Class: PacketGen::Header::Base::Binding Private

Inherits:
Struct
  • Object
show all
Defined in:
lib/packetgen/header/base.rb,
lib/packetgen/header/base.rb

This class is part of a private API. You should avoid using this class if possible, as it may be removed or be changed in the future.

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#key ⇒ Symbol

attribute name in a header

Returns:

  • (Symbol) 


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# File 'lib/packetgen/header/base.rb', line 5

def key
  @key
end

#value ⇒ Integer, ...

Value associated with the attribute to create a binding

Returns:

  • (Integer, String, Proc) 


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# File 'lib/packetgen/header/base.rb', line 8

def value
  @value
end

Instance Method Details

#check?(fields) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Check fields responds to binding

Parameters:

  • fields (BinStruct::Struct)

Returns:

  • (Boolean) 


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# File 'lib/packetgen/header/base.rb', line 38

def check?(fields)
  case self[:value]
  when Proc
    self[:value].call(fields.send(self[:key]))
  else
    fields.send(self[:key]) == self[:value]
  end
end

#set(fields) ⇒ void

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

This method returns an undefined value.

Set fields field to binding value

Parameters:

  • fields (BinStruct::Struct) 


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# File 'lib/packetgen/header/base.rb', line 50

def set(fields)
  case self[:value]
  when Proc
    fields.send(:"#{self[:key]}=", self[:value].call(nil))
  else
    attr = if self[:key].to_s.end_with?('?')
             self[:key].to_s[0..-2]
           else
             self[:key]
           end
    fields.send(:"#{attr}=", self[:value])
  end
end