Class: Keisan::Functions::Replace

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

Instance Attribute Summary

Attributes inherited from Keisan::Function

#arity, #name

Instance Method Summary collapse

Methods inherited from Keisan::Function

#differentiate, #unbound_variables

Constructor Details

#initialize ⇒ Replace

Returns a new instance of Replace.



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

def initialize
  @name = "replace"
end

Instance Method Details

#evaluate(ast_function, context = nil) ⇒ Object 



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# File 'lib/keisan/functions/replace.rb', line 23

def evaluate(ast_function, context = nil)
  context ||= Context.new
  simplify(ast_function, context).evaluate(context)
end

#simplify(ast_function, context = nil) ⇒ Object 



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

def simplify(ast_function, context = nil)
  context ||= Context.new
  expression, variable, replacement = expression_variable_replacement(ast_function)

  expression = expression.simplify(context)
  replacement = replacement.simplify(context)

  expression.replace(variable, replacement).simplify(context)
end

#value(ast_function, context = nil) ⇒ Object 



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

def value(ast_function, context = nil)
  context ||= Context.new
  evaluate(ast_function, context).value(context)
end