Class: ActiveFacts::Metamodel::ValueRange

Inherits:
Object
  • Object
show all
Defined in:
lib/activefacts/metamodel/metamodel.rb,
lib/activefacts/metamodel/extensions.rb

Instance Method Summary collapse

Instance Method Details

#effective_maximum ⇒ Object

Note the mismatched return types here:



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# File 'lib/activefacts/metamodel/extensions.rb', line 1077

def effective_maximum
  maximum_bound ? maximum_bound.value : Infinity
end

#effective_minimum ⇒ Object 



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# File 'lib/activefacts/metamodel/extensions.rb', line 1081

def effective_minimum
  minimum_bound ? minimum_bound.value : -Infinity
end

#includes?(range) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/activefacts/metamodel/extensions.rb', line 1085

def includes? range
  if ValueRange === range
    range.effective_minimum >= effective_minimum && range.effective_maximum <= effective_maximum
  # elsif Bound === range   # REVISIT: use self.includes?(range.value) with is_literal_string, etc
  else
    range >= effective_minimum && range <= effective_maximum
  end
end

#inspect ⇒ Object 



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# File 'lib/activefacts/metamodel/extensions.rb', line 1072

def inspect
  to_s
end

#to_s(infinity = true) ⇒ Object 



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# File 'lib/activefacts/metamodel/extensions.rb', line 1042

def to_s(infinity = true)
  min = minimum_bound
  max = maximum_bound
  # Open-ended string ranges will fail in Ruby

  if min = minimum_bound
    min = min.value
    if min.is_literal_string
      min_literal = min.literal.inspect.gsub(/\A"|"\Z/,"'")   # Escape string characters
    else
      min_literal = min.literal
    end
  else
    min_literal = infinity ? "-Infinity" : ""
  end
  if max = maximum_bound
    max = max.value
    if max.is_literal_string
      max_literal = max.literal.inspect.gsub(/\A"|"\Z/,"'")   # Escape string characters
    else
      max_literal = max.literal
    end
  else
    max_literal = infinity ? "Infinity" : ""
  end

  min_literal +
    (min_literal != (max&&max_literal) ? (".." + max_literal) : "")
end