Class: Danica::Common

Inherits:
Object
  • Object
show all
Defined in:
lib/danica/common.rb,
lib/danica/common/class_methods.rb,
lib/danica/common/variables_builder.rb

Direct Known Subclasses

Function, Operator

Defined Under Namespace

Classes: VariablesBuilder

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#variables ⇒ Object

Returns the value of attribute variables.



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# File 'lib/danica/common.rb', line 6

def variables
  @variables
end

Class Method Details

.variables(*names) ⇒ Object 



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# File 'lib/danica/common/class_methods.rb', line 3

def variables(*names)
  VariablesBuilder.new(names, self).build
end

.variables_names ⇒ Object 



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# File 'lib/danica/common/class_methods.rb', line 7

def variables_names
  @variables_names ||= []
end

Instance Method Details

#calculate(*args) ⇒ Object 



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# File 'lib/danica/common.rb', line 12

def calculate(*args)
  vars_map = args.extract_options!
  vars_map = variables_value_hash.merge(vars_map)
  vars_map.each do |k, v|
    unless v && (v.is_a?(Fixnum) || v.valued?)
      vars_map[k] = args.shift
    end
  end

  self.class.new(vars_map).to_f
end

#to_f ⇒ Object 



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# File 'lib/danica/common.rb', line 8

def to_f
  raise 'Not IMplemented yet'
end

#to_gnu ⇒ Object 



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# File 'lib/danica/common.rb', line 30

def to_gnu
  Number.new(to_f).to_gnu
rescue Exception::NotDefined
  gnu_string
end

#to_tex ⇒ Object 



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# File 'lib/danica/common.rb', line 24

def to_tex
  Number.new(to_f).to_tex
rescue Exception::NotDefined
  tex_string
end

#valued? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/danica/common.rb', line 40

def valued?
  to_f.present?
rescue Exception::NotDefined
  false
end

#variables_hash ⇒ Object 



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# File 'lib/danica/common.rb', line 50

def variables_hash
  @variabels_map ||= (@variables || []).as_hash(self.class.variables_names)
end

#variables_value_hash ⇒ Object 



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# File 'lib/danica/common.rb', line 54

def variables_value_hash
  variables.map(&:value).as_hash(self.class.variables_names)
end