Class: TPPlus::Nodes::OperatorNode

Inherits:
Object
  • Object
show all
Defined in:
lib/tp_plus/nodes/operator_node.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(string) ⇒ OperatorNode

Returns a new instance of OperatorNode.



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# File 'lib/tp_plus/nodes/operator_node.rb', line 5

def initialize(string)
  @string = string
end

Instance Attribute Details

#string ⇒ Object (readonly)

Returns the value of attribute string.



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# File 'lib/tp_plus/nodes/operator_node.rb', line 4

def string
  @string
end

Instance Method Details

#bang? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/tp_plus/nodes/operator_node.rb', line 9

def bang?
  @string == "!"
end

#boolean? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/tp_plus/nodes/operator_node.rb', line 22

def boolean?
  case @string
  when "&&", "||", "!"#, "==", "<>", ">", ">=", "<", "<="
    true
  else
    false
  end
end

#eval(context, options = {}) ⇒ Object 



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# File 'lib/tp_plus/nodes/operator_node.rb', line 31

def eval(context,options={})
  if options[:opposite]
    case @string
    when "=="
      "<>"
    when "!=", "<>"
      "="
    when ">"
      "<="
    when "<"
      ">="
    when ">="
      "<"
    when "<="
      ">"
    when "!"
      ""
    when "||"
      " AND "
    when "&&"
      " OR "
    when "DIV"
      " MOD "
    else
      "#{@string}"
    end
  else
    case @string
    when "=="
      "="
    when "!="
      "<>"
    when "&&"
      " AND "
    when "||"
      " OR "
    when "%"
      " MOD "
    when "DIV"
      " DIV "
    else
      "#{@string}"
    end
  end
end

#requires_mixed_logic?(context) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/tp_plus/nodes/operator_node.rb', line 13

def requires_mixed_logic?(context)
  case @string
  when "&&", "||", "!"
    true
  else
    false
  end
end