Class: CommandResultInstanceVars

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

Overview

Option 2: Using instance variables with define_method

Instance Method Summary collapse

Constructor Details

#initialize(**attributes) ⇒ CommandResultInstanceVars

Returns a new instance of CommandResultInstanceVars.



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# File 'lib/command_result_alternatives.rb', line 35

def initialize(**attributes)
  @exit_status = 0
  @stdout = ''
  
  attributes.each do |name, value|
    instance_variable_set("@#{name}", value)
    
    # Define getter and setter methods dynamically
    self.class.define_method(name) do
      instance_variable_get("@#{name}")
    end
    
    self.class.define_method("#{name}=") do |val|
      instance_variable_set("@#{name}", val)
    end
  end
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(name, *args) ⇒ Object 



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# File 'lib/command_result_alternatives.rb', line 67

def method_missing(name, *args)
  if name.to_s.end_with?('=')
    # Setter
    attr_name = name.to_s.chomp('=')
    instance_variable_set("@#{attr_name}", args.first)
    
    # Define methods for future use
    self.class.define_method(attr_name) do
      instance_variable_get("@#{attr_name}")
    end
    
    self.class.define_method(name) do |val|
      instance_variable_set("@#{attr_name}", val)
    end
  else
    # Getter
    if instance_variable_defined?("@#{name}")
      instance_variable_get("@#{name}")
    else
      super
    end
  end
end

Instance Method Details

#failure? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/command_result_alternatives.rb', line 53

def failure?
  !success?
end

#new_lines=(value) ⇒ Object

Intercept specific setter



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# File 'lib/command_result_alternatives.rb', line 62

def new_lines=(value)
  warn caller.deref[0..4], value
  @new_lines = value
end

#respond_to_missing?(name, include_private = false) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/command_result_alternatives.rb', line 91

def respond_to_missing?(name, include_private = false)
  attr_name = name.to_s.chomp('=').to_sym
  instance_variable_defined?("@#{attr_name}") || super
end

#success? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/command_result_alternatives.rb', line 57

def success?
  exit_status.zero?
end