Class: RDF::Query::HashPatternNormalizer::Counter

Inherits:
Object
  • Object
show all
Defined in:
lib/rdf/query/hash_pattern_normalizer.rb

Overview

A counter that can be incremented and decremented.

Since:

  • 0.3.0

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(offset = 0, increment = 1) ⇒ Counter

Returns a new instance of Counter.

Parameters:

  • offset (Numeric) (defaults to: 0) —

    the offset (or initial value) for this counter.

  • increment (Numeric) (defaults to: 1) —

    the increment for this counter.

Since:

  • 0.3.0



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# File 'lib/rdf/query/hash_pattern_normalizer.rb', line 25

def initialize(offset = 0, increment = 1)
  @offset = offset
  @increment = increment
  
  @value = @offset
end

Instance Attribute Details

#increment ⇒ Numeric (readonly)

The increment for this counter.

Returns:

  • (Numeric)

Since:

  • 0.3.0



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# File 'lib/rdf/query/hash_pattern_normalizer.rb', line 18

def increment
  @increment
end

#offset ⇒ Numeric (readonly)

The offset (or initial value) for this counter.

Returns:

  • (Numeric)

Since:

  • 0.3.0



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# File 'lib/rdf/query/hash_pattern_normalizer.rb', line 12

def offset
  @offset
end

Instance Method Details

#decrement! ⇒ RDF::Query::HashPatternNormalizer::Counter

Decrements this counter, and returns the new value.

Returns:

Since:

  • 0.3.0



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# File 'lib/rdf/query/hash_pattern_normalizer.rb', line 36

def decrement!
  @value -= @increment
  
  self
end

#increment! ⇒ RDF::Query::HashPatternNormalizer::Counter

Increments this counter, and returns the new value.

Returns:

Since:

  • 0.3.0



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# File 'lib/rdf/query/hash_pattern_normalizer.rb', line 46

def increment!
  @value += @increment
  
  self
end

#to_f ⇒ Float

Returns a floating point representation of this counter.

Returns:

  • (Float)

Since:

  • 0.3.0



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# File 'lib/rdf/query/hash_pattern_normalizer.rb', line 56

def to_f
  @value.to_f
end

#to_i ⇒ Integer

Returns an integer representation of this counter.

Returns:

  • (Integer)

Since:

  • 0.3.0



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# File 'lib/rdf/query/hash_pattern_normalizer.rb', line 64

def to_i
  @value.to_i
end

#to_s ⇒ String

Returns a string representation of this counter.

Returns:

  • (String)

Since:

  • 0.3.0



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# File 'lib/rdf/query/hash_pattern_normalizer.rb', line 71

def to_s
  @value.to_s
end