Method: Class2.autoload

Defined in:
lib/class2.rb

.autoload(namespace = Object, stack = nil) ⇒ Object

:nodoc:



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# File 'lib/class2.rb', line 62

def autoload(namespace = Object, stack = nil) # :nodoc:
  failure = lambda { |message|  abort "class2: cannot autoload class definitions: #{message}" }
  failure["cannot find the right caller"] unless (stack || caller).find do |line|
    # Ignore our autoload file and require()
    line.index("/class2/autoload.rb:").nil? && line.index("/kernel_require.rb:").nil? && line =~ /(.+):\d+:in\s+`\S/
  end

  # Give this precedence over global DATA constant
  data = String.new
  File.open($1) do |io|
    while line = io.gets
      if line == "__END__\n"
        data << line while line = io.gets
      end
    end
  end

  # Fallback to global constant if nothing found
  data = ::DATA.read if data.empty? && defined?(::DATA)
  failure["no data section found"] if data.empty?

  spec = JSON.parse(data)
  Class2.new(namespace, spec)
rescue IOError, SystemCallError, JSON::ParserError => e
  failure[e.message]
end