Class: Skeem::SkmFormals

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

Overview

class

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(theFormals, arityKind) ⇒ SkmFormals

Returns a new instance of SkmFormals.

Parameters:

  • arityKind (Symbol) —

    One of the following: :fixed, :variadic



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# File 'lib/skeem/s_expr_nodes.rb', line 522

def initialize(theFormals, arityKind)
  @formals = theFormals
  arity_set(arityKind)
end

Instance Attribute Details

#arity ⇒ Object (readonly)

Returns the value of attribute arity.



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# File 'lib/skeem/s_expr_nodes.rb', line 519

def arity
  @arity
end

#formals ⇒ Object (readonly)

Returns the value of attribute formals.



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# File 'lib/skeem/s_expr_nodes.rb', line 518

def formals
  @formals
end

Instance Method Details

#evaluate(aRuntime) ⇒ Object 



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# File 'lib/skeem/s_expr_nodes.rb', line 527

def evaluate(aRuntime)
  formals.map! { |param| param.evaluate(aRuntime) }
end

#nullary? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/skeem/s_expr_nodes.rb', line 531

def nullary?
  arity.nullary?
end

#required_arity ⇒ Object 



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# File 'lib/skeem/s_expr_nodes.rb', line 539

def required_arity
  (arity.high == '*') ? arity.low : arity.high
end

#variadic? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/skeem/s_expr_nodes.rb', line 535

def variadic?
  arity.variadic?
end