Exception: Currency::Exception::Base

Inherits:
Exception
  • Object
show all
Defined in:
lib/currency/exception.rb

Overview

Base class for all Currency::Exception objects.

raise Currency::Exception [ "msg", :opt1, 1, :opt2, 2 ]

Constant Summary collapse

EMPTY_HASH = 
{ }.freeze

Instance Method Summary collapse

Constructor Details

#initialize(arg1, *args) ⇒ Base

Returns a new instance of Base.



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# File 'lib/currency/exception.rb', line 12

def initialize(arg1, *args)
  case arg1
  # [ description, ... ]
  when Array
    @opts = arg1
    arg1 = arg1.shift
  else
    @opts = nil
  end

  case @opts
  when Array
    if @opts.size == 1 && @opts.first.kind_of?(Hash)
      # [ description, { ... } ]
      @opts = @opts.first
    else
      # [ description, :key, value, ... ]
      @opts = Hash[*@opts]
    end
  end

  case @opts
  when Hash
    @opts = @opts.dup.freeze
  else
    @opts = { :info => @opts }.freeze
  end

  @opts ||= EMPTY_HASH

  super(arg1, *args)
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(sel, *args, &blk) ⇒ Object 



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# File 'lib/currency/exception.rb', line 46

def method_missing(sel, *args, &blk)
  sel = sel.to_sym
  if args.empty? && ! block_given? && @opts.key?(sel) 
    return @opts[sel]
  end
  super
end

Instance Method Details

#to_s ⇒ Object 



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# File 'lib/currency/exception.rb', line 54

def to_s
  super + ": #{@opts.inspect}"
end