Class: Keisan::Tokens::LogicalOperator

Inherits:
Operator show all
Defined in:
lib/keisan/tokens/logical_operator.rb

Constant Summary collapse

LESS_THAN_OR_EQUAL_TO = 
/(?:\<\=)/
GREATER_THAN_OR_EQUAL_TO = 
/(?:\>\=)/
LESS_THAN = 
/(?:\<)/
GREATER_THAN = 
/(?:\>)/
AND = 
/(?:\&\&)/
OR = 
/(?:\|\|)/
EQUAL = 
/(?:\=\=)/
NOT_EQUAL = 
/(?:\!\=)/
NOT = 
/(?:\!+)/
REGEX = 
/(#{LESS_THAN_OR_EQUAL_TO}|#{GREATER_THAN_OR_EQUAL_TO}|#{LESS_THAN}|#{GREATER_THAN}|#{AND}|#{OR}|#{EQUAL}|#{NOT_EQUAL}|#{NOT})/

Instance Attribute Summary

Attributes inherited from Keisan::Token

#string

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Operator

#type

Methods inherited from Keisan::Token

#initialize, #regex, #type, type

Constructor Details

This class inherits a constructor from Keisan::Token

Class Method Details

.regex ⇒ Object 



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# File 'lib/keisan/tokens/logical_operator.rb', line 16

def self.regex
  REGEX
end

Instance Method Details

#operator_type ⇒ Object 



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# File 'lib/keisan/tokens/logical_operator.rb', line 20

def operator_type
  case string
  when LESS_THAN_OR_EQUAL_TO
    :<=
  when GREATER_THAN_OR_EQUAL_TO
    :>=
  when LESS_THAN
    :<
  when GREATER_THAN
    :>
  when AND
    :"&&"
  when OR
    :"||"
  when EQUAL
    :"=="
  when NOT_EQUAL
    :"!="
  when NOT
    string.count("!").even? ? :"!!" : :"!"
  end
end