Class: Protobuf::Field::VarintField

Inherits:

BaseField

• Object
• BaseField
• Protobuf::Field::VarintField

Defined in:

lib/protobuf/message/field.rb

Direct Known Subclasses

BoolField, EnumField, IntegerField, SignedIntegerField, Uint32Field, Uint64Field

Constant Summary

INT32_MAX =

2**31 - 1

INT32_MIN =

-2**31

INT64_MAX =

2**63 - 1

INT64_MIN =

-2**63

UINT32_MAX =

2**32 - 1

UINT64_MAX =

2**64 - 1

Instance Attribute Summary

Attributes inherited from BaseField

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

Class Method Summary

• .decode(bytes) ⇒ Object
• .default ⇒ Object
• .encode(value) ⇒ Object

Instance Method Summary

• #acceptable?(val) ⇒ Boolean
• #decode(bytes) ⇒ Object
• #encode(value) ⇒ Object
• #wire_type ⇒ Object

Methods inherited from BaseField

#clear, #default_value, #descriptor, descriptor, #error_message, #get, #initialize, #initialized?, #max, #merge, #merge_array, #merge_value, #min, #optional?, #ready?, #repeated?, #required?, #set, #to_s, #typed_default_value

Constructor Details

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

Class Method Details

.decode(bytes) ⇒ Object

# File 'lib/protobuf/message/field.rb', line 322

def decode(bytes)
  value = 0
  bytes.each_with_index do |byte, index|
    value |= byte << (7 * index)
  end
  value
end

.default ⇒ Object

# File 'lib/protobuf/message/field.rb', line 320

def default; 0 end

.encode(value) ⇒ Object

Raises:

• (RangeError)

# File 'lib/protobuf/message/field.rb', line 330

def encode(value)
  raise RangeError.new(value) if value < 0
  return [value].pack('C') if value < 128
  bytes = []
  until value == 0
    bytes << (0x80 | (value & 0x7f))
    value >>= 7
  end
  bytes[-1] &= 0x7f
  bytes.pack('C*')
end

Instance Method Details

#acceptable?(val) ⇒ Boolean

Returns:

• (Boolean)

Raises:

• (TypeError)

# File 'lib/protobuf/message/field.rb', line 355

def acceptable?(val)
  raise TypeError.new(val.class.name) unless val.is_a? Integer
  raise RangeError.new(val) if val < min or max < val
  true
end

#decode(bytes) ⇒ Object

# File 'lib/protobuf/message/field.rb', line 347

def decode(bytes)
  self.class.decode(bytes)
end

#encode(value) ⇒ Object

# File 'lib/protobuf/message/field.rb', line 351

def encode(value)
  self.class.encode(value)
end

#wire_type ⇒ Object

# File 'lib/protobuf/message/field.rb', line 343

def wire_type
  Protobuf::WireType::VARINT
end