Class: Rtml::HighLevel::VariableManager

Inherits:
Object
  • Object
show all
Defined in:
lib/rtml/high_level/variable_manager.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ VariableManager

Returns a new instance of VariableManager.



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# File 'lib/rtml/high_level/variable_manager.rb', line 4

def initialize()
  @vars = HashWithIndifferentAccess.new
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(name, *args, &block) ⇒ Object 



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# File 'lib/rtml/high_level/variable_manager.rb', line 26

def method_missing(name, *args, &block)
  if args.empty? && !block_given?
    self.send("[]", name)
  elsif name.to_s[-1] == ?= && args.length == 1 && !block_given?
    self.send("[]=", name.to_s[0...-1], *args)
  else
    super
  end
end

Instance Attribute Details

#screen ⇒ Object

Returns the value of attribute screen.



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# File 'lib/rtml/high_level/variable_manager.rb', line 2

def screen
  @screen
end

Instance Method Details

#[](variable_name) ⇒ Object

Raises:



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# File 'lib/rtml/high_level/variable_manager.rb', line 8

def [](variable_name)
  variable_name = variable_name.to_s
  vardec = screen.document.variable_definitions.select { |i| i['name'] == variable_name }
  vardec = vardec.collect { |i| i['name'] }.first
  raise Rtml::Errors::MissingVariableError, "Could not find a TML variable named #{variable_name}. "+
          "Did you forget to declare it?" unless vardec
  @vars[variable_name] ||= Rtml::HighLevel::ManagedVariable.new(variable_name)
end

#[]=(target, other) ⇒ Object 



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# File 'lib/rtml/high_level/variable_manager.rb', line 17

def []=(target, other)
  case other
    when Rtml::HighLevel::ManagedVariable
      screen.set self[target].name => "tmlvar:#{other.name}"
    else
      screen.set self[target].name => other
  end
end