Class: Keisan::Context

Inherits:
Object
  • Object
show all
Defined in:
lib/keisan/context.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(parent: nil, random: nil) ⇒ Context

Returns a new instance of Context.



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

def initialize(parent: nil, random: nil)
  @parent = parent
  @function_registry = Functions::Registry.new(parent: @parent.try(:function_registry))
  @variable_registry = Variables::Registry.new(parent: @parent.try(:variable_registry))
  @random            = random
end

Instance Attribute Details

#function_registry ⇒ Object (readonly)

Returns the value of attribute function_registry.



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

def function_registry
  @function_registry
end

#variable_registry ⇒ Object (readonly)

Returns the value of attribute variable_registry.



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

def variable_registry
  @variable_registry
end

Instance Method Details

#function(name) ⇒ Object 



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# File 'lib/keisan/context.rb', line 20

def function(name)
  @function_registry[name.to_s]
end

#random ⇒ Object 



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# File 'lib/keisan/context.rb', line 36

def random
  @random || @parent.try(:random) || Random.new
end

#register_function!(name, function) ⇒ Object 



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# File 'lib/keisan/context.rb', line 24

def register_function!(name, function)
  @function_registry.register!(name.to_s, function)
end

#register_variable!(name, value) ⇒ Object 



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# File 'lib/keisan/context.rb', line 32

def register_variable!(name, value)
  @variable_registry.register!(name.to_s, value)
end

#spawn_child ⇒ Object 



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# File 'lib/keisan/context.rb', line 12

def spawn_child
  if block_given?
    yield self.class.new(parent: self)
  else
    self.class.new(parent: self)
  end
end

#variable(name) ⇒ Object 



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# File 'lib/keisan/context.rb', line 28

def variable(name)
  @variable_registry[name.to_s]
end