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// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. 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
#ifndef RUBY_PROTOBUF_DEFS_H_
#define RUBY_PROTOBUF_DEFS_H_
#include "protobuf.h"
#include "ruby-upb.h"
// -----------------------------------------------------------------------------
// TypeInfo
// -----------------------------------------------------------------------------
// This bundles a upb_CType and msgdef/enumdef when appropriate. This is
// convenient for functions that need type information but cannot necessarily
// assume a upb_FieldDef will be available.
//
// For example, Google::Protobuf::Map and Google::Protobuf::RepeatedField can
// be constructed with type information alone:
//
// # RepeatedField will internally store the type information in a TypeInfo.
// Google::Protobuf::RepeatedField.new(:message, FooMessage)
typedef struct {
upb_CType type;
union {
const upb_MessageDef* msgdef; // When type == kUpb_CType_Message
const upb_EnumDef* enumdef; // When type == kUpb_CType_Enum
} def;
} TypeInfo;
static inline TypeInfo TypeInfo_get(const upb_FieldDef* f) {
TypeInfo ret = {upb_FieldDef_CType(f), {NULL}};
switch (ret.type) {
case kUpb_CType_Message:
ret.def.msgdef = upb_FieldDef_MessageSubDef(f);
break;
case kUpb_CType_Enum:
ret.def.enumdef = upb_FieldDef_EnumSubDef(f);
break;
default:
break;
}
return ret;
}
TypeInfo TypeInfo_FromClass(int argc, VALUE* argv, int skip_arg,
VALUE* type_class, VALUE* init_arg);
static inline TypeInfo TypeInfo_from_type(upb_CType type) {
TypeInfo ret = {type};
assert(type != kUpb_CType_Message && type != kUpb_CType_Enum);
return ret;
}
// -----------------------------------------------------------------------------
// Other utilities
// -----------------------------------------------------------------------------
VALUE Descriptor_DefToClass(const upb_MessageDef* m);
// Returns the underlying msgdef, enumdef, or symtab (respectively) for the
// given Descriptor, EnumDescriptor, or DescriptorPool Ruby object.
const upb_EnumDef* EnumDescriptor_GetEnumDef(VALUE enum_desc_rb);
const upb_DefPool* DescriptorPool_GetSymtab(VALUE desc_pool_rb);
const upb_MessageDef* Descriptor_GetMsgDef(VALUE desc_rb);
// Returns a upb field type for the given Ruby symbol
// (eg. :float => kUpb_CType_Float).
upb_CType ruby_to_fieldtype(VALUE type);
// The singleton generated pool (a DescriptorPool object).
extern VALUE generated_pool;
// Call at startup to register all types in this module.
void Defs_register(VALUE module);
#endif // RUBY_PROTOBUF_DEFS_H_
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