Class: Teacher::TopLevel

Inherits:
Scope
  • Object
show all
Defined in:
lib/teacher/scope.rb

Instance Attribute Summary

Attributes inherited from Scope

#published_variables, #symbols

Instance Method Summary collapse

Methods inherited from Scope

#[], #[]=

Constructor Details

#initialize(*args) ⇒ TopLevel

Returns a new instance of TopLevel.



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# File 'lib/teacher/scope.rb', line 22

def initialize(*args)
  super

  self["min"] = Function.new(self) do |*arguments|
    arguments.min_by { |a| a.eval(self) }
  end

  self["sub"] = self["substitute"] = Function.new(self) do |target, origin|
    loop do
      target = target.eval(self)
      break if target.is_a?(Identifier)
    end
    @symbols[target.text_value] = origin.eval(self)
  end

  self["pub"] = self["publish"] = Function.new(self) do |identifier|
    @published_variables[identifier.text_value] = identifier.eval(self)
  end
end