protobuf/ruby/ext/google/protobuf_c/convert.h

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// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc.  All rights reserved.
// https://developers.google.com/protocol-buffers/
//
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//
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#ifndef RUBY_PROTOBUF_CONVERT_H_
#define RUBY_PROTOBUF_CONVERT_H_
 
#include <ruby/ruby.h>
 
#include "protobuf.h"
#include "ruby-upb.h"
 
// Converts |ruby_val| to a upb_msgval according to |type_info|.
//
// The |arena| parameter indicates the lifetime of the container where this
// value will be assigned. It is used as follows:
// - If type is string or bytes, the string data will be copied into |arena|.
// - If type is message, and we need to auto-construct a message due to implicit
//   conversions (eg. Time -> Google::Protobuf::Timestamp), the new message
//   will be created in |arena|.
// - If type is message and the Ruby value is a message instance, we will fuse
//   the message's arena into |arena|, to ensure that this message outlives the
//   container.
upb_msgval Convert_RubyToUpb(VALUE ruby_val, const char *name,
                             TypeInfo type_info, upb_arena *arena);
 
// Converts |upb_val| to a Ruby VALUE according to |type_info|. This may involve
// creating a Ruby wrapper object.
//
// The |arena| parameter indicates the arena that owns the lifetime of
// |upb_val|. Any Ruby wrapper object that is created will reference |arena|
// and ensure it outlives the wrapper.
VALUE Convert_UpbToRuby(upb_msgval upb_val, TypeInfo type_info, VALUE arena);
 
// Creates a deep copy of |msgval| in |arena|.
upb_msgval Msgval_DeepCopy(upb_msgval msgval, TypeInfo type_info,
                           upb_arena *arena);
 
// Returns true if |val1| and |val2| are equal. Their type is given by
// |type_info|.
bool Msgval_IsEqual(upb_msgval val1, upb_msgval val2, TypeInfo type_info);
 
// Returns a hash value for the given upb_msgval.
uint64_t Msgval_GetHash(upb_msgval val, TypeInfo type_info, uint64_t seed);
 
#endif  // RUBY_PROTOBUF_CONVERT_H_