Class: LV

Inherits:
Object show all
Includes:
Rulp::Bounds, Rulp::Initializers
Defined in:
lib/rulp/lv.rb

Overview

An LP Variable. Used as arguments in LP Expressions. The subtypes BV and IV represent Binary and Integer variables. These are constructed dynamically by using the special Capitalised variable declaration syntax.

Direct Known Subclasses

BV, IV

Constant Summary

Constants included from Rulp::Bounds

Rulp::Bounds::DIRS, Rulp::Bounds::DIRS_REVERSED

Instance Attribute Summary collapse

Attributes included from Rulp::Bounds

#const

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Rulp::Initializers

included, #initialize, #to_s

Methods included from Rulp::Bounds

#<, #<=, #==, #>, #>=, #bounds, #coerce, #coerced?, #nocoerce, #relative_constraint

Instance Attribute Details

#args ⇒ Object (readonly)

Returns the value of attribute args.



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# File 'lib/rulp/lv.rb', line 7

def args
  @args
end

#gt ⇒ Object

Returns the value of attribute gt.



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# File 'lib/rulp/lv.rb', line 8

def gt
  @gt
end

#gte ⇒ Object

Returns the value of attribute gte.



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# File 'lib/rulp/lv.rb', line 8

def gte
  @gte
end

#lt ⇒ Object

Returns the value of attribute lt.



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# File 'lib/rulp/lv.rb', line 8

def lt
  @lt
end

#lte ⇒ Object

Returns the value of attribute lte.



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# File 'lib/rulp/lv.rb', line 8

def lte
  @lte
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/rulp/lv.rb', line 7

def name
  @name
end

#value ⇒ Object

Returns the value of attribute value.



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# File 'lib/rulp/lv.rb', line 8

def value
  @value
end

Class Method Details

.const_missing(name) ⇒ Object 



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# File 'lib/rulp/lv.rb', line 28

def self.const_missing(name)
  return self.definition(name)
end

.definition(name, args) ⇒ Object 



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# File 'lib/rulp/lv.rb', line 32

def self.definition(name, args)
  identifier = "#{name}#{args.join("_")}"
  self.class.send(:define_method, identifier){|index=nil|
    if index
      self.definition(name, index)
    else
      defined = LV::names_table["#{identifier}"]
      if defined && defined.class != self
        raise StandardError.new("ERROR:\n#{name} was already defined as a variable of type #{defined.class}."+
                                "You are trying to redefine it as a variable of type #{self}")
      elsif(!defined)
        self.new(name, args)
      else
        defined
      end
    end
  }
  return self.send(identifier) || self.new(name, args)
end

.method_missing(name, *args) ⇒ Object 



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# File 'lib/rulp/lv.rb', line 24

def self.method_missing(name, *args)
  return self.definition(name, args)
end

Instance Method Details

#*(numeric) ⇒ Object 



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# File 'lib/rulp/lv.rb', line 52

def * (numeric)
  self.nocoerce
  Expressions.new([Fragment.new(self, numeric)])
end

#+(expressions) ⇒ Object 



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# File 'lib/rulp/lv.rb', line 65

def + (expressions)
  Expressions[self] + Expressions[expressions]
end

#-(other) ⇒ Object 



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# File 'lib/rulp/lv.rb', line 61

def -(other)
  self + (-other)
end

#-@ ⇒ Object 



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# File 'lib/rulp/lv.rb', line 57

def -@
  return self * -1
end

#inspect ⇒ Object 



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# File 'lib/rulp/lv.rb', line 80

def inspect
  "#{name}#{args.join("-")}(#{suffix})[#{value || 'undefined'}]"
end

#meth ⇒ Object 



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# File 'lib/rulp/lv.rb', line 16

def meth
  "#{self.name}_#{self.suffix}"
end

#suffix ⇒ Object 



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# File 'lib/rulp/lv.rb', line 20

def suffix
  "f"
end

#to_proc ⇒ Object 



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# File 'lib/rulp/lv.rb', line 12

def to_proc
  ->(index){ send(self.meth, index) }
end