Module: SuperatorMixin

Defined in:
lib/superators/macro.rb

Constant Summary collapse

BINARY_RUBY_OPERATORS = 
%w"** * / % + - << >> & | ^ <=> >= <= < > === == =~"
UNARY_RUBY_OPERATORS = 
%w"-@ ~@ +@"
BINARY_OPERATOR_PATTERN = 
BINARY_RUBY_OPERATORS.map { |x| Regexp.escape(x) }.join "|"
UNARY_OPERATOR_PATTERN = 
UNARY_RUBY_OPERATORS.map { |x| Regexp.escape(x) }.join "|"
UNARY_OPERATOR_PATTERN_WITHOUT_AT_SIGN = 
UNARY_OPERATOR_PATTERN.map { |x| x.gsub('@', '') }
VALID_SUPERATOR = 
/^(#{BINARY_OPERATOR_PATTERN})(#{UNARY_OPERATOR_PATTERN_WITHOUT_AT_SIGN})+$/

Instance Method Summary collapse

Instance Method Details

#defined_superators ⇒ Object 



24
25
26
 
# File 'lib/superators/macro.rb', line 24

def defined_superators
  methods.grep(/superator_definition_/).map { |m| superator_decode(m) }
end

#respond_to_superator?(sup) ⇒ Boolean

Returns:

  • (Boolean) 


20
21
22
 
# File 'lib/superators/macro.rb', line 20

def respond_to_superator?(sup)
  respond_to? superator_definition_name_for(sup)
end

#superator_send(sup, operand) ⇒ Object 



12
13
14
15
16
17
18
 
# File 'lib/superators/macro.rb', line 12

def superator_send(sup, operand)
  if respond_to_superator? sup
    __send__ superator_definition_name_for(sup), operand
  else
    raise NoMethodError, "Superator #{sup} has not been defined on #{self.class}"
  end
end

#undef_superator(sup) ⇒ Object 



66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
 
# File 'lib/superators/macro.rb', line 66

def undef_superator(sup)
  if respond_to_superator?(sup)
    real_operator = real_operator_from_superator sup
    real_operator_alias = superator_alias_for sup
    
    (class << self; self; end).instance_eval do
      undef_method superator_definition_name_for(sup)
      if respond_to? real_operator_alias
        alias_method real_operator, real_operator_alias if defined_superators.empty?
      else
        undef_method real_operator
      end
    end
  else
    raise NoMethodError, "undefined superator #{sup} for #{self.inspect}:#{self.class}"
  end
end