Class: Keisan::Function

Inherits:

Object

• Object
• Keisan::Function

Defined in:

lib/keisan/function.rb

Direct Known Subclasses

Keisan::Functions::Diff, Keisan::Functions::EnumerableFunction, Keisan::Functions::ExpressionFunction, Keisan::Functions::If, Keisan::Functions::Let, Keisan::Functions::LoopControlFlowFuntion, Keisan::Functions::ProcFunction, Keisan::Functions::Puts, Keisan::Functions::Range, Keisan::Functions::Replace, Keisan::Functions::ToH, Keisan::Functions::While

Instance Attribute Summary

• #arity ⇒ Object readonly

  Returns the value of attribute arity.

• #name ⇒ Object readonly

  Returns the value of attribute name.

Instance Method Summary

• #differentiate(ast_function, variable, context = nil) ⇒ Object
• #evaluate(ast_function, context = nil) ⇒ Object
• #initialize(name, arity = 1) ⇒ Function constructor

  A new instance of Function.

• #simplify(ast_function, context = nil) ⇒ Object
• #unbound_variables(children, context) ⇒ Object
• #value(ast_function, context = nil) ⇒ Object

Constructor Details

#initialize(name, arity = 1) ⇒ Function

Returns a new instance of Function.

# File 'lib/keisan/function.rb', line 5

def initialize(name, arity = 1)
  @name = name
  @arity = arity
end

Instance Attribute Details

#arity ⇒ Object (readonly)

Returns the value of attribute arity.

# File 'lib/keisan/function.rb', line 3

def arity
  @arity
end

#name ⇒ Object (readonly)

Returns the value of attribute name.

# File 'lib/keisan/function.rb', line 3

def name
  @name
end

Instance Method Details

#differentiate(ast_function, variable, context = nil) ⇒ Object

Raises:

• (Exceptions::NotImplementedError)

# File 'lib/keisan/function.rb', line 22

def differentiate(ast_function, variable, context = nil)
  raise Exceptions::NotImplementedError.new
end

#evaluate(ast_function, context = nil) ⇒ Object

Raises:

• (Exceptions::NotImplementedError)

# File 'lib/keisan/function.rb', line 14

def evaluate(ast_function, context = nil)
  raise Exceptions::NotImplementedError.new
end

#simplify(ast_function, context = nil) ⇒ Object

Raises:

• (Exceptions::NotImplementedError)

# File 'lib/keisan/function.rb', line 18

def simplify(ast_function, context = nil)
  raise Exceptions::NotImplementedError.new
end

#unbound_variables(children, context) ⇒ Object

# File 'lib/keisan/function.rb', line 26

def unbound_variables(children, context)
  children.inject(Set.new) do |vars, child|
    vars | child.unbound_variables(context)
  end
end

#value(ast_function, context = nil) ⇒ Object

Raises:

• (Exceptions::NotImplementedError)

# File 'lib/keisan/function.rb', line 10

def value(ast_function, context = nil)
  raise Exceptions::NotImplementedError.new
end