Class: Skeem::SkmElement

Inherits:
Struct
  • Object
show all
Defined in:
lib/skeem/skm_element.rb

Overview

Abstract class. Generalization of any S-expr element.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(aPosition) ⇒ SkmElement

Returns a new instance of SkmElement.



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# File 'lib/skeem/skm_element.rb', line 6

def initialize(aPosition)
  self.position = aPosition
end

Instance Attribute Details

#position ⇒ Object

Returns the value of attribute position

Returns:

  • (Object) —

    the current value of position



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# File 'lib/skeem/skm_element.rb', line 5

def position
  @position
end

Instance Method Details

#accept(_visitor) ⇒ Object

Abstract method. Part of the 'visitee' role in Visitor design pattern.

Parameters:

Raises:

  • (NotImplementedError) 


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# File 'lib/skeem/skm_element.rb', line 100

def accept(_visitor)
  raise NotImplementedError
end

#boolean? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/skeem/skm_element.rb', line 34

def boolean?
  false
end

#bound!(_frame) ⇒ Object

Notification that this procedure is bound to a variable

Parameters:

  • (Skemm::SkmFrame) 


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# File 'lib/skeem/skm_element.rb', line 118

def bound!(_frame)
  # Do nothing
end

#callable? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/skeem/skm_element.rb', line 10

def callable?
  false
end

#char? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/skeem/skm_element.rb', line 38

def char?
  false
end

#complex? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/skeem/skm_element.rb', line 18

def complex?
  false
end

#done! ⇒ Object 



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# File 'lib/skeem/skm_element.rb', line 104

def done!
  # Do nothing
end

#eqv?(other) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/skeem/skm_element.rb', line 70

def eqv?(other)
  equal?(other)
end

#evaluate(_runtime) ⇒ Object

Raises:

  • (NotImplementedError) 


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# File 'lib/skeem/skm_element.rb', line 89

def evaluate(_runtime)
  raise NotImplementedError, "Missing implementation of #{self.class.name}"
end

#inspect ⇒ Object 



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# File 'lib/skeem/skm_element.rb', line 122

def inspect
  result = inspect_prefix.dup
  result << inspect_specific
  result << inspect_suffix

  result
end

#integer? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/skeem/skm_element.rb', line 30

def integer?
  false
end

#list? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/skeem/skm_element.rb', line 50

def list?
  false
end

#null? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/skeem/skm_element.rb', line 54

def null?
  false
end

#number? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/skeem/skm_element.rb', line 14

def number?
  false
end

#pair? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/skeem/skm_element.rb', line 58

def pair?
  false
end

#procedure? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/skeem/skm_element.rb', line 62

def procedure?
  false
end

#quasiquote(_runtime) ⇒ Object

Raises:

  • (NotImplementedError) 


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# File 'lib/skeem/skm_element.rb', line 93

def quasiquote(_runtime)
  raise NotImplementedError, "Missing implementation of #{self.class.name}"
end

#quoted! ⇒ Object 



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# File 'lib/skeem/skm_element.rb', line 108

def quoted!
  # Do nothing
end

#rational? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/skeem/skm_element.rb', line 26

def rational?
  false
end

#real? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/skeem/skm_element.rb', line 22

def real?
  false
end

#skm_eq?(other) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/skeem/skm_element.rb', line 79

def skm_eq?(other)
  # Default implementation, to override when necessary
  eqv?(other)
end

#skm_equal?(_other) ⇒ Boolean

Returns:

  • (Boolean)

Raises:

  • (NotImplementedError) 


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# File 'lib/skeem/skm_element.rb', line 74

def skm_equal?(_other)
  msg = "Missing implementation of method #{self.class.name}##{__method__}"
  raise NotImplementedError, msg
end

#string? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/skeem/skm_element.rb', line 42

def string?
  false
end

#symbol? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/skeem/skm_element.rb', line 46

def symbol?
  false
end

#unquoted! ⇒ Object 



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# File 'lib/skeem/skm_element.rb', line 112

def unquoted!
  # Do nothing
end

#vector? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/skeem/skm_element.rb', line 66

def vector?
  false
end

#verbatim? ⇒ TrueClass, FalseClass

Returns true if quoted element is identical to itself.

Returns:

  • (TrueClass, FalseClass) —

    true if quoted element is identical to itself



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# File 'lib/skeem/skm_element.rb', line 85

def verbatim?
  false
end