Class: Keisan::Functions::ToH

Inherits:
Keisan::Function show all
Defined in:
lib/keisan/functions/to_h.rb

Instance Attribute Summary

Attributes inherited from Keisan::Function

#arity, #name

Instance Method Summary collapse

Methods inherited from Keisan::Function

#differentiate

Constructor Details

#initialize ⇒ ToH

Returns a new instance of ToH.



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# File 'lib/keisan/functions/to_h.rb', line 4

def initialize
  super("to_h", 1)
end

Instance Method Details

#evaluate(ast_function, context = nil) ⇒ Object 



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# File 'lib/keisan/functions/to_h.rb', line 13

def evaluate(ast_function, context = nil)
  validate_arguments!(ast_function.children.count)
  context ||= Context.new

  child = ast_function.children[0].simplify(context)

  case child
  when AST::List
    AST::Hash.new(child.children)
  when AST::Hash
    child
  else
    raise Exceptions::InvalidFunctionError.new("Cannot call to_h on a #{child.class}")
  end
end

#simplify(ast_function, context = nil) ⇒ Object 



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# File 'lib/keisan/functions/to_h.rb', line 29

def simplify(ast_function, context = nil)
  evaluate(ast_function, context)
end

#value(ast_function, context = nil) ⇒ Object 



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# File 'lib/keisan/functions/to_h.rb', line 8

def value(ast_function, context = nil)
  validate_arguments!(ast_function.children.count)
  evaluate(ast_function, context).value(context)
end