Class: Array

Inherits:

Object

• Object
• Array

Includes:

Fieldable

Defined in:

lib/arrayfields.rb

Overview

has added a class generator when the fields are known apriori.

Direct Known Subclasses

PseudoHash

Class Method Summary

• .fields(*fields, &block) ⇒ Object
• .struct(*fields) ⇒ Object

Methods included from Fieldable

#fields, #fields=, #fieldset

Class Method Details

.fields(*fields, &block) ⇒ Object

# File 'lib/arrayfields.rb', line 381

def fields *fields, &block
  (( array = new(&block) )).fields = fields.map{|x| Enumerable === x ? x.to_a : x}.flatten
  array
end

.struct(*fields) ⇒ Object

# File 'lib/arrayfields.rb', line 347

def struct *fields
  fields = fields.flatten
  Class.new(self) do
    include ArrayFields
    const_set :FIELDS, ArrayFields::FieldSet.new(fields)
    fields.each do |field|
      field = field.to_s
      if field =~ %r/^[a-zA-Z_][a-zA-Z0-9_]*$/
        begin
          module_eval <<-code
            def #{ field } *a
              a.size == 0 ? self['#{ field }'] : (self.#{ field } = a.shift) 
            end
            def #{ field }= value
              self['#{ field }'] = value
            end
          code
        rescue SyntaxError
          :by_ignoring_it
        end
      end
    end
    def initialize *a, &b
      super
    ensure
      @fieldset = self.class.const_get :FIELDS
    end
    def self.[] *elements
      array = new
      array.replace elements
      array
    end
  end
end