Class: Ruleby::Core::ObjectPattern

Inherits:
Pattern
  • Object
show all
Defined in:
lib/core/patterns.rb

Overview

This class represents a pattern that is looking for the existence of some object. It contains a list of ‘atoms’ that represent the properties of the class that we are looking for.

Direct Known Subclasses

InheritsPattern, InitialFactPattern, NotPattern

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(head, atoms) ⇒ ObjectPattern

Returns a new instance of ObjectPattern.



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# File 'lib/core/patterns.rb', line 24

def initialize(head, atoms)
  @atoms = [head] + atoms     
end

Instance Attribute Details

#atoms ⇒ Object (readonly)

Returns the value of attribute atoms.



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# File 'lib/core/patterns.rb', line 22

def atoms
  @atoms
end

Instance Method Details

#==(pattern) ⇒ Object 



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# File 'lib/core/patterns.rb', line 32

def ==(pattern)
  if pattern.class == self.class
    atoms = pattern.atoms
    if(@atoms.size == atoms.size)
      (0..@atoms.size).each do |i|
        if !(@atoms[i] == atoms[i])
          return false
        end
      end
      return true
    end
  end
  return false
end

#head ⇒ Object 



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# File 'lib/core/patterns.rb', line 28

def head
  @atoms[0]
end

#to_s ⇒ Object 



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# File 'lib/core/patterns.rb', line 47

def to_s
  return '(' + @atoms.join('|') + ')'
end