Module: FormatEngine::AttrFormatter

Defined in:
lib/format_engine/attr_formatter.rb

Overview

This module adds the attr_formatter extension to a class.

Instance Method Summary collapse

Instance Method Details

#attr_formatter(method, library) ⇒ Object

Define a formatter for instances of the current class.
Parameters

  • method - A symbol used to name the formatting method created by this method.

  • library - A hash of formatting rules that define the formatting

capabilities supported by this formatter.


Meta-effects

  • Creates a method (named after the symbol in method) that formats the

instance of the class. The created method takes one parameter:


Meta-method Parameters

  • spec_str - A format specification string with %x etc qualifiers.


Meta-method Returns

  • A formatted string


Returns

  • The format engine used by this method.



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# File 'lib/format_engine/attr_formatter.rb', line 20

def attr_formatter(method, library)
  engine = Engine.new(library)

  #Create an instance method to do the formatting.
  define_method(method) do |spec_str|
    engine.do_format(self, spec_str)
  end

  engine
end