Class: Protobuf::Field::SignedIntegerField

Inherits:
VarintField show all
Defined in:
lib/protobuf/message/field.rb

Overview

Base class for sint32 and sint64

Direct Known Subclasses

Sint32Field, Sint64Field

Constant Summary

Constants inherited from VarintField

VarintField::INT32_MAX, VarintField::INT32_MIN, VarintField::INT64_MAX, VarintField::INT64_MIN, VarintField::UINT32_MAX, VarintField::UINT64_MAX

Instance Attribute Summary

Attributes inherited from BaseField

#default, #default_value, #message_class, #name, #rule, #tag, #type

Instance Method Summary collapse

Methods inherited from VarintField

#acceptable?, decode, default, encode, #wire_type

Methods inherited from BaseField

#acceptable?, default, descriptor, #descriptor, #initialize, #initialized?, #max, #merge, #min, #optional?, #packed?, #ready?, #repeated?, #required?, #set, #to_s

Constructor Details

This class inherits a constructor from Protobuf::Field::BaseField

Instance Method Details

#decode(value) ⇒ Object 



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# File 'lib/protobuf/message/field.rb', line 448

def decode(value)
  if (value & 1).zero?
    value >> 1   # positive value
  else
    ~value >> 1  # negative value
  end
end

#encode(value) ⇒ Object 



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# File 'lib/protobuf/message/field.rb', line 456

def encode(value)
  if value >= 0
    VarintField.encode(value << 1)
  else
    VarintField.encode(~(value << 1))
  end
end