDescriptorProto_value)(enum_proto, &n_value);

	bool ok = upb_strtable_init(&e->ntoi, n_value, ctx->arena);
	if (!ok) _upb_DefBuilder_OomErr(ctx);

	ok = upb_inttable_init(&e->iton, ctx->arena);
	if (!ok) _upb_DefBuilder_OomErr(ctx);

	e->defaultval = 0;
	e->value_count = n_value;
	e->values = _upb_EnumValueDefs_New(ctx, prefix, n_value, values,
	e->resolved_features, e, &e->is_sorted);

	if (n_value == 0) {
	_upb_DefBuilder_Errf(ctx, "enums must contain at least one value (%s)",
	e->full_name);
	}

	res_ranges =
	UPB_DESC(EnumDescriptorProto_reserved_range)(enum_proto, &n_res_range);
	e->res_range_count = n_res_range;
	e->res_ranges = _upb_EnumReservedRanges_New(ctx, n_res_range, res_ranges, e);

	res_names =
	UPB_DESC(EnumDescriptorProto_reserved_name)(enum_proto, &n_res_name);
	e->res_name_count = n_res_name;
	e->res_names = _upb_EnumReservedNames_New(ctx, n_res_name, res_names);

	upb_inttable_compact(&e->iton, ctx->arena);

	if (upb_EnumDef_IsClosed(e)) {
	if (ctx->layout) {
	e->layout = upb_MiniTableFile_Enum(ctx->layout, ctx->enum_count++);
	} else {
	e->layout = create_enumlayout(ctx, e);
	}
	} else {
	e->layout = NULL;
	}
	}

	upb_EnumDef* _upb_EnumDefs_New(upb_DefBuilder* ctx, int n,
	const UPB_DESC(EnumDescriptorProto*)
	const* protos,
	const UPB_DESC(FeatureSet*) parent_features,
	const upb_MessageDef* containing_type) {
	_upb_DefType_CheckPadding(sizeof(upb_EnumDef));

	// If a containing type is defined then get the full name from that.
	// Otherwise use the package name from the file def.
	const char* name = containing_type ? upb_MessageDef_FullName(containing_type)
	: _upb_FileDef_RawPackage(ctx->file);

	upb_EnumDef* e = _upb_DefBuilder_Alloc(ctx, sizeof(upb_EnumDef) * n);
	for (int i = 0; i < n; i++) {
	create_enumdef(ctx, name, protos[i], parent_features, &e[i]);
	e[i].containing_type = containing_type;
	}
	return e;
	}